CN115004820A

CN115004820A - PSCCH (Power System control channel) transmitting/receiving method and device

Info

Publication number: CN115004820A
Application number: CN202280001160.0A
Authority: CN
Inventors: 赵群; 赵文素
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2022-04-21
Filing date: 2022-04-21
Publication date: 2022-09-02
Also published as: WO2023201669A1

Abstract

The embodiment of the application discloses a method and a device for sending/receiving a PSCCH (pseudo-random channel), which can be used in a communication system, the method comprises the steps of determining a first Physical Resource Block (PRB) set in a first IRB set occupied by the PSCCH when terminal equipment carries out side-link SL sending, sending the PSCCH through the first PRB set, wherein the first IRB set comprises one or more first IRBs, the first PRB set comprises one or more first PRBs, determining the first PRBs in the first IRB occupied by the PSCCH when the terminal equipment carries out SL receiving, and carrying out blind detection on the PSCCH at the positions of the first PRBs. In the embodiment of the application, when the shared spectrum is used for sidelink communication, the frequency domain position of the PSCCH can be accurately determined.

Description

PSCCH (Power System control channel) transmitting/receiving method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting/receiving a PSCCH.

Background

When a terminal device and a terminal device perform Sidelink (SL) on an unlicensed spectrum or a shared spectrum, how to use an Interleaved Resource Block (IRB) to perform Physical Sidelink Control Channel (PSCCH) transmission becomes a problem to be solved.

Disclosure of Invention

The embodiment of the application provides a method and a device for transmitting/receiving a PSCCH (pseudo-random access channel), which can accurately determine the frequency domain position of the PSCCH when a shared spectrum is used for performing sidelink communication.

In a first aspect, an embodiment of the present application provides a method for sending a PSCCH, where the method is executed by a terminal device, and the method includes:

when terminal equipment transmits a side-link SL, determining a first Physical Resource Block (PRB) set in a first staggered resource block (IRB) set occupied by a PSCCH, and transmitting the PSCCH through the first PRB set, wherein the first IRB set comprises one or more first IRBs, and the first PRB set comprises one or more first PRBs.

In the embodiment of the application, when the terminal device performs sidelink SL transmission, a first physical resource block PRB set in a first interleaved resource block IRB set occupied by a PSCCH may be determined, and the PSCCH may be transmitted through the first PRB set, where the first IRB set includes one or more first PRBs, and the first PRB set includes one or more first PRBs, and when sidelink communication is performed using a shared spectrum, a frequency domain position of the PSCCH may be accurately determined.

In a second aspect, an embodiment of the present application provides a method for receiving a PSCCH, where the method is performed by a terminal device, and the method includes:

when terminal equipment receives SL, determining a first PRB set in a first IRB set occupied by PSCCH, wherein the first IRB set comprises one or more first IRBs and the first PRB set comprises one or more first PRBs; and performing blind detection on the PSCCH at the frequency domain position of the first PRB.

In the embodiment of the application, when terminal equipment receives a SL, a first PRB set in a first IRB set occupied by a PSCCH is determined, where the first IRB set includes one or more first IRBs, the first PRB set includes one or more first PRBs, and the PSCCH is blind-detected in a frequency domain position of the first PRBs. When using the shared spectrum for sidelink communications, the frequency domain location of the PSCCH can be accurately determined.

In a third aspect, an embodiment of the present application provides a communication apparatus, where the communication apparatus has a function of implementing part or all of the functions of the terminal device in the method according to the first aspect, for example, the function of the communication apparatus may have the functions in part or all of the embodiments in the present application, or may have the functions of implementing any one of the embodiments in the present application separately. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the communication device may include a transceiver module and a processing module configured to support the communication device to perform the corresponding functions of the above method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds computer programs and data necessary 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 a fourth aspect, this embodiment provides another communication apparatus, where the communication apparatus 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 apparatus may have the functions in some or all of the embodiments in this application, or may have the functions of any of the embodiments in this application separately. The functions can be realized by hardware, and the functions can also be realized by executing corresponding software by hardware. The hardware or software includes one or more units or modules corresponding to the above functions.

In one implementation, the communication device may include a transceiver module and a processing module configured to support the communication device to perform the corresponding functions of the method. The transceiver module is used for supporting communication between the communication device and other equipment. The communication device may further comprise a memory module for coupling with the transceiver module and the processing module, which holds computer programs and data necessary for the communication device.

In a fifth aspect, an embodiment of the present application provides a communication device, which includes a processor, and when the processor calls a computer program in a memory, the processor performs the method according to the first aspect.

In a sixth aspect, an embodiment of the present application provides a communication device, which includes a processor, and when the processor calls a computer program in a memory, the processor executes the method according to the second aspect.

In a seventh aspect, an embodiment of the present application provides a communication apparatus, including a processor and a memory, where the memory stores a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the first aspect.

In an eighth aspect, an embodiment of the present application provides a communication apparatus, including a processor and a memory, where the memory stores a computer program; the processor executes the computer program stored in the memory to cause the communication device to perform the method of the second aspect.

In a ninth aspect, embodiments of the present application provide a communication apparatus, the apparatus includes a processor and an interface circuit, the interface circuit is configured to receive code instructions and transmit the code instructions to the processor, and the processor is configured to execute the code instructions to cause the apparatus to perform the method according to the first aspect.

In a tenth aspect, an embodiment of the present application provides a communication apparatus, which includes a processor and an interface circuit, where the interface circuit is configured to receive code instructions and transmit the code instructions to the processor, and the processor is configured to execute the code instructions to cause the apparatus to perform the method according to the second aspect.

In an eleventh aspect, an embodiment of the present application provides a communication system for PDCCH transmission, where the system includes the communication apparatus of the third aspect and the communication apparatus of the fourth aspect, or the system includes the communication apparatus of the fifth aspect and the communication apparatus of the sixth aspect, or the system includes the communication apparatus of the seventh aspect and the communication apparatus of the eighth aspect, or the system includes the communication apparatus of the ninth aspect and the communication apparatus of the tenth aspect.

In a twelfth aspect, an embodiment of the present invention provides a computer-readable storage medium, configured to store instructions for the terminal device, where the instructions, when executed, cause the terminal device to perform the method according to the first aspect.

In a thirteenth aspect, an embodiment of the present invention provides a readable storage medium for storing instructions for the network device, where the instructions, when executed, cause the network device to perform the method of the second aspect.

In a fourteenth aspect, the present application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In a fifteenth aspect, the present application also provides a computer program product comprising a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.

In a sixteenth aspect, the present application provides a chip system, which includes at least one processor and an interface, and is configured to enable a terminal device to implement the functions referred to in the first aspect, for example, to determine or process at least one of data and information referred to in the foregoing method. In one possible design, the chip system further includes a memory for storing computer programs and data necessary for the terminal device. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In a seventeenth aspect, the present application provides a chip system, which includes at least one processor and an interface, for enabling a network device to implement the functions related to the second aspect, for example, to determine or process at least one of data and information related to the method. In one possible design, the system-on-chip further includes a memory for storing computer programs and data necessary for the network device. The chip system may be formed by a chip, or may include a chip and other discrete devices.

In an eighteenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of the first aspect described above.

In a nineteenth aspect, the present application provides a computer program which, when run on a computer, causes the computer to perform the method of the second aspect described above.

Drawings

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

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the present application;

fig. 2 is a flowchart illustrating a method for transmitting a PSCCH according to an embodiment of the present disclosure;

fig. 3 is a flowchart illustrating a method for transmitting a PSCCH according to an embodiment of the present disclosure;

fig. 4 is a flowchart illustrating a method for transmitting a PSCCH according to an embodiment of the present disclosure;

fig. 5 is a flowchart illustrating a method for transmitting a PSCCH according to an embodiment of the present disclosure;

fig. 6 is a flowchart illustrating a method for sending PSCCH according to an embodiment of the present application;

fig. 7 is a flowchart illustrating a PSCCH receiving method according to an embodiment of the present disclosure;

fig. 8 is a flowchart illustrating a PSCCH receiving method according to an embodiment of the present disclosure;

fig. 9 is a flowchart illustrating a PSCCH receiving method according to an embodiment of the present disclosure;

fig. 10 is a flowchart illustrating a PSCCH receiving method according to an embodiment of the present disclosure;

fig. 11 is a flowchart illustrating a PSCCH receiving method according to an embodiment of the present disclosure;

fig. 12 is a schematic diagram illustrating a determination of a frequency domain position of a PSCCH according to an embodiment of the present disclosure;

fig. 13 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a chip according to an embodiment of the present application.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain 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 particular embodiments only and is not intended to be limiting of the embodiments of the present disclosure. As used in the 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 indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information in the embodiments of the present disclosure, such information should not be limited by these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of embodiments of the present disclosure. Depending on context, the word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination"

For the purposes of brevity and ease of understanding, the terms "greater than" or "less than", "above" or "below" are used herein when characterizing a size relationship. But it will be understood by those skilled in the art that: the term "greater than" also covers the meaning of "greater than or equal to," less than "also covers the meaning of" less than or equal to "; the term "higher than" encompasses the meaning of "higher than equal to" and "lower than" also encompasses the meaning of "lower than equal to".

For ease of understanding, terms referred to in the present application will be first introduced.

The terminal equipment and the terminal equipment are communicated through a sidelink. The Sidelink includes a Physical Sidelink Control Channel (PSCCH) and a Physical Sidelink shared Channel (PSCCH). The Sidelink Control Information (SCI) in the PSCCH may indicate information required for receiving the PSCCH, such as PSCCH channel resources and transmission parameters. The PSSCH is used to carry data for sidelink communications.

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

An Interleaved Resource Block (IRB) refers to a Resource block with a fixed number of Resource blocks between two consecutive interleaved Resource blocks in the same interleaved Resource block index. For example, if two interleaved Resource blocks are separated by M Resource blocks, the index is IRB with M, which includes Physical Resource Blocks (PRBs) of { M, M + M, 2M + M, 3M + M, … … }, where M ∈ {0,1, …, M-1 }. In a new radio unlicensed (NR-U) system, an IRB structure is defined for two subcarrier spaces (SCS) of 15kHz and 30kHz, respectively, where 15kHz, M ═ 10, 10 IRB indexes, 30kHz, M ═ 5, and 5 IRB indexes are provided. That is, when SCS is 30khz and M is 5, 5 comb indices are shared, and for the first 1 IRB index, that is, 0 IRB index, the PRB corresponding to the interleaved resource block included in the interleaved index is {0,5,10,15,20,25,30,35,40,45 }.

In order to better understand the PSCCH transmission/reception method disclosed in the embodiments of the present application, a communication system to which the embodiments of the present application are applicable is first described below.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a communication system according to an embodiment of the present disclosure. The communication system may include, but is not limited to, one network device and one terminal device, the number and form of the devices shown in fig. 1 are only for example and do not constitute a limitation to the embodiments of the present application, and two or more network devices and two or more terminal devices may be included in practical applications. The communication system shown in fig. 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: a Long Term Evolution (LTE) system, a 5th generation (5G) mobile communication system, a 5G New Radio (NR) system, or other future new mobile communication systems. It should be further noted that the side links in the embodiment of the present application may also be referred to as side links or through links.

The network device 101 in the embodiment of the present application is an entity for transmitting or receiving signals on the network side. For example, the network device 101 may be an evolved NodeB (eNB), a transmission point (TRP), a next generation base station (gNB) in an NR system, a base station in other future mobile communication systems, or an access node in a wireless fidelity (WiFi) system. The embodiments of the present application do not limit the specific technologies and the specific device forms used by the network devices. The network device provided in the embodiment of the present application may be composed of a Central Unit (CU) and a Distributed Unit (DU), where a CU may also be referred to as a control unit (control unit), and a protocol layer of a network device, such as a base station, may be split by using a structure of CU-DU, functions of a part of the protocol layer are centrally controlled by the CU, and functions of the remaining part or all of the protocol layer are distributed in the DU, and the DU is centrally controlled by the CU.

The terminal device 102 in the embodiment of the present application is an entity, such as a mobile phone, on the user side for receiving or transmitting signals. A terminal device may also be referred to as a terminal device (terminal), a User Equipment (UE), a Mobile Station (MS), a mobile terminal device (MT), etc. The terminal device may be a vehicle having a communication function, a smart vehicle, a mobile phone (mobile phone), a wearable device, a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal device in industrial control (industrial control), a wireless terminal device in self-driving (self-driving), a wireless terminal device in remote surgery (remote medical supply), a wireless terminal device in smart grid (smart grid), a wireless terminal device in transportation safety (transportation safety), a wireless terminal device in smart city (smart city), a wireless terminal device in smart home (smart home), and the like. The embodiment of the present application does not limit the specific technology and the specific device form adopted by the terminal device.

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

It is to be understood that the communication system described in the embodiment of the present application is for more clearly illustrating the technical solution of the embodiment of the present application, and does not constitute a limitation to the technical solution provided in the embodiment of the present application, and as a person having ordinary skill in the art knows that along with the evolution of the system architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

A PSCCH transmitting/receiving method and apparatus thereof provided by the present application are described in detail below with reference to the accompanying drawings.

Referring to fig. 2, fig. 2 is a flowchart illustrating a method for sending a PSCCH according to an embodiment of the present disclosure. The method is performed by a terminal device, as shown in fig. 2, and may include, but is not limited to, the following steps:

s21, when the terminal device performs the sidelink SL transmission, determining a first physical resource block PRB set in a first interleaving resource IRB set occupied by the PSCCH.

Wherein the first set of IRBs comprises one or more first IRBs, and the first set of PRBs comprises one or more first PRBs.

Alternatively, the terminal device may perform Sidelink (SL) communication over an unlicensed spectrum (unlicensed spectrum) or a shared spectrum (shared spectrum).

In the embodiment of the present application, the terminal device may acquire a sidelink resource pool configured for the PSCCH and/or PSCCH, 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 IRBs included in the sidestream resource pool, wherein the one or more first IRBs occupied by the PSCCH form a first TRB set.

Optionally, when one or more sub-channels are included in the side-row resource pool corresponding to the PSCCH and/or PSCCH, one or more first IRBs occupied by the PSCCH may be determined according to a frequency domain position and/or an IRB index number of a second IRB included in the sub-channels, where the first IRB set includes the first IRBs occupied by the PSCCH.

Optionally, when the side Resource pool corresponding to the PSCCH and/or PSCCH includes frequency resources in one or more Resource Block Sets (RBs), one or more first IRBs occupied by the PSCCH are determined from a third IRB included in the one or more Resource block sets according to a frequency domain position and/or an IRB index number of the third IRB, where the first IRB Set includes the first IRB occupied by the PSCCH.

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

S22, the PSCCH is transmitted over the first set of PRBs.

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, Sidelink Control Information (SCI) in the PSCCH is transmitted on the first PRB, and Information required for receiving the PSCCH, such as PSCCH channel resources and transmission parameters, is indicated through the SCI. The PSSCH is used to carry data for sidelink communications.

Referring to fig. 3, fig. 3 is a flowchart illustrating a method for sending a PSCCH according to an embodiment of the present disclosure. The method is performed by a terminal device, as shown in fig. 3, and may include, but is not limited to, the following steps:

s31, the terminal device performs SL transmission to determine the number K of the first IRBs included in the first IRB set.

It should be noted that the SL transmission includes PSCCH and/or PSCCH transmission, and one or more IRBs occupied by PSCCH and/or PSCCH transmission may be determined as the first IRB.

Wherein K is a positive integer.

As a possible implementation manner, the number N of first PRBs that the PSCCH needs to occupy may be determined, the number M of PRBs included in one IRB may be determined, and K may be determined based on N and M, where N and M are positive integers. Optionally, K ═ ceil (N/M), i.e., rounding up N/M, yields the number K of first IRBs. The number of PRBs included in 1 IRB. For example, if the number of first PRBs occupied by the PSCCH is 15, i.e., N equals 15, and one IRB includes 10 PRBs, i.e., M equals 10, then the PSCCH needs to occupy the frequency resources of 2 first IRBs, i.e., K equals 2.

It should be noted that the number N of first PRBs that the PSCCH needs to occupy may be determined based on a protocol agreement; or, the number N of first PRBs that the PSCCH needs to occupy may be determined based on pre-configuration; alternatively, the number N of first PRBs that the PSCCH needs to occupy may receive a configuration or indication of downlink control signaling by the network device.

It should be noted that the number M of PRBs included in one IRB may be determined based on a protocol agreement; alternatively, the number of PRBs M contained in one IRB may be determined based on pre-configuration; alternatively, the number M of PRBs included in one IRB may receive a configuration or an indication of downlink control signaling of the network device.

As another possible implementation manner, the side-row resource pool includes sub-channels, the number L of second IRBs included in the sub-channels may 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 contained within the sub-channel.

It should be noted that the number L of the second IRBs may be determined based on a protocol agreement; or the number L of second IRBs may be determined based on pre-configuration; alternatively, the number L of second IRBs may receive a configuration or indication of the network device downlink control signaling.

The determination process of N, M and L is not limited in the present application and may be selected according to actual situations.

S32, K first IRBs are determined from the IRBs included in the sidestream resource pool.

In the embodiment of the present application, the terminal device may acquire a sidelink resource pool configured for the PSCCH and/or PSCCH, 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 IRBs included in the sidestream resource pool, where the one or more first IRBs occupied by the PSCCH form the first TRB set.

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

Optionally, when the side-row resource pool corresponding to the PSCCH and/or PSCCH includes one or more sub-channels, the K first IRBs occupied by the PSCCH may be determined according to the frequency domain position and/or the index number of the second IRB in the second IRB included in the sub-channels.

Optionally, when the side Resource pool corresponding to the PSCCH and/or PSCCH includes frequency resources in one or more Resource Block Sets (RBs), the K first IRBs occupied by the PSCCH are determined according to the frequency domain position of the third IRB and/or the index number of the IRB from the third IRB included in the one or more Resource block sets.

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

Each IRB includes one or more PRBs, and a first set of PRBs occupied by the PSCCH may be determined from the PRBs included in the K first IRBs occupied by the PSCCH. The first set of PRBs includes one or more PRBs occupied by the PSCCH, where the one or more PRBs occupied by the PSCCH may belong to one first IRB or may belong to 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 PRBs, or the index number of the candidate PRBs.

S33, the PSCCH is transmitted over the first set of PRBs.

As to the specific implementation manner of step S33, any implementation manner possible in any embodiment of the present application may be adopted, and details are not described here. In the embodiment of the application, the terminal equipment performs SL transmission, determines the frequency domain position of the first IRB in the IRBs corresponding to the PSCCH/PSSCH, and/or determines the number K of the first IRBs included in the first IRB set, and transmits the PSCCH through the first PRB set.

Referring to fig. 4, fig. 4 is a flowchart illustrating a method for sending a PSCCH according to an embodiment of the present disclosure. The method is performed by a terminal device, as shown in fig. 4, and may include, but is not limited to, the following steps:

s41, the terminal device performs sidelink SL transmission.

Alternatively, the terminal device may perform Sidelink (SL) communication over an unlicensed spectrum (unlicensed spectrum) or a shared spectrum (shared spectrum). It is noted that SL transmissions include PSCCH and/or PSCCH transmissions.

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

And determining a side line resource pool configured for PSCCH and/or PSSCH transmission, wherein the side line resource pool comprises one or more IRBs. Optionally, when one or more subchannels (subchannels) are included in the sidestream resource pool, a subchannel with a lowest frequency domain position or a subchannel with a highest frequency domain position in the sidestream resource pool may be determined as the first subchannel.

S43, selecting K first IRBs in the first sub-channel according to a predetermined sequence.

It should be noted that, in the present application, a specific manner of selecting the K first IRBs in the first sub-channel according to the set order is not limited, and the selection may be performed according to an actual situation.

Optionally, K first IRBs may be selected from the IRB with the lowest frequency domain position in the first sub-channel according to the sequence from the lowest frequency domain position to the highest frequency domain position; alternatively, K first IRBs may be selected in the first sub-channel from the IRB with the highest frequency domain position in the order from the highest frequency domain position to the lowest frequency domain position.

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 where the PRB with the highest frequency domain position in the PRB set included in the IRB is located.

Optionally, K first IRBs may be selected in the first sub-channel from the IRB with the smallest IRB index according to the order of the indexes from small to large; alternatively, K first IRBs may be selected in the first subchannel from the IRB with the largest IRB index in descending order of the index.

Each IRB includes one or more PRBs, and the first set of PRBs occupied by the PSCCH may be determined from the PRBs included in one or more first IRBs occupied by the PSCCH. The first set of PRBs includes one or more PRBs occupied by the PSCCH, where the one or more PRBs occupied by the PSCCH may belong to one first IRB or may belong to 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 PRBs, or the index number of the candidate PRBs.

S44, the PSCCH is transmitted over the first set of PRBs.

As to the specific implementation manner of step S44, any implementation manner possible in any embodiment of the present application may be adopted, and details are not described here. In the embodiment of the application, the terminal equipment performs side link SL transmission, determines that a side link resource pool of the PSCCH/PSSCH comprises one or more sub-channels, selects a first sub-channel with the lowest or the highest frequency position, selects K first IRBs in the first sub-channel according to a set sequence, and transmits the PSCCH through a first PRB set. When using the shared spectrum for sidelink communications, the frequency domain location of the PSCCH can be accurately determined.

Referring to fig. 5, fig. 5 is a flowchart illustrating a method for sending a PSCCH according to an embodiment of the present disclosure. The method is performed by a terminal device, as shown in fig. 5, and may include, but is not limited to, the following steps:

s51, the terminal device performs sidelink SL transmission.

For specific description of step S51, reference may be made to the description of relevant contents in the above embodiments, and details are not repeated here.

S52, the side-row resource pool of the PSCCH and/or PSCCH includes 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.

It should be noted that, in the present application, a specific manner for determining the first resource block set is not limited, and may be selected according to an actual situation.

Optionally, the first set of resource blocks may be determined by pre-configuration or network device indication; optionally, the first set of resource blocks may be determined based on the priority by determining a priority of one or more sets of resource blocks; optionally, the first set of resource blocks may be determined according to the height of the frequency domain starting position of one or more sets of resource blocks.

S53, K first IRBs are selected from the first resource block set.

Optionally, K first IRBs may be selected from the IRBs with the lowest frequency domain starting positions in the first resource block set according to a sequence from low to high of the frequency domain starting positions; optionally, K first IRBs may be selected from the IRBs with the highest frequency domain starting position within the first resource block set in order from the highest frequency domain starting position to the lowest frequency domain starting position.

Optionally, K first IRBs may be selected from the IRBs with the smallest IRB index in the first resource block set according to a sequence from small to large; optionally, K first IRBs may be selected in order from largest IRB index to smallest IRB index within the first resource block set.

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

It is understood that the resource block set is a frequency domain resource within a Listen Before Talk (LTB) sub-band.

And when the side-row resource pool comprises 1 first resource block set in 20MHz sub-bands, selecting K IRBs according to the height of the frequency domain starting position of the IRBs or the size of the IRB index.

When the sidestream resource pool comprises a first resource block set in more than 1 20MHz sub-band, firstly selecting one 20MHz sub-band, and then selecting a first IRB in the first resource set in the sub-band; if the number of the first IRBs selected from the first resource set in the sub-band is less than K, then another first IRB is selected from the first resource set included in another 20MHz sub-band, and the process is repeated until K first IRBs are selected.

Optionally, the selection indication of the multiple 20MHz sub-bands is determined by pre-configuring or receiving a downlink control signaling sent by the network device.

For example, the network device configures priorities of a plurality of 20MHz sub-bands, preferentially selects the 20MHz sub-band with the highest priority for use, and if the selected first IRB does not reach K, selects the 20MHz sub-band with the highest priority for use.

As another example, the network device configures one or a set of 20MHz sub-bands, and preferentially selects a sub-band of the one or the set of sub-bands for use.

Optionally, the 20MHz sub-band is selected according to the height of the frequency domain starting position, for example, the 20MHz sub-band preferably used by the 20MHz sub-band with the lowest frequency domain starting position is selected.

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

Each IRB includes one or more PRBs, and a first set of PRBs occupied by the PSCCH may be determined from the PRBs included in one or more first IRBs occupied by the PSCCH. The first PRB set includes one or more PRBs occupied by the PSCCH, where the one or more PRBs occupied by the PSCCH may belong to one first IRB or may belong to 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 PRBs, or the index number of the candidate PRBs.

S54, the PSCCH is transmitted through the first set of PRBs.

As to the specific implementation manner of step S54, any implementation manner possible in any embodiment of the present application may be adopted, and details are not described here. In the embodiment of the application, the terminal equipment performs SL transmission, determines that a side-row resource pool of the PSCCH/PSSCH contains frequency domain resources in one or more resource block sets, determines a first resource block set from the one or more resource block sets, selects K first IRBs in the first resource block set, and transmits the PSCCH through the first PRB set.

Referring to fig. 6, fig. 6 is a flowchart illustrating a method for sending a PSCCH according to an embodiment of the present disclosure. The method is performed by a terminal device, as shown in fig. 6, and may include, but is not limited to, the following steps:

s61, the terminal device performs sidelink SL transmission.

S62, determining a number K of first IRBs included in the first set of IRBs.

S63, frequency domain positions of the K first IRBs are determined from the side-row resource pool of the PSCCH and/or PSCCH.

For specific descriptions of steps S61-S63, reference may be made to the descriptions of relevant contents in the above embodiments, and further description is omitted here.

S64, a first set of PRBs occupied by the PSCCH is determined from the K first IRBs.

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

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

As another possible implementation, all PRBs on the K first IRBs are determined as the first set of PRBs.

It should be noted that, when all PRBs on 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 is 1, according to the frequency domain position of the PRB on the first IRB, selecting N PRBs on the first IRB as the first PRB, where N is the number of the first PRBs that the PSCCH needs to occupy.

As another possible implementation, a partial PRB on the first IRB is determined as the first PRB set.

Optionally, when K is greater than 1, the K first IRBs are ranked, and the first PRB is selected from the K first IRBs according to the ranking until N first PRBs that the PSCCH needs to occupy are selected.

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

Further, the K first IRBs may be traversed according to the order, and 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 traversal is finished by selecting the N first PRBs that the PSCCH needs to occupy from the K first IRBs. For example, the first PRB may be selected in order from low to high or from high to low in frequency domain position of the PRB corresponding to the current traversal to the first IPRB.

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

S65, the PSCCH is transmitted over the first set of PRBs.

As to the specific implementation manner of step S65, any possible implementation manner in any embodiment of the present application may be adopted, and details are not described here.

In the embodiment of the application, the terminal equipment performs side-link SL transmission, determines the frequency domain position of the first IRB in the candidate IRBs occupied by the PSCCH/PSCCH, and/or the number K of the first IRBs included in the first IRB set, and determines the first PRB set occupied by the PSCCH from the K first IRBs. When using the shared spectrum for sidelink communications, the frequency domain location of the PSCCH can be accurately determined.

Referring to fig. 7, fig. 7 is a flowchart illustrating a PSCCH receiving method according to an embodiment of the present disclosure. The method is performed by a terminal device, as shown in fig. 7, and may include, but is not limited to, the following steps:

s71, when the terminal device performs SL reception, determining a first PRB set in the first IRB set occupied by the PSCCH.

Optionally, when the side-row resource pool corresponding to the PSCCH and/or PSCCH includes one or more sub-channels, one or more first IRBs occupied by the PSCCH may be determined according to a frequency domain position and/or an IRB index number of a second IRB included in the sub-channels, 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 PSCCH includes frequency resources in one or more Resource Block Sets (RBs), one or more first IRBs occupied by the PSCCH are determined from third IRBs included in the one or more Resource block sets according to a frequency domain position of the third IRB and/or an IRB index number, where the first IRB Set includes the first IRBs occupied by the PSCCH.

S72, performing blind detection on the PSCCH at the frequency domain position of the first PRB.

After the first set of PRBs is determined, the PSCCH may be transmitted via one or more first PRBs included in the first set of PRBs. That is, Sidelink Control Information (SCI) in the PSCCH is transmitted on the first PRB, and indicates Information required for receiving the PSCCH, such as PSCCH channel resources and transmission parameters, through the SCI. The PSSCH is used to carry data for sidelink communications.

In the embodiment of the application, when terminal equipment receives a SL, a first PRB set in a first IRB set occupied by a PSCCH is determined, where the first IRB set includes one or more first IRBs, the first PRB set includes one or more first PRBs, and the PSCCH is blind-detected in a frequency domain position of the first PRBs. 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.

Referring to fig. 8, fig. 8 is a flowchart illustrating a PSCCH receiving method according to an embodiment of the present application. The method is performed by a terminal device, as shown in fig. 8, and may include, but is not limited to, the following steps:

s81, the terminal device performs SL reception, where the number K of the first IRBs included in the first IRB set.

S82, K first IRBs are determined from the IRBs included in the sidestream resource pool.

For specific descriptions of steps S81 to S82, reference may be made to the descriptions of the related contents in the above embodiments, and details are not repeated here.

S83, performing blind detection on the PSCCH at the frequency domain position of the first PRB.

For a detailed description of step S83, reference may be made to the description of relevant contents in the above embodiments, and details are not repeated here.

In this embodiment of the present application, when the terminal device 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 blind-detected 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.

Referring to fig. 9, fig. 9 is a flowchart illustrating a PSCCH receiving method according to an embodiment of the present disclosure. The method is performed by a terminal device, and as shown in fig. 9, the method may include, but is not limited to, the following steps:

s91, the terminal device performs SL reception.

For specific description of step S91, reference may be made to the description of relevant contents in the above embodiments, and details are not repeated here.

S92, the side-row resource pool of PSCCH and/or PSCCH includes one or more sub-channels, and determines the first sub-channel with the lowest or highest frequency domain position.

S93, selecting K first IRBs in the first sub-channel according to a predetermined sequence.

For specific descriptions of steps S91 to S93, reference may be made to the descriptions of the related contents in the above embodiments, and details are not repeated here.

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

S94, performing blind detection on the PSCCH at the frequency domain position of the first PRB.

For a detailed description of step S94, reference may be made to the description of relevant contents in the above embodiments, and details are not repeated here.

In the embodiment of the application, the terminal equipment receives the SL, determines that the side-row resource pool of the PSCCH/PSSCH comprises one or more sub-channels, selects the first sub-channel with the lowest or the highest frequency domain position, selects K first IRBs in the first sub-channel according to a set sequence, and performs 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.

Referring to fig. 10, fig. 10 is a flowchart illustrating a PSCCH receiving method according to an embodiment of the present application. The method is performed by a terminal device, as shown in fig. 10, and may include, but is not limited to, the following steps:

s101, the terminal equipment receives SL.

S102, the side-row resource pool of the PSCCH and/or the PSSCH comprises frequency domain resources in one or more resource block sets, and a first resource block set is determined from the one or more resource block sets.

S103, selecting K first IRBs in the first resource block set.

For specific descriptions of steps S101 to S103, reference may be made to the descriptions of the related contents in the above embodiments, and further description is omitted here.

And S104, performing blind detection on the PSCCH at the frequency domain position of the first PRB.

For a detailed description of step S104, reference may be made to the description of relevant contents in the above embodiments, which are not repeated herein.

In the embodiment of the application, the terminal equipment performs SL reception, the side-row resource pool of the PSCCH/PSSCH comprises frequency domain resources in one or more resource block sets, a first resource block set is determined from the one or more resource block sets, K first IRBs are selected from the first resource block set, and the PSCCH is subjected to blind detection 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.

Referring to fig. 11, fig. 11 is a flowchart illustrating a PSCCH receiving method according to an embodiment of the present application. The method is performed by a terminal device, as shown in fig. 11, and may include, but is not limited to, the following steps:

and S111, the terminal equipment receives the SL.

S112, determine the frequency domain position of the first IRB and the number K of the first IRB included in the first IRB set.

S113, a first PRB set occupied by the PSCCH is determined from the K first IRBs.

And S114, performing blind detection on the PSCCH at the frequency domain position of the first PRB.

For specific descriptions of step S111 to step S114, reference may be made to the descriptions of relevant contents in the above embodiments, and details are not repeated here.

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

For example, as shown in fig. 12, suppose that 15KHz SCS exists, 10 IRBs exist within a 20MHz sub-band, IRB index is 0-9, 10 PRBs exist within each IRB, a sideline resource pool contains 8 IRBs with IRB index of 0-7 in the 10 IRBs, and each two IRBs are subhandover, i.e., IRB index {0,1}, IRB index {2,3}, IRB index {4,5} and IRB index {6,7} are subhandover.

The following explanation takes an example where one PSCCH is configured to occupy 12 PRBs in the frequency domain.

Optionally, for subchannel-0, the PRBs that may be occupied by the PSCCH are 10 PRBs of IRB index0 plus 2 PRBs with the lowest frequency position of IRB index1, and if one UE uses subchannel-0 and subchannel-1 to transmit the PSCCH/PSCCH, the PSCCH occupies the time-frequency resources in subchannel-0, that is, occupies 10 PRBs of index0 plus 2 PRBs with the lowest frequency position of IRB index 1.

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

In the embodiments provided in the present application, the methods provided in the embodiments of the present application are introduced from the perspective of a network device and a terminal device, respectively. In order to implement the functions in the method provided by the embodiment of the present application, the network device and the terminal device may include a hardware structure and a software module, and the functions are implemented in the form of a hardware structure, a software module, or a hardware structure and a software module. Some of the above functions may be implemented by a hardware structure, a software module, or a hardware structure plus a software module.

Fig. 13 is a schematic structural diagram of a communication device 130 according to an embodiment of the present disclosure. The communication device 130 shown in fig. 13 may include a transceiver module 131 and a processing module 132. The transceiver module 131 may include a transmitting module and/or a receiving module, the transmitting module is used for implementing a transmitting function, the receiving module is used for implementing a receiving function, and the transceiver module 131 may implement a transmitting function and/or a receiving function.

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

The communication device 130 is a terminal apparatus:

a transceiver module 131, configured to transmit the PSCCH via the first set of PRBs, where the first set of IRBs includes one or more first IRBs, and the first set of PRBs includes one or more first PRBs;

a processing module 132, configured to determine, when the terminal device performs sidelink SL transmission, a first physical resource block PRB set in a first staggered resource block IRB set occupied by a PSCCH.

Optionally, the processing module 132 is further configured to determine a frequency domain position of the first IRB in an IRB included in a side row resource pool of a PSCCH and/or a physical side row shared channel PSCCH, where the SL transmission includes the PSCCH and/or PSCCH transmission.

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

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

Optionally, the processing module 132 is further configured to determine a number L of second IRBs included in a subchannel in the sidestream resource pool, and determine the K based on the L, where L is a positive integer.

Optionally, the processing module 132 is further configured to determine a first subchannel with a lowest or highest frequency domain position, where the side channel resource pool includes one or more subchannels; and selecting K first IRBs in the first sub-channel according to a set sequence.

Optionally, the processing module 132 is further configured to determine, from the one or more resource block sets, a first resource block set, where the side resource pool includes frequency-domain resources in one or more resource block sets; and selecting K first IRBs in the first resource block set.

Optionally, the processing module 132 is further configured to select K first IRBs by performing IRB selection according to a selection sequence of the first resource block set in two or more first resource block sets, where the number of the first resource block sets is two or more.

Optionally, the processing module 132 is further configured to determine the first set of resource blocks by pre-configuration or network device indication; or determining a priority of the one or more sets of resource blocks, the first set of resource blocks being determined based on the priority; or determining the first resource block set according to the height of the frequency domain starting position of the one or more resource block sets.

Optionally, the processing module 132 is further configured to determine that all PRBs on K of the first IRBs are the first PRB set; or determining a partial PRB on the first IRB 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 further configured to select, according to the frequency-domain position of the PRB on the first IRB, the N PRBs on the first IRB as the first PRB, where K is 1.

Optionally, the processing module 132 is further configured to rank the K first IRBs, where K is greater than 1; and selecting the first PRB from the K first IRBs according to the sorting until N first PRBs which need to be occupied by the PSCCH are selected, wherein the first PRB set comprises the N first PRBs.

Optionally, the processing module 132 is further 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 further configured to traverse K of the first IRBs according to the sorting; and for the current traversal to the first IRB, selecting the first PRB according to the frequency domain position of the PRB included in the first IRB until N first PRBs which need to be occupied by the PSCCH are selected from K first IRBs, and ending the traversal.

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

In the embodiment of the application, when terminal equipment transmits a sidelink SL, a first Physical Resource Block (PRB) set in a first staggered resource block (IRB) set occupied by a PSCCH is determined; transmitting the PSCCH through the first set of PRBs, the first set of PRBs comprising one or more first IRBs, the first set of PRBs comprising one or more first PRBs, a frequency-domain location of the PSCCH can be accurately determined when using a shared spectrum for sidelink communications.

The communication device 130 is a terminal apparatus:

a processing module 132, configured to determine, when a terminal device performs SL reception, a first PRB set in a first IRB set occupied by a PSCCH, where the first IRB set includes one or more first IRBs, and the first PRB set includes one or more first PRBs;

a transceiver module 131, configured to perform blind detection on the PSCCH in the frequency domain position of the first PRB.

Optionally, the processing module 132 is further configured to determine, in an IRB included in the sidestream resource pool, a frequency domain position of the first IRB, where the SL transmission includes the PSCCH and/or a physical sidestream shared channel PSCCH transmission.

Optionally, the processing module 132 is further configured to determine a first sub-channel with a lowest or highest frequency domain position, where the side resource pool includes one or more sub-channels; and selecting K first IRBs in the first sub-channel according to a set sequence.

Optionally, the processing module 132 is further configured to determine all PRBs on K of the first IRBs as the first PRB set; or determining a partial PRB on the first IRB as the first PRB set.

Optionally, the processing module 132 is further configured to rank the K first IRBs, where K is greater than 1;

and selecting the first PRB from the K first IRBs according to the sorting until N first PRBs which need to be occupied by the PSCCH are selected, wherein the first PRB set comprises the N first PRBs.

Optionally, the processing module 132 is further configured to traverse K first IRBs according to the sorting; and for the current traversal to the first IRB, selecting the first PRB according to the frequency domain position of the PRB included in the first IRB until N first PRBs which need to be occupied by the PSCCH are selected from K first IRBs, and ending the traversal.

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

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

Referring to fig. 14, fig. 14 is a schematic structural diagram of another communication device 140 according to an embodiment of the present disclosure. The communication device 140 may be a terminal device, a network device, a chip, a system-on-chip, a processor, or the like that supports the terminal device to implement the method, or a chip, a system-on-chip, a processor, or the like that supports the network device to implement the method. The apparatus may be configured to implement the method described in the method embodiment, and refer to the description in the method embodiment.

The communication device 140 may include one or more processors 141. Processor 141 may be a general purpose processor, or a special purpose processor, etc. For example, a baseband processor or a central processor. The baseband processor may be configured to process communication protocols and communication data, and the central processor may be configured to control a communication device (e.g., a base station, a baseband chip, a terminal device chip, a DU or CU, etc.), execute a computer program, and process data of the computer program.

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

Optionally, the communication device 140 may further include a transceiver 145 and an antenna 146. The transceiver 145 may be referred to as a transceiving unit, a transceiver, or a transceiving circuit, etc., for implementing a transceiving function. The transceiver 145 may include a receiver, which may be referred to as a receiver or a receiving circuit, etc., for implementing a receiving function; the transmitter may be referred to as a transmitter or a transmission circuit, etc. for implementing the transmission function.

Optionally, one or more interface circuits 147 may also be included in communications device 140. The interface circuit 147 is used to receive code instructions and transmit them to the processor 141. Processor 141 executes the code instructions to cause communication device 140 to perform the methods described in the above-described method embodiments.

In one implementation, a transceiver may be included in processor 141 to implement receive and transmit functions. The transceiver may be, for example, a transceiver circuit, or an interface circuit. The transmit and receive circuitry, interfaces or interface circuitry used to implement the receive and transmit functions may be separate or integrated. The transceiver circuit, the interface circuit or the interface circuit may be used for reading and writing code/data, or the transceiver circuit, the interface circuit or the interface circuit may be used for transmitting or transferring signals.

In one implementation, the processor 141 may store a computer program 143, and the computer program 143 running on the processor 141 may cause the communication apparatus 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 circuitry that may implement the functionality of transmitting or receiving or communicating in the foregoing method embodiments. The processors and transceivers described herein may be implemented on Integrated Circuits (ICs), analog ICs, Radio Frequency Integrated Circuits (RFICs), mixed signal ICs, Application Specific Integrated Circuits (ASICs), Printed Circuit Boards (PCBs), electronic devices, and the like. The processor and transceiver may also be fabricated using various IC process technologies, such as Complementary Metal Oxide Semiconductor (CMOS), N-type metal oxide semiconductor (NMOS), P-type metal oxide semiconductor (PMOS), Bipolar Junction Transistor (BJT), bipolar CMOS (bicmos), silicon germanium (SiGe), gallium arsenide (GaAs), and the like.

The communication apparatus in the above description of the embodiment may be a transmitting device or a receiving device (such as the receiving device in the foregoing embodiment of the method), but the scope of the communication apparatus described in the present application is not limited thereto, and the structure of the communication apparatus may not be limited by fig. 14. The communication means may be a stand-alone device or may be part of a larger device. For example, the communication means may be:

(1) a stand-alone integrated circuit IC, or chip, or system-on-chip or subsystem;

(2) a set of one or more ICs, which optionally may also include storage means for storing data, computer programs;

(3) an ASIC, such as a Modem (Modem);

(4) a module that may be embedded within other devices;

(5) receivers, terminal devices, smart terminal devices, cellular phones, wireless devices, handsets, mobile units, in-vehicle devices, network devices, cloud devices, artificial intelligence devices, and the like;

(6) others, and so forth.

For the case that the communication device may be a chip or a system of chips, see 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 the processors 121 may be one or more, and the number of the interfaces 152 may be more.

Optionally, the chip further comprises a memory 153, the memory 153 being adapted to store necessary computer programs and data.

The chip is used for realizing the functions of any one of the method embodiments when being executed.

Those skilled in the art will also appreciate that the various illustrative logical blocks and steps (step) set forth in the embodiments of the present application may be implemented in electronic hardware, computer software, or combinations of both. Whether such functionality is implemented as hardware or software depends upon the particular application and design requirements of the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the embodiments of the present application.

An embodiment of the present application further provides a PSCCH transmission communication system, where the system includes the communication apparatus in the foregoing embodiment in fig. 13 as a terminal device, or the system includes the communication apparatus in the foregoing embodiment in fig. 14 as a terminal device.

The present application also provides a readable storage medium having stored thereon instructions which, when executed by a computer, implement the functionality of any of the above-described method embodiments.

The present application also provides a computer program product which, when executed by a computer, implements the functionality of any of the above-described method embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, 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. The procedures or functions described in accordance with the embodiments of the present application are generated in whole or in part when the computer program is loaded and executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer program can be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer program can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more available media. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a Digital Video Disk (DVD)), or a semiconductor medium (e.g., a Solid State Disk (SSD)), among others.

Those of ordinary skill in the art will understand that: various numbers of the first, second, etc. mentioned in this application are only for convenience of description and distinction, and are not used to limit the scope of the embodiments of this application, and also represent a sequence order.

At least one of the present application may also be described as one or more, and a plurality may be two, three, four or more, and the present application is not limited thereto. In the embodiment of the present application, for a technical feature, the technical features in the technical feature are distinguished by "first", "second", "third", "a", "B", "C", and "D", etc., where the technical features described in "first", "second", "third", "a", "B", "C", and "D" are not in a sequential order or a size order.

The correspondence shown in the tables in the present application may be configured or predefined. The values of the information in each table are merely examples, and may be configured as other values, which is not limited in the present application. When the correspondence between the information and each parameter is configured, it is not always necessary to configure all the correspondences indicated in each table. For example, in the table in the present application, the correspondence shown in some rows may not be configured. For another example, appropriate modification adjustments, such as splitting, merging, etc., can be made based on the above tables. The names of the parameters in the tables may be other names understandable by the communication device, and the values or the expression of the parameters may be other values or expressions understandable by the communication device. When the above tables are implemented, other data structures may be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables may be used.

Predefinition in this application may be understood as defining, predefining, storing, pre-negotiating, pre-configuring, curing, or pre-firing.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A method for transmitting a Physical Sidelink Control Channel (PSCCH), the method being performed by a terminal device and comprising:

when terminal equipment transmits a side link SL, determining a first Physical Resource Block (PRB) set in a first staggered resource block (IRB) set occupied by a PSCCH;

transmitting the PSCCH through the first set of PRBs, the first set of IRBs comprising one or more first IRBs, the first set of PRBs comprising one or more first PRBs.

2. The method of claim 1, wherein determining the first set of staggered resource blocks (IRBs) occupied by the PSCCH comprises:

determining a frequency domain position of the first IRB in an IRB included in a side row resource pool of a PSCCH and/or a physical side row shared channel PSSCH, wherein the SL transmission includes the PSCCH and/or PSSCH transmission.

3. The method of claim 2, further comprising:

determining a number K of the first IRBs included in the first set of IRBs, the K being a positive integer.

4. The method of claim 3, wherein determining the number K of the first IRBs comprises:

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

determining the number M of PRBs contained in an IRB;

determining the K based on the N and the M, wherein the N and the M are positive integers.

5. The method of claim 3, wherein determining the first number K of IRBs comprises:

determining the number L of second IRBs contained in a subchannel in a sidestream resource pool, and determining the K based on the L, wherein the L is a positive integer.

6. The method of claim 2, wherein determining the frequency domain location of the first IRB comprises:

the side communication resource pool comprises one or more sub-channels, and a first sub-channel with the lowest or the highest frequency domain position is determined;

and selecting K first IRBs in the first sub-channel according to a set sequence.

7. The method of claim 2, wherein determining the frequency domain location of the first IRB comprises:

the side-line resource pool comprises frequency domain resources in one or more resource block sets, and a first resource block set is determined from the one or more resource block sets;

and selecting K first IRBs in the first resource block set.

8. The method of claim 7, further comprising:

the number of the first resource block sets is two or more, and IRB selection is performed in the two or more first resource block sets according to the selection sequence of the first resource block sets to select K first IRBs.

9. The method of claim 7, wherein determining the first set of resource blocks comprises:

determining, by pre-configuration or network device indication, the first set of resource blocks; or

Determining a priority of the one or more sets of resource blocks, the first set of resource blocks being determined based on the priority; or

And determining the first resource block set according to the height of the frequency domain starting position of the one or more resource block sets.

10. The method of claim 1, wherein the determining a first set of Physical Resource Blocks (PRBs) on the first IRB occupied by the PSCCH comprises:

determining all PRBs on the K first IRBs as the first set of PRBs; or alternatively

Determining a partial PRB on the first IRB as the first set of PRBs.

11. The method of claim 10, wherein 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.

12. The method of claim 10, further comprising:

and selecting N PRBs on the first IRB as the first PRB according to the frequency domain position of the PRB on the first IRB, wherein the K is 1.

13. The method of claim 10, wherein the determining that the partial PRBs on the first IRB are the first set of PRBs comprises:

when the K is larger than 1, sequencing the K first IRBs;

14. The method according to claim 13, wherein said ordering K of said first IRBs comprises,

and sorting according to the frequency domain position of the first IRB or the index number of the IRB.

15. The method of claim 13, wherein selecting the first PRB from the K first IRBs according to the ordering comprises,

traversing K first IRBs according to the ordering;

and for the current traversal to the first IRB, selecting the first PRB according to the frequency domain position of the PRB included in the first IRB until N first PRBs which need to be occupied by the PSCCH are selected from K first IRBs, and ending the traversal.

16. The method of claim 10, wherein the determining the partial PRBs on the first IRB as the first set of PRBs comprises:

and when K is greater than 1, selecting the first PRB according to the frequency-domain positions of the PRBs in the K first IRBs until the N first PRBs are selected, where the first PRB set includes the N first PRBs.

17. A method of receiving a PSCCH, performed by a terminal device, the method comprising:

when terminal equipment receives SL, determining a first PRB set in a first IRB set occupied by PSCCH, wherein the first IRB set comprises one or more first IRBs and the first PRB set comprises one or more first PRBs;

and performing blind detection on the PSCCH at the frequency domain position of the first PRB.

18. The method of claim 17, wherein determining the first set of IRBs occupied by the PSCCH comprises:

determining a frequency domain position of the first IRB in an IRB included in the sidelink resource pool, wherein the SL transmission comprises the PSCCH and/or a physical sidelink shared channel PSSCH transmission.

19. The method of claim 18, further comprising:

20. The method of claim 19, wherein determining the number K of the first IRBs comprises:

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

determining the number M of PRBs contained in an IRB;

21. The method of claim 19, wherein determining the number K of the first IRBs comprises:

22. The method of claim 18, wherein determining the frequency domain location of the first IRB comprises:

23. The method of claim 18, wherein determining the frequency domain location of the first IRB comprises:

and selecting K first IRBs in the first resource block set.

24. The method of claim 23, further comprising:

25. The method of claim 23, wherein determining the first set of resource blocks comprises:

26. The method of claim 17, wherein the determining a first set of Physical Resource Blocks (PRBs) on the first IRB occupied by the PSCCH comprises:

determining all PRBs on the K first IRBs as the first set of PRBs; or

Determining a partial PRB on the first IRB as the first set of PRBs.

27. The method of claim 26, wherein the number of the first PRBs that the PSCCH needs to occupy is a positive integer multiple of the number of PRBs included within one IRB.

28. The method of claim 26, further comprising:

29. The method of claim 26, wherein the determining the partial PRBs on the first IRB as the first set of PRBs comprises:

when the K is larger than 1, sequencing the K first IRBs;

and selecting the first PRB from the K first IRBs according to the ordering until N first PRBs required to be occupied by the PSCCH are selected, wherein the first PRB set comprises the N first PRBs.

30. The method according to claim 29, wherein said ordering K of said first IRBs comprises,

31. The method of claim 29, wherein selecting the first PRB from the K first IRBs according to the ordering comprises,

traversing K first IRBs according to the ordering;

32. The method of claim 29, wherein the determining that the partial PRBs on the first IRB are the first set of PRBs comprises:

and when the K is greater than 1, selecting the first PRB according to the frequency domain positions of the PRBs in the K first IRBs until the N first PRBs are selected, wherein the first PRB set comprises the N first PRBs.

33. A communications apparatus, comprising:

the processing module is used for determining a first Physical Resource Block (PRB) set in a first staggered resource block (IRB) set occupied by a PSCCH (pseudo-random channel) when terminal equipment transmits a side-link (SL);

a transceiver module, configured to transmit the PSCCH through the first set of PRBs, where the first set of IRBs includes one or more first IRBs, and the first set of PRBs includes one or more first PRBs.

34. A communications apparatus, comprising:

the processing module is used for determining a first PRB set in a first IRB set occupied by a PSCCH when a terminal device receives a SL, wherein the first IRB set comprises one or more first IRBs and comprises one or more first PRBs;

and the transceiver module is used for performing blind detection on the PSCCH at the frequency domain position of the first PRB.

35. A communications apparatus, comprising a processor and a memory, the memory having stored therein a computer program, the processor executing the computer program stored in the memory to cause the apparatus to perform the method of any of claims 1 to 16.

36. A communication apparatus, characterized in that the apparatus comprises a processor and a memory, in which a computer program is stored, the processor executing the computer program stored in the memory to cause the apparatus to perform the method as claimed in claims 17 to 32.

37. A communications apparatus, comprising: a processor and an interface circuit;

the interface circuit is used for receiving code instructions and transmitting the code instructions to the processor;

the processor to execute the code instructions to perform the method of any one of claims 1 to 16.

38. A communications apparatus, comprising: a processor and interface circuitry;

the processor for executing the code instructions to perform the method as claimed in claims 17 to 32.

39. A computer-readable storage medium storing instructions that, when executed, cause the method of any of claims 1-16 to be implemented.

40. A computer-readable storage medium storing instructions that, when executed, cause the method as recited in claims 17-32 to be implemented.