CN114978451B

CN114978451B - Sidelink transmission method, device and terminal

Info

Publication number: CN114978451B
Application number: CN202210362378.0A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Nanjing Xingsi Semiconductor Co ltd
Current assignee: Nanjing Xingsi Semiconductor Co ltd
Priority date: 2022-04-07
Filing date: 2022-04-07
Publication date: 2023-10-20
Anticipated expiration: 2042-04-07
Also published as: CN114978451A

Abstract

The application discloses a method, a device and a terminal for transmitting a Sidelink, which belong to the technical field of communication and comprise the following steps: the terminal determines target transmission resources of a resource pool positioned in the shared frequency band according to a target rule, wherein the target transmission resources are used for the terminal to carry out Sidelink communication; the target rule includes at least one of: determining LBT bandwidths in the resource pool, which can be used for the terminal to carry out Sidelink communication, based on LBT monitoring results of each LBT bandwidth in the resource pool under the condition that the size of the resource pool is larger than that of the LBT bandwidths; under the condition that the size of the resource pool is smaller than or equal to the size of the LBT bandwidth, if the LBT monitoring of the resource pool is successful, determining that the resource pool can be used for the terminal to carry out Sidelink communication; and under the condition that the size of the resource pool is smaller than or equal to the size of the LBT bandwidth, if the LBT monitoring of the resource pool fails, determining that the resource pool is unavailable for the terminal to carry out the Sidelink communication.

Description

Sidelink transmission method, device and terminal

Technical Field

The application belongs to the technical field of communication, and particularly relates to a method, a device and a terminal for transmitting a Sidelink.

Background

In performing Side Link (SL) communication, a terminal can only transmit or receive on a Resource pool within an active Bandwidth Part (BWP), where the size of the Resource pool may be configured to 10-275 Resource Blocks (RBs), each Resource pool contains at most 27 sub-channels, and each sub-channel is a set of a plurality (not less than 10) of physical Resource blocks (Physical Resource Block, PRBs) that are non-overlapping in succession in a single slot.

However, in the shared frequency band, the size of the existing SL resource pool may exceed the listen before talk (Listen Before Talk, LBT) bandwidth, which may result in lower reliability of the terminal performing the sip communication in the shared frequency band if the related behavior of the terminal performing the sip communication in the shared frequency band is not known.

Disclosure of Invention

The embodiment of the application provides a method, a device and a terminal for transmitting a Sidelink, which can solve the problem that the reliability of the terminal for Sidelink communication on a shared frequency band is lower.

In a first aspect, a side link Sidelink transmission method is provided, applied to a terminal, and the method includes:

determining target transmission resources of a resource pool positioned in a shared frequency band according to a target rule, wherein the target transmission resources are used for performing Sidelink communication by the terminal;

wherein the target rule includes at least one of a first rule, a second rule, and a third rule:

the first rule is: determining LBT bandwidths in the resource pool, which can be used for the terminal to perform Sidelink communication, based on LBT monitoring results of each LBT bandwidth in the resource pool under the condition that the size of the resource pool is larger than that of the listen before send LBT bandwidth;

the second rule is: under the condition that the size of the resource pool is smaller than or equal to the size of the LBT bandwidth, if LBT monitoring of the resource pool is successful, determining that the resource pool can be used for the terminal to carry out Sidelink communication;

The third rule is: and under the condition that the size of the resource pool is smaller than or equal to the size of the LBT bandwidth, if the LBT monitoring of the resource pool fails, determining that the resource pool is not available for the terminal to carry out the Sidelink communication.

In a second aspect, a side link Sidelink transmission device is provided, applied to a terminal, and the device includes:

the determining module is used for determining target transmission resources of a resource pool positioned in the shared frequency band according to a target rule, wherein the target transmission resources are used for the terminal to carry out Sidelink communication;

In a third aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

In a fourth aspect, a terminal is provided, including a processor and a communication interface, where the processor is configured to determine, according to a target rule, a target transmission resource in a resource pool of a shared frequency band, where the target transmission resource is used for performing sidlink communication by the terminal, and the communication interface is configured to send second information, where the second information is used to indicate at least one of an LBT state corresponding to the resource pool and a channel occupation time COT of the terminal performing sidlink communication in the resource pool, where the LBT state is used to characterize an LBT monitoring result corresponding to the resource pool.

In a fifth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor realizes the steps of the method according to the first aspect.

In a sixth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions implementing the steps of the method according to the first aspect.

In a seventh aspect, there is provided a computer program product stored in a storage medium, the computer program product being executed by at least one processor to implement the steps of the method according to the first aspect.

In the embodiment of the application, a terminal determines target transmission resources of a resource pool positioned in a shared frequency band according to a target rule, wherein the target transmission resources are used for the terminal to carry out Sidelink communication; wherein the target rule includes at least one of: determining LBT bandwidths in the resource pool, which can be used for the terminal to perform Sidelink communication, based on LBT monitoring results of each LBT bandwidth in the resource pool under the condition that the size of the resource pool is larger than that of the LBT bandwidths sent before listening; under the condition that the size of the resource pool is smaller than or equal to the size of the LBT bandwidth, if LBT monitoring of the resource pool is successful, determining that the resource pool can be used for the terminal to carry out Sidelink communication; and under the condition that the size of the resource pool is smaller than or equal to the size of the LBT bandwidth, if the LBT monitoring of the resource pool fails, determining that the resource pool is not available for the terminal to carry out the Sidelink communication. Therefore, when the terminal performs the Sidelink communication in the shared frequency band, the problem of determining the transmission resources of the terminal due to an LBT mechanism in the SL system can be solved by definitely determining the transmission resources of the terminal for performing the Sidelink communication in the resource pool of the shared frequency band, so that the reliability of the terminal for performing the Sidelink communication in the shared frequency band can be improved, and the problem of crowding the authorized frequency spectrum can be relieved.

Drawings

Fig. 1 is a schematic flow chart of a side link Sidelink transmission method according to an embodiment of the present application;

FIG. 2 is a second schematic flow chart of a side link Sidelink transmission method according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of a side link Sidelink transmission device according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 5 is a schematic diagram of a hardware structure of a terminal according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for purposes of example and uses NR terminology in much of the following description, but these techniques may also be applied to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

For ease of understanding, some of the following descriptions are directed to embodiments of the present application:

The following describes in detail the side link Sidelink transmission provided by the embodiment of the present application through some embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 1, fig. 1 is a schematic flow chart of a side link Sidelink transmission method provided in an embodiment of the present application, where the method is applied to a terminal, as shown in fig. 1, and the method includes the following steps:

step 101, determining target transmission resources of a resource pool positioned in a shared frequency band according to a target rule, wherein the target transmission resources are used for performing Sidelink communication by the terminal;

In this embodiment, the shared frequency band may be understood as an unlicensed frequency band, and for a system operating in the shared frequency band, according to design criteria of Rel-16 new wireless unlicensed (NR-U), a set of regulatory criteria and regulations are formulated and unified as much as possible for ensuring that different systems reasonably coexist in the shared frequency band in different countries and regions. Of these, the most important is the introduction of LBT mechanism, i.e. channel monitoring is necessary before data transmission, and access is possible with ensuring that the target channel is not interfered with. However, the LBT mechanism brings about uncertainty of information transmission, so that transmission resources for communication in a resource pool located in a shared frequency band by the terminal need to be clarified based on the LBT monitoring result.

The method can perform the Sidelink communication on the shared frequency band, namely the Sidelink-U, and can improve the throughput of the Sidelink system while relieving the problem of authorized spectrum resource congestion by applying the Sidelink to the shared frequency band in consideration of the large bandwidth on the unlicensed frequency band.

Sidelink also supports BWP configuration, with SL BWP being defined in a manner similar to that of BWP in NR systems. Furthermore, transmission resources of the terminal for performing the Sidelink communication in the resource pool located in the shared frequency band need to be clarified based on the LBT monitoring result, so as to solve the problem of uncertainty of information transmission caused by an LBT mechanism.

On one carrier, at most one BWP may be configured or preconfigured and used for the sidlink transmission and reception at the same time. On the licensed spectrum, if a User Equipment (UE) configures both SL BWP and uplink BWP, it is necessary to ensure that the subcarrier Spacing (SCS) on both links is the same. The SL BWP may be configured with a subcarrier spacing of 15kHz, 30kHz, or 60kHz in Frequency Range 1 (Frequency Range 1, FR 1), and the Frequency Range 2 (Frequency Range 2, FR 2) may be configured with a subcarrier spacing of 60kHz or 120kHz.

For each Sidelink UE, multiple Sidelink resource pools may be configured on each SL BWP. The resource pool configuration in SL BWP supports a maximum of 16 reception resource pools and 8 transmission resource pools. The resource pool is divided into a plurality of sub-channels in the frequency domain, and the sub-channels refer to a set of a plurality of (not less than 10) PRBs that are continuously non-overlapping in a single slot, and the specific size of the set is configured or preconfigured by the system. For example, the size of the subbhannel may be determined by at least one of:

configuring network side equipment;

pre-configuring a terminal;

other terminal instructions;

the terminal decides itself.

The system defines different channel resources as a resource pool for the physical side link shared channel (Physical Sidelink Shared Channel, PSSCH) and the physical side link control channel (Physical Sidelink Control Channel, PSCCH). The resource allocation, perception and selection takes the Subchannel as the minimum unit. The PSCCH occupies resources which are continuous PRBs (not more than 25 RBs) with the smallest sequence number in each sub-channel allocated to the PSSCH, and the number of the PRBs is configured or preconfigured by the system. The transmission resource pool and the reception resource pool are respectively configured.

Optionally, the resource pool is determined by at least one of:

configuring network side equipment;

pre-configuring a terminal;

other terminal instructions;

the terminal decides itself.

In an alternative embodiment, the network side device may configure a resource pool for the UE through cell broadcast or dedicated radio resource control (Radio Resource Control, RRC) signaling, and the UE needs to monitor the resource pool for the sip link transmission.

Further, for each resource pool located in the shared frequency band, transmission resources of the terminal for performing the sip link communication in the resource pool can be defined based on the LBT monitoring result according to the target rule, so as to solve the problem of uncertainty of information transmission caused by the LBT mechanism.

Specifically, for a resource pool located in the shared frequency band, the terminal may determine a target transmission resource in the resource pool that may be used for performing the sidlink communication by the terminal according to the following item.

Mode 1: when the size of the resource pool is not larger than, i.e. smaller than or equal to, the size of the LBT bandwidth, i.e. at least part of the resource pool is located in the LBT bandwidth, the terminal can determine whether to transmit in the resource pool according to the LBT monitoring result corresponding to the resource pool, if the LBT monitoring corresponding to the resource pool is successful, the whole resource pool can be used for transmission, and if the LBT monitoring corresponding to the resource pool fails, the whole resource pool can not be used for transmission.

It should be noted that, when the size of the resource pool is not greater than, i.e., less than or equal to, the size of the LBT bandwidth, the number of LBT bandwidths corresponding to the resource pool is typically 1.

Wherein the size of the resource pool may be at least one of hertz Hz, RB, RE, subchannel, in an alternative embodiment, when the size of the resource pool is not greater than, i.e., less than or equal to, the size of the LBT bandwidth, the number of RBs of the resource pool is not greater than the number of RBs of the LBT bandwidth.

In another alternative embodiment, when the size of the resource pool is not greater than, i.e., less than or equal to, the size of the LBT bandwidth, the bandwidth of the resource pool is not greater than the bandwidth of the LBT bandwidth.

In yet another alternative embodiment, when the size of the resource pool is not greater than, i.e., less than or equal to, the size of the LBT bandwidth, the number of subshannels of the source pool is not greater than the number of subshannels of the LBT bandwidth.

Alternatively, when the size of the resource pool is not greater than, i.e., less than or equal to, the size of the LBT bandwidths, guard bandwidths may be configured between the LBT bandwidths to prevent the interference of the Sidelink communication between the different LBT bandwidths.

Alternatively, the terminal may determine the LBT bandwidth by at least one of:

configuring network side equipment;

pre-configuring a terminal;

other terminal instructions;

The terminal decides itself.

Alternatively, the LBT bandwidth for the Sidelink communication may be 20MHz.

Mode 2: when the size of the resource pool is larger than the size of the LBT bandwidths, that is, the resource pool corresponds to at least two LBT bandwidths, the terminal can determine the LBT bandwidths available for the terminal to perform the Sidelink communication in the resource pool according to the LBT monitoring result of each LBT bandwidth in the resource pool.

Wherein the size of the resource pool may be at least one of hertz Hz, RB, RE, subchannel, in an alternative embodiment, when the size of the resource pool is greater than the size of the LBT bandwidth, the RB number of the resource pool is greater than the RB number of the LBT bandwidth.

In another alternative embodiment, when the size of the resource pool is greater than the size of the LBT bandwidth, the bandwidth of the resource pool is greater than the bandwidth of the LBT bandwidth.

In yet another alternative embodiment, when the size of the resource pool is greater than the size of the LBT bandwidth, the number of subshannels of the resource pool is greater than the number of subshannels of the LBT bandwidth.

Optionally, when the size of the resource pool is larger than the size of the LBT bandwidths, a guard bandwidth may be configured between the LBT bandwidths to prevent the interference of the Sidelink communication between the different LBT bandwidths.

Alternatively, the terminal may determine the LBT bandwidth by at least one of:

configuring network side equipment;

Pre-configuring a terminal;

other terminal instructions;

the terminal decides itself.

Alternatively, the LBT bandwidth for the Sidelink communication may be 20MHz.

In this embodiment, a terminal determines, according to a target rule, a target transmission resource in a resource pool of a shared frequency band, where the target transmission resource is used for performing a sidlink communication by the terminal; wherein the target rule includes at least one of: determining LBT bandwidths in the resource pool, which can be used for the terminal to perform Sidelink communication, based on LBT monitoring results of each LBT bandwidth in the resource pool under the condition that the size of the resource pool is larger than that of the LBT bandwidths sent before listening; under the condition that the size of the resource pool is smaller than or equal to the size of the LBT bandwidth, if LBT monitoring of the resource pool is successful, determining that the resource pool can be used for the terminal to carry out Sidelink communication; and under the condition that the size of the resource pool is smaller than or equal to the size of the LBT bandwidth, if the LBT monitoring of the resource pool fails, determining that the resource pool is not available for the terminal to carry out the Sidelink communication. Therefore, when the terminal performs the Sidelink communication in the shared frequency band, the problem of determining the transmission resources of the terminal due to an LBT mechanism in the SL system can be solved by definitely determining the transmission resources of the terminal for performing the Sidelink communication in the resource pool of the shared frequency band, so that the reliability of the terminal for performing the Sidelink communication in the shared frequency band can be improved, and the problem of crowding the authorized frequency spectrum can be relieved.

It should be noted that, when the terminal performs the Sidelink communication in the shared frequency band, the LBT bandwidth may be set as a subchannel to perform the Sidelink communication of the terminal, so that the first-stage SCI may be directly utilized to implicitly indicate the transmission resource available for the Sidelink communication.

Optionally, in the case that the target rule includes the first rule, determining, according to the target rule, a target transmission resource in a resource pool of the shared frequency band includes:

if LBT monitoring results of all LBT bandwidths in the resource pool are successful, determining that all LBT bandwidths in the resource pool can be used for the terminal to carry out Sidelink communication;

and/or the number of the groups of groups,

if all LBT monitoring results corresponding to each LBT bandwidth in the resource pool fail, determining that each LBT bandwidth in the resource pool is unavailable for the terminal to carry out Sidelink communication;

and/or the number of the groups of groups,

if the LBT monitoring result of part of the LBT bandwidths in the resource pool is successful or fails, determining that the LBT bandwidths which are successfully monitored by the LBT in the resource pool can be used for the terminal to carry out the Sidelink communication, and determining that the LBT bandwidths which are failed to monitor by the LBT in the resource pool are not used for the terminal to carry out the Sidelink communication; or if the LBT monitoring result of part of the LBT bandwidths in the resource pool is successful or failed, determining that each LBT bandwidth in the resource pool can be used for Sidelink communication by the terminal under the condition that the ratio of the total size of the LBT bandwidths in the resource pool which are successfully monitored and the size of the resource pool is not smaller than a preset threshold; or if the LBT monitoring result of the partial LBT bandwidth in the resource pool is successful or failed, determining that the LBT bandwidth in the resource pool, which is successful in LBT monitoring, can be used for the terminal to perform the Sidelink communication under the condition that the ratio of the total size of the LBT bandwidths in the resource pool, which are successful in LBT monitoring, to the size of the resource pool is not smaller than a preset threshold, and determining that the LBT bandwidth in the resource pool, which is failed in LBT monitoring, is not used for the terminal to perform the Sidelink communication; or if the LBT monitoring result of part of the LBT bandwidths in the resource pool is successful or failed, determining that all the LBT bandwidths in the resource pool are unavailable for the terminal to carry out the Sidelink communication.

In this embodiment, the terminal may determine, according to the LBT monitoring result of each LBT bandwidth in the resource pool, a transmission resource available for the sidlink communication in the resource pool.

Case 1: if the LBT monitoring results corresponding to each LBT bandwidth in the resource pool are successful, the whole resource pool can be used for transmission.

Case 2: if the LBT monitoring results corresponding to each LBT bandwidth in the resource pool fail, the whole resource pool cannot be used for transmission.

Case 3: if the result of the LBT monitoring corresponding to the partial LBT bandwidth in the resource pool is successful or failed, that is, the LBT monitoring corresponding to the partial LBT bandwidth is successful, and the LBT monitoring corresponding to the other partial LBT bandwidth is failed, for example, the resource pool includes 5 LBT bandwidths, namely, LBT bandwidth 1, LBT bandwidth 2, LBT bandwidth 3, LBT bandwidth 4 and LBT bandwidth 5, respectively, LBT bandwidth 1, LBT bandwidth 3, LBT bandwidth 4 and LBT bandwidth 5 are successful, and the LBT monitoring corresponding to LBT bandwidth 2 is failed, in this case, at least one of the following manners can be adopted to determine the LBT bandwidth available for the terminal to perform the sidlink communication in the resource pool.

1) Only the LBT bandwidth that the LBT monitoring was successful can be used for transmission;

2) When the ratio of the total size of the LBT bandwidth and the size of the resource pool, which are successfully monitored by the LBT, is not less than, i.e. greater than or equal to, the preset threshold, in an alternative embodiment, it is determined that the entire resource pool can be used for transmission, so that the resource utilization can be improved. In another alternative embodiment, it is determined that only LBT bandwidth for which LBT monitoring was successful can be used for transmission. The preset threshold may be set according to practical situations, for example, set to 90%, which is not specifically limited herein.

3) The entire resource pool cannot be used for transmission.

In this embodiment, when the size of the resource pool is larger than the size of the LBT bandwidth, the terminal can determine the transmission resource of the terminal due to the LBT mechanism under the SL system by definitely using the LBT bandwidth for the terminal to perform the sip link communication, thereby avoiding the influence on the transmission behavior of the terminal under the SL system, improving the reliability of the terminal to perform the sip link communication on the shared frequency band, and alleviating the congestion problem of the authorized spectrum.

Optionally, in the case that the LBT monitoring result of the partial LBT bandwidth in the resource pool is successful or failed, and the LBT bandwidth in the resource pool, where the LBT monitoring result is successful, may be used for performing the sidlink communication by the terminal, the LBT bandwidth for performing the sidlink communication by the terminal needs to be frequency domain continuous.

Optionally, the method further comprises:

based on the first information, adjusting target transmission resources in the resource pool, which can be used for the terminal to carry out Sidelink communication;

the first information includes at least one of:

channel state information, CSI;

channel busy rate CBR;

channel occupancy CR;

quality of service QoS;

a resource selection mode;

a covered state;

a transmission type;

Hybrid automatic repeat request HARQ types;

a transmission priority;

service type.

In this embodiment, when the size of the resource pool is greater than the size of the LBT bandwidth, the terminal may perform policy switching according to at least one of channel state information (Channel State Information, CSI), channel busy rate (Channel Busy Ratio, CBR), channel occupancy (Channel Occupancy Ratio, CR), quality of service (Quality of Service, qoS), resource selection mode, coverage status, transmission type (cast type), hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) type, transmission priority, and traffic type, so as to adjust a target transmission resource available for the terminal to perform the sidlink communication in the resource pool.

For example, if the LBT monitoring results corresponding to each LBT bandwidth in the resource pool are all successful, when the CSI reflects that the current channel quality is better, or the CBR reflects that the channel is not busy, a policy "the entire resource pool can be used for transmission" may be adopted to determine the transmission resources of the terminal for performing the sidlink communication in the resource pool located in the shared frequency band. When the CSI reflects that the current channel quality is poor or the CBR reflects that the channel is busy, the policy may be switched to determine that the entire resource pool is not available for transmission.

In this embodiment, the target transmission resource available for the terminal to perform the sidlink communication in the resource pool is adjusted based on the first information. Thus, the reliability and the flexibility of the Sidelink communication on the shared frequency band can be improved.

Referring to fig. 2, fig. 2 is a second schematic flow chart of a side link Sidelink transmission method according to an embodiment of the present application, as shown in fig. 2, the method includes the following steps:

step 201, sending second information, where the second information is used to indicate at least one of an LBT state corresponding to the resource pool and a channel occupation time COT of performing a sidlink communication by the terminal in the resource pool, where the LBT state is used to characterize an LBT monitoring result corresponding to the resource pool;

wherein the second information includes at least one of:

first primary side link control information SCI;

second stage SCI.

In this embodiment, the terminal specifies how to perform LBT indication, and the terminal may perform LBT indication through the first-stage side link control information (Sidelink control information, SCI) and/or the second-stage SCI, and send second information carrying LBT indication information to other terminals and/or network side devices, where the LBT indication may include an LBT state corresponding to the resource pool, and/or an indication of channel occupation time, so as to preempt frequency domain resources located in the shared frequency band.

The first level SCI may be SCI format 1-A or a newly defined first level SCI, and the second level SCI may be SCI format2-A, SCI format 2-B or a newly defined second level SCI.

The indication of the LBT state corresponding to the resource pool may include:

indicating the LBT monitoring result of the resource pool as a whole under the condition that the size of the resource pool is not larger than the size of the LBT bandwidth;

and/or the number of the groups of groups,

indicating the LBT monitoring result of the resource pool as a whole under the condition that the size of the resource pool is larger than the size of the LBT bandwidth; or, in case that the size of the resource pool is larger than that of the LBT bandwidth, indicating the LBT monitoring result of each LBT bandwidth in the resource pool.

In this embodiment, the terminal explicitly indicates how to perform LBT, and sends the second information carrying LBT indication information, so that preemption of spectrum resources located in the shared frequency band can be achieved, reliability of performing sidlink communication on the shared frequency band by the terminal is improved, and congestion problem of the authorized spectrum can be relieved.

Optionally, the method further comprises any one of the following:

if the second information includes a first-stage SCI, indicating target LBT status information based on reservation indication information of an indication field in the first-stage SCI, wherein the reservation indication information is used for indicating a second-stage SCI format, the target LBT status information is used for indicating that a target monitoring result is completely or partially successful, and the target monitoring result includes an LBT monitoring result of each LBT bandwidth in the resource pool or the resource pool;

If the second information includes a first-stage SCI, indicating an LBT state of each LBT bandwidth in the resource pool based on a first target bit in the first-stage SCI, where, in a case where the first-stage SCI does not include a target indication field, the first target bit is located: at least one of a frequency domain resource allocation indication field, a time domain resource allocation indication field and a first added indication field, and in case that the first stage SCI includes the target indication field, the first target bit is located: the second indication domain is newly added in the first-stage SCI, and the target indication domain is used for indicating the frequency domain resources reserved by the terminal so that the terminal can perform Sidelink communication based on the reserved frequency domain resources;

if the second information includes a first stage SCI, and if the first stage SCI includes the target indication field and the LBT bandwidths of the terminals in the resource pool for performing the sidlink communication need to be frequency-domain continuous, indicating the LBT status of each LBT bandwidth in the resource pool based on the frequency domain resource allocation indication field in the first stage SCI, where, if the size of the LBT bandwidth is a subchannel, the LBT monitoring success LBT bandwidth information is: any one of a frequency domain resource with the largest corresponding frequency domain range in the reserved frequency domain resources indicated by the first-stage SCI, a frequency domain resource with the smallest corresponding frequency domain range in the reserved frequency domain resources indicated by the first-stage SCI, a union of the reserved frequency domain resources indicated by the first-stage SCI, and an intersection of the reserved frequency domain resources indicated by the first-stage SCI;

If the second information includes a second level SCI, indicating an LBT status of each LBT bandwidth in the resource pool based on a second target bit in the second level SCI, where the second target bit is located: a third indication field in the second level SCI.

Optionally, in the case that the second information includes a first stage SCI and indicates an LBT status of each LBT bandwidth in the resource pool based on a first target bit in the first stage SCI, the first target bit satisfies at least one of:

in the case that the LBT bandwidths of the terminals for performing the sip communication in the resource pool need to be frequency domain continuous, the number of bits for indicating the LBT status of each LBT bandwidth is

Under the condition that LBT bandwidths of the terminal for Sidelink communication in the resource pool do not need frequency domain continuity, the bit number of the LBT state for indicating each LBT bandwidth in the resource pool is N;

wherein N is the number of LBT bandwidths in the resource pool; or alternatively, the process may be performed,

in the case where the second information includes a second level SCI and indicates an LBT status of each LBT bandwidth in the resource pool based on a second target bit in the second level SCI, the second target bit satisfies at least one of:

wherein N is the number of LBT bandwidths in the resource pool.

In the present embodiment, mode 1: the LBT monitoring result of the resource pool may be indicated as a whole.

In mode 1, target LBT state information for indicating LBT monitoring results of the resource pool as a whole may be indicated based on reservation indication information of an indication field for indicating the second-stage SCI format in the first-stage SCI.

In an alternative embodiment, table 1 is an indication field information table for indicating the second-level SCI format and indicating the LBT status in the first-level SCI, and the indication field for indicating the second-level SCI format is denoted by Value of 2nd-stage SCI format field, and as shown in table 1, two indication information are reserved in the indication field for indicating the second-level SCI format in the first-level SCI, which is information indicated when the indication field is 10 and 11, respectively.

When the LBT monitoring result of the resource pool or the LBT monitoring result of each LBT bandwidth in the resource pool is all successful, the Value of2nd-stage SCI format field in SCI format 1-A can be set to be 10; when the LBT monitoring result of the resource pool or the LBT monitoring result of each LBT bandwidth in the resource pool is partially successful, setting the Value of2nd-stage SCI format field in SCI format 1-A to be 11.

Table 1 is an indication field information table for indicating the second SCI format in the first SCI and indicating LBT status

In another alternative embodiment, when the LBT monitoring result of the resource pool or the LBT monitoring result of each LBT bandwidth in the resource pool is all successful, the Value of2nd-stage SCI format field in SCI format 1-a may be set to 11; when the LBT monitoring result of the resource pool or the LBT monitoring result of each LBT bandwidth in the resource pool is partially successful, setting the Value of2nd-stage SCI format field in SCI format 1-A to be 10.

Note that, when the LBT monitoring result of the resource pool or the LBT monitoring result of each LBT bandwidth in the resource pool fails, the sidlink communication is not performed, so that LBT indication may not be performed.

Mode 2: in the case that the size of the resource pool is larger than the size of the LBT bandwidth, the LBT monitoring result corresponding to each LBT bandwidth may be indicated, where the number of LBT bandwidths in the resource pool is N.

In an alternative embodiment, the LBT monitoring result corresponding to each LBT bandwidth may be indicated by the first level SCI (SCI format 1-a).

Alternatively, in the case where SCI format 1-a does not include the target indication field and the LBT bandwidths for transmission need to be frequency domain continuous, the LBT status of each LBT bandwidth in the resource pool may be indicated by using the first target bit in the first stage SCI. The first target bit may be located in at least one of a frequency domain resource allocation indication domain, a time domain resource allocation indication domain, and a first indication domain newly added in SCI format 1-a. The target indication field is used for indicating the reserved frequency domain resources of the terminal, so that the terminal can perform the sip link communication based on the reserved frequency domain resources, that is, SCI format 1-a cannot perform the reservation of the frequency domain resources, that is, does not perform the reservation of the resources.

That is, the first target bit may be a bit in the frequency domain resource allocation indication domain or a bit in the time domain resource allocation indication domain; alternatively, the first target bits may include at least part of bits in the frequency domain resource allocation indication field and the time domain resource allocation indication field; alternatively, the first target bit may be a reserved bit in the first indication field, or the like, which is not specifically limited herein.

In the case that the LBT bandwidth for transmission requires frequency domain continuity, the number of bits corresponding to the first target bit may beThe LBT status of each LBT bandwidth in the resource pool may be indicated by indicating the LBT bandwidth that is initially available for transmission and the number of LBT bandwidths that are consecutively available for transmission. For example, the LBT status indicating the LBT bandwidth 3, LBT bandwidth 4, and LBT bandwidth 5 that are available for transmission may indicate that the initial LBT bandwidth available for transmission is LBT bandwidth 3, and indicate that the number of LBT bandwidths continuously available for transmission is 3.

For example, when N is 5, i.e. the resource pool corresponds to 5 LBT bandwidths, the number of bits corresponding to the first target bit passesCalculated as 4. The terminal can utilize the pre-acquired LBT status of each LBT bandwidth in the resource poolAnd determining the bit value of the first target bit according to the mapping relation between the bit value corresponding to the bit number and the LBT state so as to indicate the LBT state of each LBT bandwidth in the resource pool. For example, when the LBT bandwidth required to indicate the start of available transmission is LBT bandwidth 3 and the number of consecutively available LBT bandwidths is 3, the bit value of the first target bit is determined to be "XXXX" using the mapping relationship.

Alternatively, in the case where SCI format1-a does not include the target indication field and the LBT bandwidths for transmission do not need to be contiguous in the frequency domain, the first target bit in the first stage SCI may be used to indicate the LBT status of each LBT bandwidth in the resource pool. The first target bit may be located in at least one of a frequency domain resource allocation indication domain, a time domain resource allocation indication domain, and a first indication domain newly added in SCI format 1-a.

In the case that the LBT bandwidth used for transmission does not need to be frequency domain continuous, the number of bits corresponding to the first target bit may be N, and the LBT monitoring result of the LBT bandwidth may be indicated by indicating the LBT monitoring result of one LBT bandwidth by one bit. For example, when the LBT monitoring of the LBT bandwidth is successful, the indication bit corresponding to the LBT bandwidth is set to 1, and when the LBT monitoring of the LBT bandwidth fails, the indication bit corresponding to the LBT bandwidth is set to 0.

Alternatively, in the case that SCI format 1-a includes a target indication field, that is, SCI format 1-a may indicate reserved frequency domain resources, and LBT bandwidths for transmission do not need to be contiguous in frequency domain, the LBT status of each LBT bandwidth in the resource pool may be indicated based on the first target bit in the first stage SCI. Wherein the first target bit is located: a second indication field newly added in the first stage SCI. For example, the LBT status of each LBT bandwidth in the resource pool may be indicated by a reserved bit in the newly added second indication field in the first stage SCI.

Alternatively, in the case that SCI format 1-a includes a target indication field, that is, SCI format 1-a may indicate reserved frequency domain resources, and LBT bandwidths for transmission need frequency domain continuity, the LBT status of each LBT bandwidth in the resource pool may be implicitly indicated based on the frequency domain resource allocation indication field in the first stage SCI.

At this time, the size of the (pre) configured LBT bandwidth is a sub-channel, and the LBT bandwidth information of the LBT monitoring success is: any one of a frequency domain resource with the largest corresponding frequency domain range in the reserved frequency domain resources indicated by the first-stage SCI, a frequency domain resource with the smallest corresponding frequency domain range in the reserved frequency domain resources indicated by the first-stage SCI, a union of the reserved frequency domain resources indicated by the first-stage SCI, and an intersection of the reserved frequency domain resources indicated by the first-stage SCI.

For example, when the first stage SCI indicates, through the target indication field, that two additional frequency domain resources are reserved, for example, that the frequency domain resources in the frequency domain range corresponding to the reserved bandwidth 1 and the frequency domain resources in the frequency domain range corresponding to the bandwidth 3, the bandwidth 4, and the bandwidth 5 are reserved, then the bandwidth 3, the bandwidth 4, and the bandwidth 5 may be implicitly indicated as LBT bandwidths for which LBT monitoring is successful (i.e., LBT bandwidth information for which LBT monitoring is successful is the frequency domain resource with the largest corresponding frequency domain range in the reserved frequency domain resources), or the bandwidth 1 is LBT bandwidth for which LBT monitoring is successful (i.e., LBT bandwidth information for which LBT monitoring is successful is the frequency domain resource with the smallest corresponding frequency domain range in the reserved frequency domain resources), or the bandwidth 1, the bandwidth 3, the bandwidth 4, and the bandwidth 5 may be implicitly indicated as LBT bandwidths for which LBT monitoring is successful (i.e., LBT bandwidth information for which LBT monitoring is the union of the frequency domain resources with the reserved frequency domain resources).

For another example, when the first stage SCI reserves two additional frequency domain resources through the target indication domain indication, for example, the bandwidth 1 corresponds to the frequency domain resource in the frequency domain range and the bandwidth 1, the bandwidth 2 corresponds to the frequency domain resource in the frequency domain range, and the bandwidth 3 corresponds to the bandwidth 3, it may implicitly indicate that the bandwidth 1, the bandwidth 2, and the bandwidth 3 are LBT bandwidths with successful LBT monitoring, or the bandwidth 1 is LBT bandwidth with successful LBT monitoring.

Also for example, when the first stage SCI indicates, through the target indication field, that two additional frequency domain resources are reserved, for example, a frequency domain resource in a frequency domain range corresponding to bandwidth 3 and bandwidth 4 and a frequency domain resource in a frequency domain range corresponding to bandwidth 1, bandwidth 2 and bandwidth 3, bandwidth 3 may be implicitly indicated as the LBT bandwidth where LBT monitoring is successful (i.e., LBT bandwidth information where LBT monitoring is successful is an intersection of reserved frequency domain resources).

In another alternative embodiment, the LBT monitoring result corresponding to each LBT bandwidth may be indicated by the second stage SCI.

Alternatively, the LBT status of each LBT bandwidth in the resource pool may be indicated based on a second target bit in the second stage SCI, where the second target bit may be located: a third indication field in the second level SCI. For example, the reserved bits in the third indication field in the second stage SCI may be used to indicate the LBT status of each LBT bandwidth in the resource pool, and the number of bits corresponding to the second target bit is set to be M.

In case the LBT bandwidth for transmission needs to be frequency domain continuous,the LBT status of each LBT bandwidth in the resource pool may be indicated by indicating the LBT bandwidth that is initially available for transmission and the number of LBT bandwidths that are consecutively available for transmission. For example, the LBT status indicating the LBT bandwidth 3, LBT bandwidth 4, and LBT bandwidth 5 that are available for transmission may indicate that the initial LBT bandwidth available for transmission is LBT bandwidth 3, and indicate that the number of LBT bandwidths continuously available for transmission is 3.

In the case where the LBT bandwidth for transmission does not require frequency domain continuity, m=n, the LBT monitoring result of the LBT bandwidth may be indicated by indicating the LBT monitoring result of one LBT bandwidth by one bit. For example, when the LBT monitoring of the LBT bandwidth is successful, the indication bit corresponding to the LBT bandwidth is set to 1, and when the LBT monitoring of the LBT bandwidth fails, the indication bit corresponding to the LBT bandwidth is set to 0.

Alternatively, the second level SCI may be SCI format 2-A, SCI format 2-B, or a newly defined second level SCI.

In this embodiment, the terminal explicitly indicates, based on the first-stage SCI and/or the second-stage SCI, how to indicate the LBT state corresponding to the resource pool or the LBT state corresponding to each LBT bandwidth in the resource pool, so as to determine the relevant behavior of the terminal when performing the sidlink communication on the shared frequency band, further improve the reliability of the terminal when performing the sidlink communication on the shared frequency band, and also alleviate the congestion problem of the authorized spectrum.

Optionally, the method further comprises any one of the following:

if the second information comprises a first-stage SCI, indicating COT of the terminal for Sidelink communication in the resource pool based on reserved indication information of an indication field used for indicating a second-stage SCI format in the first-stage SCI;

If the second information comprises a first-stage SCI, indicating COT of the terminal in the resource pool for Sidelink communication based on a fourth indication field newly added in the first-stage SCI;

and if the second information comprises a second-level SCI, indicating COT of the terminal for Sidelink communication in the resource pool based on a fifth indication field in the second-level SCI.

In this embodiment, the COT may be obtained from at least one of:

configuring network side equipment;

pre-configuring;

other terminal instructions;

the terminal decides on its own.

In an alternative embodiment, the COT of the terminal in the resource pool for performing the sidlink communication may be indicated through the first stage SCI.

Alternatively, the COT of the terminal in the resource pool for performing the sidlink communication may be indicated based on the reservation indication information of the indication field in the first-stage SCI for indicating the second-stage SCI format. Table 2 is an indication field information table for indicating the second-stage SCI format and indicating the COT in the first-stage SCI format, and an indication field for indicating the second-stage SCI format is represented by Value of2nd-stage SCI format field, as shown in table 2, two indication information are reserved in the indication field for indicating the second-stage SCI format in the first-stage SCI, and are information indicated when the indication fields are 10 and 11, respectively.

When the channel occupation time is X, setting the Value of 2nd-stage SCI format field in SCI format 1-A to be 10; when the channel occupation time is Y, the Value of 2nd-stage SCI format field in SCI format 1-A is set to 11.

Table 2 is an indication field information table for indicating the second SCI format in the first SCI and indicating COT

Value of 2nd-stage SCI format field	Second level SCI format
		00	SCI format 2-A
01	SCI format 2-B
		10	X
11	Y

In another alternative embodiment, the COT of the terminal in the resource pool for performing the sidlink communication may be indicated based on a fourth indication field newly added in the first stage SCI. For example, the reserved bits in the fourth indication field newly added in the first stage SCI may be used to indicate the COT of the terminal performing the sidlink communication in the resource pool, where the number of bits corresponding to the indicated COT may be R, and R may be set according to the actual situation, as shown in table 3, where table 3 is a COT indication table when r=1.

COT indicator when R=1

The value of the indication COT bit in the fourth indication field	COT
		0	5ms
1	10ms

In yet another alternative embodiment, the COT of the terminal in the resource pool for performing the sidlink communication may be indicated based on a fifth indication field in the second level SCI. For example, the reserved bits in the fifth indication field in the second stage SCI may be used to indicate the COT of the terminal performing the sidlink communication in the resource pool, the number of bits corresponding to the indicated COT may be S, and S may be set according to the actual situation, as shown in table 4, where table 4 is a COT indication table when s=1.

COT indicator when S=1

The value in the fifth indication field indicating the COT bit	COT
		0	5ms
1	10ms

In this embodiment, the terminal explicitly indicates, based on the first-stage SCI and/or the second-stage SCI, how to instruct the terminal in the resource pool to perform COTs of the sidlink communication, so that it is possible to explicitly determine the relevant behavior of the terminal when performing the sidlink communication on the shared frequency band, further, it is possible to improve the reliability of the terminal performing the sidlink communication on the shared frequency band, and also it is possible to alleviate the congestion problem of the licensed spectrum.

In the method for transmitting the sip link provided by the embodiment of the present application, the execution body may be a sip link transmission device. In the embodiment of the present application, a method for performing a sip link transmission by a sip link transmission device is taken as an example, which describes a sip link transmission device provided by the embodiment of the present application.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a side link Sidelink transmission device according to an embodiment of the present application, and as shown in fig. 3, the device includes:

a determining module 301, configured to determine, according to a target rule, a target transmission resource in a resource pool of a shared frequency band, where the target transmission resource is used for performing a sidlink communication by the terminal;

Optionally, in the case that the target rule includes a first rule, the determining module 301 is specifically configured to:

if LBT monitoring results of all LBT bandwidths in the resource pool are successful, determining that all LBT bandwidths in the resource pool can be used for the terminal to carry out Sidelink communication; and/or the number of the groups of groups,

if all LBT monitoring results corresponding to each LBT bandwidth in the resource pool fail, determining that each LBT bandwidth in the resource pool is unavailable for the terminal to carry out Sidelink communication; and/or the number of the groups of groups,

If the LBT monitoring result of part of the LBT bandwidths in the resource pool is successful or fails, determining that the LBT bandwidths which are successfully monitored by the LBT in the resource pool can be used for the terminal to carry out the Sidelink communication, and determining that the LBT bandwidths which are failed to monitor by the LBT in the resource pool are not used for the terminal to carry out the Sidelink communication; or alternatively, the first and second heat exchangers may be,

if the LBT monitoring result of part of the LBT bandwidths in the resource pool is successful or fails, determining that each LBT bandwidth in the resource pool can be used for Sidelink communication by the terminal under the condition that the ratio of the total size of the LBT bandwidths in the resource pool which are successfully monitored to the size of the resource pool is not smaller than a preset threshold; or alternatively, the first and second heat exchangers may be,

if the LBT monitoring result of part of the LBT bandwidths in the resource pool is successful or failed, determining that the LBT bandwidths in the resource pool with the successful LBT monitoring can be used for the terminal to carry out Sidelink communication under the condition that the ratio of the total size of the LBT bandwidths in the resource pool with the successful LBT monitoring to the size of the resource pool is not smaller than a preset threshold, and determining that the LBT bandwidths in the resource pool with the failed LBT monitoring are not used for the terminal to carry out Sidelink communication; or alternatively, the first and second heat exchangers may be,

and if the LBT monitoring result of part of the LBT bandwidths in the resource pool is successful or fails, determining that all the LBT bandwidths in the resource pool are unavailable for the terminal to carry out the Sidelink communication.

Optionally, the apparatus further includes:

the adjusting module is used for adjusting target transmission resources which can be used for the terminal to carry out Sidelink communication in the resource pool based on the first information;

the first information includes at least one of:

channel state information, CSI;

channel busy rate CBR;

channel occupancy CR;

quality of service QoS;

a resource selection mode;

a covered state;

a transmission type;

hybrid automatic repeat request HARQ types;

a transmission priority;

service type.

Optionally, the resource pool and/or LBT bandwidth is determined by at least one of:

configuring network side equipment;

pre-configuring;

other terminal instructions;

the terminal decides on its own.

Optionally, the apparatus further includes:

a sending module, configured to send second information, where the second information is used to indicate at least one of an LBT state corresponding to the resource pool and a channel occupation time COT of performing sidlink communication by the terminal in the resource pool, where the LBT state is used to characterize an LBT monitoring result corresponding to the resource pool;

Wherein the second information includes at least one of:

first primary side link control information SCI;

second stage SCI.

Optionally, the apparatus further includes:

the first indication module is configured to indicate target LBT status information if the second information includes a first-stage SCI, based on reservation indication information of an indication field in the first-stage SCI, where the reservation indication information is used to indicate a second-stage SCI format, where the target LBT status information is used to indicate that a target monitoring result is all or partially successful, and the target monitoring result includes an LBT monitoring result of the resource pool or each LBT bandwidth in the resource pool;

a second indication module, configured to indicate, if the second information includes a first stage SCI, an LBT state of each LBT bandwidth in the resource pool based on a first target bit in the first stage SCI, where, in a case where the first stage SCI does not include a target indication field, the first target bit is located: at least one of a frequency domain resource allocation indication field, a time domain resource allocation indication field and a first added indication field, and in case that the first stage SCI includes the target indication field, the first target bit is located: the second indication domain is newly added in the first-stage SCI, and the target indication domain is used for indicating the frequency domain resources reserved by the terminal so that the terminal can perform Sidelink communication based on the reserved frequency domain resources;

A third indication module, configured to, if the second information includes a first stage SCI, and the first stage SCI includes the target indication field, and when the LBT bandwidths of the terminals in the resource pool for performing the sidlink communication need to be frequency-domain continuous, indicate, based on the frequency domain resource allocation indication field in the first stage SCI, an LBT status of each LBT bandwidth in the resource pool, where, when the size of the LBT bandwidth is a subchannel, LBT bandwidth information that LBT monitoring is successful is: any one of a frequency domain resource with the largest corresponding frequency domain range in the reserved frequency domain resources indicated by the first-stage SCI, a frequency domain resource with the smallest corresponding frequency domain range in the reserved frequency domain resources indicated by the first-stage SCI, a union of the reserved frequency domain resources indicated by the first-stage SCI, and an intersection of the reserved frequency domain resources indicated by the first-stage SCI;

a fourth indication module, configured to indicate, if the second information includes a second level SCI, an LBT status of each LBT bandwidth in the resource pool based on a second target bit in the second level SCI, where the second target bit is located: a third indication field in the second level SCI.

wherein N is the number of LBT bandwidths in the resource pool.

Optionally, the method further comprises any one of the following:

Optionally, the LBT bandwidth is set as a subchannel to perform the sidlink communication of the terminal.

The device for transmitting the sip file in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal.

The sip link transmission device provided by the embodiment of the present application can implement each process implemented by the method embodiments of fig. 1 and fig. 2, and achieve the same technical effects, so that repetition is avoided, and no further description is provided herein.

Optionally, as shown in fig. 4, the embodiment of the present application further provides a communication device 400, including a processor 401 and a memory 402, where the memory 402 stores a program or an instruction that can be executed on the processor 401, for example, the program or the instruction implement each step of the method embodiment of fig. 1 and fig. 2 when executed by the processor 401, and achieve the same technical effects.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the processor is used for determining target transmission resources of a resource pool in a shared frequency band according to a target rule, the target transmission resources are used for performing the Sidelink communication by the terminal, the communication interface is used for sending second information, the second information is used for indicating at least one of an LBT state corresponding to the resource pool and a channel occupation time COT of the Sidelink communication by the terminal in the resource pool, and the LBT state is used for representing an LBT monitoring result corresponding to the resource pool. The terminal embodiment corresponds to the method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the terminal embodiment and can achieve the same technical effect. Specifically, fig. 5 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 500 includes, but is not limited to: at least some of the components of the radio frequency unit 501, the network module 502, the audio output unit 503, the input unit 504, the sensor 505, the display unit 506, the user input unit 507, the interface unit 508, the memory 509, and the processor 510.

Those skilled in the art will appreciate that the terminal 500 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 510 via a power management system so as to perform functions such as managing charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 5 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 504 may include a graphics processing unit (Graphics Processing Unit, GPU) 5041 and a microphone 5042, with the graphics processor 5041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 506 may include a display panel 5061, and the display panel 5061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 507 includes at least one of a touch panel 5071 and other input devices 5072. Touch panel 5071, also referred to as a touch screen. Touch panel 5071 may include two parts, a touch detection device and a touch controller. Other input devices 5072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 501 may transmit the downlink data to the processor 510 for processing; in addition, the radio frequency unit 501 may send uplink data to the network side device. Typically, the radio frequency unit 501 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 509 may be used to store software programs or instructions as well as various data. The memory 509 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 509 may include volatile memory or nonvolatile memory, or the memory 509 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 509 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 510 may include one or more processing units; optionally, the processor 510 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 510.

The terminal provided by the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 1 and fig. 2, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, where the program or the instruction realizes each process of the embodiments of the methods of fig. 1 and fig. 2 when executed by a processor, and the process can achieve the same technical effect, so that repetition is avoided and no detailed description is given here.

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

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to run a program or instructions, so as to implement each process of the embodiments of the methods of fig. 1 and fig. 2, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

Embodiments of the present application further provide a computer program product stored in a storage medium, where the computer program product is executed by at least one processor to implement the respective processes of the method embodiments of fig. 1 and fig. 2, and achieve the same technical effects, and are not repeated herein.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. The side link Sidelink transmission method is characterized by being applied to a terminal and comprising the following steps:

the third rule is: if the size of the resource pool is smaller than or equal to the size of the LBT bandwidth, determining that the resource pool is unavailable for the terminal to carry out Sidelink communication if the LBT monitoring of the resource pool fails;

the method further comprises the steps of:

transmitting second information, where the second information is used to indicate at least one of an LBT state corresponding to the resource pool and a channel occupation time COT of performing sidlink communication by the terminal in the resource pool, where the LBT state is used to characterize an LBT monitoring result corresponding to the resource pool;

Wherein the second information includes at least one of:

first primary side link control information SCI;

a second stage SCI;

the method further comprises any one of the following:

2. The method according to claim 1, wherein, in the case that the target rule includes the first rule, the determining, according to the target rule, the target transmission resource of the resource pool located in the shared frequency band includes:

and/or the number of the groups of groups,

3. The method of claim 2, wherein the LBT bandwidth for the terminal to perform the sidlink communication requires frequency domain continuity in a case where the LBT monitoring result of the partial LBT bandwidth in the resource pool is successful or failed and the LBT bandwidth in the resource pool that is successful in LBT monitoring is available for the terminal to perform the sidlink communication.

4. The method according to claim 2, wherein the method further comprises:

the first information includes at least one of:

channel state information, CSI;

channel busy rate CBR;

channel occupancy CR;

quality of service QoS;

a resource selection mode;

a covered state;

a transmission type;

hybrid automatic repeat request HARQ types;

a transmission priority;

service type.

5. The method according to claim 1, wherein the resource pool and/or LBT bandwidth is determined by at least one of:

configuring network side equipment;

pre-configuring;

other terminal instructions;

the terminal decides on its own.

6. The method of claim 1, wherein, in the case where the second information includes a first stage SCI and indicates an LBT status of each LBT bandwidth in the resource pool based on a first target bit in the first stage SCI, the first target bit satisfies at least one of:

wherein N is the number of LBT bandwidths in the resource pool;

or alternatively, the process may be performed,

wherein N is the number of LBT bandwidths in the resource pool.

7. The method of claim 1, further comprising any one of:

8. The method according to claim 1, wherein the method further comprises:

and setting the LBT bandwidth as a sub-channel to perform the Sidelink communication of the terminal.

9. The utility model provides a side link Sidelink transmission device which characterized in that is applied to the terminal, includes:

the apparatus further comprises:

wherein the second information includes at least one of:

first primary side link control information SCI;

a second stage SCI;

if the second information includes a first-stage SCI, indicating target LBT status information based on reservation indication information of an indication field in the first-stage SCI, where the reservation indication information is used to indicate a second-stage SCI format, where the target LBT status information is used to indicate that a target monitoring result is all or partially successful, and the target monitoring result includes an LBT monitoring result of each LBT bandwidth in the resource pool or the resource pool;

10. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the side link Sidelink transmission method according to any one of claims 1 to 8.

11. A readable storage medium, wherein a program or an instruction is stored on the readable storage medium, and when executed by a processor, the program or the instruction implements the side link Sidelink transmission method according to any one of claims 1 to 8.