CN116528380A

CN116528380A - Method and device for transmitting side link control information, storage medium and electronic device

Info

Publication number: CN116528380A
Application number: CN202310573353.XA
Authority: CN
Inventors: 曾裕
Original assignee: Shanghai Xingsi Semiconductor Co ltd
Current assignee: Shanghai Xingsi Semiconductor Co ltd
Priority date: 2023-05-19
Filing date: 2023-05-19
Publication date: 2023-08-01

Abstract

The application discloses a method and a device for transmitting side link control information, a storage medium and an electronic device, wherein the method comprises the following steps: acquiring LTE side link resource information through a long term evolution LTE module of a first terminal, wherein the LTE side link resource information is used for indicating LTE side link resources in a shared resource pool, and the LTE side link resources are resources used for LTE side link communication; generating target side link control information according to the LTE side link resource information, wherein the target side link control information comprises an indication domain for indicating the LTE side link resource; and sending the generated target side link control information to a second terminal through a new air interface NR module of the first terminal.

Description

Method and device for transmitting side link control information, storage medium and electronic device

Technical Field

The present invention relates to the field of computers, and in particular, to a method and apparatus for transmitting side link control information, a storage medium, and an electronic apparatus.

Background

Due to the shortage of spectrum resources available for sidelink communications and the gradual transition of long term evolution (Long term evolution, LTE) sidelink to New air interface (NR) sidelink (i.e., gradual decrease in the fraction of LTE sidelink and gradual increase in the fraction of NR sidelink), 3GPP (3 rd Generation PartnerProject, third generation partnership project) began to study sidelink co-channel coexistence techniques in Release-18. In performing the simultaneous co-channel of the sidelink, it is necessary to consider the type of terminal that can operate in the co-channel. For example, at least terminals of the first type, terminals of the second type and terminals of the third type should be considered. Wherein, the first class of terminals has both LTE and NRModule, the second class of terminals has only NRModule, and the third class of terminals has only LTE Module.

However, since the NR module cannot detect the LTE SCI, nor the LTE module can detect the NR SCI, the second-type terminals and the third-type terminals cannot perform side link control information (Sidelink control information, SCI) detection with each other, which makes the possibility of resource collision high. Therefore, when the transmission method of the side link control information in the related art is used for co-channel coexistence communication, the problem of resource conflict is easy to occur.

Disclosure of Invention

The embodiment of the application provides a transmission method and device of side link control information, a storage medium and an electronic device, so as to at least solve the problem that resource conflict is easy to occur when the transmission method of the side link control information in the related technology is used for co-existence communication with a channel.

According to an aspect of the embodiments of the present application, there is provided a method for transmitting side link control information, including: acquiring LTE side link resource information through a long term evolution LTE module of a first terminal, wherein the LTE side link resource information is used for indicating LTE side link resources in a shared resource pool, and the LTE side link resources are resources used for LTE side link communication; generating target side link control information according to the LTE side link resource information, wherein the target side link control information comprises an indication domain for indicating the LTE side link resource; and sending the generated target side link control information to a second terminal through a new air interface NR module of the first terminal.

According to another aspect of the embodiments of the present application, there is also provided a method for transmitting side link control information, including: receiving target side link control information sent by an NR module of a first terminal through a second terminal, wherein the target side link control information comprises an indication domain for indicating Long Term Evolution (LTE) side link resources in a shared resource pool, and the LTE side link resources are resources for LTE side link communication; and determining the LTE side link resources in the shared resource pool according to the received target side link control information.

According to still another aspect of the embodiments of the present application, there is further provided a transmission apparatus for side link control information, including: the LTE system comprises an acquisition unit, a first terminal and a second terminal, wherein the acquisition unit is used for acquiring LTE side link resource information through a long term evolution LTE module of the first terminal, the LTE side link resource information is used for indicating LTE side link resources in a shared resource pool, and the LTE side link resources are resources used for LTE side link communication; a generating unit, configured to generate target side link control information according to the LTE side link resource information, where the target side link control information includes an indication field for indicating the LTE side link resource; and the sending unit is used for sending the generated target side link control information to a second terminal through a new air interface NR module of the first terminal.

According to still another aspect of the embodiments of the present application, there is further provided a transmission apparatus for side link control information, including: a receiving unit, configured to receive, by using a second terminal, target side link control information sent by an NR module of a first terminal, where the target side link control information includes an indication field for indicating a long term evolution LTE side link resource in a shared resource pool, where the LTE side link resource is a resource for LTE side link communication; and the determining unit is used for determining the LTE side link resources in the shared resource pool according to the received target side link control information.

According to still another aspect of the embodiments of the present application, there is also provided a computer-readable storage medium having a computer program stored therein, wherein the computer program is configured to perform the above-described method of transmitting side link control information when run.

According to still another aspect of the embodiments of the present application, there is further provided an electronic device including a memory, a processor, and a computer program stored on the memory and executable on the processor, where the processor executes the above-mentioned method for transmitting the side link control information through the computer program.

In the embodiment of the application, the LTE module of the first terminal is used for detecting the LTE side link resource information and transmitting the LTE side link resource information to the second terminal, the LTE module of the first terminal is used for acquiring the LTE side link resource, and the NR module of the first terminal is used for transmitting the side link control information indicating the LTE side link resource to the second terminal, so that the second terminal can acquire the resource use condition of the LTE side link, so that resources which are likely to collide are avoided when the resources are used, and the problem that the resource collision is easy to occur when the transmission method of the side link control information in the related technology is used for co-channel coexistence communication is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the description of the embodiments or the prior art will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.

Fig. 1 is a schematic diagram of a hardware environment of a method for transmitting side link control information according to an embodiment of the present application;

fig. 2 is a flow chart of an alternative method for transmitting side link control information according to an embodiment of the present application;

FIG. 3 is a schematic diagram of an alternative different type of terminal according to an embodiment of the present application;

fig. 4 is a flow chart of another alternative method for transmitting side link control information according to an embodiment of the present application;

fig. 5 is a flow chart of yet another alternative method for transmitting side link control information according to an embodiment of the present application;

fig. 6 is a block diagram of an alternative side chain control information transmission device according to an embodiment of the present application;

fig. 7 is a block diagram of another alternative transmission device for side link control information according to an embodiment of the present application;

fig. 8 is a block diagram of an alternative electronic device according to an embodiment of the present application.

Detailed Description

In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that embodiments of the present application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

According to an aspect of the embodiments of the present application, a method for transmitting side link control information is provided. Alternatively, in the present embodiment, the above-described transmission method of the side link control information may be applied to a hardware environment constituted by the first terminal device 102, the second terminal device 104, and the server 106 as shown in fig. 1. As shown in fig. 1, the first terminal device 102, the second terminal device 104, and the server 106 are connected through a network.

The network may include, but is not limited to, at least one of: wired network, wireless network. The wired network may include, but is not limited to, at least one of: a wide area network, a metropolitan area network, a local area network, and the wireless network may include, but is not limited to, at least one of: WIFI, bluetooth. The first terminal device 102 and the second terminal device 104 may include, but are not limited to, a PC (Personal Computer ), a tablet, a smart phone, and the like. The first terminal device 102 and the second terminal device 104 may be the same type of device or different types of devices.

The method for transmitting the side link control information in the embodiment of the present application may be performed by the server 106, or may be performed by the first terminal device 102 or the second terminal device 104, or may be performed jointly by the server 106 and the first terminal device 102 and/or the second terminal device 104. Taking the transmission method of the side link control information in the present embodiment performed by the first terminal device 102 (transmitting terminal) as an example, fig. 2 is a schematic flow chart of an alternative transmission method of the side link control information according to the embodiment of the present application, as shown in fig. 2, the flow of the method may include the following steps:

Step S202, obtaining LTE side link resource information through a long term evolution LTE module of a first terminal, wherein the LTE side link resource information is used for indicating LTE side link resources in a shared resource pool, and the LTE side link resources are resources used for LTE side link communication.

The transmission method of the side link control information in the embodiment can be applied to the scene of acquiring the use condition of each other resource among different terminals. Here, the different terminals refer to terminals suitable for different communication types, such as terminals suitable for LTE sidelink communication due to having an LTE module, terminals suitable for NR sidelink communication due to having an NR module, and terminals simultaneously suitable for LTE sidelink and NR sidelink communication due to having both an LTE module and an NR module. The resource usage refers to the time-frequency resources used by the terminal.

Since the spectrum resources available for sidelink communication are tense, and LTE sidelink is gradually transitioning to NR sidelink (i.e., the LTE sidelink market share gradually decreases and the NR sidelink market share gradually increases), 3GPP starts to study the sidelink co-channel coexistence technique in Release-18. One premise of this technique is that the performance of each RAT (RadioAccess Technology ) should not be worse after co-channel coexistence than when each RAT is deployed alone. Furthermore, the technology should not affect the existing LTE sidelink protocol (i.e., transparent to LTE sidelink users), and the technical enhancements/changes involved are only directed to NR sidelink.

Specifically, there are two currently mainstream schemes for co-channel coexistence: one is a static/semi-static coexistence scheme, the main principle is that the resource pool of LTE sidelink and the resource pool of NR sidelink are multiplexed in the time domain and/or the frequency domain; the other is a dynamic coexistence scheme, i.e. the resource pools of LTE sidelink and NR sidelink are not distinguished, and both work in the same resource pool.

And for terminal types capable of operating in co-channel coexistence, at least terminals of the first, second and third types should be considered. As shown in fig. 3, the first class of terminals has both LTE and NR modules, the second class of terminals has only NR modules, and the third class of terminals has only LTE modules. Correspondingly, the first type of terminal can perform LTE sidelink detection through the LTE module, and the detection result is shared to the NR module in the second type of terminal so as to assist the NR module in resource selection.

In order to ensure that three terminals can work normally under the coexistence of the same channel, it is necessary to avoid that different types of terminals use the same time-frequency resource as much as possible so as to reduce resource conflict. However, since the NR module cannot detect the LTE SCI, the LTE module cannot detect the NR SCI, and the second type of terminal and the third type of terminal cannot detect the SCI, and thus cannot acquire the resource usage situation of each other, there is a high possibility that the second type of terminal and the third type of terminal use the same time-frequency resource, which results in a high possibility of resource collision.

Currently, to enable resource usage between different terminals to be obtained, toyota corporation proposes in documents R1-2300380 that SCI mutual detection mechanisms between different types of terminals should be studied. In addition, other detailed schemes are not available so that different terminals can acquire each other's resource usage.

However, for the SCI mutual detection mechanism proposed by the Toyota corporation, in order to implement SCI mutual detection between the LTE sidelink terminal and the NR sidelink terminal, a major modification is made to the existing protocol, which involves complicated technical details, and increases the communication overhead of the terminal. In addition, this mechanism requires modification of the LTE sidelink protocol and thus does not fully meet current standardization guidelines. However, in the co-channel coexistence scenario, if the resource usage of each other cannot be obtained between different types of terminals, this will reduce the communication reliability.

In order to at least partially solve the above-mentioned problem, in this embodiment, by designing the second-stage SCI (i.e., SCI format 2-C, also referred to as SCI format 2-C) in the NR sidelink, the second terminal can obtain the resource reservation situation of the third-class terminal and other first-class terminals by receiving/demodulating the SCI sent by the first terminal, so that the probability of resource collision between the terminals is reduced and the communication reliability is improved in the co-channel coexistence scenario. Here, the resource reservation situation of the terminal refers to the resource situation used by the terminal. The first terminal may be a terminal of the first type described above.

The above design of the second-stage SCI in the NR sidelink may be to add and modify the existing indication field of the second-stage SCI to implement SCI format 2-C multiplexing, so that the SCI format 2-C may indicate LTE sidelink resource usage/reservation. The above design of the second level SCI in the NR sidelink may also be to design a new second level SCI, for example, SCI format 2-D, so that the SCI format 2-D may indicate LTE sidelink resource usage/reservation.

In this embodiment, the LTE side chain resource information may be obtained through the LTE module of the first terminal. Here, the LTE side link resource information may be used to indicate LTE side link resources in the shared resource pool, where the LTE side link resources are resources for LTE side link communications. The shared resource pool refers to a resource pool in which all of the first class of terminals, the second class of terminals and the third class of terminals can use resources.

Optionally, the LTE side link resource information obtained by the LTE module of the first terminal may be side link resources used by the LTE module of the third type terminal and other first type terminals, or may be side link resources used by the LTE module of the first type terminal (i.e., the first terminal itself).

Step S204, generating target side link control information according to the LTE side link resource information, wherein the target side link control information comprises an indication domain for indicating the LTE side link resource.

In this embodiment, the target-side link control information may be generated according to the detected LTE-side link resource information, and in order to achieve the purpose that the second terminal can obtain the resource usage/reservation situations of the third class terminal and other first class terminals by receiving/demodulating the SCI sent by the first terminal, the generated target-side link control information may be designed correspondingly so as to be included in the side link control information (i.e., the aforementioned second-level SCI) that can be sent by the NR module. Here, the second terminal may be the aforementioned second type terminal, or may be a second type terminal and other first type terminals than the aforementioned first terminal.

The generated target-side link control information may include an indication field for indicating LTE-side link resources. Correspondingly, the corresponding design of the generated target side link control information may be a design of an indication field for indicating the LTE side link resource. By designing the indication domain for indicating the LTE side chain resource, the condition that the second-stage SCI in the NR sidelink indicates the LTE sidelink resource reservation can be realized.

Step S206, the generated target side link control information is sent to the second terminal through the new air interface NR module of the first terminal.

And for the generated target side link control information comprising the indication domain for indicating the LTE side link resource, the side link control information can be sent to the second terminal through the NR module of the first terminal so as to acquire the LTE side link resource reservation condition by the second terminal. Correspondingly, the second terminal can obtain the LTE side link resource indicated in the indication domain of the side link control information by demodulating the received side link control information, so as to determine the LTE side link resource reservation condition.

Optionally, considering that the terminals in the sidelink co-channel coexistence scene may be the same type of first class terminals as the first terminal, the generated target side link control information may also be sent to other first class terminals through a new air interface NR module of the first terminal, so as to implement the LTE sidelink resource reservation situation that each first class terminal in the sidelink co-channel coexistence scene may acquire each other.

Through the steps S202 to S206, obtaining LTE side link resource information through a long term evolution LTE module of the first terminal, where the LTE side link resource information is used to indicate LTE side link resources in the shared resource pool, and the LTE side link resources are resources used for LTE side link communication; generating target side link control information according to the LTE side link resource information, wherein the target side link control information comprises an indication domain for indicating the LTE side link resource; the generated target side link control information is sent to the second terminal through the new air interface NR module of the first terminal, so that the problem that resource conflict is easy to occur when the transmission method of the side link control information in the related technology is used for co-existence communication of the same channel is solved, and the occurrence rate of the resource conflict is reduced.

In an exemplary embodiment, each terminal may indicate that the third type of terminal and the first type of terminal use/reserve resources in the shared resource pool by indicating a plurality of tuples (i.e., tuple), where one tuple may include at least one resource. Correspondingly, the indication field for indicating the LTE side chain resource may include: a set of information indicating a field for indicating N tuples used/reserved in LTE side-chain resources. Here, reserved resources may be understood as used resources. N is a positive integer greater than or equal to 1.

In one exemplary embodiment, the set of information indicative fields includes at least one of:

the resource joint indication domain is used for indicating the frequency domain position information of the primary transmission resource and the retransmission resource or the time domain interval information of the primary transmission resource and the retransmission resource in each tuple of the N tuples;

a resource reservation indication field, wherein the resource reservation indication field is used for indicating a reservation period corresponding to each tuple of the N tuples;

a specified resource location indication field, wherein the specified resource location indication field is used for indicating a location interval between a first resource of a subsequent tuple and a first resource of a previous tuple in adjacent tuples of the N tuples;

A reference location indication field, wherein the reference location indication field is used for indicating a location of a first resource of a first tuple of the N tuples;

the lowest subchannel index indication field is used to indicate the lowest subchannel index of the first resource of each of the N tuples.

In this embodiment, a set of information indication fields corresponding to N tuples reserved in the LTE side link resource may include: a resource association indication field, a resource reservation indication field, a designated resource location indication field, a reference location indication field and a lowest subchannel index indication field.

The above-described resource association (i.e., resource combination) indication field may be used to indicate frequency domain location information of the primary and retransmission resources or time domain interval information of the primary and retransmission resources in each of the N tuples.

The above-mentioned resource reservation indication field may be used to indicate a reservation period corresponding to each of the N tuples, i.e. the resource reservation indication field is used to indicate N reservation periods, which are in one-to-one correspondence with the N tuples in the above-mentioned resource association.

Taking the example that the resource reservation indication field occupies 4N bits, N is a positive integer, and the reservation period corresponding to each repetition is indicated by 4 bits, as defined in clause 14.2.1 in 3GPP technical specification TS 36.213.

The specified resource location indication field may be used to indicate a location interval between a first resource of a subsequent tuple and a first resource of a previous tuple in adjacent tuples of the N tuples. The reference location indication field may be used to indicate where a first resource of a first one of the N tuples is located. Here, the first tuple refers to the first tuple corresponding to the time domain in the resource joint indication domain.

The above-described lowest subchannel index indication field may be used to indicate the lowest subchannel index of the first resource of each of the N tuples. The lowest subchannel index indication field may have N indexes, and the N indexes may correspond to the N tuples one to one.

By means of the embodiment, the accuracy of information transmission can be improved by a group of indication fields comprising N tuples of at least one of the resource joint indication field, the resource reservation indication field, the specified resource location indication field, the reference location indication field and the lowest sub-channel index indication field.

In an exemplary embodiment, when the set of information indication fields includes a resource joint indication field, and the resource joint indication field is at least used to indicate frequency domain location information of the primary transmission resource and the retransmission resource in each tuple, the number of bits occupied by the frequency domain location information indicated by the resource joint indication field is set according to the number of subchannels of the LTE side link in the resource pool.

Indicating domain occupancy with resource federationThe example is bit (bits), where N is a positive integer, < >>Is the number of sub-channels of LTE sidelink in the resource pool, indicates N used/reserved rounds altogether, and the time-frequency domain resource corresponding to each round is formed byThe bit number indicates. Wherein, as defined in clause 14.1.1.4C in 3GPP technical Specification TS 36.213,/I>The bit indicates frequency domain location information of the primary transmission resource and the retransmission resource in one repetition.

When the set of information indication fields includes a resource joint indication field and the resource joint indication field is at least used for indicating time domain interval information of primary transmission resources and retransmission resources in each tuple, the time domain interval corresponding to the time domain interval information indicated by the resource joint indication field takes an LTE side-chain subframe as a unit or takes an NR side-chain time slot as a unit.

Optionally, when the resource joint indication field is used for indicating the frequency domain position information of the primary transmission resource and the retransmission resource in each tuple and the time domain interval information of the primary transmission resource and the retransmission resource in each tuple, the resource joint indication field is used for occupyingFor example, M bits indicate time-domain interval information of the primary transmission resource and the retransmission resource in one repetition. When the time domain interval is clocked with LTE sidelink subframes, m=4, the indication is as defined in clause 14.1.1.4C in 3GPP technical specification TS 36.213. When the time domain interval is clocked with the NR sidelink slot, the decimal value indicated by m=7, 7 bits is the time domain interval of the primary transmission resource and the retransmission resource.

Optionally, when the resource joint indication field is used for indicating the time domain interval information of the primary transmission resource and the retransmission resource in each tuple, taking the example that the resource joint indication field occupies m×n bits, N is a positive integer, N used/reserved rounds are indicated altogether, and the time domain resource corresponding to each round is indicated by M bits, that is, each M bits indicates the time domain interval information of the primary transmission resource and the retransmission resource in one round. When the time domain interval is clocked with LTE sidelink subframes, m=4, the indication is defined as clause 14.1.1.4C in 3GPP technical specification TS 36.213, and when the time domain interval is clocked with NR sidelink slots, the decimal value indicated by m=7, 7 bits is the time domain interval of the primary and retransmission resources.

Alternatively, if the number of rounds actually indicated by the resource joint indication field is smaller than N, e.g. only N-2 rounds actually need to be indicated, the aforementioned N depending on the UE implementationThree of the bitsThe bit or three M bits of the m×n bits are set to the same value, and correspondingly, the indication fields of the "resource reservation", "first resource location", "lowest subchannel index" also perform similar processing.

When the set of information indication fields includes a reference position indication field and the position indicated by the reference position indication field is the position of the reference subframe, the reference position indication field is used for indicating the frame index of the frame where the reference subframe is located and the subframe index of the reference subframe in the frame where the reference subframe is located, wherein the reference subframe is the subframe where the first resource of the first tuple is located.

With reference subframe occupancyFor example, the upper 10 bits (i.e., the corresponding decimal indication value is 0-1023) indicate the frame index of the frame where the reference subframe is located, and the lower 4 bits (i.e., the corresponding decimal indication value is 0-15, but only 0-9 is actually taken) indicate the subframe index of the reference subframe in the corresponding frame. The frame index here may be SFN (system frame number ) or DFN (direct frame number, direct frame number).

When the set of information indication fields includes a reference position indication field and the position indicated by the reference position indication field is the position of the reference time slot, the reference position indication field is used for indicating the frame index of the frame where the reference time slot is located and the time slot index of the reference time slot in the frame where the reference time slot is located, wherein the reference time slot is the time slot where the first resource of the first tuple is located.

With reference slot occupancyThe number of bits is taken as an example,u is the NR sidelink subcarrier spacing coefficient. The upper 10 bits (i.e., corresponding decimal indicator values of 0-1023) indicate the frame index of the frame in which the reference slot is located, lowThe decimal indication value corresponding to the bit indicates the slot index of the reference slot in the corresponding frame. The frame index is similar to the previous description of the frame index, and this embodiment is not described here again.

When the set of information indication fields includes a specified resource location indication field, the location interval indicated by the specified resource location indication field is in units of LTE side-chain subframes or in units of NR side-chain slots.

Taking the designated resource location indication domain as a first resource location as an example, the first resource location may be an LTE sidelink subframe index, occupying 8 x (N-1) bits, where N is a positive integer. Wherein, the decimal value corresponding to each 8bit value is used to indicate the time domain interval of the first resource in one repetition (starting from the second repetition in the time domain) and the first resource in the last repetition. Specifically, the 8bit may indicate an interval of 0-255 subframes. In addition, the first resource location may also be an NR sidelink slot index, occupying 8 x (N-1) bits, where N is a positive integer. Wherein, the decimal value corresponding to each 8bit value is used to indicate the time domain interval of the first resource in one repetition (starting from the second repetition in the time domain) and the first resource in the last repetition. Specifically, 8 bits may indicate an interval of 0-255 slots.

When the set of information indication fields includes a lowest subchannel index indication field, the number of bits occupied by the lowest subchannel index indication field is set according to the number of subchannels of the LTE side link in the resource pool.

Indicating domain occupancy with lowest subchannel indexEach bit is exemplified byThe decimal value corresponding to the bit indicates the lowest subchannel index of the first resource of one repetition, N is a positive integer,is the number of sub-channels of LTE sidelink in the resource pool.

According to the embodiment, the resource joint indication domain, the designated resource position indication domain, the reference position indication domain and the lowest sub-channel index indication domain are correspondingly arranged according to the related protocol requirements, so that the integrity of the resource reservation conditions among different terminals can be improved under the condition that the information is completely and accurately transmitted, and the communication reliability is improved.

In one exemplary embodiment, the set of information indication fields further comprises: a priority indication field, wherein the priority indication field is used to indicate a priority of each of the N tuples.

Taking 3N bits occupied by the priority indication domain as an example, where N is a positive integer, the priority indication domain is used for indicating priorities of resources used/reserved by the third class of terminals and other first class of terminals obtained by LTE sidelink detection by the first class of terminals through LTE module, and N priorities are indicated altogether, and 3 bits occupied by each priority are defined as clause 4.4.5.1 in 3GPP technical specification TS 23.285 and are in one-to-one correspondence with N rounds in the resource joint indication domain.

The priority of each tuple may be determined by the priority of the resources in the tuple, i.e. a priority indication field may be used to indicate the priority of the resources in each tuple. In the case where there are a plurality of resources in one tuple and the priority of each resource is different, the priority of the resource with the highest priority in one tuple is taken as the priority of the tuple.

By setting the priority indication domain in the transmission group information indication domain, the embodiment can improve the integrity of the resource reservation condition between the terminals acquired by different terminals, thereby improving the communication reliability.

In an exemplary embodiment, the target-side link control information further includes:

a resource type indication field, wherein the resource type indication field is used for indicating that the resource indicated by the target side link control information is a resource for LTE side link communication or a resource for NR side link communication, and when the resource type indication field indicates that the resource indicated by the target side link control information is a resource for LTE side link communication, a set of information indication field is used for indicating N tuples reserved in LTE side link resources;

and providing/requesting an indication field, wherein when the resource type indication field indicates that the resource indicated by the target side link control information is a resource for LTE side link communication, the providing/requesting indication field is used for indicating that the target side link control information is used for providing LTE side link resources, and when the resource type indication field indicates that the resource indicated by the target side link control information is a resource for NR side link communication, the providing/requesting indication field is used for indicating that the target side link control information is used for providing inter-terminal cooperation information of NR side links or is used for requesting inter-terminal cooperation information of NR side links.

When SCI format 2-C multiplexing is implemented by adding and modifying an existing indication field of the second-stage SCI, an indication field of a resource type and an indication field of a provision/request may be newly added in the target-side link control information for distinguishing resources indicated by the generated target-side link control information.

The above-mentioned resource type indication field, that is, the above-mentioned RAT indication, may indicate whether the resource indicated by the target-side link control information is a resource for LTE-side link communication or a resource for NR-side link communication by a value of a bit.

Taking RAT indication as an example of occupying 1bit, SCI format 2-C provides resources for LTE sidelink communication when the value of the bit is 0, and SCI format 2-C provides/requests resources for NR sidelink communication when the value of the bit is 1.

The above-described value of the bits of the provide/request indication field may correspond to the value of the bits of the resource type indication field. That is, in the case where the RAT indicates that 1bit is occupied and the value of the bit is 0 (indicating that SCI format 2-C provides resources for LTE sidelink communication), the value of the provide/request indication should be fixed to "0", and at this time, SCI format 2-C provides resources used/reserved by the third type of terminal and other first type of terminals obtained by LTE sidelink detection by the first type of terminal through LTE module. And in the case where the bit has a value of 1 (indicating that SCI format 2-C provides/requests resources for NR sidelink communication), SCI format 2-C is used to provide NR sidelink inter-user cooperation information if the value of the provide/request indication is 0, and SCI format 2-C is used to request NR sidelink inter-user cooperation information if the value of the provide/request indication is 1.

Alternatively, when the SCI format 2-D can indicate the LTE sidelink resource usage/reservation situation by designing a new second level SCI (e.g., SCI format 2-D), the new second level SCI is only used to indicate the LTE sidelink resource usage/reservation situation, and the target side link control information does not include the above-mentioned resource type indication field and provisioning/request indication field.

According to the embodiment, when the existing second-stage SCI is newly added and changed, the resource type indication domain and the providing/requesting indication domain are set to distinguish whether the resource indicated in the transmitted target side link control information is the resource used for LTE side link communication or NR side link communication, so that the identification efficiency of the received information by the receiving terminal can be improved.

a transmission type indication field, wherein the transmission type indication field is used for indicating a transmission type of the target-side link control information, and the transmission type comprises at least one of the following: broadcasting, unicasting and multicasting;

and the filling information is used for filling the target side link control information until the occupied bit number reaches a preset value when the occupied bit number of the target side link control information is smaller than the preset value.

When SCI format 2-C multiplexing is implemented by adding and modifying the indication field of the existing second-level SCI, the target-side link control information may include the transmission type indication field and padding information while including the indication field in the foregoing embodiment.

The bit value of the transmission type indication field may correspond to the bit value of the resource type indication field. Taking the example that the transmission type indication field occupies 2 bits as an example, the corresponding relationship between the transmission type indication value corresponding to the 2 bits and the transmission type can be shown in table 1.

TABLE 1

2bit value	Transmission type
		0,0	Broadcasting
0,1	Multicast in which HARQ-ACK information contains ACK or NACK
		1,0	Unicast of
1,1	Multicast when HARQ-ACK information contains NACK only

For example, when the value indicated by the RAT is 1, the 2bit value corresponding to the transmission type indication should be fixed to "1,0", and the transmission type only supports unicast, and when the value indicated by the RAT is 0, the transmission type supports four cases as shown in table 1.

Optionally, when the transmission type is unicast or multicast when the HARQ-ACK information includes ACK (acknowledgement) or NACK (negative acknowledgement), the resources provided by SCI format 2-C conflict with at least one resource used/reserved by at least one second type terminal for a third type terminal and other first type terminals obtained by LTE sidelink detection by the first type terminal through LTE module.

Taking target side link control information as SCI format2-C as an example for padding information, when the total number of bits occupied by the SCI format2-C (before padding) does not reach a preset value, padding the SCI format2-C by using padding bits so that the total number of bits occupied by the SCI format2-C reaches the preset value; otherwise, the stuff bits do not exist.

Alternatively, when implementing SCI format2-C multiplexing by adding and modifying the indication field of the existing second-level SCI, the various indication fields in the foregoing embodiments may be adding and modifying the indication field of the existing second-level SCI, and the generated target-side link control information may include, while including the indication field, other indication fields of the existing second-level SCI, including, but not limited to, HARQ process number, new data indication, redundancy version, source ID, target ID, HARQ feedback enable/disable indication, CSI request, and the like.

The HARQ process number may occupy 4 bits, a new data indication, 1bi, a redundancy version, 2 bits (as defined in table 7.3.1.1.1-2 in 3GPP technical specification TS 38.212), a source ID, 8 bits (as defined in clause 8.1 in 3GPP technical specification TS 38.214), a destination ID, 16 bits (as defined in clause 8.1 in 3GPP technical specification TS 38.214), a HARQ feedback enable/disable indication, 1bit (as defined in clause 16.3 in 3GPP technical specification TS 38.213), a CSI request, 1bit (as defined in clause 8.1 in 3GPP technical specification TS 38.214). It should be noted that, in the foregoing embodiment, the setting of the priority indication field, the resource association indication field, the resource reservation indication field, the specified resource location indication field, the reference location indication field, the lowest subchannel index indication field, and the padding information may be performed when the value of the RAT indication is set to 0.

Further, in the case where the value of RAT indication is set to 1 and the value of provide/request indication is set to 0, the remaining indication fields in the target-side link control information other than the other indication fields of the second-stage SCI existing in the foregoing embodiment are set as follows:

resource association, occupationThe number of bits is as defined in clause 8.1.5A of 3GPP technical Specification TS 38.214, where +.>And N is _{rsv_period} Is the number of entries in the higher layer parameter sl-ResourceReserve PeriodList, when the higher layer parameter sl-MultiReserveResource is configured; otherwise y=0.The number of sub-channels in the NR sidelink resource pool is provided by a high-level parameter sl-NumSubchannel;

a first resource location occupying 8 bits as defined by clause 8.1.5A in 3GPP technical specification TS 38.214;

reference slot position, occupancyBits, as defined in clause 8.1.5A in 3GPP technical specification TS 38.214, wherein u is as defined in table 4.2-1 of 3GPP technical specification TS 38.211; />

The resource set type occupies 1bit, wherein a value of 0 indicates a preferred resource set, and a value of 1 indicates a non-preferred resource set;

lowest subchannel index, occupancyBits, as defined by clause 8.1.5A in 3GPP technical specification TS 38.214.

In the case where the value of RAT indication is set to 1 and the value of provide/request indication is set to 1, the remaining indication fields in the target-side link control information, except for the other indication fields of the second-level SCI existing in the foregoing embodiment, are set as follows:

Priority, 3 bits occupied, as defined by clause 5.4.3.3 in 3GPP technical specification TS 23.287 and clause 5.22.1.3.1 in technical specification TS 38.321. The priority indication field value "000" corresponds to the priority value "1", the value "001" corresponds to the priority value "2", and so on;

number of sub-channels, occupancyBits, as defined by clause 8.1.4A in 3GPP technical specification TS 38.214;

resource reservation period, occupancyBit, as defined in clause 8.1.4A in 3GPP technical Specification TS 38.214, where N _{rsv_period} Is the number of entries in the higher layer parameter sl-ResourceReserve PeriodList, when the higher layer parameter sl-MultiReserveResource is configured; otherwise, occupying 0bit;

resource selection window position, occupancyBits, as defined in clause 8.1.4A in 3GPP technical specification TS 38.214, wherein u is as defined in table 4.2-1 of 3GPP technical specification TS 38.211;

filling bits;

the resource set type occupies 1bit, if the higher-layer parameter sl-determineresource type is configured as 'ueb', the value 0 represents inter-UE cooperation information of the resource set requesting to provide preference, and the value 1 represents inter-UE cooperation information of the resource set requesting to provide preference; otherwise, it occupies 0bit.

SCI format 2-C obtained by adding and modifying the indication field of the existing second-level SCI may be as follows:

HARQ process number, 4 bits (bits) occupied;

new data indicates that 1bit is occupied;

redundancy versions, occupying 2 bits, as defined in table 7.3.1.1.1-2 in 3GPP technical specification TS 38.212;

source ID, 8 bits occupied, as defined in clause 8.1 in 3GPP technical specification TS 38.214;

target ID, 16 bits occupied, as defined in clause 8.1 in 3GPP technical specification TS 38.214;

HARQ feedback enabled/disabled indication, 1bit occupied, as defined in clause 16.3 in 3GPP technical specification TS 38.213;

CSI request, occupying 1bit, as defined in clause 8.1 in 3GPP technical specification TS 38.214;

RAT indicates that 1bit is occupied, SCI format 2-C provides resources for LTE sidelink communication when the value of the bit is 0, and SCI format 2-C provides/requests resources for NR sidelink communication when the value of the bit is 1;

the transmission type indication occupies 2 bits and is used for indicating the transmission type of SCI format 2-C, when the corresponding relation between the 2bit value corresponding to the transmission type indication and the transmission type is 1, the 2bit value corresponding to the transmission type indication is fixed as 1,0, namely, the transmission type only supports unicast at the moment;

when the RAT indicates a value of 0, the transmission type supports four cases in table 1. When the transmission type is unicast or HARQ table 1. When the ACK information comprises multicast in the case of ACK (acknowledgement) or NACK (negative acknowledgement), resources provided by SCI format 2-C are used/reserved resources of a third type of terminal obtained by LTE sidelink detection of a first type of terminal through LTE module and conflict with at least one resource used/reserved by at least one second type of terminal;

Providing/requesting an indication, occupying 1bit, and when the value of the RAT indication is 0, fixing the value of the providing/requesting indication to be 0, wherein SCI format 2-C provides resources used/reserved by a third type terminal obtained by LTE sidelink detection of a first type terminal through LTE module;

when the value of the RAT indication is 1 and the value of the providing/requesting indication is 0, SCI format 2-C is used to provide NR sidelink inter-user cooperation information; when the value of the RAT indication is 1 and the value of the providing/requesting indication is 1, SCI format 2-C is used to request NR sidelink inter-user cooperation information;

if the value of "RAT indication" is set to 0, the remaining indication fields of SCI format 2-C are set as follows:

priority, occupying 3N bits, where N is a positive integer, and is used to instruct the first class of terminals to perform LTE sidelink detection to obtain priority of resources used/reserved by the third class of terminals, and N priorities are indicated altogether, and 3 bits occupied by each priority are defined as clause 4.4.5.1 in 3GPP technical specification TS 23.285 and are in one-to-one correspondence with N tuple in the following "resource association"; in this embodiment, the same letter has the same value, and preferably, N has a value of 2, 3 or 4.

Resource federation can be occupiedA number of bits, wherein N is a positive integer, < >>Is the number of sub-channels of LTE sidelink in the resource pool, indicates N used/reserved rounds altogether, and the time-frequency domain resource corresponding to each round is formed byThe bit number indicates.

Wherein, as defined in clause 14.1.1.4C in 3GPP technical Specification TS 36.213,the bit indicates frequency domain location information of the primary transmission resource and the retransmission resource in one repetition, as defined in clause 14.1.1.4C in 3GPP technical specification TS 36.213; m bits indicate time domain interval information of primary transmission resources and retransmission resources in one repetition, when the time domain interval is counted by LTE sidelink subframes, m=4, the indication mode is defined as clause 14.1.1.4C in 3GPP technical specification TS 36.213, when the time domain interval is counted by NR sidelink time slots, decimal values indicated by m=7, 7 bits are the time domain interval of primary transmission resources and retransmission resources;

or, the resources jointly occupy m×n bits, N is a positive integer, N used/reserved rounds are indicated altogether, the time domain resource corresponding to each round is indicated by M bits, that is, each M bit indicates the time domain interval information of the primary transmission resource and the retransmission resource in one round, when the time domain interval is clocked by LTE sidelink subframes, m=4, and the indication mode is defined as clause 14.1.1.4C in 3GPP technical specification TS 36.213; when the time domain interval is clocked with the NR sidelink slot, the decimal value indicated by m=7, 7 bits is the time domain interval of the primary transmission resource and the retransmission resource. Furthermore, if the number of hops actually indicated by the "resource federation" is less than N, e.g., only N-2 hops actually need to be indicated, then depending on the UE implementation, N · will be Three of the individual bits +.>Setting three M bits of the bits or the m×n bits to the same value, and performing similar processing on the "priority", "resource reservation", "first resource location", "lowest subchannel index", at this time;

the resource reservation occupies 4N bits, N is a positive integer and is used for indicating N reservation periods and corresponds to N rounds in the resource combination, namely, the reservation period corresponding to each round is indicated by 4 bits, as defined in clause 14.2.1 in 3GPP technical specification TS 36.213;

when the first resource position is the index of the LTE sidelink subframe, 8 (N-1) bits are occupied, and N is a positive integer. Wherein, the decimal value corresponding to each 8bit value is used to indicate the time domain interval of the first resource in one repetition (starting from the second repetition in the time domain) and the first resource in the last repetition. Specifically, the 8bit indicated interval is 0-255 subframes; when the first resource position is the NR sidelink time slot index, 8 (N-1) bits are occupied, and N is a positive integer. Wherein, the decimal value corresponding to each 8bit value is used to indicate the time domain interval of the first resource in one repetition (starting from the second repetition in the time domain) and the first resource in the last repetition. Specifically, the 8bit indicated interval is 0-255 time slots;

When the reference position is the reference subframe position, the reference subframe is the subframe where the first resource of the first repetition in the 'resource combination' is located, and occupiesWherein the upper 10 bits (corresponding decimal indication value is 0-1023) indicate the frame index of the frame where the reference subframe is located, and the lower 4 bits (corresponding decimal indication value is 0-15, but only 0-9 is actually taken) indicate the subframe index of the reference subframe in the corresponding frame, wherein the frame index can be SFN (system frame number)A system frame number) or DFN (direct frame number ); when the reference position is the reference time slot position, the reference time slot is the time slot where the first resource of the first repetition is located in the 'resource combination', occupying +.> And the number of bits, u is the NR sidelink subcarrier spacing coefficient. Wherein the upper 10 bits (i.e. the corresponding decimal indication value is 0-1023) indicate the frame index of the frame where the reference time slot is located, and the lowerThe decimal indication value corresponding to the bit indicates the time slot index of the reference time slot in the corresponding frame, and the frame index can be SFN (system frame number ) or DFN (direct frame number, direct frame number);

lowest subchannel index, occupancyA bit indicating the lowest subchannel index (in LTE sidelink subchannels) of the first resource of each repetition, i.e. every +. >The decimal value corresponding to the bit indicates the lowest subchannel index of the first resource of one repetition, and the N indexes are in one-to-one correspondence with the N repetitions in the "resource association". Wherein N is a positive integer, ">Is the number of sub-channels of LTE sidelink in the resource pool;

filling bits, when the total number of bits occupied by SCI format 2-C (before filling) does not reach a preset value, filling the SCI format 2-C by using the filling bits so that the total number of the occupied bits reaches the preset value; otherwise, the stuff bits do not exist.

If the value of "RAT indication" is set to 1 and the value of "provide/request indication" is set to 0, the remaining indication fields of SCI format 2-C are set as follows:

resource association, occupationThe number of bits is as defined in clause 8.1.5A in 3GPP technical Specification TS 38.214, where +.>And N is _{rsv_period} Is the number of entries in the higher layer parameter sl-ResourceReserve PeriodList, when the higher layer parameter sl-MultiReserveResource is configured; otherwise y=0

The number of sub-channels in the NR sidelink resource pool is provided by a high-level parameter sl-NumSubchannel;

reference slot position, occupancy Bits, as defined in clause 8.1.5A in 3GPP technical specification TS 38.214, wherein u is as defined in table 4.2-1 of 3GPP technical specification TS 38.211;

lowest subchannel index, occupancyBits, as defined by clause 8.1.5A in 3GPP technical specification TS 38.214;

if the value of "RAT indication" is set to 1 and the value of "provide/request indication" is set to 1, the remaining indication fields of SCI format 2-C are set as follows:

the resource set type occupies 1bit, if the higher-layer parameter sl-determineresource type is configured as 'ueb', the value 0 represents inter-UE cooperation information of the resource set requesting to provide preference, and the value 1 represents inter-UE cooperation information of the resource set requesting to provide preference; otherwise, occupying 0bit;

filling in bits.

Optionally, when the SCI format 2-D may indicate LTE sidelink resource usage/reservation by designing a new second level SCI (e.g., SCI format 2-D), the transmission type indication field and other indication fields of the existing second level SCI may be included, including but not limited to HARQ process number, new data indication, redundancy version, source ID, target ID, HARQ feedback enable/disable indication, CSI request, etc., while the indication field in the corresponding embodiment is included.

The above SCI format 2-D may contain the following information:

HARQ process number, 4 bits occupied;

new data indicates that 1bit is occupied;

the transmission type indicates, occupies 2 bits, and is used for indicating the transmission type of SCI format 2-D, and the corresponding relationship between the 2bit value and the transmission type corresponding to the transmission type indication is shown in Table 2:

TABLE 2

Optionally, when the transmission type is unicast or multicast when the HARQ-ACK information includes ACK or NACK, resources provided by SCI format 2-D are that resources used/reserved by a third type of terminal and other first type of terminals obtained by LTE sidelink detection by the first type of terminal through LTE module collide with at least one resource used/reserved by at least one second type of terminal;

priority, occupying 3N bits, where N is a positive integer, and is used to instruct the first class terminal to perform LTE sidelink detection through LTE module to obtain priorities of resources used/reserved by the third class terminal and other first class terminals, and totally instruct N priorities, where 3 bits occupied by each priority are defined as clause 4.4.5.1 in 3GPP technical specification TS 23.285, and are in one-to-one correspondence with N rounds (tuples) in the following "resource combination";

Resource association, can occupyA number of bits, wherein N is a positive integer, < >>Is the number of sub-channels of LTE sidelink in the resource pool, indicates N used/reserved rounds altogether, and the time-frequency domain resource corresponding to each round is formed byThe bit number indicates. Wherein,,the bit indicates frequency domain location information of the primary transmission resource and the retransmission resource in one repetition, as defined in clause 14.1.1.4C in 3GPP technical specification TS 36.213; the M bits indicate time domain interval information of the primary transmission resource and the retransmission resource in one repetition. When the time domain interval is clocked with an LTE sidelink subframe, m=4, the indication manner is defined as clause 14.1.1.4C in 3GPP technical specification TS 36.213, and when the time domain interval is clocked with an NR sidelink slot, the decimal value indicated by m=7, 7 bits is the time domain interval of the primary transmission resource and the retransmission resource;

the resource combination can also occupy M x N bits, N is a positive integer, and indicates N use/reserved complete, eachthe time domain resource corresponding to the repetition is indicated by M bits, that is, each M bits indicates time domain interval information of the primary transmission resource and the retransmission resource in one repetition, when the time domain interval is clocked by the LTE sidelink subframe, m=4, the indication mode is defined as clause 14.1.1.4C in 3GPP technical specification TS 36.213, when the time domain interval is clocked by the NR sidelink timeslot, the decimal value indicated by m=7, 7 bits is the time domain interval of the primary transmission resource and the retransmission resource. Furthermore, if the number of hops actually indicated by the "resource federation" is less than N, e.g., only N-2 hops actually need to be indicated, then depending on the UE implementation, N · will be Three of the bitsSetting three M bits of the bits or m×n bits to the same value, and performing similar processing on the "priority", "resource reservation", "first resource location", "lowest subchannel index", at this time;

and the first resource position occupies 8 (N-1) bits when the first resource position is an LTE sidelink subframe index, and N is a positive integer. Wherein, the decimal value corresponding to each 8bit value is used to indicate the time domain interval of the first resource in one repetition (starting from the second repetition in the time domain) and the first resource in the last repetition. Specifically, the 8bit may indicate an interval of 0-255 subframes. When the first resource position is the NR sidelink time slot index, 8 (N-1) bits are occupied, and N is a positive integer. Wherein, the decimal value corresponding to each 8bit value is used to indicate the time domain interval of the first resource in one repetition (starting from the second repetition in the time domain) and the first resource in the last repetition. Specifically, the 8bit indicated interval is 0-255 time slots;

When the reference position is the reference subframe position, the reference subframe is 'resource combination'The first resource of the first hop is in the subframe, occupyingAnd bit by bit. The upper 10 bits (i.e. the corresponding decimal indication value is 0-1023) indicate the frame index of the frame where the reference subframe is located, and the lower 4 bits (i.e. the corresponding decimal indication value is 0-15, but only 0-9 is actually taken) indicate the subframe index of the reference subframe in the corresponding frame, where the frame index may be SFN (system frame number ), and the frame index may also be DFN (direct frame number ). When the reference position is the reference time slot position, the reference time slot is the time slot where the first resource of the first repetition is located in the 'resource combination', and the occupancy is +.> And the number of bits, u is the NR sidelink subcarrier spacing coefficient. Wherein the upper 10 bits (i.e. the corresponding decimal indication value is 0-1023) indicate the frame index of the frame where the reference time slot is located, low +.>The decimal indication value corresponding to the bit indicates the time slot index of the reference time slot in the corresponding frame, and the frame index can be SFN (system frame number ) or DFN (direct frame number, direct frame number);

lowest subchannel index, occupancyA bit indicating the lowest subchannel index (in LTE sidelink subchannels) of the first resource of each repetition, i.e. every +. >The decimal value corresponding to the bit indicates the lowest subchannel index of the first resource of one repetition, and the N indexes are in one-to-one correspondence with the N repetitions in the "resource association". Wherein N is a positive integer, ">Is the number of sub-channels of LTE sidelink in the resource pool.

By setting the transmission type indication field and the padding information in the target side link control information, the method and the device can improve the identification efficiency of the receiving terminal on the received information while guaranteeing the integrity of the transmission information.

In one exemplary embodiment, the target-side link control information is second-level side link communication information, i.e., second-level SCI.

Based on the sidelink co-channel coexistence technology studied in Release-18 by 3GPP and the technology not influencing the existing LTE sidelink protocol, the related technology enhancement/modification is only aimed at the premise of NR sidelink, the target side link control information is set as second-level side link communication information, the volume is increased or modified in the embodiment, the second-level side link communication information is subjected to, and the current standardization guide is met, and meanwhile, the existing protocol is not introduced with larger modification, and the terminal is not added with larger communication overhead.

According to another aspect of the embodiments of the present application, a method for transmitting side link control information is also provided. Alternatively, in the present embodiment, the above-described transmission method of the side link control information may be applied to a hardware environment constituted by the first terminal device 102, the second terminal device 104, and the server 106 as shown in fig. 1. Has been described and will not be described in detail herein.

Taking the transmission method of the side link control information in the present embodiment performed by the first terminal device 104 (receiving terminal) as an example, fig. 4 is a schematic flow chart of an alternative transmission method of the side link control information according to the embodiment of the present application, as shown in fig. 4, the flow chart of the method may include the following steps:

in step S402, the target side link control information sent by the first terminal is received through the new air interface NR module of the second terminal, where the target side link control information includes an indication field for indicating a long term evolution LTE side link resource in the shared resource pool, and the LTE side link resource is a resource for LTE side link communication.

The application scenario of the transmission method of the side link control information in this embodiment may be similar to that of the foregoing embodiment, and will not be described herein. The target-side link control information sent by the first terminal and received by the new air interface NR module of the second terminal may be side link control information including related information such as various indication fields in the foregoing embodiments. The second terminal may be the same as the description of the foregoing embodiments, and will not be described herein.

Step S404, according to the received target side link control information, determining LTE side link resources in the shared resource pool.

For the received target side link control information, the second terminal may demodulate the target side link control information according to the setting manner of the relevant information such as various indication domains in the target side link control information in the foregoing embodiment, and determine, according to the demodulation result, LTE side link resources in the shared resource pool, that is, resources occupied by the first type of terminal and the third type of terminal including the LTE module in the shared resource pool.

Receiving, by the above steps S402 to S404, target side link control information sent by the first terminal through a new air interface NR module of the second terminal, where the target side link control information includes an indication field for indicating long term evolution LTE side link resources in the shared resource pool, where the LTE side link resources are resources for LTE side link communications; according to the received target side link control information, the LTE side link resources in the shared resource pool are determined, the problem that resource conflict is easy to occur when the transmission method of the side link control information in the related technology is used for co-channel coexistence communication is solved, and the occurrence rate of the resource conflict is reduced.

The following explains the transmission method of the side chain control information in the embodiment of the present application with reference to an alternative example. In this optional example, the first terminal is a first type terminal, the second terminal is a second type terminal, the designated resource location indication domain is a first resource location indication domain, and the side link control information is SCI.

In this optional example, a resource indication method for co-channel coexistence is provided, and by multiplexing second-level Sidelink Control Information (SCI) or designing a new second-level SCI, the second terminal can obtain resource use/reservation conditions of the third type terminal and other first type terminals by receiving/demodulating the SCI sent by the first terminal, so that the probability of resource conflict between terminals is reduced and the communication reliability is improved under the co-channel coexistence scene.

As shown in fig. 5, the flow of the method for transmitting side chain control information in this alternative example may include the following steps:

step S502, the LTE module of the first type terminal performs LTE side chain detection to obtain an indication LTE sidelink resource use/reservation condition.

Step S504, SCI (multiplexed SCI format 2-C or new SCI format 2-D) indicating LTE sidelink resource usage/reservation status is generated.

In step S506, the first class terminal transmits the SCI to the second class terminal and other first class terminals.

In step S508, the second type terminal and other first type terminals acquire resource usage/reservation situations of the third type terminal and other first type terminals by receiving/demodulating SCI sent by the first type terminal.

Through the optional example, through the method of multiplexing SCI format 2-C or the new second-stage SCI design method, different terminals can be ensured to acquire the resource use condition of each other under the condition of less change to the existing protocol, so that the resource conflict probability among the terminals is reduced, and the communication reliability is improved.

It should be noted that, for simplicity of description, the foregoing method embodiments are all expressed as a series of action combinations, but it should be understood by those skilled in the art that the present application is not limited by the order of actions described, as some steps may be performed in other order or simultaneously in accordance with the present application. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required in the present application.

From the description of the above embodiments, it will be clear to a person skilled in the art that the method according to the above embodiments may be implemented by means of software plus the necessary general hardware platform, but of course also 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 software product stored in a storage medium (such as ROM (Read-Only Memory)/RAM (RandomAccess Memory), magnetic disk, optical disk), including instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method of the embodiments of the present application.

According to still another aspect of the embodiments of the present application, there is further provided a device for transmitting side chain control information for implementing the above method for transmitting side chain control information, where the device for transmitting side chain control information may be applied to an intelligent device. Fig. 6 is a block diagram of an alternative transmission apparatus for side link control information according to an embodiment of the present application, and as shown in fig. 6, the apparatus may include:

an obtaining unit 602, configured to obtain, by using a long term evolution LTE module of the first terminal, LTE side link resource information, where the LTE side link resource information is used to indicate LTE side link resources in the shared resource pool, and the LTE side link resources are resources used for LTE side link communications;

a generating unit 604, coupled to the acquiring unit 602, configured to generate target side link control information according to the LTE side link resource information, where the target side link control information includes an indication field for indicating the LTE side link resource;

and a sending unit 606, connected to the generating unit 604, configured to send the generated target-side link control information to the second terminal through the new air interface NR module of the first terminal.

It should be noted that, the acquiring unit 602 in this embodiment may be used to perform the above-described step S202, the generating unit 604 in this embodiment may be used to perform the above-described step S204, and the transmitting unit 606 in this embodiment may be used to perform the above-described step S206.

Through the above module, obtaining the LTE-side link resource information through the long term evolution LTE module of the first terminal, where the LTE-side link resource information is used to indicate the LTE-side link resource in the shared resource pool, and the LTE-side link resource is a resource used for LTE-side link communication; generating target side link control information according to the LTE side link resource information, wherein the target side link control information comprises an indication domain for indicating the LTE side link resource; the generated target side link control information is sent to the second terminal through the new air interface NR module of the first terminal, so that the problem that resource conflict is easy to occur when the transmission method of the side link control information in the related technology is used for co-existence communication of the same channel is solved, and the occurrence rate of the resource conflict is reduced.

In one exemplary embodiment, an indication field for indicating LTE side chain resources includes: and a set of information indication fields for indicating N tuples reserved in the LTE side chain resource, wherein N is a positive integer greater than or equal to 1.

In an exemplary embodiment, when the set of information indication fields includes a resource joint indication field and the resource joint indication field is at least used for indicating frequency domain location information of primary transmission resources and retransmission resources in each tuple, the number of bits occupied by the frequency domain location information indicated by the resource joint indication field is set according to the number of subchannels of the LTE side link in the resource pool;

when the set of information indication fields comprises a resource joint indication field and the resource joint indication field is at least used for indicating time domain interval information of primary transmission resources and retransmission resources in each tuple, the time domain interval corresponding to the time domain interval information indicated by the resource joint indication field takes an LTE side chain subframe as a unit or takes an NR side chain time slot as a unit;

When the group of information indication fields comprises a reference position indication field and the position indicated by the reference position indication field is the position of a reference subframe, the reference position indication field is used for indicating the frame index of the frame where the reference subframe is located and the subframe index of the reference subframe in the frame where the reference subframe is located, wherein the reference subframe is the subframe where the first resource of the first tuple is located;

when the set of information indication fields comprises a reference position indication field and the position indicated by the reference position indication field is the position of a reference time slot, the reference position indication field is used for indicating the frame index of the frame where the reference time slot is located and the time slot index of the reference time slot in the frame where the reference time slot is located, wherein the reference time slot is the time slot where the first resource of the first tuple is located;

when the group of information indication domains comprises a designated resource location indication domain, the location interval indicated by the designated resource location indication domain is in units of LTE side-chain subframes or NR side-chain time slots;

In one exemplary embodiment, the target side link control information is second level side link communication information.

According to still another aspect of the embodiments of the present application, there is also provided a transmission apparatus for side link control information for implementing the above-mentioned transmission method for side link control information. Fig. 7 is a block diagram of an alternative apparatus for transmitting side link control information according to an embodiment of the present application, and as shown in fig. 7, the apparatus may include:

a receiving unit 702, configured to receive, by using a second terminal, target side link control information sent by an NR module of a first terminal, where the target side link control information includes an indication field for indicating a long term evolution LTE side link resource in a shared resource pool, and the LTE side link resource is a resource for LTE side link communication;

And a determining unit 704, coupled to the receiving unit 702, configured to determine LTE side link resources in the shared resource pool according to the received target side link control information.

Through the above module, receiving, by a new air interface NR module of the second terminal, target side link control information sent by the first terminal, where the target side link control information includes an indication field for indicating a long term evolution LTE side link resource in the shared resource pool, where the LTE side link resource is a resource for LTE side link communication; according to the received target side link control information, the LTE side link resources in the shared resource pool are determined, the problem that resource conflict is easy to occur when the transmission method of the side link control information in the related technology is used for co-channel coexistence communication is solved, and the occurrence rate of the resource conflict is reduced.

It should be noted that the above modules are the same as examples and application scenarios implemented by the corresponding steps, but are not limited to what is disclosed in the above embodiments. It should be noted that the above modules may be implemented in software or in hardware as part of the apparatus shown in fig. 1, where the hardware environment includes a network environment.

According to yet another aspect of embodiments of the present application, there is also provided a storage medium that may be located on a smart device. Alternatively, in the present embodiment, the above-described storage medium may be used to execute the program code of the transmission method of the side chain control information of any of the above-described embodiments of the present application.

Alternatively, in this embodiment, the storage medium may be located on at least one network device of the plurality of network devices in the network shown in the above embodiment.

Alternatively, in the present embodiment, the storage medium is configured to store program code for performing the steps of:

s1, acquiring LTE side link resource information through a long term evolution LTE module of a first terminal, wherein the LTE side link resource information is used for indicating LTE side link resources in a shared resource pool, and the LTE side link resources are resources used for LTE side link communication;

s2, generating target side link control information according to the LTE side link resource information, wherein the target side link control information comprises an indication domain for indicating the LTE side link resource;

and S3, the generated target side link control information is sent to the second terminal through a new air interface NR module of the first terminal.

s1, receiving target side link control information sent by an NR module of a first terminal through a second terminal, wherein the target side link control information comprises an indication domain for indicating Long Term Evolution (LTE) side link resources in a shared resource pool, and the LTE side link resources are resources for LTE side link communication;

s2, determining LTE side link resources in the shared resource pool according to the received target side link control information.

Alternatively, specific examples in the present embodiment may refer to examples described in the above embodiments, which are not described in detail in the present embodiment.

Alternatively, in the present embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a U disk, ROM, RAM, a mobile hard disk, a magnetic disk or an optical disk.

According to still another aspect of the embodiments of the present application, there is further provided an electronic device for implementing the above-mentioned method for transmitting side chain control information, where the electronic device may be an intelligent device, and the electronic device may be a server, a terminal, or a combination thereof.

Fig. 8 is a block diagram of an alternative electronic device, according to an embodiment of the present application, including a processor 802, a communication interface 804, a memory 806, and a communication bus 808, as shown in fig. 8, wherein the processor 802, the communication interface 804, and the memory 806 communicate with each other via the communication bus 808, wherein,

A memory 806 for storing a computer program;

optionally, the processor 802 is configured to execute the computer program stored on the memory 806, and implement the following steps:

Optionally, the processor 802, when executing the computer program stored on the memory 806, further performs the following steps:

Alternatively, the communication bus may be a PCI (Peripheral Component Interconnect, peripheral component interconnect standard) bus, or an EISA (Extended Industry StandardArchitecture ) bus, or the like. The communication bus may be classified as an address bus, a data bus, a control bus, or the like. For ease of illustration, only one thick line is shown in fig. 8, but not only one bus or one type of bus. The communication interface is used for communication between the electronic device and other equipment.

The memory may include RAM or may include non-volatile memory (non-volatile memory), such as at least one disk memory. Optionally, the memory may also be at least one memory device located remotely from the aforementioned processor.

As an example, the memory 806 may include, but is not limited to, the acquisition unit 602, the generation unit 604, and the transmission unit 606 in the transmission apparatus including the above-described side link control information, and may also include, but is not limited to, the reception unit 702 and the determination unit 704 in the transmission apparatus including the above-described side link control information. In addition, other module units in the above-mentioned transmission device of the side link control information may be included, but are not limited to, and are not described in detail in this example.

The processor may be a general purpose processor and may include, but is not limited to: CPU (Central Processing Unit ), NP (Network Processor, network processor), etc.; but also DSP (Digital Signal Processing, digital signal processor), ASIC (Application Specific Integrated Circuit ), FPGA (Field-Programmable GateArray, field programmable gate array) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components.

Alternatively, specific examples in this embodiment may refer to examples described in the foregoing embodiments, and this embodiment is not described herein.

It will be understood by those skilled in the art that the structure shown in fig. 8 is only schematic, and the device implementing the above-mentioned method for transmitting side link control information may be a terminal device, and the terminal device may be a smart phone (such as an Android mobile phone, an iOS mobile phone, etc.), a tablet computer, a palm computer, a mobile internet device (Mobile Internet Devices, MID), a PAD, etc. Fig. 8 is not limited to the structure of the electronic device. For example, the electronic device may also include more or fewer components (e.g., network interfaces, display devices, etc.) than shown in FIG. 8, or have a different configuration than shown in FIG. 8.

Those of ordinary skill in the art will appreciate that all or part of the steps in the various methods of the above embodiments may be implemented by a program for instructing a terminal device to execute in association with hardware, the program may be stored in a computer readable storage medium, and the storage medium may include: flash disk, ROM, RAM, magnetic or optical disk, etc.

The foregoing embodiment numbers of the present application are merely for describing, and do not represent advantages or disadvantages of the embodiments.

The integrated units in the above embodiments may be stored in the above-described computer-readable storage medium if implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions to cause one or more computer devices (which may be personal computers, servers or network devices, etc.) to perform all or part of the steps of the methods described in the various embodiments of the present application.

In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

In several embodiments provided in the present application, it should be understood that the disclosed client may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of the units, such as the division of the units, is merely a logical function division, and may be implemented in another manner, for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution provided in the present embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or at least two units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application and are intended to be comprehended within the scope of the present application.

Claims

1. The method for transmitting the side link control information is characterized by comprising the following steps of:

acquiring LTE side link resource information through a long term evolution LTE module of a first terminal, wherein the LTE side link resource information is used for indicating LTE side link resources in a shared resource pool, and the LTE side link resources are resources used for LTE side link communication;

generating target side link control information according to the LTE side link resource information, wherein the target side link control information comprises an indication domain for indicating the LTE side link resource;

and sending the generated target side link control information to a second terminal through a new air interface NR module of the first terminal.

2. The method of claim 1, wherein the indication field for indicating the LTE side chain resources comprises: and a set of information indication fields for indicating N tuples reserved in the LTE side link resource, wherein N is a positive integer greater than or equal to 1.

3. The method of claim 2, wherein the set of information indication fields comprises at least one of:

a resource joint indication field, wherein the resource joint indication field is used for indicating frequency domain position information of primary transmission resources and retransmission resources or time domain interval information of the primary transmission resources and retransmission resources in each tuple of the N tuples;

a specified resource location indication field, wherein the specified resource location indication field is used for indicating a location interval between a first resource of a next tuple and a first resource of a previous tuple in adjacent tuples of the N tuples;

a reference location indication field, wherein the reference location indication field is used for indicating a location of a first resource of a first tuple in the N tuples;

a lowest sub-channel index indication field, wherein the lowest sub-channel index indication field is used to indicate a lowest sub-channel index of a first resource of each of the N tuples.

4. The method of claim 3, wherein the step of,

When the set of information indication fields comprises a resource joint indication field and the resource joint indication field is at least used for indicating the frequency domain position information of the primary transmission resource and the retransmission resource in each tuple, the bit number occupied by the frequency domain position information indicated by the resource joint indication field is set according to the subchannel number of the LTE side link in the resource pool;

when the set of information indication fields includes a resource joint indication field and the resource joint indication field is at least used for indicating time domain interval information of primary transmission resources and retransmission resources in each tuple, the time domain interval corresponding to the time domain interval information indicated by the resource joint indication field takes an LTE side chain subframe as a unit or takes an NR side chain time slot as a unit;

when the set of information indication fields includes a reference position indication field and the position indicated by the reference position indication field is the position of a reference subframe, the reference position indication field is used for indicating a frame index of a frame where the reference subframe is located and a subframe index of the reference subframe in the frame where the reference subframe is located, wherein the reference subframe is a subframe where a first resource of the first tuple is located;

When the set of information indication fields includes a reference position indication field and the position indicated by the reference position indication field is the position of a reference time slot, the reference position indication field is used for indicating a frame index of a frame where the reference time slot is located and a time slot index of the reference time slot in the frame where the reference time slot is located, wherein the reference time slot is a time slot where a first resource of the first tuple is located;

when the set of information indication fields includes a designated resource location indication field, a location interval indicated by the designated resource location indication field is in units of LTE side-chain subframes or in units of NR side-chain slots;

5. The method of claim 3, wherein the set of information indication fields further comprises: a priority indication field, wherein the priority indication field is used to indicate a priority of each tuple of the N tuples.

6. The method of claim 2, wherein the target-side link control information further comprises:

A resource type indication field, wherein the resource type indication field is used for indicating that the resource indicated by the target side link control information is a resource used for the LTE side link communication or a resource used for the NR side link communication, and when the resource type indication field indicates that the resource indicated by the target side link control information is a resource used for the LTE side link communication, the set of information indication fields is used for indicating N tuples reserved in the LTE side link resource;

and providing/requesting an indication field, wherein when the resource type indication field indicates that the resource indicated by the target side link control information is a resource for the LTE side link communication, the providing/requesting indication field is used for indicating that the target side link control information is used for providing the LTE side link resource, and when the resource type indication field indicates that the resource indicated by the target side link control information is a resource for the NR side link communication, the providing/requesting indication field is used for indicating that the target side link control information is used for providing inter-terminal cooperation information of the NR side link or inter-terminal cooperation information of the NR side link.

7. The method of claim 1, wherein the target-side link control information further comprises:

and filling information, wherein the filling information is information used for filling the target side link control information until the occupied bit number reaches a preset value when the occupied bit number of the target side link control information is smaller than the preset value.

8. The method according to any one of claims 1 to 7, wherein the target-side link control information is second-level side link communication information.

9. The method for transmitting the side link control information is characterized by comprising the following steps of:

receiving target side link control information sent by an NR module of a first terminal through a second terminal, wherein the target side link control information comprises an indication domain for indicating Long Term Evolution (LTE) side link resources in a shared resource pool, and the LTE side link resources are resources for LTE side link communication;

And determining the LTE side link resources in the shared resource pool according to the received target side link control information.

10. A transmission apparatus for side link control information, comprising:

the LTE system comprises an acquisition unit, a first terminal and a second terminal, wherein the acquisition unit is used for acquiring LTE side link resource information through a long term evolution LTE module of the first terminal, the LTE side link resource information is used for indicating LTE side link resources in a shared resource pool, and the LTE side link resources are resources used for LTE side link communication;

a generating unit, configured to generate target side link control information according to the LTE side link resource information, where the target side link control information includes an indication field for indicating the LTE side link resource; and the sending unit is used for sending the generated target side link control information to a second terminal through a new air interface NR module of the first terminal.

11. A transmission apparatus for side link control information, comprising:

a receiving unit, configured to receive, by using a second terminal, target side link control information sent by an NR module of a first terminal, where the target side link control information includes an indication field for indicating a long term evolution LTE side link resource in a shared resource pool, where the LTE side link resource is a resource for LTE side link communication;

And the determining unit is used for determining the LTE side link resources in the shared resource pool according to the received target side link control information.

12. A computer-readable storage medium, characterized in that the computer-readable storage medium comprises a stored program, wherein the program when run performs the method of any one of claims 1 to 9.

13. An electronic device comprising a memory and a processor, characterized in that the memory has stored therein a computer program, the processor being arranged to execute the method according to any of claims 1 to 9 by means of the computer program.