WO2023201669A1

WO2023201669A1 - Pscch sending/receiving method and apparatus therefor

Info

Publication number: WO2023201669A1
Application number: PCT/CN2022/088322
Authority: WO
Inventors: 赵群; 赵文素
Original assignee: 北京小米移动软件有限公司
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2023-10-26
Also published as: CN115004820A

Abstract

The embodiments of the present application disclose a PSCCH sending/receiving method and an apparatus therefor. The PSCCH sending/receiving method and the apparatus therefor can be applied in communications systems, and the method comprises: when a terminal device performs sidelink (SL) sending, determining a first physical resource block (PRB) set in a first interlaced resource block (IRB) set occupied by a PSCCH, and sending the PSCCH by means of the first PRB set, the first IRB set comprising one or more first IRBs, and the first PRB set comprising one or more first PRBs; and when the terminal device performs SL receiving, determining the first PRB in the first IRB occupied by the PSCCH, and performing blind detection on the PSCCH at the position of the first PRB. In the embodiments of the present application, when sidelink communication is performed by means of using a shared spectrum, the frequency domain position of the PSCCH can be accurately determined.

Description

A PSCCH sending/receiving method and its device

Technical field

The present application relates to the field of communication technology, and in particular, to a PSCCH sending/receiving method and a device thereof.

Background technique

When terminal equipment and terminal equipment perform sidelink (SL) on unlicensed spectrum (unlicensed spectrum) or shared spectrum (shared spectrum), how to use interlaced resource block (IRB) for physical Sidelink Control Channel (Physical Sidelink Control Channel, PSCCH) transmission has become a problem that needs to be solved.

Contents of the invention

Embodiments of the present application provide a PSCCH sending/receiving method and a device thereof, which can accurately determine the frequency domain position of the PSCCH when using a shared spectrum for sidelink communication.

In the first aspect, embodiments of the present application provide a method for sending PSCCH, which is executed by a terminal device. The method includes:

When the terminal device performs sidelink SL transmission, determine the first physical resource block PRB set within the first interleaved resource block IRB set occupied by the PSCCH, and send the PSCCH through the first PRB set, and the first The IRB set includes one or more first IRBs, and the first PRB set includes one or more first PRBs.

In the embodiment of the present application, when the terminal device performs sidelink SL transmission, it can determine the first physical resource block PRB set within the first interleaved resource block IRB set occupied by the PSCCH, and send the PSCCH through the first PRB set. An IRB set includes one or more first IRBs, and a first PRB set includes one or more first PRBs. When using a shared spectrum for sidelink communication, the frequency domain location of the PSCCH can be accurately determined.

In the second aspect, embodiments of the present application provide a method for receiving PSCCH, which is executed by a terminal device. The method includes:

When the terminal device performs SL reception, the first PRB set within the first IRB set occupied by the PSCCH is determined. The first IRB set includes one or more first IRBs, and the first PRB set includes one or more first IRBs. One PRB; performing blind detection on the PSCCH at the frequency domain position of the first PRB.

In the embodiment of the present application, when the terminal device performs SL reception, the first PRB set within the first IRB set occupied by the PSCCH is determined. The first IRB set includes one or more first IRBs. The first PRB set includes one or more first IRBs. a first PRB, and blindly detects the PSCCH at the frequency domain position of the first PRB. When using shared spectrum for sidelink communication, the frequency domain location of the PSCCH can be accurately determined.

In a third aspect, embodiments of the present application provide a communication device that has some or all of the functions of the terminal device in implementing the method described in the first aspect. For example, the functions of the communication device may have some or all of the functions in this application. The functions in the embodiments may also be used to independently implement any of the embodiments in this application. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the structure of the communication device may include a transceiver module and a processing module, and the processing module is configured to support the communication device to perform corresponding functions in the above method. The transceiver module is used to support communication between the communication device and other devices. The communication device may further include a storage module coupled to the transceiver module and the processing module, which stores necessary computer programs and data for the communication device.

As an example, the processing module may be a processor, the transceiver module may be a transceiver or a communication interface, and the storage module may be a memory.

In the fourth aspect, embodiments of the present application provide another communication device that has some or all of the functions of the network device in the method example described in the second aspect. For example, the functions of the communication device may have some of the functions in this application. Or the functions in all embodiments may also be used to implement any one embodiment of the present application independently. The functions described can be implemented by hardware, or can be implemented by hardware executing corresponding software. The hardware or software includes one or more units or modules corresponding to the above functions.

In a fifth aspect, embodiments of the present application provide a communication device. The communication device includes a processor. When the processor calls a computer program in a memory, it executes the method described in the first aspect.

In a sixth aspect, embodiments of the present application provide a communication device. The communication device includes a processor. When the processor calls a computer program in a memory, it executes the method described in the second aspect.

In a seventh aspect, embodiments of the present application provide a communication device. The communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device executes The method described in the first aspect above.

In an eighth aspect, embodiments of the present application provide a communication device. The communication device includes a processor and a memory, and a computer program is stored in the memory; the processor executes the computer program stored in the memory, so that the communication device executes The method described in the second aspect above.

In a ninth aspect, embodiments of the present application provide a communication device. The device includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the code instructions to cause the The device performs the method described in the first aspect.

In a tenth aspect, embodiments of the present application provide a communication device. The device includes a processor and an interface circuit. The interface circuit is used to receive code instructions and transmit them to the processor. The processor is used to run the code instructions to cause the The device performs the method described in the second aspect above.

In an eleventh aspect, embodiments of the present application provide a communication system for PDCCH transmission. The system includes the communication device described in the third aspect and the communication device described in the fourth aspect, or the system includes the communication device described in the fifth aspect. The communication device and the communication device according to the sixth aspect, or the system includes the communication device according to the seventh aspect and the communication device according to the eighth aspect, or the system includes the communication device according to the ninth aspect and the communication device according to the ninth aspect. The communication device according to the tenth aspect.

In a twelfth aspect, embodiments of the present invention provide a computer-readable storage medium for storing instructions used by the above-mentioned terminal equipment. When the instructions are executed, the terminal equipment is caused to execute the above-mentioned first aspect. method.

In a thirteenth aspect, embodiments of the present invention provide a readable storage medium for storing instructions used by the above-mentioned network device. When the instructions are executed, the network device is caused to perform the method described in the second aspect. .

In a fourteenth aspect, the present application also provides a computer program product including a computer program, which when run on a computer causes the computer to execute the method described in the first aspect.

In a fifteenth aspect, the present application also provides a computer program product including a computer program, which when run on a computer causes the computer to execute the method described in the second aspect.

In a sixteenth aspect, the present application provides a chip system, which includes at least one processor and an interface for supporting the terminal device to implement the functions involved in the first aspect, for example, determining or processing the data involved in the above method. and information. In a possible design, the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the terminal device. The chip system may be composed of chips, or may include chips and other discrete devices.

In a seventeenth aspect, this application provides a chip system, which includes at least one processor and an interface for supporting network equipment to implement the functions involved in the second aspect, for example, determining or processing the data involved in the above method. and information. In a possible design, the chip system further includes a memory, and the memory is used to store necessary computer programs and data for the network device. The chip system may be composed of chips, or may include chips and other discrete devices.

In an eighteenth aspect, the present application provides a computer program that, when run on a computer, causes the computer to execute the method described in the first aspect.

In a nineteenth aspect, this application provides a computer program that, when run on a computer, causes the computer to execute the method described in the second aspect.

Description of the drawings

In order to more clearly explain the technical solutions in the embodiments of the present application or the background technology, the drawings required to be used in the embodiments or the background technology of the present application will be described below.

Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application;

Figure 2 is a schematic flowchart of a PSCCH sending method provided by an embodiment of the present application;

Figure 3 is a schematic flowchart of a PSCCH sending method provided by an embodiment of the present application;

Figure 4 is a schematic flowchart of a PSCCH sending method provided by an embodiment of the present application;

Figure 5 is a schematic flowchart of a PSCCH sending method provided by an embodiment of the present application;

Figure 6 is a schematic flowchart of a PSCCH sending method provided by an embodiment of the present application;

Figure 7 is a schematic flowchart of a PSCCH receiving method provided by an embodiment of the present application;

Figure 8 is a schematic flowchart of a PSCCH receiving method provided by an embodiment of the present application;

Figure 9 is a schematic flowchart of a PSCCH receiving method provided by an embodiment of the present application;

Figure 10 is a schematic flowchart of a PSCCH receiving method provided by an embodiment of the present application;

Figure 11 is a schematic flow chart of a PSCCH receiving method provided by an embodiment of the present application;

Figure 12 is a schematic diagram for determining the frequency domain position of PSCCH provided by an embodiment of the present application;

Figure 13 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 14 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 15 is a schematic structural diagram of a chip provided by an embodiment of the present application.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with aspects of the disclosure as detailed in the appended claims.

The terminology used in the embodiments of the present disclosure is for the purpose of describing specific embodiments only and is not intended to limit the embodiments of the present disclosure. As used in the presently disclosed embodiments and the appended claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the term "and/or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

It should be understood that although the terms first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other. For example, without departing from the scope of the embodiments of the present disclosure, the first information may also be called second information, and similarly, the second information may also be called first information. Depending on the context, the word "if" as used herein may be interpreted as "when" or "when" or "in response to determining"

For the purpose of simplicity and ease of understanding, the terms used in this article are "greater than" or "less than", "higher than" or "lower than" when characterizing size relationships. But for those skilled in the art, it can be understood that: the term "greater than" also covers the meaning of "greater than or equal to", and "less than" also covers the meaning of "less than or equal to"; the term "higher than" covers the meaning of "higher than or equal to". "The meaning of "less than" also covers the meaning of "less than or equal to".

To facilitate understanding, the terminology involved in this application is first introduced.

Terminal devices communicate with each other through sidelinks. Among them, sidelink includes Physical Sidelink Control Channel (PSCCH) and Physical Sidelink Share Channel (PSSCH). The sidelink control information (SCI) in PSCCH can indicate the information required to receive PSSCH, such as PSSCH channel resources and transmission parameters. PSSCH is used to carry data for sidelink communication.

Physical Resource Block (PRB) is used to describe the allocation of actual physical resources.

Interlaced Resource Block (IRB) refers to a fixed number of resource blocks between two consecutive interlaced resource blocks in the same interlaced resource block index. For example, if two interleaved resource blocks are separated by M resource blocks, then the IRB with index index m includes Physical Resource Blocks (PRB) as {m, m+M, 2M+m, 3M +m,…}, where m∈{0, 1,…, M-1}. In the new radio unlicensed (NR-U) system, the IRB structure is defined for the two sub-carrier spaces (SCS) of 15kHz and 30kHz. 15kHz, M=10, there are 10 IRB indexes. 30kHz M=5, there are 5 IRB indexes. In other words, when SCS=30khz, M=5, there are 5 comb indexes in total. For the first IRB index, that is, the IRB index is 0, and the PRB corresponding to the interleaved resource block contained in the interleaved index is {0 ,5,10,15,20,25,30,35,40,45}.

In order to better understand the PSCCH sending/receiving method disclosed in the embodiment of the present application, the communication system to which the embodiment of the present application is applicable is first described below.

Please refer to Figure 1. Figure 1 is a schematic architectural diagram of a communication system provided by an embodiment of the present application. The communication system may include but is not limited to one network device and one terminal device. The number and form of devices shown in Figure 1 are only for examples and do not constitute a limitation on the embodiments of the present application. In actual applications, two or more devices may be included. Network equipment, two or more terminal devices. The communication system shown in Figure 1 includes a network device 101 and a terminal device 102 as an example.

It should be noted that the technical solutions of the embodiments of the present application can be applied to various communication systems. For example: long term evolution (LTE) system, fifth generation (5th generation, 5G) mobile communication system, 5G new radio (NR) system, or other future new mobile communication systems. It should also be noted that the side link in the embodiment of the present application may also be called a side link or a through link.

The network device 101 in the embodiment of this application is an entity on the network side that is used to transmit or receive signals. For example, the network device 101 can be an evolved base station (evolved NodeB, eNB), a transmission point (transmission reception point, TRP), a next generation base station (next generation NodeB, gNB) in an NR system, or other base stations in future mobile communication systems. Or access nodes in wireless fidelity (WiFi) systems, etc. The embodiments of this application do not limit the specific technology and specific equipment form used by the network equipment. The network equipment provided by the embodiments of this application may be composed of a centralized unit (central unit, CU) and a distributed unit (DU). The CU may also be called a control unit (control unit). CU-DU is used. The structure can separate the protocol layers of network equipment, such as base stations, and place some protocol layer functions under centralized control on the CU. The remaining part or all protocol layer functions are distributed in the DU, and the CU centrally controls the DU.

The terminal device 102 in the embodiment of this application is an entity on the user side that is used to receive or transmit signals, such as a mobile phone. Terminal equipment can also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal equipment (mobile terminal, MT), etc. The terminal device can be a car with communication functions, a smart car, a mobile phone, a wearable device, a tablet computer (Pad), a computer with wireless transceiver functions, a virtual reality (VR) terminal device, an augmented reality ( augmented reality (AR) terminal equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical surgery, smart grid ( Wireless terminal equipment in smart grid, wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, wireless terminal equipment in smart home, etc. The embodiments of this application do not limit the specific technology and specific equipment form used by the terminal equipment.

In side-link communication, there are 4 side-link transmission modes. Side link transmission mode 1 and side link transmission mode 2 are used for terminal device direct (device-to-device, D2D) communication. Side-link transmission mode 3 and side-link transmission mode 4 are used for V2X communications. When side-link transmission mode 3 is adopted, resource allocation is scheduled by the network device 101. Specifically, the network device 101 can send resource allocation information to the terminal device 102, and then the terminal device 102 allocates resources to another terminal device, so that the other terminal device can send information to the network device 101 through the allocated resources. . In V2X communication, a terminal device with better signal or higher reliability can be used as the terminal device 102 . The first terminal device mentioned in the embodiment of this application may refer to the terminal device 102, and the second terminal device may refer to the other terminal device.

It can be understood that the communication system described in the embodiments of the present application is to more clearly illustrate the technical solutions of the embodiments of the present application, and does not constitute a limitation on the technical solutions provided by the embodiments of the present application. As those of ordinary skill in the art will know, With the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

A PSCCH transmission/reception method and device provided by this application will be introduced in detail below with reference to the accompanying drawings.

Please refer to Figure 2. Figure 2 is a schematic flowchart of a PSCCH sending method provided by an embodiment of the present application. The method is executed by the terminal device, as shown in Figure 2. The method may include but is not limited to the following steps:

S21: When the terminal device performs sidelink SL transmission, determine the first set of physical resource blocks PRB within the first set of interleaved resources IRB occupied by the PSCCH.

The first IRB set includes one or more first IRBs, and the first PRB set includes one or more first PRBs.

Optionally, the terminal device can perform sidelink (SL) communication on the unlicensed spectrum (unlicensed spectrum) or shared spectrum (shared spectrum).

In this embodiment of the present application, the terminal device may obtain a sidelink resource pool configured for PSCCH and/or PSSCH, where the sidelink resource pool includes one or more IRBs.

The terminal device may determine one or more first IRBs occupied by the PSCCH from the IRBs included in the sidelink resource pool, where the one or more first IRBs occupied by the PSCCH form a first TRB set.

Optionally, when the sidelink resource pool corresponding to the PSCCH and/or PSSCH includes one or more subchannels, in the second IRB included in the subchannel, the second IRB frequency domain position and/or IRB index can be number, and determine one or more first IRBs occupied by the PSCCH, where the first IRB set includes the first IRBs occupied by the PSCCH.

Optionally, when the sidelink resource pool corresponding to the PSCCH and/or PSSCH contains frequency resources in one or more resource block sets (Resource block Set, RB), the first frequency resource included in the one or more resource block sets is selected. Among the three IRBs, one or more first IRBs occupied by the PSCCH are determined according to the frequency domain position of the third IRB and/or the IRB index number, where the first IRB set includes the first IRB occupied by the PSCCH.

Each IRB includes one or more PRBs, and the first PRB set occupied by the PSCCH may be determined from the PRBs included in the one or more first IRBs occupied by the PSCCH. The first PRB set includes one or more PRBs occupied by PSCCH, where one or more PRBs occupied by PSCCH may belong to one first IRB or different first IRBs. Optionally, one or more first PRBs may be selected from the first IRB based on the number of first PRBs that the PSCCH needs to occupy, based on the frequency domain position of the PRB included in each IRB or the index number of the PRB.

S22: Send the PSCCH through the first PRB set.

After the first PRB set is determined, the PSCCH may be transmitted through one or more first PRBs included in the first PRB set. That is to say, the sidelink control information (SCI) in the PSCCH is sent on the first PRB, and the SCI is used to indicate the information required to receive the PSSCH, such as PSSCH channel resources and transmission parameters. PSSCH is used to carry data for sidelink communication.

Please refer to Figure 3. Figure 3 is a schematic flowchart of a PSCCH sending method provided by an embodiment of the present application. The method is executed by the terminal device, as shown in Figure 3. The method may include but is not limited to the following steps:

S31: The terminal device performs SL transmission and determines the number K of first IRBs included in the first IRB set.

It should be noted that SL transmission includes PSCCH and/or PSSCH transmission. PSCCH and/or PSSCH transmission needs to occupy one or more IRBs. The IRB occupied by PSCCH and/or PSSCH transmission can be determined as the first IRB.

Among them, K is a positive integer.

As a possible implementation manner, the number N of first PRBs that the PSCCH needs to occupy can be determined, and the number M of PRBs contained in one IRB can be determined, and K can be determined based on N and M, where N and M are positive integers. Optionally, K=ceil(N/M), that is, N/M is rounded up to obtain the number K of the first IRB. is the number of PRBs contained in 1 IRB. For example, the number of first PRBs occupied by PSCCH is 15, that is, N=15, and one IRB contains 10 PRBs, that is, M=10, then PSCCH needs to occupy 2 frequency resources in the first IRB, that is, K= 2.

It should be noted that the number N of first PRBs that the PSCCH needs to occupy can be determined based on the protocol agreement; or, the number N of the first PRBs that the PSCCH needs to occupy can be determined based on preconfiguration; or, the number of first PRBs that the PSCCH needs to occupy can be determined based on the preconfiguration. The number N can receive configurations or instructions for downlink control signaling of network devices.

It should be noted that the number M of PRBs contained in an IRB can be determined based on the protocol agreement; or, the number M of PRBs contained in an IRB can be determined based on pre-configuration; or, the number M of PRBs contained in an IRB can be determined by the network Configuration or indication of device downlink control signaling.

As another possible implementation, the sidelink resource pool includes sub-channels, the number L of second IRBs included in the sub-channel can be determined, and K is determined based on L, where L is a positive integer greater than or equal to 1. . Alternatively, it may be determined that the number K of first IRBs is equal to the number L of second IRBs included in the sub-channel.

It should be noted that the number L of the second IRB can be determined based on the protocol agreement; or the number L of the second IRB can be determined based on the preconfiguration; or the number L of the second IRB can receive the configuration of the downlink control signaling of the network device. or instructions.

This application does not limit the determination process of N, M and L, and can be selected according to the actual situation.

S32: Determine K first IRBs among the IRBs included in the side row resource pool.

In this embodiment of the present application, the terminal device may obtain a sidelink resource pool configured for PSCCH and/or PSSCH, where the sidelink resource pool includes one or more IRBs. Optionally, the terminal device may determine one or more first IRBs occupied by the PSCCH from the IRBs included in the sidelink resource pool, where the one or more first IRBs occupied by the PSCCH form a first TRB set.

The terminal device may determine one or more first IRBs occupied by the PSCCH from the IRBs included in the sidelink resource pool, where the K first IRBs occupied by the PSCCH form a first TRB set.

Optionally, when the sidelink resource pool corresponding to the PSCCH and/or PSSCH includes one or more subchannels, in the second IRB included in the subchannel, the second IRB frequency domain position and/or IRB index can be number to determine the K first IRBs occupied by the PSCCH.

Optionally, when the sidelink resource pool corresponding to the PSCCH and/or PSSCH contains frequency resources in one or more resource block sets (Resource block Set, RB), the first frequency resource included in the one or more resource block sets is selected. Among the three IRBs, the K first IRBs occupied by the PSCCH are determined according to the frequency domain position of the third IRB and/or the IRB index number.

Based on the above method, the frequency domain positions of the K first IRBs can be determined from the IRBs included in the side row resource pool.

Each IRB includes one or more PRBs, and the set of first PRBs occupied by the PSCCH can be determined from the PRBs included in the K first IRBs occupied by the PSCCH. The first PRB set includes one or more PRBs occupied by PSCCH, where one or more PRBs occupied by PSCCH may belong to one first IRB or different first IRBs. Optionally, one or more first PRBs may be selected from the first IRB based on the number of first PRBs that the PSCCH needs to occupy, the frequency domain position of the candidate PRB or the index number of the candidate PRB.

S33. Send the PSCCH through the first PRB set.

Regarding the specific implementation of step S33, any possible implementation in any embodiment of the present application can be adopted, and details will not be described again here. In the embodiment of the present application, the terminal device performs SL transmission, and determines the frequency domain position of the first IRB in the IRB corresponding to the PSCCH/PSSCH, and/or the number K of first IRBs included in the first IRB set, by The first PRB set sends the PSCCH, and when using the shared spectrum for sidelink communication, the frequency domain position of the PSCCH can be accurately determined.

Please refer to Figure 4. Figure 4 is a schematic flowchart of a PSCCH sending method provided by an embodiment of the present application. The method is executed by the terminal device, as shown in Figure 4. The method may include but is not limited to the following steps:

S41: The terminal device performs sidelink SL transmission.

Optionally, the terminal device can perform sidelink (SL) communication on the unlicensed spectrum (unlicensed spectrum) or shared spectrum (shared spectrum). It should be noted that SL transmission includes PSCCH and/or PSSCH transmission.

S42. The sidelink resource pool of PSCCH and/or PSSCH includes one or more sub-channels, and determines the first sub-channel with the lowest or highest position in the frequency domain.

Determine a sidelink resource pool configured for PSCCH and/or PSSCH transmission, and the sidelink resource pool includes one or more IRBs. Optionally, when the sidelink resource pool includes one or more subchannels, the subchannel with the lowest frequency domain position or the highest frequency domain position in the sidelink resource pool may be determined as the first subchannel.

S43: Select K first IRBs in the first sub-channel according to the set order.

It should be noted that this application does not limit the specific method of selecting the K first IRBs in the first sub-channel according to the set order, and the selection can be made according to the actual situation.

Optionally, within the first sub-channel, starting from the IRB with the lowest frequency domain position, the K first IRBs can be selected in order from low to high frequency domain position; Starting from the IRB with the highest domain position, the K first IRBs are selected in order from high to low frequency domain position.

It should be noted that the IRB with the lowest frequency domain position refers to the frequency domain position of the PRB with the lowest frequency domain position in the PRB set included in the IRB. The IRB with the highest frequency domain position refers to the frequency domain position of the PRB with the highest frequency domain position in the PRB set included in the IRB.

Optionally, the K first IRBs can be selected from the IRB with the smallest IRB index in the first sub-channel in order from small to large; optionally, the IRB with the largest IRB index can be selected in the first sub-channel. Start by selecting the K first IRBs in order from large to small index.

Each IRB includes one or more PRBs, and the first PRB set occupied by the PSCCH may be determined from the PRBs included in the one or more first IRBs occupied by the PSCCH. The first PRB set includes one or more PRBs occupied by PSCCH, where one or more PRBs occupied by PSCCH may belong to one first IRB or different first IRBs. Optionally, one or more first PRBs may be selected from the first IRB based on the number of first PRBs that the PSCCH needs to occupy, the frequency domain position of the candidate PRB or the index number of the candidate PRB.

S44: Send the PSCCH through the first PRB set.

Regarding the specific implementation of step S44, any possible implementation in any embodiment of the present application may be adopted, and details will not be described again here. In this embodiment of the present application, the terminal equipment performs sidelink SL transmission, determines that the sidelink resource pool of PSCCH/PSSCH includes one or more subchannels, and selects the first subchannel with the lowest or highest frequency position. K first IRBs are selected in the sub-channel according to the set order, and the PSCCH is sent through the first PRB set. When using shared spectrum for sidelink communication, the frequency domain location of the PSCCH can be accurately determined.

Please refer to Figure 5. Figure 5 is a schematic flowchart of a PSCCH sending method provided by an embodiment of the present application. The method is executed by the terminal device, as shown in Figure 5. The method may include but is not limited to the following steps:

S51: The terminal device performs side link SL transmission.

For the specific introduction of step S51, please refer to the relevant content records in the above embodiments, and will not be described again here.

S52: The sidelink resource pool of PSCCH and/or PSSCH contains frequency domain resources in one or more resource block sets, and determines the first resource block set from one or more resource block sets.

It should be noted that the specific method of determining the first resource block set is not limited in this application and can be selected according to actual conditions.

Optionally, the first resource block set may be determined through preconfiguration or network device indication; Optionally, the first resource block set may be determined based on the priority by determining the priority of one or more resource block sets; Optionally, the first resource block set may be determined based on the priority; , the first resource block set may be determined according to the frequency domain starting position of one or more resource block sets.

S53: Select K first IRBs from the first resource block set.

Optionally, starting from the IRB with the lowest frequency domain starting position in the first resource block set, K first IRBs can be selected in order from low to high frequency domain starting position; Starting from the IRB with the highest frequency domain starting position in the resource block set, the K first IRBs are selected in order from high to low frequency domain starting position.

Optionally, the K first IRBs can be selected from the IRB with the smallest IRB index in the first resource block set in order from small to large; optionally, the K first IRBs can be selected from the IRB with the largest index in the first resource block set. Starting from the IRB, select the K first IRBs in order from large to small index.

Further, when the number of the first resource block sets is two or more, IRB selection can be performed in the two or more first resource block sets according to the selection order of the first resource block sets until Select K first IRBs.

Understandably, the resource block set is a frequency domain resource within a Listen Before Talk (LTB) subband.

When the sidelink resource pool contains the first set of resource blocks in a 20MHz subband, K IRBs are selected according to the starting position of the IRB in the frequency domain or the size of the IRB index.

When the sidelink resource pool contains more than one first resource block set in a 20MHz subband, first select one of the 20MHz subbands, and then select the first IRB in the first resource set in this subband; if this If the number of first IRBs selected from the first resource set in the subband is less than K, then the first IRB is selected from the first resource set included in another 20MHz subband, and this cycle continues until the Kth One IRB.

Optionally, the selection instructions of multiple 20 MHz subbands are determined by preconfiguring or receiving downlink control signaling sent by the network device.

For example, the network device configures the priorities of multiple 20MHz subbands, and the 20MHz subband with the highest priority is selected for use. If the number of first IRBs selected does not reach K, the 20MHz subband with the highest priority is selected for use.

For another example, the network device configures one or a group of 20MHz subbands, and preferentially selects the subbands in this or this group of subbands for use.

Optionally, the 20 MHz subbands are selected according to the starting position in the frequency domain, for example, the 20 MHz subband with the lowest starting position in the frequency domain is preferably selected.

S54: Send the PSCCH through the first PRB set.

Regarding the specific implementation manner of step S54, any possible implementation manner in any embodiment of the present application can be adopted, and details will not be described again here. In this embodiment of the present application, the terminal device performs SL transmission, determines that the sidelink resource pool of PSCCH/PSSCH contains frequency domain resources in one or more resource block sets, and determines the first resource from one or more resource block sets. block set, select K first IRBs in the first resource block set, and send the PSCCH through the first PRB set. When using the shared spectrum for sidelink communication, the frequency domain position of the PSCCH can be accurately determined.

Please refer to Figure 6. Figure 6 is a schematic flowchart of a PSCCH sending method provided by an embodiment of the present application. The method is executed by the terminal device, as shown in Figure 6. The method may include but is not limited to the following steps:

S61: The terminal device performs sidelink SL transmission.

S62: Determine the number K of first IRBs included in the first IRB set.

S63: Determine the frequency domain positions of the K first IRBs from the sidelink resource pool of the PSCCH and/or PSSCH.

For the specific introduction of steps S61 to S63, please refer to the relevant content records in the above embodiments, and will not be described again here.

S64: Determine the first PRB set occupied by the PSCCH from the K first IRBs.

The first PRB set includes N first PRBs, where N is the number of first PRBs that the PSCCH needs to occupy.

As a possible implementation manner, among the K first IRBs, the first PRBs may be selected in order from low to high or from high to low according to the frequency domain positions of the PRBs.

As another possible implementation manner, determine all PRBs on the K first IRBs as the first PRB set.

It should be noted that, when all PRBs on the K first IRBs are determined to be first PRBs, the number of first PRBs that the PSCCH needs to occupy is a positive integer multiple of the number of PRBs included in one IRB.

Further, when K=1, N PRBs on the first IRB are selected as the first PRBs according to the frequency domain positions of the PRBs on the first IRB, and N is the number of first PRBs that the PSCCH needs to occupy.

As another possible implementation manner, some PRBs on the first IRB are determined to be the first PRB set.

Optionally, when K is greater than 1, the K first IRBs are sorted, and the first PRBs are selected from the K first IRBs according to the sorting until the N first PRBs that need to be occupied by the PSCCH are selected.

In some implementations, the K first IRBs may be sorted according to the frequency domain position of the first IRB or the index of the first IRB. For example, the K first IRBs may be sorted from high to low or from low to high according to the frequency domain position of the first IRB. For another example, the K first IRBs can be sorted according to the index of the first IRB from large to small or from small to large.

Further, the K first IRBs can be traversed according to sorting. For the first IRB currently traversed, the first PRB is selected according to the frequency domain position of the PRB included in the first IRB until the K first IRBs are selected. The traversal of the N first PRBs that need to be occupied by PSCCH ends. For example, corresponding to the first IPRB currently traversed, the first PRB may be selected in order from low to high or from high to low according to the frequency domain positions of the PRBs.

Optionally, when K is greater than 1, the first PRB may be selected according to the frequency domain position of the PRB among the K first IRBs until N first PRBs are selected. It should be noted that among the K first IRBs, the first PRBs may be selected in order from low to high or from high to low according to the frequency domain positions of the PRBs.

S65: Send the PSCCH through the first PRB set.

Regarding the specific implementation of step S65, any possible implementation in any embodiment of the present application can be adopted, and will not be described again here.

In this embodiment of the present application, the terminal equipment performs sidelink SL transmission, and determines the frequency domain position of the first IRB among the candidate IRBs occupied by the PSCCH/PSSCH, and/or the first IRB included in the first IRB set. The number K is used to determine the first PRB set occupied by the PSCCH from the K first IRBs. When using shared spectrum for sidelink communication, the frequency domain location of the PSCCH can be accurately determined.

Please refer to Figure 7, which is a schematic flowchart of a PSCCH receiving method provided by an embodiment of the present application. The method is executed by the terminal device, as shown in Figure 7. The method may include but is not limited to the following steps:

S71. When the terminal device performs SL reception, determine the first PRB set within the first IRB set occupied by the PSCCH.

S72: Perform blind detection on the PSCCH at the frequency domain position of the first PRB.

In the embodiment of the present application, when the terminal device performs SL reception, the first PRB set within the first IRB set occupied by the PSCCH is determined. The first IRB set includes one or more first IRBs. The first PRB set includes one or more first IRBs. a first PRB, and blindly detects the PSCCH at the frequency domain position of the first PRB. When using the shared spectrum for sidelink communication, the frequency domain position of the PSCCH can be accurately determined so that the PSCCH can be accurately received.

Please refer to Figure 8. Figure 8 is a schematic flowchart of a PSCCH receiving method provided by an embodiment of the present application. The method is executed by the terminal device, as shown in Figure 8. The method may include but is not limited to the following steps:

S81: The terminal device performs SL reception, and the number of first IRBs included in the first IRB set is K.

S82: Determine K first IRBs among the IRBs included in the side row resource pool.

For the specific introduction of steps S81 to S82, please refer to the relevant content records in the above embodiments, and will not be described again here.

S83: Perform blind detection on the PSCCH at the frequency domain position of the first PRB.

For a specific introduction to step S83, please refer to the relevant content records in the above embodiments, and will not be described again here.

In the embodiment of the present application, when the terminal equipment performs SL reception, the frequency domain position of the first IRB and the number K of the first IRBs included in the first IRB set are determined, and the PSCCH is blinded at the frequency domain position of the first PRB. Check. When using the shared spectrum for sidelink communication, the frequency domain position of the PSCCH can be accurately determined so that the PSCCH can be accurately received.

Please refer to Figure 9. Figure 9 is a schematic flowchart of a PSCCH receiving method provided by an embodiment of the present application. The method is executed by the terminal device, as shown in Figure 9. The method may include but is not limited to the following steps:

S91, the terminal device performs SL reception.

For the specific introduction of step S91, please refer to the relevant content records in the above embodiments, and will not be described again here.

S92: The sidelink resource pool of PSCCH and/or PSSCH includes one or more subchannels, and determines the first subchannel with the lowest or highest position in the frequency domain.

S93: Select K first IRBs in the first sub-channel according to the set order.

For the specific introduction of steps S91 to S93, please refer to the relevant content records in the above embodiments, and will not be described again here.

S94: Perform blind detection on the PSCCH at the frequency domain position of the first PRB.

For a specific introduction to step S94, please refer to the relevant content records in the above embodiments, and will not be described again here.

In this embodiment of the present application, the terminal equipment performs SL reception, determines that the sidelink resource pool of PSCCH/PSSCH includes one or more sub-channels, selects the first sub-channel with the lowest or highest position in the frequency domain, and selects the first sub-channel according to the Set the order to select K first IRBs, and perform blind detection on the PSCCH at the frequency domain position of the first PRB. When using the shared spectrum for sidelink communication, the frequency domain position of the PSCCH can be accurately determined so that the PSCCH can be accurately received.

Please refer to Figure 10. Figure 10 is a schematic flowchart of a PSCCH receiving method provided by an embodiment of the present application. The method is executed by the terminal device, as shown in Figure 10. The method may include but is not limited to the following steps:

S101, the terminal device performs SL reception.

S102: The sidelink resource pool of PSCCH and/or PSSCH contains frequency domain resources in one or more resource block sets, and determines the first resource block set from one or more resource block sets.

S103: Select K first IRBs from the first resource block set.

For the specific introduction of steps S101 to 103, please refer to the relevant content records in the above embodiments, and will not be described again here.

S104: Perform blind detection on the PSCCH at the frequency domain position of the first PRB.

For a specific introduction to step S104, please refer to the relevant content records in the above embodiments, and will not be described again here.

In this embodiment of the present application, the terminal equipment performs SL reception, the sidelink resource pool of PSCCH/PSSCH contains frequency domain resources in one or more resource block sets, and the first resource block is determined from one or more resource block sets. Set, select K first IRBs in the first resource block set, and perform blind detection on the PSCCH at the frequency domain position of the first PRB. When using the shared spectrum for sidelink communication, the frequency domain position of the PSCCH can be accurately determined so that the PSCCH can be accurately received.

Please refer to Figure 11, which is a schematic flowchart of a PSCCH receiving method provided by an embodiment of the present application. The method is executed by the terminal device, as shown in Figure 11. The method may include but is not limited to the following steps:

S111, the terminal device performs SL reception.

S112. Determine the frequency domain position of the first IRB and the number K of first IRBs included in the first IRB set.

S113: Determine the first PRB set occupied by the PSCCH from the K first IRBs.

S114: Perform blind detection on the PSCCH at the frequency domain position of the first PRB.

For the specific introduction of steps S111 to S114, please refer to the relevant content records in the above embodiments, and will not be described again here.

In the embodiment of the present application, the terminal equipment performs SL reception, and determines the frequency domain position of the first IRB in the IRB corresponding to the PSCCH/PSSCH, and/or the number K of first IRBs included in the first IRB set, from K The first PRB set occupied by the PSCCH is determined from the K first IRBs, and the first PRB set occupied by the PSCCH is determined from the K first IRBs. When using shared spectrum for sidelink communication, the frequency domain location of the PSCCH can be accurately determined.

For example, as shown in Figure 12, assuming 15KHz SCS, there are 10 IRBs in the 20MHz subband, the IRB index is 0-9, each IRB has 10 PRBs, and a sideline resource pool contains these 10 IRBs. There are 8 IRBs with IRB index 0-7. Each two IRBs are a subchannel, namely IRB index{0,1}, IRB index{2,3}, IRB index{4,5} and IRB index{6,7 }Each is a subchannel.

The following explanation takes a PSCCH configured to occupy 12 PRBs in the frequency domain as an example.

Optionally, for subchannel-0, the PRBs that PSCCH may occupy are the 10 PRBs of IRB index0 plus the 2 PRBs with the lowest frequency position of IRB index1. If a UE uses subchannel-0 and subchannel-1 to send PSCCH/PSSCH, PSCCH occupies the time-frequency resources in subchannel-0, that is, it occupies the 10 PRBs of index0 plus the two PRBs with the lowest frequency position of IRB index1.

Optionally, for subchannel0, the PRBs that PSCCH may occupy are the 12 PRBs with the lowest frequency positions among the 20 PRBs of IRBindex0 and IRBindex1, that is, the 6 PRBs with the lowest frequency positions of IRB index0, and the 6 PRBs with the lowest frequency positions of IRB index1 PRBs, if a UE uses subchannel-0 and subchannel-1 to send PSCCH/PSSCH, PSCCH occupies the time-frequency resources in subchannel-0, that is, occupies 6 PRBs at the lowest frequency position of index0 plus IRB at the lowest frequency position of index1 6 PRBs.

In the above embodiments provided by the present application, the methods provided by the embodiments of the present application are introduced from the perspectives of network equipment and terminal equipment respectively. In order to implement each function in the method provided by the above embodiments of the present application, network equipment and terminal equipment may include hardware structures and software modules to implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules. Certain functions among the above functions can be executed in the form of hardware structure, software module, or hardware structure plus software module.

Please refer to FIG. 13 , which is a schematic structural diagram of a communication device 130 provided by an embodiment of the present application. The communication device 130 shown in FIG. 13 may include a transceiver module 131 and a processing module 132. The transceiving module 131 may include a sending module and/or a receiving module. The sending module is used to implement the sending function, and the receiving module is used to implement the receiving function. The transceiving module 131 may implement the sending function and/or the receiving function.

The communication device 130 may be a terminal device, a device in the terminal device, or a device that can be used in conjunction with the terminal device.

The communication device 130 is a terminal device:

The transceiver module 131 is configured to send the PSCCH through the first PRB set, the first IRB set includes one or more first IRBs, and the first PRB set includes one or more first PRBs;

The processing module 132 is configured to determine the first set of physical resource blocks PRB within the first set of interleaved resource blocks IRB occupied by the PSCCH when the terminal device performs sidelink SL transmission.

Optionally, the processing module 132 is also configured to determine the frequency domain location of the first IRB among the IRBs included in the sidelink resource pool of the PSCCH and/or the physical sidelink shared channel PSSCH, where the SL sends Including the PSCCH and/or PSSCH transmission.

Optionally, the processing module 132 is also configured to determine the number K of the first IRBs included in the first IRB set, where K is a positive integer.

Optionally, the processing module 132 is also configured to determine the number N of first PRBs that the PSCCH needs to occupy; determine the number M of PRBs contained in one IRB; and determine the K based on the N and the M, where , the N and M are positive integers.

Optionally, the processing module 132 is also configured to determine the number L of second IRBs included in the sub-channel in the sidelink resource pool, and determine the K based on the L, where the L is a positive integer.

Optionally, the processing module 132 is also configured to include one or more sub-channels in the sidelink resource pool, and determine the first sub-channel with the lowest or highest frequency domain position; in the first sub-channel according to the setting Select the K first IRBs in sequence.

Optionally, the processing module 132 is also configured to determine the first resource block set from the one or more resource block sets containing frequency domain resources in one or more resource block sets in the side row resource pool; Select K first IRBs within the first resource block set.

Optionally, the processing module 132 is also configured to allow the number of the first resource block sets to be two or more, and within the two or more first resource block sets, according to the first IRB selection is performed in the selection order of resource block sets, and K first IRBs are selected.

Optionally, the processing module 132 is also configured to determine the first resource block set through preconfiguration or network device instructions; or determine the priority of the one or more resource block sets, and determine the first resource block set based on the priority. The first resource block set; or the first resource block set is determined according to the frequency domain starting position of the one or more resource block sets.

Optionally, the processing module 132 is also configured to determine all PRBs on the K first IRBs as the first PRB set; or determine some of the PRBs on the first IRBs as the first PRB set.

Optionally, the number of the first PRBs that the PSCCH needs to occupy is a positive integer multiple of the number of PRBs included in one IRB.

Optionally, the processing module 132 is also configured for K=1 to select N PRBs on the first IRB as the first PRBs according to the frequency domain positions of the PRBs on the first IRB.

Optionally, the processing module 132 is also configured to sort the K first IRBs when K is greater than 1; select the first PRB from the K first IRBs according to the sorting until selection Find the N first PRBs that the PSCCH needs to occupy, where the first PRB set includes the N first PRBs.

Optionally, the processing module 132 is also configured to sort according to the frequency domain position of the first IRB or the index number of the IRB.

Optionally, the processing module 132 is also configured to traverse the K first IRBs according to the ordering; for the current traversal to the first IRB, select the first IRB according to the frequency domain position of the PRB included in the first IRB. The first PRB is traversed until the N first PRBs that the PSCCH needs to occupy are selected from the K first IRBs.

Optionally, the processing module 132 is also configured to select the first PRB according to the frequency domain position of the PRB in the K first IRBs until the N first PRBs are selected, where K is greater than 1. , the first PRB set includes the N first PRBs.

In the embodiment of the present application, when the terminal device performs sidelink SL transmission, the first physical resource block PRB set within the first interleaved resource block IRB set occupied by the PSCCH is determined; and the PSCCH is sent through the first PRB set , the first IRB set includes one or more first IRBs, the first PRB set includes one or more first PRBs, when using the shared spectrum for sidelink communication, the frequency domain position of the PSCCH can be accurately determined .

The communication device 130 is a terminal device:

The processing module 132 is configured to determine the first PRB set within the first IRB set occupied by the PSCCH when the terminal device performs SL reception. The first IRB set includes one or more first IRBs. The first PRB set including one or more first PRBs;

The transceiver module 131 is configured to perform blind detection on the PSCCH at the frequency domain position of the first PRB.

Optionally, the processing module 132 is also configured to determine the frequency domain location of the first IRB among the IRBs included in the sidelink resource pool, where the SL transmission includes the PSCCH and/or physical side The line shared channel PSSCH is sent.

Optionally, the processing module 132 is also configured to include one or more sub-channels in the sidelink resource pool, and determine the first sub-channel with the lowest or highest position in the frequency domain; in the first sub-channel according to the set order Select the K first IRBs.

Optionally, the processing module 132 is also configured to sort the K first IRBs if K is greater than 1;

Select the first PRB from the K first IRBs according to the ordering until the N first PRBs that need to be occupied by the PSCCH are selected, where the first PRB set includes the N first PRBs. PRB.

In the embodiment of the present application, when the terminal device performs SL reception, it can determine the first PRB in the first IRB occupied by the PSCCH, and perform a blind detection on the PSCCH at the position of the first PRB. When using shared spectrum for sidelink communication, the frequency domain location of the PSCCH can be accurately determined.

Please refer to Figure 14, which is a schematic structural diagram of another communication device 140 provided by an embodiment of the present application. The communication device 140 may be a terminal device, a network device, a chip, a chip system, or a processor that supports a terminal device to implement the above method, or a chip, a chip system, or a processor that supports a network device to implement the above method. Processor etc. The device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.

Communication device 140 may include one or more processors 141. The processor 141 may be a general-purpose processor or a special-purpose processor, or the like. For example, it can be a baseband processor or a central processing unit. The baseband processor can be used to process communication protocols and communication data. The central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs. , processing data for computer programs.

Optionally, the communication device 140 may also include one or more memories 142, on which a computer program 144 may be stored. The processor 141 executes the computer program 144, so that the communication device 140 performs the steps described in the above method embodiments. method. Optionally, the memory 142 may also store data. The communication device 140 and the memory 142 can be provided separately or integrated together.

Optionally, the communication device 140 may also include a transceiver 145 and an antenna 146. The transceiver 145 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions. The transceiver 145 may include a receiver and a transmitter. The receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function; the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.

Optionally, the communication device 140 may also include one or more interface circuits 147. The interface circuit 147 is used to receive code instructions and transmit them to the processor 141 . The processor 141 executes the code instructions to cause the communication device 140 to perform the method described in the above method embodiment.

In one implementation, the processor 141 may include a transceiver for implementing receiving and transmitting functions. For example, the transceiver may be a transceiver circuit, an interface, or an interface circuit. The transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together. The above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.

In one implementation, the processor 141 may store a computer program 143, and the computer program 143 runs on the processor 141, causing the communication device 140 to perform the method described in the above method embodiment. The computer program 143 may be solidified in the processor 141, in which case the processor 141 may be implemented by hardware.

In one implementation, the communication device 140 may include a circuit, which may implement the functions of sending or receiving or communicating in the foregoing method embodiments. The processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc. The processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.

The communication device described in the above embodiments may be a sending device or a receiving device (such as the receiving device in the foregoing method embodiment), but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited to Limitations of Figure 14. The communication device may be a stand-alone device or may be part of a larger device. For example, the communication device may be:

(1) Independent integrated circuit IC, or chip, or chip system or subsystem;

(2) A collection of one or more ICs. Optionally, the IC collection may also include storage components for storing data and computer programs;

(3)ASIC, such as modem;

(4) Modules that can be embedded in other devices;

(5) Receivers, terminal equipment, intelligent terminal equipment, cellular phones, wireless equipment, handheld devices, mobile units, vehicle-mounted equipment, network equipment, cloud equipment, artificial intelligence equipment, etc.;

(6) Others, etc.

For the case where the communication device may be a chip or a chip system, refer to the schematic structural diagram of the chip shown in FIG. 15 . The chip shown in FIG. 15 includes a processor 151 and an interface 152. The number of processors 121 may be one or more, and the number of interfaces 152 may be multiple.

Optionally, the chip also includes a memory 153, which is used to store necessary computer programs and data.

The chip is used to implement the functions of any of the above method embodiments when executed.

Those skilled in the art can also understand that the various illustrative logical blocks and steps listed in the embodiments of this application can be implemented by electronic hardware, computer software, or a combination of both. Whether such functionality is implemented in hardware or software depends on the specific application and overall system design requirements. Those skilled in the art can use various methods to implement the described functions for each specific application, but such implementation should not be understood as exceeding the protection scope of the embodiments of the present application.

Embodiments of the present application also provide a communication system for PSCCH transmission. The system includes the communication device as the terminal equipment in the aforementioned embodiment of FIG. 13 , or the system includes the communication device as the terminal equipment in the aforementioned embodiment of FIG. 14 .

This application also provides a readable storage medium on which instructions are stored. When the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.

This application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer programs. When the computer program is loaded and executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer program may be stored in or transferred from one computer-readable storage medium to another, for example, the computer program may be transferred from a website, computer, server, or data center Transmission to another website, computer, server or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more available media integrated. The usable media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks, SSD)) etc.

Persons of ordinary skill in the art can understand that the first, second, and other numerical numbers involved in this application are only for convenience of description and are not used to limit the scope of the embodiments of this application and also indicate the order.

At least one in this application can also be described as one or more, and the plurality can be two, three, four or more, which is not limited by this application. In the embodiment of this application, for a technical feature, the technical feature is distinguished by "first", "second", "third", "A", "B", "C" and "D", etc. The technical features described in "first", "second", "third", "A", "B", "C" and "D" are in no particular order or order.

The corresponding relationships shown in each table in this application can be configured or predefined. The values of the information in each table are only examples and can be configured as other values, which are not limited by this application. When configuring the correspondence between information and each parameter, it is not necessarily required to configure all the correspondences shown in each table. For example, in the table in this application, the corresponding relationships shown in some rows may not be configured. For another example, appropriate deformation adjustments can be made based on the above table, such as splitting, merging, etc. The names of the parameters shown in the titles of the above tables may also be other names understandable by the communication device, and the values or expressions of the parameters may also be other values or expressions understandable by the communication device. When implementing the above tables, other data structures can also be used, such as arrays, queues, containers, stacks, linear lists, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables. wait.

Predefinition in this application can be understood as definition, pre-definition, storage, pre-storage, pre-negotiation, pre-configuration, solidification, or pre-burning.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Skilled artisans may implement the described functionality using different methods for each specific application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be described again here.

The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application. should be covered by the protection scope of this application. Therefore, the protection scope of this application should be subject to the protection scope of the claims.

Claims

A method for sending a physical sidelink control channel (PSCCH), which is performed by a terminal device. The method includes:

When the terminal equipment performs sidelink SL transmission, determine the first physical resource block PRB set within the first interleaved resource block IRB set occupied by the PSCCH;

The PSCCH is transmitted through the first PRB set, the first IRB set includes one or more first IRBs, and the first PRB set includes one or more first PRBs.
The method according to claim 1, characterized in that determining the first interleaved resource block IRB set occupied by the PSCCH includes:

Determine the frequency domain location of the first IRB among the IRBs included in the sidelink resource pool of the PSCCH and/or the physical sidelink shared channel PSSCH, where the SL transmission includes the PSCCH and/or PSSCH transmission.
The method of claim 2, further comprising:

The number K of the first IRBs included in the first IRB set is determined, where K is a positive integer.
The method of claim 3, wherein determining the number K of the first IRBs includes:

Determine the number N of first PRBs that the PSCCH needs to occupy;

Determine the number M of PRBs contained in an IRB;

The K is determined based on the N and the M, where the N and M are positive integers.
The method of claim 3, wherein determining the number K of the first IRBs includes:

Determine the number L of second IRBs included in the sub-channel in the sidelink resource pool, and determine the K based on the L, where the L is a positive integer.
The method according to claim 2, characterized in that determining the frequency domain position of the first IRB includes:

The sidelink resource pool includes one or more sub-channels, and the first sub-channel with the lowest or highest position in the frequency domain is determined;

K first IRBs are selected in the first sub-channel according to a setting order.
The method according to claim 2, characterized in that determining the frequency domain position of the first IRB includes:

The sidelink resource pool contains frequency domain resources in one or more resource block sets, and the first resource block set is determined from the one or more resource block sets;

Select K first IRBs within the first resource block set.
The method of claim 7, further comprising:

The number of the first resource block sets is two or more. Within the two or more first resource block sets, IRB selection is performed according to the selection order of the first resource block sets. Out of K the first IRB.
The method according to claim 7, characterized in that determining the first resource block set includes:

The first set of resource blocks is determined through preconfiguration or network device indication; or

Determine priorities of the one or more resource block sets, and determine the first resource block set based on the priorities; or

The first resource block set is determined according to the height of the frequency domain starting position of the one or more resource block sets.
The method according to claim 1, wherein determining the first set of physical resource blocks (PRBs) on the first IRB occupied by the PSCCH includes:

Determine all PRBs on the K first IRBs as the first PRB set; or

Determine some of the PRBs on the first IRB to be the first PRB set.
The method according to claim 10, characterized in that the number of the first PRBs that the PSCCH needs to occupy is a positive integer multiple of the number of PRBs included in one IRB.
The method of claim 10, further comprising:

The K=1, according to the frequency domain position of the PRB on the first IRB, select N PRBs on the first IRB as the first PRB.
The method of claim 10, wherein determining that some of the PRBs on the first IRB are the first PRB set includes:

The K is greater than 1, sort the K first IRBs;

Select the first PRB from the K first IRBs according to the ordering until the N first PRBs that need to be occupied by the PSCCH are selected, wherein the first PRB set includes the N first PRBs. PRB.
The method of claim 13, wherein sorting the K first IRBs includes:

Sort according to the frequency domain position of the first IRB or the index number of the IRB.
The method of claim 13, wherein selecting the first PRB from the K first IRBs according to the sorting includes:

Traverse the K first IRBs according to the order;

For the current traversal to the first IRB, the first PRB is selected according to the frequency domain position of the PRB included in the first IRB until the Nth PSCCH that needs to be occupied is selected from the K first IRBs. One PRB ends the traversal.
The method of claim 10, wherein determining that some of the PRBs on the first IRB are the first PRB set includes:

The K is greater than 1, and the first PRB is selected according to the frequency domain position of the PRB in the K first IRBs until the N first PRBs are selected, wherein the first PRB set includes the N The first PRB.
A method for receiving PSCCH, characterized in that it is executed by a terminal device, and the method includes:

When the terminal device performs SL reception, the first PRB set within the first IRB set occupied by the PSCCH is determined. The first IRB set includes one or more first IRBs, and the first PRB set includes one or more first IRBs. a PRB;

Blind detection is performed on the PSCCH at the frequency domain position of the first PRB.
The method according to claim 17, characterized in that determining the first set of IRBs occupied by the PSCCH includes:

Among the IRBs included in the sidelink resource pool, the frequency domain location of the first IRB is determined, wherein the SL transmission includes the PSCCH and/or physical sidelink shared channel PSSCH transmission.
The method of claim 18, further comprising:

The number K of the first IRBs included in the first IRB set is determined, where K is a positive integer.
The method of claim 19, wherein determining the number K of the first IRBs includes:

Determine the number N of first PRBs that the PSCCH needs to occupy;

Determine the number M of PRBs contained in an IRB;

The K is determined based on the N and the M, where the N and M are positive integers.
The method of claim 19, wherein determining the number K of the first IRBs includes:

Determine the number L of second IRBs included in the sub-channel in the sidelink resource pool, and determine the K based on the L, where the L is a positive integer.
The method according to claim 18, characterized in that determining the frequency domain position of the first IRB includes:

The sidelink resource pool includes one or more sub-channels, and the first sub-channel with the lowest or highest position in the frequency domain is determined;

K first IRBs are selected in the first sub-channel according to a setting order.
The method according to claim 18, characterized in that determining the frequency domain position of the first IRB includes:

The sidelink resource pool contains frequency domain resources in one or more resource block sets, and the first resource block set is determined from the one or more resource block sets;

Select K first IRBs within the first resource block set.
The method of claim 23, further comprising:

The number of the first resource block sets is two or more. Within the two or more first resource block sets, IRB selection is performed according to the selection order of the first resource block sets. Out of K the first IRB.
The method according to claim 23, characterized in that determining the first resource block set includes:

The first set of resource blocks is determined through preconfiguration or network device indication; or

Determine priorities of the one or more resource block sets, and determine the first resource block set based on the priorities; or

The first resource block set is determined according to the height of the frequency domain starting position of the one or more resource block sets.
The method according to claim 17, wherein determining the first set of physical resource blocks (PRBs) on the first IRB occupied by the PSCCH includes:

Determine all PRBs on the K first IRBs as the first PRB set; or

Determine some of the PRBs on the first IRB to be the first PRB set.
The method according to claim 26, characterized in that the number of the first PRBs that the PSCCH needs to occupy is a positive integer multiple of the number of PRBs included in one IRB.
The method of claim 26, further comprising:

The K=1, according to the frequency domain position of the PRB on the first IRB, select N PRBs on the first IRB as the first PRB.
The method of claim 26, wherein determining that some of the PRBs on the first IRB are the first PRB set includes:

The K is greater than 1, sort the K first IRBs;

Select the first PRB from the K first IRBs according to the ordering until the N first PRBs that need to be occupied by the PSCCH are selected, wherein the first PRB set includes the N first PRBs. PRB.
The method of claim 29, wherein sorting the K first IRBs includes:

Sort according to the frequency domain position of the first IRB or the index number of the IRB.
The method of claim 29, wherein selecting the first PRB from the K first IRBs according to the sorting includes:

Traverse the K first IRBs according to the order;

For the current traversal to the first IRB, the first PRB is selected according to the frequency domain position of the PRB included in the first IRB until the Nth PSCCH that needs to be occupied is selected from the K first IRBs. One PRB ends the traversal.
The method of claim 29, wherein determining that some of the PRBs on the first IRB are the first PRB set includes:

The K is greater than 1, and the first PRB is selected according to the frequency domain position of the PRB in the K first IRBs until the N first PRBs are selected, wherein the first PRB set includes the N The first PRB.
A communication device, characterized by including:

A processing module configured to determine the first physical resource block PRB set within the first interleaved resource block IRB set occupied by the PSCCH when the terminal equipment performs sidelink SL transmission;

A transceiver module, configured to send the PSCCH through the first PRB set, where the first IRB set includes one or more first IRBs, and the first PRB set includes one or more first PRBs.
A communication device, characterized by including:

The processing module determines a first PRB set within a first IRB set occupied by the PSCCH when the terminal device performs SL reception. The first IRB set includes one or more first IRBs, and the first PRB set includes one or more first IRBs. multiple first PRBs;

A transceiver module, configured to perform blind detection on the PSCCH at the frequency domain position of the first PRB.
A communication device, characterized in that the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the claims The method described in any one of 1 to 16.
A communication device, characterized in that the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the claims Methods described in 17 to 32.
A communication device, characterized by including: a processor and an interface circuit;

The interface circuit is used to receive code instructions and transmit them to the processor;

The processor is configured to run the code instructions to perform the method according to any one of claims 1 to 16.
A communication device, characterized by including: a processor and an interface circuit;

The interface circuit is used to receive code instructions and transmit them to the processor;

The processor is configured to execute the code instructions to perform the method as claimed in claims 17 to 32.
A computer-readable storage medium for storing instructions, which when executed, enables the method according to any one of claims 1 to 16 to be implemented.
A computer-readable storage medium configured to store instructions that, when executed, enable the methods described in claims 17 to 32 to be implemented.