WO2024083119A1 - Random access method and apparatus, and terminal and network-side device - Google Patents

Abstract

A random access method and apparatus, and a terminal and a network-side device, which belong to the field of communications. The random access method in the embodiments of the present application comprises: a terminal acquiring first configuration information, wherein the first configuration information comprises random access parameters and/or random access resources for a first random access process, which is a random access process involving an energy-limited characteristic; the terminal selecting a first random access parameter and/or a first random access resource according to the energy-limited characteristic and/or the first configuration information; and the terminal executing the first random access process on the basis of the first random access parameter and/or the first random access resource.

Description

Random access method, device, terminal and network side equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese patent application number 202211274588.0 filed in China on October 18, 2022, the entire contents of which are incorporated herein by reference.

Technical Field

The present application belongs to the field of communication technology, and specifically relates to a random access method, apparatus, terminal and network side equipment.

Background technique

The Internet of Everything requires a large number of terminals, including energy-constrained terminals, such as terminals that require energy harvesting (Energy-Harvesting UE, EH-UE). Since such terminals have limited stored power, they need to be charged to a certain level before they can communicate with the base station. However, the communication time is short and cannot meet the needs of long-lasting or frequent communication processes.

During the random access process of the terminal, the terminal may be unable to complete the random access process due to energy limitation.

Summary of the invention

The embodiments of the present application provide a random access method, apparatus, terminal and network-side equipment, which can solve the problem that during the random access process, the terminal may be unable to complete the random access process due to energy limitation.

In a first aspect, a random access method is provided, which is applied to a terminal, and the method includes:

The terminal obtains first configuration information, where the first configuration information includes random access parameters and/or random access resources for a first random access process, where the first random access process is a random access process with energy limited characteristics;

The terminal selects a first random access parameter and/or a first random access resource according to an energy limited characteristic and/or the first configuration information;

The terminal performs the first random access procedure based on the first random access parameter and/or the first random access resource.

In a second aspect, a random access device is provided, including:

A first transmission module, configured to acquire first configuration information, where the first configuration information includes random access parameters and/or random access resources for a first random access process, where the first random access process is a random access process with energy-limited characteristics;

A first execution module, configured to select a first random access parameter and/or a first random access resource according to the energy limited characteristic and/or the first configuration information;

The first transmission module is further used to perform the first random access process based on the first random access parameter and/or the first random access resource.

In a third aspect, a random access method is provided, which is applied to a network side device, and the method includes:

The network side device sends first configuration information to the terminal, where the first configuration information includes random access parameters and/or random access resources for a first random access process, where the first random access process is a random access process with energy limited characteristics;

The network side device receives a random access message of a first random access process based on a first random access parameter and/or a first random access resource from the terminal, where the first random access parameter and/or the first random access resource are selected by the terminal according to energy limited characteristics and/or the first configuration information.

In a fourth aspect, a random access device is provided, including:

The second execution module is used to determine the first configuration information to be sent to the terminal, wherein the first configuration information includes a random access parameter and/or a random access resource of a first random access procedure, wherein the first random access procedure is a random access procedure with energy limited characteristics;

A second transmission module, configured to send the first configuration information to the terminal;

The second transmission module is also used to receive a random access message of a first random access process based on a first random access parameter and/or a first random access resource from the terminal, where the first random access parameter and/or the first random access resource are selected according to energy limited characteristics and/or the first configuration information.

In a fifth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the first aspect are implemented.

In a sixth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the processor is used to select a first random access parameter and/or a first random access resource based on the energy limited characteristics and/or the first configuration information, and the communication interface is used to obtain the first configuration information; and is also used to perform the first random access process based on the first random access parameter and/or the first random access resource.

In the seventh aspect, a network side device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the third aspect are implemented.

In the eighth aspect, a network side device is provided, including a processor and a communication interface, wherein the processor is used to determine first configuration information to be sent to a terminal, and the communication interface is used to send the first configuration information to the terminal; and receive a random access message of a first random access process based on a first random access parameter and/or a first random access resource from the terminal.

In a ninth aspect, a random access system is provided, comprising: a terminal and a network side device, wherein the terminal can be used to execute the steps of the random access method as described in the first aspect, and the network side device can be used to execute the steps of the random access method as described in the third aspect.

In the tenth aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the third aspect are implemented.

In the eleventh aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the third aspect.

In the twelfth aspect, a computer program/program product is provided, wherein the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the random access method as described in the first aspect, or to implement the steps of the random access method as described in the third aspect.

In an embodiment of the present application, by acquiring first configuration information, the first configuration information includes a random access parameter and/or a random access resource for a first random access process, selecting a first random access parameter and/or a first random access resource according to an energy limited characteristic and/or the first configuration information, and performing the first random access process based on the first random access parameter and/or the first random access resource, thereby providing a corresponding random access method for a terminal with an energy limited characteristic, and using different random access parameters and/or random access resources for terminals with different characteristics.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the structure of a wireless communication system applicable to an embodiment of the present application;

FIG2 is a schematic diagram of a random access method according to an embodiment of the present application;

FIG3 is a schematic diagram of the structure of a random access device provided in an embodiment of the present application;

FIG4 is a schematic diagram of a flow chart of another random access method provided in an embodiment of the present application;

FIG5 is a schematic diagram of the structure of another random access device provided in an embodiment of the present application;

FIG6 is a schematic diagram of the structure of a communication device provided in an embodiment of the present application;

FIG7 is a schematic diagram of the structure of a terminal implementing an embodiment of the present application;

FIG8 is a schematic diagram of the structure of a network-side device for implementing an embodiment of the present application.

Detailed ways

The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first" and "second" are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and/or" in the specification and claims represents at least one of the connected objects, and the character "/" generally represents that the objects associated with each other are in an "or" relationship.

It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE)/LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency Division Multiple Access (SC-FDMA) and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the above-mentioned systems and radio technologies as well as for other systems and radio technologies. The following description describes a new radio (NR) system for example purposes, and NR terms are used in most of the following descriptions, but these technologies can also be applied to applications other than NR system applications, such as the ^6th Generation (6G) communication system.

FIG1 shows a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer) or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/virtual reality (virtual reality, VR) device, a robot, a wearable device (Wearable Device), a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (a home appliance with wireless communication function, such as a refrigerator, a TV, a washing machine or furniture, etc.), a game console, a personal computer (personal computer, PC), a teller machine or a self-service machine and other terminal side devices, and the wearable device includes: a smart watch, a smart bracelet, a smart headset, a smart glasses, a smart jewelry (smart bracelet, a smart bracelet, a smart ring, a smart necklace, a smart anklet, a smart anklet, etc.), a smart wristband, a smart clothing, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (RAN), a radio access network function or a radio access network unit. The access network device 12 may include a base station, a WLAN access point or a WiFi node, etc. The base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home B node, a home evolved B node, a transmitting and receiving point (TRP) or other appropriate terms in the field, as long as the same technical effect is achieved, the base station is not limited to a specific technical vocabulary, it should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited. The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized Network Configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (or L-NEF), Binding Support Function (BSF), Application Function (AF), etc. It should be noted that in the embodiment of the present application, only the core network device in the NR system is taken as an example for introduction, and the specific type of the core network device is not limited.

The random access method, apparatus, terminal and network side equipment provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through some embodiments and their application scenarios.

As shown in Figure 2, the embodiment of the present application provides a random access method, in other words, the method can be executed by software or hardware installed in a terminal. The method includes the following steps.

S210. The terminal obtains first configuration information, where the first configuration information includes random access parameters and/or random access resources for a first random access process, and the first random access process is a random access process with energy-limited characteristics.

It should be noted that the first random access process can be a contention-based random access (Contention-based Random Access, CBRA) process or a non-contention random access (Contention-Free RA, CFRA) process.

The contention-based random access process may include a 4-step random access process, including: message 1 (Msg1), message 2 (Msg2), message 3 (Msg3), message 4 (Msg4) and message 5 (Msg5). The non-contention-based random access process may be a 2-step random access process, including: message A (MsgA) and message B (MsgB).

The first configuration information may be obtained in various ways, and may be received from a network side device or agreed upon by a protocol.

In one embodiment, the first configuration information may include one or more sets of random access parameters that can be used to perform the first random access procedure, and each set of random access parameters may correspond to different energy-limited characteristics. The terminal may select a corresponding set of random access parameters from the one or more sets of random access parameters based on the energy-limited characteristics to perform the first random access procedure.

In one implementation, each set of random access parameters may include at least one of the following:

A first time interval is used to indicate the time interval between sending adjacent random access messages in the first random access process, that is, the time interval between two uplink random access messages sent by the terminal. In one embodiment, the terminal may start an interval timer corresponding to the random access message after sending the random access message.

The maximum number of first random access transmissions is the maximum number of random access preambles or message A transmissions before declaring the first random access process failed. For example, for a 4-step random access process, the preamble is sent by Msg1, and the preamble transmission counter can be used to count the number of consecutive transmissions of Msg1; for a 2-step random access process, the preamble is sent by MsgA, and the preamble transmission counter can be used to count the number of consecutive transmissions of MsgA;

Response window (ResponseWindow) information, the response window information is used to indicate the time window size for the terminal to wait for a response message after sending a random access message of the first random access process. In one embodiment, when sending a random access message, the terminal may start a timer corresponding to the response window information, which may be represented as a response window timer (ResponseWindow timer);

The first random access transmission power increase step size is the random access transmission power increase step size of the terminal at During the first random access process, the step size of increasing the transmit power of the preamble code or message A, the terminal may continuously increase the step size of the transmit power of the preamble code or message A through the first random access transmit power increase step size control;

Scaling factor (ScalingFactor), the terminal can reduce or compress the above random access parameters based on the scaling factor, such as reducing the maximum number of preamble code or message A transmissions, reducing the preamble code or message A transmission power boost step, or compressing the time window size for waiting for a response message, etc.;

A first terminal type, the first terminal type is a terminal type corresponding to the random access parameter and/or the random access resource, and the terminal can determine whether the set of random access parameters and/or the set of random access resources can be used to perform the first random access process based on the terminal type. The terminal type can be classified in various ways, for example, it can be classified based on the energy-limited characteristics of the terminal;

A first feature indication (Feature Indication), wherein the first feature indication is used to indicate an energy limited characteristic corresponding to the random access parameter and/or the random access resource, and the terminal may determine whether to use the set of random access parameters and/or the set of random access resources to perform the first random access process based on the energy limited characteristic of the terminal.

In an implementation manner, the random access parameter may also be used to indicate an association relationship between an energy-limited characteristic and a random access resource, and may specifically include at least one of the following:

Physical Random Access Channel (PRACH) resources associated with the energy limited characteristic, e.g., PRACH transmission occasions dedicated to the first random access procedure or a terminal with the energy limited characteristic;

A random access channel preamble (PRACH preamble) associated with the energy limited characteristic, such as a preamble dedicated to the first random access procedure or a terminal with energy limited characteristics;

A logical channel identifier (LCID) associated with the energy limited characteristic, such as the LCID of the common control channel (CCCH) or CCCH 1 dedicated to the first random access procedure or the terminal with energy limited characteristics.

In one embodiment, the first configuration information may include one or more sets of random access resources, each set of random access parameters may correspond to different energy-limited characteristics. The terminal may select a set of random access resources from the one or more sets of random access resources based on the energy-limited characteristics to perform the first random access process.

In one implementation, each set of random access resources includes at least one of the following:

random access resources corresponding to the first terminal type;

a random access resource corresponding to the first characteristic indication;

a random access channel preamble associated with the energy limited characteristic;

random access channel resources associated with the energy limited characteristic;

A logical channel identifier associated with the energy limited characteristic.

In an implementation manner, the energy limited characteristic may be a characteristic supported by the first random access procedure, or may be a characteristic of the terminal.

In one embodiment, the energy limited characteristic may be used to indicate whether the terminal performing the first random access procedure supports energy harvesting or does not support energy harvesting, and/or supports energy storage or does not support energy storage. The terminal may be a terminal without energy storage capability that requires energy harvesting, or the terminal may be a terminal with energy storage capability that requires energy harvesting.

In another embodiment, the energy-limited characteristic may also be used to indicate that energy collection is required during the first random access process, or that energy collection is not required during the first random access process. For example, when the power stored in the terminal is insufficient to execute a complete first random access process, energy collection is required during the first random access process; or when the power stored in the terminal is sufficient to support the execution of a complete first random access process, such as when the power is sufficient, energy collection is not required during the first random access process.

In another embodiment, the energy limited characteristic can also be used to indicate the communication mode of the first random access process, which may include: an intermittent communication mode, or a non-intermittent communication mode. For example, if the intermittent communication mode is adopted in the first random access process, the intermittent period can be used for energy collection.

In another implementation, the energy limited characteristic may also be used to indicate a triggering mode for communication of the terminal during the first random access process, which may include at least one of the following:

The terminal is of a passive type, for example, for a terminal without energy storage capability that requires energy harvesting, its communication process or the first random access process is triggered by a network side device;

The terminal is of a semi-passive type, for example, for a terminal with energy storage capability that requires energy harvesting, its communication process or the first random access process may be triggered by a network-side device or by the terminal;

The terminal is of active type, for example, for a terminal with energy storage capability, its communication process or the first random access process may be triggered by the terminal;

In another implementation, the energy limited characteristic may also be used to indicate other capabilities of the terminal, including at least one of the following:

The terminal requires energy harvesting;

The terminal has no battery;

The power of the terminal is limited;

The terminal is maintenance-free;

The working time length of the terminal is limited.

S220: The terminal selects a first random access parameter and/or a first random access resource according to energy limitation characteristics and/or the first configuration information.

In the case where the first configuration information includes multiple sets of random access parameters and/or multiple sets of random access resources, the terminal may determine the first random access parameter and/or the first random access resource used by the terminal to perform the first random access process according to energy limited characteristics corresponding to the terminal.

S230. The terminal performs the first random access procedure based on the first random access parameter and/or the first random access resource.

The terminal performs information interaction of the first random process with the network side device based on the first random access parameter and/or the first random access resource, and the terminal sends a random access message to the network side device and receives a response message from the network side device.

In one implementation, when the first random access parameter includes a first time interval, when the terminal sends a random access message to the network side device, an interval timer corresponding to the random access message may be started. The terminal may perform energy collection during the period when the interval timer is started to prepare for the next random access message to be sent.

For a 4-step random access process, the first time interval may include the time interval between sending Msg1 and Msg3, the time interval between Msg3 and Msg5, and may also include the time interval between continuously repeating the sending of Msg1 or repeating the sending of Msg3.

For example, in the case where the first time interval includes the time interval between sending Msg1 and Msg3, the terminal starts the interval timer corresponding to Msg1 after sending Msg1. If the terminal successfully receives Msg2, the terminal performs energy collection before the interval timer times out, so as to send Msg3 after the interval timer times out.

For another example, when the first time interval includes a time interval for continuously and repeatedly sending Msg1, the terminal starts the interval timer corresponding to Msg1 after sending Msg1. If the terminal does not receive Msg2 and the timer corresponding to the time window in which the terminal waits for Msg2 times out, the terminal performs energy harvesting before the interval timer times out, so as to send Msg1 again when the interval timer times out.

For a 2-step random access process, the first time interval may include a time interval between consecutively repeated transmissions of MsgA. For example, in the case where the first time interval includes a time interval between consecutively repeated transmissions of MsgA, the terminal starts an interval timer corresponding to MsgA after transmitting MsgA, and if the terminal does not receive MsgB and the time window for the terminal to wait for MsgB times out, the terminal performs energy harvesting before the interval timer times out, so as to transmit MsgA again after the interval timer times out.

In an implementation manner, when the first random access parameter includes response window information, the terminal may start a timer corresponding to the response window information after sending the random access message.

For a 4-step random access process, the response window information may include first response window information, and the first response window information is used to indicate a time window for the terminal to wait for Msg2 after sending Msg1 of the first random access. After sending Msg1, the terminal may start a first response window timer corresponding to the first response window information.

For a 2-step random access process, the response window information may include second response window information, and the second response window information is used to indicate a time window for the terminal to wait for MsgB after sending MsgA of the random access. After sending MsgA, the terminal may start a second response window timer corresponding to the second response window information.

In one embodiment, after receiving the random access message from the terminal, the network side device may identify the energy-limited characteristics of the terminal based on the first random access resource used by the random access message. For example, the terminal is identified as a terminal with energy storage capability that requires energy harvesting, and the terminal needs to harvest energy during the first random access process; or, the terminal is identified as a terminal with energy storage capability that does not require energy harvesting, and the working time length of the terminal is limited, thereby determining that the time length of the first random access process needs to be limited.

In one implementation, the network side device may determine that the terminal is a terminal with energy limited characteristics based on that the first random access resource used by the received random access message is at least one of the following:

a random access resource corresponding to the first characteristic indication;

a random access channel preamble associated with the energy limited characteristic;

random access channel resources associated with the energy limited characteristic;

A logical channel identifier associated with the energy limited characteristic.

In one implementation, the network side device may perform the first random access process of the terminal based on the identified energy-limited characteristic. The network side device may perform some special processing on the first random access process after identifying the energy-limited characteristic of the terminal according to the received random access message. For example, shortening the time length of the random access process or enhancing performance.

In one implementation, the network side device may send a response message to the terminal based on at least one of the following:

Sending the response message within a time window corresponding to the response window information corresponding to the random access message, for example, for a 4-step random access process, the network side device may reply to the terminal with Msg2 within a time range of the first response window information; for a 2-step random access process, the network side device may reply to the terminal with MsgB within a time range of the second response window information;

The response message carries an indication for indicating to the terminal the time of sending the next random access message, so that the terminal can perform energy collection before sending the next random access message; for example, the network side device may indicate to the terminal the time of sending Msg3 through Msg2; and may also indicate to the terminal the time of sending Msg5 through Msg4;

Repeating the sending of the response message, by repeatedly sending Msg2, Msg4 or MsgB, is used to enhance the terminal's reception of the response message.

For different random access processes, the embodiments of the present application provide the following specific implementation methods for illustration.

In one embodiment, for the 4-step random access process, the network side device may receive

Msg1 uses a first random access resource to identify the energy-limited characteristics of the terminal. The first random access process includes:

A1. The terminal sends Msg1 to the network device according to the selection of the first random access resource, where the first random access resource may include a PRACH preamble associated with the energy-limited characteristic and/or a PRACH preamble associated with the energy-limited characteristic. If the first random access parameter includes the first time interval, start the interval timer corresponding to Msg1. If the first random access parameter includes the first response window information, start the first response window timer;

A2. The network side device may identify the energy-limited characteristics of the terminal based on the received Msg1, and send Msg2 to the terminal within the time range of the first response window. The Msg2 may be used to indicate the sending time of Msg3 to the terminal;

A3. After receiving Msg2, the terminal may send Msg3 after the interval timer corresponding to Msg1 expires, or may send Msg3 at the sending time indicated by Msg2.

A4. The network side device replies Msg4 to the terminal. The Msg4 can be used to indicate the sending time of Msg5 to the terminal;

A5. The terminal sends Msg5 to the network side device, such as Radio Resource Control (RRC) connection establishment completion message RRC Connection setup complete.

In another implementation, for the 4-step random access process, the network-side device may identify the energy-limited characteristic of the terminal based on the received Msg3.

In step A3, the terminal may send Msg3 to the network side device using a logical channel associated with the energy limited characteristic.

In step A4, the network side device can identify the energy-limited characteristics of the terminal according to the logical channel used by Msg3, and provide the terminal with a configuration for intermittent communication in Msg4 sent to the terminal, so as to facilitate energy collection by the terminal during communication.

In another embodiment, for the two-step random access process, the network side device may identify the energy-limited characteristics of the terminal based on the first random access resource used by the received MsgA. The first random access process includes:

B1. The terminal sends MsgA to the network side device according to the selection of the first random access resource, where the first random access resource may include PRACH preamble and/or PRACH resource associated with energy-limited characteristics, and may also include a logical channel identifier associated with energy-limited characteristics.

B2. The network side device can identify the energy-limited characteristics of the terminal according to the first random access resource used by MsgA, and send MsgB to the terminal, provide the configuration of interval communication in the MsgB, and use the terminal to collect energy during communication.

It can be seen from the technical solution of the above embodiment that the embodiment of the present application obtains first configuration information, where the first configuration information includes random access parameters and/or random access resources for a first random access process, selects first random access parameters and/or first random access resources according to energy limited characteristics and/or the first configuration information, and performs the first random access process based on the first random access parameters and/or the first random access resources, thereby providing a corresponding random access method for a terminal with energy limited characteristics, and using different random access parameters and/or random access resources for terminals with different characteristics.

Based on the above embodiment, optionally, the first configuration information further includes at least one of the following random access restriction parameters:

A power threshold, which may be expressed as a percentage, such as 20% or 50%;

Working hours length threshold;

Reference Signal Received Power (RSRP) threshold.

In one implementation, the first configuration information may provide one or more sets of random access restriction parameters, which are respectively used to correspond to different random access processes or energy-limited characteristics.

For the power threshold, the random access restriction parameter may include a power threshold corresponding to a 4-step random access process and a power threshold corresponding to a 2-step random access process;

For the working time length threshold, the random access restriction parameter may include a working time length threshold corresponding to a 4-step random access process and a working time length threshold corresponding to a 2-step random access process;

For the reference signal received power threshold, the reference signal received power threshold includes at least one of the following:

a first power threshold, where the first power threshold is used to indicate a reference signal received power threshold that needs to be met to perform the first random access process when the remaining power of the terminal is not greater than the power threshold, or the length of time for which the terminal can work continuously is not greater than a working time length threshold;

A second power threshold, where the second power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 4-step first random access process;

A third power threshold, where the third power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 2-step first random access process;

A fourth power threshold, the fourth power threshold is used to indicate a reference signal receiving power threshold that needs to be met by the terminal to initiate the first random access process at a random access opportunity RO corresponding to a specific synchronization signal block (Synchronization Signal and PBCH block, SSB).

In one implementation, in step S230, the terminal needs to satisfy at least one of the following conditions corresponding to the random access restriction parameter for performing the first random access procedure:

The remaining power of the terminal is greater than or equal to the power threshold, and the terminal is allowed to perform the first random access process when the remaining power is greater than or equal to the power threshold;

The length of time during which the terminal can continuously work is greater than or equal to the working time length threshold, and the terminal is allowed to perform the first random access process when the length of continuous working time currently supported by the terminal is greater than or equal to the working time length threshold;

The strength of the downlink path loss reference signal of the terminal is greater than or equal to the reference signal received power threshold.

When the random access restriction parameter includes a first power threshold, when the remaining power of the terminal is not greater than the power threshold, or when the length of time the terminal can work continuously is not greater than the working time threshold, the terminal is allowed to perform the first random access process when the strength of the downlink path loss reference signal is greater than or equal to the first power threshold.

When the random access restriction parameter includes a second power threshold, the terminal is allowed to perform a four-step first random access process when the strength of the downlink path loss reference signal is greater than or equal to the second power threshold.

When the random access restriction parameter includes a third power threshold, the terminal is allowed to perform a 2-step first random access process when the strength of the downlink path loss reference signal is greater than or equal to the third power threshold.

When the random access restriction parameter includes a fourth power threshold, the terminal is allowed to initiate the first random access process in the RO corresponding to a specific SSB when the strength of the downlink path loss reference signal is greater than or equal to the fourth power threshold.

It can be seen from the technical solution of the above embodiment that the embodiment of the present application indicates the conditions that need to be met for the terminal to perform the first random access process through the random access restriction parameter in the first configuration information, and the first random access process can be performed according to the remaining power or working time of the terminal, thereby reducing the possibility of random access failure.

The random access method provided in the embodiment of the present application may be executed by a random access device. In the embodiment of the present application, the random access device performing the random access method is taken as an example to illustrate the random access device provided in the embodiment of the present application.

As shown in FIG. 3 , the random access device includes: the first transmission module 301 and a first execution module 302 .

The first transmission module 301 is used to obtain first configuration information, the first configuration information including random access parameters and/or random access resources for a first random access process, and the first random access process is a random access process with energy-limited characteristics; the first execution module 302 is used to select first random access parameters and/or first random access resources according to the energy-limited characteristics and/or the first configuration information; the first transmission module 301 is also used to execute the first random access process based on the first random access parameters and/or the first random access resources.

Optionally, the random access parameter includes at least one of the following: a first time interval, the first time interval is used to indicate the time interval for sending adjacent random access messages in the first random access process; a maximum number of first random access transmissions, the maximum number of random access transmissions is performed before declaring the first random access process failed; the maximum number of times a random access preamble or message A is sent; response window information, the response window information is used to indicate the time window size for the terminal to wait for a response message after sending a random access message of a first random access process; a first random access transmit power boost step size, the random access transmit power boost step size is the step size for the terminal to boost the transmit power of the preamble or message A in the first random access process; a scaling factor ScalingFactor; a first terminal type, the first terminal type is a terminal type corresponding to the random access parameter and/or random access resource; a first characteristic indication, the first characteristic indication is used to indicate an energy limited characteristic corresponding to the random access parameter and/or random access resource; a random access channel resource PRACH resource associated with the energy limited characteristic; a random access channel preamble PRACH preamble associated with the energy limited characteristic; a logical channel identifier associated with the energy limited characteristic.

Optionally, the random access resource includes at least one of the following: a random access resource corresponding to the first terminal type; a random access resource corresponding to the first characteristic indication; a random access channel preamble PRACH preamble associated with the energy limited characteristic; a random access channel resource PRACH resource associated with the energy limited characteristic; and a logical channel identifier associated with the energy limited characteristic.

Optionally, the energy-limited characteristic includes at least one of the following: supporting energy harvesting; supporting energy storage; energy harvesting is required during the first random access process; no energy harvesting is required during the first random access process; intermittent communication mode; non-intermittent communication mode; passive type; semi-passive type; active type; energy harvesting is required; no battery; power is limited; maintenance-free; limited working time.

Optionally, when the first random access parameter includes response window information, the first transmission module 301 is used to send a random access message to the network side device and start a timer corresponding to the response window information;

The response window information includes at least one of the following:

First response window information, where the first response window information is used to indicate a time window for waiting for message 2 Msg2 after sending message 1 Msg1 of the random access;

The second response window information is used to indicate the time window for waiting for message B MsgB after sending the random access message A MsgA.

Optionally, the first transmission module 301 is used to:

Sending a random access message to the network side device;

A response message is received from the network side device, where the response message carries an indication of a sending time for sending a next random access message.

It can be seen from the technical solution of the above embodiment that the embodiment of the present application obtains first configuration information, where the first configuration information includes random access parameters and/or random access resources for a first random access process, selects first random access parameters and/or first random access resources according to energy limited characteristics and/or the first configuration information, and performs the first random access process based on the first random access parameters and/or the first random access resources, thereby providing a corresponding random access method for a terminal with energy limited characteristics, and using different random access parameters and/or random access resources for terminals with different characteristics.

Based on the above embodiment, optionally, the first configuration information also includes at least one of the following random access restriction parameters: power threshold; working time length threshold; reference signal receiving power threshold.

Optionally, the terminal needs to meet at least one of the following conditions corresponding to the random access restriction parameter when performing the first random access process:

The remaining power of the terminal is greater than or equal to the power threshold;

The length of time that the terminal can continuously work is greater than or equal to the working time length threshold;

The strength of the downlink path loss reference signal of the terminal is greater than or equal to the reference signal received power threshold.

Optionally, the reference signal received power threshold includes at least one of the following:

The first power threshold is used to indicate that the remaining power of the terminal is not greater than the power threshold, or the length of time that the terminal can work continuously is not greater than the working time threshold. A reference signal received power threshold that needs to be met in the first random access process;

A second power threshold, where the second power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 4-step first random access process;

A third power threshold, where the third power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 2-step first random access process;

A fourth power threshold, the fourth power threshold is used to indicate the reference signal receiving power threshold that needs to be met by the terminal to initiate the first random access process at the random access opportunity RO corresponding to a specific synchronization signal block SSB.

It can be seen from the technical solution of the above embodiment that the embodiment of the present application indicates the conditions that need to be met for the terminal to perform the first random access process through the random access restriction parameter in the first configuration information, and the first random access process can be performed according to the remaining power or working time of the terminal, thereby reducing the possibility of random access failure.

The random access device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. Exemplarily, the terminal may include but is not limited to the types of terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

The random access device provided in the embodiment of the present application can implement each process implemented by the method embodiment of Figure 2 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

As shown in Figure 4, the embodiment of the present application provides a random access method, in other words, the method can be executed by software or hardware installed in a network side device. The method includes the following steps.

S410. The network side device sends first configuration information to the terminal, where the first configuration information includes random access parameters and/or random access resources for a first random access process, and the first random access process is a random access process with energy-limited characteristics.

S420. The network side device receives, from the terminal, a random access message of a first random access process based on a first random access parameter and/or a first random access resource, where the first random access parameter and/or the first random access resource are selected by the terminal according to energy limited characteristics and/or the first configuration information.

Optionally, the random access parameter includes at least one of the following:

a first time interval, where the first time interval is used to indicate a time interval for sending adjacent random access messages in the first random access process;

A maximum number of first random access transmissions, where the maximum number of random access transmissions is the maximum number of times a random access preamble or message A is sent before the first random access process is declared to have failed;

response window information, where the response window information is used to indicate a time window size for the terminal to wait for a response message after sending a random access message of the first random access process;

A first random access transmit power boost step size, where the random access transmit power boost step size is a step size for the terminal to boost the preamble or message A transmit power during the first random access process;

Scaling factor ScalingFactor;

a first terminal type, where the first terminal type is a terminal type corresponding to the random access parameter and/or the random access resource;

a first characteristic indication, where the first characteristic indication is used to indicate an energy limited characteristic corresponding to the random access parameter and/or the random access resource;

A random access channel resource PRACH resource associated with the energy limited characteristic;

A random access channel preamble PRACH preamble associated with the energy limited characteristic;

A logical channel identifier associated with the energy limited characteristic.

Optionally, the random access resource includes at least one of the following: a random access resource corresponding to the first terminal type; a random access resource corresponding to the first characteristic indication; a random access channel preamble PRACH preamble associated with the energy limited characteristic; a random access channel resource PRACH associated with the energy limited characteristic resource; a logical channel identifier associated with the energy limited characteristic.

Optionally, after step S420, the method further includes:

The network side device identifies the energy limited characteristic of the terminal based on the first random access parameter and/or the first random access resource used by the random access message.

Optionally, the energy-limited characteristic includes at least one of the following: the terminal supports energy harvesting; the terminal supports energy storage; energy harvesting is required during the first random access process; no energy harvesting is required during the first random access process; intermittent communication mode; non-intermittent communication mode; the terminal is a passive type; the terminal is a semi-passive type; the terminal is an active type; the terminal requires energy harvesting; the terminal has no battery; the terminal has limited power; the terminal is maintenance-free; the terminal has a limited working time.

Optionally, after the network side device identifies the energy limited characteristic of the terminal, the method further includes:

The network side device sends a response message to the terminal based on at least one of the following:

Sending the response message within a time window corresponding to the response window information corresponding to the random access message;

The response message carries an indication for indicating to the terminal a time for sending a next random access message;

The response message is sent repeatedly.

Optionally, the response window information includes at least one of the following:

First response window information, where the first response window information is used to indicate a time window in which the terminal waits for message 2 Msg2 after sending message 1 Msg1 of the first random access process;

The second response window information is used to indicate the time window in which the terminal waits for message B MsgB after sending message A MsgA of the first random access process.

It can be seen from the technical solutions of the above-mentioned embodiments that the embodiments of the present application send first configuration information to the terminal, wherein the first configuration information includes random access parameters and/or random access resources for a first random access process, and receive a random access message of the first random access process based on the first random access parameters and/or the first random access resources from the terminal, thereby providing a corresponding random access method for a terminal with energy-limited characteristics, and using different random access parameters and/or random access resources for terminals with different characteristics.

Based on the above embodiment, optionally, the first configuration information also includes at least one of the following random access restriction parameters: power threshold; working time length threshold; reference signal receiving power threshold.

Optionally, the random access restriction parameter is used to indicate that the terminal needs to meet at least one of the following conditions to perform the first random access process: the remaining power of the terminal is greater than or equal to the power threshold; the length of time the terminal can work continuously is greater than or equal to the working time length threshold.

The strength of the downlink path loss reference signal of the terminal is greater than or equal to the reference signal received power threshold.

Optionally, the reference signal received power threshold includes at least one of the following:

a first power threshold, where the first power threshold is used to indicate a reference signal received power threshold that needs to be met to perform the first random access process when the remaining power of the terminal is not greater than the power threshold, or the length of time for which the terminal can work continuously is not greater than a working time length threshold;

A second power threshold, where the second power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 4-step first random access process;

A third power threshold, where the third power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 2-step first random access process;

A fourth power threshold, the fourth power threshold is used to indicate the reference signal receiving power threshold that needs to be met by the terminal to initiate the first random access process at the random access opportunity RO corresponding to a specific synchronization signal block SSB.

It can be seen from the technical solution of the above embodiment that the embodiment of the present application indicates the conditions that need to be met for the terminal to perform the first random access process through the random access restriction parameter in the first configuration information, and the first random access process can be performed according to the remaining power or working time of the terminal, thereby reducing the possibility of random access failure.

The random access method provided in the embodiment of the present application may be executed by a random access device. In the embodiment of the present application, the random access device performing the random access method is taken as an example to illustrate the random access device provided in the embodiment of the present application.

As shown in FIG. 5 , the random access apparatus includes: a second transmission module 501 and a second execution module 502 .

The second execution module 502 is used to determine the first configuration information to be sent to the terminal, the first configuration information including random access parameters and/or random access resources for a first random access process, and the first random access process is a random access process with energy limited characteristics; the second transmission module 501 is used to send the first configuration information to the terminal; the second transmission module 501 is also used to receive a random access message of the first random access process based on the first random access parameter and/or the first random access resource from the terminal, and the first random access parameter and/or the first random access resource are selected according to the energy limited characteristics and/or the first configuration information.

Optionally, the random access parameter includes at least one of the following:

a first time interval, where the first time interval is used to indicate a time interval for sending adjacent random access messages in the first random access process;

A maximum number of first random access transmissions, where the maximum number of random access transmissions is the maximum number of times a random access preamble or message A is sent before the first random access process is declared to have failed;

response window information, where the response window information is used to indicate a time window size for the terminal to wait for a response message after sending a random access message of the first random access process;

A first random access transmit power boost step size, where the random access transmit power boost step size is a step size for the terminal to boost the preamble or message A transmit power during the first random access process;

Scaling factor ScalingFactor;

a first terminal type, where the first terminal type is a terminal type corresponding to the random access parameter and/or the random access resource;

a first characteristic indication, where the first characteristic indication is used to indicate an energy limited characteristic corresponding to the random access parameter and/or the random access resource;

A random access channel resource PRACH resource associated with the energy limited characteristic;

A random access channel preamble PRACH preamble associated with the energy limited characteristic;

A logical channel identifier associated with the energy limited characteristic.

Optionally, the random access resource includes at least one of the following: a random access resource corresponding to the first terminal type; a random access resource corresponding to the first characteristic indication; a random access channel preamble PRACH preamble associated with the energy limited characteristic; a random access channel resource PRACH resource associated with the energy limited characteristic; and a logical channel identifier associated with the energy limited characteristic.

Optionally, the second execution module 502 is further configured to identify an energy-limited characteristic of the terminal based on a first random access parameter and/or a first random access resource used by the random access message.

Optionally, it is characterized in that the energy-limited characteristic includes at least one of the following: the terminal supports energy harvesting; the terminal supports energy storage; energy harvesting is required during the first random access process; no energy harvesting is required during the first random access process; intermittent communication mode; non-intermittent communication mode; the terminal is a passive type; the terminal is a semi-passive type; the terminal is an active type; the terminal requires energy harvesting; the terminal has no battery; the terminal has limited power; the terminal is maintenance-free; the terminal has a limited working time.

Optionally, the second transmission module 501 is further configured to send a response message to the terminal based on at least one of the following:

Sending the response message within a time window corresponding to the response window information corresponding to the random access message;

The response message carries an indication for indicating to the terminal a time for sending a next random access message;

The response message is sent repeatedly.

Optionally, the response window information includes at least one of the following:

First response window information, where the first response window information is used to indicate a time window in which the terminal waits for message 2 Msg2 after sending message 1 Msg1 of the first random access process;

The second response window information is used to indicate the time window in which the terminal waits for message B MsgB after sending message A MsgA of the first random access process.

It can be seen from the technical solutions of the above embodiments that the embodiments of the present application send first configuration information to the terminal, where the first configuration information includes random access parameters and/or random access resources for a first random access process, and receive a random access message of the first random access process based on the first random access parameters and/or the first random access resources from the terminal, thereby providing a corresponding random access method for a terminal with energy-limited characteristics, and using different random access parameters and/or random access resources for terminals with different characteristics.

Based on the above embodiment, optionally, the first configuration information also includes at least one of the following random access restriction parameters: power threshold; working time length threshold; reference signal receiving power threshold.

Optionally, the random access restriction parameter is used to indicate that the terminal needs to meet at least one of the following conditions to perform the first random access process:

The remaining power of the terminal is greater than or equal to the power threshold;

The length of time that the terminal can work continuously is greater than or equal to the working time length threshold.

The strength of the downlink path loss reference signal of the terminal is greater than or equal to the reference signal received power threshold.

Optionally, the reference signal received power threshold includes at least one of the following:

a first power threshold, where the first power threshold is used to indicate a reference signal received power threshold that needs to be met to perform the first random access process when the remaining power of the terminal is not greater than the power threshold, or the length of time for which the terminal can work continuously is not greater than a working time length threshold;

A second power threshold, where the second power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 4-step first random access process;

A third power threshold, where the third power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 2-step first random access process;

A fourth power threshold, the fourth power threshold is used to indicate the reference signal receiving power threshold that needs to be met by the terminal to initiate the first random access process at the random access opportunity RO corresponding to a specific synchronization signal block SSB.

It can be seen from the technical solution of the above embodiment that the embodiment of the present application indicates the conditions that need to be met for the terminal to perform the first random access process through the random access restriction parameter in the first configuration information, and the first random access process can be performed according to the remaining power or working time of the terminal, thereby reducing the possibility of random access failure.

The random access device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. Exemplarily, the terminal may include but is not limited to the types of terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

The random access device provided in the embodiment of the present application can implement each process implemented by the method embodiment of Figure 4 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

Optionally, as shown in FIG6 , an embodiment of the present application further provides a communication device 600, including a processor 601 and a memory 602, wherein the memory 602 stores a program or instruction that can be run on the processor 601. For example, when the communication device 600 is a terminal, the program or instruction is executed by the processor 601 to implement the various steps of the above-mentioned random access method embodiment, and can achieve the same technical effect. When the communication device 600 is a network side device, the program or instruction is executed by the processor 601 to implement the various steps of the above-mentioned random access method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

The embodiment of the present application also provides a terminal, including a processor and a communication interface, the processor is used to select a first random access parameter and/or a first random access resource according to the energy limited characteristic and/or the first configuration information, and the communication interface is used to obtain the first configuration information; and is also used to select a first random access parameter and/or a first random access resource based on the first random access parameter and/or the first random access resource. The resource performs the first random access process. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 7 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.

The terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709 and at least some of the components of a processor 710.

Those skilled in the art will appreciate that the terminal 700 may also include a power source (such as a battery) for supplying power to each component, and the power source may be logically connected to the processor 710 through a power management system, so as to implement functions such as managing charging, discharging, and power consumption management through the power management system. The terminal structure shown in FIG7 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.

It should be understood that in the embodiment of the present application, the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042, and the graphics processor 7041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072. The touch panel 7071 is also called a touch screen. The touch panel 7071 may include two parts: a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

In the embodiment of the present application, after receiving downlink data from the network side device, the RF unit 701 can transmit the data to the processor 710 for processing; in addition, the RF unit 701 can send uplink data to the network side device. Generally, the RF unit 701 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

The memory 709 can be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 709 may include a volatile memory or a non-volatile memory, or the memory 709 may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 709 in the embodiment of the present application includes but is not limited to these and any other suitable types of memories.

The processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 710.

Among them, the radio frequency unit 701 is used to obtain first configuration information, where the first configuration information includes random access parameters and/or random access resources for a first random access process, and the first random access process is a random access process with energy-limited characteristics.

The processor 710 is configured to select a first random access parameter and/or a first random access resource according to the energy limited characteristic and/or the first configuration information.

The radio frequency unit 701 is further configured to perform the first random access process based on the first random access parameter and/or the first random access resource.

Optionally, the random access parameter includes at least one of the following:

a first time interval, where the first time interval is used to indicate a time interval for sending adjacent random access messages in the first random access process;

A maximum number of first random access transmissions, where the maximum number of random access transmissions is the maximum number of times a random access preamble or message A is sent before the first random access process is declared to have failed;

Response window information, where the response window information is used to indicate a time window size for the terminal to wait for a response message after sending a random access message of the first random access process;

A first random access transmit power boost step size, where the random access transmit power boost step size is a step size for the terminal to boost the preamble or message A transmit power during the first random access process;

Scaling factor ScalingFactor;

a first terminal type, where the first terminal type is a terminal type corresponding to the random access parameter and/or the random access resource;

a first characteristic indication, where the first characteristic indication is used to indicate an energy limited characteristic corresponding to the random access parameter and/or the random access resource;

A random access channel resource PRACH resource associated with the energy limited characteristic;

A random access channel preamble PRACH preamble associated with the energy limited characteristic;

A logical channel identifier associated with the energy limited characteristic.

Optionally, the random access resource includes at least one of the following:

A random access resource corresponding to the first terminal type;

a random access resource corresponding to the first characteristic indication;

A random access channel preamble PRACH preamble associated with the energy limited characteristic;

A random access channel resource PRACH resource associated with the energy limited characteristic;

A logical channel identifier associated with the energy limited characteristic.

Optionally, the energy-limited characteristic includes at least one of the following: supporting energy harvesting; supporting energy storage; energy harvesting is required during the first random access process; no energy harvesting is required during the first random access process; intermittent communication mode; non-intermittent communication mode; passive type; semi-passive type; active type; energy harvesting is required; no battery; power is limited; maintenance-free; limited working time.

Optionally, when the first random access parameter includes response window information, the radio frequency unit 701 is used to send a random access message to the network side device and start a timer corresponding to the response window information;

The response window information includes at least one of the following:

First response window information, where the first response window information is used to indicate a time window for waiting for message 2 Msg2 after sending message 1 Msg1 of the random access;

The second response window information is used to indicate the time window for waiting for message B MsgB after sending the random access message A MsgA.

Optionally, the radio frequency unit 701 is used to: send a random access message to the network side device; receive a response message from the network side device, and the response message carries an indication of a sending time for sending a next random access message.

The embodiments of the present application provide a corresponding random access method for a terminal with energy-limited characteristics, and use different random access parameters and/or random access resources for terminals with different characteristics.

Based on the above embodiment, optionally, the first configuration information also includes at least one of the following random access restriction parameters: power threshold; working time length threshold; reference signal receiving power threshold.

Optionally, the terminal needs to meet at least one of the following conditions corresponding to the random access restriction parameter to perform the first random access process: the remaining power of the terminal is greater than or equal to the power threshold; the length of time the terminal can work continuously is greater than or equal to the working time length threshold; the strength of the downlink path loss reference signal of the terminal is greater than or equal to the reference signal receiving power threshold.

Optionally, the reference signal received power threshold includes at least one of the following:

a first power threshold, where the first power threshold is used to indicate a reference signal received power threshold that needs to be met to perform the first random access process when the remaining power of the terminal is not greater than the power threshold, or the length of time for which the terminal can work continuously is not greater than a working time length threshold;

A second power threshold, where the second power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 4-step first random access process;

A third power threshold, where the third power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 2-step first random access process;

A fourth power threshold, the fourth power threshold is used to indicate the reference signal receiving power threshold that needs to be met by the terminal to initiate the first random access process at the random access opportunity RO corresponding to a specific synchronization signal block SSB.

The embodiment of the present application can execute the first random access process according to the remaining power or working time of the terminal, thereby reducing the possibility of random access failure.

The embodiment of the present application also provides a network side device, including a processor and a communication interface, the processor is used to determine the first configuration information to be sent to the terminal, and the communication interface is used to send the first configuration information to the terminal; a random access message of a first random access process based on a first random access parameter and/or a first random access resource is received from the terminal. The network side device embodiment corresponds to the above-mentioned network side device method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to the network side device embodiment, and can achieve the same technical effect.

Specifically, the embodiment of the present application also provides a network side device. As shown in Figure 8, the network side device 800 includes: an antenna 81, a radio frequency device 82, a baseband device 83, a processor 84 and a memory 85. The antenna 81 is connected to the radio frequency device 82. In the uplink direction, the radio frequency device 82 receives information through the antenna 81 and sends the received information to the baseband device 83 for processing. In the downlink direction, the baseband device 83 processes the information to be sent and sends it to the radio frequency device 82. The radio frequency device 82 processes the received information and sends it out through the antenna 81.

The method executed by the network-side device in the above embodiment may be implemented in the baseband device 83, which includes a baseband processor.

The baseband device 83 may include, for example, at least one baseband board, on which a plurality of chips are arranged, as shown in FIG8 , wherein one of the chips is, for example, a baseband processor, which is connected to the memory 85 through a bus interface to call a program in the memory 85 and execute the network device operations shown in the above method embodiment.

The network side device may also include a network interface 86, which is, for example, a common public radio interface (CPRI).

Specifically, the network side device 800 of the embodiment of the present invention also includes: instructions or programs stored in the memory 85 and executable on the processor 84. The processor 84 calls the instructions or programs in the memory 85 to execute the methods executed by the modules shown in Figure 5 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, each process of the above-mentioned random access method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.

The present application also provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the random access method. The various processes of the examples can achieve the same technical effect, and to avoid repetition, they will not be repeated here.

It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

The embodiment of the present application further provides a computer program/program product, which is stored in a storage medium, and is executed by at least one processor to implement the various processes of the above-mentioned random access method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

An embodiment of the present application further provides a random access system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the random access method described above, and the network side device can be used to execute the steps of the random access method described above.

It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.

The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims (26)

A random access method, comprising: The terminal obtains first configuration information, where the first configuration information includes random access parameters and/or random access resources for a first random access process, where the first random access process is a random access process with energy limited characteristics; The terminal selects a first random access parameter and/or a first random access resource according to an energy limited characteristic and/or the first configuration information; The terminal performs the first random access procedure based on the first random access parameter and/or the first random access resource. The method according to claim 1, wherein the random access parameter comprises at least one of the following: a first time interval, where the first time interval is used to indicate a time interval for sending adjacent random access messages in the first random access process; A maximum number of first random access transmissions, where the maximum number of random access transmissions is the maximum number of times a random access preamble or message A is sent before the first random access process is declared to have failed; Response window information, where the response window information is used to indicate a time window size for the terminal to wait for a response message after sending a random access message of the first random access process; A first random access transmit power boost step size, where the random access transmit power boost step size is a step size for the terminal to boost the preamble or message A transmit power during the first random access process; Scaling factor ScalingFactor; a first terminal type, where the first terminal type is a terminal type corresponding to the random access parameter and/or the random access resource; a first characteristic indication, where the first characteristic indication is used to indicate an energy limited characteristic corresponding to the random access parameter and/or the random access resource; A random access channel resource PRACH resource associated with the energy limited characteristic; A random access channel preamble PRACH preamble associated with the energy limited characteristic; A logical channel identifier associated with the energy limited characteristic. The method according to claim 1 or 2, wherein the random access resource comprises at least one of the following: A random access resource corresponding to the first terminal type; a random access resource corresponding to the first characteristic indication; A random access channel preamble PRACH preamble associated with the energy limited characteristic; A random access channel resource PRACH resource associated with the energy limited characteristic; A logical channel identifier associated with the energy limited characteristic. The method according to any one of claims 1 to 3, wherein the first configuration information further includes at least one of the following random access restriction parameters: Battery threshold; Working hours length threshold; Reference signal receiving power threshold. The method according to claim 4, wherein the terminal needs to satisfy at least one of the following conditions corresponding to the random access restriction parameter for performing the first random access procedure: The remaining power of the terminal is greater than or equal to the power threshold; The length of time that the terminal can continuously work is greater than or equal to the working time length threshold; The strength of the downlink path loss reference signal of the terminal is greater than or equal to the reference signal received power threshold. The method according to claim 4, wherein the reference signal received power threshold comprises at least one of the following: The first power threshold is used to indicate that the remaining power of the terminal is not greater than the power threshold, or the continuous working time of the terminal is not greater than the working time threshold. A reference signal received power threshold that needs to be met in the first random access process; A second power threshold, where the second power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 4-step first random access process; A third power threshold, where the third power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 2-step first random access process; A fourth power threshold, the fourth power threshold is used to indicate the reference signal receiving power threshold that needs to be met by the terminal to initiate the first random access process at the random access opportunity RO corresponding to a specific synchronization signal block SSB. The method according to claim 1, wherein the energy-limited characteristic comprises at least one of the following: The terminal supports energy harvesting; The terminal supports energy storage; Energy harvesting is required during the first random access process; No energy harvesting is required during the first random access process; Intermittent communication mode; Non-intermittent communication mode; The terminal is of passive type; The terminal is of semi-passive type; The terminal is of active type; The terminal requires energy harvesting; The terminal has no battery; The power of the terminal is limited; The terminal is maintenance-free; The working time length of the terminal is limited. The method according to claim 2, wherein, when the first random access parameter includes response window information, the terminal performing the first random access procedure based on the first random access parameter and/or the first random access resource comprises: The terminal sends a random access message to the network side device, and starts a timer corresponding to the response window information; The response window information includes at least one of the following: First response window information, the first response window information is used to indicate a time window for the terminal to wait for message 2 Msg2 after sending message 1 Msg1 of the random access; The second response window information is used to indicate the time window in which the terminal waits for message B MsgB after sending the random access message A MsgA. The method according to claim 1, wherein the terminal performs the first random access procedure based on the first random access parameter and/or the first random access resource comprises: The terminal sends a random access message to the network side device; The terminal receives a response message from the network side device, where the response message carries an indication for indicating to the terminal a sending time of a next random access message. A random access device, comprising: A first transmission module, configured to acquire first configuration information, where the first configuration information includes random access parameters and/or random access resources for a first random access process, where the first random access process is a random access process with energy-limited characteristics; A first execution module, configured to select a first random access parameter and/or a first random access resource according to the energy limited characteristic and/or the first configuration information; The first transmission module is further used to perform the first random access process based on the first random access parameter and/or the first random access resource. A random access method, comprising: The network side device sends first configuration information to the terminal, where the first configuration information includes random access parameters and/or random access resources for a first random access process, where the first random access process is a random access process with energy limited characteristics; The network side device receives a random access message of a first random access process based on a first random access parameter and/or a first random access resource from the terminal, where the first random access parameter and/or the first random access resource are selected by the terminal according to energy limited characteristics and/or the first configuration information. The method according to claim 11, wherein the random access parameter comprises at least one of the following: a first time interval, where the first time interval is used to indicate a time interval for sending adjacent random access messages in the first random access process; A maximum number of first random access transmissions, where the maximum number of random access transmissions is the maximum number of times a random access preamble or message A is sent before the first random access process is declared to have failed; response window information, where the response window information is used to indicate a time window size for the terminal to wait for a response message after sending a random access message of the first random access process; A first random access transmit power boost step size, where the random access transmit power boost step size is a step size for the terminal to boost the preamble or message A transmit power during the first random access process; Scaling factor ScalingFactor; a first terminal type, where the first terminal type is a terminal type corresponding to the random access parameter and/or the random access resource; a first characteristic indication, where the first characteristic indication is used to indicate an energy limited characteristic corresponding to the random access parameter and/or the random access resource; A random access channel resource PRACH resource associated with the energy limited characteristic; A random access channel preamble PRACH preamble associated with the energy limited characteristic; A logical channel identifier associated with the energy limited characteristic. The method according to claim 11 or 12, wherein the random access resource comprises at least one of the following: A random access resource corresponding to the first terminal type; a random access resource corresponding to the first characteristic indication; A random access channel preamble PRACH preamble associated with the energy limited characteristic; A random access channel resource PRACH resource associated with the energy limited characteristic; A logical channel identifier associated with the energy limited characteristic. The method according to claim 11, wherein the first configuration information further includes at least one of the following random access restriction parameters: Battery threshold; Working hours length threshold; Reference signal receiving power threshold. The method according to claim 14, wherein the random access restriction parameter is used to indicate that the terminal needs to meet at least one of the following conditions for performing the first random access procedure: The remaining power of the terminal is greater than or equal to the power threshold; The length of time that the terminal can continuously work is greater than or equal to the working time length threshold; The strength of the downlink path loss reference signal of the terminal is greater than or equal to the reference signal received power threshold. The method according to claim 14, wherein the reference signal received power threshold comprises at least one of the following: The first power threshold is used to indicate that the remaining power of the terminal is not greater than the power threshold, or the continuous working time of the terminal is not greater than the working time threshold. A reference signal received power threshold that needs to be met in the first random access process; A second power threshold, where the second power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 4-step first random access process; A third power threshold, where the third power threshold is used to indicate a reference signal received power threshold that needs to be met by the terminal to initiate a 2-step first random access process; A fourth power threshold, the fourth power threshold is used to indicate the reference signal receiving power threshold that needs to be met by the terminal to initiate the first random access process at the random access opportunity RO corresponding to a specific synchronization signal block SSB. The method according to claim 11, wherein after the network side device receives a random access message from the terminal, the method further comprises: The network side device identifies the energy limited characteristic of the terminal based on the first random access parameter and/or the first random access resource used by the random access message. The method according to claim 11 or 17, wherein the energy-limited characteristic comprises at least one of the following: The terminal supports energy harvesting; The terminal supports energy storage; Energy harvesting is required during the first random access process; No energy harvesting is required during the first random access process; Intermittent communication mode; Non-intermittent communication mode; The terminal is of passive type; The terminal is of semi-passive type; The terminal is of active type; The terminal requires energy harvesting; The terminal has no battery; The power of the terminal is limited; The terminal is maintenance-free; The working time length of the terminal is limited. The method according to claim 17, wherein after the network side device identifies the energy limited characteristic of the terminal, the method further comprises: The network side device sends a response message to the terminal based on at least one of the following: Sending the response message within a time window corresponding to the response window information corresponding to the random access message; The response message carries an indication for indicating to the terminal a time for sending a next random access message; The response message is sent repeatedly. The method according to claim 12 or 19, wherein the response window information includes at least one of the following: First response window information, where the first response window information is used to indicate a time window for the terminal to wait for message 2 Msg2 after sending message 1 Msg1 of the first random access process; The second response window information is used to indicate the time window in which the terminal waits for message B MsgB after sending message A MsgA of the first random access process. A random access device, comprising: A second execution module, configured to determine first configuration information to be sent to the terminal, where the first configuration information includes random access parameters and/or random access resources for a first random access process, where the first random access process is a random access process with an energy-limited characteristic; A second transmission module, configured to send the first configuration information to the terminal; The second transmission module is also used to receive a random access message of a first random access process based on a first random access parameter and/or a first random access resource from the terminal, where the first random access parameter and/or the first random access resource are selected by the terminal according to energy-limited characteristics and/or the first configuration information. A terminal comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the random access method according to any one of claims 1 to 9 are implemented. A network side device comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the random access method as described in any one of claims 11 to 20 are implemented. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the random access method according to any one of claims 1 to 9, or implements the steps of the random access method according to any one of claims 11 to 20. A computer program product, wherein the computer program product is stored in a storage medium, and the computer program product is executed by at least one processor to implement the random access method according to any one of claims 1 to 9, or to implement the random access method according to any one of claims 11 to 20. A chip, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or an instruction to implement the random access method as described in any one of claims 1 to 9, or to implement the random access method as described in any one of claims 11 to 20.