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WO2025050700A1 - Procédé de traitement, dispositif de communication et support de stockage - Google Patents

Procédé de traitement, dispositif de communication et support de stockage Download PDF

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Publication number
WO2025050700A1
WO2025050700A1 PCT/CN2024/093463 CN2024093463W WO2025050700A1 WO 2025050700 A1 WO2025050700 A1 WO 2025050700A1 CN 2024093463 W CN2024093463 W CN 2024093463W WO 2025050700 A1 WO2025050700 A1 WO 2025050700A1
Authority
WO
WIPO (PCT)
Prior art keywords
random access
access opportunity
opportunity
synchronization signal
signal block
Prior art date
Application number
PCT/CN2024/093463
Other languages
English (en)
Chinese (zh)
Inventor
王沙
Original Assignee
深圳传音控股股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 深圳传音控股股份有限公司 filed Critical 深圳传音控股股份有限公司
Priority to PCT/CN2024/093463 priority Critical patent/WO2025050700A1/fr
Publication of WO2025050700A1 publication Critical patent/WO2025050700A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present application relates to the field of communication technology, and in particular to a processing method, a communication device and a storage medium.
  • the random access process is a key step in supporting terminal devices to access the network.
  • the inventors found that there are at least the following problems: when the network allows NES (Network Energy Saving) users and traditional users to coexist, it will face the challenge of random access resource allocation and management.
  • NES Network Energy Saving
  • the existing mapping method of synchronization signal blocks (SSB) and random access opportunities (RO) cannot ensure that the mapping of NES users and traditional users does not interfere with each other, resulting in the network equipment being unable to effectively distinguish the beam direction used by the terminal device performing random access, thereby reducing resource utilization efficiency and/or increasing access delay.
  • the main purpose of this application is to provide a processing method, a communication device and a storage medium, which aims to optimize the mapping mechanism between synchronization signal blocks and random access opportunities, so that network equipment can effectively distinguish the beam direction used by terminal devices performing random access.
  • the present application provides a processing method which can be applied to a terminal device (such as a mobile phone), comprising the steps of:
  • S2 Determine the mapping of synchronization signal blocks and random access opportunities based on downlink information.
  • the method further comprises:
  • the preamble is sent at a random access opportunity associated with at least one synchronization signal block.
  • the method further comprises at least one of the following:
  • the downlink information includes at least one of a radio resource control message, a media access control message, a system message, and downlink control information;
  • the random access opportunity is a first random access opportunity and/or a second random access opportunity
  • the random access opportunity is a valid random access opportunity.
  • mapping of the synchronization signal block and the random access opportunity includes at least one of the following:
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the method further comprises at least one of the following:
  • the format of the preamble transmitted at the first random access opportunity is the same as the format of the preamble transmitted at the second random access opportunity;
  • the format of the preamble transmitted at the first random access opportunity is independent of the format of the preamble transmitted at the second random access opportunity
  • the first root sequence index used to generate the preamble transmitted at the first random access opportunity is the same as the second root sequence index used to generate the preamble transmitted at the second random access opportunity;
  • the element values in the first root sequence index set used to generate the preamble transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used to generate the preamble transmitted at the second random access opportunity;
  • the synchronization signal block index mapped to the first random access opportunity is exactly the same as the synchronization signal block index mapped to the second random access opportunity;
  • At least one synchronization signal block index mapped to the first random access opportunity is different from at least one synchronization signal block index mapped to the second random access opportunity.
  • the method further comprises at least one of the following:
  • the first random access opportunity is located in the first random access resource
  • the second random access opportunity is located in the second random access resource
  • the first root sequence index value is the sum of the second root sequence index value and the first value
  • the value of the first root sequence index is related to the format of the preamble code and/or the length of the preamble code
  • Determine the order of mapping the synchronization signal block and the random access opportunity including: first, according to the ascending order of the preamble code index within a random access opportunity; second, according to the ascending order of the frequency domain resource index of the random access opportunity multiplexed in the frequency domain; third, according to the ascending order of the time domain resource index of the random access opportunity multiplexed in the time domain within a random access time slot; fourth, according to the ascending order of the index of the random access time slot.
  • the valid random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, and the random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access slot, then the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot is within a UL symbol, the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a common uplink and downlink configuration for time division duplex, and if the random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, then the random access opportunity in the random access slot is valid.
  • the valid random access opportunity further includes at least one of the following:
  • the first random access opportunity is valid if the first random access opportunity is not a random access opportunity that satisfies the first condition, the first random access opportunity is valid;
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, the first random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access slot is within a UL symbol, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid.
  • the random access opportunity that meets the first condition includes at least one of the following:
  • step S2 includes at least one of the following:
  • the number of random access opportunities for frequency domain multiplexing of the second random access opportunities in the second random access resource at one time instance is determined according to the downlink information.
  • the present application also provides a processing method, which can be applied to a network device (such as a base station), comprising the steps of:
  • S1 Send downlink information so that the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • the method further includes: receiving a preamble code according to a mapping of a synchronization signal block and a random access opportunity.
  • the method further comprises at least one of the following:
  • the downlink information includes at least one of a radio resource control message, a media access control message, a system message, and downlink control information;
  • the random access opportunity is the first random access opportunity and/or the second random access opportunity
  • the random access opportunity is a valid random access opportunity.
  • mapping of the synchronization signal block and the random access opportunity includes at least one of the following:
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the method further comprises at least one of the following:
  • the format of the preamble transmitted at the first random access opportunity is the same as the format of the preamble transmitted at the second random access opportunity;
  • the format of the preamble transmitted at the first random access opportunity is independent of the format of the preamble transmitted at the second random access opportunity
  • the first root sequence index used to generate the preamble transmitted at the first random access opportunity is the same as the second root sequence index used to generate the preamble transmitted at the second random access opportunity;
  • the element values in the first root sequence index set used to generate the preamble transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used to generate the preamble transmitted at the second random access opportunity;
  • the synchronization signal block index mapped to the first random access opportunity is exactly the same as the synchronization signal block index mapped to the second random access opportunity;
  • At least one synchronization signal block index mapped to the first random access opportunity is different from at least one synchronization signal block index mapped to the second random access opportunity.
  • the method further comprises at least one of the following:
  • the first random access opportunity is located in the first random access resource
  • the second random access opportunity is located in the second random access resource
  • the first random access opportunity is applicable to four-step random access and/or two-step random access;
  • the first root sequence index value is the sum of the second root sequence index value and the first value
  • the value of the first root sequence index is related to the format of the preamble code and/or the length of the preamble code
  • Determining the order of mapping synchronization signal blocks and random access opportunities includes:
  • the valid random access opportunity includes at least one of the following:
  • the random access opportunity in a random access slot is valid;
  • the random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, then the random access opportunity in the random access slot is valid.
  • the valid random access opportunity further includes at least one of the following:
  • the first random access opportunity is not a random access opportunity that satisfies the first condition, the first random access opportunity is valid;
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, the first random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access slot is within a UL symbol, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid.
  • the random access opportunity that meets the first condition includes at least one of the following:
  • the terminal device determines mapping of a synchronization signal block and a random access opportunity based on the downlink information, including at least one of the following:
  • the terminal device determines the mapping of the synchronization signal block and the first random access opportunity according to the downlink information
  • the terminal device determines the radio frame, subframe and/or time slot position where the first random access opportunity in the first random access resource is located according to the downlink information
  • the terminal device determines, according to the downlink information, a frequency domain starting RB position of a first random access opportunity in the first random access resource on the activation bandwidth;
  • the terminal device determines, according to the downlink information, the number of random access opportunities for frequency domain multiplexing of the first random access opportunity in the first random access resource at one time instance;
  • the terminal device determines the radio frame, subframe and time slot position of the second random access opportunity in the second random access resource according to the downlink information
  • the terminal device determines, according to the downlink information, a frequency domain starting RB position of a second random access opportunity in the second random access resource on the activated bandwidth;
  • the terminal device determines the number of random access opportunities for frequency domain multiplexing of the second random access opportunities in the second random access resource at a time instance based on the downlink information.
  • the present application also provides a processing device, the device comprising:
  • a determination module is used to determine the mapping of synchronization signal blocks and random access opportunities based on downlink information.
  • the present application also provides a processing device, the device comprising:
  • the sending module is used to send downlink information so that the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • the present application also provides a communication device, comprising: a memory, a processor, and a processing program stored in the memory and executable on the processor, wherein the processing program implements the steps of any of the processing methods described above when executed by the processor.
  • the communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station).
  • a terminal device such as a mobile phone
  • a network device such as a base station
  • the present application also provides a computer-readable storage medium, on which a processing program is stored.
  • a processing program is stored.
  • the processing program is executed by a processor, the steps of any of the processing methods described above are implemented.
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information, thereby optimizing the mapping mechanism of the synchronization signal block and the random access opportunity, and enabling the network device to effectively distinguish the beam direction used by the terminal device performing random access.
  • FIG1 is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application.
  • FIG2 is a diagram of a communication network system architecture provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of a hardware structure of a controller 140 provided in the present application.
  • FIG4 is a schematic diagram of the hardware structure of a network node 150 provided in the present application.
  • FIG5 is a schematic flow chart of a processing method according to the first embodiment of the present application.
  • FIG6 is a schematic flow chart of a processing method according to a second embodiment of the present application.
  • FIG15 is a schematic flow chart of a processing method according to a seventh embodiment of the present application.
  • FIG16 is a schematic diagram of the interaction flow between a network device and a terminal device of a processing method shown in the ninth embodiment of the present application;
  • FIG17 is a first structural diagram of a processing device provided in an embodiment of the present application.
  • FIG18 is a second structural schematic diagram of a processing device provided in an embodiment of the present application.
  • FIG19 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application.
  • first, second, third, etc. may be used to describe various information in this article, these information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as the second information
  • second information may also be referred to as the first information.
  • word “if” as used herein can be interpreted as “at the time of -- or "when" or "in response to determination”.
  • singular forms “one”, “one” and “the” are intended to also include plural forms, unless there is an opposite indication in the context.
  • “comprising at least one of the following: A, B, C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”, and for another example, “A, B or C” or “A, B and/or C” means “any of the following: A; B; C; A and B; A and C; B and C; A and B and C”.
  • An exception to this definition will only occur when a combination of elements, functions, steps or operations are inherently mutually exclusive in some manner.
  • the words “if” and “if” may be interpreted as “at the time of” or “when” or “in response to determining” or “in response to detecting”, depending on the context.
  • the phrases “if it is determined” or “if (stated condition or event) is detected” may be interpreted as “when it is determined” or “in response to determining” or “when detecting (stated condition or event)” or “in response to detecting (stated condition or event)", depending on the context.
  • step codes such as S1 and S2 are used for the purpose of expressing the corresponding content more clearly and concisely, and do not constitute a substantial limitation on the order.
  • S2 first and then S1, etc., but these should all be within the scope of protection of this application.
  • module means, “component” or “unit” used to represent elements are only used to facilitate the description of the present application, and have no specific meanings. Therefore, “module”, “component” or “unit” can be used in a mixed manner.
  • the communication device in this application can be a terminal device (such as a mobile phone) or a network device (such as a base station).
  • a terminal device such as a mobile phone
  • a network device such as a base station
  • the terminal device may be implemented in various forms.
  • the terminal device described in this application may include intelligent terminal devices such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminal devices such as digital TVs and desktop computers.
  • intelligent terminal devices such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc.
  • PDAs portable media players
  • navigation devices wearable devices
  • smart bracelets smart bracelets
  • pedometers etc.
  • fixed terminal devices such as digital TVs and desktop computers.
  • FIG. 1 is a schematic diagram of the hardware structure of a mobile terminal for implementing various embodiments of the present application.
  • the mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A/V (audio/video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111.
  • RF Radio Frequency
  • the radio frequency unit 101 can be used for receiving and sending signals during information transmission or communication. Specifically, after receiving the downlink information of the base station, it is sent to the processor 110 for processing; in addition, the uplink data is sent to the base station.
  • the radio frequency unit 101 includes but is not limited to an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc. And/or, the radio frequency unit 101 can also communicate with the network and other devices through wireless communication.
  • the above-mentioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), 5G and 6G, etc.
  • GSM Global System of Mobile communication
  • GPRS General Packet Radio Service
  • CDMA2000 Code Division Multiple Access 2000
  • WCDMA Wideband Code Division Multiple Access
  • TD-SCDMA Time Division Synchronous Code Division Multiple Access
  • FDD-LTE Frequency Division Duplexing-Long Term Evolution
  • TDD-LTE Time Division Duplexing-Long Term Evolution
  • 5G and 6G etc.
  • WiFi is a short-range wireless transmission technology.
  • the mobile terminal can help users send and receive emails, browse web pages, and access streaming media through the WiFi module 102, which provides users with wireless broadband Internet access.
  • FIG1 shows the WiFi module 102, it is understandable that it is not a necessary component of the mobile terminal and can be omitted as needed without changing the essence of the invention.
  • the audio output unit 103 can convert the audio data received by the RF unit 101 or the WiFi module 102 or stored in the memory 109 into an audio signal and output it as sound when the mobile terminal 100 is in a call signal reception mode, a talk mode, a recording mode, a voice recognition mode, a broadcast reception mode, etc. Moreover, the audio output unit 103 can also provide audio output related to a specific function performed by the mobile terminal 100 (for example, a call signal reception sound, a message reception sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.
  • the A/V input unit 104 is used to receive audio or video signals.
  • the A/V input unit 104 may include a graphics processor (GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode.
  • the processed image frame can be displayed on the display unit 106.
  • the image frame processed by the graphics processor 1041 can be stored in the memory 109 (or other storage medium) or sent via the radio frequency unit 101 or the WiFi module 102.
  • the microphone 1042 can receive sound (audio data) via the microphone 1042 in a telephone call mode, a recording mode, a voice recognition mode, and other operating modes, and can process such sound into audio data.
  • the processed audio (voice) data can be converted into a format output that can be sent to a mobile communication base station via the radio frequency unit 101 in the case of a telephone call mode.
  • the microphone 1042 can implement various types of noise elimination (or suppression) algorithms to eliminate (or suppress) noise or interference generated in the process of receiving and sending audio signals.
  • the mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 1061 according to the brightness of the ambient light
  • the proximity sensor can turn off the display panel 1061 and/or the backlight when the mobile terminal 100 is moved to the ear.
  • the accelerometer sensor can detect the magnitude of acceleration in all directions (generally three axes), and can detect the magnitude and direction of gravity when stationary.
  • sensors such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc.
  • the display unit 106 is used to display information input by the user or information provided to the user.
  • the display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • the user input unit 107 can be used to receive input digital or character information, and generate key signal input related to user settings and function control of the mobile terminal.
  • the user input unit 107 may include a touch panel 1071 and other input devices 1072.
  • the touch panel 1071 also known as a touch screen, can collect user touch operations on or near it (such as operations performed by users using fingers, styluses, or any other suitable objects or accessories on or near the touch panel 1071), and drive the corresponding connection device according to a pre-set program.
  • the touch panel 1071 may include a touch detection device and a touch controller.
  • the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact point coordinates, and then sends it to the processor 110, and can receive and execute commands sent by the processor 110.
  • the touch panel 1071 can be implemented in various types such as resistive, capacitive, infrared, and surface acoustic waves.
  • the user input unit 107 may also include other input devices 1072.
  • the other input devices 1072 may include, but are not limited to, one or more of a physical keyboard, a function key (such as a volume control key, a switch key, etc.), a trackball, a mouse, a joystick, etc., which are not specifically limited here.
  • a function key such as a volume control key, a switch key, etc.
  • a trackball such as a mouse, a joystick, etc.
  • the touch panel 1071 may cover the display panel 1061.
  • the touch panel 1071 detects a touch operation on or near it, it is transmitted to the processor 110 to determine the type of the touch event, and then the processor 110 provides a corresponding visual output on the display panel 1061 according to the type of the touch event.
  • the touch panel 1071 and the display panel 1061 are used as two independent components to implement the input and output functions of the mobile terminal, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to implement the input and output functions of the mobile terminal, which is not limited to the specifics herein.
  • the interface unit 108 serves as an interface through which at least one external device can be connected to the mobile terminal 100.
  • the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input/output (I/O) port, a video I/O port, a headphone port, etc.
  • the interface unit 108 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the mobile terminal 100 or may be used to transmit data between the mobile terminal 100 and an external device.
  • the memory 109 can be used to store software programs and various data.
  • the memory 109 can mainly include a program storage area and a data storage area.
  • the program storage area can store an operating system, an application required for at least one function (such as a sound playback function, an image playback function, etc.), etc.
  • the data storage area can store data created according to the use of the mobile phone (such as audio data, a phone book, etc.), etc.
  • the memory 109 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the processor 110 is the control center of the mobile terminal. It uses various interfaces and lines to connect various parts of the entire mobile terminal. It executes various functions of the mobile terminal and processes data by running or executing software programs and/or modules stored in the memory 109, and calling data stored in the memory 109, so as to monitor the mobile terminal as a whole.
  • the processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor.
  • the application processor mainly processes the operating system, user interface, and application programs
  • the modem processor mainly processes wireless communications. It is understandable that the above-mentioned modem processor may not be integrated into the processor 110.
  • the mobile terminal 100 may also include a power supply 111 (such as a battery) for supplying power to various components.
  • a power supply 111 (such as a battery) for supplying power to various components.
  • the power supply 111 may be logically connected to the processor 110 via a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system.
  • the mobile terminal 100 may further include a Bluetooth module, etc., which will not be described in detail herein.
  • the communication network system is a NR (New Radio) system of universal mobile communication technology.
  • the NR system includes UE (User Equipment) 201, E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, EPC (Evolved Packet Core) 203 and the operator's IP service 204, which are connected in sequence.
  • UE User Equipment
  • E-UTRAN Evolved UMTS Terrestrial Radio Access Network
  • EPC Evolved Packet Core
  • UE201 may be the above-mentioned terminal device 100, which will not be described in detail here.
  • E-UTRAN 202 includes eNodeB 2021 and other eNodeBs 2022 , etc.
  • eNodeB 2021 may be connected to other eNodeBs 2022 via a backhaul (eg, an X2 interface), and eNodeB 2021 is connected to EPC 203 , and eNodeB 2021 may provide UE 201 with access to EPC 203 .
  • a backhaul eg, an X2 interface
  • EPC203 may include MME (Mobility Management Entity) 2031, HSS (Home Subscriber Server) 2032, other MMEs 2033, SGW (Serving Gate Way) 2034, PGW (PDN Gate Way) 2035 and PCRF (Policy and Charging Rules Function) 2036.
  • MME 2031 is a control node that processes signaling between UE 201 and EPC 203, providing bearer and connection management.
  • HSS 2032 is used to provide some registers to manage functions such as home location register (not shown in the figure), and save some user-specific information such as service features and data rates. All user data can be sent through SGW2034.
  • PGW2035 can provide IP address allocation and other functions for UE 201.
  • PCRF2036 is the policy and charging control policy decision point for service data flow and IP bearer resources. It selects and provides available policy and charging control decisions for the policy and charging execution functional unit (not shown in the figure).
  • IP service 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem) or other IP services.
  • IMS IP Multimedia Subsystem
  • Fig. 3 is a schematic diagram of the hardware structure of a controller 140 provided in the present application.
  • the controller 140 includes: a memory 1401 and a processor 1402, the memory 1401 is used to store program instructions, and the processor 1402 is used to call the program instructions in the memory 1401 to execute the steps performed by the controller in the first embodiment of the above method, and its implementation principle and beneficial effects are similar, which will not be repeated here.
  • the controller further includes a communication interface 1403, which can be connected to the processor 1402 via a bus 1404.
  • the processor 1402 can control the communication interface 1403 to implement the receiving and sending functions of the controller 140.
  • Fig. 4 is a schematic diagram of the hardware structure of a network node 150 provided by the present application.
  • the network node 150 includes: a memory 1501 and a processor 1502, the memory 1501 is used to store program instructions, and the processor 1502 is used to call the program instructions in the memory 1501 to execute the steps performed by the first node in the first embodiment of the above method, and its implementation principle and beneficial effects are similar, which will not be repeated here.
  • the controller further includes a communication interface 1503, which can be connected to the processor 1502 via a bus 1504.
  • the processor 1502 can control the communication interface 1503 to implement the receiving and sending functions of the network node 150.
  • the above-mentioned integrated module implemented in the form of a software function module can be stored in a computer-readable storage medium.
  • the above-mentioned software function module is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (English: processor) to perform some steps of the methods of various embodiments of the present application.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in a storage medium, or transmitted from one storage medium to another storage medium.
  • the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.).
  • the storage medium can be any available medium that can be accessed by the computer or a data storage device such as a server or data center that includes one or more available media integrated.
  • the available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a solid state drive solid state disk, SSD), etc.
  • SSB SS/PBCH Block, synchronization signal block
  • RRC Radio Resource Control, wireless resource control.
  • FIG. 5 is a schematic flow chart of a processing method according to a first embodiment of the present application.
  • the processing method according to the embodiment of the present application can be applied to a terminal device (such as a mobile phone), and includes the following steps:
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • This embodiment scheme is mainly aimed at the scenario when the network allows NES (network energy saving) users and traditional users to coexist at the same time, and optimizes the mapping mechanism of synchronization signal block (SSB) and random access opportunity (RO), so that the network equipment can effectively distinguish the beam direction used by the terminal equipment performing random access, improve resource utilization efficiency and/or reduce access delay, especially when the random access resources of NES users and traditional users conflict, it can ensure that the mapping of NES users and traditional users does not interfere with each other, and/or ensure that the network equipment can accurately determine the beam direction used by the terminal initiating random access according to the received preamble code opportunity.
  • the present application can improve the efficiency of random access, reduce access conflicts, optimize network performance, and improve the service quality of all users.
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • the downlink information includes at least one of a radio resource control message, a media access control message, a system message and downlink control information.
  • the random access resources for random access by NES users are called first random access resources, and the random access resources for random access by traditional users are called second random access resources.
  • the NES user may also use the second random access resource for random access.
  • the random access opportunity is a first random access opportunity and/or a second random access opportunity.
  • the first random access opportunity is located in the first random access resource.
  • the second random access opportunity is located in a second random access resource.
  • the first random access opportunity is applicable to four-step random access and/or two-step random access.
  • the second random access opportunity is applicable to four-step random access and/or two-step random access.
  • the first random access opportunity and/or the second random access opportunity are both valid random access opportunities.
  • the terminal device determines mapping of a synchronization signal block and a random access opportunity based on the downlink information, including at least one of the following:
  • the mapping of the synchronization signal block and the first random access opportunity is determined based on at least one of the number of synchronization signal blocks, the index of the synchronization signal block, the number of first random access opportunities in the time domain within a period of a random access opportunity, the number of first random access opportunities multiplexed in the frequency domain at a time instance, and the number of synchronization signal blocks associated with a first random access opportunity.
  • the number of synchronization signal blocks and the index of the synchronization signal block are determined according to ssb-PositionsInBurst in system message 1 (SIB1) or serving cell configuration (ServingCellConfigCommon).
  • the number of synchronization signal blocks and the index of the synchronization signal block are determined based on at least one of a wireless resource control message, a media access control message, a system message and a downlink control information.
  • the radio frame, subframe and time slot position of the first random access opportunity in the first random access resource is determined according to the radio resource control message prach-ConfigurationIndex-R19 and/or msgA-PRACH-ConfigurationIndex-R19.
  • the radio frame, subframe and time slot position of the first random access opportunity in the first random access resource is determined according to at least one of a radio resource control message, a media access control message, a system message and a downlink control information.
  • the frequency domain starting RB position of the first random access opportunity in the first random access resource on the activated bandwidth is determined according to the radio resource control message msg1-FrequencyStart-R19 and/or msgA-RO-FrequencyStart-R19.
  • the number of ROs multiplexed in the frequency domain at a time instance for a first random access opportunity in the first random access resource is determined according to the radio resource control message msg1-FDM-R19 and/or msgA-RO-FDM-R19.
  • the number of synchronization signal blocks associated with a first random access opportunity and the number of preamble codes associated with each synchronization signal block are determined according to the radio resource control message ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 and/or msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19.
  • the number of synchronization signal blocks associated with a first random access opportunity and the number of preamble codes associated with each synchronization signal block are determined based on at least one of a wireless resource control message, a media access control message, a system message and a downlink control information.
  • the terminal device determines mapping of a synchronization signal block and a random access opportunity based on the downlink information, including at least one of the following:
  • the mapping of the synchronization signal block and the second random access opportunity is determined according to the number of synchronization signal blocks, the index of the synchronization signal block, the number of second random access opportunities in the time domain within a period of a random access opportunity, and the number of second random access opportunities multiplexed in the frequency domain at a time instance.
  • the number of synchronization signal blocks and the index of the synchronization signal block are determined according to ssb-PositionsInBurst in system message 1 (SIB1) or serving cell configuration (ServingCellConfigCommon).
  • the radio frame, subframe and time slot position of the second random access opportunity in the second random access resource is determined according to the radio resource control message prach-ConfigurationIndex and/or msgA-PRACH-ConfigurationIndex.
  • the frequency domain starting RB position of the second random access opportunity in the second random access resource on the activated bandwidth is determined according to the radio resource control message msg1-FrequencyStart and/or msgA-RO-FrequencyStart.
  • the number of ROs multiplexed in the frequency domain at one time instance in the second random access opportunity in the second random access resource is determined according to the radio resource control message msg1-FDM and/or msgA-RO-FDM.
  • the number of synchronization signal blocks associated with a second random access opportunity and the number of preamble codes associated with each synchronization signal block are determined according to the radio resource control message ssb-perRACH-OccasionAndCB-PreamblesPerSSB and/or msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB.
  • the method further comprises:
  • the preamble is sent at a random access opportunity associated with at least one synchronization signal block.
  • a random access opportunity associated with at least one synchronization signal block is determined based on a mapping between the synchronization signal block and the first random access opportunity, and then a preamble code is sent at the first random access opportunity associated with at least one synchronization signal block.
  • a random access opportunity associated with at least one synchronization signal block is determined based on a mapping between the synchronization signal block and the second random access opportunity, and then a preamble code is sent at the second random access opportunity associated with at least one synchronization signal block.
  • mapping of the synchronization signal block and the random access opportunity includes at least one of the following:
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the first random access opportunity and the second random access opportunity refer to a valid first random access opportunity and a valid second random access opportunity respectively.
  • the first configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19, prach-ConfigurationIndex-R19, msgA-PRACH-ConfigurationIndex-R19, msg1-FrequencyStart-R19, msgA-RO-FrequencyStart-R19, msg1-FDM-R19, and msgA-RO-FDM-R19.
  • the second configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB, prach-ConfigurationIndex, msgA-PRACH-ConfigurationIndex, msg1-FrequencyStart, msgA-RO-FrequencyStart, msg1-FDM, and msgA-RO-FDM.
  • mapping of the synchronization signal block and the first random access opportunity and the mapping of the synchronization signal block and the second random access opportunity are independent of each other, which means that the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity and the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity are independently configured.
  • the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 of the mapping of the synchronization signal block and the first random access opportunity and the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB of the mapping of the synchronization signal block and the second random access opportunity may be the same or different.
  • the first configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19 for mapping the synchronization signal block and the first random access opportunity and the second configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB for mapping the synchronization signal block and the second random access opportunity may be the same or different.
  • the mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity, which means that at least one first configuration parameter in the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity is the same as at least one second configuration parameter in the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity.
  • the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 of the mapping of the synchronization signal block and the first random access opportunity is exactly the same as the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB of the mapping of the synchronization signal block and the second random access opportunity.
  • the first configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19 of the mapping of the synchronization signal block and the first random access opportunity is exactly the same as the second configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB of the mapping of the synchronization signal block and the second random access opportunity.
  • the mapping of the synchronization signal block and the first random access opportunity refers to the mapping of the synchronization signal block and the valid first random access opportunity.
  • mapping of the synchronization signal block and the second random access opportunity refers to the mapping of the synchronization signal block and the valid second random access opportunity.
  • the order of mapping the synchronization signal block and the random access opportunity includes:
  • the order of mapping the synchronization signal blocks and the random access opportunities refers to the order of mapping the synchronization signal blocks and the valid random access opportunities.
  • the order of mapping the synchronization signal block and the valid first random access opportunity includes:
  • the terminal device determines an order of mapping the synchronization signal block and the valid second random access opportunity, including:
  • the valid random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, and the random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access slot, then the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot is within a UL symbol, the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a common uplink and downlink configuration for time division duplex, and if the random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, then the random access opportunity in the random access slot is valid.
  • the valid second random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, and the second random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, then the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is within a UL symbol, the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the second random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the second random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the second random access opportunity, then the second random access opportunity in the random access slot is valid.
  • the valid first random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, and the first random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is within a UL symbol, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the first random access opportunity, then the first random access opportunity in the random access slot is valid.
  • the valid first random access opportunity further includes at least one of the following:
  • the first random access opportunity is not a random access opportunity that satisfies the first condition, the first random access opportunity is valid;
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, the first random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access slot is within a UL symbol, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid.
  • the random access opportunity that meets the first condition includes at least one of the following:
  • the random access opportunity that meets the first condition is an invalid first random access opportunity.
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information, thereby optimizing the mapping mechanism of the synchronization signal block and the random access opportunity, and further enabling the network device to effectively distinguish the beam direction used by the terminal device performing random access, especially when the random access resources of NES users and traditional users conflict, it can ensure that the mapping of NES users and traditional users do not interfere with each other, and/or ensure that the network device can accurately determine the beam direction used by the terminal initiating random access based on the received preamble code opportunity, thereby improving the efficiency of random access, reducing access conflicts, optimizing network performance, and improving the service quality of all users.
  • This embodiment mainly describes a processing method for sending a preamble code according to mapping.
  • This embodiment scheme is mainly aimed at the scenario when the network allows NES (network energy saving) users and traditional users to coexist at the same time, and optimizes the mapping mechanism of synchronization signal block (SSB) and random access opportunity (RO), so that the network equipment can effectively distinguish the beam direction used by the terminal equipment performing random access, improve resource utilization efficiency and/or reduce access delay, especially when the random access resources of NES users and traditional users conflict, it can ensure that the mapping of NES users and traditional users does not interfere with each other, and/or ensure that the network equipment can accurately determine the beam direction used by the terminal initiating random access according to the received preamble code opportunity.
  • the present application can improve the efficiency of random access, reduce access conflicts, optimize network performance, and improve the service quality of all users.
  • the method further includes:
  • the terminal device determines a random access opportunity associated with at least one synchronization signal block according to a mapping between the synchronization signal block and the random access opportunity, and sends a preamble code at the random access opportunity associated with at least one synchronization signal block.
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information, and determines the random access opportunity associated with at least one synchronization signal block according to the mapping of the synchronization signal block and the random access opportunity; and then sends a preamble code at the random access opportunity associated with at least one synchronization signal block.
  • the downlink information includes at least one of a radio resource control message, a media access control message, a system message and downlink control information.
  • the random access resources for random access by NES users are called first random access resources, and the random access resources for random access by traditional users are called second random access resources.
  • the NES user may also use the second random access resource for random access.
  • the random access opportunity is a first random access opportunity and/or a second random access opportunity.
  • the random access opportunity is a valid random access opportunity.
  • the terminal device determines the mapping of the synchronization signal block and the first random access opportunity based on the downlink information, and determines the first random access opportunity associated with at least one synchronization signal block according to the mapping, and then sends a preamble code at the first random access opportunity associated with at least one synchronization signal block.
  • the terminal device determines the mapping of the synchronization signal block and the second random access opportunity based on the downlink information, and determines the second random access opportunity associated with at least one synchronization signal block according to the mapping, and then sends a preamble code at the second random access opportunity associated with at least one synchronization signal block.
  • the method further comprises at least one of the following:
  • the format of the preamble transmitted at the first random access opportunity is the same as the format of the preamble transmitted at the second random access opportunity;
  • the format of the preamble transmitted at the first random access opportunity is independent of the format of the preamble transmitted at the second random access opportunity
  • the first root sequence index used to generate the preamble transmitted at the first random access opportunity is the same as the second root sequence index used to generate the preamble transmitted at the second random access opportunity;
  • the element values in the first root sequence index set used to generate the preamble transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used to generate the preamble transmitted at the second random access opportunity;
  • the synchronization signal block index mapped to the first random access opportunity is exactly the same as the synchronization signal block index mapped to the second random access opportunity;
  • At least one synchronization signal block index mapped to the first random access opportunity is different from at least one synchronization signal block index mapped to the second random access opportunity.
  • the element values in the first root sequence index set used to generate the preamble transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used to generate the preamble transmitted at the second random access opportunity, which means that the intersection of the first root sequence index set and the second root sequence index set is 0.
  • the first root sequence index set used to generate the preamble transmitted at the first random access opportunity is ⁇ u1, u1+1, u1+2 ⁇ .
  • the second root sequence index set used to generate the preamble transmitted at the second random access opportunity is ⁇ u2, u2+1 ⁇ .
  • the intersection of ⁇ u1, u1+1, u1+2 ⁇ and ⁇ u2, u2+1 ⁇ is 0.
  • the number of elements in a first root sequence index set used to generate a preamble transmitted at a first random access opportunity and the number of elements in a second root sequence index set used to generate a preamble transmitted at a second random access opportunity may be the same as or different from each other.
  • the method further comprises at least one of the following:
  • the first random access opportunity is located in the first random access resource
  • the second random access opportunity is located in the second random access resource
  • the first random access opportunity is applicable to four-step random access and/or two-step random access;
  • the first root sequence index value is the sum of the second root sequence index value and the first value
  • the value of the first root sequence index is related to the format of the preamble code and/or the length of the preamble code.
  • Delta may be a preset value or a value related to the number of terminals or terminal distribution.
  • the first root sequence index value is related to the format of the preamble code and/or the length of the preamble code and includes at least one of the following:
  • the value of the first root sequence index used to generate the preamble transmitted at the first random access opportunity is related to the format of the preamble and/or the length of the preamble;
  • preamble format 1 When the format of the preamble is preamble format 0, preamble format 1, preamble format 2, or preamble format 3, the value of the first root sequence index belongs to the set ⁇ 0, 1, ..., 837 ⁇ ;
  • the value of the first root sequence index belongs to the set ⁇ 0, 1, ..., 837 ⁇ ;
  • the value of the first root sequence index belongs to the set ⁇ 0, 1, ..., 137 ⁇ ;
  • the value of the first root sequence index belongs to the set ⁇ 0, 1, ..., 569 ⁇ ;
  • the value of the first root sequence index belongs to the set ⁇ 0, 1, ..., 1149 ⁇ .
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information, and sends the preamble code at the random access opportunity according to the mapping of the synchronization signal block and the random access opportunity, thereby optimizing the mapping mechanism of the synchronization signal block and the random access opportunity, and enabling the network device to effectively distinguish the beam direction used by the terminal device performing random access, thereby improving the efficiency of random access, reducing access conflicts, optimizing network performance, and improving the service quality of all users.
  • a third embodiment of the present application is proposed, and this embodiment mainly describes a processing method for mapping synchronization signal blocks and random access opportunities.
  • This embodiment scheme is mainly aimed at the scenario when the network allows NES (network energy saving) users and traditional users to coexist at the same time, and optimizes the mapping mechanism of synchronization signal blocks (SSB) and random access opportunities (RO) so that the network equipment can effectively distinguish the beam direction used by the terminal equipment performing random access, improve resource utilization efficiency and/or reduce access delay, especially when the random access resources of NES users and traditional users conflict, it can ensure that the mapping of NES users and traditional users does not interfere with each other, and/or ensure that the network equipment can accurately determine the beam direction used by the terminal initiating random access according to the received preamble code opportunity.
  • SSB synchronization signal blocks
  • RO random access opportunities
  • the random access resources for random access by NES users are called first random access resources, and the random access resources for random access by traditional users are called second random access resources.
  • the NES user may also use the second random access resource for random access.
  • mapping of the synchronization signal block and the random access opportunity is determined based on the downlink information.
  • the random access opportunity is a first random access opportunity and/or a second random access opportunity.
  • the first random access opportunity is located in the first random access resource.
  • the second random access opportunity is located in a second random access resource.
  • the first random access opportunity is applicable to four-step random access and/or two-step random access.
  • the random access opportunity is a valid random access opportunity.
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity. Specifically, see Figures 7 and 8.
  • the first random access opportunity and the second random access opportunity do not overlap in the time domain, but the first random access opportunity and the second random access opportunity completely overlap in the frequency domain.
  • the first random access opportunity and the second random access opportunity do not overlap in the time domain, but the first random access opportunity and the second random access opportunity partially overlap in the frequency domain.
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity. Specifically, see Figures 9 and 10.
  • the first random access opportunity and the second random access opportunity do not overlap in the frequency domain, including: at least one first random access opportunity in a random access time slot that is located at the same symbol position as the first random access opportunity, and at least one second random access opportunity in a random access time slot that is located at the same symbol position as the second random access opportunity, which do not overlap in the frequency domain.
  • the first random access opportunity and the second random access opportunity do not overlap in the frequency domain, but the first random access opportunity and the second random access opportunity completely overlap in the time domain.
  • the first random access opportunity and the second random access opportunity do not overlap in the frequency domain, but the first random access opportunity and the second random access opportunity partially overlap in the time domain.
  • the symbol index occupied by the time domain of the first random access opportunity is ⁇ 4,5 ⁇
  • the symbol index occupied by the time domain of the second random access opportunity is ⁇ 5,6 ⁇ .
  • mapping of the synchronization signal block and the first random access opportunity and the mapping of the synchronization signal block and the second random access opportunity are independent of each other, which means that the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity and the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity are independently configured.
  • the first configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19, prach-ConfigurationIndex-R19, msgA-PRACH-ConfigurationIndex-R19, msg1-FrequencyStart-R19, msgA-RO-FrequencyStart-R19, msg1-FDM-R19, and msgA-RO-FDM-R19.
  • the second configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB, prach-ConfigurationIndex, msgA-PRACH-ConfigurationIndex, msg1-FrequencyStart, msgA-RO-FrequencyStart, msg1-FDM, and msgA-RO-FDM.
  • ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19 and/or msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB are used to determine the number of valid first random access opportunities or second random access opportunities associated with a synchronization signal block.
  • the number of synchronization signal blocks associated with a valid first random access opportunity determined by ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 and/or msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19 is a value among ⁇ 8, 4, 2, 1, 1/2, 1/4, 1/8, 1/16 ⁇ .
  • prach-ConfigurationIndex-R19, msgA-PRACH-ConfigurationIndex-R19, prach-ConfigurationIndex and/or msgA-PRACH-ConfigurationIndex are used to determine the radio frame, subframe and time slot position of the first random access opportunity or the second random access opportunity.
  • msg1-FrequencyStart-R19, msgA-RO-FrequencyStart-R19, msg1-FrequencyStart and/or msgA-RO-FrequencyStart are used to determine the frequency domain starting RB position of the first random access opportunity or the second random access opportunity on the activated bandwidth.
  • msg1-FDM-R19, msgA-RO-FDM-R19, msg1-FDM and/or msgA-RO-FDM are used to determine the number of ROs multiplexed in the frequency domain at a first random access opportunity or a second random access opportunity at a time instance.
  • At least one first configuration parameter in the first configuration parameter set is the same as at least one second configuration parameter in the second configuration parameter set.
  • At least one first configuration parameter in the first configuration parameter set is different from at least one second configuration parameter in the second configuration parameter set.
  • the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 for mapping the synchronization signal block and the first random access opportunity and the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB for mapping the synchronization signal block and the second random access opportunity may be the same or different.
  • the first configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19 for mapping the synchronization signal block and the first random access opportunity and the second configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB for mapping the synchronization signal block and the second random access opportunity may be the same or different.
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity, at least one of the following is included:
  • the format of the preamble transmitted at the first random access opportunity is independent of the format of the preamble transmitted at the second random access opportunity
  • the synchronization signal block index mapped to the first random access opportunity and the synchronization signal block index mapped to the second random access opportunity are independent of each other;
  • a first root sequence index used to generate a preamble transmitted at a first random access opportunity and a second root sequence index used to generate a preamble transmitted at a second random access opportunity are independent of each other;
  • the number of synchronization signal blocks mapped on the first random access opportunity is independent of the number of synchronization signal blocks mapped on the second random access opportunity.
  • the format of the preamble code transmitted at the first random access opportunity and the format of the preamble code transmitted at the second random access opportunity are independent of each other, including: the format of the preamble code transmitted at the first random access opportunity and the format of the preamble code transmitted at the second random access opportunity are the same as or different.
  • the synchronization signal block index mapped to the first random access opportunity and the synchronization signal block index mapped to the second random access opportunity are independent of each other, including: the first root sequence index used to generate the preamble code transmitted at the first random access opportunity is the same as or different from the second root sequence index used to generate the preamble code transmitted at the second random access opportunity.
  • the first root sequence index used to generate the preamble code transmitted at the first random access opportunity and the second root sequence index used to generate the preamble code transmitted at the second random access opportunity are independent of each other, including: the first root sequence index used to generate the preamble code transmitted at the first random access opportunity and the second root sequence index used to generate the preamble code transmitted at the second random access opportunity are the same as or different.
  • the number of synchronization signal blocks mapped on the first random access opportunity and the number of synchronization signal blocks mapped on the second random access opportunity are independent of each other, including: the number of synchronization signal blocks mapped to the first random access opportunity obtained according to the downlink information is the same as or different from the number of synchronization signal blocks mapped to the second random access opportunity obtained according to the downlink information.
  • the number X of synchronization signal blocks mapped to the second random access opportunity is determined according to the ssb-PositionsInBurst in the system message 1 (SIB1) or the serving cell configuration (ServingCellConfigCommon), and the number Y of synchronization signal blocks mapped to the first random access opportunity is determined according to the ssb-PositionsInBurst-R19 in the system message 1 (SIB1) or the serving cell configuration (ServingCellConfigCommon), then X may be equal to Y, or may not be equal to Y.
  • the first random access opportunity and the second random access opportunity do not overlap in the time domain, but the first random access opportunity and the second random access opportunity completely or partially overlap in the frequency domain, the first random access opportunity and the second random access opportunity that completely or partially overlap in the frequency domain are both valid random access opportunities, and the mapping of the synchronization signal block and the overlapping first random access opportunity is independent of the mapping of the synchronization signal block and the overlapping second random access opportunity.
  • the first random access opportunity and the second random access opportunity completely overlap in the frequency domain are both valid random access opportunities.
  • the 1st and 6th groups of random access opportunities do not overlap with the 2nd to 5th groups of random access opportunities in the time domain and completely overlap in the frequency domain, if the second random access opportunities of the 1st and 6th groups meet the conditions of a valid second random access opportunity, then the second random access opportunities of the 1st and 6th groups are valid second random access opportunities; similarly, if the first random access opportunity of the 2nd to 5th groups meets the conditions of a valid first random access opportunity, then the first random access opportunity of the 2nd to 5th groups is a valid first random access opportunity.
  • the mapping of the synchronization signal block and the overlapping first random access opportunity is independent of the mapping of the synchronization signal block and the overlapping second random access opportunity. That is, the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity is independently configured with the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity.
  • at least one first configuration parameter in the first configuration parameter set is different from at least one second configuration parameter in the second configuration parameter set.
  • the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 in the first configuration parameter set and the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB in the second configuration parameter set have different values.
  • the number of valid synchronization signal blocks associated with the first random access opportunity determined by the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 is 2
  • the number of valid synchronization signal blocks associated with the first random access opportunity determined by the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB is 1.
  • the first random access opportunity and the second random access opportunity do not overlap in the frequency domain, but the first random access opportunity and the second random access opportunity completely or partially overlap in the time domain, the first random access opportunity and the second random access opportunity that completely or partially overlap in the time domain are both valid random access opportunities, and the mapping of the synchronization signal block and the overlapping first random access opportunity is independent of the mapping of the synchronization signal block and the overlapping second random access opportunity.
  • the first random access opportunity and the second random access opportunity completely overlap in the time domain are both valid random access opportunities.
  • the first group of second random access opportunities and the first group of first random access opportunities do not overlap in the frequency domain and completely overlap in the time domain, if the first group of second random access opportunities and the first group of first random access opportunities respectively meet the conditions of a valid second random access opportunity and a valid first random access opportunity, then the first group of second random access opportunities is a valid second random access opportunity, and the first group of first random access opportunities is a valid first random access opportunity; similarly, if the second group of second random access opportunities and the fifth group of first random access opportunities respectively meet the conditions of a valid second random access opportunity and a valid first random access opportunity, then the second group of second random access opportunities is a valid second random access opportunity, and the fifth group of first random access opportunities is a valid first random access opportunity.
  • the mapping of the synchronization signal block and the overlapping first random access opportunity is independent of the mapping of the synchronization signal block and the overlapping second random access opportunity. That is, the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity is independently configured with the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity.
  • at least one first configuration parameter in the first configuration parameter set is different from at least one second configuration parameter in the second configuration parameter set.
  • the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 in the first configuration parameter set and the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB in the second configuration parameter set have different values.
  • the number of valid synchronization signal blocks associated with the first random access opportunity determined by the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 is 2
  • the number of valid synchronization signal blocks associated with the first random access opportunity determined by the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB is 1.
  • the order of mapping the synchronization signal block and the random access opportunity includes:
  • the order of mapping the synchronization signal blocks and the random access opportunities refers to the order of mapping the synchronization signal blocks and the valid random access opportunities.
  • determining an order of mapping a synchronization signal block and a valid first random access opportunity includes:
  • the order of mapping the synchronization signal block and the valid second random access opportunity includes:
  • the number of synchronization signal blocks and the index of the synchronization signal block are determined according to ssb-PositionsInBurst in system message 1 (SIB1) or serving cell configuration (ServingCellConfigCommon).
  • the valid random access opportunity includes at least one of the following:
  • the network equipment does not provide the terminal equipment with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, and the random access opportunity starts at least N ⁇ a ⁇ symbols after the last symbol received in the synchronization signal block of the random access slot, then the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot is within a UL symbol, the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a common uplink and downlink time division duplex configuration, and if the random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the random access opportunity starts at least N ⁇ a ⁇ symbols after the last synchronization signal block symbol of the random access slot and at least N ⁇ a ⁇ symbols after the last downlink symbol of the random access opportunity, then the random access opportunity in the random access slot is valid.
  • the valid second random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, and the second random access opportunity starts at least N ⁇ a ⁇ symbols after the last symbol received in the synchronization signal block of the random access slot, then the second random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is within a UL symbol, the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a common uplink and downlink configuration for time division duplex, and if the second random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the second random access opportunity starts at least N ⁇ a ⁇ symbols after the last synchronization signal block symbol of the random access slot and at least N ⁇ a ⁇ symbols after the last downlink symbol of the second random access opportunity, then the second random access opportunity in the random access slot is valid.
  • the valid first random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, and the first random access opportunity starts at least N ⁇ a ⁇ symbols after the last symbol received in the synchronization signal block of the random access slot, then the first random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is within a UL symbol, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a common uplink and downlink configuration for time division duplex, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N ⁇ a ⁇ symbols after the last synchronization signal block symbol of the random access slot and at least N ⁇ a ⁇ symbols after the last downlink symbol of the first random access opportunity, then the first random access opportunity in the random access slot is valid.
  • N gap is related to the subcarrier spacing of the preamble code and satisfies Table 1.
  • N gap 0.
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information, thereby optimizing the mapping mechanism of the synchronization signal block and the random access opportunity, and enabling the network device to effectively distinguish the beam direction used by the terminal device performing random access.
  • This embodiment mainly describes a processing method for mapping synchronization signal blocks and random access opportunities.
  • This embodiment scheme is mainly aimed at the scenario when the network allows NES (network energy saving) users and traditional users to coexist at the same time, and optimizes the mapping mechanism of synchronization signal blocks (SSB) and random access opportunities (RO) so that the network equipment can effectively distinguish the beam direction used by the terminal equipment performing random access, improve resource utilization efficiency and/or reduce access delay, especially when the random access resources of NES users and traditional users conflict, it can ensure that the mapping of NES users and traditional users does not interfere with each other, and/or ensure that the network equipment can accurately determine the beam direction used by the terminal initiating random access according to the received preamble code opportunity.
  • SSB synchronization signal blocks
  • RO random access opportunities
  • the random access resources for random access by NES users are called first random access resources, and the random access resources for random access by traditional users are called second random access resources.
  • the NES user may also use the second random access resource for random access.
  • mapping of synchronization signal blocks and random access opportunities is determined based on downlink information.
  • the random access opportunity is a first random access opportunity and/or a second random access opportunity.
  • the first random access opportunity is located in the first random access resource.
  • the second random access opportunity is located in a second random access resource.
  • the first random access opportunity is applicable to four-step random access and/or two-step random access.
  • the random access opportunity is a valid random access opportunity.
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • FIG11 includes a scenario in which the first random access opportunity and the second random access opportunity completely overlap in both the time domain and the frequency domain.
  • all first random access opportunities located at the same symbol position as the first random access opportunity in a random access time slot are invalid first random access opportunities, and the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • all first random access opportunities at the same symbol position as the first random access opportunity in a random access time slot are invalid first random access opportunities.
  • the third group of first random access opportunities completely overlaps with a group of second random access opportunities in both the time domain and the frequency domain, all first random access opportunities at the same symbol position as the third group of first random access opportunities are invalid first random accesses.
  • the two first random access opportunities at the same symbol position of the third group of first random access opportunities are not used for synchronization signal block mapping, but a group of second random access opportunities overlapping with the third group of first random access opportunities can still be used for synchronization signal block mapping.
  • the mapping of the synchronization signal block and the first random access opportunity only occurs in the first, second and fourth groups of first random access opportunities; and the mapping of the synchronization signal block and the second random access opportunity still proceeds normally.
  • the synchronization signal block is mapped only at the valid first random access opportunity and/or the valid second random access opportunity.
  • two first random access opportunities in the third group of first random access opportunities located at the same symbol position are both invalid first random access opportunities.
  • the first random access opportunity that completely overlaps with the second random access opportunity in both the time domain and the frequency domain is an invalid first random access opportunity. For example, if there are two first random access opportunities in a group of first random access opportunities located at the same symbol position, and they are respectively recorded as RO#4 and RO#5, and there is one first random access opportunity in a group of second random access opportunities located at the same symbol position, and it is recorded as RO#0.
  • RO#4 and RO#0 completely overlap in both the time domain and the frequency domain, and RO#5 and RO#0 do not overlap in both the time domain and the frequency domain, then only the first random access opportunity RO#4 is an invalid first random access opportunity, and the first random access opportunity RO#5 is still a valid first random access opportunity.
  • the valid first random access opportunity includes at least one of the following:
  • the first random access opportunity is valid if the first random access opportunity is not a random access opportunity that satisfies the first condition, the first random access opportunity is valid;
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, the first random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access slot is within a UL symbol, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid.
  • the random access opportunity that meets the first condition includes at least one of the following:
  • the random access opportunity that meets the first condition is an invalid first random access opportunity.
  • the overlapping first random access opportunity and the second random access opportunity are both valid random access opportunities, but the element values in the first root sequence index set used to generate the preamble code transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used to generate the preamble code transmitted at the second random access opportunity, and the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the overlapping first random access opportunity and the second random access opportunity are both valid random access opportunities.
  • the second group of first random access opportunities are both valid random access opportunities.
  • the number of synchronization signal blocks associated with a valid first random access opportunity is 2
  • the number of synchronization signal blocks associated with a valid second random access opportunity is 1
  • the number of synchronization signal blocks is 6
  • the index of the synchronization signal block is 1 to 6
  • the synchronization signal block indexes associated with the first random access RO#3 are SSB#5 and SSB#6; and since one round of synchronization signal block mapping has been completed, the number of synchronization signal blocks associated with RO#4 is 0.
  • the synchronization signal block index associated with the second random access RO#0 is SSB#0
  • the synchronization signal block index associated with the second random access RO#1 is SSB#1.
  • the mapping of the synchronization signal block and the first random access opportunity and the mapping of the synchronization signal block and the second random access opportunity are specifically shown in Figure 13.
  • the element values in the first root sequence index set used for generating the preamble transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used for generating the preamble transmitted at the second random access opportunity.
  • the first root sequence index used for generating the preamble transmitted at the first random access opportunity RO#3 is u1
  • the number of root sequence indexes required to generate 64 preambles at the first random access opportunity is 3
  • the first root sequence index set used for generating the preamble transmitted at the first random access opportunity is ⁇ u1, u1+1, u1+2 ⁇ .
  • the second root sequence index used for generating the preamble transmitted at the second random access opportunity RO#0 is u2
  • the number of root sequence indexes required to generate 64 preambles at the second random access opportunity is 2
  • the second root sequence index set used for generating the preamble transmitted at the second random access opportunity is ⁇ u2, u2+1 ⁇ .
  • the intersection of ⁇ u1, u1+1, u1+2 ⁇ and ⁇ u2, u2+1 ⁇ is 0.
  • the first root sequence index value used for generating the preamble code transmitted at the first random access opportunity may be the sum of the second root sequence index value used for generating the preamble code transmitted at the second random access opportunity and the first value.
  • delta can be a preset value or a value related to the number of terminals or terminal distribution.
  • the valid random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, and the random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access slot, then the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot is within a UL symbol, the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a common uplink and downlink configuration for time division duplex, and if the random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, then the random access opportunity in the random access slot is valid.
  • the valid first random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, and the first random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is within a UL symbol, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the first random access opportunity, then the first random access opportunity in the random access slot is valid.
  • the valid second random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, and the second random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, then the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is within a UL symbol, the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the second random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the second random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the second random access opportunity, then the second random access opportunity in the random access slot is valid.
  • mapping of the synchronization signal block and the first random access opportunity and the mapping of the synchronization signal block and the second random access opportunity are independent of each other, which means that the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity and the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity are independently configured.
  • the first configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19, prach-ConfigurationIndex-R19, msgA-PRACH-ConfigurationIndex-R19, msg1-FrequencyStart-R19, msgA-RO-FrequencyStart-R19, msg1-FDM-R19, and msgA-RO-FDM-R19.
  • the second configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB, prach-ConfigurationIndex, msgA-PRACH-ConfigurationIndex, msg1-FrequencyStart, msgA-RO-FrequencyStart, msg1-FDM, and msgA-RO-FDM.
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity and further includes:
  • the format of the preamble transmitted at the first random access opportunity and the format of the preamble transmitted at the second random access opportunity are independent of each other, that is, the format of the preamble transmitted at the first random access opportunity and the format of the preamble transmitted at the second random access opportunity may be the same or different.
  • the overlapping first random access opportunity and the second random access opportunity are both valid random access opportunities, but the element values in the first root sequence index set used to generate the preamble code transmitted at the first random access opportunity are exactly the same as the element values in the second root sequence index set used to generate the preamble code transmitted at the second random access opportunity, and the mapping of the synchronization signal block and the first random access opportunity is also exactly the same as the mapping of the synchronization signal block and the second random access opportunity.
  • the overlapping first random access opportunity and the second random access opportunity are both valid random access opportunities.
  • the 2 first random access opportunities of the third group of first random access opportunities completely overlap with the 2 second random access opportunities of a group of second random access opportunities in the time domain and the frequency domain, then the third group of first random access opportunities and the group of second random access opportunities are both valid random access opportunities.
  • the number of synchronization signal blocks associated with a valid first random access opportunity and the number of synchronization signal blocks associated with a valid second random access opportunity are the same and are both 1, the number of synchronization signal blocks is 6, and the index of the synchronization signal block is 1 to 6.
  • the first and second random access opportunities of the third group of first random access opportunities are denoted as RO#4 and RO#5 respectively, then the synchronization signal block index associated with the first random access opportunity RO#4 is SSB#5, and the synchronization signal block index associated with the first random access opportunity RO#5 is SSB#6.
  • the two second random access opportunities of a group of second random access opportunities that completely overlap with the two first random access opportunities of the third group of first random access opportunities in both time domain and frequency domain are respectively denoted as RO#0 and RO#1
  • the synchronization signal block index associated with RO#0 is SSB#1
  • the synchronization signal block index associated with RO#1 is SSB#2.
  • the mapping of the synchronization signal block and the first random access opportunity and the mapping of the synchronization signal block and the second random access opportunity are specifically shown in Figure 14.
  • the element values in the first root sequence index set used to generate the preamble transmitted on the first random access opportunity are exactly the same as the element values in the second root sequence index set used to generate the preamble transmitted on the second random access opportunity.
  • the first root sequence index is u1
  • the second root sequence index is u2
  • u1 u2.
  • the same group of preambles can be grouped to distinguish whether the random access opportunity is used as the first random access opportunity or the second random access opportunity, and the index of the synchronization signal block associated with the random access opportunity.
  • the mapping of the synchronization signal block and the first random access opportunity is also exactly the same as the mapping of the synchronization signal block and the second random access opportunity.
  • the number of synchronization signal blocks associated with a valid first random access opportunity is N1
  • the element values in the first root sequence index set used to generate the preamble code transmitted at the first random access opportunity are exactly the same as the element values in the second root sequence index set used to generate the preamble code transmitted at the second random access opportunity
  • the mapping of the synchronization signal block and the first random access opportunity is also exactly the same as the mapping of the synchronization signal block and the second random access opportunity.
  • the same group of root sequences is partitioned according to the following method:
  • the preamble of one random access opportunity is allocated to only one SSB
  • the first R consecutive preambles are used for contention-based random access (including four-step random access and/or two-step random access) at the second random access opportunity
  • consecutive Q preambles used for contention-based random access including four-step random access and/or two-step random access
  • the remaining S (total number of preambles)-R-Q preambles are allocated to contention-free random access (including contention-free random access at the first random access opportunity and contention-free random access at the second random access opportunity);
  • the preamble code of a random access opportunity is evenly distributed to 2*N SSBs, each SSB obtains continuous S/(2*N), the starting point is n*(S/(2*N))(0 ⁇ n ⁇ 2*N-1), and the first S/2 preamble codes are used as each SSB to perform contention-based random access (including four-step random access and/or two-step random access) at the second random access opportunity and contention-free random access at the second random access opportunity in order of SSB index, and the last S/2 preamble codes are used as each SSB to perform contention-based random access (including four-step random access and/or two-step random access) at the first random access opportunity and contention-free random access at the first random access opportunity.
  • contention-based random access including four-step random access and/or two-step random access
  • contention-free random access contention-based random access
  • the total number S of preambles of a random access opportunity (RO) is configured according to a higher layer parameter totalNumberOfRA-Preambles.
  • the number of synchronization signal blocks associated with a random access opportunity and the number of preamble codes associated with each synchronization signal block are configured according to the high-level parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB.
  • the mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity, which means that at least one configuration parameter in the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity is the same as at least one configuration parameter in the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity.
  • the first configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19, prach-ConfigurationIndex-R19, msgA-PRACH-ConfigurationIndex-R19, msg1-FrequencyStart-R19, msgA-RO-FrequencyStart-R19, msg1-FDM-R19, and msgA-RO-FDM-R19.
  • the second configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB, prach-ConfigurationIndex, msgA-PRACH-ConfigurationIndex, msg1-FrequencyStart, msgA-RO-FrequencyStart, msg1-FDM, and msgA-RO-FDM.
  • mapping of the synchronization signal block and the first random access opportunity is completely identical to the mapping of the synchronization signal block and the second random access opportunity, including at least one of the following:
  • the format of the preamble transmitted at the first random access opportunity is the same as the format of the preamble transmitted at the second random access opportunity;
  • a first root sequence index used to generate a preamble transmitted at the first random access opportunity is the same as a second root sequence index used to generate a preamble transmitted at the second random access opportunity;
  • the synchronization signal block index mapped to the first random access opportunity is exactly the same as the synchronization signal block index mapped to the second random access opportunity;
  • At least one synchronization signal block index mapped to the first random access opportunity is different from at least one synchronization signal block index mapped to the second random access opportunity;
  • the number of synchronization signal blocks associated with a valid first random access opportunity is the same as the number of synchronization signal blocks associated with a valid second random access opportunity.
  • the valid random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, and the random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access slot, then the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot is within a UL symbol, the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a common uplink and downlink configuration for time division duplex, and if the random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, then the random access opportunity in the random access slot is valid.
  • the valid first random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, and the first random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is within a UL symbol, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the first random access opportunity, then the first random access opportunity in the random access slot is valid.
  • the valid second random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, and the second random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, then the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is within a UL symbol, the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the second random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the second random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the second random access opportunity, then the second random access opportunity in the random access slot is valid.
  • the order of mapping the synchronization signal block and the random access opportunity includes:
  • the order of mapping the synchronization signal blocks and the random access opportunities refers to the order of mapping the synchronization signal blocks and the valid random access opportunities.
  • the order of mapping the synchronization signal block and the valid first random access opportunity includes:
  • the order of mapping the synchronization signal block and the valid second random access opportunity includes:
  • a value of a first root sequence index used to generate a preamble code transmitted at the first random access opportunity is related to a format of the preamble code and/or a length of the preamble code.
  • the value of the first root sequence index belongs to the set ⁇ 0, 1, ..., 837 ⁇ .
  • the value of the first root sequence index belongs to the set ⁇ 0, 1, ..., 837 ⁇ .
  • the preamble format is preamble format A1, preamble format A2, preamble format A3, preamble format B1, preamble format B2, preamble format B3, preamble format B4, preamble format C0, preamble format C2, and the preamble length is 139
  • the value of the first root sequence index belongs to the set ⁇ 0, 1, ..., 137 ⁇ .
  • the preamble format is preamble format A1, preamble format A2, preamble format A3, preamble format B1, preamble format B2, preamble format B3, preamble format B4, preamble format C0, preamble format C2, and the preamble length is 571
  • the value of the first root sequence index belongs to the set ⁇ 0, 1, ..., 569 ⁇ .
  • the preamble format is preamble format A1, preamble format A2, preamble format A3, preamble format B1, preamble format B2, preamble format B3, preamble format B4, preamble format C0, preamble format C2, and the preamble length is 1151
  • the value of the first root sequence index belongs to the set ⁇ 0, 1, ..., 1149 ⁇ .
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information, thereby optimizing the mapping mechanism of the synchronization signal block and the random access opportunity, and enabling the network device to effectively distinguish the beam direction used by the terminal device performing random access.
  • This embodiment mainly describes a processing method for mapping synchronization signal blocks and random access opportunities.
  • This embodiment scheme is mainly aimed at the scenario when the network allows NES (network energy saving) users and traditional users to coexist at the same time, and optimizes the mapping mechanism of synchronization signal blocks (SSB) and random access opportunities (RO) so that the network equipment can effectively distinguish the beam direction used by the terminal equipment performing random access, improve resource utilization efficiency and/or reduce access delay, especially when the random access resources of NES users and traditional users conflict, it can ensure that the mapping of NES users and traditional users does not interfere with each other, and/or ensure that the network equipment can accurately determine the beam direction used by the terminal initiating random access according to the received preamble code opportunity.
  • SSB synchronization signal blocks
  • RO random access opportunities
  • the random access resources for random access by NES users are called first random access resources, and the random access resources for random access by traditional users are called second random access resources.
  • the NES user may also use the second random access resource for random access.
  • mapping of synchronization signal blocks and random access opportunities is determined based on downlink information.
  • the random access opportunity is a first random access opportunity and/or a second random access opportunity.
  • the first random access opportunity is located in the first random access resource.
  • the second random access opportunity is located in a second random access resource.
  • the first random access opportunity is applicable to four-step random access and/or two-step random access.
  • the random access opportunity is a valid random access opportunity.
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • all first random access opportunities at the same symbol position as the first random access opportunity in a random access time slot are invalid first random access opportunities, and the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • all first random access opportunities located at the same symbol position as the first random access opportunity in a random access slot are invalid first random access opportunities.
  • the number of first random access opportunities located at the same symbol position as the first random access opportunity in a random access slot is 2, and are respectively recorded as RO#2 and RO#3
  • the first random access opportunity RO#2 completely overlaps with the second random access opportunity RO#0 in the time domain, but the first random access opportunity RO#2 and the second random access opportunity RO#0 partially overlap in the frequency domain
  • the first random access opportunities RO#2 and RO#3 are both invalid first random access opportunities
  • the second random access opportunity RO#0 can be a valid second random access opportunity if it meets the conditions of a valid second random access opportunity.
  • the first random access opportunity that completely overlaps in the time domain but partially overlaps with the second random access opportunity in the frequency domain is an invalid first random access opportunity
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the first random access opportunity that completely overlaps in the time domain but partially overlaps in the frequency domain with the second random access opportunity is an invalid first random access opportunity.
  • the number of first random access opportunities located at the same symbol position as the first random access opportunity in a random access time slot is 2, and are respectively recorded as RO#2 and RO#3
  • the first random access opportunity RO#2 completely overlaps with the second random access opportunity RO#0 in the time domain, but the first random access opportunity and the second random access opportunity partially overlap in the frequency domain
  • only the first random access opportunity RO#2 is an invalid first random access opportunity
  • the first random access opportunity RO#3 meets the conditions of a valid first random access opportunity, it can be a valid first random access opportunity
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the number of first random access opportunities located at the same symbol position as the first random access opportunity in a random access slot is 2, and are respectively recorded as RO#2 and RO#3
  • the first random access opportunity RO#2 completely overlaps with the second random access opportunity RO#0 in the frequency domain, but the first random access opportunity and the second random access opportunity partially overlap in the time domain
  • the first random access opportunities RO#2 and RO#3 are both invalid first random access opportunities
  • the second random access opportunity RO#0 can be a valid second random access opportunity if it meets the conditions of a valid second random access opportunity.
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the number of first random access opportunities at the same symbol position as the first random access opportunity in a random access time slot is 2, and is recorded as RO#2 and RO#3, and suppose that the first random access opportunity RO#2 completely overlaps with the second random access opportunity RO#0 in the frequency domain, but the first random access opportunity and the second random access opportunity partially overlap in the time domain, then only the first random access opportunity RO#2 is an invalid first random access opportunity, and if the first random access opportunity RO#3 meets the conditions of a valid first random access opportunity, it can be a valid first random access opportunity. Similarly, if the second random access opportunity RO#0 meets the conditions of a valid second random access opportunity, it can be a valid second random access opportunity.
  • mapping of the synchronization signal block and the first random access opportunity refers to: mapping of the synchronization signal block and the valid first random access opportunity.
  • mapping of the synchronization signal block and the first random access opportunity and the mapping of the synchronization signal block and the second random access opportunity are independent of each other, which means that the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity and the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity are independently configured.
  • the first configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19, prach-ConfigurationIndex-R19, msgA-PRACH-ConfigurationIndex-R19, msg1-FrequencyStart-R19, msgA-RO-FrequencyStart-R19, msg1-FDM-R19, and msgA-RO-FDM-R19.
  • the second configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB, prach-ConfigurationIndex, msgA-PRACH-ConfigurationIndex, msg1-FrequencyStart, msgA-RO-FrequencyStart, msg1-FDM, and msgA-RO-FDM.
  • the valid first random access opportunity further includes at least one of the following:
  • the first random access opportunity is valid if the first random access opportunity is not a random access opportunity that satisfies the first condition, the first random access opportunity is valid;
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, the first random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access slot is within a UL symbol, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid.
  • the random access opportunity that meets the first condition includes at least one of the following:
  • the random access opportunity that meets the first condition is an invalid first random access opportunity.
  • the element values in the first root sequence index set used for generating the preamble code transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used for generating the preamble code transmitted at the second random access opportunity, and the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the first random access opportunity and the second random access opportunity when the first random access opportunity and the second random access opportunity completely overlap in the time domain, but the first random access opportunity and the second random access opportunity partially overlap in the frequency domain, or when the first random access opportunity and the second random access opportunity completely overlap in the frequency domain, but the first random access opportunity and the second random access opportunity partially overlap in the time domain, the first random access opportunity and the second random access opportunity that completely overlap in the frequency domain and partially overlap in the time domain are both valid random access opportunities.
  • the element values in the first root sequence index set used for generating the preamble code transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used for generating the preamble code transmitted at the second random access opportunity, and the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the first root sequence index value used for generating the preamble code transmitted at the first random access opportunity is the sum of the second root sequence index value used for generating the preamble code transmitted at the second random access opportunity and the first value
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the valid random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, and the random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access slot, then the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot is within a UL symbol, the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, the random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, then the random access opportunity in the random access slot is valid;
  • the valid second random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, and the second random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, then the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is within a UL symbol, the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the second random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the second random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the second random access opportunity, then the second random access opportunity in the random access slot is valid.
  • the order of mapping the synchronization signal block and the random access opportunity includes:
  • the order of mapping the synchronization signal block and the valid first random access opportunity includes:
  • the order of mapping the synchronization signal block and the valid second random access opportunity includes:
  • the number of synchronization signal blocks and the index of the synchronization signal block are determined according to ssb-PositionsInBurst in system message 1 (SIB1) or serving cell configuration (ServingCellConfigCommon).
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information, thereby optimizing the mapping mechanism of the synchronization signal block and the random access opportunity, and enabling the network device to effectively distinguish the beam direction used by the terminal device performing random access.
  • mapping of the synchronization signal block and the first random access opportunity and the mapping of the synchronization signal block and the second random access opportunity are independent of each other, which means that the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity and the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity are independently configured.
  • the first configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19, prach-ConfigurationIndex-R19, msgA-PRACH-ConfigurationIndex-R19, msg1-FrequencyStart-R19, msgA-RO-FrequencyStart-R19, msg1-FDM-R19, and msgA-RO-FDM-R19.
  • the second configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB, prach-ConfigurationIndex, msgA-PRACH-ConfigurationIndex, msg1-FrequencyStart, msgA-RO-FrequencyStart, msg1-FDM, and msgA-RO-FDM.
  • the element values in the first root sequence index set used to generate the preamble code transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used to generate the preamble code transmitted at the second random access opportunity.
  • the first root sequence index value used to generate the preamble code transmitted at the first random access opportunity is the sum of the second root sequence index value used to generate the preamble code transmitted at the second random access opportunity and the first value.
  • the valid random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, and the random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access slot, then the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot is within a UL symbol, the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, the random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, then the random access opportunity in the random access slot is valid;
  • the valid second random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, and the second random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, then the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access time slot is within a UL symbol, the second random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the second random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the second random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the second random access opportunity, then the second random access opportunity in the random access slot is valid;
  • the order of mapping the synchronization signal block and the random access opportunity includes:
  • the order of mapping the synchronization signal blocks and the random access opportunities refers to the order of mapping the synchronization signal blocks and the valid random access opportunities.
  • the order of mapping the synchronization signal block and the valid first random access opportunity includes:
  • the order of mapping the synchronization signal block and the valid second random access opportunity includes:
  • the number of synchronization signal blocks and the index of the synchronization signal block are determined according to ssb-PositionsInBurst in system message 1 (SIB1) or serving cell configuration (ServingCellConfigCommon).
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information, thereby optimizing the mapping mechanism of the synchronization signal block and the random access opportunity, and enabling the network device to effectively distinguish the beam direction used by the terminal device performing random access.
  • FIG. 15 is a flow chart of a processing method according to a seventh embodiment of the present application.
  • the processing method according to the embodiment of the present application can be applied to a network device (such as a base station), and includes the following steps:
  • the network device sends downlink information so that the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • This embodiment scheme is mainly aimed at the scenario when the network allows NES (network energy saving) users and traditional users to coexist at the same time, and optimizes the mapping mechanism of synchronization signal block (SSB) and random access opportunity (RO), so that the network equipment can effectively distinguish the beam direction used by the terminal equipment performing random access, improve resource utilization efficiency and/or reduce access delay, especially when the random access resources of NES users and traditional users conflict, it can ensure that the mapping of NES users and traditional users does not interfere with each other, and/or ensure that the network equipment can accurately determine the beam direction used by the terminal initiating random access according to the received preamble code opportunity.
  • the present application can improve the efficiency of random access, reduce access conflicts, optimize network performance, and improve the service quality of all users.
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • the downlink information includes at least one of a radio resource control message, a media access control message, a system message and downlink control information.
  • the random access resources for random access by NES users are called first random access resources, and the random access resources for random access by traditional users are called second random access resources.
  • the NES user may also use the second random access resource for random access.
  • the random access opportunity is a first random access opportunity and/or a second random access opportunity.
  • the second random access opportunity is located in a second random access resource.
  • the first random access opportunity is applicable to four-step random access and/or two-step random access.
  • the second random access opportunity is applicable to four-step random access and/or two-step random access.
  • the first random access opportunity and/or the second random access opportunity are both valid random access opportunities.
  • the terminal device determines mapping of a synchronization signal block and a random access opportunity based on the downlink information, including at least one of the following:
  • the mapping of the synchronization signal block and the first random access opportunity is determined based on at least one of the number of synchronization signal blocks, the index of the synchronization signal block, the number of first random access opportunities in the time domain within a period of a random access opportunity, the number of first random access opportunities multiplexed in the frequency domain at a time instance, and the number of synchronization signal blocks associated with a first random access opportunity.
  • the terminal device determines the number of synchronization signal blocks and the index of the synchronization signal block according to ssb-PositionsInBurst in system message 1 (SIB1) or serving cell configuration (ServingCellConfigCommon).
  • the terminal device determines the number of synchronization signal blocks and the index of the synchronization signal block based on at least one of a wireless resource control message, a media access control message, a system message and a downlink control information.
  • the number of synchronization signal blocks actually transmitted mapped on the first random access opportunity may be the same as or different from the number of synchronization signal blocks actually transmitted mapped on the first random access opportunity.
  • the radio frame, subframe and time slot position of the first random access opportunity in the first random access resource is determined according to the radio resource control message prach-ConfigurationIndex-R19 and/or msgA-PRACH-ConfigurationIndex-R19.
  • the terminal device determines the radio frame, subframe and time slot position of the first random access opportunity in the first random access resource based on at least one of the radio resource control message, the media access control message, the system message and the downlink control information.
  • the frequency domain starting RB position of the first random access opportunity in the first random access resource on the activated bandwidth is determined according to the radio resource control message msg1-FrequencyStart-R19 and/or msgA-RO-FrequencyStart-R19.
  • the number of ROs multiplexed in the frequency domain at a time instance for a first random access opportunity in the first random access resource is determined according to the radio resource control message msg1-FDM-R19 and/or msgA-RO-FDM-R19.
  • the terminal device determines mapping of a synchronization signal block and a random access opportunity based on the downlink information, including at least one of the following:
  • the mapping of the synchronization signal block and the second random access opportunity is determined according to the number of synchronization signal blocks, the index of the synchronization signal block, the number of second random access opportunities in the time domain within a period of a random access opportunity, and the number of second random access opportunities multiplexed in the frequency domain at a time instance.
  • the terminal device determines the number of synchronization signal blocks and the index of the synchronization signal block according to ssb-PositionsInBurst in system message 1 (SIB1) or serving cell configuration (ServingCellConfigCommon).
  • the radio frame, subframe and time slot position of the second random access opportunity in the second random access resource is determined according to the radio resource control message prach-ConfigurationIndex and/or msgA-PRACH-ConfigurationIndex.
  • the frequency domain starting RB position of the second random access opportunity in the second random access resource on the activated bandwidth is determined according to the radio resource control message msg1-FrequencyStart and/or msgA-RO-FrequencyStart.
  • the number of ROs multiplexed in the frequency domain at one time instance in the second random access opportunity in the second random access resource is determined according to the radio resource control message msg1-FDM and/or msgA-RO-FDM.
  • mapping of the synchronization signal block and the random access opportunity includes at least one of the following:
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the first random access opportunity and the second random access opportunity refer to a valid first random access opportunity and a valid second random access opportunity, respectively.
  • the first configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19, prach-ConfigurationIndex-R19, msgA-PRACH-ConfigurationIndex-R19, msg1-FrequencyStart-R19, msgA-RO-FrequencyStart-R19, msg1-FDM-R19, and msgA-RO-FDM-R19.
  • the second configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB, prach-ConfigurationIndex, msgA-PRACH-ConfigurationIndex, msg1-FrequencyStart, msgA-RO-FrequencyStart, msg1-FDM, and msgA-RO-FDM.
  • mapping of the synchronization signal block and the first random access opportunity and the mapping of the synchronization signal block and the second random access opportunity are independent of each other, which means that the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity and the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity are independently configured.
  • the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 of the mapping of the synchronization signal block and the first random access opportunity and the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB of the mapping of the synchronization signal block and the second random access opportunity may be the same or different.
  • the first configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19 for mapping the synchronization signal block and the first random access opportunity and the second configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB for mapping the synchronization signal block and the second random access opportunity may be the same or different.
  • the mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity, which means that at least one first configuration parameter in the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity is the same as at least one second configuration parameter in the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity.
  • the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 of the mapping of the synchronization signal block and the first random access opportunity is exactly the same as the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB of the mapping of the synchronization signal block and the second random access opportunity.
  • the first configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19 of the mapping of the synchronization signal block and the first random access opportunity is exactly the same as the second configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB of the mapping of the synchronization signal block and the second random access opportunity.
  • the mapping of the synchronization signal block and the first random access opportunity refers to the mapping of the synchronization signal block and the valid first random access opportunity.
  • mapping of the synchronization signal block and the second random access opportunity refers to the mapping of the synchronization signal block and the valid second random access opportunity.
  • ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB are used to determine the number of valid first random access opportunities or second random access opportunities associated with a synchronization signal block.
  • the order of mapping the synchronization signal block and the random access opportunity includes:
  • the order of mapping the synchronization signal blocks and the random access opportunities refers to the order of mapping the synchronization signal blocks and the valid random access opportunities.
  • the order of mapping the synchronization signal block and the valid first random access opportunity includes:
  • the terminal device determines an order of mapping the synchronization signal block and the valid second random access opportunity, including:
  • the method further comprises at least one of the following:
  • the format of the preamble transmitted at the first random access opportunity is the same as the format of the preamble transmitted at the second random access opportunity;
  • the format of the preamble transmitted at the first random access opportunity is independent of the format of the preamble transmitted at the second random access opportunity
  • the first root sequence index used to generate the preamble transmitted at the first random access opportunity is the same as the second root sequence index used to generate the preamble transmitted at the second random access opportunity;
  • the element values in the first root sequence index set used to generate the preamble transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used to generate the preamble transmitted at the second random access opportunity;
  • the synchronization signal block index mapped to the first random access opportunity is exactly the same as the synchronization signal block index mapped to the second random access opportunity;
  • At least one synchronization signal block index mapped to the first random access opportunity is different from at least one synchronization signal block index mapped to the second random access opportunity.
  • the first root sequence index value is the sum of the second root sequence index value and the first value.
  • the value of the first root sequence index is related to the format of the preamble code and/or the length of the preamble code.
  • the valid random access opportunity includes at least one of the following:
  • the random access opportunity in a random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access slot is within a UL symbol, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid.
  • the random access opportunity that meets the first condition includes at least one of the following:
  • the random access opportunity that meets the first condition is an invalid random access opportunity.
  • the method further comprises:
  • the terminal device determines a random access opportunity associated with at least one synchronization signal block according to a mapping between the synchronization signal block and the random access opportunity, and sends a preamble code at the random access opportunity associated with at least one synchronization signal block.
  • the network device receives the preamble code according to the mapping of the synchronization signal block and the random access opportunity.
  • the network device sends downlink information, and the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information, thereby optimizing the mapping mechanism of the synchronization signal block and the random access opportunity, and enabling the network device to effectively distinguish the beam direction used by the terminal device performing random access.
  • FIG. 16 is a schematic diagram of an interaction process between a network device and a terminal device according to a processing method shown in the eighth embodiment.
  • the ninth embodiment of the present application proposes a processing method, comprising the steps of:
  • the network device sends downlink information so that the terminal device determines the mapping between the synchronization signal block and the random access opportunity based on the downlink information;
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • the downlink information includes at least one of a radio resource control message, a media access control message, a system message and downlink control information.
  • the random access resources for random access by NES users are called first random access resources, and the random access resources for random access by traditional users are called second random access resources.
  • the NES user may also use the second random access resource for random access.
  • the first random access opportunity is located in the first random access resource.
  • the second random access opportunity is located in a second random access resource.
  • the first random access opportunity is applicable to four-step random access and/or two-step random access.
  • the second random access opportunity is applicable to four-step random access and/or two-step random access.
  • the first random access opportunity and/or the second random access opportunity are both valid random access opportunities.
  • the terminal device determines mapping of a synchronization signal block and a random access opportunity based on the downlink information, including at least one of the following:
  • the mapping of the synchronization signal block and the first random access opportunity is determined based on at least one of the number of synchronization signal blocks, the index of the synchronization signal block, the number of first random access opportunities in the time domain within a period of a random access opportunity, the number of first random access opportunities multiplexed in the frequency domain at a time instance, and the number of synchronization signal blocks associated with a first random access opportunity.
  • the terminal device determines the number of synchronization signal blocks and the index of the synchronization signal block according to ssb-PositionsInBurst in system message 1 (SIB1) or serving cell configuration (ServingCellConfigCommon).
  • the terminal device determines the number of synchronization signal blocks and the index of the synchronization signal block based on at least one of a wireless resource control message, a media access control message, a system message and a downlink control information.
  • the number of synchronization signal blocks actually transmitted mapped on the first random access opportunity may be the same as or different from the number of synchronization signal blocks actually transmitted mapped on the first random access opportunity.
  • the radio frame, subframe and time slot position of the first random access opportunity in the first random access resource is determined according to the radio resource control message prach-ConfigurationIndex-R19 and/or msgA-PRACH-ConfigurationIndex-R19.
  • the terminal device determines the radio frame, subframe and time slot position of the first random access opportunity in the first random access resource based on at least one of the radio resource control message, the media access control message, the system message and the downlink control information.
  • the frequency domain starting RB position of the first random access opportunity in the first random access resource on the activated bandwidth is determined according to the radio resource control message msg1-FrequencyStart-R19 and/or msgA-RO-FrequencyStart-R19.
  • the number of ROs multiplexed in the frequency domain at a time instance for a first random access opportunity in the first random access resource is determined according to the radio resource control message msg1-FDM-R19 and/or msgA-RO-FDM-R19.
  • the terminal device determines mapping of a synchronization signal block and a random access opportunity based on the downlink information, including at least one of the following:
  • the mapping of the synchronization signal block and the second random access opportunity is determined according to the number of synchronization signal blocks, the index of the synchronization signal block, the number of second random access opportunities in the time domain within a period of a random access opportunity, and the number of second random access opportunities multiplexed in the frequency domain at a time instance.
  • the terminal device determines the number of synchronization signal blocks and the index of the synchronization signal block according to ssb-PositionsInBurst in system message 1 (SIB1) or serving cell configuration (ServingCellConfigCommon).
  • the radio frame, subframe and time slot position of the second random access opportunity in the second random access resource is determined according to the radio resource control message prach-ConfigurationIndex and/or msgA-PRACH-ConfigurationIndex.
  • the frequency domain starting RB position of the second random access opportunity in the second random access resource on the activated bandwidth is determined according to the radio resource control message msg1-FrequencyStart and/or msgA-RO-FrequencyStart.
  • the number of ROs multiplexed in the frequency domain at one time instance for the second random access opportunity in the second random access resource is determined according to the radio resource control message msg1-FDM and/or msgA-RO-FDM.
  • mapping of the synchronization signal block and the random access opportunity includes at least one of the following:
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the first random access opportunity and the second random access opportunity refer to a valid first random access opportunity and a valid second random access opportunity respectively.
  • the first configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19, prach-ConfigurationIndex-R19, msgA-PRACH-ConfigurationIndex-R19, msg1-FrequencyStart-R19, msgA-RO-FrequencyStart-R19, msg1-FDM-R19, and msgA-RO-FDM-R19.
  • the second configuration parameter set includes at least one of ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB, prach-ConfigurationIndex, msgA-PRACH-ConfigurationIndex, msg1-FrequencyStart, msgA-RO-FrequencyStart, msg1-FDM, and msgA-RO-FDM.
  • mapping of the synchronization signal block and the first random access opportunity and the mapping of the synchronization signal block and the second random access opportunity are independent of each other, which means that the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity and the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity are independently configured.
  • the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 of the mapping of the synchronization signal block and the first random access opportunity and the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB of the mapping of the synchronization signal block and the second random access opportunity may be the same or different.
  • the first configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19 for mapping the synchronization signal block and the first random access opportunity and the second configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB for mapping the synchronization signal block and the second random access opportunity may be the same or different.
  • the mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity, which means that at least one first configuration parameter in the first configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the first random access opportunity is the same as at least one second configuration parameter in the second configuration parameter set in the downlink information related to the mapping of the synchronization signal block and the second random access opportunity.
  • the first configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 of the mapping of the synchronization signal block and the first random access opportunity is exactly the same as the second configuration parameter ssb-perRACH-OccasionAndCB-PreamblesPerSSB of the mapping of the synchronization signal block and the second random access opportunity.
  • the first configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19 of the mapping of the synchronization signal block and the first random access opportunity is exactly the same as the second configuration parameter msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB of the mapping of the synchronization signal block and the second random access opportunity.
  • the mapping of the synchronization signal block and the first random access opportunity refers to the mapping of the synchronization signal block and the valid first random access opportunity.
  • mapping of the synchronization signal block and the second random access opportunity refers to the mapping of the synchronization signal block and the valid second random access opportunity.
  • ssb-perRACH-OccasionAndCB-PreamblesPerSSB-R19 ssb-perRACH-OccasionAndCB-PreamblesPerSSB, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB-R19, msgA-SSBPerRACH-OccasionAndCB-PreamblesPerSSB are used to determine the number of valid first random access opportunities or second random access opportunities associated with a synchronization signal block.
  • the order of mapping the synchronization signal block and the random access opportunity includes:
  • the order of mapping the synchronization signal blocks and the random access opportunities refers to the order of mapping the synchronization signal blocks and the valid random access opportunities.
  • the order of mapping the synchronization signal block and the valid first random access opportunity includes:
  • the terminal device determines an order of mapping the synchronization signal block and the valid second random access opportunity, including:
  • the method further comprises at least one of the following:
  • the format of the preamble transmitted at the first random access opportunity is the same as the format of the preamble transmitted at the second random access opportunity;
  • the format of the preamble transmitted at the first random access opportunity is independent of the format of the preamble transmitted at the second random access opportunity
  • the first root sequence index used to generate the preamble transmitted at the first random access opportunity is the same as the second root sequence index used to generate the preamble transmitted at the second random access opportunity;
  • the element values in the first root sequence index set used to generate the preamble transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used to generate the preamble transmitted at the second random access opportunity;
  • the synchronization signal block index mapped to the first random access opportunity is exactly the same as the synchronization signal block index mapped to the second random access opportunity;
  • At least one synchronization signal block index mapped to the first random access opportunity is different from at least one synchronization signal block index mapped to the second random access opportunity.
  • the first root sequence index value is the sum of the second root sequence index value and the first value.
  • the value of the first root sequence index is related to the format of the preamble code and/or the length of the preamble code.
  • the valid random access opportunity includes at least one of the following:
  • the random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, then the random access opportunity in the random access slot is valid;
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, the first random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access time slot is valid;
  • the random access opportunity that meets the first condition is an invalid random access opportunity.
  • the method further comprises the steps of:
  • the terminal device determines a random access opportunity associated with at least one synchronization signal block according to a mapping between the synchronization signal block and the random access opportunity, and sends a preamble code at the random access opportunity associated with at least one synchronization signal block.
  • the network device receives the preamble code according to the mapping of the synchronization signal block and the random access opportunity.
  • the network device sends downlink information, and the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information, thereby optimizing the mapping mechanism of the synchronization signal block and the random access opportunity, and enabling the network device to effectively distinguish the beam direction used by the terminal device performing random access.
  • Figure 17 is a schematic diagram of the structure of a processing device provided in an embodiment of the present application.
  • the device can be mounted on or is the terminal device in the above method embodiment.
  • the device 160 includes:
  • the determination module 1601 is used to determine the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • the device further comprises:
  • the preamble is sent at a random access opportunity associated with at least one synchronization signal block.
  • the device further comprises at least one of the following:
  • the downlink information includes at least one of a radio resource control message, a media access control message, a system message, and downlink control information;
  • the random access opportunity is the first random access opportunity and/or the second random access opportunity
  • the random access opportunity is a valid random access opportunity.
  • mapping of the synchronization signal block and the random access opportunity includes at least one of the following:
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the device further comprises at least one of the following:
  • the format of the preamble transmitted at the first random access opportunity is the same as the format of the preamble transmitted at the second random access opportunity;
  • the format of the preamble transmitted at the first random access opportunity is independent of the format of the preamble transmitted at the second random access opportunity
  • the first root sequence index used to generate the preamble transmitted at the first random access opportunity is the same as the second root sequence index used to generate the preamble transmitted at the second random access opportunity;
  • the element values in the first root sequence index set used to generate the preamble transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used to generate the preamble transmitted at the second random access opportunity;
  • the synchronization signal block index mapped to the first random access opportunity is exactly the same as the synchronization signal block index mapped to the second random access opportunity;
  • At least one synchronization signal block index mapped to the first random access opportunity is different from at least one synchronization signal block index mapped to the second random access opportunity.
  • the device further comprises at least one of the following:
  • the first random access opportunity is located in the first random access resource
  • the second random access opportunity is located in the second random access resource
  • the first random access opportunity is applicable to four-step random access and/or two-step random access;
  • the first root sequence index value is the sum of the second root sequence index value and the first value
  • the value of the first root sequence index is related to the format of the preamble code and/or the length of the preamble code
  • Determine the order of mapping the synchronization signal block and the random access opportunity including: first, according to the ascending order of the preamble code index within a random access opportunity; second, according to the ascending order of the frequency domain resource index of the random access opportunity multiplexed in the frequency domain; third, according to the ascending order of the time domain resource index of the random access opportunity multiplexed in the time domain within a random access time slot; fourth, according to the ascending order of the index of the random access time slot.
  • the valid random access opportunity includes at least one of the following:
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, and the random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access slot, then the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot is within a UL symbol, the random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the random access opportunity in a random access slot does not precede the synchronization signal block of the random access slot, the random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, then the random access opportunity in the random access slot is valid;
  • the first random access opportunity is valid if the first random access opportunity is not a random access opportunity that satisfies the first condition, the first random access opportunity is valid;
  • the network device does not provide the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access time slot is not before the synchronization signal block of the random access time slot, the first random access opportunity starts at least N gap symbols after the last symbol received in the synchronization signal block of the random access time slot, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access time slot is valid;
  • the network device For time division duplex, if the network device provides the terminal device with a time division duplex uplink and downlink common configuration, and if the first random access opportunity in a random access slot is within a UL symbol, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid.
  • the random access opportunity that meets the first condition includes at least one of the following:
  • the terminal device determines mapping of a synchronization signal block and a random access opportunity based on the downlink information, including at least one of the following:
  • the number of random access opportunities for frequency domain multiplexing of the second random access opportunities in the second random access resource at one time instance is determined according to the downlink information.
  • the processing device provided in the embodiment of the present application has similar implementation principles and beneficial effects to the technical solutions shown in the above-mentioned corresponding method embodiments, and will not be described in detail here.
  • Figure 18 is a second structural diagram of a processing device provided in an embodiment of the present application.
  • the device can be mounted on or is the network device in the above method embodiment.
  • the device 170 includes:
  • the sending module 1701 is used to send downlink information so that the terminal device determines the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • the device also includes: receiving a preamble code according to a mapping of a synchronization signal block and a random access opportunity.
  • the device further comprises at least one of the following:
  • the downlink information includes at least one of a radio resource control message, a media access control message, a system message, and downlink control information;
  • the random access opportunity is the first random access opportunity and/or the second random access opportunity
  • the random access opportunity is a valid random access opportunity.
  • mapping of the synchronization signal block and the random access opportunity includes at least one of the following:
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is exactly the same as the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity;
  • the mapping of the synchronization signal block and the first random access opportunity is independent of the mapping of the synchronization signal block and the second random access opportunity.
  • the method further comprises at least one of the following:
  • the format of the preamble transmitted at the first random access opportunity is the same as the format of the preamble transmitted at the second random access opportunity;
  • the format of the preamble transmitted at the first random access opportunity is independent of the format of the preamble transmitted at the second random access opportunity
  • the first root sequence index used to generate the preamble transmitted at the first random access opportunity is the same as the second root sequence index used to generate the preamble transmitted at the second random access opportunity;
  • the element values in the first root sequence index set used to generate the preamble transmitted at the first random access opportunity are completely different from the element values in the second root sequence index set used to generate the preamble transmitted at the second random access opportunity;
  • the synchronization signal block index mapped to the first random access opportunity is exactly the same as the synchronization signal block index mapped to the second random access opportunity;
  • At least one synchronization signal block index mapped to the first random access opportunity is different from at least one synchronization signal block index mapped to the second random access opportunity.
  • the device further comprises at least one of the following:
  • the first random access opportunity is located in the first random access resource
  • the second random access opportunity is located in the second random access resource
  • the first random access opportunity is applicable to four-step random access and/or two-step random access;
  • the first root sequence index value is the sum of the second root sequence index value and the first value
  • the value of the first root sequence index is related to the format of the preamble code and/or the length of the preamble code
  • Determining the order of mapping synchronization signal blocks and random access opportunities includes:
  • the valid random access opportunity includes at least one of the following:
  • the random access opportunity in a random access slot is valid;
  • the first random access opportunity is valid if the first random access opportunity is not a random access opportunity that satisfies the first condition, the first random access opportunity is valid;
  • the network device For time division duplex, if the network device provides a time division duplex uplink and downlink common configuration to the terminal device, and if the first random access opportunity in a random access slot is not before the synchronization signal block of the random access slot, the first random access opportunity starts at least N gap symbols after the last synchronization signal block symbol of the random access slot and at least N gap symbols after the last downlink symbol of the random access opportunity, and the first random access opportunity is not a random access opportunity that satisfies the first condition, then the first random access opportunity in the random access slot is valid.
  • the terminal device determines mapping of a synchronization signal block and a random access opportunity based on the downlink information, including at least one of the following:
  • the terminal device determines the mapping of the synchronization signal block and the first random access opportunity according to the downlink information
  • the terminal device determines the number of synchronization signal blocks and the index of the synchronization signal block according to the downlink information
  • the terminal device determines the radio frame, subframe and/or time slot position where the first random access opportunity in the first random access resource is located according to the downlink information
  • the terminal device determines, according to the downlink information, a frequency domain starting RB position of a first random access opportunity in the first random access resource on the activation bandwidth;
  • the terminal device determines the radio frame, subframe and time slot position of the second random access opportunity in the second random access resource according to the downlink information
  • the terminal device determines, according to the downlink information, a frequency domain starting RB position of a second random access opportunity in the second random access resource on the activated bandwidth;
  • the terminal device determines the number of random access opportunities for frequency domain multiplexing of the second random access opportunities in the second random access resource at a time instance based on the downlink information.
  • the processing device provided in the embodiment of the present application has similar implementation principles and beneficial effects to the technical solutions shown in the above-mentioned corresponding method embodiments, and will not be described in detail here.
  • the communication device 180 described in this embodiment can be the terminal device (or a component that can be used for the terminal device) or the network device (or a component that can be used for the network device) mentioned in the above method embodiment.
  • the communication device 180 can be used to implement the method corresponding to the terminal device or the network device described in the above method embodiment, and specifically refer to the description in the above method embodiment.
  • the communication device 180 may include one or more processors 1801, which may also be referred to as a processing unit, and may implement certain control or processing functions.
  • the processor 1801 may be a general-purpose processor or a dedicated processor, etc. For example, it may be a baseband processor or a central processing unit.
  • the baseband processor may be used to process the communication protocol and communication data
  • the central processing unit may be used to control the communication device, execute the software program, and process the data of the software program.
  • the processor 1801 may also store instructions 1803 or data (eg, intermediate data).
  • the instructions 1803 may be executed by the processor 1801, so that the communication device 180 executes the method corresponding to the terminal device or network device described in the above method embodiment.
  • the communication device 180 may include a circuit that can implement the functions of sending or receiving or communicating in the aforementioned method embodiments.
  • the communication device 180 may include one or more memories 1802 , on which instructions 1804 may be stored. The instructions may be executed on the processor 1801 , so that the communication device 180 executes the method described in the above method embodiment.
  • data may also be stored in the memory 1802.
  • the processor 1801 and the memory 1802 may be provided separately or integrated together.
  • the communication device 180 may further include a transceiver 1805 and/or an antenna 1806.
  • the processor 1801 may be referred to as a processing unit, and controls the communication device 180 (terminal device or core network device or wireless access network device).
  • the transceiver 1805 may be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc., and is used to implement the transceiver function of the communication device 180.
  • the transceiver 1805 can receive downlink information; and the processor 1801 can determine the mapping of the synchronization signal block and the random access opportunity based on the downlink information.
  • the specific implementation process of the processor 1801 and the transceiver 1805 can refer to the relevant description of the above embodiments, which will not be repeated here.
  • the downlink information can be sent by the transceiver 1805.
  • the specific implementation process of the processor 1801 and the transceiver 1805 can refer to the relevant description of the above embodiments, which will not be repeated here.
  • the processor 1801 and the transceiver 1805 can also be manufactured using various integrated circuit process technologies, such as CMOS (Complementary Metal Oxide Semiconductor), NMOS (NMetal-Oxide-Semiconductor), PMOS (Positive channel Metal Oxide Semiconductor), BJT (Bipolar Junction Transistor), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS Complementary Metal Oxide Semiconductor
  • NMOS NMetal-Oxide-Semiconductor
  • PMOS Positive channel Metal Oxide Semiconductor
  • BJT Bipolar Junction Transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the communication device may be a terminal device (such as a mobile phone) or a network device (such as a base station), which needs to be determined according to the context.
  • the terminal device may be implemented in various forms.
  • the terminal device described in this application may include mobile terminals such as mobile phones, tablet computers, laptop computers, PDAs, portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminal devices such as digital TVs and desktop computers.
  • the communication device is described by taking a terminal device or a network device as an example, the scope of the communication device described in the present application is not limited to the above terminal device or network device, and the structure of the communication device may not be limited by Figure 19.
  • the communication device may be an independent device or may be part of a larger device.
  • An embodiment of the present application also provides a communication device, including a memory and a processor, wherein a processing program is stored in the memory, and when the processing program is executed by the processor, the steps of the processing method in any of the above embodiments are implemented.
  • the communication equipment in this application can be a terminal device (such as a mobile phone) or a network device (such as a satellite).
  • a terminal device such as a mobile phone
  • a network device such as a satellite
  • An embodiment of the present application further provides a computer-readable storage medium, on which a processing program is stored.
  • a processing program is stored on which a processing program is stored.
  • An embodiment of the present application further provides a computer program product, which includes a computer program code.
  • the computer program code runs on a computer, the computer executes the methods in the above various possible implementation modes.
  • An embodiment of the present application also provides a chip, including a memory and a processor, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that a device equipped with the chip executes the methods in various possible implementation modes as described above.
  • the units in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Au moyen de la solution technique de la présente demande, un dispositif terminal détermine le mappage d'un bloc de signal de synchronisation et le mappage d'une occasion d'accès aléatoire sur la base d'informations de liaison descendante, et un mécanisme de mappage pour le bloc de signal de synchronisation et l'occasion d'accès aléatoire est optimisé, de telle sorte qu'un dispositif de réseau peut distinguer efficacement une direction de faisceau utilisée par le dispositif terminal qui effectue un accès aléatoire.
PCT/CN2024/093463 2024-05-15 2024-05-15 Procédé de traitement, dispositif de communication et support de stockage WO2025050700A1 (fr)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109729580A (zh) * 2018-01-12 2019-05-07 华为技术有限公司 通信方法及装置
CN114246015A (zh) * 2019-08-12 2022-03-25 高通股份有限公司 同步信号块对随机接入时机的关联
WO2023185903A1 (fr) * 2022-03-30 2023-10-05 维沃移动通信有限公司 Procédé et appareil de traitement pour opération de couche physique, et terminal
CN117835269A (zh) * 2022-09-30 2024-04-05 华为技术有限公司 随机接入方法、装置及系统

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109729580A (zh) * 2018-01-12 2019-05-07 华为技术有限公司 通信方法及装置
CN114246015A (zh) * 2019-08-12 2022-03-25 高通股份有限公司 同步信号块对随机接入时机的关联
WO2023185903A1 (fr) * 2022-03-30 2023-10-05 维沃移动通信有限公司 Procédé et appareil de traitement pour opération de couche physique, et terminal
CN117835269A (zh) * 2022-09-30 2024-04-05 华为技术有限公司 随机接入方法、装置及系统

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