CN110972238B

CN110972238B - A communication method and device

Info

Publication number: CN110972238B
Application number: CN201811141710.0A
Authority: CN
Inventors: 刘建琴; 朱俊; 周永行
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2021-06-22
Anticipated expiration: 2038-09-28
Also published as: WO2020063684A1; CN110972238A

Abstract

The present application discloses a communication method and device. The method includes: a terminal receives first indication information from a network device; wherein the first indication information is used to indicate a data channel of the first system information and a data channel of the first system information. A mapping pattern between at least one of the control channels and the first common signal, the mapping pattern being related to at least one of a first subcarrier interval or a second subcarrier interval, the first subcarrier interval being the first subcarrier interval A subcarrier interval of a control channel of system information, the second subcarrier interval is a subcarrier interval of the first common signal; the terminal receives the first system information according to the first indication information. Using the method and device of the present application, the mapping pattern between the data channel of the first system information, the control channel of the first system information and the first common signal can be defined, and the network device can indicate the mapping pattern to the terminal.

Description

Communication method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a communication method and apparatus.

Background

In a New Radio (NR) licensed band, three mapping patterns are defined for defining a time-frequency resource multiplexing condition between a data channel of first system information, a control channel of the first system information, and a first common signal. In unlicensed bands, regulations require that the signaling bandwidth of a communication device on the unlicensed spectrum occupy at least 80% of the entire system bandwidth or the entire available channel bandwidth. If the mapping pattern in the licensed band is directly reused, the situation that the requirements of the unlicensed band regulation cannot be met may occur. In the prior art, there is no relevant solution how to define a mapping pattern between a data channel of first system information, a control channel of the first system information, and a first common signal in an unlicensed frequency band, and how to indicate the mapping pattern to a terminal by a network device.

Disclosure of Invention

In a first aspect, the present application discloses a communication method, including: the terminal receives first indication information from the network equipment; wherein the first indication information is used to indicate a mapping pattern between a first common signal and at least one of a data channel of first system information and a control channel of first system information, the mapping pattern being related to at least one of a first subcarrier spacing or a second subcarrier spacing, the first subcarrier spacing being a subcarrier spacing of the control channel of the first system information, the second subcarrier spacing being a subcarrier spacing of the first common signal; and the terminal receives the first system information according to the first indication information.

As can be seen from the above, in the embodiment of the present application, the network device may determine a mapping pattern between at least one of a data channel of the first system information and a control channel of the first system information, and the first common signal, and indicate the mapping pattern to the terminal, so that the workload of the terminal may be reduced and the power consumption of the terminal may be reduced compared with the case where the terminal determines the mapping pattern by itself.

In one possible implementation, the first subcarrier spacing or the second subcarrier spacing is any one of 15kHz, 30kHz, and 60kHz, and when the first subcarrier spacing is 15kHz or 30kHz and the second subcarrier spacing is 15kHz or 30kHz, the mapping pattern is a first mapping pattern; the mapping pattern is a second mapping pattern when the first subcarrier spacing or the second subcarrier spacing is 60 kHz.

In one possible implementation manner, the data channel of the first system information and the control channel of the first system information in the first mapping pattern are frequency division multiplexed, the control channel of the first system information is time division multiplexed with the first common signal, and the data channel of the first system information is time division multiplexed with the first common signal.

In the embodiment of the present application, the first mapping pattern may be applied to a case where the first subcarrier spacing of the first common signal is small (for example, the first subcarrier spacing may be 15kHz or 30 kHz). In practical application, the smaller the first subcarrier spacing value of the first common signal is, the smaller the bandwidth occupied by the first common signal is. In the first mapping pattern, the first common signal may be repeated multiple times on different frequencies of the same time unit, and the first common signal may be repeated multiple times on the same time unit occupied by the first common signal, so that the first common signal transmitted on the time unit may meet the regulatory requirement of the unlicensed frequency band.

In a possible implementation manner, the control channel of the first system information, the data channel of the first system information, and the first common signal in the first mapping pattern are frequency division multiplexed.

In the first mapping pattern of the embodiment of the present application, the first common signal, the control channel of the first system information, and the data channel of the first system information are frequency division multiplexed on the same time unit, so that a situation that the first common signal is transmitted separately on the time unit and cannot meet the regulatory requirement of the unlicensed frequency band can be avoided.

In a possible implementation manner, the control channel of the first system information and the data channel of the first system information in the first mapping pattern or the second mapping pattern occupy the same frequency domain resources and orthogonal time domain resources, the time domain resources occupied by the first common signal are the same as the time domain resources jointly occupied by the control channel of the first system information and the data channel, and the frequency domain resources occupied by the first common signal are orthogonal to the frequency domain resources occupied by the control channel of the first system information.

In the embodiment of the present application, the first common signal is frequency division multiplexed with the control channel of the first system information, and the first common signal is frequency division multiplexed with the data channel of the first system information, so that a situation that the first common signal is separately transmitted on a time unit can be avoided, and regulatory requirements of an unlicensed frequency band can be satisfied no matter the subcarrier interval of the first common signal is large or small.

In a possible implementation manner, the control channel of the first system information, the data channel of the first system information, and the first common signal in the second mapping pattern are time-division multiplexed.

In the embodiment of the present application, the first common signal is repeatedly transmitted on different frequency domain resources within the same time unit occupied by the first common signal for multiple times, so that the regulatory requirements of the unlicensed frequency band can be satisfied no matter whether the interval of the first subcarriers corresponding to the first common signal is large or small.

In a possible implementation manner, the control channel of the first system information is frequency division multiplexed with the first common signal in the second mapping pattern, the data channel of the first system information is time division multiplexed with the control channel of the first system information, and the first common signal is time division multiplexed with the data channel of the first system information.

In the embodiment of the present application, the first common signal and the control channel of the first system information are frequency division multiplexed on the same time unit, so that the regulatory requirement of the unlicensed frequency band can be satisfied no matter the size of the first subcarrier interval corresponding to the first common signal is large or small.

In one possible implementation, when the control channel of the first system information is frequency division multiplexed with the data channel of the first system information, the bandwidth of the data channel of the first system information is equal to a first known bandwidth minus the bandwidth of the control channel of the first system information; when the control channel of the first system information, the data channel of the first system information, and the first common signal are frequency division multiplexed, the bandwidth of the data channel of the first system information is equal to a first known bandwidth minus the bandwidth of the control channel of the first system information and the bandwidth of the first common signal.

In a possible implementation manner, when the first common signal is time division multiplexed with the data channel of the first system information, the time domain resource occupied by the data channel of the first system information is an orthogonal frequency division multiplexing OFDM symbol between two time domain adjacent first common signals.

In one possible implementation, the method further includes: and the terminal determines a repeated mapping pattern of the first common signal according to the second subcarrier interval of the first common signal.

In one possible implementation, the method further includes: the terminal receives second indication information from the network equipment; and the terminal determines a repeated mapping pattern of the first public signal according to the second indication information.

In one possible implementation, the method further includes: when at least two first common signals are included in the repeated mapping pattern of the first common signal, the terminal determines one first common signal of the at least two first common signals as a reference first common signal; and the terminal receives the control channel of the first system information according to the reference first common signal.

In one possible implementation manner, the determining, by the terminal, one of the at least two first common signals as a reference first common signal includes: the terminal receives third indication information from the network equipment, wherein the third indication information is used for indicating the reference first public signal; and the terminal determines the reference first common signal in the at least two first common signals according to the third indication information.

In a possible implementation manner, the first indication information further includes indication information of the reference first common signal; the terminal determines one first common signal of the at least two first common signals as a reference common signal, and includes: and the terminal determines the reference first common signal in the at least two first common signals according to the indication information of the reference first common signal included in the first indication information.

In a second aspect, the present application discloses a communication method, comprising: the network equipment generates first indication information; wherein the first indication information is used to indicate a mapping pattern between a first common signal and at least one of a data channel of first system information and a control channel of first system information, the mapping pattern being related to at least one of a first subcarrier spacing or a second subcarrier spacing, the first subcarrier spacing being a subcarrier spacing of the control channel of the first system information, the second subcarrier spacing being a subcarrier spacing of the first common signal; and the network equipment sends the first indication information to the terminal.

In one possible implementation, the method further includes: and the network equipment sends second indication information to the terminal, wherein the second indication information is used for indicating the repeated mapping pattern of the first public signal.

In one possible implementation, if the repeating pattern of the first common signal includes at least two of the first common signals, the method further includes: and the network equipment sends third indication information to the terminal, wherein the third indication information is used for indicating that one first public signal in the at least two first public signals is a reference first public signal.

In a possible implementation manner, if the repeating pattern of the first common signal includes at least two first common signals, the first indication information further includes indication information of a reference common signal, and the reference common signal is one first common signal of the at least two first common signals.

In one possible implementation, the first subcarrier spacing or the second subcarrier spacing is any one of 15kHz, 30kHz, 60 kHz.

In one possible implementation, when the first subcarrier spacing is 15kHz or 30kHz and the second subcarrier spacing is 15kHz or 30kHz, the mapping pattern is a first mapping pattern; the mapping pattern is a second mapping pattern when the first subcarrier spacing or the second subcarrier spacing is 60 kHz.

With reference to the method of the first aspect or the second aspect, in a possible implementation manner, a control channel of the first system information, a data channel of the first system information, and the first common signal in the first mapping pattern are frequency division multiplexed.

In a third aspect, the present application provides a communication device for a terminal or a chip of the terminal, comprising: means or units (means) for performing the steps of the first aspect above.

In a fourth aspect, the present application provides a communication apparatus for a network device or a chip of the network device, including: means for performing the steps of the second aspect above.

In a fifth aspect, the present application provides a communication device, for a terminal or a chip of a terminal, comprising at least one processing element and at least one memory element, wherein the at least one memory element is configured to store a program and data, and the at least one processing element is configured to perform the method provided by the first aspect of the present application.

In a sixth aspect, the present application provides a communication apparatus for a network device or a chip of a network device, comprising at least one processing element and at least one memory element, wherein the at least one memory element is configured to store a program and data, and the at least one processing element is configured to execute the method provided in the second aspect of the present application.

In a seventh aspect, the present application provides a communication device for a terminal comprising at least one processing element (or chip) for performing the method of the first aspect above.

In an eighth aspect, the present application provides a communication apparatus for a network device, comprising at least one processing element (or chip) for performing the method of the second aspect above.

In a ninth aspect, the present application provides a computer program product comprising computer instructions which, when executed by a computer, cause the computer to perform the method of any of the above aspects.

In a tenth aspect, the present application provides a computer readable storage medium having stored thereon computer instructions which, when executed by a computer, cause the computer to perform the method of any of the above aspects.

Drawings

Fig. 1 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic diagram of a mapping pattern provided in an embodiment of the present application;

fig. 3 is a flowchart of a communication method according to an embodiment of the present application;

fig. 4a is a schematic diagram of a mapping pattern provided in an embodiment of the present application;

fig. 4b is a schematic diagram of a mapping pattern provided in the present embodiment;

fig. 5a is a schematic diagram of a mapping pattern provided in an embodiment of the present application;

fig. 5b is a schematic diagram of a mapping pattern provided in the present embodiment;

fig. 6a is a schematic diagram of a mapping pattern provided in an embodiment of the present application;

fig. 6b is a schematic diagram of a mapping pattern provided in the present embodiment;

fig. 7a is a schematic diagram of a mapping pattern provided in an embodiment of the present application;

fig. 7b is a schematic diagram of a mapping pattern provided in the present embodiment;

fig. 8a is a schematic diagram of a mapping pattern provided in an embodiment of the present application;

fig. 8b is a schematic diagram of a mapping pattern provided in the present embodiment;

fig. 9 is a structural example of a communication device provided in an embodiment of the present application;

fig. 10 is another exemplary structure of a communication apparatus according to an embodiment of the present application;

fig. 11 is a structural example of a base station according to an embodiment of the present application;

fig. 12 is a structural example of a terminal according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will be described below with reference to the accompanying drawings.

As shown in fig. 1, an embodiment of the present application provides a communication system 100, and the communication system 100 may include a network device 101 and a terminal 102.

The communication system 100 may employ various Radio Access Technologies (RATs), 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), etc., and the RAT employed in the communication system is not limited in this application. In this application, the term "system" may be used interchangeably with "network".

The network device 101 may be a device in a network that accesses a terminal to the wireless network. The network device is a node in a radio access network, which may also be referred to as a base station, and may also be referred to as a Radio Access Network (RAN) node (or device). Currently, some examples of network devices are: a gNB, a Transmission Reception Point (TRP), an evolved Node B (eNB), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a WiFi Access Point (AP), etc. In addition, in a network structure, the network device may include a Centralized Unit (CU) node and a Distributed Unit (DU) node. The structure separates the protocol layers of the eNB in a Long Term Evolution (LTE) system, the functions of part of the protocol layers are controlled in the CU in a centralized way, the functions of the rest part or all of the protocol layers are distributed in the DU, and the CU controls the DU in a centralized way.

A terminal 102, also referred to as a terminal device, a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user, such as a handheld device with a wireless connection function, a vehicle-mounted device, etc. Currently, some examples of terminals are: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (smart security), a wireless terminal in city (smart city), a wireless terminal in home (smart home), and the like.

In the embodiment of the present application, the network device 101 and the terminal 102 may operate in a licensed frequency band and may also operate in an unlicensed frequency band. For example, sub 1G, 5.1-5.8G, 5.9-6.4G,7.1G,45GHz, 57-64G,71GHz and industrial scientific & medical (ISM) bands are allocated to unlicensed bands, and bands used by the 4G LTE system are licensed bands. The ISM band may specifically refer to free/unlicensed spectrum resources that are commonly allocated for industry, science, and medicine and are universal in the world.

In this embodiment of the present application, when the network device 101 and the terminal 102 operate in the licensed frequency band, as shown in fig. 2, three mapping patterns are defined for defining a time-frequency resource multiplexing condition between a data channel of the first system information, a control channel of the first system information, and the first common signal. It is to be understood that the terms "first," "second," and the like in the description of the present application are used for descriptive purposes only and not for purposes of indicating or implying relative importance, nor for purposes of indicating or implying order.

In the embodiment of the present application, as shown in fig. 2, three mapping patterns (multiplexing patterns) may be respectively defined as mapping pattern 1, mapping pattern 2, and mapping pattern 3. In the mapping pattern 1, the first common signal, the control channel of the first system information, and the data channel of the first system information may be time-division multiplexed. In mapping pattern 2, the control channel of the first system information and the data channel of the first system information are time division multiplexed, and the first common signal and the data channel of the first system information are frequency division multiplexed. In the mapping pattern 3, the control channel of the first system information and the data channel of the first system information are time division multiplexed, the frequency domain resources occupied by the control channel of the first system information and the data channel of the first system information are the same, the first common signal and the control channel of the first system information are frequency division multiplexed within a time unit occupied by the control channel of the first system information, and the first common signal and the data channel of the first system information are frequency division multiplexed within a time unit occupied by the data channel of the first system information.

In the embodiment of the present application, the frequency division multiplexing may refer to that time domain resources occupied by multiple channels are the same, and frequency domain resources are orthogonal or non-overlapping. The mapping sequence of the multiple channels of the frequency division multiplexing on different frequency domain resources of the same time domain resource is not limited, that is, the multiple channels can be mapped in any sequence within the range of frequency domain resources from low to high, as long as the orthogonal or non-overlapping of the frequency domain resources is satisfied.

Time division multiplexing may refer to that time domain resources occupied by multiple channels are orthogonal or non-overlapping, while frequency domain resources occupied by multiple channels may be the same or different.

Since in the unlicensed band, regulations require that the signal transmission bandwidth of the network device or the terminal on the unlicensed spectrum occupies at least 80% of the entire system bandwidth or the entire available channel bandwidth, if the mapping pattern shown in fig. 2 described above in the licensed band is directly reused in the unlicensed band, a situation may occur in which the requirements of the unlicensed band regulations cannot be met.

Based on the above, an embodiment of the present application provides a communication method, which may configure at least one mapping pattern according to at least one of a subcarrier interval of a control channel of first system information and a subcarrier interval of a first common signal, where the mapping pattern may meet regulatory requirements of an unlicensed frequency band. When the network device and the terminal communicate on the unlicensed frequency band, the network device may indicate the mapping pattern to the terminal in a manner of indicating information, and the terminal may receive the first system information according to the indicated mapping pattern.

As shown in fig. 3, an embodiment of the present application provides a communication method, where a network device in the communication method may be specifically the network device 101 in fig. 1, and a terminal may be specifically the terminal 102 in fig. 1. It is understood that, in the embodiment of the present application, the functions of the network device may also be implemented by a chip applied to the network device, and the functions of the terminal may also be implemented by a chip applied to the terminal. The process specifically comprises the following steps:

s301: the network device generates first indication information.

In the embodiment of the present application, the network device may obtain a subcarrier spacing of a control channel of the first system information and a subcarrier spacing of the first common signal. For convenience of description, a subcarrier spacing of the control channel of the first system information may be referred to as a first subcarrier spacing, and a subcarrier spacing of the first common signal may be referred to as a second subcarrier spacing. The network device obtains a mapping pattern, which may relate to at least one of the first subcarrier spacing or the second subcarrier spacing. It is understood that in the embodiments of the present application, at least one of a or b may be represented as: a, b, a and b, a can be single or multiple, b can be single or multiple. Finally, the network device sends first indication information, where the first indication information is used to indicate the mapping pattern, and the mapping pattern may be a mapping pattern between at least one of a data channel of the first system information and a control channel of the first system information and the first common signal.

In this embodiment of the application, the first common signal may be a synchronization signal/physical broadcast channel Block (SS/PBCH Block), the first common signal may also be other signals except for the SS/PBCH Block, and the first common signal may also be a common name of the SS/PBCH Block and other signals, for example, the first common signal may be a common name of the SS/PBCH Block and a channel state information-reference signal (CSI-RS), and the like, which is not specifically limited herein. The first system information may be at least one of Remaining Minimum System Information (RMSI), Other System Information (OSI), paging (paging) information, and Random Access Response (RAR).

S302: the network device transmits the first indication information.

S303: and the terminal receives the first system information according to the first indication information.

In an embodiment of the application, a time-frequency resource location for transmitting the first common signal is available. In this embodiment, the terminal may determine, according to the first indication information, a mapping pattern between at least one of a control channel of the first system information and a data channel of the first system information and the first common signal. Furthermore, the terminal may determine the time-frequency resource for transmitting the first system information control channel and/or the time-frequency resource for transmitting the first system information data channel according to the time-frequency resource location of the first common signal and the mapping pattern. The control channel of the first system information is used for transmitting control information or scheduling information of the first system information, the data channel of the first system information is used for transmitting the first system information, and finally, the terminal can receive the first system information according to the control channel of the first system information and/or the data channel of the first system information.

Specifically, in this embodiment of the present application, the first indication information may be carried in different messages and sent to the terminal. For example, the first indication information may be carried in at least one of a physical broadcast channel, system information, Radio Resource Control (RRC) signaling, or a physical downlink control channel, and notified to the terminal. In an example of the present application, if the mapping pattern is a mapping pattern between a control channel of first system information and a first common signal, a time-frequency resource location of the control channel of the first system information may be determined according to the mapping pattern and the time-frequency resource location of the first common signal, and the terminal may receive the control channel of the first system information at the determined time-frequency resource location, and may determine a time-frequency resource location of a data channel of the first system information according to the control information carried by the control channel, and may finally receive the first system information at the determined time-frequency resource location.

In another example of the present application, if the mapping pattern is a mapping pattern between a data channel of first system information and a first common signal, or the mapping pattern is a mapping pattern between a data channel of a first system channel, a control channel of first system information, and a first common signal, the terminal may determine a time-frequency resource location of a data channel of first system information according to the mapping pattern and a time-frequency resource location of the first common signal. And finally, receiving the first system information at the corresponding time frequency resource position.

In the embodiment of the present application, the first subcarrier spacing or the second subcarrier spacing may be any one of 15kHz, 30kHz, and 60 kHz. The mapping pattern is associated with at least one of a first subcarrier spacing or a second subcarrier spacing. Where "correlated" means that the mapping pattern may be selected according to one or both of the first subcarrier spacing or the second subcarrier spacing.

It should be understood that, in the embodiment of the present application, the first subcarrier spacing or the second subcarrier spacing may also be other subcarrier spacing values than 15kHz, 30kHz, and 60kHz, for example, 120kHz,240kHz, and the like, which is not limited herein.

For example, in the embodiment of the present application, when the first subcarrier spacing is 15kHz or 30kHz and the second subcarrier spacing is 15kHz or 30kHz, the mapping pattern may be a first mapping pattern;

in the embodiment of the present application, the first subcarrier spacing may be 15kHz or 30kHz, and the second subcarrier spacing is 15kHz or 30kHz, which may be embodied in the following forms: { first subcarrier spacing, second subcarrier spacing } ═ {15kHz, 15kHz }, {15kHz, 30kHz }, {30kHz, 15kHz }, and {30kHz, 30kHz }.

In an example of the present application, as shown in fig. 4a, the first mapping pattern may be frequency division multiplexing of a data channel of first system information and a control channel of the first system information, and the control channel of the first system information is time division multiplexing with the first common signal, and the data channel of the first system information is time division multiplexing with the first common signal. It should be noted that, in the mapping pattern shown in fig. 4a, the first common signal is repeatedly transmitted multiple times on different frequency domain resources within the same time unit occupied by the first common signal, where the number of the repeatedly transmitted first common signals is 2, which is merely an exemplary illustration and is not a limitation to the present application. It should be understood that, in the first mapping pattern, the relative positions between the control channel of the first system information, the data channel of the first system information, and the first common signal may be in the order shown in fig. 4a, or may be in other orders, for example, the signal mapping order from the morning to the evening according to the time domain resource may also be the control channel of the first system information (the data channel of the first system information), the first common signal, or may be the first common signal, the control channel of the first system information (the data channel of the first system information), and so on. Similarly, the relative positions of the control channel of the first system information and the data channel of the first system information may be in the order shown in fig. 4a, or in other orders. For example, the signal mapping order from low to high according to the frequency domain resource may be a data channel of the first system information, a control channel of the first system information, or may be a control channel of the first system information, a data channel of the first system information, and the like, which is not limited herein.

It can be seen that the mapping pattern shown in fig. 4a is suitable for the case where the first subcarrier spacing of the first common signal is small (for example, the first subcarrier spacing may be 15kHz or 30 kHz). In practical application, the smaller the first subcarrier spacing value of the first common signal is, the smaller the bandwidth occupied by the first common signal is. Through the mapping pattern shown in fig. 4a, it can be seen that the first common signal is repeated for a plurality of times in the same time unit occupied by the first common signal, so that the first common signal transmitted in the time unit can meet the regulatory requirement. For example, when the first subcarrier spacing is 15kHz, the signal bandwidth occupied by one first common signal is 3.6 MHz. 20M is used as the minimum access bandwidth of the unlicensed frequency band, and if the regulatory requirement of occupying 80% of the whole system bandwidth is to be met, the first common signal occupies at least 16 MHz. In the mapping pattern shown in fig. 4a, the first common signal may be designed to be repeated 5 times on different frequency domain resources of the same time unit, so as to occupy at least 18MHz of channel bandwidth, i.e. meet the regulatory requirement.

In this embodiment, when the first common signal is SS/PBCH Block and the first system information is RMSI, the mapping pattern shown in fig. 4a may be specifically shown in fig. 4 b. In the example shown in fig. 4b, the control channel of the RMSI is denoted by a RMSI control resource set (CORESET), and the data channel of the RMSI is denoted by the RMSI.

In another example of the present application, as shown in fig. 5a, the first mapping pattern may be frequency division multiplexing among a control channel of the first system information, a data channel of the first system information, and the first common signal. It should be understood that, in the first mapping pattern, the relative positions between the control channel of the first system information, the data channel of the first system information, and the first common signal may be in the order shown in fig. 5a, or may be in other orders, for example, a signal mapping order corresponding to frequency domain resources from low to high may also be the control channel of the first system information, the data channel of the first system information, and the first common signal, or the first common signal, the control channel of the first system information, and the data channel of the first system information, or the control channel of the first system information, the first common signal, and the data channel of the first system information, etc., which is not limited herein.

In the embodiment of the present application, the mapping pattern shown in fig. 5a is also applicable to the case where the first subcarrier spacing of the first common signal is small (for example, the first subcarrier spacing may be 15kHz or 30 kHz). Since the smaller the first wavelet interval, the smaller the bandwidth occupied by the first common signal. In the embodiment of the application, the first common signal, the control channel of the first system information and the data channel of the first system information are frequency division multiplexed on the same time unit, so that the situation that the first common signal is transmitted separately on the time unit and the regulatory requirement of the unauthorized frequency band cannot be met can be avoided.

In this embodiment, when the first common signal is SS/PBCH Block and the first system information is RMSI, the mapping pattern shown in fig. 5a may be specifically shown in fig. 5 b. In the example shown in fig. 5b, the control channel of the RMSI is denoted by a RMSI control resource set (CORESET), and the data channel of the RMSI is denoted by the RMSI.

In this embodiment, as shown in fig. 6a, the first mapping pattern may be that the control channel of the first system information and the data channel of the first system information occupy the same frequency domain resources but have orthogonal time domain resources, the time domain resources occupied by the first common signal and the time domain resources jointly occupied by the control channel and the data channel of the first system information are the same, and the frequency domain resources occupied by the first common signal and the frequency domain resources occupied by the control channel of the first system information are orthogonal. It should be understood that, in the first mapping pattern, the relative positions between the control channel of the first system information, the data channel of the first system information, and the first common signal may be in the order shown in fig. 6a, or may be in other orders, for example, the signal mapping order corresponding to the frequency domain resources from low to high may also be the first common signal, the control channel of the first system information, the data channel of the first system information, or may be the control channel of the first system information, the data channel of the first system information, the first common signal, etc., which is not limited herein.

In the embodiment of the present application, in the mapping pattern shown in fig. 6a, the first common signal is frequency division multiplexed with the control channel of the first system information, and the first common signal is frequency division multiplexed with the data channel of the first system information, so that a situation that the first common signal is separately transmitted in a time unit can be avoided, and regulatory requirements of an unlicensed frequency band can be satisfied no matter the subcarrier interval of the first common signal is large or small. In this embodiment, when the first common signal is SS/PBCH Block and the first system information is RMSI, the mapping pattern shown in fig. 6a may be specifically shown in fig. 6 b. In the example shown in fig. 6b, the control channel of the RMSI is denoted by a RMSI control resource set (CORESET), and the data channel of the RMSI is denoted by the RMSI.

For another example, in the embodiment of the present application, when the first subcarrier spacing or the second subcarrier spacing is 60kHz, the mapping pattern may be a second mapping pattern, and the first mapping pattern or the second mapping pattern may be the same or different. The first subcarrier spacing or the second subcarrier spacing is 60kHz, and may specifically be: the first subcarrier spacing is 60kHz and the second subcarrier spacing is not limited, e.g., the second subcarrier spacing may be any one of 15kHz, 30kHz, or 60kHz, or the first subcarrier spacing is not limited, e.g., the first subcarrier spacing may be any one of 15kHz, 30kHz, or 60kHz and the second subcarrier spacing is 60kHz, or both the first subcarrier spacing and the second subcarrier spacing are 60 kHz.

In an example of the present application, as shown in fig. 7a, the second mapping pattern may be a time division multiplexing of a control channel of the first system information, a data channel of the first system information, and the first common signal. It should be noted that, in the mapping pattern shown in fig. 7a, the first common signal is repeatedly transmitted multiple times on different frequency domain resources within the same time unit occupied by the first common signal, where the number of the repeatedly transmitted first common signals is 2, which is merely an exemplary illustration and is not a limitation to the present application. It should be understood that, in the second mapping pattern, the relative positions between the control channel of the first system information, the data channel of the first system information, and the first common signal may be in the order shown in fig. 7a, or may be in other orders, for example, the signal mapping order corresponding to the time domain resource from morning to evening may also be the first common signal, the data channel of the first system information, the control channel of the first system information, or the control channel of the first system information, the data channel of the first system information, the first common signal, or the control channel of the first system information, the first common signal, the data channel of the first system information, etc., which is not limited herein. In the mapping pattern shown in fig. 7a, the first common signal is repeatedly transmitted on different frequency domain resources within the same time unit occupied by the first common signal for multiple times, so that the regulatory requirement of the unlicensed frequency band can be satisfied no matter whether the interval of the first subcarrier corresponding to the first common signal is large or small.

In this embodiment, when the first common signal is SS/PBCH Block and the first system information is RMSI, the mapping pattern shown in fig. 7a may be specifically shown in fig. 7 b. In the example shown in fig. 7b, the control channel of the RMSI is denoted by a RMSI control resource set (CORESET), and the data channel of the RMSI is denoted by the RMSI.

In another example of the present application, as shown in fig. 8a, the control channel of the first system information is frequency division multiplexed with the first common signal in the second mapping pattern, the data channel of the first system information is time division multiplexed with the control channel of the first system information, and the first common signal is time division multiplexed with the data channel of the first system information. It should be understood that, in the second mapping pattern, the relative positions between the control channel of the first system information, the data channel of the first system information, and the first common signal may be in the order shown in fig. 8a, or may be in other orders, for example, the signal mapping order corresponding to the time domain resource from the beginning to the end may also be the control channel of the first common signal/first system information, the data channel of the first system information, or the data channel of the first system information, the control channel of the first common signal/first system information, etc., which is not limited herein.

In the mapping pattern shown in fig. 8a, the first common signal and the control channel of the first system information are frequency division multiplexed on the same time unit, so that the regulatory requirement of the unlicensed frequency band can be satisfied regardless of the size of the first subcarrier interval corresponding to the first common signal.

In this embodiment, when the first common signal is SS/PBCH Block and the first system information is RMSI, the mapping pattern shown in fig. 8a may be specifically shown in fig. 8 b. In the example shown in fig. 8b, the control channel of the RMSI is denoted by a RMSI control resource set (CORESET), and the data channel of the RMSI is denoted by the RMSI.

In another example of the present application, referring to fig. 6a, the second mapping pattern may be that the control channel of the first system information and the data channel of the first system information occupy the same frequency domain resources and are orthogonal to each other, the time domain resources occupied by the first common signal and the time domain resources jointly occupied by the control channel and the data channel of the first system information are the same, and the frequency domain resources occupied by the first common signal and the frequency domain resources occupied by the control channel of the first system information are orthogonal to each other.

In this embodiment, when the first common signal is SS/PBCH Block and the first system information is RMSI, the mapping pattern shown in fig. 6a may be specifically shown in fig. 6 b. In the example shown in fig. 6b, the control channel of the RMSI is denoted by a RMSI control resource set (CORESET), and the data channel of the RMSI is denoted by the RMSI.

In this embodiment, the first mapping pattern or the second mapping pattern may be predefined for the network device and the terminal. The network device may indicate the first mapping pattern or the second mapping pattern to the terminal. For example, the network device may indicate the first mapping pattern or the second mapping pattern alone, or the network device may jointly encode the first mapping pattern or the second mapping pattern with other information to jointly indicate the first mapping pattern or the second mapping pattern with the other information, which is not limited herein. In the embodiment of the present application, the number of candidate mapping patterns included in the first mapping pattern or the second mapping pattern is not limited, for example, the first mapping pattern may include one or more candidate mapping patterns, and the second mapping pattern may also include one or more candidate mapping patterns.

In an example of the present application, as shown in table 1, the first mapping pattern and the second mapping pattern may be respectivelyThe mapping structure comprises 3 candidate mapping patterns, indexes of the candidate mapping patterns are 1 to 3 respectively, each candidate mapping pattern can be specifically used for indicating a time-frequency multiplexing pattern between SS/PBCH Block and RMSI CORESET, and the first mapping pattern or the second mapping pattern and the number of Resource Blocks (RBs) occupied by control channels of RMSI can be calculated

Number of OFDM symbols occupied by RMSI CORESET

And at least one of an RB offset (offset) of the RMSI CORESET relative to the SS/PBCH Block.

TABLE 1

In the embodiment of the present application, for the mapping patterns provided in fig. 4a to 8a above, if the control channel of the first system information is frequency division multiplexed with the data channel of the first system information, the bandwidth of the data channel of the first system information may be equal to the first known bandwidth minus the bandwidth of the control channel of the first system information. If the control channel of the first system information, the data channel of the first system information, and the first common signal are frequency division multiplexed, the bandwidth of the data channel of the first system information may be equal to the first known bandwidth minus the bandwidth of the control channel of the first system information and the bandwidth of the first common signal. The first known bandwidth may be a bandwidth of initial system access (for example, in the unlicensed frequency band, a 20MHz bandwidth may be used as a bandwidth of initial system access), or the first known bandwidth may be a minimum channel bandwidth supported by the terminal, or other downlink fixed bandwidths, for example, the minimum channel bandwidth supported by the unlicensed frequency band may be an integer multiple of the initial access channel bandwidth, that is, an integer multiple of 20MHz, for example, the minimum channel bandwidth supported by the unlicensed frequency band may be 20 × a MHz, where a may be a positive integer greater than or equal to 1, and the like, and the present application is not limited in particular. If the first common signal is time division multiplexed with a data channel of first system information, a time-frequency resource occupied by the data channel of the first system information is an Orthogonal Frequency Division Multiplexing (OFDM) symbol between two adjacent time-domain first common signals.

In the embodiment of the present application, the mapping patterns provided in fig. 4a to fig. 8a may include a repeated mapping pattern of the first common signal, where the repeated mapping pattern of the first common signal may include the number of times of repetition of the first common signal, a frequency domain interval between two adjacent first common signals on the frequency domain resource in a time unit occupied by the first common signal, and the like. For example, in the mapping pattern shown in fig. 4a, the repeated mapping pattern of the first common signal may specifically be: the first common signals are repeatedly mapped for 2 times, and the frequency interval between two adjacent first common signals on the frequency domain resource is n megahertz (MHz).

In an embodiment of the present application, the repetitive mapping pattern of the first common signal may be determined in the following manner:

example 1: the terminal determines a repeated mapping pattern of the first common signal according to a second subcarrier spacing of the first common signal, for example, when the second subcarrier spacing is 15 kilohertz (kHz), the first common signal is repeatedly mapped 4 times, and a frequency spacing between adjacent first common signals is n1 Physical Resource Blocks (PRBs). When the second subcarrier spacing is 30kHz, the first common signal is repeatedly mapped 2 times, and the frequency spacing between adjacent first common signals is n2 PRBs. When the second subcarrier spacing is 60kHz, the first common signal is mapped repeatedly 1 time, i.e. the first common signal is not repeated. The values of n1, n2 may be equal or unequal. Wherein the values of n1 and n2 are also related to the system bandwidth size of the first common signal mapping. For example, in a scenario where the second subcarrier interval is 15kHz and the system bandwidth mapped by the first common signal is 20MHz, the value of n1 may be 5 PRBs (the 5 PRBs are spaced by taking 15kHz as a reference subcarrier); in a scenario where the second subcarrier interval is 30kHz and the system bandwidth mapped by the first common signal is 20MHz, the value of n2 may be 8 PRBs (the 8 PRBs are spaced by using 30kHz as a reference subcarrier).

Example 2: the network device may transmit second indication information indicating a repeated mapping pattern of the first common signal. The terminal may determine a repeated mapping pattern of the first common signal according to the second indication information.

In the embodiment of the present application, when at least two first common signals are included in the repeated mapping pattern of the first common signal, that is, when the first common signal is repeatedly mapped multiple times, the multiple times is greater than or equal to two times. The terminal may determine one first common signal of the at least two first common signals as a reference first common signal and then receive control information of first system information based on the reference first common signal. Specifically, the terminal may receive, based on the reference first common signal, control information carried in a control channel of the first system information.

In this embodiment, the second indication information may be carried in a different message and notified to the terminal. For example, the second indication information may be carried in at least one of a physical broadcast channel, system information, RRC signaling, and a physical downlink control channel, and is notified to the terminal, which is not limited herein.

In an example, the network device may transmit third indication information to the terminal, the third indication information indicating a reference first common signal, and then the terminal may determine the reference first common signal among the at least two first common signals based on the third indication information.

In this embodiment, the third indication information may be carried in a different message and notified to the terminal. For example, the third indication information may be carried in at least one of a physical broadcast channel, system information, RRC signaling, and a physical downlink control channel, and is notified to the terminal, which is not limited herein.

In another example, the first indication information sent by the network device may include indication information referring to the first common signal, and the terminal may determine the reference first common signal according to the indication information referring to the first common signal in the first indication information.

It can be understood that the method provided in fig. 3 can be applied to an unlicensed frequency band and can also be applied to a frequency-weighted frequency band, and fig. 1 is only an example of the application of the present application, and is not intended to limit the present application, for example, the method provided in the embodiment of the present application can also be applied to a wireless-fidelity (WIFI) communication system and a worldwide interoperability for microwave access (wimax) communication system, and the like.

In the embodiment of the present application, the mapping patterns provided in fig. 4b to fig. 8b can be applied to unlicensed frequency bands, especially low frequency bands (e.g. 5GHz carrier frequency band range) of the unlicensed frequency bands. When the mapping patterns provided in fig. 4b to fig. 8b are applied to the unlicensed frequency band, the regulatory requirements can be satisfied. In the embodiment of the present application, the minimum channel bandwidth of the unlicensed frequency band is 20MHz for example.

For the mapping pattern provided in fig. 4b, SS/PBCH Block is time division multiplexed with RMSI CORESET, and frequency division multiplexed between RMSI and RMSI CORESET. The size of the frequency domain resources of the RMSI may be the same as the size of the frequency domain resources of the RMSI CORESET, that is, the size of the frequency domain resources occupied by the RMSI and the RMSI CORESET is 10MHz, or the size of the frequency domain resources occupied by the RMSI may be equal to the size obtained by subtracting the size of the frequency domain resources of the RMSI CORESET from 20 MHz. Further, in order to meet the regulatory requirement, the SS/PBCH Block may be repeatedly mapped within the minimum channel bandwidth of the unlicensed frequency band, and in fig. 4b, the repeated mapping of the SS/PBCH Block is taken as an example to be described twice.

For the mapping pattern provided in fig. 5b, the SS/PBCH Block, the RMSI, and the RMSI CORESET are frequency division multiplexed, and the size of the frequency domain resource of the RMSI may be the same as the size of the frequency domain resource of the RMSI CORESET, or the size of the frequency domain resource occupied by the RMSI may be equal to the size obtained by subtracting the size of the frequency domain resource of the RMSI CORESET from 20MHz, and then subtracting the size of the frequency domain resource of the SS/PBCH Block.

For the mapping pattern provided in fig. 6b, the SS/PBCH Block and the RMSI core are frequency division multiplexed within the time unit occupied by the RMSI core, the SS/PBCH Block and the RMSI are frequency division multiplexed within the time unit occupied by the RMSI, the RMSI and the RMSI core are both time division multiplexed, and the frequency domain resources occupied by the RMSI and the RMSI core may be the same or different.

For the mapping pattern provided in FIG. 7b, the SS/PBCH Block, RMSI, and RMSI CORESET are time-multiplexed. Further, in order to meet the regulatory requirement, the SS/PBCH Block may be repeatedly mapped within the minimum channel bandwidth of the unlicensed frequency band, and in the example shown in fig. 7b, the repeated mapping is taken as an example to be described. The frequency domain resource size occupied by the RMSI may be the same as the frequency domain resource size occupied by the RMSI CORESET.

For the mapping pattern provided in fig. 8b, the SS/PBCH Block and the RMSI core are frequency division multiplexed, and the SS/PBCH Block and the RMSI are time division multiplexed. The size of the frequency domain resources occupied by the RMSI may be predefined, for example, the size of the frequency domain resources occupied by the RMSI may be fixed to 20MHz, or the size of the frequency domain resources occupied by the RMSI may be fixed to the sum of the size of the frequency domain resources occupied by the RMSI CORESET and the SS/PBCH Block bandwidth, which is not specifically limited herein. In the mapping pattern provided in fig. 8b, the SS/PBCH Block may be associated with RMSI, and optionally, the RMSI may be located on a downlink symbol reserved in the middle of two temporally consecutive SS/PBCH blocks, or located on a downlink symbol after the associated SS/PBCH Block, which is not limited in this regard.

In this embodiment of the application, in the mapping patterns shown in fig. 4b and fig. 7b, since the SS/PBCH Block and COREST are time-division multiplexed, in order to meet the requirements of regulations under different subcarrier spacings of the SS/PBCH Block, the SS/PBCH Block may be repeatedly transmitted within a frequency domain bandwidth. Therefore, in the embodiment of the application, a repeated mapping pattern of the SS/PBCH Block is defined.

In this embodiment, the repetition mapping pattern of the SS/PBCH Block may include a repetition number, a frequency domain interval between two adjacent SS/PBCH blocks in a frequency domain within a same time unit occupied by the SS/PBCH Block, and the like. In this embodiment, the repetition mapping pattern of the SS/PBCH Block may be determined by the subcarrier spacing of the SS/PBCH Block, for example, when the subcarrier spacing of the SS/PBCH Block is 15kHz, the number of repetitions of the SS/PBCH Block may be fixed to 4, when the subcarrier spacing of the SS/PBCH Block is 30kHz, the number of repetitions of the SS/PBCH Block may be fixed to 2, and when the subcarrier spacing of the SS/PBCH Block is 60kHz, the number of repetitions of the SS/PBCH Block may be fixed to 1.

In the embodiment of the present application, when the SS/PBCH Block is repeated multiple times, multiple repeated SS/PBCH blocks may be associated with one RMSI and one RMSI core set. At this point, the associated RMSI and RMSI CORESET may determine frequency domain resource locations of the RMSI and RMSI CORESET based on one of the plurality of repeated SS/PBCH blocks. For convenience of description, the SS/PBCH Block for determining the location of the RMSI and RMSI CORESET frequency domain resources is referred to as a reference SS/PBCH Block.

In this embodiment of the application, the reference SS/PBCH Block may be predefined, or the reference SS/PBCH Block may also be notified to the terminal by the network device in a signaling display manner, for example, the third indication information, or a domain field indicated by the reference SS/PBCH Block is newly added in the CORESET configuration information of a Physical Broadcast Channel (PBCH), and the domain field indicated by the reference SS/PBCH Block may be jointly encoded and indicated with other information domain fields, for example, as shown in table 2, or may be indicated separately, which is not limited herein. It should be noted that, in table 2, the domain field indicated by the SS/PBCH Block is denoted as a reference SS/PBCH Block index.

TABLE 2

In the embodiment of the application, when the terminal does not detect the reference SS/PBCH Block, the terminal may further determine the frequency domain resource location of the RMSI CORESET by detecting the phase location of the other SS/PBCH Block relative to the reference SS/PBCH Block and the frequency domain resource location of the reference SS/PBCH Block. In this embodiment, the network device may notify the terminal of the index information of other SS/PBCH blocks through PBCH or other newly added signals in the SS/PBCH Block, which is not limited herein.

In the embodiment of the present application, in the unlicensed frequency band, since it needs to be considered to meet the regulatory requirement, the signal transmission usually needs to occupy the entire minimum channel bandwidth or a large part of the minimum channel bandwidth. Thus, the determination of the frequency domain resource location of the RMSI CORESET (mainly referring to the frequency domain location offset relative to the SS/PBCH Block) can be decoupled as much as possible from the frequency domain resource location of the SS/PBCH Block, i.e. the frequency domain resource location of the RMSI CORESET is independent of the time-frequency resource location of the first common signal. Such as: the starting position of the frequency domain resource of the RMSI CORESET is fixed to the minimum physical resource block position or the maximum physical resource block position of the minimum channel bandwidth, and the size of the frequency domain resource occupied by the RMSI can be equal to 20MHz minus the RMSI CORESET bandwidth. Thus, the saved RMSI CORESET configuration information bits may be used to transmit some other information, such as association relation indication from SS/PBCH Block to random access occasion (RACH occasion, RO), and the like.

Therefore, by adopting the mapping pattern in the embodiment of the application, the multiplexing efficiency of various signals can be maximized and the configuration signaling overhead can be minimized on the basis of meeting the requirements of regulations.

Based on the above concept, as shown in fig. 9, the present application provides a communication device 900, and the communication device 900 may include a transceiver unit 901 and a processing unit 902.

In an example of the present application, the communication apparatus 900 may be applied to a terminal or a chip in the terminal, and is configured to execute the steps of the flow shown in fig. 3, which take the terminal as an execution subject.

The transceiver 901 is configured to receive first indication information from a network device; wherein the first indication information is used to indicate a mapping pattern between a first common signal and at least one of a data channel of first system information and a control channel of first system information, the mapping pattern being related to at least one of a first subcarrier spacing or a second subcarrier spacing, the first subcarrier spacing being a subcarrier spacing of the control channel of the first system information, the second subcarrier spacing being a subcarrier spacing of the first common signal. A processing unit 902, configured to control the transceiver to receive the first system information according to the first indication information.

In an example of the present application, the communication apparatus 900 may be applied to a network device or a chip in the network device, and is configured to execute the steps of the flow shown in fig. 3, where the network device is taken as an execution subject.

A processing unit 902 operable to generate first indication information; wherein the first indication information is used to indicate a mapping pattern between a first common signal and at least one of a data channel of first system information and a control channel of first system information, the mapping pattern being related to at least one of a first subcarrier spacing or a second subcarrier spacing, the first subcarrier spacing being a subcarrier spacing of the control channel of the first system information, the second subcarrier spacing being a subcarrier spacing of the first common signal. A transceiving unit 901, configured to send the first indication information to the terminal.

For specific functions of the processing unit 902 and the transceiver 901, reference may be made to the description of the flow shown in fig. 3, which is not described herein again.

Based on the above concept, as shown in fig. 10, the present application further provides a communication apparatus 1000, where the communication apparatus 1000 is applicable to the network device or the chip in the network device shown in fig. 3, and is also applicable to the terminal or the chip in the terminal shown in fig. 3, and is not limited herein.

The communication device 1000 may include a processor 1001 and a memory 1002. Further, the apparatus may also include a receiver 1004 and a transmitter 1005. Further, the apparatus may also include a bus system 1003.

The processor 1001, the memory 1002, the receiver 1004 and the transmitter 1005 may be connected via the bus system 1003, the memory 1002 may store instructions, and the processor 1001 may be configured to execute the instructions stored in the memory 1002 to control the receiver 1004 to receive signals and control the transmitter 1005 to transmit signals, so as to complete the steps mainly including the network device or the terminal in the method shown in fig. 3.

The receiver 1004 and the transmitter 1005 may be different physical entities, or may be the same physical entity, and may be collectively referred to as a transceiver. The memory 1002 may be integrated in the processor 1001 or may be a different physical entity from the processor 1001.

As an implementation, the functions of the receiver 1004 and the transmitter 1005 may be realized by a transceiving circuit or a dedicated chip for transceiving. The processor 1001 may be considered to be implemented by a dedicated processing chip, processing circuit, processor, or a general-purpose chip.

As another implementation manner, a manner of using a computer may be considered to implement the functions of the network device or the terminal provided in the embodiments of the present application. Program code that implements the functions of the processor 1001, the receiver 1004, and the transmitter 1005 is stored in the memory 1002, and a general-purpose processor may implement the functions of the processor 1001, the receiver 1004, and the transmitter 1005 by executing the code in the memory.

For the concepts, explanations, and detailed descriptions related to the technical solutions provided in the present application and other steps related to the communication device 1000, reference may be made to the descriptions of the foregoing methods or other embodiments, which are not described herein again.

In an example of the present application, the communication device 1000 may be applied to a terminal or a chip in the terminal, and the communication device 1000 may be configured to perform the steps of the flow shown in fig. 3, which are executed by the terminal. Such as the receiver 1004, may be configured to receive the first indication information from the network device. The processor 1001 may be configured to control the receiver 1004 to receive the first system information according to the first indication information.

In an example of the present application, the communication apparatus 1000 may be applied to a network device or a chip in the network device, and the communication apparatus 1000 may be configured to execute the steps that take the network device as an execution subject in the flow shown in fig. 3. Such as processor 1001, may be configured to generate the first indication information. A transmitter 1005 operable to transmit the first indication information to the terminal.

For the descriptions of the processor 1001, the receiver 1004 and the transmitter 1005, reference may be made to the description of the flowchart shown in fig. 3, which is not repeated herein.

Similar to the above concept, as shown in fig. 11, the present application further provides a schematic structural diagram of a network device, for example, a base station. The base station may be applied in the scenario of the communication system shown in fig. 1, and the base station may be a network device in the flow shown in fig. 3.

Specifically, the base station 1100 may include one or more radio frequency units, such as a Remote Radio Unit (RRU) 1101 and one or more baseband units (BBUs) (which may also be referred to as digital units, DUs) 1102. The RRU1101 may be a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc., which may include at least one antenna 11011 and a radio unit 11012. The RRU1101 portion may be used for transceiving radio frequency signals and converting the radio frequency signals to baseband signals, for example, sending first indication information to a terminal. The BBU1102 portion may be used for baseband processing, control of base stations, and the like. The RRU1101 and the BBU1102 may be physically disposed together or may be physically disposed separately, i.e., a distributed base station.

The BBU1102 is a control center of the base station, and may also be referred to as a processing unit, and is used for performing baseband processing functions, such as channel coding, multiplexing, modulation, and spreading. For example, the BBU (processing unit) can be used to control the base station to perform the method in the flow shown in fig. 3.

In an example, the BBU1102 may be formed by one or more boards, where the boards may collectively support a radio access network (e.g., an NR network) of a single access system, or may respectively support radio access networks of different access systems. The BBU1102 can also include a memory 11021 and a processor 11022. The memory 11021 stores necessary instructions and data. For example, the memory 11021 stores instructions of "first instruction information" in the above-described embodiment, and the processor 11022 is configured to control the base station to perform necessary operations. In addition, each single board can be provided with necessary circuits.

As with the above concept, fig. 12 provides a schematic structural diagram of a terminal that can be applied to the flow shown in fig. 3, taking the terminal as an execution subject, and fig. 12 shows only the main components of the terminal for convenience of explanation. As shown in fig. 12, the terminal 1200 may include a processor, a memory, a control circuit, and optionally an antenna and/or an input-output device. The processor may be configured to process communication protocols and communication data, and to control the user equipment, execute software programs, and process data of the software programs. The memory may store software programs and/or data. The control circuit can be used for conversion of the baseband signal and the radio frequency signal and processing of the radio frequency signal. The control circuit and the antenna together, which may also be called a transceiver, may be used for transceiving radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., can be used to receive data entered by a user and to output data to the user.

In the embodiment of the present application, the processor may read the software program in the storage unit, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to user equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data.

Those skilled in the art will appreciate that fig. 12 shows only one memory and processor for ease of illustration. In an actual user equipment, there may be multiple processors and memories. The memory may also be referred to as a storage medium or a storage device, and the like, which is not limited in this application.

As an alternative implementation, the processor may include a baseband processor and a central processing unit, the baseband processor may be configured to process the communication protocol and the communication data, and the central processing unit may be configured to control the entire user equipment, execute a software program, and process data of the software program. The processor in fig. 12 integrates the functions of the baseband processor and the central processing unit, and those skilled in the art will understand that the baseband processor and the central processing unit may also be independent processors, and are interconnected through a bus or the like. Those skilled in the art will appreciate that the terminal may include a plurality of baseband processors to accommodate different network formats, a plurality of central processors to enhance its processing capability, and various components of the terminal may be connected by various buses. The baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.

For example, in the embodiment of the present application, an antenna and a control circuit having a transceiving function may be used as the transceiving unit 1201 of the terminal 1200, and a processor having a processing function may be considered as the processing unit 1202 of the terminal 1200. As shown in fig. 12, the terminal 1200 may include a transceiving unit 1201 and a processing unit 1202. A transceiver unit may also be referred to as a transceiver, a transceiving device, etc. Optionally, a device for implementing a receiving function in the transceiving unit 1201 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiving unit 1201 may be regarded as a transmitting unit, that is, the transceiving unit 1201 includes a receiving unit and a transmitting unit. For example, the receiving unit may also be referred to as a receiver, a receiving circuit, etc., and the sending unit may also be referred to as a transmitter, a transmitting circuit, etc.

It should be understood that the network device in the above-mentioned respective apparatus embodiments completely corresponds to the network device or the terminal in the terminal and method embodiments, and the corresponding steps are executed by corresponding modules or units, for example, the sending module (transmitter) method executes the steps sent in the method embodiments, the receiving module (receiver) executes the steps received in the method embodiments, and other steps except sending and receiving can be executed by a processing module (processor). The functionality of the specific modules may be referred to in the respective method embodiments. The transmitting module and the receiving module can form a transceiving module, and the transmitter and the receiver can form a transceiver to realize transceiving function together; the processor may be one or more.

According to the method provided by the embodiment of the present application, an embodiment of the present application further provides a communication system, which includes the foregoing network device and terminal.

Based on the above embodiments, the present application further provides a computer storage medium, in which a software program is stored, and the software program can implement the method provided by any one or more of the above embodiments when being read and executed by one or more processors. The computer storage medium may include: u disk, removable hard disk, read only memory, random access memory, magnetic or optical disk, etc. for storing program codes.

Based on the above embodiments, the present application further provides a chip, where the chip includes a processor, and is configured to implement the functions related to any one or more of the above embodiments, such as obtaining or processing information or messages related to the above methods. Optionally, the chip further comprises a memory for storing program instructions and data for execution by the processor. The chip may also contain chips and other discrete devices.

It should be understood that in the embodiments of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general purpose processors, Digital Signal Processors (DSPs), application-specific integrated circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, transistor logic devices, discrete hardware components, and the like. The general purpose processor may be a microprocessor, any conventional processor, etc.

The memory may include both read-only memory and random access memory, and provides instructions and data to the processor. The portion of memory may also include non-volatile random access memory.

The bus system may include a power bus, a control bus, a status signal bus, and the like, in addition to the data bus. For clarity of illustration, however, the various buses are labeled as a bus system in the figures. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or may be implemented by a combination of hardware and software modules in a processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory, and a processor reads information in the memory and completes the steps of the method in combination with hardware of the processor. To avoid repetition, it is not described in detail here.

In the embodiments of the present application, unless otherwise specified or conflicting with respect to logic, the terms and/or descriptions in different embodiments have consistency and may be mutually cited, and technical features in different embodiments may be combined to form a new embodiment according to their inherent logic relationship.

In the present application, "at least one" means one or more, "a plurality" means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone, wherein A and B can be singular or plural. In the description of the text of the present application, the character "/" generally indicates that the former and latter associated objects are in an "or" relationship; in the formula of the present application, the character "/" indicates that the preceding and following related objects are in a relationship of "division".

It is to be understood that the various numerical references referred to in the embodiments of the present application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of the present application. The sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of the processes should be determined by their functions and inherent logic.

Claims

1. A method of communication, comprising:

the terminal receives first indication information from the network equipment;

wherein the first indication information is used to indicate a mapping pattern between a first common signal and at least one of a data channel of first system information and a control channel of first system information, the mapping pattern being related to at least one of a first subcarrier spacing or a second subcarrier spacing, the first subcarrier spacing being a subcarrier spacing of the control channel of the first system information, the second subcarrier spacing being a subcarrier spacing of the first common signal;

and the terminal receives the first system information according to the first indication information.

2. The method of claim 1, further comprising:

and the terminal determines a repeated mapping pattern of the first common signal according to the second subcarrier interval of the first common signal.

3. The method according to claim 1 or 2, characterized in that the method further comprises:

the terminal receives second indication information from the network equipment;

and the terminal determines a repeated mapping pattern of the first public signal according to the second indication information.

4. The method according to any one of claims 1 to 3, further comprising:

when at least two first common signals are included in the repeated mapping pattern of the first common signal, the terminal determines one first common signal of the at least two first common signals as a reference first common signal;

and the terminal receives the control channel of the first system information according to the reference first common signal.

5. The method of claim 4, wherein the terminal determining one of the at least two first common signals as a reference first common signal comprises:

the terminal receives third indication information from the network equipment, wherein the third indication information is used for indicating the reference first public signal;

and the terminal determines the reference first common signal in the at least two first common signals according to the third indication information.

6. The method according to claim 4, wherein the first indication information further comprises indication information of the reference first common signal;

the terminal determines one first common signal of the at least two first common signals as a reference common signal, and includes:

and the terminal determines the reference first common signal in the at least two first common signals according to the indication information of the reference first common signal included in the first indication information.

7. A method of communication, comprising:

the network equipment generates first indication information;

and the network equipment sends the first indication information to the terminal.

8. The method of claim 7, further comprising:

and the network equipment sends second indication information to the terminal, wherein the second indication information is used for indicating the repeated mapping pattern of the first public signal.

9. The method according to claim 7 or 8, wherein if at least two of the first common signals are included in the repeating pattern of the first common signals, the method further comprises:

and the network equipment sends third indication information to the terminal, wherein the third indication information is used for indicating that one first public signal in the at least two first public signals is a reference first public signal.

10. The method according to any of claims 7 or 8, wherein if at least two first common signals are included in the repeating pattern of the first common signal, the first indication information further includes indication information of a reference common signal, and the reference common signal is one of the at least two first common signals.

11. A communications apparatus, comprising:

a transceiver for receiving first indication information from a network device;

and the processor is used for controlling the transceiver to receive the first system information according to the first indication information.

12. The apparatus of claim 11, wherein the processor is further configured to:

determining a repeated mapping pattern of the first common signal according to a second subcarrier spacing of the first common signal.

13. The apparatus of claim 11 or 12,

the transceiver is further used for receiving second indication information from the network equipment;

the processor is further configured to determine a repeated mapping pattern of the first common signal according to the second indication information.

14. The apparatus of claim 12 or 13,

the processor is further configured to determine one of the at least two first common signals as a reference first common signal when at least two of the first common signals are included in the repeating pattern of the first common signal;

the processor is further configured to receive a control channel of the first system information according to the reference first common signal.

15. The apparatus of claim 14, wherein the processor, when determining that one of the at least two first common signals is a reference first common signal, is specifically configured to:

controlling the transceiver to receive third indication information from the network device, the third indication information indicating the reference first common signal;

determining the reference first common signal among the at least two first common signals according to the third indication information.

16. The apparatus according to claim 14, wherein the first indication information further comprises indication information of the reference first common signal;

the processor, when determining that one of the at least two first common signals is a reference common signal, is specifically configured to:

determining the reference first common signal among the at least two first common signals according to indication information of the reference first common signal included in the first indication information.

17. A communication apparatus, characterized in that,

a processor for generating first indication information;

and the transceiver is used for sending the first indication information to the terminal.

18. The apparatus of claim 17,

the transceiver is further configured to send second indication information to the terminal, where the second indication information is used to indicate a repeated mapping pattern of the first common signal.

19. The apparatus according to claim 17 or 18, wherein if at least two of the first common signals are included in the repeating pattern of the first common signals, the transceiver is further configured to:

and sending third indication information to the terminal, wherein the third indication information is used for indicating that one first common signal in the at least two first common signals is a reference first common signal.

20. The apparatus according to claim 17 or 18, wherein if at least two first common signals are included in the repeating pattern of the first common signal, the first indication information further includes indication information of a reference common signal, and the reference common signal is one first common signal of the at least two first common signals.

21. The method of any one of claims 1 to 6, the method of any one of claims 7 to 10, the apparatus of any one of claims 11 to 16, or the apparatus of any one of claims 17 to 20, wherein the first subcarrier spacing or the second subcarrier spacing is any one of 15kHz, 30kHz, 60 kHz.

22. The method of any one of claims 1 to 6, the method of any one of claims 7 to 10, the apparatus of any one of claims 11 to 16, or the apparatus of any one of claims 17 to 20, wherein the mapping pattern is a first mapping pattern when the first subcarrier spacing is 15kHz or 30kHz and the second subcarrier spacing is 15kHz or 30 kHz;

the mapping pattern is a second mapping pattern when the first subcarrier spacing or the second subcarrier spacing is 60 kHz.

23. The method of any one of claims 1 to 6, the method of any one of claims 7 to 10, the apparatus of any one of claims 11 to 16, or the apparatus of any one of claims 17 to 20, wherein the data channel of the first system information and the control channel of the first system information in the first mapping pattern are frequency division multiplexed, and the control channel of the first system information is time division multiplexed with the first common signal, and the data channel of the first system information is time division multiplexed with the first common signal.

24. The method of any one of claims 1 to 6, the method of any one of claims 7 to 10, the apparatus of any one of claims 11 to 16, or the apparatus of any one of claims 17 to 20, wherein a control channel of the first system information, a data channel of the first system information, and the first common signal in the first mapping pattern are frequency division multiplexed.

25. The method according to any one of claims 1 to 6, the method according to any one of claims 7 to 10, the apparatus according to any one of claims 11 to 16, or the apparatus according to any one of claims 17 to 20, wherein the control channel of the first system information and the data channel of the first system information in the first mapping pattern or the second mapping pattern occupy the same frequency domain resources and are orthogonal to each other, the time domain resources occupied by the first common signal and the time domain resources jointly occupied by the control channel and the data channel of the first system information are the same, and the frequency domain resources occupied by the first common signal and the frequency domain resources occupied by the control channel of the first system information are orthogonal to each other.

26. The method of any one of claims 1 to 6, the method of any one of claims 7 to 10, the apparatus of any one of claims 11 to 16, or the apparatus of any one of claims 17 to 20, wherein the control channel of the first system information, the data channel of the first system information, and the first common signal in the second mapping pattern are time division multiplexed.

27. The method of any one of claims 1 to 6, the method of any one of claims 7 to 10, the apparatus of any one of claims 11 to 16, or the apparatus of any one of claims 17 to 20, wherein the control channel of the first system information is frequency division multiplexed with the first common signal in the second mapping pattern, the data channel of the first system information is time division multiplexed with the control channel of the first system information, and the first common signal is time division multiplexed with the data channel of the first system information.

28. The method of any one of claims 1 to 6, the method of any one of claims 7 to 10, the apparatus of any one of claims 11 to 16, or the apparatus of any one of claims 17 to 20, wherein when the control channel of the first system information is frequency division multiplexed with the data channel of the first system information, the bandwidth of the data channel of the first system information is equal to a first known bandwidth minus the bandwidth of the control channel of the first system information;

when the control channel of the first system information, the data channel of the first system information, and the first common signal are frequency division multiplexed, the bandwidth of the data channel of the first system information is equal to a first known bandwidth minus the bandwidth of the control channel of the first system information and the bandwidth of the first common signal.

29. The method of any one of claims 1 to 6, the method of any one of claims 7 to 10, the apparatus of any one of claims 11 to 16, or the apparatus of any one of claims 17 to 20, wherein when the first common signal is time division multiplexed with the data channel of the first system information, the data channel of the first system information occupies time domain resources that are orthogonal frequency division multiplexing, OFDM, symbols between two time domain adjacent first common signals.

30. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program comprising program instructions which, when executed by a computer, cause the computer to carry out the method according to any one of claims 1 to 10.