CN111130732B

CN111130732B - Communication resource allocation method, communication device, and storage medium

Info

Publication number: CN111130732B
Application number: CN201811296727.3A
Authority: CN
Inventors: 向铮铮; 张锦芳; 苏宏家; 郭文婷; 卢磊
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2018-11-01
Filing date: 2018-11-01
Publication date: 2021-12-21
Anticipated expiration: 2038-11-01
Also published as: WO2020088054A1; CN111130732A

Abstract

The embodiment of the application provides a configuration method of communication resources, a communication device and a storage medium, which can be applied to D2D or Internet of vehicles, such as V2X, or can be used in the fields of intelligent driving, intelligent Internet of vehicles and the like, and the method comprises the following steps: the network equipment determines configuration information and sends a control signaling to the first terminal, wherein the control signaling comprises the configuration information, the configuration information is used for indicating the number of OFDM symbols corresponding to a protection interval in a time slot of a sidelink, and/or the configuration information is used for indicating the number of OFDM symbols corresponding to AGC in the time slot of the sidelink, so that the flexible configuration of the number of OFDM symbols corresponding to the protection interval in the time slot of the sidelink is realized, and/or the flexible configuration of the number of OFDM symbols corresponding to AGC in the time slot of the sidelink is realized, so that the OFDM symbols corresponding to AGC or the protection interval are not fixed to be 1 OFDM symbol, and the requirements of the terminal in different communication systems are met.

Description

Communication resource allocation method, communication device, and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method for configuring a communication resource, a communication apparatus, a communication device, and a storage medium.

Background

The number of wireless connections worldwide is undergoing a continuous high-speed growth, and various new wireless service types, such as internet of things, automatic driving, etc., are emerging in large numbers, which all put higher demands on the next Generation wireless communication system, i.e., the fifth Generation (5th Generation, 5G) communication system.

Technologies of vehicle to anything communication (V2X), device-to-device (D2D), vehicle to vehicle (V2V) communication, vehicle to pedestrian (V2P) communication, or vehicle to infrastructure/network (V2I/N) communication are defined in the 5G communication system, and V2V, V2P, and V2I/N are collectively referred to as V2X, which are technologies of direct communication between terminal devices (terminal devices). Vehicle-to-Vehicle (V2V) communication can realize point-to-point communication between vehicles, for example, a certain Vehicle acquires state information and road information of other vehicles in real time through V2V communication, thereby realizing assistant driving or automatic driving of the Vehicle.

In the next generation wireless communication system, that is, the 5G wireless communication system, it may support multiple subcarrier intervals, and different requirements of the terminal need to be met in multiple different scenarios.

Disclosure of Invention

The application provides a configuration method of communication resources, a communication device, communication equipment and a storage medium, so as to meet the requirements of a terminal in different communication systems.

In a first aspect, the present application provides a method for configuring communication resources, including: the network equipment determines configuration information and sends a control signaling to the first terminal, wherein the control signaling comprises the configuration information, the configuration information is used for indicating the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols corresponding to a guard interval in a time slot of a side link, and/or the configuration information is used for indicating the number of OFDM symbols corresponding to Automatic Gain Control (AGC) in the time slot of the side link. By the scheme provided by the embodiment, the flexible configuration of the number of the OFDM symbols corresponding to the guard interval in the time slot of one sidelink is realized, and/or the flexible configuration of the number of the OFDM symbols corresponding to the AGC in the time slot of one sidelink is realized, so that the OFDM symbols corresponding to the AGC or the guard interval are not fixed to 1 OFDM symbol, thereby meeting the requirements of the terminal in different communication systems.

In one possible design, the control signaling is downlink control information DCI. By the scheme provided by the embodiment, the number of OFDM symbols corresponding to the guard interval and/or the number of OFDM symbols corresponding to AGC in the sideline resource currently scheduled by the network equipment can be flexibly configured.

In one possible design, the control signaling is higher layer signaling.

In one possible design, the higher layer signaling is radio resource control, RRC, signaling. By the scheme provided by the embodiment, the number of OFDM symbols corresponding to the guard interval and/or the number of OFDM symbols corresponding to AGC in the resource set for V2V communication can be flexibly configured.

In a second aspect, the present application provides a method for configuring communication resources, including: the second terminal determines configuration information and sends a control signaling to the first terminal, wherein the control signaling comprises the configuration information, and the configuration information is used for indicating the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols corresponding to a guard interval in a time slot of a side link and/or the configuration information is used for indicating the number of OFDM symbols corresponding to Automatic Gain Control (AGC) in the time slot of the side link.

In one possible design, the control signaling is first sidelink control information.

In a third aspect, the present application provides a method for configuring communication resources, including: a first terminal receives a control signaling, wherein the control signaling comprises configuration information, the configuration information is used for indicating the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols corresponding to a protection interval in a time slot of a side link, and/or the configuration information is used for indicating the number of OFDM symbols corresponding to Automatic Gain Control (AGC) in the time slot of the side link; and the first terminal sends information to a third terminal according to the configuration information.

In one possible design, the first terminal receives the control signaling from a network device.

In one possible design, the control signaling is downlink control information DCI.

In one possible design, the control signaling is higher layer signaling.

In one possible design, the higher layer signaling is radio resource control, RRC, signaling.

In one possible design, the first terminal receives first sideline control information from a second terminal.

In one possible design, the information includes second sideline control information and data; the second sideline control information comprises the configuration information.

In a fourth aspect, the present application provides a method for configuring communication resources, including: a first terminal receives first indication information, wherein the first indication information is used for indicating a subcarrier interval of a side uplink; the first terminal determines the number of OFDM symbols corresponding to a guard interval in a time slot of a side link according to the first mapping and the subcarrier interval; and/or the first terminal determines the number of OFDM symbols corresponding to the automatic gain control AGC in the time slot of one side link according to the second mapping and the subcarrier interval; the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to automatic gain control AGC and a subcarrier interval set, the number of OFDM symbols corresponding to the guard interval in a time slot of one sidelink belongs to the set of the number of OFDM symbols corresponding to the guard interval, the number of OFDM symbols corresponding to the automatic gain control AGC in the time slot of one sidelink belongs to the set of the number of OFDM symbols corresponding to the automatic gain control AGC, and the subcarrier interval belongs to the subcarrier interval set.

In one possible design, the first mapping and the second mapping are predefined.

In a fifth aspect, the present application provides a method for configuring communication resources, including: the second terminal determines first indication information according to the first mapping and/or the second mapping, wherein the first indication information is used for indicating the subcarrier spacing of the side uplink; the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to Automatic Gain Control (AGC) and a subcarrier interval set, and the subcarrier interval belongs to the subcarrier interval set; and the second terminal sends the first indication information to the first terminal.

In one possible design, before the second terminal sends the first indication information to the first terminal, the method further includes: the second terminal sends second indication information, the second indication information comprises the first mapping, and/or the second mapping

In a sixth aspect, the present application provides a method for configuring communication resources, including: the network equipment determines first indication information according to the first mapping and/or the second mapping, wherein the first indication information is used for indicating the subcarrier spacing of the side link; the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to Automatic Gain Control (AGC) and a subcarrier interval set, and the subcarrier interval belongs to the subcarrier interval set; and the network equipment sends the first indication information to a first terminal.

In one possible design, before the network device sends the first indication information to the first terminal, the method further includes: the network device sends second indication information, wherein the second indication information comprises the first mapping and/or the second mapping.

In a seventh aspect, the present application provides a communication device, which includes a module, a component or a circuit for implementing the communication method of any one of the first to sixth aspects.

In an eighth aspect, the present application provides a communication apparatus, comprising:

a memory and a processor, the memory and the processor coupled;

the processor is configured to perform the method according to any one of the first to sixth aspects.

In a ninth aspect, the present application provides a computer readable storage medium having stored thereon a computer program which, when run on a computer, causes the computer to perform the method of any of the first to sixth aspects.

In a tenth aspect, the present application provides a computer program for performing the method of any one of the first to sixth aspects when the computer program is executed by a computer.

In a possible design, the program in the tenth aspect may be stored in whole or in part on a storage medium packaged with the processor, or in part or in whole on a memory not packaged with the processor.

In an eleventh aspect, an embodiment of the present application further provides a communication system, including the communication apparatus in the seventh aspect or the eighth aspect.

It can be seen that, in the above aspects, a control signaling is sent to a terminal through a network device, where the control signaling includes configuration information, where the configuration information is used to indicate the number of OFDM symbols corresponding to a guard interval in a timeslot of one sidelink, and/or the configuration information is used to indicate the number of OFDM symbols corresponding to AGC in a timeslot of one sidelink, so that flexible configuration of the number of OFDM symbols corresponding to a guard interval in a timeslot of one sidelink is achieved, and/or flexible configuration of the number of OFDM symbols corresponding to AGC in a timeslot of one sidelink is achieved, so that OFDM symbols corresponding to AGC or a guard interval are not fixed to 1 OFDM symbol, thereby meeting requirements of the terminal in different communication systems.

Drawings

Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application;

fig. 2 is a schematic view of another application scenario provided in the embodiment of the present application;

fig. 3 is a schematic view of another application scenario provided in the embodiment of the present application;

FIG. 4 is a schematic diagram of a bitmap provided herein;

FIG. 5 is a schematic diagram of a sub-channel for sidestream communication provided herein;

FIG. 6 is a schematic diagram of a V2X time slot provided herein;

fig. 7 is a schematic diagram illustrating a method for configuring communication resources according to the present application;

fig. 8 is a schematic diagram of a configuration of a guard interval provided in the present application;

fig. 9 is a schematic diagram of an AGC configuration provided in the present application;

fig. 10 is a schematic diagram of another method for configuring communication resources provided in the present application;

fig. 11 is a schematic diagram of another method for configuring communication resources according to the present application;

fig. 12 is a schematic diagram of another method for configuring communication resources according to the present application;

fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 17 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 18 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 19 is a schematic structural diagram of another communication device according to an embodiment of the present application;

fig. 20 is a schematic structural diagram of another communication device according to an embodiment of the present application.

Detailed Description

The terminology used in the description of the embodiments section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application.

The embodiment of the application can be applied to various types of communication systems. Fig. 1 is a schematic view of an application scenario provided in an embodiment of the present application. The communication system shown in fig. 1 mainly includes a network device 11 and a terminal 12.

Among them, 1) the Network device 11 may be a Network Side device, for example, an Access Point (AP) of a Wireless Local Area Network (WLAN), an Evolved Node B (eNB or eNodeB) of 4G, a base station of next generation communication, such as a New Radio Access Technology (NR) base station (neighbor Node B) or a small station (gbb) of 5G, a micro station, a relay station, an Access Point, a Transmission and Reception Point (TRP), a Road Side Unit (RSU), and the like. In this embodiment, the base stations in the communication systems of different communication systems are different. For the sake of distinction, a base station of the 4G communication system is referred to as an LTE eNB, a base station of the 5G communication system is referred to as an NR gNB, and a base station supporting both the 4G communication system and the 5G communication system is referred to as an evolved Long Term Evolution (LTE) eNB.

2) The terminal 12, also referred to as User Equipment (UE), is a device that provides voice and/or data connectivity to a User, such as a handheld device having wireless connection capability, a vehicle-mounted device, a vehicle having V2V communication capability, and so on. Common terminals include, for example: the mobile phone includes a mobile phone, a tablet computer, a notebook computer, a palm computer, a Mobile Internet Device (MID), and a wearable device such as a smart watch, a smart bracelet, a pedometer, and the like.

3) "plurality" means two or more, and other terms are analogous. "and/or" describes the corresponding relationship of the associated objects, and indicates that three relationships may exist, for example, a and/or B, and may indicate that: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

It should be noted that the number and types of the terminals 12 included in the communication system shown in fig. 1 are merely examples, and the embodiment of the present application is not limited thereto. For example, more terminals 12 communicating with the network device 11 may be included, and are not depicted in the figures one by one for simplicity of description. Furthermore, in the communication system shown in fig. 1, although the network device 11 and the terminal 12 are shown, the communication system may not be limited to include the network device 11 and the terminal 12, and may also include a core network node or a device for carrying a virtualized network function, which is obvious to those skilled in the art and is not described herein again.

In addition, the embodiments of the present application may be applied not only to a 4G wireless communication system represented by Long Term Evolution (LTE), a vehicle-to-outside (V2X) communication system, a Device-to-Device (D2D) communication system, a subsequent Evolution of LTE, and the like, but also to a next generation wireless communication system, i.e., a 5G communication system, and other systems that may appear in the future, such as a wifi network of a next generation, a 5G car networking, and the like.

In the embodiment of the present application, taking a 5G internet of vehicles as an example, as shown in fig. 2, V2V communication can be directly performed between vehicles, and the vehicles can perform V2V communication within the coverage of a network device (e.g., a base station), and also perform V2V communication outside the coverage of the base station. When the vehicles and the vehicles carry out V2V communication in the coverage area of the base station, the base station can be used as a network device to schedule the time-frequency resources for V2V communication between the vehicles and the vehicles, and the V2V sending end sends control messages and data of V2V communication to the V2V receiving end on the scheduled time-frequency resources according to the scheduling information of the base station. As shown in fig. 3, vehicle 31, vehicle 32, and vehicle 33 perform V2V communication within the coverage area of the base station, and vehicle 34 and vehicle 35 perform V2V communication outside the coverage area of the base station. For example, the base station may schedule time-frequency resources for V2V communication between the vehicle 31 and the vehicle 32, and the vehicle 31 transmits control messages and data for V2V communication to the vehicle 32 on the scheduled time-frequency resources according to the scheduling information of the base station.

Current Long Term Evolution (LTE) system based V2V communication includes two communication modes: the first communication mode is based on V2V communication scheduled by the base station, the V2V transmitting end transmits control messages and data of V2V communication to the V2V receiving end on scheduled time-frequency resources according to the scheduling information of the base station; the second communication mode is that the V2V sender selects the time frequency resources for communication among the available time frequency resources contained in the resource set for V2V communication by itself, and sends control messages and data on the selected resources. Therein, the set of resources for V2V communication can be seen as a set of time resources and frequency resources for V2V communication. The base station needs to send indication information to the terminal to indicate the terminal to: a set of time resources for V2V communication and a set of frequency domain resources for V2V communication among all time-frequency resources in the communication system.

Taking the example that the base station indicates to the terminal a set of time resources for V2V communication in all time resources in the communication system, in the LTE communication system, the time resources specifically refer to time slots, the base station sends to the terminal a bitmap (bit map) for indicating a set of time slots for V2V communication in all time slots in the communication system, the bitmap may specifically be a bit sequence, the length of the bit sequence is not limited in this embodiment, each bit in the bit sequence is used to identify whether a time slot in the communication system is available for V2V communication, optionally, if the bit is 1, it indicates that the time slot corresponding to the bit is available for V2V communication, and if the bit is 0, it indicates that the time slot corresponding to the bit is unavailable for V2V communication. For example, the bit sequence includes 8 bits, the 8 bits are 10010001, the 8 bits correspond to 8 slots, for example, the 1 st bit 1 corresponds to slot 0, the 2 nd bit 0 corresponds to slot 1, and so on, the 8 th bit 1 corresponds to slot 7, which indicates that slot 0, slot 3, and slot 7 can be used for V2V communication, and slot 1, slot 2, slot 4, slot 5, and slot 6 cannot be used for V2V communication. Since there are many time slots in the communication system, after receiving the 8-bit bitmap, the terminal can determine not only the time slot for V2V communication in the 8 time slots 0-7, but also periodically repeat the bitmap, which is specifically illustrated in fig. 4, assuming that the time slots 0-N represent all the time slots in the communication system, after the bitmap 10010001 is in one-to-one correspondence with the time slots 0-7, the terminal can also make a one-to-one correspondence between the bitmap 10010001 and the 8 time slots after the time slots 0-7, that is, the time slots 8-15, to determine the time slot for V2V communication in the time slots 8-15, further, make a one-to-one correspondence between the bitmap 10010001 and the 8 time slots after the time slots 8-15, that is, the time slots 16-23, and so on until the bitmap 10010001 is in one-to-one correspondence with the last 8 time slots in the communication system, thereby determining the set of time slots for V2V communication among all time slots in the communication system.

For frequency resources in the Resource set for V2V communication, the base station divides the frequency band for V2V communication into several sub-channels, each sub-channel includes a certain number of Resource Blocks (RBs), one RB occupies one slot in the time domain and 12 sub-carriers in the frequency domain, and the length of one sub-channel and one Resource Block in the time domain may be the same. Therein, the set of resources for V2V communication can be regarded as a set of time resources and frequency resources for V2V communication, and the set of resources for V2V communication is a part of all time-frequency resources in the communication system, that is, a part of all time-frequency resources in the communication system can be used for V2V communication.

As shown in fig. 5, subchannel 1, subchannel 2, and subchannel … … are schematic diagrams of frequency resources in the resource set for V2V communication, and the base station may use the sequence number of the first resource block of the frequency resources in the resource set for V2V communication, for example, the sequence number of the first resource block in subchannel 1, the total number N of subchannels included in the resource set for V2V communication, and the number N of resource blocks included in each subchannel_CHAnd sending the information to the terminal, wherein the terminal can determine the frequency resources which can be used for V2V communication in all the frequency spectrum resources in the communication system according to the information sent by the base station. Optionally, V2V communication occupies one or more sub-channels in the frequency domain and one time slot in the time domain. In the present embodiment, the slot for V2V communication is denoted as a V2V slot or a V2X slot.

In the LTE system, one V2X timeslot includes 14 Orthogonal Frequency Division Multiplexing (OFDM) symbols, as shown in fig. 6, the first OFDM symbol is generally used as an Automatic Gain Control (AGC) for the terminal, and the last symbol is used as a guard interval (gap) and is mainly used for the terminal to perform transceiving conversion and Time Advance (TA) adjustment. Furthermore, in the LTE system, the subcarrier spacing is fixed to 15Khz, the first OFDM symbol duration is 71.9 microseconds, and the last OFDM symbol duration is 66.7 microseconds.

However, in the next generation wireless communication system, i.e., the 5G communication system, the subcarrier spacing is not fixed, and may be, for example, 15kHz, 30kHz, 60kHz, 120kHz, 240kHz, and the larger the subcarrier spacing is, the shorter one OFDM symbol is in the time domain. When the terminal works in a frequency range of 1, namely less than 6GHz, the time for receiving and transmitting conversion is 13 microseconds, and the time for AGC is 15 microseconds; when the terminal works in the frequency range of 2, namely more than 6GHz, the time for transceiving conversion is 7 microseconds, and the time required by AGC is 10 microseconds; therefore, in the 5G communication system, when the subcarrier spacing becomes large, one OFDM symbol becomes short in the time domain, and if the OFDM symbol corresponding to the AGC or guard interval is still fixed to 1 OFDM symbol, the requirement of the terminal may not be satisfied. In order to solve the problem, the present application provides a method for configuring communication resources, which can flexibly configure the number of OFDM symbols corresponding to a guard interval in a timeslot in a 5G communication system, and/or the number of OFDM symbols corresponding to automatic gain control AGC. The method is described below with reference to specific embodiments.

Fig. 7 is a schematic diagram of a method for configuring communication resources according to the present application. As shown in fig. 7, the method for configuring communication resources according to this embodiment includes the following steps:

step S701, the network device sends a control signaling to the first terminal, where the control signaling includes configuration information.

In this embodiment, the network device may specifically be a base station, and the first terminal, the second terminal, and the third terminal may perform sidelink communication (sidelink), where the sidelink communication may specifically be vehicle-to-outside information exchange (V2X) communication, where any two terminals of the first terminal, the second terminal, and the third terminal perform V2V communication, and the sidelink may specifically be a V2X communication link or a V2V communication link. In the 5G communication system, the time resource specifically refers to a time slot, which is equivalent to a time slot in an LTE system, and in this embodiment, a time slot used for sidelink communication is denoted as a sidelink time slot, for example, a time slot used for V2X communication is denoted as a V2X time slot, optionally, a time slot of one sidelink includes 14 OFDM symbols, where a time slot of one sidelink may be a time slot of one designated sidelink in general, and is not limited to a specific time slot of a sidelink. For example, the timeslot of one sidelink may be specifically a timeslot of a sidelink when the sidelink is used for the sidelink communication between any two terminals, or may be a timeslot used for the sidelink communication in any one of the resource sets used for the V2V communication.

In this embodiment, the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink may have multiple configurations, and/or the number of OFDM symbols corresponding to the automatic gain control AGC in the time slot of one sidelink may have multiple configurations.

Taking the number of OFDM symbols corresponding to the guard interval as an example, as shown in fig. 8, the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink may have the following optional configuration modes:

one configuration is as follows: the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink is 0, that is, the time slot does not include the guard interval. Because the guard interval does not carry information, when the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink is 0, the time slot of one sidelink can transmit more information, thereby improving the utilization rate of time-frequency resources.

The other configuration mode is as follows: the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink is 1, that is, in the time slot, the guard interval occupies one OFDM symbol, for example, the last OFDM symbol of the time slot is used as the guard interval. In this case, it is described that configuring one OFDM symbol for the guard interval may not affect normal communication, that is, configuring one OFDM symbol for the guard interval may be performed without affecting normal communication, and if configuring more OFDM symbols for the guard interval, resource utilization may be low.

The other configuration mode is as follows: the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink is 2, that is, in the time slot, the guard interval occupies two OFDM symbols, for example, the 13 th OFDM symbol and the 14 th OFDM symbol of the time slot are used as the guard interval. In this case, it is described that two OFDM symbols are allocated to the guard interval, that is, normal communication may not be affected, that is, two OFDM symbols may be allocated to the guard interval under the condition that normal communication is not affected, and if more OFDM symbols are allocated to the guard interval, resource utilization may be low.

The other configuration mode is as follows: the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink is 3, that is, in the time slot, the guard interval occupies 3 OFDM symbols, for example, the 12 th OFDM symbol, the 13 th OFDM symbol, and the 14 th OFDM symbol of the time slot are taken as the guard interval. In this case, it is described that 3 OFDM symbols are configured for the guard interval, that is, normal communication may not be affected, that is, 3 OFDM symbols may be configured for the guard interval under the condition that normal communication is not affected, and if more OFDM symbols are configured for the guard interval, resource utilization may be low.

In this embodiment, the base station may configure the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink according to the actual situation of the network or the terminal. For example, the first terminal is a V2X transmitting terminal, the third terminal is a V2X receiving terminal, specifically, the first terminal may be a vehicle-mounted device in the vehicle 31 shown in fig. 3, the third terminal may be a vehicle-mounted device in the vehicle 32 shown in fig. 3, and the first terminal and the third terminal are within the coverage of the base station. The sidelink between the first terminal and the third terminal is a V2X unicast link, and if the V2X receiving end has no V2X data or uplink data to be transmitted in the next time slot of the current time slot, the base station may configure the number of OFDM symbols corresponding to the guard interval in the current time slot to be 0. If the V2X receiving end performs V2X transmission in the next slot and the guard interval is mainly used for the V2X receiving end to perform transceiving conversion, the base station may configure the number of OFDM symbols corresponding to the guard interval in the current slot to be 1. If the V2X receiving end performs uplink transmission in the next timeslot and the guard interval is used for the V2X receiving end to perform transceiving conversion and TA, the base station may configure the number of OFDM symbols corresponding to the guard interval in the current timeslot to be 2 or 3. It should be understood that this is only an exemplary illustration, and does not limit the specific number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink, and in other embodiments, more OFDM symbols in the time slot of one sidelink may also be used as the guard interval.

As shown in fig. 9, the number of OFDM symbols corresponding to AGC in a timeslot of a sidelink may have the following optional configuration modes:

one configuration is as follows: the number of OFDM symbols corresponding to AGC in a slot of one sidelink is 0, that is, the slot does not include AGC. In this case, the time slot of one sidelink can transmit more information, thereby improving the time-frequency resource utilization rate.

The other configuration mode is as follows: the number of OFDM symbols corresponding to AGC in a slot of a sidelink is 1, that is, in the slot, the AGC occupies one OFDM symbol, for example, the 1 st OFDM symbol of the slot is used for AGC. In this case, it is described that configuring one OFDM symbol for the AGC may not affect normal communication, that is, configuring one OFDM symbol for the AGC may be performed without affecting normal communication, and if configuring more OFDM symbols for the AGC, resource utilization may be low.

The other configuration mode is as follows: the number of OFDM symbols corresponding to AGC in a slot of one sidelink is 2, that is, in the slot, the AGC occupies two OFDM symbols, for example, the 1 st OFDM symbol and the 2 nd OFDM symbol of the slot are used for AGC. In this case, it is described that two OFDM symbols are allocated to the AGC, that is, normal communication may not be affected, that is, two OFDM symbols are allocated to the AGC without affecting normal communication, and if more OFDM symbols are allocated to the AGC, resource utilization may be low.

The other configuration mode is as follows: the number of OFDM symbols corresponding to the AGC in a slot of one sidelink is 3, that is, in the slot, the AGC occupies 3 OFDM symbols, for example, the 1 st OFDM symbol, the 2 nd OFDM symbol, and the 3 rd OFDM symbol of the slot are used for AGC. In this case, it is described that 3 OFDM symbols are configured for the AGC, that is, normal communication may not be affected, that is, 3 OFDM symbols may be configured for the AGC without affecting normal communication, and if more OFDM symbols are configured for the AGC, resource utilization may be low.

It is to be understood that this is only an exemplary illustration, and does not limit the specific number of OFDM symbols corresponding to AGC in a timeslot of a sidelink, and in other embodiments, more OFDM symbols in a timeslot of a sidelink may also be used for AGC.

In addition, the base station may also reasonably configure the number of OFDM symbols corresponding to the AGC in the time slot of one sidelink according to the actual situation of the network or the terminal, and the specific process is similar to the specific process in which the base station configures the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink according to the data transmission situation of the V2X receiving end in the V2X unicast link, and is not described herein again.

In this embodiment, the base station may indicate the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink and/or the number of OFDM symbols corresponding to AGC in the time slot of one sidelink by sending a control signaling to the first terminal.

Specifically, the base station sends a control signaling to the first terminal, where the control signaling includes configuration information, where the configuration information includes a first identifier and/or a second identifier, and the first identifier is used to indicate the number of OFDM symbols corresponding to a guard interval in a time slot of a sidelink. The first identification may be one or more bits in the configuration information. For example, the first identifier may be two bits in the configuration information, and if the two bits are 00, the number of OFDM symbols corresponding to a guard interval in a time slot of one sidelink is represented as 0; if the two bits are 01, the number of OFDM symbols corresponding to the guard interval in the time slot of one side link is 1; if the two bits are 10, the number of OFDM symbols corresponding to the guard interval in the time slot of one side link is 2; if the two bits are 11, it indicates that the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink is 3. Here, it is only an exemplary illustration, if the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink is greater than 3, more bits in the configuration information may also be used to identify the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink.

Similarly, the second identifier is used to indicate the number of OFDM symbols corresponding to AGC in a timeslot of a sidelink, and the second identifier may also be one or more bits in the configuration information. For example, the second identifier may be two bits in the configuration information, and it is understood that the two bits here and the two bits corresponding to the first identifier are bits at different positions in the configuration information. The method for indicating the number of OFDM symbols corresponding to AGC in a time slot of one sidelink by two bits corresponding to the second identifier is the same as the method for indicating the number of OFDM symbols corresponding to guard interval in a time slot of one sidelink by two bits corresponding to the first identifier, and the specific process is not repeated here.

In another possible implementation manner, the configuration information included in the control signaling may include an identifier, where the identifier is used to indicate the number of OFDM symbols corresponding to the guard interval and the number of OFDM symbols corresponding to the AGC in the time slot of one sidelink at the same time. The identification may be one or more bits in the configuration information. For example, the identifier is two bits in the configuration information, and if the two bits are 00, the number of OFDM symbols corresponding to a guard interval in a time slot of one sidelink and the number of OFDM symbols corresponding to AGC are both 0; if the two bits are 01, the number of OFDM symbols corresponding to the protection interval in the time slot of one side link and the number of OFDM symbols corresponding to AGC are both 1; if the two bits are 10, the number of OFDM symbols corresponding to the guard interval in the time slot of one side link and the number of OFDM symbols corresponding to AGC are both 2; if the two bits are 11, it indicates that the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink and the number of OFDM symbols corresponding to the AGC are both 3. Here, it is only schematically illustrated that, if the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink and the number of OFDM symbols corresponding to the AGC are both greater than 3, more bits in the configuration information may be used to identify the number of OFDM symbols corresponding to the guard interval and the number of OFDM symbols corresponding to the AGC in the time slot of one sidelink.

In addition, the control signaling sent by the base station to the first terminal may have the following possible situations:

one possible scenario is: the Control signaling is Downlink Control Information (DCI). That is to say, the downlink control information DCI includes the configuration information, and the base station may indicate, by sending DCI to the first terminal, the number of OFDM symbols corresponding to a guard interval in a time slot of one sidelink currently scheduled by the base station, and/or the number of OFDM symbols corresponding to AGC in a time slot of one sidelink currently scheduled by the base station. Optionally, the first terminal and the third terminal perform V2X communication, the first terminal is a V2X transmitting terminal, the third terminal is a V2X receiving terminal, and the base station may schedule the time-frequency resources of the V2X communication performed by the first terminal and the third terminal, and dynamically indicate, through DCI, the number of OFDM symbols corresponding to a protection interval in a currently scheduled V2X slot, and/or the number of OFDM symbols corresponding to AGC in a currently scheduled V2X slot. For example, the base station at the current time indicates, through DCI, that the number of OFDM symbols corresponding to the guard interval in the currently scheduled V2X slot is 1, and the base station at the next time indicates, through DCI, that the number of OFDM symbols corresponding to the guard interval in the V2X slot scheduled at the next time is 2.

Another possible scenario is: the Control signaling is a high layer signaling, and the high layer signaling is a Radio Resource Control (RRC) signaling. The base station may indicate the number of OFDM symbols corresponding to the guard interval in each slot of the resource set for V2V communication and/or the number of OFDM symbols corresponding to AGC in each slot of the resource set for V2V communication by sending RRC signaling to the first terminal. For example, the RRC signaling includes configuration information, where the configuration information includes the first identifier and/or the second identifier as described above, and if the first identifier indicates that the number of OFDM symbols corresponding to the guard interval in the slot of one sidelink is m, it indicates that the number of OFDM symbols corresponding to the guard interval in each V2X slot in the resource set used for V2V communication is m. Similarly, if the second flag indicates that the number of OFDM symbols corresponding to AGC in a slot of one sidelink is n, it indicates that the number of OFDM symbols corresponding to AGC in each V2X slot in the resource set for V2V communication is n.

In addition, the base station may indicate that the number of OFDM symbols corresponding to the guard interval is updated in each slot of the resource set for V2V communication and/or that the number of OFDM symbols corresponding to AGC is updated in each slot of the resource set for V2V communication by retransmitting RRC signaling to the first terminal.

For example, the base station sends the RRC signaling to the first terminal again, where the RRC signaling includes configuration information, where the configuration information includes the first identifier and/or the second identifier as described above, and if the first identifier indicates that the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink is j, it indicates that the number of OFDM symbols corresponding to the guard interval in each V2X time slot in the resource set used for V2V communication is updated to be j. Similarly, if the second flag indicates that the number of OFDM symbols corresponding to AGC in a slot of one sidelink is h, it indicates that the number of OFDM symbols corresponding to AGC in each V2X slot in the resource set for V2V communication is updated to h.

Step S702, the first terminal sends the sideline control information and the data to the third terminal.

For example, the first terminal is a V2X sender, the third terminal is a V2X receiver, and after the V2X sender receives the control signaling sent by the base station, the sideline control information and data are sent to the V2X receiver according to the configuration information in the control signaling. Optionally, the sidelink control information may further include the configuration information to indicate the number of OFDM symbols corresponding to the guard interval in the timeslot of one sidelink at the receiving end of V2X, and/or the number of OFDM symbols corresponding to AGC in the timeslot of one sidelink.

If the control signaling received by the V2X sender from the base station is DCI, the V2X sender may include the configuration information in the sidelink control information sent to the V2X receiver to indicate that the V2X receiver: the number of OFDM symbols corresponding to the guard interval in the currently scheduled V2X slot, and/or the number of OFDM symbols corresponding to AGC in the currently scheduled V2X slot. The base station can dynamically indicate the number of the OFDM symbols corresponding to the guard interval in the currently scheduled V2X time slot and/or the number of the OFDM symbols corresponding to the AGC in the currently scheduled V2X time slot by sending DCI to the V2X sending end. If the control signaling received by the V2X sender from the base station is a higher layer signaling, such as RRC signaling, the V2X sender may include the configuration information in the sideline control information sent to the V2X receiver to indicate the V2X receiver: the number of OFDM symbols corresponding to the guard interval in each V2X slot in the set of resources for V2V communication, and/or the number of OFDM symbols corresponding to AGC in each V2X slot in the set of resources for V2V communication. The base station may indicate the number of OFDM symbols corresponding to the guard interval in each slot of the resource set for V2V communication and/or the number of OFDM symbols corresponding to AGC in each slot of the resource set for V2V communication by sending higher layer signaling, such as RRC signaling, to the V2X sender.

In addition, when the transmitting end of V2X and/or the receiving end of V2X are not in the coverage of the base station, the system may pre-configure the resource set for V2V communication, for example, pre-configure the number of OFDM symbols corresponding to the guard interval in each V2X slot of the resource set for V2V communication, and/or pre-configure the number of OFDM symbols corresponding to AGC in each V2X slot of the resource set for V2V communication.

Furthermore, the method described in this embodiment is also applicable to mini-slots, which may comprise a smaller number of OFDM symbols than slots, e.g. the mini-slot comprises 8 OFDM symbols.

In this embodiment, a control signaling is sent to a terminal through a network device, where the control signaling includes configuration information, where the configuration information is used to indicate the number of OFDM symbols corresponding to a guard interval in a timeslot of a sidelink, and/or the configuration information is used to indicate the number of OFDM symbols corresponding to AGC in a timeslot of a sidelink, so that flexible configuration of the number of OFDM symbols corresponding to a guard interval in a timeslot of a sidelink is achieved, and/or flexible configuration of the number of OFDM symbols corresponding to AGC in a timeslot of a sidelink is achieved, so that an OFDM symbol corresponding to AGC or a guard interval is not fixed to 1 OFDM symbol, thereby meeting requirements of a terminal in different communication systems.

As shown in fig. 7, the base station may schedule the time-frequency resources for the V2X communication between the first terminal and the third terminal, and as an alternative, the time-frequency resources for the V2X communication between the first terminal and the third terminal may be scheduled by the second terminal with scheduling capability. The second terminal may be a group leader of a user group, the second terminal may schedule V2X time-frequency resources of other terminals in the user group, or the second terminal may be a Road Side Unit (RSU) of a terminal type, the second terminal may schedule V2X time-frequency resources of nearby terminals. Fig. 10 is a schematic diagram of another method for configuring communication resources according to the present application. As shown in fig. 10, the method for configuring communication resources according to this embodiment includes the following steps:

step 1001, the second terminal sends first sideline control information to the first terminal, and the first sideline control information includes configuration information.

In this embodiment, the second terminal is a terminal with scheduling capability, and the first terminal and the third terminal may be within the coverage of the base station or outside the coverage of the base station. The first terminal and the third terminal are in V2X communication, the first terminal is a V2X transmitting terminal, and the third terminal is a V2X receiving terminal.

The second terminal may receive the configuration information from the base station according to the above embodiment, and the principle that the second terminal receives the configuration information from the base station is consistent with the principle that the first terminal receives the configuration information from the base station according to the above embodiment, and details are not described here.

In addition, the second terminal may also configure the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink and/or the number of OFDM symbols corresponding to the AGC in the time slot of one sidelink, and determine configuration information, where the configuration information is used to indicate the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink and/or the number of OFDM symbols corresponding to the AGC in the time slot of one sidelink.

In this embodiment, the second terminal may schedule the time-frequency resource for V2X communication between the first terminal and the third terminal, specifically, the second terminal sends sidelink control information to the first terminal, where the sidelink control information sent by the second terminal to the first terminal is denoted as first sidelink control information, the first sidelink control information is specifically used for scheduling the time-frequency resource for V2X communication between the first terminal and the third terminal, and the first sidelink control information includes information of the scheduled time-frequency resource, for example, location information of the scheduled time-frequency resource.

In this embodiment, the first sidelink control information further includes the configuration information as described above, that is, the second terminal may indicate the number of OFDM symbols corresponding to the guard interval in the timeslot of one sidelink of the first terminal and/or the number of OFDM symbols corresponding to AGC in the timeslot of one sidelink by transmitting the first sidelink control information including the configuration information to the first terminal.

And step 1002, the first terminal sends second sideline control information and data to the third terminal.

In this embodiment, the first terminal receives the first sidelink control information sent by the second terminal, and determines, according to the first sidelink control information, information of a time-frequency resource for the first terminal and the third terminal to perform V2X communication, and the number of OFDM symbols corresponding to a guard interval in a time slot of one sidelink, and/or the number of OFDM symbols corresponding to AGC in a time slot of one sidelink. Further, the first terminal generates second sideline control information according to the first sideline control information, wherein the information included in the first sideline control information and the information included in the second sideline control information are partially the same and partially different. The same part is that the second sidelink control information also includes information of the scheduled time-frequency resource, e.g. location information of the scheduled time-frequency resource. The different part is that the second side row control information may or may not include the configuration information as described above, and in addition, the first side row control information may or may not include a Modulation and Coding Scheme (MCS), and the second side row control information needs to include the MCS.

Further, the first terminal sends the second sidelink control information and the data to the third terminal, and the first terminal may carry the configuration information in the second sidelink control information, so as to indicate the number of OFDM symbols corresponding to the guard interval in the timeslot of one sidelink of the third terminal, and/or the number of OFDM symbols corresponding to AGC in the timeslot of one sidelink.

In this embodiment, a terminal with scheduling capability sends sideline control information to other terminals, where the sideline control information includes configuration information, where the configuration information is used to indicate the number of OFDM symbols corresponding to a guard interval in a timeslot of a sideline link, and/or the configuration information is used to indicate the number of OFDM symbols corresponding to AGC in a timeslot of a sideline link, so as to implement flexible configuration of the number of OFDM symbols corresponding to a guard interval in a timeslot of a sideline link, and/or flexible configuration of the number of OFDM symbols corresponding to AGC in a timeslot of a sideline link, so that an OFDM symbol corresponding to AGC or a guard interval is not fixed to 1 OFDM symbol, thereby meeting requirements of a terminal in different communication systems.

Fig. 11 is a schematic diagram of another method for configuring communication resources according to the present application. As shown in fig. 11, the method for configuring communication resources according to this embodiment includes the following steps:

step S1101, the network device sends first indication information to the first terminal, where the first indication information is used to indicate a subcarrier interval of the sidelink.

In this embodiment, the system may predefine a mapping relationship between a set of the number of OFDM symbols corresponding to the guard interval and a subcarrier spacing set, and/or predefine a mapping relationship between a set of the number of OFDM symbols corresponding to the automatic gain control AGC and a subcarrier spacing set, where the mapping relationship between the set of the number of OFDM symbols corresponding to the guard interval and the subcarrier spacing set is denoted as a first mapping, and the mapping relationship between the set of the number of OFDM symbols corresponding to the automatic gain control AGC and the subcarrier spacing set is denoted as a second mapping, where the first mapping is shown in table 1 below and the second mapping is shown in table 2 below.

TABLE 1

Subcarrier spacing	Number of OFDM symbols included in guard interval
		15kHz
	1
		30kHz	1
60kHz (frequency range 1)	2
		60kHz (frequency range 2)	1
120kHz	1 or 2
		240kHz	2 or 3

TABLE 2

It is understood that tables 1 and 2 are only schematic illustrations, and do not limit the specific mapping relationship between the subcarrier spacing and the number of OFDM symbols included in the AGC, nor the specific mapping relationship between the subcarrier spacing and the number of OFDM symbols included in the guard interval. In some embodiments, the corresponding mapping relationship may be established only for certain subcarrier spacings, e.g., 30kHz, 60kHz, 120 kHz.

In this embodiment, the base station may be a base station as shown in fig. 3, the first terminal may be a vehicle-mounted device of the vehicle 31 as shown in fig. 3, the third terminal may be a vehicle-mounted device in the vehicle 32 as shown in fig. 3, the first terminal is a V2X transmitting end, the third terminal is a V2X receiving end, and the first terminal and the third terminal are within the coverage of the base station.

The first mapping and/or the second mapping are predefined by the system, and the base station can locally store the first mapping and/or the second mapping in advance, when the base station needs to indicate the number of OFDM symbols corresponding to a guard interval in a time slot of a sidelink of the first terminal; and/or when the base station needs to indicate the number of OFDM symbols corresponding to automatic gain control AGC in a time slot of a sidelink of the first terminal, the base station determines first indication information according to a first mapping and/or a second mapping, and sends the first indication information to the first terminal, where the first indication information is used to indicate a subcarrier interval of the sidelink, and the sidelink may be a link for sidelink communication between the first terminal and a third terminal, where the subcarrier interval belongs to a subcarrier interval set in the first mapping, and/or the subcarrier interval belongs to a subcarrier interval set in the second mapping.

For example, when the base station needs to indicate that the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink of the first terminal is 2 or 3, and/or when the base station needs to indicate that the number of OFDM symbols corresponding to the AGC in the time slot of one sidelink of the first terminal is 2 or 3, the base station sends first indication information to the first terminal, wherein the first indication information is used for indicating that the subcarrier interval of the sidelink is 240 kHz.

Step S1102, the first terminal determines the number of OFDM symbols corresponding to a guard interval in a time slot of a sidelink according to a first mapping and the subcarrier interval; and/or the first terminal determines the number of OFDM symbols corresponding to the automatic gain control AGC in the time slot of one side link according to the second mapping and the subcarrier interval.

When the first terminal receives the first indication information, according to the subcarrier interval of the sidelink indicated by the first indication information, for example, 240kHz, the first mapping stored locally is queried, and it is determined that the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink is 2 or 3. And/or the first terminal queries a locally stored second mapping according to the subcarrier interval of the sidelink, for example, 240kHz, indicated by the first indication information, and determines that the number of OFDM symbols corresponding to AGC in a timeslot of a sidelink is 2 or 3. In some embodiments, the first terminal may further send the sidelink control information and data to the third terminal according to the number of OFDM symbols corresponding to the guard interval in the time slot of one sidelink and/or the number of OFDM symbols corresponding to the AGC in the time slot of one sidelink.

In this embodiment, the first mapping and/or the second mapping locally stored by the first terminal may be predefined by the system, or may be sent to the first terminal by the base station before the base station sends the first indication information to the first terminal, for example, the base station sends the second indication information to the first terminal before sending the first indication information to the first terminal, and the second indication information includes the first mapping, and/or the second mapping.

In the embodiment of the application, a terminal receives first indication information, where the first indication information is used to indicate a subcarrier interval of a sidelink, the terminal locally stores a mapping relationship between a set of numbers of OFDM symbols corresponding to a guard interval and a subcarrier interval set and/or a mapping relationship between a set of numbers of OFDM symbols corresponding to an automatic gain control AGC and a subcarrier interval set, and the terminal determines, according to the subcarrier interval of the sidelink and a corresponding mapping relationship, the number of OFDM symbols occupied by the guard interval corresponding to the subcarrier interval and/or the number of OFDM symbols occupied by the AGC corresponding to the subcarrier interval, thereby implementing flexible configuration of the number of OFDM symbols corresponding to the guard interval in a time slot of a sidelink and/or flexible configuration of the number of OFDM symbols corresponding to the AGC in a time slot of a sidelink, OFDM symbols corresponding to AGC or guard intervals are not fixed to be 1 OFDM symbol, and therefore the requirements of the terminal in different communication systems are met.

Fig. 12 is a schematic diagram of another method for configuring communication resources according to the present application. As shown in fig. 12, the method for configuring communication resources according to this embodiment includes the following steps:

step S1201, the second terminal sends first indication information to the first terminal, where the first indication information is used to indicate a subcarrier interval of the sidelink.

In this embodiment, the second terminal may be a terminal with scheduling capability, and the second terminal may schedule time-frequency resources for V2V communication between the first terminal and the third terminal. The second terminal may locally pre-store a first mapping and/or a second mapping as described above, which are predefined by the system.

When the second terminal needs to indicate the number of OFDM symbols corresponding to the protection interval in the time slot of one side link of the first terminal; and/or when the second terminal needs to indicate the number of OFDM symbols corresponding to the automatic gain control AGC in a timeslot of a sidelink of the first terminal, the second terminal determines first indication information according to the first mapping and/or the second mapping, and sends the first indication information to the first terminal, where the first indication information is used to indicate a subcarrier interval of the sidelink, where the sidelink may be a link for sidelink communication between the first terminal and a third terminal, where the subcarrier interval belongs to a set of subcarrier intervals in the first mapping, and/or the subcarrier interval belongs to a set of subcarrier intervals in the second mapping.

For example, when the second terminal needs to indicate that the number of OFDM symbols corresponding to the guard interval in the timeslot of the sidelink of the first terminal is 2 or 3, and/or when the base station needs to indicate that the number of OFDM symbols corresponding to the AGC in the timeslot of the sidelink of the first terminal is 2 or 3, the second terminal sends first indication information to the first terminal, where the first indication information is used to indicate that the subcarrier interval of the sidelink is 240 kHz.

Step S1202, the first terminal determines the number of OFDM symbols corresponding to a guard interval in a time slot of a side link according to a first mapping and the subcarrier interval; and/or the first terminal determines the number of OFDM symbols corresponding to the automatic gain control AGC in the time slot of one side link according to the second mapping and the subcarrier interval.

In this embodiment, the first mapping and/or the second mapping stored locally by the first terminal may be predefined by the system, or may be sent to the first terminal by the second terminal before the second terminal sends the first indication information to the first terminal, for example, the second terminal sends the second indication information to the first terminal before sending the first indication information to the first terminal, and the second indication information includes the first mapping and/or the second mapping.

It is to be understood that some or all of the steps or operations in the above-described embodiments are merely examples, and other operations or variations of various operations may be performed by the embodiments of the present application. Further, the various steps may be performed in a different order presented in the above-described embodiments, and it is possible that not all of the operations in the above-described embodiments are performed.

It is to be understood that, in the above embodiments, operations or steps implemented by the terminal (e.g., the first terminal, the second terminal, the third terminal) may also be implemented by a component (e.g., a chip or a circuit) available for the terminal, and operations or steps implemented by the network device may also be implemented by a component (e.g., a chip or a circuit) available for the network device.

Fig. 13 is a schematic diagram of a communication apparatus. The communication apparatus may be configured to implement the method of the corresponding part of the network device described in the above method embodiment, or the method of the corresponding part of the terminal, for example, the first terminal and the second terminal, for specific reference to the description in the above method embodiment.

The communication device 130 may include one or more processors 131, and the processors 131 may also be referred to as processing units and may implement certain control functions. The processor 131 may be a general-purpose processor or a special-purpose processor, etc.

In an alternative design, the processor 131 may also store instructions 133, which may be executed by the processor, so that the communication apparatus 130 executes the method corresponding to the terminal or the network device described in the above method embodiment.

In yet another possible design, the communication device 130 may include circuitry that may implement the functionality of transmitting or receiving or communicating in the foregoing method embodiments.

Optionally, the communication device 130 may include one or more memories 132, on which instructions 134 or intermediate data are stored, and the instructions 134 may be executed on the processor, so that the communication device 130 performs the method described in the above method embodiments. Optionally, other related data may also be stored in the memory. Optionally, instructions and/or data may also be stored in the processor. The processor and the memory may be provided separately or may be integrated together.

Optionally, the communication device 130 may further include a transceiver 135.

The processor 131 may be referred to as a processing unit. The transceiver 135 may be referred to as a transceiver unit, a transceiver, a transceiving circuit, a transceiver, or the like, and is used for implementing transceiving functions of a communication device.

If the communications apparatus is configured to implement the operation corresponding to the network device in the embodiment shown in fig. 7, for example, the processor is configured to determine configuration information, where the configuration information is used to indicate the number of OFDM symbols corresponding to the guard interval in the timeslot of one sidelink, and/or the configuration information is used to indicate the number of OFDM symbols corresponding to the AGC in the timeslot of one sidelink; the transceiver is configured to send a control signaling to the first terminal, where the control signaling includes the configuration information. The transceiver may further perform other corresponding communication functions. And the processor is used for completing corresponding determination or control operation, and optionally, corresponding instructions can be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

If the communication apparatus is used to implement the operation corresponding to the first terminal in fig. 7, for example, the control signaling may be received by the transceiver from the network device, and the control signaling includes the configuration information. The transceiver may further perform other corresponding communication functions. And the processor is used for completing corresponding determination or control operation, and optionally, corresponding instructions can be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

If the communication device is used to implement operations corresponding to the third terminal in fig. 7, for example, the sidelink control information and data may be received by the transceiver from the first terminal. The transceiver may further perform other corresponding communication functions. And the processor is used for completing corresponding determination or control operation, and optionally, corresponding instructions can be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

If the communication apparatus is configured to implement the operation corresponding to the second terminal in the embodiment shown in fig. 10, the processor is configured to determine configuration information, where the configuration information is used to indicate the number of orthogonal frequency division multiplexing OFDM symbols corresponding to a guard interval in a timeslot of one sidelink, and/or the configuration information is used to indicate the number of OFDM symbols corresponding to an automatic gain control AGC in a timeslot of one sidelink, and the transceiver is configured to send a control signaling to the first terminal, where the control signaling includes the configuration information. Optionally, the transceiver may be further configured to perform other related communication operations, and the processor may be further configured to perform other corresponding determining or controlling operations, such as determining information of the at least one cell. Optionally, corresponding instructions may also be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

If the communication device is configured to perform operations corresponding to the first terminal in the embodiment shown in fig. 10, the transceiver is configured to receive first sidelink control information from the second terminal, the first sidelink control information including configuration information. Optionally, the transceiver may be further configured to perform other related communication operations, and the processor may be further configured to perform other corresponding determination or control operations. Optionally, corresponding instructions may also be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

The transceiver is configured to receive second sidelink control information and data from the first terminal if the communication device is configured to perform operations corresponding to the third terminal in the embodiment shown in fig. 10. Optionally, the transceiver may be further configured to perform other related communication operations, and the processor may be further configured to perform other corresponding determination or control operations. Optionally, corresponding instructions may also be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

If the communication apparatus is configured to implement the operation corresponding to the network device in the embodiment shown in fig. 11, the processor is configured to determine first indication information according to the first mapping and/or the second mapping, where the first indication information is used to indicate a subcarrier spacing of a sidelink; the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to Automatic Gain Control (AGC) and a subcarrier interval set, and the subcarrier interval belongs to the subcarrier interval set; the transceiver is configured to transmit first indication information to the first terminal, where the first indication information indicates a subcarrier spacing of a sidelink. Optionally, the transceiver may be further configured to perform other related communication operations, and the processor may be further configured to perform other corresponding determining or controlling operations, such as determining information of the at least one cell. Optionally, corresponding instructions may also be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

If the communication apparatus is configured to implement the operation corresponding to the first terminal in the embodiment shown in fig. 11, the transceiver is configured to receive first indication information from the network device, where the first indication information is used to indicate a subcarrier spacing of the sidelink. Optionally, the transceiver may be further configured to perform other related communication operations, and the processor may be further configured to perform other corresponding determining or controlling operations, such as determining information of the at least one cell. Optionally, corresponding instructions may also be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

If the communication device is used to implement operations corresponding to the third terminal in the embodiment shown in fig. 11, the transceiver is used to receive sidelink control information and data from the first terminal. Optionally, the transceiver may be further configured to perform other related communication operations, and the processor may be further configured to perform other corresponding determining or controlling operations, such as determining information of the at least one cell. Optionally, corresponding instructions may also be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

If the communication device is configured to implement operations corresponding to the second terminal in the embodiment shown in fig. 12, the processor is configured to determine first indication information according to the first mapping and/or the second mapping, where the first indication information is used to indicate a subcarrier spacing of a sidelink; the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to Automatic Gain Control (AGC) and a subcarrier interval set, and the subcarrier interval belongs to the subcarrier interval set; the transceiver is configured to transmit first indication information to the first terminal, where the first indication information indicates a subcarrier spacing of a sidelink. Optionally, the transceiver may be further configured to perform other related communication operations, and the processor may be further configured to perform other corresponding determining or controlling operations, such as determining information of the at least one cell. Optionally, corresponding instructions may also be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

If the communication device is configured to implement operations corresponding to the first terminal in the embodiment shown in fig. 12, the transceiver is configured to receive first indication information from the second terminal, where the first indication information is used to indicate a subcarrier spacing of the sidelink. Optionally, the transceiver may be further configured to perform other related communication operations, and the processor may be further configured to perform other corresponding determining or controlling operations, such as determining information of the at least one cell. Optionally, corresponding instructions may also be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

The transceiver is configured to receive sidelink control information and data from the first terminal if the communication device is configured to perform operations corresponding to the third terminal in the embodiment shown in fig. 12. Optionally, the transceiver may be further configured to perform other related communication operations, and the processor may be further configured to perform other corresponding determining or controlling operations, such as determining information of the at least one cell. Optionally, corresponding instructions may also be stored in the memory. The specific processing manner of each component can be referred to the related description of the previous embodiment.

The processors and transceivers described herein may be implemented on Integrated Circuits (ICs), analog ICs, Radio Frequency Integrated Circuits (RFICs), mixed signal ICs, Application Specific Integrated Circuits (ASICs), Printed Circuit Boards (PCBs), electronic devices, and the like. The processor and transceiver may also be fabricated using various 1C process technologies, such as Complementary Metal Oxide Semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), Bipolar Junction Transistor (BJT), Bipolar CMOS (bicmos), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.

Alternatively, the communication device may be a stand-alone device or may be part of a larger device. For example, the device may be:

(1) a stand-alone integrated circuit IC, or chip, or system-on-chip or subsystem;

(2) a set of one or more ICs, which optionally may also include storage components for storing data and/or instructions;

(3) an ASIC, such as a modem (MSM);

(4) a module that may be embedded within other devices;

(5) receivers, terminals, cellular telephones, wireless devices, handsets, mobile units, network devices, and the like;

(6) others, and so forth.

Fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application. As shown in fig. 14, the communication device 140 includes: a processing module 141 and a sending module 142; the processing module 141 is configured to determine configuration information, where the configuration information is used to indicate the number of OFDM symbols corresponding to a guard interval in a time slot of a sidelink, and/or the configuration information is used to indicate the number of OFDM symbols corresponding to an automatic gain control AGC in a time slot of a sidelink; the sending module 142 is configured to send a control signaling to the first terminal, where the control signaling includes the configuration information.

In a possible manner, the control signaling is downlink control information DCI.

In another possible manner, the control signaling is a higher layer signaling.

Optionally, the high layer signaling is radio resource control RRC signaling.

The communication apparatus of the embodiment shown in fig. 14 may be used to implement the technical solution of the above method embodiment, and the implementation principle and the technical effect of the technical solution may further refer to the relevant description in the method embodiment, and optionally, the communication apparatus may be a network device, and may also be a component (e.g., a chip or a circuit) of the network device. When the communication apparatus is a network device, the processing module 141 may be a processor, and the transmitting module 142 may be a transceiver. When the communication apparatus is a component of a network device, the processing module 141 may be a processing element having a signal processing function, and the transmitting module 142 may be a circuit having a transmitting function.

Fig. 15 is a schematic structural diagram of another communication device according to an embodiment of the present application. As shown in fig. 15, the communication device 150 includes: a processing module 151 and a sending module 152; the processing module 151 is configured to determine configuration information, where the configuration information is used to indicate the number of orthogonal frequency division multiplexing OFDM symbols corresponding to a guard interval in a time slot of one sidelink, and/or the configuration information is used to indicate the number of OFDM symbols corresponding to an automatic gain control AGC in the time slot of one sidelink; the sending module 152 is configured to send a control signaling to the first terminal, where the control signaling includes the configuration information.

In a possible manner, the control signaling is first sidelink control information.

The communication device of the embodiment shown in fig. 15 may be used to implement the technical solution of the above method embodiment, and the implementation principle and technical effect of the technical solution may further refer to the relevant description in the method embodiment, and optionally, the communication device may be the second terminal, and may also be a component (e.g., a chip or a circuit) of the second terminal. When the communication device is a second terminal, the processing module 151 may be a processor, and the transmitting module 152 may be a transceiver. When the communication device is a component of the second terminal, the processing module 151 may be a processing element having a signal processing function, and the transmitting module 152 may be a circuit having a transmitting function.

Fig. 16 is a schematic structural diagram of another communication device according to an embodiment of the present application. As shown in fig. 16, the communication device 160 includes: a receiving module 161 and a transmitting module 162; the receiving module 161 is configured to receive a control signaling, where the control signaling includes configuration information, where the configuration information is used to indicate the number of orthogonal frequency division multiplexing OFDM symbols corresponding to a guard interval in a time slot of one sidelink, and/or the configuration information is used to indicate the number of OFDM symbols corresponding to an automatic gain control AGC in a time slot of one sidelink; the sending module 162 is configured to send information to the third terminal according to the configuration information.

In fig. 16, further, the receiving module 161 is specifically configured to: receiving the control signaling from a network device.

In another possible manner, the control signaling is a higher layer signaling.

Optionally, the high layer signaling is radio resource control RRC signaling.

In fig. 16, further, the receiving module 161 is specifically configured to: first sideline control information is received from the second terminal.

Optionally, the information includes second side row control information and data; the second sideline control information comprises the configuration information.

The communication device in the embodiment shown in fig. 16 may be configured to execute the technical solution of the above-mentioned method embodiment, and further refer to the corresponding description in the method embodiment, which is not described herein again, and optionally, the communication device may be the first terminal, or may be a component (e.g., a chip or a circuit) of the first terminal. When the communication device is a first terminal, the receiving module 161 and the transmitting module 162 may be transceivers. When the communication apparatus is a component of the first terminal, the receiving module 161 and the transmitting module 162 may be circuits having a transceiving function.

Fig. 17 is a schematic structural diagram of another communication device according to an embodiment of the present application. As shown in fig. 17, the communication device 170 includes: a receiving module 171 and a processing module 172; the receiving module 171 is configured to receive first indication information, where the first indication information is used to indicate a subcarrier spacing of a sidelink; the processing module 172 is configured to determine, according to the first mapping and the subcarrier spacing, the number of OFDM symbols corresponding to a guard interval in a time slot of one sidelink; and/or determining the number of OFDM symbols corresponding to the automatic gain control AGC in the time slot of one side link according to the second mapping and the subcarrier interval; the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to automatic gain control AGC and a subcarrier interval set, the number of OFDM symbols corresponding to the guard interval in a time slot of one sidelink belongs to the set of the number of OFDM symbols corresponding to the guard interval, the number of OFDM symbols corresponding to the automatic gain control AGC in the time slot of one sidelink belongs to the set of the number of OFDM symbols corresponding to the automatic gain control AGC, and the subcarrier interval belongs to the subcarrier interval set.

In fig. 17, further, the first and second mappings are predefined.

The communication apparatus in the embodiment shown in fig. 17 may be used to execute the technical solution of the above method embodiment, and its implementation principle and technical effect are similar, and are not described herein again, and the communication apparatus may be the first terminal, and may also be a component (e.g., a chip or a circuit) of the first terminal. If the communication device is a first terminal, the receiving module 171 may be a transceiver and the processing module 172 may be a processor. If the communication device is a component of the first terminal, the receiving module 171 may be a circuit having a receiving function, and the processing module 172 may be a processing element having a signal processing function.

Fig. 18 is a schematic structural diagram of another communication device according to an embodiment of the present application. As shown in fig. 18, the communication device 180 includes: a processing module 181 and a transmitting module 182; the processing module 181 is configured to determine first indication information according to a first mapping and/or a second mapping, where the first indication information is used to indicate a subcarrier spacing of a sidelink; the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to Automatic Gain Control (AGC) and a subcarrier interval set, and the subcarrier interval belongs to the subcarrier interval set; the sending module 182 is configured to send the first indication information to the first terminal.

In fig. 18, further, the sending module 182 is further configured to: sending second indication information before sending the first indication information to the first terminal, wherein the second indication information comprises the first mapping and/or the second mapping.

The communication apparatus in the embodiment shown in fig. 18 may be used to execute the technical solution of the above method embodiment, and its implementation principle and technical effect are similar, and are not described herein again, and the communication apparatus may be a network device or a second terminal, and may also be a component (e.g., a chip or a circuit) of the network device or the second terminal. If the communication device is a network device or a second terminal, the processing module 181 may be a processor and the transmitting module 182 may be a transceiver. If the communication apparatus is a network device or a component of a second terminal, the processing module 181 may be a processing element having a signal processing function, and the transmitting module 182 may be a circuit having a receiving function.

It should be understood that the division of the modules of the communication device shown in fig. 14 to 18 is merely a logical division, and the actual implementation may be wholly or partially integrated into one physical entity or may be physically separated. And these modules can be realized in the form of software called by processing element; or may be implemented entirely in hardware; and part of the modules can be realized in the form of calling by the processing element in software, and part of the modules can be realized in the form of hardware. For example, the processing module may be a processing element that is set up separately, or may be implemented by being integrated in a chip of the communication apparatus, such as a terminal, or may be stored in a memory of the communication apparatus in the form of a program, and the processing element of the communication apparatus calls and executes the functions of the above modules. Other modules are implemented similarly. In addition, all or part of the modules can be integrated together or can be independently realized. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.

For example, the above modules may be one or more integrated circuits configured to implement the above methods, such as: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. As another example, when one of the above modules is implemented in the form of a Processing element scheduler, the Processing element may be a general purpose processor, such as a Central Processing Unit (CPU) or other processor capable of invoking programs. As another example, these modules may be integrated together, implemented in the form of a system-on-a-chip (SOC).

Fig. 19 is a schematic structural diagram of another communication device according to an embodiment of the present application. The communication device may specifically be a base station, as shown in fig. 19, where the base station includes: antenna 191, radio frequency device 192, baseband device 193. Antenna 191 is connected to rf device 192. In the uplink direction, rf device 192 receives information transmitted from the terminal through antenna 191, and transmits the information to baseband device 193 for processing. In the downlink direction, the baseband device 193 processes the information of the terminal and transmits the processed information to the rf device 192, and the rf device 192 processes the information of the terminal and transmits the processed information to the terminal through the antenna 191.

The above communication means may be located in the baseband device 193, and in one implementation, the above modules are implemented in the form of a processing element scheduler, for example, the baseband device 193 includes a processing element and a storage element, and the processing element 1931 calls a program stored in the storage element 1932 to execute the method in the above method embodiment. The baseband device 193 may further include an interface 1933 for exchanging information with the rf device 192, such as a Common Public Radio Interface (CPRI).

In another implementation, the above modules may be one or more processing elements configured to implement the above methods, which are disposed on the baseband device 193, where the processing elements may be integrated circuits, such as: one or more ASICs, or one or more DSPs, or one or more FPGAs, etc. These integrated circuits may be integrated together to form a chip.

For example, the above modules may be integrated together and implemented in the form of a system-on-a-chip (SOC), for example, the baseband device 193 includes an SOC chip for implementing the above method. The chip may integrate a processing element 1931 and a storage element 1932, and the processing element 1931 calls a form of a program stored in the storage element 1932 to implement the above method or the functions of the above modules; or, at least one integrated circuit may be integrated in the chip, so as to implement the functions of the above method or the above modules; or, the above implementation modes may be combined, the functions of some modules are implemented in the form of a processing element calling program, and the functions of some modules are implemented in the form of an integrated circuit.

In any case, the above communication device comprises at least one processing element, a storage element and a communication interface, wherein the at least one processing element is configured to perform the method provided by the above method embodiments. The processing element may: i.e. the way the program stored by the storage element is executed, performs part or all of the steps in the above method embodiments; it is also possible to: that is, some or all of the steps in the above method embodiments are performed by integrated logic circuits of hardware in the processing element in combination with instructions; of course, the method provided by the above method embodiment can also be executed in combination with the first manner and the second manner.

The Processing element may be a general-purpose processor, such as a Central Processing Unit (CPU), or one or more integrated circuits configured to implement the above methods, as described above, for example: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others. The storage element may be a memory or a combination of a plurality of storage elements.

Fig. 20 is a schematic structural diagram of another communication device according to an embodiment of the present application. As shown in fig. 20, the communication apparatus 200 includes: the processor 202 and the transceiver 203, the processor 202 is configured to determine configuration information, where the configuration information is used to indicate the number of Orthogonal Frequency Division Multiplexing (OFDM) symbols corresponding to a guard interval in a time slot of one sidelink, and/or the configuration information is used to indicate the number of OFDM symbols corresponding to an Automatic Gain Control (AGC) in the time slot of one sidelink; the transceiving means 203 is configured to send a control signaling to the first terminal, where the control signaling includes the configuration information.

Or, the transceiver 203 is configured to receive a control signaling, where the control signaling includes configuration information, where the configuration information is used to indicate the number of OFDM symbols corresponding to a guard interval in a time slot of a sidelink, and/or the configuration information is used to indicate the number of OFDM symbols corresponding to an automatic gain control AGC in a time slot of a sidelink; and sending information to a third terminal according to the configuration information.

Or, the transceiver 203 is configured to receive first indication information, where the first indication information is used to indicate a subcarrier spacing of a sidelink; the processor 202 is configured to determine, according to the first mapping and the subcarrier spacing, the number of OFDM symbols corresponding to a guard interval in a time slot of one sidelink; and/or determining the number of OFDM symbols corresponding to the automatic gain control AGC in the time slot of one side link according to the second mapping and the subcarrier interval.

Further, a memory 201 is included for storing computer programs or instructions, which the processor 202 is configured to call.

The communication device in the embodiment shown in fig. 20 may be configured to execute the technical solution of the above method embodiment, and further refer to the relevant description in the method embodiment, which is not described herein again, where the communication device may be a terminal, or may be a component (e.g., a chip or a circuit) of the terminal.

In fig. 20, the transceiver 203 may be connected to an antenna. In the downlink direction, the transceiver 203 receives information transmitted by the base station via the antenna and sends the information to the processor 202 for processing. In the uplink direction, the processor 202 processes the data of the terminal and transmits the processed data to the base station through the transceiver 203.

Alternatively, the processor 202 may be configured to implement corresponding functions in the processing module of the communication device shown in fig. 15, 17, and 18, and the transceiver may be configured to implement corresponding functions of the receiving module or the transmitting module of the communication device shown in fig. 15-18. Alternatively, part or all of the above modules may be implemented by being embedded in a chip of the terminal in the form of an integrated circuit. And they may be implemented separately or integrated together. That is, the above modules may be configured as one or more integrated circuits implementing the above methods, for example: one or more Application Specific Integrated Circuits (ASICs), or one or more microprocessors (DSPs), or one or more Field Programmable Gate Arrays (FPGAs), among others.

Embodiments of the present application further provide a computer-readable storage medium, in which a computer program is stored, and when the computer program runs on a computer, the computer is caused to execute the communication method described in the above embodiments.

In addition, the present application also provides a computer program product, which includes a computer program that, when running on a computer, causes the computer to execute the communication method described in the above embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the procedures or functions described in accordance with the present application are generated, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, digital subscriber line) or wirelessly (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk), among others.

Claims

1. A method for configuring communication resources, comprising:

a first terminal receives first indication information, wherein the first indication information is used for indicating a subcarrier interval of a side uplink;

the first terminal determines the number of OFDM symbols corresponding to a guard interval in a time slot of a side link according to the first mapping and the subcarrier interval; and/or

The first terminal determines the number of OFDM symbols corresponding to automatic gain control AGC in a time slot of a side link according to the second mapping and the subcarrier interval;

the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to automatic gain control AGC and a subcarrier interval set, the number of OFDM symbols corresponding to the guard interval in a time slot of one sidelink belongs to the set of the number of OFDM symbols corresponding to the guard interval, the number of OFDM symbols corresponding to the automatic gain control AGC in the time slot of one sidelink belongs to the set of the number of OFDM symbols corresponding to the automatic gain control AGC, and the subcarrier interval belongs to the subcarrier interval set.

2. The method of claim 1, wherein the first mapping and the second mapping are predefined.

3. A method for configuring communication resources, comprising:

the second terminal determines first indication information according to the first mapping and/or the second mapping, wherein the first indication information is used for indicating the subcarrier spacing of the side uplink; the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to Automatic Gain Control (AGC) and a subcarrier interval set, and the subcarrier interval belongs to the subcarrier interval set;

and the second terminal sends the first indication information to the first terminal.

4. The method of claim 3, wherein before the second terminal sends the first indication information to the first terminal, the method further comprises:

and the second terminal sends second indication information, wherein the second indication information comprises the first mapping and/or the second mapping.

5. A method for configuring communication resources, comprising:

the network equipment determines first indication information according to the first mapping and/or the second mapping, wherein the first indication information is used for indicating the subcarrier spacing of the side link; the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to Automatic Gain Control (AGC) and a subcarrier interval set, and the subcarrier interval belongs to the subcarrier interval set;

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

6. The method of claim 5, wherein before the network device sends the first indication information to the first terminal, the method further comprises:

the network device sends second indication information, wherein the second indication information comprises the first mapping and/or the second mapping.

7. A communications apparatus, comprising:

a receiving module, configured to receive first indication information, where the first indication information is used to indicate a subcarrier interval of a sidelink;

a processing module, configured to determine, according to the first mapping and the subcarrier spacing, the number of OFDM symbols corresponding to a guard interval in a time slot of a sidelink; and/or determining the number of OFDM symbols corresponding to the automatic gain control AGC in the time slot of one side link according to the second mapping and the subcarrier interval;

8. The communications apparatus of claim 7, wherein the first mapping and second mapping are predefined.

9. A communications apparatus, comprising:

the processing module is used for determining first indication information according to the first mapping and/or the second mapping, wherein the first indication information is used for indicating the subcarrier spacing of the side link; the first mapping is a mapping relation between a set of the number of OFDM symbols corresponding to a guard interval and a subcarrier interval set, the second mapping is a mapping relation between a set of the number of OFDM symbols corresponding to Automatic Gain Control (AGC) and a subcarrier interval set, and the subcarrier interval belongs to the subcarrier interval set;

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

10. The communications apparatus of claim 9, wherein the sending module is further configured to: sending second indication information before sending the first indication information to the first terminal, wherein the second indication information comprises the first mapping and/or the second mapping.

11. A communication device, comprising:

an interface and a processor, the interface and the processor coupled;

the processor is configured to perform the method of any one of claims 1-6.

12. A computer-readable storage medium, in which a computer program is stored which, when run on a computer, causes the computer to carry out the method according to any one of claims 1 to 6.