Method and apparatus for transmitting sidelink control information, storage medium and electronic device

Abstract

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

Description

TECHNICAL FIELD

[0001] The present application relates to the field of computers, and in particular, to a sidelink control information transmission method and device, a storage medium and an electronic device. BACKGROUND

[0002] Due to the scarcity of spectrum resources available for sidelink communication, and the gradual smooth transition of long term evolution (LTE) sidelink to new radio (NR) sidelink (that is, the proportion of LTE sidelink gradually decreases, and the proportion of NR sidelink gradually increases), 3GPP (3rd Generation Partner Project) begins to study sidelink co-channel coexistence technology in Release-18. When performing sidelink co-channel coexistence, the types of terminals that can work in co-channel coexistence need to be considered. For example, at least the first type of terminal, the second type of terminal and the third type of terminal should be considered. Among them, the first type of terminal has both LTE module and NR module, the second type of terminal only has NR module, and the third type of terminal only has LTE module.

[0003] However, since the NR module cannot detect the LTE SCI, and the LTE module cannot detect the NR SCI, the second type of terminal and the third type of terminal cannot detect the sidelink control information (SCI) from each other, which makes the possibility of resource conflict high. As can be seen, the sidelink control information transmission method in the related art is prone to resource conflict when used for co-channel coexistence communication. SUMMARY

[0004] Embodiments of the present application provide a sidelink control information transmission method and device, a storage medium and an electronic device to at least solve the problem that the sidelink control information transmission method in the related art is prone to resource conflict when used for co-channel coexistence communication.

[0005] According to an aspect of an embodiment of the present application, a method for transmitting sidelink control information is provided, including: obtaining, by a long term evolution (LTE) module of a first terminal, LTE sidelink resource information, wherein the LTE sidelink resource information is used to indicate LTE sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication; generating target sidelink control information according to the LTE sidelink resource information, wherein the target sidelink control information includes an indication field used to indicate the LTE sidelink resources; and sending, by a new radio (NR) module of the first terminal, the generated target sidelink control information to a second terminal.

[0006] According to another aspect of an embodiment of the present application, a method for transmitting sidelink control information is also provided, including: receiving, by a second terminal, target sidelink control information sent by an NR module of a first terminal, wherein the target sidelink control information includes an indication field used to indicate long term evolution (LTE) sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication; and determining the LTE sidelink resources in the shared resource pool according to the received target sidelink control information.

[0007] According to still another aspect of an embodiment of the present application, a device for transmitting sidelink control information is also provided, including: an obtaining unit, configured to obtain, by a long term evolution (LTE) module of a first terminal, LTE sidelink resource information, wherein the LTE sidelink resource information is used to indicate LTE sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication; a generating unit, configured to generate target sidelink control information according to the LTE sidelink resource information, wherein the target sidelink control information includes an indication field used to indicate the LTE sidelink resources; and a sending unit, configured to send, by a new radio (NR) module of the first terminal, the generated target sidelink control information to a second terminal.

[0008] According to still another aspect of an embodiment of the present application, a device for transmitting sidelink control information is also provided, including: a receiving unit, configured to receive, by a second terminal, target sidelink control information sent by an NR module of a first terminal, wherein the target sidelink control information includes an indication field used to indicate long term evolution (LTE) sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication; and a determining unit, configured to determine the LTE sidelink resources in the shared resource pool according to the received target sidelink control information.

[0009] According to a further aspect of the embodiments of the present application, a computer readable storage medium is also provided, which stores a computer program. The computer program is configured to execute the transmission method of the sidelink control information when running.

[0010] According to a further aspect of the embodiments of the present application, an electronic device is also provided, which comprises a memory, a processor and a computer program stored in the memory and executable on the processor. The processor executes the transmission method of the sidelink control information by the computer program.

[0011] In the embodiments of the present application, the LTE module of the first terminal is used to detect the LTE sidelink resource information and transmit it to the second terminal. The LTE sidelink resource is obtained by the LTE module of the first terminal, and the sidelink control information indicating the LTE sidelink resource is sent to the second terminal by the NR module of the first terminal. Thus, the second terminal can know the resource usage of the LTE sidelink, so as to avoid the possible conflicting resources when using the resources, thereby solving the problem that the transmission method of the sidelink control information in the related art is prone to resource conflict when used in the same channel coexistence communication. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present application and serve to explain the principles of the present application together with the specification.

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, for those skilled in the art, other drawings can also be obtained based on these drawings without creative labor.

[0014] Figure 1 is a hardware environment schematic diagram of a sidelink control information transmission method according to an embodiment of the present application;

[0015] Figure 2 is a flowchart of an optional sidelink control information transmission method according to an embodiment of the present application;

[0016] Figure 3 is a schematic diagram of different types of terminals according to an embodiment of the present application;

[0017] Figure 4 is a flowchart of another optional sidelink control information transmission method according to an embodiment of the present application;

[0018] Figure 5is a flow chart of another optional sidelink control information transmission method according to an embodiment of the application;

[0019] Figure 6 is a structural block diagram of an optional sidelink control information transmission device according to an embodiment of the application;

[0020] Figure 7 is a structural block diagram of another optional sidelink control information transmission device according to an embodiment of the application;

[0021] Figure 8 is a structural block diagram of an optional electronic device according to an embodiment of the application. DETAILED DESCRIPTION

[0022] In order to enable persons skilled in the art to better understand the scheme of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative labor should be within the scope of protection of the present application.

[0023] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] According to an aspect of an embodiment of the present application, a sidelink control information transmission method is provided. Optionally, in the present embodiment, the above-mentioned sidelink control information transmission method can be applied in a hardware environment composed of a first terminal device 102, a second terminal device 104 and a server 106 as shown in Figure 1 As shown in Figure 1 , the first terminal device 102, the second terminal device 104 and the server 106 are connected through a network.

[0025] The network can include, but is not limited to, at least one of the following: a wired network, a wireless network. The wired network can include, but is not limited to, at least one of the following: a wide area network, a metropolitan area network, a local area network. The wireless network can include, but is not limited to, at least one of the following: WIFI, Bluetooth. The first terminal device 102 and the second terminal device 104 can include, but are not limited to, a PC (Personal Computer), a tablet computer, a smart phone and the like. The first terminal device 102 and the second terminal device 104 can be the same type of device, or can be different types of devices.

[0026] The sidelink control information transmission method of the embodiment of the application can be executed by the server 106, or by the first terminal device 102 or the second terminal device 104, or by the server 106 and the first terminal device 102 and / or the second terminal device 104 together. Taking the sidelink control information transmission method of the embodiment executed by the first terminal device 102 (the sending terminal) as an example, Figure 2 is a flowchart of an optional sidelink control information transmission method according to an embodiment of the application, as shown in Figure 2 The flowchart of the method can include the following steps:

[0027] In step S202, the LTE sidelink resource information is acquired by the LTE module of the first terminal, wherein the LTE sidelink resource information is used to indicate the LTE sidelink resource in the shared resource pool, and the LTE sidelink resource is the resource used for LTE sidelink communication.

[0028] The sidelink control information transmission method of the embodiment can be applied to the scenario of acquiring the resource usage of each other between different terminals. Here, different terminals refer to terminals suitable for different communication types, such as terminals suitable for LTE sidelink communication due to the LTE module, terminals suitable for NR sidelink communication due to the NR module, and terminals suitable for LTE sidelink and NR sidelink communication due to the LTE module and the NR module at the same time. The resource usage refers to the time-frequency resource used by the terminal.

[0029] Due to the scarcity of spectrum resources available for sidelink communication, and the gradual transition from LTE sidelink to NR sidelink (i.e., a gradual decline in LTE sidelink market share and a gradual increase in NR sidelink market share), 3GPP began researching sidelink co-channel coexistence technology in Release-18. A prerequisite for this technology is that the performance of each RAT (Radio Access Technology) after co-channel coexistence should not be worse than the performance of each RAT deployed individually. Furthermore, this technology should not affect existing LTE sidelink protocols (i.e., it should be transparent to LTE sidelink users), and the technical enhancements / modifications involved should only apply to NR sidelink.

[0030] Specifically, there are currently two main coexistence schemes for the same channel: one is the static / semi-static coexistence scheme, the main principle of which is to allow the resource pool of LTE sidelink and the resource pool of NR sidelink to be reused in the time domain and / or frequency domain; the other is the dynamic coexistence scheme, that is, without distinguishing between the resource pools of LTE sidelink and NR sidelink, both of which work in the same resource pool.

[0031] For terminal types capable of coexisting on the same channel, at least Category I, Category II, and Category III terminals should be considered. For example... Figure 3 As shown, the first type of terminal has both an LTE module and an NR module, the second type of terminal only has an NR module, and the third type of terminal only has an LTE module. Correspondingly, the first type of terminal can perform LTE sidelink detection through the LTE module and share the detection results with the NR module in the second type of terminal to assist the NR module in resource selection.

[0032] To ensure the normal operation of the three types of terminals under coexisting channel conditions, it is necessary to avoid using the same time-frequency resources as much as possible to reduce resource conflicts. However, since the NR module cannot detect LTE SCI, and the LTE module cannot detect NR SCI, the second and third types of terminals cannot perform SCI detection on each other, and therefore cannot obtain each other's resource usage information. This could potentially lead to the second and third types of terminals using the same time-frequency resources, resulting in a high probability of resource conflicts.

[0033] At present, in order to enable different terminals to obtain the resource usage of each other, Toyota company proposes in document R1-2300380 that the SCI mutual detection mechanism between different types of terminals should be studied. In addition, there is no other detailed solution to enable different terminals to obtain the resource usage of each other.

[0034] However, for the SCI mutual detection mechanism proposed by Toyota company, in order to realize the SCI mutual detection between LTE sidelink terminals and NR sidelink terminals, the existing protocol will be greatly changed, which involves complicated technical details and will increase the communication overhead of the terminal. In addition, this mechanism needs to change the protocol of LTE sidelink, so it does not fully comply with the current standardization direction. However, in the co-channel coexistence scenario, if different types of terminals cannot obtain the resource usage of each other, it will reduce the communication reliability.

[0035] In order to at least partially solve the above problems, in the present embodiment, by designing the second level SCI (i.e. SCI format 2-C, also known as SCI format 2-C) in NR sidelink, the second terminal can obtain the resource reservation of the third type of terminal and other first type of terminal by receiving / demodulating the SCI sent by the first terminal, so as to reduce the resource conflict probability between terminals and improve the communication reliability in the co-channel coexistence scenario. Here, the resource reservation of the terminal refers to the resource usage of the terminal. The first terminal can be the aforementioned first type of terminal.

[0036] The above design of the second level SCI in NR sidelink can be to add and change the indication field of the existing second level SCI to realize the multiplexing of SCI format 2-C, so that SCI format 2-C can indicate the LTE sidelink resource usage / reservation. The above design of the second level SCI in NR sidelink can also be to design a new second level SCI, for example, SCI format 2-D, so that SCI format 2-D can indicate the LTE sidelink resource usage / reservation.

[0037] In the present embodiment, the LTE sidelink resource information can be obtained by the LTE module of the first terminal. Here, the LTE sidelink resource information can be used to indicate the LTE sidelink resource in the shared resource pool, and the LTE sidelink resource is the resource used for LTE sidelink communication. The shared resource pool refers to a resource pool in which the resources can be used by the first type of terminal, the second type of terminal and the third type of terminal.

[0038] Optionally, the LTE sidelink resource information acquired by the LTE module of the first terminal can be sidelink resources used by the LTE modules of the third type of terminal and other first type of terminals, or can be sidelink resources used by the LTE module of the first type of terminal (i.e., the first terminal itself).

[0039] In step S204, target sidelink control information is generated according to the LTE sidelink resource information, wherein the target sidelink control information includes an indication field for indicating the LTE sidelink resource.

[0040] In this embodiment, according to the detected LTE sidelink resource information, target sidelink control information can be generated. In order to achieve the purpose that the second terminal can obtain the resource use / reservation of the third type of terminal and other first type of terminals by receiving / demodulating the SCI sent by the first terminal, the generated target sidelink control information can be designed accordingly so that it can be included in the sidelink control information (i.e., the aforementioned second-level SCI) that the NR module can send. Here, the second terminal can be the aforementioned second type of terminal, or can be the second type of terminal and other first type of terminals except the aforementioned first terminal.

[0041] The generated target sidelink control information can include an indication field for indicating the LTE sidelink resource. Correspondingly, the corresponding design of the generated target sidelink control information can be the design of the indication field for indicating the LTE sidelink resource. By designing the indication field for indicating the LTE sidelink resource, the second-level SCI in the NR sidelink can indicate the LTE sidelink resource reservation.

[0042] In step S206, the generated target sidelink control information is sent to the second terminal by the new radio, NR, module of the first terminal.

[0043] For the generated target sidelink control information including the indication field for indicating the LTE sidelink resource, the sidelink control information can be sent to the second terminal by the NR module of the first terminal to achieve the acquisition of the LTE sidelink resource reservation by the second terminal. Correspondingly, the second terminal can obtain the LTE sidelink resource indicated in the indication field of the sidelink control information by demodulating the received sidelink control information, so as to determine the LTE sidelink resource reservation.

[0044] Optionally, considering that the terminals in the sidelink co-channel coexistence scenario can all be first-type terminals of the same type as the first terminal, the generated target sidelink control information can also be sent to other first-type terminals through the new radio, NR, module of the first terminal, so that each first-type terminal in the sidelink co-channel coexistence scenario can obtain the LTE sidelink resource reservation of each other.

[0045] Through steps S202 to S206, the LTE sidelink resource information is obtained through the long term evolution, LTE, module of the first terminal, the LTE sidelink resource information is used to indicate the LTE sidelink resource in the shared resource pool, and the LTE sidelink resource is a resource used for LTE sidelink communication; the target sidelink control information is generated according to the LTE sidelink resource information, the target sidelink control information includes an indication field used to indicate the LTE sidelink resource; and the generated target sidelink control information is sent to the second terminal through the new radio, NR, module of the first terminal. The transmission method of the sidelink control information in the related art is used for co-channel coexistence communication, and the problem of easy resource conflict is solved, and the occurrence rate of resource conflict is reduced.

[0046] In one example embodiment, when indicating the resources used / reserved by the third-type terminals and the first-type terminals in the shared resource pool, each terminal can implement the resource reservation indication in the form of indicating a plurality of tuples, and each tuple can include at least one resource. Correspondingly, the indication field used to indicate the LTE sidelink resource can include a group of information indication fields used to indicate N tuples of the LTE sidelink resource used / reserved. Here, the reserved resource can be understood as the used resource. N is a positive integer greater than or equal to 1.

[0047] In one example embodiment, the group of information indication fields includes at least one of the following:

[0048] a resource joint indication field, wherein the resource joint indication field is used to indicate the frequency domain location information of the initial transmission resource and the retransmission resource or the time domain interval information of the initial transmission resource and the retransmission resource in each tuple of the N tuples;

[0049] a resource reservation indication field, wherein the resource reservation indication field is used to indicate a reservation period corresponding to each tuple of the N tuples;

[0050] a specified resource location indication field, wherein the specified resource location indication field is used to indicate a location interval between a first resource of a latter tuple and a first resource of a former tuple in adjacent tuples of the N tuples;

[0051] a reference position indication field, wherein the reference position indication field is used to indicate a position of the first resource of the first tuple.

[0052] 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 the first resource of each tuple of the N tuples.

[0053] In the embodiment, the group of information indication fields corresponding to the N tuples reserved in the LTE sidelink resource can include: a resource combination indication field, a resource reservation indication field, a specified resource position indication field, a reference position indication field, and a lowest sub-channel index indication field.

[0054] The resource combination indication field can be used to indicate frequency domain position information of the initial transmission resource and the retransmission resource or time domain interval information of the initial transmission resource and the retransmission resource in each tuple of the N tuples.

[0055] The resource reservation indication field can be used to indicate a reservation period corresponding to each tuple of the N tuples, i.e., the resource reservation indication field is used to indicate N reservation periods, and the N reservation periods correspond one-to-one to the N tuples in the resource combination.

[0056] Taking the case that the resource reservation indication field occupies 4N bits, N is a positive integer, and the reservation period corresponding to each tuple is indicated by 4 bits, as defined in clause 14.2.1 of 3GPP Technical Specification TS 36.213.

[0057] The specified resource position indication field can be used to indicate a position interval between the first resource of the latter tuple and the first resource of the former tuple in adjacent tuples of the N tuples. The reference position indication field can be used to indicate a position of the first resource of the first tuple of the N tuples. Here, the first tuple refers to the first tuple corresponding to the time domain in the aforementioned resource combination indication field.

[0058] The lowest sub-channel index indication field can be used to indicate a lowest sub-channel index of the first resource of each tuple of the N tuples. The lowest sub-channel index indication field can have N indexes, and the N indexes can correspond one-to-one to the aforementioned N tuples.

[0059] Through the embodiment, by including the group of indication fields of the N tuples of at least one of the resource combination indication field, the resource reservation indication field, the specified resource position indication field, the reference position indication field, and the lowest sub-channel index indication field, the accuracy of information transmission can be improved.

[0060] In an exemplary embodiment, when a set of information indication fields includes a resource joint indication field, and the resource joint indication field is used at least to indicate the frequency domain location information of the initial 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 sub-channels of the LTE sidelink in the resource pool.

[0061] Resource union indicates domain occupancy Taking 1 bit as an example, where N is a positive integer, This refers to the number of sub-channels of the LTE sidelink in the resource pool, indicating a total of N used / reserved tuples. The time-frequency domain resources corresponding to each tuple are provided by... Each bit is used for indication. This includes, as defined in Clause 14.1.1.4C of 3GPP Technical Specification TS36.213, Each bit indicates the frequency domain location information of the primary and retransmission resources in a tuple.

[0062] When a set of information indication fields includes a resource joint indication field, and the resource joint indication field is used to indicate at least the time-domain interval information of the initial transmission resource and the retransmission resource in each tuple, the time-domain interval corresponding to the time-domain interval information indicated by the resource joint indication field is in the unit of LTE side link subframe, or in the unit of NR side link time slot.

[0063] Optionally, when the resource joint indication field is used to indicate the frequency domain location information of the primary and retransmission resources in each tuple and the time domain interval information of the primary and retransmission resources in each tuple, the resource joint indication field occupies... Taking M bits as an example, M bits indicate the time-domain interval information of the initial transmission resources and retransmission resources in a tuple. When the time-domain interval is timed in LTE sidelink subframes, M=4, and the indication method is as defined in Clause 14.1.1.4C of 3GPP Technical Specification TS 36.213. When the time-domain interval is timed in NR sidelink slots, M=7, and the 7 bits indicate the decimal value of the time-domain interval of the initial transmission resources and retransmission resources.

[0064] Optionally, when the resource joint indication field is used to indicate the time-domain interval information of the initial transmission resources and retransmission resources in each tuple, taking the resource joint indication field occupying M*N bits as an example, where N is a positive integer, a total of N used / reserved tuples are indicated. The time-domain resources corresponding to each tuple are indicated by M bits, that is, each M bits indicate the time-domain interval information of the initial transmission resources and retransmission resources in a tuple. When the time-domain interval is timed in LTE sidelink subframes, M=4, and the indication method is as defined in Clause 14.1.1.4C of 3GPP Technical Specification TS 36.213. When the time-domain interval is timed in NR sidelink slots, M=7, and the decimal value indicated by the 7 bits is the time-domain interval of the initial transmission resources and retransmission resources.

[0065] Optionally, if the number of tuples actually indicated by the resource union indication field is less than N, for example, only N-2 tuples actually need to be indicated, then depending on the UE implementation, the aforementioned Three of the bits If the three M bits out of the aforementioned M*N bits are set to the same value, the corresponding indication fields of “resource reservation”, “first resource position” and “lowest sub-channel index” will also be processed in a similar way.

[0066] When a 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 to indicate 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.

[0067] Occupied by reference subframe Taking a 10+4=14-bit configuration as an example, the high 10 bits (corresponding to decimal values ​​of 0-1023) indicate the frame index of the frame containing the reference subframe, and the low 4 bits (corresponding to decimal values ​​of 0-15, but actually only 0-9 are used) indicate the subframe index of the reference subframe within the corresponding frame. This frame index can be either an SFN (system frame number) or a DFN (direct frame number).

[0068] When a set of information indication fields includes a reference location indication field, and the location indicated by the reference location indication field is the location of the reference time slot, the reference location indication field is used to indicate 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.

[0069] Reference time slot occupancy bit, u is a NR sidelink subcarrier spacing coefficient. The high 10 bits (i.e. the decimal indication value corresponding to 0-1023) indicate the frame index of the frame in which the reference time slot is located, and the low bit corresponds to the decimal indication value indicating the time slot index of the reference time slot in the corresponding frame. The frame index here is similar to the description of the frame index described above, and will not be described here.

[0070] When the set of information indication field includes the specified resource location indication field, the interval indicated by the specified resource location indication field is in units of LTE sidelink subframes, or in units of NR sidelink time slots.

[0071] Taking the first resource location as an example, the first resource location can be an LTE sidelink subframe index, occupying 8*(N-1) bits, N being a positive integer. Among them, the decimal value corresponding to every 8 bits is used to indicate the time domain interval between the first resource in a tuple (starting from the second tuple in time domain) and the first resource in the last tuple. Specifically, 8 bits can indicate an interval of 0-255 subframes. In addition, the first resource location can also be an NR sidelink time slot index, occupying 8*(N-1) bits, N being a positive integer. Among them, the decimal value corresponding to every 8 bits is used to indicate the time domain interval between the first resource in a tuple (starting from the second tuple in time domain) and the first resource in the last tuple. Specifically, 8 bits can indicate an interval of 0-255 time slots.

[0072] When the set of information indication field includes the 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 sidelink in the resource pool.

[0073] Taking the case that the lowest subchannel index indication field occupies bits as an example, the decimal value corresponding to every bit indicates the lowest subchannel index of the first resource of a tuple, N being a positive integer, is the number of subchannels of the LTE sidelink in the resource pool.

[0074] Through the embodiment, by setting the resource joint indication field, the specified resource location indication field, the reference location indication field and the lowest subchannel index indication field according to the requirements of the related protocol, the integrity of the resource reservation information obtained by different terminals can be improved under the condition of ensuring the complete and accurate transmission of information, thereby improving the communication reliability.

[0075] In an example 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.

[0076] Taking 3N bits occupied by the priority indication field as an example, N is a positive integer, the priority indication field is used to indicate a priority of the resources used / reserved by the third type of terminal and the other first type of terminals using the LTE module for LTE sidelink detection, and a total of N priorities are indicated, and 3 bits of each priority are as defined in clause 4.4.5.1 of 3GPP Technical Specification TS 23.285, and correspond to one of the N tuples in the aforementioned resource joint indication field.

[0077] The priority of each tuple can be determined according to the priority of the resources in the tuple, that is, the priority indication field can be used to indicate the priority of the resources in each tuple. In the case that there are multiple resources in one tuple and the priority of each resource is different, the priority of the highest priority resource in the tuple is taken as the priority of the tuple.

[0078] Through the embodiment, by setting the priority indication field in the transmission of the set of information indication fields, the completeness of the resource reservation information obtained by different terminals can be improved, thereby improving the communication reliability.

[0079] In an example embodiment, the target sidelink control information further comprises:

[0080] a resource type indication field, wherein the resource type indication field is used to indicate that the resource indicated by the target sidelink control information is a resource for LTE sidelink communication or a resource for NR sidelink communication, when the resource type indication field indicates that the resource indicated by the target sidelink control information is a resource for LTE sidelink communication, the set of information indication fields is used to indicate N tuples of reserved LTE sidelink resources;

[0081] a providing / requesting indication field, wherein when the resource type indication field indicates that the resource indicated by the target sidelink control information is a resource for LTE sidelink communication, the providing / requesting indication field is used to indicate that the target sidelink control information is used to provide LTE sidelink resources, and when the resource type indication field indicates that the resource indicated by the target sidelink control information is a resource for NR sidelink communication, the providing / requesting indication field is used to indicate that the target sidelink control information is used to provide inter-terminal cooperation information of NR sidelink or is used to request inter-terminal cooperation information of NR sidelink.

[0082] In the case of adding and modifying the indication field of the existing second-level SCI to realize SCI format 2-C multiplexing, a resource type indication field and a providing / requesting indication field can be added in the target sidelink control information to distinguish the resources indicated by the generated target sidelink control information.

[0083] The resource type indication field, i.e., the aforementioned RAT indication, can indicate whether the resources indicated by the target sidelink control information are resources for LTE sidelink communication or resources for NR sidelink communication through the value of a bit.

[0084] Taking the case of RAT indication occupying 1 bit as an example, when the value of the bit is 0, the SCI format 2-C provides resources for LTE sidelink communication, and when the value of the bit is 1, the SCI format 2-C provides / requesting resources for NR sidelink communication.

[0085] The value of the bit of the aforementioned providing / requesting indication field can correspond to the value of the bit of the resource type indication field. That is, in the case of RAT indication occupying 1 bit, when the value of the bit is 0 (indicating that the SCI format 2-C provides resources for LTE sidelink communication), the value of the providing / requesting indication should be fixed as “0”, and at this time, the SCI format 2-C provides resources used / reserved by the third type of terminal and other first type of terminals through LTE module for LTE sidelink detection. In the case of the value of the bit being 1 (indicating that the SCI format 2-C provides / requesting resources for NR sidelink communication), if the value of the providing / requesting indication is 0, the SCI format 2-C is used to provide NR sidelink inter-user cooperation information, and if the value of the providing / requesting indication is 1, the SCI format 2-C is used to request NR sidelink inter-user cooperation information.

[0086] Alternatively, in the case of designing a new second-level SCI (for example, SCI format 2-D) to enable the SCI format 2-D to indicate the LTE sidelink resource use / reservation situation, the new second-level SCI is only used to indicate the LTE sidelink resource use / reservation situation, and the target sidelink control information does not include the aforementioned resource type indication field and the providing / requesting indication field.

[0087] By the embodiment, when adding and changing the existing second-level SCI, the resource indicated in the transmitted target sidelink control information is distinguished as the resource for LTE sidelink communication or the resource for NR sidelink communication by setting the resource type indication field and the providing / requesting indication field, so that the identification efficiency of the received information by the receiving terminal can be improved.

[0088] In one example embodiment, the target sidelink control information further comprises:

[0089] a transmission type indication field, wherein the transmission type indication field is used to indicate the transmission type of the target sidelink control information, and the transmission type comprises at least one of the following: broadcast, unicast, groupcast;

[0090] padding information, wherein the padding information is used to fill the target sidelink control information to the number of bits occupied reaching the preset value when the number of bits occupied by the target sidelink control information is less than the preset value.

[0091] When the SCI format 2-C multiplexing is realized by adding and changing the indication field of the existing second-level SCI, the target sidelink control information can further comprise the transmission type indication field and the padding information in addition to the indication field in the foregoing embodiments.

[0092] The bit value of the transmission type indication field can correspond to the bit value of the resource type indication field. For example, when the transmission type indication field occupies 2 bits, the corresponding relationship between the 2-bit value of the transmission type indication and the transmission type can be as shown in Table 1.

[0093] Table 1

[0094]

[0095] For example, when the value of the RAT indication is 1, the corresponding 2-bit value of the transmission type indication should be fixed as “1, 0”, and at this time the transmission type only supports unicast. When the value of the RAT indication is 0, the transmission type supports four cases as shown in Table 1.

[0096] Optionally, when the transmission type is unicast or groupcast with HARQ-ACK information containing ACK (acknowledgement) or NACK (negative acknowledgement), the resource provided by the SCI format 2-C is the resource used / reserved by the third type of terminal and other first type of terminals through LTE module for LTE sidelink detection, which conflicts with at least one resource used / reserved by at least one second type of terminal.

[0097] For padding information, taking SCI format 2-C as an example, when the total number of bits occupied by SCI format 2-C (before padding) does not reach the preset value, padding bits should be used to pad SCI format 2-C so that the total number of bits occupied reaches the preset value; otherwise, the padding bits do not exist.

[0098] Optionally, in the implementation of SCI format 2-C multiplexing by adding and modifying the indication field of the existing second-level SCI, the various indication fields in the foregoing embodiments can be added and modified to the indication field of the existing second-level SCI. In the target sidelink control information generated, in addition to the foregoing indication fields, other indication fields of the existing second-level SCI can also 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.

[0099] The HARQ process number can occupy 4 bits, the new data indication occupies 1 bit, the redundancy version occupies 2 bits (as defined in Table 7.3.1.1.1-2 of 3GPP Technical Specification TS 38.212), the source ID occupies 8 bits (as defined in Clause 8.1 of 3GPP Technical Specification TS 38.214), the target ID occupies 16 bits (as defined in Clause 8.1 of 3GPP Technical Specification TS 38.214), the HARQ feedback enable / disable indication occupies 1 bit (as defined in Clause 16.3 of 3GPP Technical Specification TS 38.213), and the CSI request occupies 1 bit (as defined in Clause 8.1 of 3GPP Technical Specification TS 38.214). It should be noted that the settings of the priority indication field, the resource joint 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 in the foregoing embodiments can be performed only when the value of the RAT indication is set to 0.

[0100] In addition, in the case where the value of the RAT indication is set to 1 and the value of the provide / request indication is set to 0, the remaining indication fields in the target sidelink control information, in addition to the other indication fields of the existing second-level SCI in the foregoing embodiments, are set as follows:

[0101] The resource joint occupies bits, as defined in Clause 8.1.5A of 3GPP Technical Specification TS 38.214, where and is the number of entries in the higher layer parameter sl-ResourceReservePeriodList when the higher layer parameter sl-MultiReserveResource is configured; otherwise . is the number of sub-channels in the NR sidelink resource pool, provided by the higher layer parameter sl-NumSubchannel;

[0102] first resource location, occupying 8 bits, as defined in clause 8.1.5A of 3GPP Technical Specification TS 38.214;

[0103] reference slot location, occupying bits, as defined in clause 8.1.5A of 3GPP Technical Specification TS 38.214, where u is as defined in Table 4.2-1 of 3GPP Technical Specification TS 38.211;

[0104] resource set type, occupying 1 bit, where a value of 0 indicates a preferred resource set and a value of 1 indicates a non-preferred resource set;

[0105] lowest sub-channel index, occupying bits, as defined in clause 8.1.5A of 3GPP Technical Specification TS 38.214.

[0106] In the case where the RAT indication value is set to 1 and the provided / requested indication value is set to 1, in addition to the other indication fields of the existing second stage SCI in the aforementioned embodiments, the remaining indication fields in the target sidelink control information are set as follows:

[0107] priority, occupying 3 bits, as defined in clause 5.4.3.3 of 3GPP Technical Specification TS 23.287 and clause 5.22.1.3.1 of Technical Specification TS 38.321. A priority indication field value of “000” corresponds to a priority value of “1”, a value of “001” corresponds to a priority value of “2”, and so on;

[0108] number of sub-channels, occupying bits, as defined in clause 8.1.4A of 3GPP Technical Specification TS 38.214;

[0109] resource reservation period, occupying bits, as defined in clause 8.1.4A of 3GPP Technical Specification TS 38.214, where is the number of entries in the higher layer parameter sl-ResourceReservePeriodList when the higher layer parameter sl-MultiReserveResource is configured; otherwise occupying 0 bits;

[0110] Resource selection window position, occupies one bit, as defined in 3GPP Technical Specification TS 38.214 clause 8.1.4A, where u is as defined in 3GPP Technical Specification TS 38.211 Table 4.2-1;

[0111] Padding bits;

[0112] Resource set type, occupies 1 bit, if the higher layer parameter sl-DetermineResourceType is configured as "ueb", the value 0 indicates that the UE requests to provide inter-UE coordination information of preferred resource set, the value 1 indicates that the UE requests to provide inter-UE coordination information of non-preferred resource set; otherwise, occupies 0 bit.

[0113] The SCI format 2-C obtained by adding and modifying the indication field of the existing second SCI can be as follows:

[0114] HARQ process number, occupies 4 bits;

[0115] New data indication, occupies 1 bit;

[0116] Redundancy version, occupies 2 bits, as defined in 3GPP Technical Specification TS 38.212 Table 7.3.1.1.1-2;

[0117] Source ID, occupies 8 bits, as defined in 3GPP Technical Specification TS 38.214 clause 8.1;

[0118] Target ID, occupies 16 bits, as defined in 3GPP Technical Specification TS 38.214 clause 8.1;

[0119] HARQ feedback enable / disable indication, occupies 1 bit, as defined in 3GPP Technical Specification TS 38.213 clause 16.3;

[0120] CSI request, occupies 1 bit, as defined in 3GPP Technical Specification TS 38.214 clause 8.1;

[0121] RAT indication, occupies 1 bit, when the value of this bit is 0, the SCI format 2-C provides resources for LTE sidelink communication, when the value of this bit is 1, the SCI format 2-C provides / requests resources for NR sidelink communication;

[0122] Transmission type indication, occupying 2 bits, used to indicate the transmission type of SCI format 2-C, the corresponding 2-bit value of the transmission type indication and the corresponding relationship of the transmission type When the value of the RAT indication is 1, the corresponding 2-bit value of the transmission type indication should be fixed as "1, 0", that is, the transmission type only supports unicast at this time;

[0123] When the value of the RAT indication is 0, the transmission type supports four cases in Table 1. When the transmission type is unicast or HARQ, the ACK information contains ACK (acknowledgment) or NACK (negative acknowledgment) for multicast, the resource provided by the SCI format 2-C is the resource used / reserved by the third type of terminal obtained by the first type of terminal through the LTE module for LTE sidelink detection, which conflicts with at least one resource used / reserved by at least one second type of terminal;

[0124] Provide / request indication, occupying 1 bit, when the value of the RAT indication is 0, the value of the provide / request indication should be fixed as "0", at this time, the SCI format 2-C provides the resource used / reserved by the third type of terminal obtained by the first type of terminal through the LTE module for LTE sidelink detection;

[0125] When the value of the RAT indication is 1 and the value of the provide / request indication is 0, the 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 provide / request indication is 1, the SCI format 2-C is used to request NR sidelink inter-user cooperation information;

[0126] If the value of the "RAT indication" is set to 0, the remaining indication fields of the SCI format 2-C are set as follows:

[0127] Priority, occupying 3N bits, N being a positive integer, used to indicate the priority of the resource used / reserved by the third type of terminal obtained by the first type of terminal through the LTE module for LTE sidelink detection, a total of N priorities are indicated, and each priority occupies 3 bits as defined in clause 4.4.5.1 of 3GPP Technical Specification TS 23.285, and corresponds to one of the N tuples in the "resource joint" described below; In this embodiment, the values of the same letters are the same, and preferably, the value of N is 2, 3 or 4.

[0128] The resource joint can occupy bits, where N is a positive integer, This refers to the number of sub-channels of the LTE sidelink in the resource pool, indicating a total of N used / reserved tuples. The time-frequency domain resources corresponding to each tuple are provided by... Each bit is used for indication. One bit indicates the frequency domain location information of the initial transmission resources and retransmission resources in a tuple, as defined in Clause 14.1.1.4C of 3GPP Technical Specification TS 36.213; M bits indicate the time domain interval information of the initial transmission resources and retransmission resources in a tuple. When the time domain interval is timed in LTE sidelink subframes, M=4, and the indication method is as defined in Clause 14.1.1.4C of 3GPP Technical Specification TS 36.213. When the time domain interval is timed in NR sidelink slots, M=7, and the decimal value indicated by the 7 bits is the time domain interval of the initial transmission resources and retransmission resources.

[0129] Alternatively, the resource union occupies M*N bits, where N is a positive integer, indicating N used / reserved tuples. The time-domain resources corresponding to each tuple are indicated by M bits, meaning each M bit indicates the time-domain interval information of the initial transmission and retransmission resources within a tuple. When the time-domain interval is timed in LTE sidelink subframes, M=4, and the indication method is as defined in Clause 14.1.1.4C of 3GPP Technical Specification TS 36.213; when the time-domain interval is timed in NR sidelink slots, M=7, and the 7 bits indicate the decimal value of the time-domain interval of the initial transmission and retransmission resources. Furthermore, if the actual number of tuples indicated by the "resource union" is less than N, for example, only N-2 tuples actually need to be indicated, then it depends on the UE implementation. Three of the bits If three M bits out of M*N bits are set to the same value, then "priority", "resource reservation", "first resource position" and "lowest sub-channel index" will also be processed in a similar way.

[0130] Resource reservation occupies 4N bits, where N is a positive integer, used to indicate N reservation periods and corresponds one-to-one with the N tuples in the "resource union". That is, the reservation period corresponding to each tuple is indicated by 4 bits, as defined in Clause 14.2.1 of 3GPP technical specification TS36.213.

[0131] The first resource position occupies 8*(N-1) bits when the LTE sidelink subframe index is used, N being a positive integer. Among them, every 8 bits of values correspond to a decimal value used to indicate the time domain interval of the first resource in a tuple (starting from the second tuple in the time domain) and the first resource in the previous tuple. Specifically, 8 bits can indicate an interval of 0-255 subframes; the first resource position occupies 8*(N-1) bits when the NR sidelink slot index is used, N being a positive integer. Among them, every 8 bits of values correspond to a decimal value used to indicate the time domain interval of the first resource in a tuple (starting from the second tuple in the time domain) and the first resource in the previous tuple. Specifically, 8 bits can indicate an interval of 0-255 slots;

[0132] When the reference position is a reference subframe position, the reference subframe is the subframe in which the first resource of the first tuple in the "resource joint" is located, and occupies =10+4=14 bits. Among them, the high 10 bits (i.e., the decimal indication value is 0-1023) indicate the frame index of the frame in which the reference subframe is located, and the low 4 bits (i.e., the decimal indication value is 0-15, but actually only 0-9 is taken) indicate the subframe index of the reference subframe in the corresponding frame. The frame index can be SFN (system frame number) or DFN (direct frame number); when the reference position is a reference slot position, the reference slot is the slot in which the first resource of the first tuple in the "resource joint" is located, and occupies bits, u being the NR sidelink subcarrier spacing coefficient. Among them, the high 10 bits (i.e., the decimal indication value is 0-1023) indicate the frame index of the frame in which the reference slot is located, and the low bits correspond to a decimal indication value indicating the slot index of the reference slot in the corresponding frame. The frame index can be SFN (system frame number) or DFN (direct frame number);

[0133] The lowest subchannel index occupies bits, which is used to indicate the lowest subchannel index (in terms of LTE sidelink subchannels) of the first resource of each tuple, i.e., every bit corresponds to a decimal value indicating the lowest subchannel index of the first resource of a tuple, and N indices correspond to N tuples in the "resource joint". Among them, N is a positive integer, is the number of sub-channels of the LTE sidelink in the resource pool;

[0134] padding bits, when the total number of bits (before padding) occupied by the SCI format 2-C does not reach the pre-configured value, padding bits shall be used to pad the SCI format 2-C so that the total number of bits occupied reaches the pre-configured value; otherwise, the padding bits do not exist.

[0135] If the value of “RAT indication” is set to 1 and the value of “offer / request indication” is set to 0, the remaining indication fields of the SCI format 2-C are set as follows:

[0136] resource joint, occupies bits as defined in Clause 8.1.5A of 3GPP Technical Specification TS 38.214, wherein and is the number of entries in the higher layer parameter sl-ResourceReservePeriodList when the higher layer parameter sl-MultiReserveResource is configured; otherwise

[0137] is the number of sub-channels in the NR sidelink resource pool, provided by the higher layer parameter sl-NumSubchannel;

[0138] first resource location, occupies 8 bits as defined in Clause 8.1.5A of 3GPP Technical Specification TS 38.214;

[0139] reference slot location, occupies bits as defined in Clause 8.1.5A of 3GPP Technical Specification TS 38.214, wherein u is as defined in Table 4.2-1 of 3GPP Technical Specification TS 38.211;

[0140] resource set type, occupies 1 bit, wherein a value of 0 indicates a preferred resource set and a value of 1 indicates a non-preferred resource set;

[0141] lowest sub-channel index, occupies bits as defined in Clause 8.1.5A of 3GPP Technical Specification TS 38.214;

[0142] If the value of “RAT indication” is set to 1 and the value of “offer / request indication” is set to 1, the remaining indication fields of the SCI format 2-C are set as follows:

[0143] Priority, occupying 3 bits, as defined in clause 5.4.3.3 of 3GPP Technical Specification TS 23.287 and clause 5.22.1.3.1.3 of Technical Specification TS 38.321. The priority indication field takes the value "000" corresponding to the priority value "1", takes the value "001" corresponding to the priority value "2", and so on;

[0144] Number of sub-channels, occupying bits, as defined in clause 8.1.4A of 3GPP Technical Specification TS 38.214;

[0145] Resource reservation period, occupying bits, as defined in clause 8.1.4A of 3GPP Technical Specification TS 38.214, wherein is the number of entries in the higher layer parameter sl-ResourceReservePeriodList when the higher layer parameter sl-MultiReserveResource is configured; otherwise, occupying 0 bits;

[0146] Resource selection window position, occupying bits, as defined in clause 8.1.4A of 3GPP Technical Specification TS 38.214, wherein u is as defined in Table 4.2-1 of 3GPP Technical Specification TS 38.211;

[0147] Resource set type, occupying 1 bit, if the higher layer parameter sl-DetermineResourceType is configured as "ueb", taking the value 0 means requesting to provide inter-UE cooperation information of preferred resource set, taking the value 1 means requesting to provide inter-UE cooperation information of non-preferred resource set; otherwise, occupying 0 bits;

[0148] Padding bits.

[0149] Optionally, when the LTE sidelink resource usage / reservation is indicated by designing a new second-level SCI (for example, SCI format 2-D), in addition to the indication field in the corresponding embodiment described above, a transmission type indication field and other indication fields of the existing second-level SCI can also 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.

[0150] The above SCI format 2-D can contain the following information:

[0151] HARQ process number, occupying 4 bits;

[0152] New data indication, occupying 1 bit;

[0153] Redundancy version, occupying 2 bits, as defined in Table 7.3.1.1.1-2 of 3GPP Technical Specification TS 38.212;

[0154] Source ID, occupying 8 bits, as defined in Clause 8.1 of 3GPP Technical Specification TS 38.214;

[0155] Target ID, occupying 16 bits, as defined in Clause 8.1 of 3GPP Technical Specification TS 38.214;

[0156] HARQ feedback enable / disable indication, occupying 1 bit, as defined in Clause 16.3 of 3GPP Technical Specification TS 38.213;

[0157] CSI request, occupying 1 bit, as defined in Clause 8.1 of 3GPP Technical Specification TS 38.214;

[0158] Transmission type indication, occupying 2 bits, used to indicate the transmission type of SCI format 2-D, the corresponding relationship between the 2-bit value of the transmission type indication and the transmission type is shown in Table 2:

[0159] Table 2

[0160]

[0161] Optionally, when the transmission type is unicast or groupcast with HARQ-ACK information containing ACK or NACK, the resource provided by the SCI format 2-D is in conflict with at least one resource used / reserved by at least one second type of terminal, which is the resource used / reserved by the third type of terminal and other first type of terminal obtained by the first type of terminal through LTE module for LTE sidelink detection;

[0162] Priority, occupying 3N bits, N being a positive integer, used to indicate the priority of the resource used / reserved by the third type of terminal and other first type of terminal obtained by the first type of terminal through LTE module for LTE sidelink detection, a total of N priorities, each priority occupying 3 bits, as defined in Clause 4.4.5.1 of 3GPP Technical Specification TS 23.285, and corresponding to one of the N tuples in the following "resource association";

[0163] Resource association, which can occupy bits, where N is a positive integer, This refers to the number of sub-channels of the LTE sidelink in the resource pool, indicating a total of N used / reserved tuples. The time-frequency domain resources corresponding to each tuple are provided by... Each bit is used for indication. One bit indicates the frequency domain location information of the initial transmission and retransmission resources in a tuple, as defined in Clause 14.1.1.4C of 3GPP Technical Specification TS 36.213; M bits indicate the time domain interval information of the initial transmission and retransmission resources in a tuple. When the time domain interval is timed in LTE sidelink subframes, M=4, and the indication method is as defined in Clause 14.1.1.4C of 3GPP Technical Specification TS 36.213; when the time domain interval is timed in NRsidelink slots, M=7, and the decimal value indicated by the 7 bits is the time domain interval of the initial transmission and retransmission resources.

[0164] Resource union can also occupy M*N bits, where N is a positive integer, indicating N used / reserved tuples. The time-domain resources corresponding to each tuple are indicated by M bits, meaning each M bit indicates the time-domain interval information of the initial transmission and retransmission resources within a tuple. When the time-domain interval is timed in LTE sidelink subframes, M=4, and the indication method is as defined in Clause 14.1.1.4C of 3GPP Technical Specification TS36.213. When the time-domain interval is timed in NRsidelink slots, M=7, and the 7 bits indicate the decimal value of the time-domain interval of the initial transmission and retransmission resources. Furthermore, if the actual number of tuples indicated by "resource union" is less than N, for example, only N-2 tuples need to be indicated, then it depends on the UE implementation. Three of the bits If three M bits out of M*N bits are set to the same value, then "priority", "resource reservation", "first resource position" and "lowest sub-channel index" will also be processed in a similar way.

[0165] Resource reservation occupies 4N bits, where N is a positive integer, used to indicate N reservation periods and corresponds one-to-one with the N tuples in the "resource union". That is, the reservation period corresponding to each tuple is indicated by 4 bits, as defined in Clause 14.2.1 of 3GPP technical specification TS36.213.

[0166] The first resource position occupies 8*(N-1) bits when the first resource position is an LTE sidelink subframe index, N being a positive integer. Each 8-bit value corresponds to a decimal value indicating the time domain interval between the first resource in a tuple (starting from the second time domain tuple) and the first resource in the previous tuple. Specifically, 8 bits can indicate an interval of 0-255 subframes. The first resource position occupies 8*(N-1) bits when the first resource position is an NR sidelink slot index, N being a positive integer. Each 8-bit value corresponds to a decimal value indicating the time domain interval between the first resource in a tuple (starting from the second time domain tuple) and the first resource in the previous tuple. Specifically, 8 bits can indicate an interval of 0-255 slots.

[0167] The reference position occupies 10+4=14 bits when the reference position is a reference subframe position, the reference subframe being the subframe in which the first resource of the first tuple in the "resource combination" is located. The high 10-bit (i.e., the decimal indication value is 0-1023) indicates the frame index of the frame in which the reference subframe is located, and the low 4-bit (i.e., the decimal indication value is 0-15, but only 0-9 is actually taken) indicates the subframe index of the reference subframe in the corresponding frame. The frame index can be SFN (system frame number), and the frame index can also be DFN (direct frame number). The reference position occupies 10+4=14 bits when the reference position is a reference subframe position, the reference subframe being the subframe in which the first resource of the first tuple in the "resource combination" is located. The high 10-bit (i.e., the decimal indication value is 0-1023) indicates the frame index of the frame in which the reference subframe is located, and the low 4-bit (i.e., the decimal indication value is 0-15, but only 0-9 is actually taken) indicates the subframe index of the reference subframe in the corresponding frame. The frame index can be SFN (system frame number), and the frame index can also be DFN (direct frame number). The reference position occupies 10+4=14 bits when the reference position is a reference subframe position, the reference subframe being the subframe in which the first resource of the first tuple in the "resource combination" is located. The high 10-bit (i.e., the decimal indication value is 0-1023) indicates the frame index of the frame in which the reference subframe is located, and the low 4-bit (i.e., the decimal indication value is 0-15, but only 0-9 is actually taken) indicates the subframe index of the reference subframe in the corresponding frame. The frame index can be SFN (system frame number), and the frame index can also be DFN (direct frame number). The reference position occupies 10+4=14 bits when the reference position is a reference subframe position, the reference subframe being the subframe in which the first resource of the first tuple in the "resource combination" is located. The high 10-bit (i.e., the decimal indication value is 0-1023) indicates the frame index of the frame in which the reference subframe is located, and the low 4-bit (i.e., the decimal indication value is 0-15, but only 0-9 is actually taken) indicates the subframe index of the reference subframe in the corresponding frame. The frame index can be SFN (system frame number), and the frame index can also be DFN (direct frame number).

[0168] The lowest subchannel index occupies 8*N bits, which is used to indicate the lowest subchannel index (in terms of LTE sidelink subchannels) of the first resource of each tuple, i.e., each 8-bit value indicates the lowest subchannel index of the first resource of a tuple. N indices correspond to N tuples in the "resource combination". N is a positive integer. The lowest subchannel index occupies 8*N bits, which is used to indicate the lowest subchannel index (in terms of LTE sidelink subchannels) of the first resource of each tuple, i.e., each 8-bit value indicates the lowest subchannel index of the first resource of a tuple. N indices correspond to N tuples in the "resource combination". N is a positive integer. The lowest subchannel index occupies 8*N bits, which is used to indicate the lowest subchannel index (in terms of LTE sidelink subchannels) of the first resource of each tuple, i.e., each 8-bit value indicates the lowest subchannel index of the first resource of a tuple. N indices correspond to N tuples in the "resource combination". N is a positive integer. is a number of sub-channels of LTE sidelink in a resource pool.

[0169] Through the embodiment, by setting the transmission type indication field and the padding information in the target sidelink control information, the identification efficiency of the received information by the receiving terminal can be improved while ensuring the integrity of the transmission information.

[0170] In one exemplary embodiment, the target sidelink control information is second level sidelink communication information, i.e., second level SCI.

[0171] Based on the sidelink co-channel coexistence technology researched by 3GPP in Release-18 and the premise that the technology should not affect the existing LTE sidelink protocol, the technical enhancement / modification involved is only for NR sidelink, the target sidelink control information is set to second level sidelink communication information, and the volume of the addition or modification in the foregoing embodiments is performed on the second level sidelink communication information. While conforming to the current standardization orientation, no large modification is introduced to the existing protocol, and no large communication overhead is added to the terminal.

[0172] According to another aspect of the embodiment of the present application, a sidelink control information transmission method is also provided. Optionally, in the embodiment, the sidelink control information transmission method can be applied in the hardware environment composed of the first terminal device 102, the second terminal device 104 and the server 106 as shown in Figure 1 The description has been made above, and will not be repeated here.

[0173] Taking the first terminal device 104 (receiving terminal) as an example for executing the sidelink control information transmission method in the embodiment, Figure 4 is a flow diagram of an optional sidelink control information transmission method according to an embodiment of the present application, as shown in Figure 4 The flow of the method can include the following steps:

[0174] In step S402, the target sidelink control information sent by the first terminal is received by the new radio, NR, module of the second terminal, wherein the target sidelink control information includes an indication field for indicating LTE sidelink resources in a shared resource pool, and the LTE sidelink resources are resources for LTE sidelink communication.

[0175] The application scenario of the sidelink control information transmission method in this embodiment is similar to that of the previous embodiments, and will not be repeated here. The target sidelink control information sent by the first terminal and received by the NR module of the second terminal can be sidelink control information containing various indication fields and other related information in the previous embodiments. The second terminal can be the same as described in the previous embodiments, and will not be repeated here.

[0176] Step S404: Determine the LTE sidelink resources in the shared resource pool based on the received target sidelink control information.

[0177] Upon receiving the target side link control information, the second terminal can demodulate the target side link control information according to the setting method of various indication fields and other related information in the target side link control information in the aforementioned embodiment. Based on the demodulation result, the LTE side link resources in the shared resource pool are determined, that is, the resources occupied by the first type of terminal and the third type of terminal containing the LTE module in the shared resource pool.

[0178] Through steps S402 to S404 above, the second terminal receives the target sidelink control information sent by the first terminal through its New Radio (NR) module. The target sidelink control information includes an indication field for indicating LTE sidelink resources in the shared resource pool. The LTE sidelink resources are resources used for LTE sidelink communication. Based on the received target sidelink control information, the LTE sidelink resources in the shared resource pool are determined. This solves the problem of resource conflicts that easily occur when the sidelink control information transmission method in related technologies is used for co-channel communication, and reduces the occurrence rate of resource conflicts.

[0179] The method for transmitting sidelink control information in this application embodiment is explained below with reference to optional examples. In this optional example, the first terminal is a first type of terminal, the second terminal is a second type of terminal, the specified resource location indication field is a first resource location indication field, and the sidelink control information is SCI.

[0180] This optional example provides a resource indication method for sidelink co-channel coexistence. By reusing the second-level sidelink control information (SCI) or designing a new second-level SCI, the second terminal can obtain the resource usage / reservation status of the third type of terminal and other first type of terminals by receiving / demodulating the SCI sent by the first terminal. This reduces the probability of resource conflicts between terminals and improves communication reliability in the co-channel coexistence scenario.

[0181] like Figure 5 As shown, the process of transmitting sidelink control information in this optional example may include the following steps:

[0182] In step S502, the LTE module of the first type of terminal performs LTE sidelink detection to obtain an indication of the LTE sidelink resource usage / reservation.

[0183] In step S504, SCI (multiplexed SCI format 2-C or new SCI format 2-D) indicating the LTE sidelink resource usage / reservation is generated.

[0184] In step S506, the first type of terminal sends the SCI to the second type of terminal and other first type of terminals.

[0185] In step S508, the second type of terminal and other first type of terminals obtain the resource usage / reservation of the third type of terminal and other first type of terminals by receiving / demodulating the SCI sent by the first type of terminal.

[0186] Through the optional example, by the method of multiplexing SCI format 2-C or the new second-level SCI design method, different terminals can obtain each other's resource usage with little modification to the existing protocol, thereby reducing the resource conflict probability between terminals and improving communication reliability.

[0187] It should be noted that, for each of the method embodiments described above, in order to simplify the description, each is described as a combination of a series of actions, but those skilled in the art should appreciate that the present application is not limited by the order of the actions described, because according to the present application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should appreciate that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0188] From the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software and a necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is a better implementation. Based on this understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM (Read-Only Memory), a RAM (Random Access Memory), a magnetic disk, an optical disk), and includes a number of instructions for causing a terminal device (which can be a mobile phone, a computer, a server, or a network device, etc.) to execute the methods of the various embodiments of the present application.

[0189] According to a further aspect of the embodiments of the present application, a device for transmitting sidelink control information is also provided, which can be applied to a smart device. Figure 6 is a structural block diagram of an optional device for transmitting sidelink control information according to the embodiments of the present application, as shown in Figure 6 The device can include:

[0190] The acquisition unit 602 is configured to acquire, by the LTE module of the first terminal, LTE sidelink resource information, wherein the LTE sidelink resource information is used to indicate LTE sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication.

[0191] The generation unit 604 is connected with the acquisition unit 602 and is configured to generate target sidelink control information according to the LTE sidelink resource information, wherein the target sidelink control information includes an indication field used to indicate the LTE sidelink resources.

[0192] The sending unit 606 is connected with the generation unit 604 and is configured to send the generated target sidelink control information to the second terminal by the NR module of the first terminal.

[0193] It should be noted that the acquisition unit 602 in this embodiment can be configured to perform the above step S202, the generation unit 604 in this embodiment can be configured to perform the above step S204, and the sending unit 606 in this embodiment can be configured to perform the above step S206.

[0194] By the above modules, the LTE sidelink resource information is acquired by the LTE module of the first terminal, wherein the LTE sidelink resource information is used to indicate LTE sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication; the target sidelink control information is generated according to the LTE sidelink resource information, wherein the target sidelink control information includes an indication field used to indicate the LTE sidelink resources; and the generated target sidelink control information is sent to the second terminal by the NR module of the first terminal, thereby solving the problem that the sidelink control information transmission method in the related art is prone to resource conflict when used for same-channel coexistence communication, and reducing the resource conflict occurrence rate.

[0195] In one example embodiment, the indication field used to indicate the LTE sidelink resources includes a group of information indication fields used to indicate N tuples reserved in the LTE sidelink resources, wherein N is a positive integer greater than or equal to 1.

[0196] In one example embodiment, the group of information indication fields includes at least one of the following:

[0197] a resource joint indication field, wherein the resource joint indication field is used to indicate frequency domain location information of the initial transmission resource and the retransmission resource, or time domain interval information of the initial transmission resource and the retransmission resource in each of the N tuples;

[0198] a resource reservation indication field, wherein the resource reservation indication field is used to indicate a reservation period corresponding to each of the N tuples;

[0199] a specified resource location indication field, wherein the specified resource location indication field is used to indicate a location interval between a first resource of a latter tuple and a first resource of a former tuple in adjacent tuples of the N tuples;

[0200] a reference location indication field, wherein the reference location indication field is used to indicate a location of a first resource of a first tuple in the N tuples;

[0201] a lowest subchannel index indication field, wherein the lowest subchannel index indication field is used to indicate a lowest subchannel index of the first resource of each of the N tuples.

[0202] In an example embodiment, when the set of information indication fields includes the resource joint indication field, and the resource joint indication field is used to at least indicate frequency domain location information of the initial transmission resource and the retransmission resource in each of the tuples, a number of bits occupied by the frequency domain location information indicated by the resource joint indication field is set according to a number of subchannels of the LTE sidelink in the resource pool;

[0203] When the set of information indication fields includes the resource joint indication field, and the resource joint indication field is used to at least indicate time domain interval information of the initial transmission resource and the retransmission resource in each of the tuples, a time domain interval corresponding to the time domain interval information indicated by the resource joint indication field is in units of LTE sidelink subframes, or in units of NR sidelink slots;

[0204] When the set of information indication fields includes the reference location indication field, and the location indicated by the reference location indication field is a location of a reference subframe, the reference location indication field is used to indicate a frame index of a frame in which the reference subframe is located and a subframe index of the reference subframe in the frame in which the reference subframe is located, wherein the reference subframe is a subframe in which the first resource of the first tuple is located;

[0205] When the set of information indication fields includes the reference location indication field, and the location indicated by the reference location indication field is a location of a reference slot, the reference location indication field is used to indicate a frame index of a frame in which the reference slot is located and a slot index of the reference slot in the frame in which the reference slot is located, wherein the reference slot is a slot in which the first resource of the first tuple is located;

[0206] When the set of information indication field includes the specified resource location indication field, the location interval indicated by the specified resource location indication field is in units of LTE sidelink subframes, or in units of NR sidelink slots;

[0207] When the set of information indication field includes the minimum subchannel index indication field, the number of bits occupied by the minimum subchannel index indication field is set according to the number of subchannels of the LTE sidelink in the resource pool.

[0208] In an example embodiment, the set of information indication field further includes: a priority indication field, wherein the priority indication field is used to indicate the priority of each of the N tuples.

[0209] In an example embodiment, the target sidelink control information further includes:

[0210] a resource type indication field, wherein the resource type indication field is used to indicate whether the resource indicated by the target sidelink control information is a resource for LTE sidelink communication or a resource for NR sidelink communication, when the resource type indication field indicates that the resource indicated by the target sidelink control information is a resource for LTE sidelink communication, the set of information indication field is used to indicate the N tuples reserved in the LTE sidelink resource;

[0211] a providing / requesting indication field, wherein when the resource type indication field indicates that the resource indicated by the target sidelink control information is a resource for LTE sidelink communication, the providing / requesting indication field is used to indicate that the target sidelink control information is used to provide the LTE sidelink resource, when the resource type indication field indicates that the resource indicated by the target sidelink control information is a resource for NR sidelink communication, the providing / requesting indication field is used to indicate that the target sidelink control information is used to provide the inter-terminal cooperation information of the NR sidelink or is used to request the inter-terminal cooperation information of the NR sidelink.

[0212] In an example embodiment, the target sidelink control information further includes:

[0213] a transmission type indication field, wherein the transmission type indication field is used to indicate the transmission type of the target sidelink control information, and the transmission type includes at least one of the following: broadcast, unicast, groupcast;

[0214] padding information, wherein the padding information is used to pad the target sidelink control information to a preset value when the number of bits occupied by the target sidelink control information is less than the preset value.

[0215] In an example embodiment, the target sidelink control information is second-level sidelink communication information.

[0216] According to a further aspect of the embodiments of the present application, a device for transmitting sidelink control information is also provided. Figure 7 is a structural block diagram of an optional device for transmitting sidelink control information according to the embodiments of the present application, as shown in Figure 7 The device can include:

[0217] The receiving unit 702 is configured to receive, by the second terminal, target sidelink control information transmitted by the NR module of the first terminal, wherein the target sidelink control information includes an indication field for indicating LTE sidelink resources in the shared resource pool, and the LTE sidelink resources are resources for LTE sidelink communication.

[0218] The determining unit 704 is connected with the receiving unit 702 and configured to determine the LTE sidelink resources in the shared resource pool according to the received target sidelink control information.

[0219] By the above modules, the target sidelink control information transmitted by the first terminal is received by the NR module of the second terminal, wherein the target sidelink control information includes an indication field for indicating LTE sidelink resources in the shared resource pool, and the LTE sidelink resources are resources for LTE sidelink communication; and the LTE sidelink resources in the shared resource pool are determined according to the received target sidelink control information, thereby solving the problem that the sidelink control information transmission method in the related art is prone to resource conflict when used for co-channel coexistence communication, and reducing the resource conflict rate.

[0220] It should be noted that the above modules have the same examples and application scenarios as the corresponding steps, but are not limited to the contents disclosed in the above embodiments. It should be noted that the above modules as part of the device can run in the hardware environment as shown in Figure 1 , which can be implemented by software or hardware, wherein the hardware environment includes a network environment.

[0221] According to a further aspect of the embodiments of the present application, a storage medium is also provided, which can be located on a smart device. Optionally, in the present embodiment, the above-mentioned storage medium can be used to execute the program code of any of the sidelink control information transmission methods in the embodiments of the present application.

[0222] Optionally, in the present embodiment, the above-mentioned storage medium can be located on at least one of the plurality of network devices in the network shown in the above-mentioned embodiments.

[0223] Optionally, in the present embodiment, the storage medium is configured to store program code for executing the following steps:

[0224] S1, acquiring, by a long term evolution, LTE, module of the first terminal, LTE sidelink resource information, wherein the LTE sidelink resource information is used to indicate LTE sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication;

[0225] S2, generating target sidelink control information according to the LTE sidelink resource information, wherein the target sidelink control information includes an indication field used to indicate the LTE sidelink resources;

[0226] S3, sending, by a new radio, NR, module of the first terminal, the generated target sidelink control information to the second terminal.

[0227] Optionally, in the embodiment, the storage medium is configured to store program code for executing the following steps:

[0228] S1, receiving, by the second terminal, target sidelink control information sent by an NR module of the first terminal, wherein the target sidelink control information includes an indication field used to indicate LTE sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication;

[0229] S2, determining the LTE sidelink resources in the shared resource pool according to the received target sidelink control information.

[0230] Optionally, specific examples in the embodiment can refer to the examples described in the above embodiments, and details are not described herein.

[0231] Optionally, in the embodiment, the storage medium can include, but is not limited to, a U disk, a ROM, a RAM, a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0232] According to still another aspect of the embodiments of the present application, an electronic device for implementing the sidelink control information transmission method is also provided, and the electronic device can be a smart device, a server, a terminal or a combination thereof.

[0233] Figure 8 is a structural block diagram of an optional electronic device according to the embodiments of the present application, as shown in Figure 8 , which includes a processor 802, a communication interface 804, a memory 806 and a communication bus 808, wherein the processor 802, the communication interface 804 and the memory 806 complete mutual communication through the communication bus 808, wherein,

[0234] the memory 806 is used to store a computer program;

[0235] Optionally, the processor 802, when executing the computer program stored on the memory 806, implements the following steps:

[0236] S1, obtaining, by a long term evolution, LTE, module of the first terminal, LTE sidelink resource information, wherein the LTE sidelink resource information is used to indicate LTE sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication;

[0237] S2, generating target sidelink control information according to the LTE sidelink resource information, wherein the target sidelink control information includes an indication field used to indicate the LTE sidelink resources;

[0238] S3, sending, by a new radio, NR, module of the first terminal, the generated target sidelink control information to the second terminal.

[0239] Optionally, the processor 802, when executing the computer program stored on the memory 806, also implements the following steps:

[0240] S1, receiving, by the second terminal, target sidelink control information sent by an NR module of the first terminal, wherein the target sidelink control information includes an indication field used to indicate long term evolution, LTE, sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication;

[0241] S2, determining the LTE sidelink resources in the shared resource pool according to the received target sidelink control information.

[0242] Optionally, the communication bus can be a peripheral component interconnect, PCI, bus, or an extended industry standard architecture, EISA, bus, etc. The communication bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, Figure 8 Only one thick line is used in the figure, but it does not mean that there is only one bus or only one type of bus. The communication interface is used for communication between the electronic device and other devices.

[0243] The memory can include a RAM and can also include a non-volatile memory, for example, at least one disk memory. Optionally, the memory can also be at least one storage device located away from the aforementioned processor.

[0244] As an example, the memory 806 can include, but is not limited to, the obtaining unit 602, the generating unit 604, and the sending unit 606 in the transmission apparatus of the sidelink control information described above, and can further include, but is not limited to, the receiving unit 702 and the determining unit 704 in the transmission apparatus of the sidelink control information described above. In addition, other module units in the transmission apparatus of the sidelink control information described above can also be included, which will not be described herein.

[0245] The processor described above can be a general processor, which can include, but is not limited to, a CPU (Central Processing Unit), a NP (Network Processor), and the like; and can also be a DSP (Digital Signal Processing), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component.

[0246] Optionally, the specific examples in the embodiments can refer to the examples described in the above embodiments, which will not be described herein.

[0247] Those skilled in the art can understand that the above-described apparatuses and methods can be implemented by one or more of application specific integrated circuits, computer hardware, computer program products, computer readable storage media, and / or computer readable media. Figure 8 The structure shown is only schematic, and the apparatus for implementing the transmission method of the sidelink control information can be a terminal device, which can be a smart phone (such as an Android phone, an iOS phone, etc.), a tablet computer, a palm computer, a Mobile Internet Device (MID), a PAD, and the like. Figure 8 It does not limit the structure of the electronic device described above. For example, the electronic device can further include more or less components (such as a network interface, a display device, etc.) than those shown in the figure, or have a different configuration from that shown in the figure. Figure 8 For example, the electronic device can further include more or less components (such as a network interface, a display device, etc.) than those shown in the figure, or have a different configuration from that shown in the figure. Figure 8 Figure 8 For example, the electronic device can further include more or less components (such as a network interface, a display device, etc.) than those shown in the figure, or have a different configuration from that shown in the figure.

[0248] Those skilled in the art can understand that all or part of the steps in the various methods of the above embodiments can be completed by programs instructing the related hardware of the terminal device, and the programs can be stored in a computer readable storage medium, which can include a flash disk, a ROM, a RAM, a magnetic disk, an optical disk, and the like.

[0249] The serial numbers of the embodiments of the present application described above are only for description, and do not represent the advantages or disadvantages of the embodiments.

[0250] The integrated units in the above embodiments, if implemented in the form of software function units and sold or used as independent products, can be stored in the above computer-readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the parts that make contributions to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a number of instructions for causing one or more computer devices (which can be personal computers, servers or network devices, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.

[0251] In the above embodiments of the present application, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments.

[0252] In the several embodiments provided in the present application, it should be understood that the disclosed client can be implemented by other means. Among them, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed mutual units can be indirect coupling or communication connection through some interface, unit or module, and can be electrical or other forms.

[0253] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, they can be located in one place or distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the scheme provided in the embodiments.

[0254] In addition, each functional unit in each embodiment of the present application can be integrated in one processing unit, or each unit can exist physically, or at least two units can be integrated in one unit. The above integrated unit can be realized in the form of hardware or software function unit.

[0255] The above is only the preferred embodiment of the present application, and it should be pointed out that for those skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, which should be regarded as the protection scope of the present application.

Claims

1. A method for transmission of sidelink control information, the method comprising: The method comprises: obtaining, by a long term evolution (LTE) module of a first terminal, LTE sidelink resource information, wherein the LTE sidelink resource information is used to indicate LTE sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication; generating target sidelink control information according to the LTE sidelink resource information, wherein the target sidelink control information comprises an indication field used to indicate the LTE sidelink resources; sending, by a new radio (NR) module of the first terminal, the generated target sidelink control information to a second terminal; wherein the indication field used to indicate the LTE sidelink resources comprises a group of information indication fields used to indicate N tuples of reserved LTE sidelink resources, wherein N is a positive integer greater than or equal to 1; the group of information indication fields comprises a resource joint indication field and a reference position indication field, wherein the resource joint indication field is used to indicate frequency domain position information of initial transmission resources and retransmission resources or time domain interval information of initial transmission resources and retransmission resources in each of the N tuples; and the reference position indication field is used to indicate a position of a first resource of a first tuple of the N tuples, wherein the first tuple is a first tuple corresponding to a time domain in the resource joint indication field.

2. The method of claim 1, wherein, The group of information indication fields comprises at least one of: a resource reservation indication field, wherein the resource reservation indication field is used to indicate a reservation period corresponding to each of the N tuples; a specified resource position indication field, wherein the specified resource position indication field is used to indicate a position interval between a first resource of a later tuple and a first resource of an earlier tuple in adjacent tuples of the N tuples; a lowest subchannel index indication field, wherein the lowest subchannel index indication field is used to indicate a lowest subchannel index of the first resource of each of the N tuples.

3. The method of claim 2, wherein: when the group of information indication fields comprises the resource joint indication field and the resource joint indication field is used to indicate at least the frequency domain position information of the initial transmission resources and the retransmission resources in each of the N tuples, a number of bits occupied by the frequency domain position information indicated by the resource joint indication field is set according to a number of subchannels of the LTE sidelink in the resource pool; when the group of information indication fields comprises the resource joint indication field and the resource joint indication field is used to indicate at least the time domain interval information of the initial transmission resources and the retransmission resources in each of the N tuples, a time domain interval corresponding to the time domain interval information indicated by the resource joint indication field is in units of LTE sidelink subframes or in units of NR sidelink slots; when the group of information indication fields comprises the reference position indication field and the position indicated by the reference position indication field is a position of a reference subframe, the reference position indication field is used to indicate a frame index of a frame in which the reference subframe is located and a subframe index of the reference subframe in the frame in which the reference subframe is located, wherein the reference subframe is a subframe in which the 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 to indicate the frame index of the frame in which the reference time slot is located and the time slot index of the reference time slot in the frame in which the reference time slot is located, wherein the reference time slot is the time slot in which the first resource of the first tuple is located; When the set of information indication fields includes a specified resource position indication field, the position interval indicated by the specified resource position indication field is in units of LTE sidelink subframes or in units of NR sidelink time 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 sidelink in the resource pool.

4. The method of claim 2, wherein, The set of information indication fields further includes a priority indication field, wherein the priority indication field is used to indicate the priority of each tuple in the N tuples.

5. The method of claim 1, wherein, The target sidelink control information further includes: a resource type indication field, wherein the resource type indication field is used to indicate whether the resource indicated by the target sidelink control information is a resource for LTE sidelink communication or a resource for NR sidelink communication, and when the resource type indication field indicates that the resource indicated by the target sidelink control information is a resource for LTE sidelink communication, the set of information indication fields is used to indicate N tuples reserved in the LTE sidelink resource; a providing / requesting indication field, wherein when the resource type indication field indicates that the resource indicated by the target sidelink control information is a resource for LTE sidelink communication, the providing / requesting indication field is used to indicate that the target sidelink control information is used to provide the LTE sidelink resource, and when the resource type indication field indicates that the resource indicated by the target sidelink control information is a resource for NR sidelink communication, the providing / requesting indication field is used to indicate that the target sidelink control information is used to provide inter-terminal cooperation information of NR sidelink or to request inter-terminal cooperation information of NR sidelink.

6. The method of claim 1, wherein, The target sidelink control information further includes: a transmission type indication field, wherein the transmission type indication field is used to indicate the transmission type of the target sidelink control information, and the transmission type includes at least one of the following: broadcast, unicast, and groupcast; padding information, wherein the padding information is used to pad the target sidelink control information to a number of bits occupied by the target sidelink control information reaching a preset value when the number of bits occupied by the target sidelink control information is less than the preset value.

7. The method according to any one of claims 1 to 6, characterized in that, The target sidelink control information is second-level sidelink communication information. 8.A method for transmission of sidelink control information, the method comprising: includes: receiving, by a second terminal, target sidelink control information sent by an NR module of a first terminal, wherein the target sidelink control information includes an indication field used to indicate a long term evolution (LTE) sidelink resource in a shared resource pool, and the LTE sidelink resource is a resource for LTE sidelink communication; determine the LTE sidelink resource in the shared resource pool according to the received target sidelink control information; The indication field for indicating the LTE sidelink resource includes a group of information indication fields for indicating N reserved tuples in the LTE sidelink resource, where N is a positive integer greater than or equal to 1; the group of information indication fields includes a resource joint indication field and a reference position indication field, where the resource joint indication field is used to indicate frequency domain position information of initial transmission resources and retransmission resources or time domain interval information of initial transmission resources and retransmission resources in each tuple of the N tuples; and the reference position indication field is used to indicate a position of a first resource of a first tuple of the N tuples, where the first tuple is a first tuple corresponding to a time domain in the resource joint indication field.

9. An apparatus for transmission of sidelink control information, the apparatus comprising: comprise: An acquisition unit, configured to acquire LTE sidelink resource information by a long term evolution (LTE) module of a first terminal, where the LTE sidelink resource information is used to indicate LTE sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication; A generation unit, configured to generate target sidelink control information according to the LTE sidelink resource information, where the target sidelink control information includes an indication field for indicating the LTE sidelink resources; A sending unit, configured to send the generated target sidelink control information to a second terminal by a new radio (NR) module of the first terminal; The indication field for indicating the LTE sidelink resource includes a group of information indication fields for indicating N reserved tuples in the LTE sidelink resource, where N is a positive integer greater than or equal to 1; the group of information indication fields includes a resource joint indication field and a reference position indication field, where the resource joint indication field is used to indicate frequency domain position information of initial transmission resources and retransmission resources or time domain interval information of initial transmission resources and retransmission resources in each tuple of the N tuples; and the reference position indication field is used to indicate a position of a first resource of a first tuple of the N tuples, where the first tuple is a first tuple corresponding to a time domain in the resource joint indication field.

10. An apparatus for transmission of sidelink control information, the apparatus comprising: comprise: A receiving unit, configured to receive target sidelink control information sent by an NR module of a first terminal by a second terminal, where the target sidelink control information includes an indication field for indicating long term evolution (LTE) sidelink resources in a shared resource pool, and the LTE sidelink resources are resources used for LTE sidelink communication; A determination unit, configured to determine the LTE sidelink resource in the shared resource pool according to the received target sidelink control information; and The indication domain for indicating the LTE sidelink resource includes a group of information indication domains for indicating N reserved tuples in the LTE sidelink resource, where N is a positive integer greater than or equal to 1; the group of information indication domains includes a resource joint indication domain and a reference position indication domain; the resource joint indication domain is used for indicating the frequency domain position information of initial transmission resource and retransmission resource or the time domain interval information of initial transmission resource and retransmission resource in each of the N tuples; the reference position indication domain is used for indicating the position of the first resource of the first tuple in the N tuples, where the first tuple is the first tuple corresponding to the time domain in the resource joint indication domain.

11. A computer readable storage medium, characterized in that, The computer readable storage medium includes a stored program, where the program, when executed, performs the method of any one of claims 1-8. 12.An electronic device comprising a memory and a processor, the electronic device characterized by, The memory stores a computer program, and the processor is configured to execute the method of any one of claims 1-8 by using the computer program.

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