WO2020063477A1

WO2020063477A1 - V2x communication method and device, computer readable storage medium

Info

Publication number: WO2020063477A1
Application number: PCT/CN2019/107025
Authority: WO
Inventors: 黄双红; 卢有雄; 陈杰
Original assignee: 中兴通讯股份有限公司
Priority date: 2018-09-28
Filing date: 2019-09-20
Publication date: 2020-04-02
Also published as: CN110536261A; CN110536261B

Abstract

Provided in the present application are a V2X communication method and device, and a computer readable storage medium. The method comprises: a first terminal sends an NR-sidelink synchronisation signal (NR-SLSS) and/or an NR-physical sidelink broadcast channel (NR-PSBCH), the NR-PSBCH containing first enabling indication information; and sends a first indication channel. Conditions of sending the first indication channel comprise: signaling indication and/or satisfying a decision condition.

Description

V2X communication method and device, computer-readable storage medium

Technical field

The embodiments of the present disclosure relate to but not limited to the field of 5G NR (New Radio) wireless communication technology.

Background technique

In the existing LTE (Long Term Evolution) V2X (Everything) technology, the UL-DL (Uplink-Downlink) configuration information of the TDD (Time Division Duplex) system is broadcast on the Physical Side Link Broadcast Channel (PSBCH). Channel) bearer transmission, used to indicate the UL-DL configuration used by the sending UE (User Equipment) in sidelink communication. The receiving UE obtains the UL-DL configuration of the transmitting UE by detecting SLSS (Sidelink Synchronisation Signal) / PSBCH, so as to correctly demodulate the received sidelink service data.

In NR V2X, when sidelink communication is performed between the UE within the coverage and the UE outside the coverage, the UE outside the coverage needs to know the Uplink / Downlink TDD configuration information of the UE within the coverage. The signaling overhead of the Uplink / Downlink / TDD configuration in NR is relatively large, and it is not suitable for carrying in the PSBCH. Furthermore, the Uplink / Downlink TDD configuration in the NR includes Cell-specific and UE-specific configuration information. Obviously, the UE-specific configuration information is not suitable to be indicated in the PSBCH.

Summary of the Invention

In one aspect, an embodiment of the present disclosure provides a V2X communication method. The method includes: a first terminal sending an NR-side link synchronization signal NR-SLSS and / or an NR-physical side link broadcast channel NR-PSBCH, and The NR-PSBCH includes first enabling indication information; the first terminal sends a first indication channel; wherein the conditions for sending the first indication channel include: a signaling indication and / or a decision condition is satisfied.

On the other hand, an embodiment of the present disclosure also provides a V2X communication method. The method includes: a second terminal detecting an NR-side link synchronization signal NR-SLSS or an NR-physical side link broadcast channel NR-PSBCH; Said second terminal demodulating said NR-PSBCH to obtain first enabling instruction information; said second terminal obtaining first control information or indication information of a first control channel based on said first enabling instruction information; said The second terminal demodulates a first indication channel according to the first control information; or demodulates the first control channel according to the indication information of the first control channel, and demodulates the first indication channel.

On the other hand, an embodiment of the present disclosure further provides a communication device, including: a sending module configured to send an NR-side link synchronization signal NR-SLSS and / or an NR-physical side link broadcast channel NR-PSBCH, and The NR-PSBCH includes first enabling indication information; and sending a first indication channel; wherein the conditions for sending the first indication channel include: a signaling indication and / or a decision condition is satisfied.

On the other hand, an embodiment of the present disclosure further provides a communication device including: a detection module configured to detect an NR-side link synchronization signal NR-SLSS or an NR-physical side link broadcast channel NR-PSBCH; a demodulation module Is configured to demodulate the NR-PSBCH to obtain first enabling instruction information; an extraction module is configured to obtain first control information or indication information of a first control channel based on the first enabling instruction information; the solution The tuning module is further configured to demodulate a first indication channel according to the first control information; or demodulate the first control channel according to the indication information of the first control channel and demodulate the first indication channel.

On the other hand, an embodiment of the present disclosure further provides a communication device including a processor, a memory, a communication unit, and a communication bus; the communication bus is configured to implement the communication between the processor, the communication unit, and the memory. The communication connection; the processor is configured to execute one or more first programs stored in the memory to implement the steps of the V2X communication method described herein; the processor is configured to execute one or more of the programs stored in the memory A second procedure to implement the steps of the V2X communication method described herein.

In another aspect, an embodiment of the present disclosure also provides a computer-readable storage medium storing one or more first computer programs and one or more second computer programs. The one or more A plurality of first computer programs may be executed by one or more processors to implement the steps of the V2X communication method described herein; the one or more second computer programs may be executed by one or more processors to implement Steps of the V2X communication method described herein.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a flowchart of a V2X communication method based on a UE in a V2X coverage area according to an embodiment of the present disclosure;

2 is a flowchart of a V2X communication method based on a UE outside a V2X coverage area according to an embodiment of the present disclosure;

3 is a schematic configuration diagram of Uplink / Downlink TDD configuration information and resource pool information provided by an embodiment of the present disclosure;

4 is a schematic diagram of another configuration of Uplink / Downlink TDD configuration information and resource pool information provided by an embodiment of the present disclosure;

5 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure;

6 is another schematic structural diagram of a communication device according to an embodiment of the present disclosure;

FIG. 7 is another schematic structural diagram of a communication device according to an embodiment of the present disclosure.

detailed description

In order to make the objectives, technical solutions, and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail through specific implementations in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present disclosure and are not intended to limit the present disclosure.

In one aspect, the present disclosure provides a V2X communication method. FIG. 1 is a flowchart of a V2X communication method based on a UE in a V2X coverage area according to an embodiment of the present disclosure. In this embodiment, a terminal UE located in the coverage area of V2X is referred to as a first terminal, and a terminal UE located outside the coverage area of V2X is referred to as a second terminal. In this embodiment, the coverage area and the coverage area are Outside is a relative term, with reference to the area covered by the cellular network where the UE is located, where the first terminal is within its coverage, and the second terminal is not within its coverage. As shown in FIG. 1, the method in this embodiment may include steps S101 and S102.

In step S101, the first terminal sends an NR-side link synchronization signal NR-SLSS and / or an NR-physical side link broadcast channel NR-PSBCH, where the NR-PSBCH includes first enabling indication information.

In step S102, the first terminal sends a first indication channel; wherein the conditions for sending the first indication channel include: a signaling indication and / or a decision condition is satisfied.

Here, the first indication channel is used to instruct resource configuration information of the first terminal in a coverage area in V2X, and may include uplink and downlink resource configuration information and / or a resource pool of the first terminal.

In this embodiment, the first enabling indication information is used to indicate whether the first control information and / or the indication information of the first control channel is valid. The value of the first enabling instruction information is “Yes”, or the value of the first enabling instruction information is “No”.

If the value of the first enabling instruction information is “Yes”, the first control information and / or the indication information of the first control channel is valid; if the value of the first enabling instruction information is “No” , The first control information and / or the indication information of the first control channel is invalid.

In actual applications, in order to achieve sidelink communication between UEs in the coverage and UEs outside the coverage in NR V2X, it is necessary to realize that the UEs in the coverage and the UEs outside the coverage know each other's resource configuration information, that is, Uplink / Downlink and TDD configuration information. And sending / receiving resources or sending / receiving resource pool information, and in step S102, these information are all implemented by using an indication channel (for example, a first indication channel), and the information is carried in the indication channel, and the indication The channel can be a PSSCH (Physical Sidelink Shared Channel) or a newly defined channel, and there can also be a corresponding control channel PSCCH (Physical Sidelink Control Channel).

In this embodiment, the NR-SLSS or NR-PSBCH may be obtained by the first terminal through an instruction issued by the base station, or may be obtained by sending from the second terminal.

In practical applications, when the NR-SLSS or NR-PSBCH is obtained by the first terminal through an instruction issued by the base station, determining the content carried by the indication channel includes the following methods: the base station determines, and the base station combines the indication information after the determination The broadcast message is issued, and the UE directly forwards the broadcast message; the base station configures UE-specific UL / DL and TDD configuration information for the UE, and instructs the UE in a UE-specific manner to send the resource location of the indication channel or the control channel corresponding to the indication channel, The UE sends an indication channel or a control channel corresponding to the indication channel at the indicated position according to the indication information; the UE determines that the UE extracts the indication information to be transmitted according to the base station configuration information or the content of the broadcast message, and sends the indication information in the indication channel.

Similarly, when the NR-SLSS or NR-PSBCH is obtained from the transmission in the second terminal, the determination of the content carried by the indication channel includes the following methods: the base station determines, and the base station combines the instruction information into a broadcast message. Upon delivery, the UE directly forwards the broadcast message; the UE determines that, according to the base station configuration information or the content of the broadcast message, the UE extracts the indication information that needs to be sent and sends it in the indication channel.

In this embodiment, after determining uplink and downlink resource configuration information and / or resource pool information of the first terminal according to an indication of the indication channel, the method may further include: An indication channel of a data packet composed of content of uplink and downlink resource configuration information and / or resource pool information is delivered to a second terminal outside the V2X coverage area.

In this embodiment, before sending the indication channel to a second terminal outside the V2X coverage area, the method may further include: determining whether it is required according to the trigger information received by the first terminal UE. Sending the indication channel; the trigger information includes an indication signaling instruction issued by the base station and a measurement result of a reference signal received power RSRP of the base station by the first terminal; if it needs to be sent, the indication channel is carried Associated sending in the NR-SLSS or NR-PSBCH.

In this embodiment, if the indication signaling issued by the base station indicates that the instruction signaling is issued or the RSRP measurement result meets a preset threshold, carrying the indication channel on the NR-SLSS or Association is performed in the NR-PSBCH, and is sent to a second terminal outside the V2X coverage area.

In this embodiment, the determination condition is to determine the reference signal received power RSRP, and the first terminal sending the first indication channel includes: determining whether the RSRP is less than a predefined threshold, and determining whether to send the first indication according to a result of the determination. channel.

The determining whether to send the first indication channel according to a result of the judgment includes: if the RSRP is less than the predefined threshold, the first terminal sends the first indication channel; if the RSRP is not less than the RSRP If the threshold is predefined, the first terminal does not send or stops sending the first indication channel.

In practical applications, the UE confirms whether the first indication channel needs to be transmitted according to the indication of the base station; if the base station indicates the signaling and the indication is transmitted, it sends; if the base station indicates the signaling or the signaling indication is not transmitted, Do not send;

Or, it is determined whether to send the first indication channel according to a judgment condition; the judgment conditions include: RSRP (Reference Signal Received Power, reference signal received power) meets a threshold requirement, and the RSRP is a measurement result of the reference signal of the base station by the UE;

Or, when NR-SLSS / NR-PSBCH is sent, the indicator channel is sent in association; however, it does not exclude that the UE sends instruction signaling alone (not sending NR-SLSS / NR-PSBCH, the sending conditions of the two are different. PSBCH does not meet the transmission conditions) scheme.

In this embodiment, whether to trigger a UE in the coverage area to send an indication channel to a UE outside the coverage area can be achieved by setting a configuration switch, that is, setting a corresponding configuration switch on the UE to trigger the UE. When is it necessary to issue an indication channel, or indicate the capability of the indication channel sent by the UE, Cell-specific or UE-specific, to enable or disable the UE to send Uplink / Downlink TDD configuration information of the UE within the indication coverage and / or send resource pool information; The conditions for enabling or disabling include: UE capability, network deployment (uplink / downlink, TDD configuration and resource (pool) alignment within and outside the network have been implemented), and scenario (EN-DC network).

In this embodiment, the NR-PSBCH includes first enabling indication information, which is used to indicate whether the first control information or the indication information of the first control channel is valid, or whether the first control information is transmitted. An indication channel, where the signaling indication includes cell-level or terminal UE-level configuration signaling sent by the base station side.

If the content of the configuration signaling is "Yes", the first terminal sends the first indication channel; if the content of the configuration signaling is "No", the first terminal does not send or stop Sending the first indication channel.

Further, the content carried by the first indication channel includes at least one of the following: uplink and downlink configuration information of a TDD system on which the first terminal performs sidelink communication;

Sidelink resource or resource pool configuration information based on which the first terminal performs sidelink communication.

Further, the content carried in the first indication channel may be extracted and determined by the base station or the first terminal.

If the content carried in the first indication channel is determined by the base station signaling indication, it may be implemented by: receiving the first indication channel indication signaling issued by the base station; and according to the first indication channel indication signaling Determines the content carried in the first indication channel.

If the content carried in the first indication channel is determined autonomously by the first terminal, it may be implemented in the following manner: the first terminal according to the TDD uplink and downlink configuration information and / or the sidelink resource or the resource pool issued by the base station The configuration information determines content carried in the first indication channel.

For example, the first terminal extracts uplink and downlink resource configuration information and / or resource pool configuration indication information of the first terminal according to the configuration information of the base station or the content of a broadcast message; and passes the indication information through the The first indication channel is sent out.

That is, when the base station is determined, the base station combines the instruction information into a broadcast message, and the UE directly forwards the broadcast message; the base station configures UE-specific UL / DL TDD configuration information for the UE, and instructs the UE in a UE-specific manner. The resource location of the indication channel or the control channel corresponding to the indication channel is sent, and the UE sends the indication channel or the control channel corresponding to the indication channel at the indicated position according to the indication information.

When the UE determines, the UE extracts the instruction information that needs to be sent according to the base station configuration information or the content of the broadcast message, and sends it in the instruction channel.

In practical applications, sending the NR-SLSS or NR-PSBCH may include: establishing an association relationship between the indication channel and a position of the NR-SLSS / NR-PSBCH resource block.

In this embodiment, before sending the indication channel to a second terminal outside the V2X coverage area, the method may further include: according to the configuration information or the broadcast information issued by the base station. The content of the uplink and downlink resource configuration information and / or resource pool information is extracted and carried in the indication channel.

In this embodiment, the NR-PSBCH includes first control information, where the first control information is used to demodulate the first indication channel, and the content of the first control information includes at least one of the following :

A time domain position of the radio resource of the first indication channel first transmission and / or retransmission;

A radio resource frequency domain position of the first indication channel first transmission and / or retransmission;

The radio resource range or radio resource size occupied by the first indication channel;

The modulation and demodulation scheme MCS of the first indication channel.

In this embodiment, the NR-PSBCH includes indication information of a first control channel, where the indication information of the first control channel is used to instruct demodulation of the first control channel, and the first The control channel is used to demodulate the first indication channel, and the indication information content of the first control channel includes at least one of the following:

A time domain location of a radio resource for the first transmission and / or retransmission of the first control channel;

A radio resource frequency domain position for the first transmission and / or retransmission of the first control channel;

A radio resource range or radio resource size occupied by the first control channel, and / or a search range of the first control channel;

A modulation and coding scheme MCS of the first control channel.

In practical applications, the content of the indication information of the first control channel may be embodied in one of the following ways:

Indicating, in the NR-SLSS / NR-PSBCH, a time-frequency position of a control channel corresponding to the indication channel and / or a size of a resource occupied by the control channel, where the time-frequency position includes a relative transmission of the NR-SLSS / The time domain offset of the resource block of the NR-PSBCH and the frequency domain offset indicating the lowest position of the channel frequency domain relative to the lowest position of the resource block;

Indicating a time-domain offset in the NR-SLSS / NR-PSBCH, and / or a frequency-domain offset, and / or a search area size; that is, indicating a time-domain offset t in the NR-PSBCH, and / or The frequency domain offset f, or the size of the search area, such as the number of RBs (Resource Blocks, Resource Blocks) or CCE (Control Channel Elements), after the receiving UE demodulates the NR-PSBCH, the corresponding time domain offset t And / or the frequency domain offset f, and / or within the search area, the control channel PSCCH is detected, and the indication channel PSSCH is demodulated again according to the control information.

An index is indicated in the NR-SLSS / NR-PSBCH; the index is the time-domain offset, and / or the frequency-domain offset, and / or the resource size; that is, the index is indicated in the NR-PSBCH, The index corresponds to information such as a time domain offset, and / or a frequency domain offset, and / or a resource size. The receiving UE demodulates the control information of the indication channel and the indication channel according to the information corresponding to the indication index.

Indicating a domain in the NR-SLSS / NR-PSBCH; the domain includes information of the indication channel and / or a corresponding control channel, and the information includes at least one of the following: resource location information, resource size information, resource range Information, subcarrier interval information, and control information; that is, the NR-PSBCH includes an indication field, which is used to indicate whether the field in the NR-PSBCH indicating the indication channel and / or the corresponding control channel is valid. The indication channel and / Or The information of the corresponding control channel includes at least one of the following: resource location information, resource size information, resource range information, numerology or subcarrier interval information, and control information.

Further, the first terminal UE extracting from the received NR-SLSS or NR-PSBCH an indication channel for instructing the first terminal to configure resource configuration information in a coverage area in V2X includes:

Obtaining side-link sidelink timing information and / or resource location information of an indication channel or a control channel corresponding to the indication channel from the NR-SLSS / NR-PSBCH, and / or control information of the indication channel;

Alternatively, demodulate a control channel corresponding to the indication channel according to the resource location information of the indication channel in the NR-SLSS / NR-PSBCH; demodulate the indication channel according to the control channel;

Alternatively, the indication channel is demodulated according to the control information of the indication channel and / or the resource location information of the indication channel in the NR-SLSS / NR-PSBCH.

In the V2X communication method provided by the embodiment of the present disclosure, a first terminal sends NR-SLSS and / or NR-PSBCH; and sends a first indication channel; wherein the conditions for sending the first indication channel include: signaling indication and / or fulfillment Judgment conditions; the bearer transmission of resource configuration information of terminals in the coverage area and outside is achieved by sending the first indication channel, so that terminals outside the coverage area can clearly and accurately resolve uplink and downlink resource configuration information of terminals in the coverage area. And resource pool information, thereby improving the reliability of V2X communication.

FIG. 2 is a flowchart of a V2X communication method based on a UE outside a V2X coverage area according to an embodiment of the present disclosure. In this embodiment, a terminal UE located in the coverage area of V2X is referred to as a first terminal, and a terminal UE located outside the coverage area of V2X is referred to as a second terminal. In this embodiment, the coverage area and the coverage area are Outside is a relative term, with reference to the area covered by the cellular network where the UE is located, where the first terminal is within its coverage, and the second terminal is not within its coverage. As shown in FIG. 2, the method in this embodiment may include steps S201 to S204.

In step S201, the second terminal detects an NR-side link synchronization signal NR-SLSS or an NR-physical side link broadcast channel NR-PSBCH.

In step S202, the second terminal demodulates the NR-PSBCH, and obtains first enabling instruction information.

In step S203, the second terminal acquires first control information or indication information of a first control channel based on the first enabling indication information.

In step S204, the second terminal demodulates a first indication channel according to the first control information; or demodulates the first control channel according to the indication information of the first control channel, and demodulates the first control channel. Indication channel.

Here, the first indication channel is used to indicate resource configuration information of the first terminal, and may include uplink and downlink resource configuration information and / or a resource pool of the first terminal.

In this embodiment, the acquiring, by the second terminal, the first control information and / or the indication information of the first control channel based on the first enable indication information includes: determining that the value of the first enable indication information is “ If yes, the second terminal obtains first control information and / or indication information of the first control channel from the NR-PSBCH.

Further, the first enable indication information is included in the NR-PSBCH, and is used to indicate whether the first control information or the indication information of the first control channel is valid, or whether the first control information is transmitted. An indication channel.

In some embodiments, the first control information is included in the NR-PSBCH for demodulating the first indication channel, and the content of the first control information includes at least one of the following:

A modulation and coding scheme MCS of the first indication channel.

In some embodiments, the indication information of the first control channel is included in the NR-PSBCH, and is used to instruct demodulation of the first control channel, wherein the first control channel is used for demodulation. The first indication channel and the indication information content of the first control channel include at least one of the following:

A modulation and coding scheme MCS of the first control channel.

Further, the content carried by the first indication channel includes at least one of the following:

Uplink and downlink configuration information of a TDD system on which the first terminal performs sidelink communication;

In actual applications, in order to achieve sidelink communication between UEs in the coverage and UEs outside the coverage in NR V2X, it is necessary to realize that the UEs in the coverage and the UEs outside the coverage know each other's resource configuration information, that is, Uplink / Downlink and TDD configuration information And sending / receiving resources or sending / receiving resource pool information, and in step S201, the information is implemented by using an indication channel, and the information is carried in the indication channel, and the indication channel may be a PSSCH or a newly defined channel There may also be a corresponding control channel (PSCCH).

In this embodiment, the extracting the uplink and downlink resource configuration information and / or the resource pool in the first indication channel issued by the first terminal according to the first enabling instruction information includes: if the first enabling instruction If the content of the information is "yes", the second terminal obtains the first control information and / or the indication information of the first control channel; and mediates the first control information and / or the indication information of the first control channel. The uplink and downlink resource configuration information and / or the resource pool in the first indication channel.

In practical applications, the content determination carried by the first indication channel may be implemented in the following manner: the base station determines, and after the base station determines, combines the indication information into a broadcast message and the UE directly forwards the broadcast message; the base station configures the UE with the UE- specific UL / DL and TDD configuration information, and instruct the UE to send the indication channel or the resource location of the control channel corresponding to the indication channel in a UE-specific manner, and the UE sends the indication channel or the control channel corresponding to the indication channel at the indicated position according to the indication information; The UE determines that, according to the base station configuration information or the content of the broadcast message, the UE extracts the indication information that needs to be sent and sends it in the indication channel.

In this embodiment, the first control information and / or the indication information of the first control channel may also be extracted in the following manner: obtaining side-link sidelink timing information and / or from the NR-SLSS / NR-PSBCH Resource location information of the indication channel or control channel corresponding to the indication channel, and / or control information of the indication channel; or demodulate the resource location information of the indication channel in the NR-SLSS / NR-PSBCH A control channel corresponding to the indication channel; demodulating the indication channel according to the control channel; or according to control information of the indication channel and / or resources of the indication channel in the NR-SLSS / NR-PSBCH The position information demodulates the indication channel.

That is, the UE detects NR-SLSS / NR-PSBCH, obtains sidelink timing information and / or resource location information of the indication channel or the control channel corresponding to the indication channel, and / or control information of the indication channel, and the content indicated by the indication channel Including: UL / DL TDD configuration information and / or sidelink resource (pool) information of the UE in the coverage;

The UE demodulates the control channel corresponding to the indication channel according to the resource location information of the indication channel, and then demodulates the indication channel to obtain UL / DL TDD configuration information and / or UE sidelink resource (pool) information within the coverage;

Or, the UE demodulates the indication channel according to the control information of the indication channel and / or the resource location information of the indication channel, and obtains UL / DL TDD configuration information and / or sidelink resource (pool) information of the UE within the coverage.

Through the V2X communication method provided in this embodiment, the first terminal sends NR-SLSS and / or NR-PSBCH; and sends a first indication channel; wherein the conditions for sending the first indication channel include: signaling indication and / or fulfillment Judgment conditions; the bearer transmission of resource configuration information of terminals in the coverage area and outside is achieved by sending the first indication channel, so that terminals outside the coverage area can clearly and accurately resolve uplink and downlink resource configuration information of terminals in the coverage area. And resource pool information, thereby improving the reliability of V2X communication.

The following describes the V2X communication method provided by the foregoing embodiments of the present disclosure in detail with reference to application scenarios.

In an exemplary embodiment, in NR V2X, when sidelink communication is performed between an in-cover UE and an out-of-cover UE, the out-of-cover UE needs to know the Uplink / Downlink and TDD configuration information of the in-cover UE. The signaling overhead of the Uplink / Downlink TDD configuration in NR is relatively large, and in order to realize that NR and V2X UEs within the coverage and UEs outside the coverage know each other's Uplink / Downlink TDD configuration information, and send / receive resource information or send / receive Information about the resource pool. In this embodiment, whether the UE sends the indication channel can be controlled by receiving the configuration signaling of the base station. The process is as follows:

In NR V2X, the base station configures Cell-specific or UE-specific parameters. According to the indication of the configuration parameters, if the UE indicates "yes" or "true", the UE sends an instruction message on the sidelink. The content of the instruction message includes the cellular Network Uplink / Downlink TDD configuration information and / or sidelink resources or resource pool information, where sidelink resource or resource pool information includes sidelink sending resources or resource pools, and / or sidelink receiving resources or resource pools, Uplink / Downlink and TDD configuration information include Common configuration information and / or UE-specific configuration information configured on the network side.

Alternatively, the base station configures the configuration parameters based on implementation or configuration conditions. For example, according to the UE capability configuration, if the UE capability meets the capability threshold requirements, the parameter content of the UE is configured to be "yes" or "true"; or, according to the scenario configuration, for EN-DC (E-UTRA-NR Dual Connectivity) ) Network, the content of the configuration parameters in the secondary cell is "No" or "false". Or, according to the network deployment configuration, if the Uplink / Downlink TDD configuration information and / or resource (pool) information configured within the coverage of the cellular network is consistent with the pre-configuration information outside the coverage, the parameter content of the UE is configured as "No" or " false ". The UE determines whether to send an instruction message on the sidelink based on the content of the configuration parameters. For example, if the parameter content is "yes" or "true", the instruction message is sent, and if the parameter content is "no" or "false", the instruction message is not sent or stopped.

Further, the configuration switch can also be set to enable Cell-specific or UE-specific configuration to enable or disable the UE to send Uplink / Downlink TDD configuration information and / or send resource pool information indicating the UE within the coverage; enable or disable The conditions include one or more of the following: UE capabilities, network deployment (the network deployment has implemented Uplink / Downlink TDD configuration and resource (pool) alignment within and outside coverage), and scenarios (EN-DC network).

In an exemplary embodiment, in NR V2X, the UE sends an instruction message on a sidelink, and the content of the instruction message includes Uplink / Downlink TDD configuration information of the cellular network and / or sidelink resources or resource pool information, where the sidelink resources or The resource pool information includes a sidelink sending resource or resource pool, and / or a sidelink receiving resource or resource pool. The Uplink / Downlink and TDD configuration information includes common configuration information and / or UE-specific configuration information configured on the network side.

Conditions for the UE to send the indication message include: if the UE sends NR-SLSS and / or NR-PSBCH, the UE sends the indication message.

Alternatively, the UE sends the indication message according to a decision condition. Judgment conditions include meeting RSRP (Reference, Received, Power) threshold requirements. For example, the RSRP detected by the UE is less than or not greater than the decision threshold, and the indication message is sent. The RSRP threshold may be different from the RSRP threshold for determining whether to send NR-SLSS / NR-PSBCH.

In an exemplary embodiment, if the UE sends an indication channel, a bearer indication message is used to indicate Uplink / Downlink TDD configuration information and / or sidelink resources or resource pool information of the cellular network, and / or a control channel corresponding to the indication channel is sent. Then, in the NR-PSBCH, resource location information and / or numerology or subcarrier interval information is indicated, and the resource location information reflects the first transmission and / or retransmission of the transmission indication channel and / or the control channel corresponding to the indication channel. The relative position of the resource and the resource transmitting the NR-PSBCH includes a time domain offset and / or a frequency domain offset, and / or a time when an indication channel and / or a control channel corresponding to the indication channel is transmitted. Domain and / or frequency domain resource size. The numerology or subcarrier interval reflects the numerology or subcarrier interval used for the first transmission and / or retransmission of the indication channel or the control channel corresponding to the indication channel.

For example, an offset in the NR-PSBCH indicating that one of the symbols or the first symbol of the radio resource occupied by the control channel corresponding to the transmission indication channel is relative to one of the symbols or the first symbol of the radio resource occupied by the NR-PSBCH , And / or the lowest position in the frequency domain of the control channel corresponding to the transmission indication channel or the minimum subcarrier index of the starting RB (subcarrier 0) relative to the lowest position in the frequency domain of the sending NR-PSBCH or the minimum subcarrier index of the starting RB (subcarrier) 0). At the same time, it indicates the number of symbols occupied by the control channel in the time domain, and / or the number of RBs or subcarriers occupied by the control channel in the frequency domain, and / or, indicates that the control channel occupies radio resources. Granularity and / or a range of radio resources for sending the control channel. An example is shown in FIG.

Alternatively, resource location information of the indication channel and / or the corresponding control channel relative to the NR-PSBCH is determined according to a predefined definition, and the resource location information includes at least one of the following: time domain offset (frequency offset) (offset), sending the time and / or frequency domain resource size of the indication channel and / or the control channel corresponding to the indication channel, and / or sending the radio resource granularity and / or the radio frequency of the indication channel and / or the control channel corresponding to the indication channel Resource scope.

In an exemplary embodiment, if the UE sends an indication channel, which is used to indicate Uplink / Downlink TDD configuration information and / or sidelink resources or resource pool information of the cellular network, and / or sends a control channel corresponding to the indication channel, then, in The NR-PSBCH indicates resource location information and / or numerology or subcarrier interval information, and the resource location information reflects resource range information for detecting the first transmission and / or retransmission of the control channel, including time domain offset (offset ) And / or frequency domain offset, and / or search for an area of the control channel, the numerology or subcarrier interval reflects the first transmission and / or retransmission of the indication channel or the control channel corresponding to the indication channel The numerology or subcarrier interval used for transmission.

For example, the NR-PSBCH indicates a time domain offset t and / or a frequency domain offset f, and / or a resource size S. The unit corresponding to the time domain offset t is a symbol or a slot or a subframe, and the unit corresponding to the frequency domain offset f is a subcarrier or an RB. According to the time domain offset t and / or the frequency domain offset f, and / or the resource size S, a resource range for detecting the control channel corresponding to the indication channel may be determined. For example, after the time-domain offset t1 from the NR-PSBCH, the frequency-domain offset is at least f1 and the control channel is demodulated within a range of s1 RBs, or the time-domain relative to the NR-PSBCH is demodulated. After the offset t1, the control channel is demodulated in a frequency region offset of f1, x symbols or ms in the time domain, and y RBs or subcarriers in the frequency domain. The NR-PSBCH may also indicate the resource granularity of demodulating the control channel corresponding to the indication channel. An example is shown in Figure 4 of the accompanying drawings.

Alternatively, resource location information of the indication channel and / or the corresponding control channel relative to the NR-PSBCH is determined according to a predefined definition, and the resource location information includes at least one of the following: time domain offset (frequency offset) (offset), sending the time channel resource range and / or the frequency domain resource range of the indication channel and / or the control channel corresponding to the indication channel.

In an exemplary embodiment, if the UE sends an indication channel, which is used to indicate Uplink / Downlink TDD configuration information and / or sidelink resources or resource pool information of the cellular network, and / or sends a control channel corresponding to the indication channel, then, in The NR-PSBCH indicates resource location information and / or numerology or subcarrier interval information, and the resource location information reflects the resource and the transmission location of the first transmission and / or retransmission of the transmission indication channel and / or the control channel corresponding to the indication channel. The relative position of the resource of the NR-PSBCH includes a position information index, and the numerology or subcarrier interval reflects the numerology or subcarrier used for the first transmission and / or retransmission of the indication channel and / or the control channel corresponding to the indication channel. Carrier interval.

For example, the NR-PSBCH indicates a position information index, which corresponds to time domain offset, and / or frequency domain offset, and / or resource size, and / or numerology or subcarrier interval. Based on this position information index, the UE can obtain the resource position of sending the indication channel and / or the control channel corresponding to the indication channel by looking up the table or mapping, such as time domain offset, frequency domain offset, and detection control. Information such as the resource size or range of the channel and / or numerology or subcarrier spacing.

In an exemplary embodiment, if the UE sends an indication channel, which is used to indicate Uplink / Downlink TDD configuration information and / or sidelink resources or resource pool information of the cellular network, and / or sends a control channel corresponding to the indication channel, then, in Control information indicating the indication channel in the NR-PSBCH is used to demodulate the indication channel.

The control information includes at least one of the following: indicating the time domain resource location and / or frequency domain resource location of the first transmission and / or retransmission of the channel, indicating the resource size of the channel (such as the number of occupied symbols and / or the number of RBs), numerology Or subcarrier interval, indicating the MCS value corresponding to the channel.

In an exemplary embodiment, the NR-PSBCH includes a control validity indication, which is used to indicate whether the indication field of the control information of the first transmission and / or retransmission of the corresponding indication channel included in the NR-PSBCH is valid. The indication channel is used to indicate Uplink / Downlink TDD configuration information and / or sidelink resources or resource pool information of the cellular network, and the control information is used to demodulate the indication channel, including at least one of the following: an indication channel first transmission and The time domain resource location and / or frequency domain resource location of the retransmission indicates the resource size of the first channel transmission and / or retransmission (such as the number of occupied symbols and / or the number of RBs), and the numerology or subcarrier interval indicates the channel first The corresponding MCS value is transmitted and / or retransmitted.

For example, if the value of the control effective indication is 1 or "Yes" or "true", it indicates that the control information indication field corresponding to the indication channel included in the NR-PSBCH is valid; otherwise, it indicates invalid.

In an exemplary embodiment, the NR-PSBCH includes an indication channel validity indication, which is used to indicate resources for the first transmission and / or retransmission of control channels or information corresponding to the indication channel and / or the indication channel included in the NR-PSBCH. The location information indicates whether the domain is valid. The indication channel is used to indicate Uplink / Downlink TDD configuration information and / or sidelink resources or resource pool information of the cellular network, and the control channel or information is used to demodulate the indication channel. The resource location information for the first transmission and / or retransmission of the indication channel and / or the control channel or information of the indication channel includes at least one of the following: time domain offset, frequency domain offset, numerology or subcarrier, time domain range , Frequency domain range, corresponding to the index of the resource location information combination. The time-domain offset is a time-domain offset or delay relative to the PSBCH, such as an offset or delay from the first symbol of the PSBCH; the frequency-domain offset is a frequency-domain offset or Frequency hopping, such as the frequency domain offset from subcarrier 0 of the RB with the smallest index to the PSBCH; the time domain range includes the size of the time domain resources occupied by the indicator channel and / or the control channel or information of the indicator channel, such as N Symbols or slots, or a time-domain range indicating that the indication channel and / or the control channel or information of the indication channel are detected; the frequency domain range includes the frequency occupied by the indication channel and / or the control channel or information of the indication channel The size of a domain resource, such as M RBs or subcarriers, or a frequency domain range indicating the control channel or information for detecting the indication channel and / or the indication channel; the index of the corresponding combination of resource location information contains multiple resource location information Combination, such as: time domain offset, frequency domain offset, subcarrier, time domain range, frequency domain range, etc.

For example, if the value of the indication channel validity indication is 1 or "Yes" or "true", it means that the resource location information indicating domain of the first transmission and / or retransmission corresponding to the indication channel included in the NR-PSBCH is valid, otherwise , It means invalid.

In an exemplary embodiment, for a UE in a cellular network coverage, if an indication channel is sent, the value of the control effective indication field and / or the indication channel effective indication field in the NR-PSBCH is set to 1 or "yes" or "true" , Otherwise set to 0 or "No" or "false".

For a UE outside the coverage of a cellular network, if the value of the control effective indication field and / or the indication channel effective indication field in the received NR-PSBCH is 1 or "yes" or "true", and whether the indication in the NR-PSBCH is The indication of the UE in the coverage is 1, then the UE keeps the values of the control effective indication field and / or the indication channel effective indication field in the NR-PSBCH sent by it consistent with the synchronous reference UE, that is, set to 1 or "yes" Or "true"; if the value of the control indication field and / or the indication channel indication field in the received NR-PSBCH is 1 or "yes" or "true", and whether the indication in the NR-PSBCH is within coverage If the indication of the UE is 0, the UE sets the value of the control indication field and / or the indication channel indication field to 0 or "No" or "false" in the NR-PSBCH it sends.

Or, for a UE outside the coverage of the cellular network, in the NR-PSBCH sent by it, the value of the control effective indication field and / or the indication channel effective indication field is set to 0 or "No" or "false".

In an exemplary embodiment, the UE receives indication channel configuration signaling sent by the base station, where the indication channel configuration signaling is Cell-specific or UE-specific, and includes configuration information including at least one of the following: data indicating the channel , Demodulating control information indicating an channel, indicating channel and / or corresponding control channel resource location information and / or numerology or subcarrier information. The data content of the indication channel includes at least Uplink / Downlink / TDD configuration information of the cellular network and / or sidelink resources or resource pool information.

The UE indicates resource location information and / or numerology or subcarrier information of the first transmission and / or retransmission of the indication channel and / or the corresponding control channel in the NR-PSBCH, or indicates the indication channel first in the NR-PSBCH. Transmitting and / or retransmitting corresponding control information and resource location information and / or numerology or subcarrier information indicating the first transmission and / or retransmission of the channel. The UE sends an indication channel on a sidelink, and the resource location of the indication channel is consistent with the location information of the indication channel and / or the corresponding control channel indicated in the NR-PSBCH.

Alternatively, the UE obtains the Uplink / Downlink TDD configuration information from the Uplink / Downlink TDD configuration signaling of the cellular network, obtains the sidelink resource or resource pool information from the sidelink resource or sidelink resource pool configuration signaling, and adds the Uplink / Downlink TDD configuration information And / or sidelink resources or resource pool information form a data packet and send it on the indication channel. The UE determines the resource for sending the indication channel according to the signaling indication of the base station or according to a predefined definition, and indicates the location information and / or numerology or subcarrier information of the indication channel and / or the corresponding control channel in the NR-PSBCH, or In the NR-PSBCH, control information corresponding to the indication channel and resource location information and / or numerology or subcarrier information of the indication channel are indicated.

In another aspect, the present disclosure provides a communication device. The communication device can be applied to various base stations or terminals, especially terminals in or outside the coverage area of V2X. FIG. 5 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure. Referring to FIG. 5, the device may include a sending module 51 configured to send an NR-side link synchronization signal NR-SLSS and / or an NR-physical side chain. Channel NR-PSBCH, the NR-PSBCH includes first enable indication information; and sends a first indication channel; wherein the conditions for sending the first indication channel include: a signaling indication and / or a decision condition is satisfied.

In practical applications, the first indication channel may be a first indication channel extracted from the NR-SLSS or NR-PSBCH received from the base station and used to instruct the first terminal to configure resource configuration information in a coverage area in V2X. For the steps and processes implemented by each module in the device, reference may be made to the notification process of the uplink and downlink configuration information and the resource pool information shown in the foregoing embodiments, and details are not described herein again.

In this embodiment, the communication device needs to perform an instruction operation sent by other communication devices through an instruction channel in addition to the instruction operation of the base station. In this regard, another structure of the communication device is provided in the present disclosure. FIG. 6 is another schematic structural diagram of a communication device according to an embodiment of the present disclosure. Referring to FIG. 6, the device includes a detection module 61 configured to detect an NR-side link synchronization signal NR-SLSS or an NR-physical side chain. Channel broadcast channel NR-PSBCH; demodulation module 62 is configured to demodulate the NR-PSBCH to obtain first enabling instruction information; extraction module 63 is configured to obtain first control information based on the first enabling instruction information Or indication information of a first control channel; the demodulation module 62 is further configured to demodulate a first indication channel according to the first control information; or demodulate the first indication channel according to the indication information of the first control channel A control channel, and demodulating the first indication channel. For the steps and processes implemented by the modules in the device, reference may be made to the procedures for acquiring the uplink and downlink configuration information and resource pool information in the coverage area by the terminals outside the coverage area shown in the foregoing embodiments, which are not described here. To repeat.

In the apparatus provided in this embodiment, the communication device extracts an indication channel from the received NR-SLSS or NR-PSBCH, which is used to instruct the communication device to configure resource configuration information in a coverage area in V2X, and determines a location according to the indication channel. The uplink and downlink resource configuration information and / or resource pool information of the communication device in the V2X coverage area, and the communication device performs data transmission on the determined uplink and downlink resource configuration information and / or resource pool information; A way to indicate a channel to realize the bearer transmission of resource configuration information of terminals in and outside the coverage area, so that terminals outside the coverage area can clearly and accurately resolve uplink and downlink resource configuration information and resource pool information of terminals in the coverage area, thereby Improved the reliability of V2X communication.

FIG. 7 is another schematic structural diagram of a communication device according to an embodiment of the present disclosure. As shown in FIG. 7, the device includes a processor 211, a memory 212, a communication unit 213, and a communication bus 214; the communication bus 214 is configured to implement a communication connection between the processor 2111, the communication unit 213, and the memory 212;

In one example, the processor 211 is configured to execute one or more first programs stored in a memory to implement the steps of the V2X communication method in the foregoing embodiments.

In another example, the processor 211 is configured to execute one or more second programs stored in the memory to implement the steps of the V2X communication method in the above embodiments.

In another aspect, embodiments of the present disclosure also provide a computer-readable storage medium including any computer-readable storage medium for storing information such as computer-readable instructions, data structures, computer program modules, or other data. Volatile or non-volatile, removable or non-removable media implemented in a method or technology. Computer-readable storage media include, but are not limited to, RAM (Random Access Memory), ROM (Read-Only Memory, Read-Only Memory), EEPROM (Electrically Erasable, Programmable, Read-Only Memory, and Erasable Programmable Read-Only Memory) ), Flash memory or other memory technology, CD-ROM (Compact Disc Read-Only Memory), digital versatile disk (DVD) or other optical disk storage, magnetic box, magnetic tape, disk storage or other magnetic storage devices, Or any other medium that can be used to store desired information and can be accessed by a computer.

In one example, the computer-readable storage medium in this embodiment may be used to store one or more first computer programs, and the one or more first computer programs may be executed by one or more processors to implement the above. Steps of the V2X communication method in each embodiment.

In another example, the computer-readable storage medium in this embodiment may be used to store one or more second computer programs, and the one or more second computer programs may be executed by one or more processors to implement The steps of the V2X communication method in the above embodiments.

On the other hand, the embodiment of the present disclosure also provides a first computer program (also referred to as computer software), which may be distributed on a computer-readable medium and executed by a computing device to implement the above implementations. At least one step of the V2X communication method shown in the example; and in some cases, at least one step shown or described may be performed in an order different from that described in the above embodiments.

An embodiment of the present disclosure further provides a second computer program (also referred to as computer software), which may be distributed on a computer-readable medium and executed by a computable device to implement the above-mentioned embodiments. At least one step of the V2X communication method; and in some cases, at least one step shown or described may be performed in an order different from that described in the above embodiments.

On the other hand, an embodiment of the present disclosure also provides a computer program product including a computer-readable device, where the computer-readable device stores the first computer program, the second computer program, or the third computer program as shown above. The computer-readable device may include a computer-readable storage medium as shown above.

It can be seen that those skilled in the art should understand that all or some of the steps, systems, and functional modules / units in the devices disclosed in the above methods can be implemented as software (can be implemented by computer program code executable by a computing device ), Firmware, hardware, and appropriate combinations. In a hardware implementation, the division between functional modules / units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be composed of several physical The components execute cooperatively. Some or all physical components can be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit .

In addition, it is well known to those of ordinary skill in the art that a communication medium typically contains computer-readable instructions, data structures, computer program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium. Therefore, the present disclosure is not limited to any particular combination of hardware and software.

The above is a further detailed description of the embodiments of the present disclosure in connection with the exemplary embodiments, and it cannot be considered that the implementation of the present disclosure is limited to these descriptions. For those of ordinary skill in the technical field to which the present disclosure belongs, without departing from the concept of the present disclosure, several simple deductions or replacements can be made, which should all be regarded as falling within the protection scope of the present disclosure.

Claims

A V2X communication method includes:

The first terminal sends a new radio-side link synchronization signal (NR-SLSS) and / or NR-physical side-link broadcast channel (NR-PSBCH), where the NR-PSBCH includes first enabling indication information;

The first terminal sends a first indication channel, and the conditions for sending the first indication channel include: a signaling indication and / or a decision condition is satisfied.
The V2X communication method according to claim 1, wherein:

The first enable indication information is used to indicate whether the first control information or the indication information of the first control channel included in the NR-PSBCH is valid, or

The first enablement indication information is used to indicate whether the first indication channel is sent.
The V2X communication method according to claim 2, wherein the first control information is used to demodulate the first indication channel, and the content of the first control information includes at least one of the following:

A time domain position of the radio resource of the first indication channel first transmission and / or retransmission;

A radio resource frequency domain position of the first indication channel first transmission and / or retransmission;

The radio resource range or radio resource size occupied by the first indication channel;

A modulation and coding scheme (MCS) of the first indication channel.
The V2X communication method according to claim 2, wherein the indication information of the first control channel is used to instruct demodulation of the first control channel, and the first control channel is used to demodulate the first control channel An indication channel, and content of the indication information of the first control channel includes at least one of the following:

A time domain location of a radio resource for the first transmission and / or retransmission of the first control channel;

A radio resource frequency domain position for the first transmission and / or retransmission of the first control channel;

A radio resource range or radio resource size occupied by the first control channel, and / or a search range of the first control channel;

A modulation and coding scheme (MCS) of the first control channel.
The V2X communication method according to any one of claims 2 to 4, wherein if the value of the first enable indication information is "yes", the first control information and / or the indication of the first control channel The information is valid; if the value of the first enable indication information is "No", the first control information and / or the indication information of the first control channel is invalid.
The V2X communication method according to claim 1, wherein the signaling indication comprises a cell-level or terminal-level configuration signaling sent by a base station side.
The V2X communication method according to claim 6, wherein if the content of the configuration signaling is "yes", the first terminal sends the first indication channel; if the content of the configuration signaling is "" No ", the first terminal does not send or stops sending the first indication channel.
The V2X communication method according to claim 1, wherein the judgment condition is judgment reference signal received power (RSRP), and the sending of the first indication channel by the first terminal comprises: judging whether the RSRP is less than a predefined threshold, according to the judgment As a result, it is determined whether to send the first indication channel.
The V2X communication method according to claim 8, wherein the determining whether to send the first indication channel according to a result of the judgment comprises:

If the RSRP is less than the predefined threshold, the first terminal sends the first indication channel;

If the RSRP is not less than the predefined threshold, the first terminal does not send or stops sending the first indication channel.
The V2X communication method according to any one of claims 1 to 9, wherein the content carried by the first indication channel includes at least one of the following:

Uplink and downlink configuration information of a time division duplex (TDD) system on which the first terminal performs side-link communication;

Configuration information of a side link resource or a resource pool on which the first terminal performs side link communication.
The V2X communication method according to claim 10, wherein the first terminal determines the content carried in the first indication channel according to a base station signaling instruction or the first terminal autonomously determines the content in the first indication channel. Hosted content.
The V2X communication method according to claim 11, wherein determining the content carried in the first indication channel according to a base station signaling indication comprises:

Receiving a first indication channel indication signaling issued by the base station;

Determining content carried in the first indication channel according to the content of the first indication channel indication signaling.
The V2X communication method according to claim 11, wherein the content autonomously determined by the first terminal to be carried in the first indication channel comprises:

The first terminal determines the content carried in the first indication channel according to the TDD uplink and downlink configuration information and / or side-link resource or resource pool configuration information issued by the base station.
A V2X communication method includes:

The second terminal detects a new radio-side link synchronization signal (NR-SLSS) or an NR-physical side-link broadcast channel (NR-PSBCH);

Demodulating the NR-PSBCH by the second terminal, and obtaining first enabling instruction information;

Acquiring, by the second terminal, first control information and / or indication information of a first control channel based on the first enabling indication information;

Demodulating the first indication channel by the second terminal according to the first control information; and / or demodulating the first control channel according to the indication information of the first control channel, and demodulating the first indication channel .
The V2X communication method according to claim 14, wherein:

The first enabling indication information is used to indicate whether the first control information or the indication information of the first control channel included in the NR-PSBCH is valid, or

The first enablement indication information is used to indicate whether the first indication channel is sent.
The V2X communication method according to claim 15, wherein the first control information is used to demodulate the first indication channel, and the content of the first control information includes at least one of the following:

A time domain position of the radio resource of the first indication channel first transmission and / or retransmission;

A radio resource frequency domain position of the first indication channel first transmission and / or retransmission;

The radio resource range or radio resource size occupied by the first indication channel;

A modulation and coding scheme (MCS) of the first indication channel.
The V2X communication method according to claim 15, wherein the indication information of the first control channel is used to instruct demodulation of the first control channel, and the first control channel is used to demodulate the first control channel An indication channel, and content of the indication information of the first control channel includes at least one of the following:

A time domain location of a radio resource for the first transmission and / or retransmission of the first control channel;

A radio resource frequency domain position for the first transmission and / or retransmission of the first control channel;

A radio resource range or radio resource size occupied by the first control channel, and / or a search range of the first control channel;

A modulation and coding scheme (MCS) of the first control channel.
The V2X communication method according to any one of claims 14 to 17, wherein the second terminal acquiring the first control information and / or the indication information of the first control channel based on the first enable indication information comprises: When it is determined that the value of the first enabling indication information is "Yes", the second terminal obtains the first control information and / or the indication information of the first control channel from the NR-PSBCH.
The V2X communication method according to any one of claims 14 to 18, wherein the content carried by the first indication channel includes at least one of the following:

Uplink and downlink configuration information of a time division duplex (TDD) system on which the first terminal performs side link communication;

Configuration information of a side link resource or a resource pool on which the first terminal performs side link communication.
A communication device includes:

A sending module configured to send a new radio-side-link synchronization signal (NR-SLSS) and / or an NR-physical side-link broadcast channel (NR-PSBCH), the NR-PSBCH containing first enabling indication information; and Send a first indication channel; wherein the conditions for sending the first indication channel include: a signaling indication and / or a decision condition is satisfied.
A communication device includes:

A detection module configured to detect a new radio-side link synchronization signal (NR-SLSS) or a NR-physical side link broadcast channel (NR-PSBCH);

A demodulation module configured to demodulate the NR-PSBCH, and obtain first enabling instruction information;

An extraction module configured to obtain first control information or indication information of a first control channel based on the first enabling indication information;

The demodulation module is further configured to demodulate a first indication channel according to the first control information; or demodulate the first control channel according to the indication information of the first control channel, and demodulate the first control channel. Indication channel.
A communication device includes: a processor, a memory, a communication unit, and a communication bus;

The communication bus is configured to implement a wireless communication connection between the processor, the communication unit, and the memory;

The processor is configured to execute one or more first programs stored in a memory to implement the steps of the V2X communication method according to any one of claims 1 to 13;

The processor is configured to execute one or more second programs stored in a memory to implement the steps of the V2X communication method according to any one of claims 14 to 19.
A computer-readable storage medium stores one or more first computer programs and one or more second computer programs, and the one or more first computer programs can be replaced by one or more Steps executed by each processor to implement the V2X communication method according to any one of claims 1 to 13;

The one or more second computer programs may be executed by one or more processors to implement the steps of the V2X communication method according to any one of claims 14 to 19.