WO2023185527A1

WO2023185527A1 - Channel transmission method, communication apparatus, communication device, storage medium, and product

Info

Publication number: WO2023185527A1
Application number: PCT/CN2023/082541
Authority: WO
Inventors: 贺海港; 卢有雄; 邢卫民; 苗婷
Original assignee: 中兴通讯股份有限公司
Priority date: 2022-03-31
Filing date: 2023-03-20
Publication date: 2023-10-05
Also published as: CN115884385A

Abstract

Provided in the embodiments of the present application is a channel transmission method, which is applied to a time slot for carrying a physical sidelink feedback channel (PSFCH) resource. The method comprises: determining that a time slot comprises M groups of PSFCHs, M being an integer greater than or equal to 2, wherein each group of PSFCHs comprises at least one PSFCH; according to target priority values of the PSFCHs in the M groups of PSFCHs, determining N PSFCHs, N being an integer greater than or equal to 2; and transmitting the N PSFCHs.

Description

Channel transmission method, communication device, communication equipment, storage medium and product

Cross-references to related applications

This application is filed based on a Chinese patent application with application number 202210334426.5 and a filing date of March 31, 2022, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application as a reference.

Technical field

The embodiments of the present application relate to the field of communication technology, and specifically, to a channel transmission method, a communication device, a communication equipment, a computer storage medium, and a computer program product.

Background technique

In communication systems, spectrum resources need to be used to transmit services. Spectrum resources include licensed spectrum and unlicensed spectrum. Unlicensed spectrum is unlicensed, and different communication systems can transmit and compete for resources on the unlicensed spectrum.

Side link (also called side/direct/through link, Sidelink) communication refers to communication directly between two or more devices, such as two or more user equipment (User Equipment, UE). Typical applications of edge link communication systems include Device To Device (D2D) communication and Vehicle To Everything (V2X) communication.

In related technologies, there is side link design for licensed spectrum, while less consideration is given to side link design for unlicensed spectrum. How to design the side links of unlicensed spectrum is an issue that needs to be discussed and solved urgently.

Contents of the invention

Embodiments of the present application provide a channel transmission method, communication device, communication equipment, computer storage media, and computer program products for implementing Sidelink's PSFCH transmission or reception in an unlicensed spectrum scenario.

In a first aspect, embodiments of the present application provide a channel transmission method, including: applying to time slots carrying physical side link feedback channel PSFCH resources, wherein the method includes: determining that the time slots include M groups of PSFCHs, M is an integer greater than or equal to 2, wherein each group of PSFCHs includes at least one PSFCH; N PSFCHs are determined according to the target priority value of the PSFCHs in the M groups of PSFCHs, and N is greater than or equal to An integer of 2; transmit the N PSFCHs.

In a second aspect, an embodiment of the present application provides a communication device, including: a PSFCH resource group determination module configured to determine that the time slot includes M groups of PSFCHs, where M is an integer greater than or equal to 2, wherein each group The PSFCH includes at least one PSFCH; a PSFCH determination module configured to determine N PSFCHs according to the target priority value of the PSFCH in the M groups of PSFCHs; where N represents the number of PSFCHs that need to be transmitted , N is an integer greater than or equal to 2; the PSFCH transmission module is configured to transmit the N PSFCHs.

In a third aspect, embodiments of the present application provide a communication device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor; when the processor executes the computer program, the first The channel transmission method described in this aspect.

In a fourth aspect, embodiments of the present application provide a computer-readable storage medium, including: the computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to execute the channel as described in the first aspect. Transmission method.

In a fifth aspect, embodiments of the present application provide a computer program product, including: a computer program or computer instructions, Wherein, the computer program or the computer instructions are stored in a computer-readable storage medium, a processor of the computer device reads the computer program or the computer instructions from the computer-readable storage medium, and the processor executes The computer program or the computer instruction causes the computer device to execute the channel transmission method as described in the first aspect.

Description of drawings

Figure 1 is a schematic diagram of the Sidelink communication system in the embodiment of the present application;

Figure 2 is a schematic diagram of a time slot structure supporting multiple PSFCH transmission opportunities involved in an embodiment of the present application;

Figure 3 is a flow chart of a channel transmission method provided by an embodiment of the present application;

Figure 4 is a flow chart of a channel transmission method provided by an embodiment of the present application;

Figure 5 is a flow chart of a channel transmission method provided by an embodiment of the present application;

Figure 6 is a schematic structural diagram of a PSFCH resource subset provided by an embodiment of the present application;

Figure 7 is a schematic structural diagram of a PSFCH resource subset provided by another embodiment of the present application;

Figure 8 is a schematic structural diagram of a PSFCH resource subset provided by another embodiment of the present application;

Figure 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

Figure 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

It should be noted that although the functional modules are divided in the device schematic diagram and the logical sequence is shown in the flow chart, in some cases, the modules can be divided into different modules in the device or the order in the flow chart can be executed. The steps shown or described. The terms "first", "second", etc. in the description, claims, and above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific sequence or sequence.

In the description of the embodiments of this application, unless otherwise explicitly limited, words such as setting, installation, and connection should be understood in a broad sense. Those skilled in the art can reasonably determine the meaning of the above words in the embodiments of this application based on the specific content of the technical solution. specific meaning. In the embodiments of this application, words such as "further", "exemplarily" or "optionally" are used as examples, illustrations or illustrations, and should not be interpreted as being more preferable or better than other embodiments or designs. Advantages. The use of the words "further," "exemplarily," or "optionally" is intended to present the relevant concepts in a concrete manner.

In the edge link communication system, when there is business between terminal devices that needs to be transmitted, the business between the terminal devices does not pass through the network side, that is, it does not go through the forwarding of the cellular link between the terminal device and the base station, but is directly transmitted by the data. The source terminal device transmits to the target terminal device through the side link. This mode of direct communication between terminal devices has characteristics that are obviously different from the traditional cellular system communication mode.

Typical applications of side link communication include Device-to-Device (D2D) communication and Vehicle to Everything (V2X) communication. Among them, the Internet of Vehicles (V2X) communication includes Vehicle to Vehicle (V2V), Vehicle to Pedestrian (V2P), and Vehicle to Infrastructure (V2I). For short-range communication users who can apply side-link communication, side-link communication not only saves wireless spectrum resources, but also reduces the data transmission pressure of the core network, reduces system resource occupation, increases the spectrum efficiency of the cellular communication system, and reduces communication delay and save network operation costs to a great extent.

Figure 1 is a schematic diagram of the Sidelink communication system in the embodiment of the present application. As shown in the figure, the terminal device 101 and the terminal device 102 can transmit directly through the side link without passing through the network side device 200, and the two terminal devices 101 and 102 can also transmit messages with the network side device 200 respectively.

The network side device may be a device on the access network side used to support terminal access to the wireless communication system. For example, it may be a next generation base station (next generation NodeB, gNB) or a transmitting and receiving point (TRP, Transmission Reception Point), relay node (Relay Node), access point (AccessPoint, AP), roadside device (Road Site Unit, RSU), etc.

The terminal device in the figure can be a device that provides voice or data connectivity to users. For example, it can also be called UE, mobile station, subscriber unit, station (STAtion) or terminal (TE, Terminal). Equipment) etc. The terminal device can be a cellular phone (cellular phone), personal digital assistant (PDA, Personal Digital Assistant), wireless modem (modem), handheld device (handheld), laptop computer (laptop computer), cordless phone (cordless phone), Wireless Local Loop (WirelessLocal Loop, WLL) station or tablet computer, etc. With the development of wireless communication technology, devices that can access the wireless communication system, communicate with the network side of the wireless communication system, or communicate with other devices through the wireless communication system can be terminal devices in the embodiments of the present application. For example, terminals and cars in smart transportation, household equipment in smart homes, power meter reading instruments, voltage monitoring instruments, environmental monitoring instruments in smart grids, video monitoring instruments in smart security networks, cash registers, etc. Terminal equipment can be static or mobile. In order to facilitate the following description, the user equipment UE is taken as an example for explanation.

3GPP is developing a new radio (NR)-based side link transmission communication technology standard in Release 16 (referred to as R16) to support advanced application scenarios such as platooning, extended sensors, advanced driving, and remote driving. In order to support new application requirements, higher reliability, lower latency, greater density and higher speed network connections are required. Therefore, a new wireless air interface design is introduced, and a new physical side link feedback channel ( Physical Sidelink Feedback Channel, PSFCH).

The NR R16 side link supports configuring a side link carrier, and supports configuring a side link bandwidth part (Bandwidth part, BWP) on the carrier. Furthermore, multiple resource pools can be configured and activated for the UE on the BWP. For each edge link resource pool, PSFCH resources can be configured. Specifically, the PSFCH cycle N is configured. The cycle N indicates that every N edge link time slots in the resource pool correspond to one PSFCH time slot. The specific resource location of the PSFCH is predefined. The PSFCH content contains one-bit Hybrid Automatic Repeat Request (HARQ) acknowledgment (ACK) and non-acknowledgment (Negative ACK, NACK) information in a resource block. Feedback from the receiving terminal device to the sending terminal device on the bearer side link can be in the form of ACK/NACK or NACK-only.

In the unlicensed spectrum, only the channel with successful Listen Before Talk (LBT) can transmit, that is, the communication node needs to compete for resources. Only when the time-frequency resource competition is successful, the communication node can transmit on the time-frequency resource. carry out information transmission. More specifically, in the LBT mechanism, the communication node performs the channel access process (monitoring whether the channel is idle) before transmitting information. Only when the channel is idle can the communication node transmit information.

For the current Sidelink design, 3GPP only considers the side link Intelligent Transport System (ITS) spectrum and the licensed spectrum allocated to network operators, but has not yet addressed the side link as unlicensed spectrum with multiple PSFCH transmissions. Timing of Sidelink's design.

If multiple PSFCH transmission opportunities are supported, a time slot containing PSFCH resources contains M PSFCH resource subsets, where M is an integer greater than 1, and the m-th resource subset corresponds to the m-th PSFCH transmission opportunity. Figure 2 is a schematic diagram of a time slot structure that supports multiple PSFCH transmission opportunities according to an embodiment of the present application. As shown in the figure, taking M=2 as an example, one PSSCH is mapped to two PSFCHs, and the two mapped PSFCHs respectively correspond to the first PSFCH transmission opportunity and the second PSFCH transmission opportunity. More specifically, taking the time slot n+2 containing the PSSCH as an example, the first PSFCH transmission opportunity mapped by the time slot n+2 is located in the PSFCH resource subset 211 in the time slot n+7, and the time slot n The second PSFCH transmission opportunity mapped by +2 is located in the PSFCH resource subset 222 in slot n+11. Among them, taking the time slot n+7 containing PSFCH resources as an example, each PSFCH resource in the PSFCH resource subset 211 in time slot n+7 corresponds to the first transmission opportunity of a PSSCH. Each PSFCH resource in the PSFCH resource subset 212 in slot n+7 corresponds to the second transmission opportunity of a PSSCH.

Due to the limited transmission capability of the UE, in a PSFCH-resourced time slot, a UE can only send N _{sch, Tx, PSFCH} PSFCHs, or can only receive N _{sch, RX, PSFCH} PSFCHs. One time slot contains multiple PSFCH resource subsets. In the embodiment corresponding to Figure 2, taking time slot n+7 as an example, one time slot contains two PSFCH resource subsets, namely PSFCH resource subset 211 and The PSFCH resource subset is 212, and the number of PSFCHs to be sent by the UE is greater than N _sch,TX,PSFCH , or the number of PSFCHs to be received by the UE is greater than N _sch,TX,PSFCH . Therefore, it is necessary to select from the PSFCHs to be sent or received. Make selections and send or receive these selected PSFCHs.

Based on this, the embodiment of the present application proposes a channel transmission method that supports the selection of PSFCH transmission or the selection of PSFCH reception when the side link is an unlicensed spectrum and there are multiple PSFCH transmission opportunities, and these are The selected PSFCH is sent and received.

Figure 3 is a flow chart of the channel transmission method provided by the embodiment of the present application, which at least includes step S1000, step S2000, and S3000, specifically as follows:

Step S1000: Determine that the time slot includes M groups of PSFCHs, where M is an integer greater than or equal to 2, where each group of PSFCHs includes at least one PSFCH.

It should be noted that one PSSCH involved in the embodiment of this application is mapped to M PSFCH transmission opportunities, where M is greater than or equal to 2, so each time slot includes at least two or more groups of PSFCHs, and each group of PSFCHs has One or more PSFCH.

Step S2000: Determine N PSFCHs based on the target priority values of the PSFCHs in the M groups of PSFCHs, where N represents the number of PSFCHs that need to be transmitted, and N is an integer greater than or equal to 2.

It can be understood that since the UE needs to select each PSFCH in the M groups of PSFCHs to have a target priority value, and this target priority value reflects the priority level of the corresponding PSFCH during transmission. In the case where the following two embodiments correspond, the UE determines N PSFCHs according to the target priority value of the PSFCH, where N is an integer greater than or equal to 2.

Step S3000: Transmit N PSFCHs.

The selected N PSFCHs are transmitted.

Those skilled in the art can understand that for a UE that sends PSFCH, the above-mentioned PSFCH transmission timing corresponds to the PSFCH sending timing; for a UE that receives PSFCH, the above-mentioned PSFCH transmission timing corresponds to the PSFCH receiving timing. It can be understood that the solution provided by the embodiment of the present application can support various situations such as channel transmission and reception.

Figure 4 is a flow chart of a channel transmission method provided by an embodiment of the present application. As shown in Figure 4, it specifically illustrates the UE pair The channel selection and transmission process may include but is not limited to step S2110 and step S3100.

In this embodiment, M=2, one PSSCH is mapped to two PSFCH transmission opportunities, forming PSFCH resource subset 1 and PSFCH resource subset 2. PSFCH resource subset 1 contains PSFCH resources corresponding to Q1 PSFCHs to be sent. Each of the Q1 PSFCHs to be sent corresponds to the first PSFCH transmission of the UE. PSFCH resource subset 2 contains PSFCH resources corresponding to Q2 PSFCHs to be sent. Each of the Q2 PSFCHs to be sent corresponds to the second PSFCH transmission of the UE. Among them, the Q1 PSFCHs to be sent included in the PSFCH resource subset 1 all correspond to the first PSFCH transmission of the UE, and the Q1 PSFCHs to be sent belong to the first PSFCH transmission opportunity; the Q2 PSFCHs included in the PSFCH resource subset 2 are to be sent. The sending of PSFCH corresponds to the second PSFCH sending by the UE, and the Q2 PSFCHs to be sent belong to the second PSFCH sending opportunity.

Step S2110: Determine N PSFCHs based on the Q1 target priority values corresponding to the Q1 PSFCHs to be transmitted in the first group of PSFCHs to be transmitted, where N represents the number of PSFCHs that need to be transmitted.

It can be understood that in this case, N <= Q1, so you only need to select in PSFCH resource subset 1 to get a sufficient number of PSFCHs, that is, get N PSFCHs, without selecting in other PSFCH resource subsets. Make your selections centrally.

Step S3100: Transmit N PSFCHs.

The selected N PSFCHs are transmitted.

Those skilled in the art can understand that for a UE that sends PSFCH, the above-mentioned PSFCH transmission timing corresponds to the PSFCH sending timing; for a UE that receives PSFCH, the above-mentioned PSFCH transmission timing corresponds to the PSFCH receiving timing. The solution provided by the embodiment of this application can support both sending and receiving situations.

Figure 5 is a flow chart of a channel transmission method provided by an embodiment of the present application. As shown in Figure 5 , the channel selection and transmission process by the UE are specifically described, which may include but are not limited to step S2120, step S2220, and step 3100.

In this embodiment, M=2, one PSSCH is mapped to two PSFCH transmission opportunities, forming PSFCH resource subset 1 and PSFCH resource subset 2. PSFCH resource subset 1 contains PSFCH resources corresponding to Q1 PSFCHs to be sent. Each of the Q1 PSFCHs to be sent corresponds to the first PSFCH transmission of the UE. PSFCH resource subset 2 contains PSFCH resources corresponding to Q2 PSFCHs to be sent. Each of the Q2 PSFCHs to be sent corresponds to the second PSFCH transmission of the UE. Among them, PSFCH resource subset 1, among the corresponding Q1 PSFCHs to be sent, Q1' PSFCHs to be sent belong to the first PSFCH transmission opportunity, and Q1-Q1' PSFCHs to be sent belong to the second PSFCH transmission opportunity. PSFCH resource subset 2, among the corresponding Q2 PSFCHs to be sent, each PSFCH to be sent belongs to the second PSFCH sending opportunity.

It is worth mentioning that in PSFCH resource subset 1, the reason why some PSFCHs belong to the second PSFCH transmission opportunity is because they were not sent at the first PSFCH transmission opportunity, so although they belong to the first PSFCH transmission , but it does not correspond to its first PSFCH transmission timing. The reason for not sending is that the LBT channel monitoring failed, that is, the LBT monitoring result before sending was that the channel is busy.

Step S2120: Determine N1 PSFCHs based on the Q1 target priority values corresponding to the Q1 PSFCHs to be transmitted in the first group of PSFCHs to be transmitted, where N1 is a positive integer not greater than N.

Step S2220: After determining N1 PSFCHs, determine N2 PSFCHs based on the Q2 target priority values corresponding to the Q2 PSFCHs to be transmitted in the second group of PSFCHs to be transmitted, N2 is a positive integer not greater than N, N1 and N2 The sum is equal to N.

It can be understood that in this case, N>Q1, so only selecting in PSFCH resource subset 1 cannot obtain a sufficient number of PSFCHs, that is, N PSFCHs are obtained, so it is necessary to select in other PSFCH resource subsets. choose. In the embodiment corresponding to Figure 5, there are two PSFCH resource subsets, so it is necessary to select again in PSFCH resource subset 2.

It should be noted that in some embodiments, M=3 or even M=4, so there are PSFCH resource subset 3 and PSFCH resource subset 4. In this case, after PSFCH resource subset 2 is selected, If the number of N1+N2 is still less than N, the selection continues in PSFCH resource subset 3 and PSFCH resource subset 4 at a time until the number of selected PSFCHs to be transmitted is equal to N. Therefore, this corresponds to the situation where the sum of N1 and N2 is less than N. Those skilled in the art can understand that the channel selection and transmission methods provided by the embodiments of the present application can support any situation where M is greater than or equal to 2.

Step S3100: Transmit N PSFCHs.

The selected N PSFCHs are transmitted.

Figure 6 is a schematic structural diagram of a PSFCH resource subset provided by an embodiment of the present application.

As shown in Figure 6, one PSSCH is mapped to M=2 PSFCH transmission opportunities. Taking the PSSCH located in slot n+2 as an example, the first PSFCH transmission opportunity mapped by the PSSCH is located in slot n+7, and the second PSFCH transmission opportunity is located in slot n+11. Each time slot containing PSFCH resources includes M=2 PSFCH resource subsets, corresponding to the first PSFCH transmission opportunity and the second PSFCH transmission opportunity respectively. Taking time slot n+11 as an example, it contains M=2 PSFCH resource subsets, PSFCH resource subset 321 and PSFCH resource subset 322. Each PSFCH resource in PSFCH resource subset 321 corresponds to the first PSFCH transmission opportunity. Each PSFCH resource in the PSFCH resource subset 322 corresponds to the second PSFCH transmission opportunity. In order to facilitate observation and understanding, the first transmission opportunity and the second transmission opportunity are marked with different shading methods.

The PSFCH resource subset 321 includes PSFCH resources corresponding to Q1 PSFCHs to be sent. Each of the Q1 PSFCHs to be sent corresponds to the first PSFCH transmission of the UE.

The PSFCH resource subset 322 includes PSFCH resources corresponding to Q2 PSFCHs to be sent, and each of the Q2 PSFCHs to be sent corresponds to the second PSFCH transmission of the UE.

PSFCH resource subset 321, among the corresponding Q1 PSFCHs to be sent, Q1' PSFCHs to be sent belong to the first PSFCH transmission opportunity, and Q1-Q1' PSFCHs to be sent belong to the second PSFCH transmission opportunity.

It is worth noting that in the PSFCH resource subset 321, the reason why some PSFCHs belong to the second PSFCH transmission opportunity is because they were not sent at the first PSFCH transmission opportunity, so although they belong to the first PSFCH sent, but does not correspond to its first PSFCH sending opportunity. The reason for not sending is that the LBT channel monitoring failed, that is, the LBT monitoring result before sending was that the channel is busy.

PSFCH resource subset 322, among the corresponding Q2 PSFCHs to be sent, each PSFCH to be sent belongs to the second PSFCH sending opportunity.

Those skilled in the art can understand that for a UE that sends PSFCH, the above-mentioned PSFCH transmission timing corresponds to the PSFCH sending timing; for a UE that receives PSFCH, the above-mentioned PSFCH transmission timing corresponds to the PSFCH reception timing. Closing time.

In time slot n+11, the UE needs to select N _Tx,PSFCH PSFCHs among Q=Q1+Q2 PSFCHs to be sent for transmission, where N _Tx,PSFCH <=Q1+Q2.

In this embodiment, the basic principle for selecting N _Tx,PSFCH PSFCHs is: the PSFCH resources are selected first in the PSFCH resource subset 321, and then the PSFCH resources are selected in the second PSFCH resource subset 322 until N is selected. _Tx,PSFCH PSFCH resources.

To specifically select the specific PSFCH to be sent in each resource subset, the following specific principles need to be followed: In a PSFCH resource subset, select N _m PSFCHs with the lowest priority value, where N _m is a positive integer.

In this embodiment, the first PSFCH resource subset corresponds to the PSFCH resource subset 321 in Figure 6, and the second PSFCH resource subset corresponds to the PSFCH resource subset 322 in Figure 6. The priority value of a PSFCH is the priority value indicated by a Sidelink Control Information (SCI) format. Each PSFCH has a corresponding SCI. It can be understood that the higher the priority, the more priority should be sent, and the lower the priority, the lower the order of sending. The priority value is a value that can reflect the level of priority. In some embodiments, the smaller the priority value, the higher the priority and should be sent first; the larger the priority value, the lower the priority and the priority should be sent. sent later. In other embodiments, a larger priority value indicates a higher priority and should be sent first; a smaller priority value indicates a lower priority and should be sent later. In order to be compatible with existing standard protocols, this application adopts the method that the smaller the priority value indicates the higher the priority as an example.

It should be noted that a PSFCH and a PSSCH have a corresponding mapping relationship. For example, in Figure 6, a PSFCH in slot n+11 and a PSFCH in slot {n+6,n+7,n+8,n +9} is associated with the PSSCH on a slot. A SCI indicates the time-frequency resource location of the associated PSSCH, and the priority value of the PSFCH is the priority value indicated by the SCI.

Based on the above principles, when N _Tx,PSFCH <= Q1, the UE sends N _{Tx,PSFCH PSFCHs} with the lowest PSFCH priority value in the PSFCH resource subset 321.

Based on the above principles, when N _Tx,PSFCH >Q1, after the UE selects the PSFCH with the lowest Q1 PSFCH priority value in the PSFCH resource subset 321, the UE selects N _Tx,PSFCH - in the PSFCH resource subset 322. Q1 PSFCH with the lowest priority value.

After the selection is completed, the UE sends the _NTx,PSFCH PSFCH selected above.

It should be noted that for the situation where M>2, that is, when one PSSCH is mapped to 3 or even 4 PSFCH transmission opportunities, the method provided in the embodiment of the present application is still applicable. In this case, the PSFCH with the smallest priority value is selected for transmission among the PSFCHs to be sent in each PSFCH resource subset in turn, until a total of N _Tx,PSFCH PSFCHs are selected.

Those skilled in the art can understand that selecting _{NRx, PSFCH} for reception is a similar process to selecting NTx _{, PSFCH} for transmission. The selection of NTx _{, PSFCH} PSFCH follows the above basic principles and specific principles.

Figure 7 is a schematic structural diagram of a PSFCH resource subset provided by another embodiment of the present application.

As shown in Figure 7, one PSSCH is mapped to M=2 PSFCH transmission opportunities. Taking the PSSCH located in slot n+2 as an example, the first PSFCH transmission opportunity mapped by the PSSCH is located in slot n+7, and the second PSFCH transmission opportunity is located in slot n+11. Each time slot containing PSFCH resources includes M=2 PSFCH resource subsets, corresponding to the first PSFCH transmission opportunity and the second PSFCH transmission opportunity respectively. Taking slot n+11 as an example, it contains M=2 PSFCHs. Resource subsets, PSFCH resource subset 421 and PSFCH resource subset 422. Each PSFCH resource in the PSFCH resource subset 421 corresponds to the second PSFCH transmission opportunity, and each PSFCH resource in the PSFCH resource subset 422 corresponds to the PSFCH first transmission opportunity. transmission time. In order to facilitate observation and understanding, the first transmission opportunity and the second transmission opportunity are marked with different shading methods. Those skilled in the art can understand that, for a UE that sends PSFCH, the above-mentioned PSFCH transmission timing corresponds to the PSFCH sending timing. For a UE that receives PSFCH, the above-mentioned PSFCH transmission timing corresponds to the PSFCH reception timing.

In this embodiment, the basic principle for selecting N _Tx,PSFCH PSFCHs is: give priority to selecting the PSFCH corresponding to m>1 PSFCH transmission opportunities for transmission.

In this embodiment, M=2, so the PSFCH corresponding to the second transmission opportunity of the PSFCH is preferentially selected for transmission.

As shown in Figure 7, the number of PSFCHs to be sent by the UE in slot n+11 is Q=Q1+Q2. Among the Q PSFCHs to be sent, Q1 PSFCHs to be sent belong to the PSFCH resource subset 421, and Q2 PSFCHs to be sent belong to the PSFCH resource subset 422.

In time slot n+11, the UE needs to send N _Tx,PSFCH PSFCH, and N _Tx,PSFCH <= Q1+Q2.

Corresponding to the above basic principle of selecting N _Tx,PSFCH PSFCHs, the UE preferentially selects the PSFCH corresponding to the retransmission PSFCH transmission opportunity, that is, the m>1th PSFCH transmission opportunity. In the embodiment corresponding to Figure 7, that is, the UE preferentially selects the retransmission m=PSFCH corresponding to 2 PSFCH transmission opportunities.

When NTx _,PSFCH <= Q1, the UE selects the NTx _,PSFCH PSFCHs with the lowest priority values from the PSFCHs to be sent in the PSFCH resource subset 421 for transmission. Each of the N _Tx,PSFCH PSFCHs corresponds to a second transmission opportunity of a PSSCH.

When N _Tx,PSFCH >Q1, the terminal first selects Q1 PSFCHs to be sent in the PSFCH resource subset 421, and then the UE selects N _Tx,PSFCH -Q1 PSFCHs to be sent among the PSFCHs to be sent in the PSFCH resource subset 422. .

After the selection is completed, the UE sends the selected _NTx,PSFCH .

It should be noted that for the situation where M>2, that is, when one PSSCH is mapped to 3 or even 4 PSFCH transmission opportunities, the method provided in the embodiment of the present application is still applicable. In this case, the PSFCH corresponding to the second transmission opportunity may be selected for transmission, or the PSFCH corresponding to the third transmission opportunity may be selected for transmission, or the PSFCH corresponding to the fourth transmission opportunity may be selected for transmission. This selection method can prioritize sending PSFCHs with fewer remaining transmission opportunities, and try to avoid failure to send due to missing the last transmission opportunity.

As shown in Figure 8, one PSSCH is mapped to M=2 PSFCH transmission opportunities. Taking the PSSCH located in slot n+2 as an example, the first PSFCH transmission opportunity mapped by the PSSCH is located in slot n+7, and the second PSFCH transmission opportunity is located in slot n+11. Each time slot containing PSFCH resources includes M=2 PSFCH resource subsets, corresponding to the first PSFCH transmission opportunity and the second PSFCH transmission opportunity respectively. Taking slot n+11 as an example, it contains M=2 PSFCH resource subsets, PSFCH resource subset 521 and PSFCH resource subset 522. Each PSFCH resource in PSFCH resource subset 521 corresponds to the first PSFCH transmission opportunity. , each PSFCH resource in the PSFCH resource subset 522 corresponds to the second PSFCH transmission opportunity. In order to facilitate observation and understanding, different shading methods are used for the first transmission timing and the second transmission timing. For identification. More specifically, the PSFCH resource subset 521 includes M1 PSFCH resources, each of which corresponds to the first PSFCH transmission opportunity. PSFCH resource subset 2 includes M2 PSFCH resources, each of which corresponds to the second PSFCH transmission opportunity.

Those skilled in the art can understand that, for a UE that sends PSFCH, the above-mentioned PSFCH transmission timing corresponds to the PSFCH sending timing. For a UE that receives PSFCH, the above-mentioned PSFCH transmission timing corresponds to the PSFCH reception timing.

In this embodiment, the basic principle for selecting N _Tx,PSFCH PSFCHs is: in a time slot containing PSFCH resources, the UE selects N _Tx,PSFCH PSFCHs corresponding to the minimum first priority value for transmission.

More specifically, the first priority value corresponding to the first PSFCH transmission opportunity is equal to the second priority value; the first priority value corresponding to the m>1th PSFCH transmission opportunity is equal to the second priority value and a compensation value. Sum. The second priority value is the priority value indicated by the SCI format associated with the PSFCH transmission opportunity. The compensation value can be a fixed value or a value configured by high-layer signaling. High-layer signaling may be RRC signaling or SIB signaling, etc.

As shown in Figure 8, the number of PSFCHs to be sent by the terminal in time slot n+11 is Q=Q1+Q2. Among the Q PSFCHs to be sent, Q1 PSFCHs to be sent belong to the PSFCH resource subset 521, and Q2 PSFCHs to be sent belong to the PSFCH resource subset 522.

In time slot n+11, the terminal sends N _Tx,PSFCH PSFCH, and N _Tx,PSFCH <= Q1+Q2.

Each PSFCH of all Q1+Q2 PSFCHs to be sent in time slot n+11 first corresponds to a second priority value. The second priority value is the priority indicated by the SCI format associated with the PSFCH transmission opportunity. value.

In a specific embodiment, the first priority value of each PSFCH in the PSFCH resource subset 521 is the above-mentioned second priority value; the first priority value of each PSFCH in the PSFCH resource subset 522 is The sum of the second priority value and an offset value.

In a specific embodiment, the first priority value of each PSFCH in the PSFCH resource subset 521 is the sum of the above-mentioned second priority value and a compensation value; each PSFCH in the PSFCH resource subset 522 The first priority value is the second priority value.

In a specific embodiment, the first priority value of each PSFCH in the PSFCH resource subset 521 is the sum of the above-mentioned second priority value and the first compensation value; each PSFCH value in the PSFCH resource subset 522 The first priority value of a PSFCH is the sum of the second priority value and the second compensation value, where the first compensation value is different from the second compensation value.

After the selection is completed, among the Q1+Q2 PSFCHs to be sent in slot n+11, the terminal selects to send the N _Tx,PSFCH PSFCHs with the lowest first priority value.

It should be noted that for the situation where M>2, that is, when one PSSCH is mapped to 3 or even 4 PSFCH transmission opportunities, the method provided in the embodiment of the present application is still applicable. In this case, there will be more sets of PSFCH resource subsets, and the definition of each PSFCH priority value can be achieved by configuring more different compensation values.

In one embodiment, the channel transmission method is still adopted in which the UE selects N _Tx,PSFCH PSFCHs corresponding to the minimum first priority value for transmission. However, the definition of the PSFCH resource subset is different from the embodiment corresponding to Figure 8. In this embodiment In the embodiment, the definition method of the PSFCH resource subset in the embodiment corresponding to Figure 6 is still adopted. Therefore, this embodiment is explained based on the labels in Figure 6 .

Each time slot containing PSFCH resources includes M PSFCH resource subsets. Taking slot n+11 as an example, it contains two PSFCH resource subsets, namely PSFCH resource subset 321 and PSFCH resource subset 322.

The PSFCH resource subset 322 includes Q2 PSFCH resources corresponding to the PSFCH to be sent. Each of the Q2 PSFCHs to be sent corresponds to the second PSFCH transmission of the UE.

In slot n+11, the UE sends N _Tx,PSFCH PSFCH, and N _Tx,PSFCH <= Q1+Q2.

Each of the Q=Q1+Q2 PSFCHs to be sent in slot n+11 first corresponds to a second priority value, and the second priority value is indicated by the SCI format associated with the PSFCH transmission opportunity. priority value.

In a specific embodiment, the first priority value of each PSFCH in the PSFCH resource subset 321 is the above-mentioned second priority value; the first priority value of each PSFCH in the PSFCH resource subset 322 is the second priority value. The sum of two priority values and one compensation value.

In a specific embodiment, the first priority value of each PSFCH in the PSFCH resource subset 321 is the sum of the above-mentioned second priority value and a compensation value; the first priority value of each PSFCH in the PSFCH resource subset 322 The first priority value is the above-mentioned second priority value.

In a specific embodiment, the first priority value of each PSFCH in the PSFCH resource subset 321 is the sum of the above-mentioned second priority value and the first compensation value; the first priority value of each PSFCH in the PSFCH resource subset 322 The first priority value is the sum of the above-mentioned second priority value and the second compensation value, where the first compensation value and the second compensation value are different.

It should be noted that the above compensation value is a fixed value, or a value configured by high-level signaling. The high-level signaling here may be RRC signaling or SIB signaling, etc.

Among the Q=Q1+Q2 PSFCHs to be sent in slot n+11, the UE sends N _Tx,PSFCH PSFCHs with the lowest first priority value.

In one embodiment, the channel transmission method is still adopted in which the UE selects N _Tx,PSFCH PSFCHs corresponding to the minimum first priority value for transmission, but the definition of the PSFCH resource subset is different from the above embodiment. In this embodiment , the definition method of the PSFCH resource subset in the embodiment corresponding to Figure 8 is still adopted. Therefore, this embodiment is explained based on the labels in Figure 8 .

As shown in Figure 8, one PSSCH is mapped to M=2 PSFCH transmission opportunities. Taking the PSSCH located in slot n+2 as an example, the first PSFCH transmission opportunity mapped by the PSSCH is located in slot n+7, and the second PSFCH transmission opportunity is located in slot n+11. Each time slot containing PSFCH resources includes M=2 PSFCH resource subsets, corresponding to the first PSFCH transmission opportunity and the second PSFCH transmission opportunity respectively. Taking slot n+11 as an example, it contains M=2 PSFCH resource subsets, PSFCH resource subset 521 and PSFCH resource subset 522. Each PSFCH resource in PSFCH resource subset 521 corresponds to the first PSFCH transmission opportunity. , each PSFCH resource in the PSFCH resource subset 522 corresponds to the second PSFCH transmission opportunity. In order to facilitate observation and understanding, the first transmission opportunity and the second transmission opportunity are marked with different shading methods. More specifically, the PSFCH resource subset 521 includes M1 PSFCH resources, each of which corresponds to the first PSFCH transmission opportunity. PSFCH resource subset 2 includes M2 PSFCH resources, each of which corresponds to the second PSFCH transmission opportunity.

As shown in Figure 8, the number of PSFCHs to be sent by the terminal in slot n+11 is Q=Q1+Q2. Among the Q PSFCHs to be sent, Q1 PSFCHs to be sent belong to the PSFCH resource subset 521, and Q2 PSFCHs to be sent belong to the PSFCH resource subset 522.

Each PSFCH among all Q1+Q2 PSFCHs to be sent in slot n+11 first corresponds to a second priority value.

In some embodiments, the second priority value is a priority value indicated by the SCI format associated with the PSFCH transmission opportunity.

In some embodiments, the second priority value is obtained by configuring the PSFCH subset through higher layer signaling.

In some embodiments, the second priority value is obtained by configuring the number of transmission opportunities of the PSFCH through higher layer signaling.

In addition to the above, each PSFCH corresponds to a second priority value, each PSFCH resource subset corresponds to a third priority value, that is, the PSFCH resource subset 521 and the PSFCH resource subset 522 respectively correspond to a third priority value.

It should be noted that this third priority value is the group priority value, and the group priority value represents the priority value of the group corresponding to each group of PSFCH.

The first priority value of a PSFCH to be sent is the weighted sum of the second priority value and the third priority of the PSFCH resource subset where the PSFCH is located.

In a specific embodiment, a PSFCH belongs to the PSFCH resource subset 521, the third priority value corresponding to the PSFCH resource subset 521 is P _subset3 , and the second priority value corresponding to the PSFCH is P _PSFCH2 , then the third priority value of the PSFCH A priority value P _PSFCH1 is:
P _PSFCH1 =α×P _PSFCH2 +β×P _subset2

Among them, α and β are the weighted sum and the corresponding weight coefficient respectively. The subscripts 1, 2, and 3 in P _PSFCH1 , P _PSFCH2 , and P _subset3 respectively represent the numerical sequence numbers in the first priority value, the second priority value, and the third priority value.

It is worth noting that the calculation of a priority value of PSFCH belonging to PSFCH resource subset 522 also uses the above calculation formula; therefore, all groups of PSFCH resource subsets can use the weighted sum calculation method to obtain the first priority value. As the priority value finally used for selection, only the first priority value obtained by calculating the weighted sum of one or more groups of PSFCH resource subsets may be used as the priority value finally used for selection.

It should be noted that for the situation where M>2, that is, when one PSSCH is mapped to 3 or even 4 PSFCH transmission opportunities, the method provided in the embodiment of the present application is still applicable. In this case, there will be more groups of PSFCH resource subsets, and each PSFCH priority value can be defined by configuring more different group priority values, that is, the third priority value.

In one embodiment, the channel transmission method is still adopted in which the UE selects N _Tx,PSFCH PSFCHs corresponding to the minimum first priority value for transmission. However, the definition of the PSFCH resource subset is different from the previous embodiment. In this embodiment , the definition method of the PSFCH resource subset in the embodiment corresponding to Figure 5 is still adopted. Therefore, this embodiment is explained based on the labels in Figure 6 .

In slot n+11, the UE sends N _Tx,PSFCH PSFCH, and N _Tx,PSFCH <= Q1+Q2.

In a specific embodiment, a PSFCH belongs to the PSFCH resource subset 521, the third priority value corresponding to the PSFCH resource subset 521 is P _subset3 , and the second priority value corresponding to the PSFCH is P _PSFCH2 , then the third priority value of the PSFCH A priority value P _PSFCH1 is:
P _PSFCH1 =α×P _PSFCH2 +β×P _subset3

Figure 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in the figure, the communication device includes:

The PSFCH resource group determination module 910 is configured to determine that the time slot includes M groups of PSFCHs, where M is an integer greater than or equal to 2, where each group of PSFCHs includes at least one PSFCH.

The PSFCH determination module 920 is configured to determine N PSFCHs according to the target priority values of the PSFCHs in the M groups of PSFCHs; where N represents the number of PSFCHs that need to be transmitted, and N is an integer greater than or equal to 2.

The PSFCH transmission module 930 is configured to transmit N PSFCHs.

Figure 10 is a schematic structural diagram of a communication device provided by an embodiment of the present application. As shown in the figure, the communication equipment includes:

A memory 1100, a processor 1200, and a computer program stored in the memory and executable on the processor; when the processor executes the computer program, the channel transmission method as described in any of the first aspects is implemented.

An embodiment of the present application also provides a computer-readable storage medium that stores computer-executable instructions. The computer-executable instructions are used to execute the channel transmission method provided in any embodiment of the present application.

An embodiment of the present application also provides a computer program product, which includes a computer program or computer instructions. The computer program or computer instructions are stored in a computer-readable storage medium. The processor of the computer device reads the computer program from the computer-readable storage medium. Program or computer instructions, the processor executes the computer program or computer instructions, so that the computer device performs the channel transmission method provided in any embodiment of the present application.

The system architecture and application scenarios described in the embodiments of this application are for the purpose of explaining the technical solutions of the embodiments of this application more clearly, and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those skilled in the art will know that with the system architecture With the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

Those of ordinary skill in the art can understand that all or some steps, systems, and functional modules/units in the devices disclosed above can be implemented as software, firmware, hardware, and appropriate combinations thereof.

In hardware implementations, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may consist of several physical components. Components execute cooperatively. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit . Such software may be distributed on computer-readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). As is known to those of ordinary skill in the art, the term computer storage media includes volatile and nonvolatile media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. removable, removable and non-removable media. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, Digital Versatile Disk (DVD) or other optical disk storage, magnetic cassettes, tapes, disk storage or other magnetic storage devices, or may Any other medium used to store the desired information and that can be accessed by a computer. Additionally, it is known to those of ordinary skill in the art that communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism, and may include any information delivery media .

The terms "component", "module", "system", etc. used in this specification are used to refer to computer-related entities, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to, a process, processor, object, executable file, thread of execution, program or computer running on a processor. Through the illustrations, both applications running on the computing device and the computing device may be components. One or more components can reside in a process or thread of execution, and the component can be localized on one computer or distributed between 2 or more computers. Additionally, these components can execute from various computer-readable media having various data structures stored thereon. A component may, for example, be based on a signal having one or more data packets (eg, data from two components interacting with another component, such as a local system, a distributed system, or a network, such as the Internet, which interacts with other systems via signals) Communicate through local or remote processes.

Some embodiments of the present application have been described above with reference to the accompanying drawings, but the scope of rights of the present application is not thereby limited. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and essence of this application shall be within the scope of rights of this application.

Claims

A channel transmission method, applied to time slots carrying physical side link feedback channel PSFCH resources, the method includes:

Determine that the time slot includes M groups of PSFCHs, where M is an integer greater than or equal to 2, wherein each group of PSFCHs includes at least one PSFCH;

Determine N PSFCHs according to the target priority value of the PSFCHs in the M groups of PSFCHs; where N represents the number of PSFCHs that need to be transmitted, and N is an integer greater than or equal to 2;

The N PSFCHs are transmitted.
The method according to claim 1, wherein the determining the time slot includes M groups of PSFCHs, including:

Determining that the time slot includes a first group of PSFCHs and a second group of PSFCHs;

The first group of PSFCHs includes Q1 PSFCHs to be transmitted, the Q1 PSFCHs to be transmitted correspond to Q1 target priority values, and the Q1 is a positive integer;

The second group of PSFCHs includes Q2 PSFCHs to be transmitted, the Q2 PSFCHs to be transmitted correspond to Q2 target priority values, and the Q2 is an integer greater than or equal to 0.
The method of claim 2, wherein,

Determining N PSFCHs according to the target priority value of the PSFCHs in the M groups of PSFCHs includes:

According to the Q1 target priority values corresponding to the Q1 PSFCHs to be transmitted in the first group of PSFCHs to be transmitted, N1 of the PSFCHs are determined, and N1 is a positive integer not greater than N.
The method according to claim 3, wherein determining the N PSFCHs according to the target priority values of the PSFCHs in the M groups of PSFCHs further includes:

After determining the N1 PSFCHs, determine N2 PSFCHs according to the Q2 target priority values corresponding to the Q2 PSFCHs to be transmitted in the second group of PSFCHs to be transmitted, where N2 is a positive integer not greater than N, The sum of N1 and N2 is not greater than N.
The method of claim 2, wherein

The target priority value of the PSFCH in the first group of PSFCHs includes the priority value indicated by the SCI format of the side link control information associated with the PSFCHs in the first group of PSFCHs;

The target priority value of the PSFCH in the second group of PSFCH includes the sum of the priority value and the compensation value indicated by the SCI format associated with the PSFCH in the second group of PSFCH.
The method of claim 2, wherein

The target priority value of the PSFCH in the first group of PSFCHs includes the sum of the priority value and the compensation value indicated by the SCI format of the side link control information associated with the PSFCHs in the first group of PSFCHs;

The target priority value of the PSFCH in the second group of PSFCH includes the priority value indicated by the SCI format associated with the PSFCH in the second group of PSFCH.
The method of claim 2, wherein

The target priority value of the PSFCH in the first group of PSFCHs includes the sum of the priority value indicated by the SCI format of the side link control information associated with the PSFCHs in the first group of PSFCHs and the first compensation value;

The target priority value of the PSFCH in the second group of PSFCHs includes the sum of the priority value indicated by the SCI format associated with the PSFCHs in the second group of PSFCHs and the second compensation value;

Wherein, the first compensation value and the second compensation value are different.
The method of claim 2, wherein

The target priority value of the PSFCH in the first group of PSFCH is obtained according to the priority value indicated by the SCI format of the side link control information associated with the PSFCH in the first group of PSFCH and the first group of priority values, The first group of priority values represents the priority values of the group corresponding to the first group of PSFCH;

The target priority value of the PSFCH in the second group of PSFCH includes the priority value indicated by the SCI format associated with the PSFCH in the second group of PSFCH.
The method of claim 2, wherein

The target priority value of the PSFCH in the first group of PSFCHs includes the priority value indicated by the SCI format of the side link control information associated with the PSFCHs in the first group of PSFCHs;

The target priority value of the PSFCH in the second group of PSFCH is obtained according to the priority value indicated by the SCI format associated with the PSFCH in the second group of PSFCH and the second group of priority values. The priority value represents the priority value of the group corresponding to the second group of PSFCH.
The method of claim 2, wherein

The target priority value of the PSFCH in the first group of PSFCH is obtained according to the priority value indicated by the SCI format of the side link control information associated with the PSFCH in the first group of PSFCH and the first group of priority values, The first group of priority values represents the priority values of the group corresponding to the first group of PSFCH;

The target priority value of the PSFCH in the second group of PSFCH is obtained according to the priority value indicated by the SCI format associated with the PSFCH in the second group of PSFCH and the second group of priority values. The priority value represents the priority value of the group corresponding to the second group of PSFCH;

Wherein, the first group of priority values and the second group of priority values are different.
The method according to claim 1, wherein the determining the time slot includes M groups of PSFCHs, including:

Determining that the time slot includes at least a first group of PSFCHs and a second group of PSFCHs;

Wherein, the first group of PSFCHs includes at least one PSFCH to be transmitted, and each of the PSFCHs to be transmitted is transmitted for the first time in the current time slot;

The second group of PSFCHs includes at least one PSFCH to be transmitted, and each of the PSFCHs to be transmitted is not transmitted for the first time in the current time slot.
The method according to claim 1, wherein the determining the time slot includes M groups of PSFCHs, including:

Determining that the time slot includes at least a first group of PSFCHs and a second group of PSFCHs;

Wherein, the first group of PSFCHs includes at least one PSFCH to be transmitted, and each PSFCH to be transmitted corresponds to the first PSFCH transmission opportunity;

The second group of PSFCHs includes at least one PSFCH to be transmitted, and each of the PSFCHs to be transmitted corresponds to a second PSFCH transmission opportunity.
The method of claim 12, comprising:

The PSFCH to be transmitted in the second group of PSFCH corresponds to the second PSFCH transmission opportunity in the current time slot, and the PSFCH to be transmitted in the second group of PSFCH is the first transmission in the current time slot.
A communication device including:

A PSFCH resource group determination module configured to determine that the time slot includes M groups of PSFCHs, where M is an integer greater than or equal to 2, wherein each group of PSFCHs includes at least one PSFCH;

A PSFCH determination module configured to determine N PSFCHs according to the target priority value of the PSFCHs in the M groups of PSFCHs; where N represents the number of PSFCHs that need to be transmitted, and N is greater than or equal to 2. integer;

A PSFCH transmission module configured to transmit the N PSFCHs.
A communications device including:

Memory, processor and computer program stored on the memory and executable on the processor;

When the processor executes the computer program, the channel transmission method according to any one of claims 1 to 13 is implemented.
A computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to execute the channel transmission method according to any one of claims 1 to 13.
A computer program product comprising a computer program or computer instructions stored in a computer-readable storage medium from which a processor of a computer device reads the computer program Or the computer instructions, the processor executes the computer program or the computer instructions, so that the computer device performs the channel transmission method according to any one of claims 1 to 13.