WO2020063289A1

WO2020063289A1 - Signal transmission method and device

Info

Publication number: WO2020063289A1
Application number: PCT/CN2019/104440
Authority: WO
Inventors: 王婷; 唐浩; 李新县; 唐臻飞
Original assignee: 华为技术有限公司
Priority date: 2018-09-30
Filing date: 2019-09-04
Publication date: 2020-04-02
Also published as: CN110972297B; CN110972297A

Abstract

The present application provides a signal transmission method and a device. The method enables sidelink transmission to a first terminal apparatus in a first resource, wherein a transmission type of the sidelink transmission corresponds to a first identifier, the first identifier corresponds to the first resource, and the transmission type of the sidelink transmission comprises a unicast, a multicast, and a broadcast. The method is utilized to determine a first resource of sidelink transmission according to a type of the sidelink transmission when performing the sidelink transmission with a first terminal apparatus, thereby selecting, according to the transmission type, a suitable sidelink resource to perform the sidelink transmission.

Description

Signal transmission method and device

Cross-reference to related applications

This application claims the priority of a Chinese patent application filed on September 30, 2018 with the State Intellectual Property Office, application number 201811161031.X, and application name "A Signal Transmission Method and Device", the entire contents of which are incorporated by reference In this application.

Technical field

The present application relates to the field of wireless communication technologies, and in particular, to a signal transmission method and device.

Background technique

At present, there are various types of wireless communication services. For example, based on cooperative-intelligent transportation system (C-ITS), terminals can use unicast and multicast when performing side-link communication. (groupcast) method and / or broadcast method. Among them, the side-link communication may include vehicle-to-vehicle (V2X) communication. Specifically, V2X communication may include vehicle-to-vehicle (V2V), vehicle-to-infrastructures (V2I), or vehicle-to-user (V2P) communications.

However, at the time of sidelink (SL) transmission, how to determine the transmission resources of sidelink transmission needs to be further studied.

Summary of the Invention

The present application provides a signal transmission method and device, which are used to provide a method for determining a transmission resource of a sidelink transmission to realize a sidelink transmission.

In a first aspect, the present application provides a first signal transmission method for determining a resource during sidelink transmission between a first terminal device and a second terminal device. The method may be performed by the second terminal device or other communication devices. (For example, a chip system) supporting the execution of a second terminal device, which may specifically include the following steps: performing side-link transmission with the first terminal device in the first resource, wherein a transmission type of the side-link transmission exists between the first type and the first identifier Correspondence, there is a correspondence between the first identifier and the first resource, and the transmission type of the side-link transmission includes unicast, multicast, or broadcast.

With the above method, the first resource of the side-link transmission can be determined according to the type of side-link transmission when performing side-link transmission with the first terminal device, so that appropriate sidelink resources can be selected for sidelink transmission according to the type of transmission.

In a possible design, configuration information may be received from a network device, and the configuration information is used to indicate a correspondence between a first identifier and a first resource. Therefore, the first resource corresponding to the first identifier may be determined according to the corresponding relationship indicated by the configuration information, so as to determine the first resource corresponding to the transmission type of the side link transmission.

In a possible design, the method may further include: sending a first request to the network device, receiving the first scheduling information fed back by the network device, and performing a bypass with the first terminal device in the second resource configured by the first scheduling information. Link transmission, where the first request may be used to request resources for side-link transmission, the first request may carry a first identifier, and the first scheduling information may be used to indicate the second resource from the first resource. By this method, resources used for side-link transmission are configured through scheduling information of a network device, and resources can be flexibly configured. For example, a network device can configure resources for side-link transmission based on channel conditions or resource usage, which can improve the accuracy of side-link transmission, thereby increasing the data transmission rate.

In a possible design, when receiving the first scheduling information, the PDCCH may be received from a network device, and the PDCCH carries the first scheduling information, wherein a demodulation reference signal of the PDCCH is determined according to the first identifier, or, The CRC of the PDCCH is scrambled according to the first identifier. With this method, the receiving process of the PDCCH can be simplified, and the target PDCCH can be quickly identified, thereby saving the power consumed when receiving the PDCCH. Further, scrambling the PDCCH by using the first identifier can perform interference randomization and improve transmission performance.

In a possible design, the method may further include: sensing a second resource from the first resource, and performing side-link transmission with the first terminal device in the second resource. By this method, the signaling overhead for notifying the second resource can be saved, so the resources used for data transmission can be increased, and the data transmission rate can be improved. Further, determining resources by perception can achieve rapid resource determination and data transmission.

In a possible design, the method may further include: sending the second scheduling information to the first terminal device, where the second scheduling information is used to indicate the second resource in the first resource, so that the network device can pass the first scheduling information The configured second resource indicates to the first terminal device, or the second resource of the first resource determined through sensing may be indicated to the first terminal device. By this method, resources for side-link transmission are configured through scheduling information, and resources can be flexibly configured. For example, resources for side-link transmission can be configured based on channel conditions or resource usage, which can improve the accuracy of side-link transmission, thereby increasing the data transmission rate.

In a possible design, when sending the second scheduling information, a side link control channel may be sent to the first terminal device, where the side link control channel carries the second scheduling information, and the solution of the side link control channel is The modulation reference signal is determined according to the first identifier, or the CRC of the side link control channel is scrambled according to the first identifier. With this method, the receiving process of the side link control channel can be simplified, and the target side link control channel can be quickly identified, thereby saving the power consumed when receiving the side link control channel. Further, scrambling the side link control channel by using the first identifier can randomize interference and improve transmission performance.

The second signal transmission method provided in this application may be executed by a first terminal device, and may also be executed by another communication device (such as a chip system) supporting the first terminal device. The method includes: The terminal device performs side-link transmission, and the transmission type of the side-link transmission corresponds to the first identifier, the first identifier corresponds to the first resource, and the transmission type of the side-link transmission is unicast, multicast, or broadcast.

In a possible design, configuration information may be received from a network device, and the configuration information is used to indicate a correspondence between a first identifier and a first resource. Therefore, the first resource corresponding to the first identifier may be determined according to the corresponding relationship indicated by the configuration information.

In a possible design, the method may further include: receiving second scheduling information for configuring a second resource from a second terminal device, and performing side-link transmission with the second terminal device in the second resource, where, The second scheduling information is used to indicate a second resource from the first resource.

In a possible design, when receiving the second scheduling information, the side link control channel may be received from the second terminal device, and the side link control channel carries the second scheduling information, where the solution of the side link control channel is The modulation reference signal is determined according to the first identifier, or the CRC of the side link control channel is scrambled according to the first identifier.

The third signal transmission method provided in this application may be performed by a network device, and may also be performed by another communication device (such as a chip system) supporting the network device. The method includes: sending to a second terminal device and / or a first terminal device Send configuration information, the configuration information is used to indicate the correspondence between the first identifier and the first resource, the first resource is used by the first terminal device and the second terminal device for side-link transmission, and the transmission type of the side-link transmission corresponds to the first An identifier. The transmission type of side-link transmission is unicast, multicast, or broadcast.

In a possible design, the method further includes: receiving a first request sent by a second terminal device, and feeding back to the second terminal device first scheduling information for configuring a second resource, where the first request is available for requesting For a resource for side-link transmission, the first request may carry a first identifier, and the first scheduling information may be used to indicate the second resource from the first resource.

In a possible design, when sending the first scheduling information, the PDCCH carrying the first scheduling information may be sent to the second terminal device, where the PDCCH demodulation reference signal is determined according to the first identifier, or the PDCCH The CRC is scrambled according to the first identification.

In a possible design, the first device is a receiving device for sidelink transmission, and the second device is a transmitting device for sidelink transmission.

In a second aspect, the present application provides a communication device. The communication device may be a terminal device or a device capable of supporting the terminal device to implement the functions of the terminal device. The communication device may include a processing module and a transceiver module, which may be used to execute or It can be used to support a terminal device to execute the corresponding function performed by the second terminal device in the first aspect and any one of the design examples of the first aspect. This corresponding function may correspond to the first signal transmission method provided by the first aspect.

In a possible device, the transceiver module may be configured to perform side-link transmission with the first terminal device in the first resource, wherein the transmission type of the side-link transmission corresponds to the first identifier, and the first identifier There is a corresponding relationship with the first resource, and the transmission type of the side-link transmission includes unicast, multicast, or broadcast.

In a possible design, the transceiver module may further receive configuration information from the network device, and the configuration information is used to indicate a correspondence between the first identifier and the first resource. Therefore, the first resource corresponding to the first identifier may be determined according to the corresponding relationship indicated by the configuration information.

In a possible design, the transceiver module may further send a first request to the network device, receive the first scheduling information fed back by the network device, and perform a side link with the first terminal device in the second resource configured by the first scheduling information. Transmission, where the first request may be used to request a resource for side-link transmission, the first request may carry a first identifier, and the first scheduling information may be used to indicate a second resource from the first resource. Optionally, the processing module is configured to generate a first request.

In a possible design, the transceiver module may receive the PDCCH from the network device, and the PDCCH carries first scheduling information, wherein a demodulation reference signal of the PDCCH is determined according to a first identifier, or a CRC of the PDCCH is based on The first identifier is scrambled.

In a possible design, the processing module may be configured to sense the second resource from the first resource, so that the transceiver module may perform side-link transmission with the first terminal device in the second resource.

In a possible design, the transceiver module may further send the second scheduling information to the first terminal device, and the second scheduling information is used to indicate the second resource in the first resource, so that the network device may be configured by using the first scheduling information. The second resource instructs the first terminal device, or the second resource of the first resource determined by the processing module through sensing may be indicated to the first terminal device. Optionally, the processing module is configured to generate second scheduling information.

In a possible design, when the transceiver module sends the second scheduling information, it can send a side link control channel to the first terminal device, where the side link control channel carries the second scheduling information and the side link control channel. The demodulation reference signal is determined according to the first identifier, or the CRC of the side link control channel is scrambled according to the first identifier.

In a possible design, the processing module is configured to process signals or information received by the transceiver module. For example, the processing module is configured to process configuration information and / or first scheduling information.

In a third aspect, the present application provides a communication device. The communication device may be a terminal device or a device capable of supporting the terminal device to implement the functions of the terminal device. The communication device may include a processing module and a transceiver module, which may be used to execute or It is used to support the terminal device to perform the corresponding function performed by the first terminal device in the first aspect and any one of the design examples of the first aspect. This corresponding function may correspond to the second signal transmission method provided by the first aspect.

In a possible device, the transceiver module may perform side-link transmission with the second terminal device in the first resource. The transmission type of the side-link transmission corresponds to the first identifier, and the first identifier corresponds to the first resource. The transmission type of the link transmission is unicast, multicast, or broadcast.

In a possible design, the transceiver module may receive configuration information from the network device, and the configuration information is used to indicate a correspondence between the first identifier and the first resource. Therefore, the first resource corresponding to the first identifier may be determined according to the corresponding relationship indicated by the configuration information.

In a possible design, the transceiver module may also receive second scheduling information for configuring the second resource from the second terminal device, and perform side-link transmission with the second terminal device in the second resource, where the second The scheduling information is used to indicate a second resource from the first resource.

In a possible design, when the transceiver module receives the second scheduling information, it can receive the side link control channel from the second terminal device, and the side link control channel carries the second scheduling information, where the side link control channel The demodulation reference signal is determined according to the first identifier, or the CRC of the side link control channel is scrambled according to the first identifier.

In a possible design, the processing module is configured to process signals or information received by the transceiver module. For example, the processing module is configured to process configuration information and / or second scheduling information.

According to a fourth aspect, the present application provides a communication device. The communication device may be a network device or a device capable of supporting the network device to implement the functions of the network device. The communication device may include a processing module and a transceiver module, and may be used to execute the foregoing. The first aspect, and the corresponding function performed by the network device in any of the design examples of the first aspect. This corresponding function may correspond to the third signal transmission method provided by the first aspect.

In a possible device, the transceiver module may be configured to send configuration information to the first terminal device and / or the second terminal device, where the configuration information is used to indicate a correspondence between the first identifier and the first resource, and the first resource is used for the first A terminal device and a second terminal device perform side-link transmission. The transmission type of the side-link transmission corresponds to the first identifier, and the transmission type of the side-link transmission is unicast, multicast, or broadcast. Optionally, the processing module is configured to generate the configuration information.

In a possible design, the transceiver module is further configured to receive the first request sent by the second terminal device and feed back the first scheduling information for configuring the second resource to the second terminal device, where the first request may be used for Request a resource for side-link transmission. The first request may carry a first identifier, and the first scheduling information may be used to indicate a second resource from the first resource. Optionally, the processing module is configured to process the first request, and is configured to determine or generate the first scheduling information.

In a possible design, when sending and receiving the first scheduling information, the transceiver module may send the PDCCH carrying the first scheduling information to the second terminal device, where the PDCCH demodulation reference signal is determined according to the first identifier, or The CRC of the PDCCH is scrambled according to the first identifier. Optionally, the processing module is configured to generate a PDCCH.

In a fifth aspect, an embodiment of the present application further provides a communication device. The communication device may be a terminal device or a device (for example, a chip system) capable of supporting the terminal device to implement the functions of the terminal device. The communication device includes a processor , For implementing the function of the second terminal device in the method described in the first aspect. This function may correspond to the first signal transmission method provided by the first aspect. The communication device may further include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor may call and execute the program instructions stored in the memory to implement the first aspect, the second terminal device in the method described in any one of the design examples of the first aspect Functions. The communication device may further include a communication interface, and the communication interface is used for the communication device to communicate with other devices. For example, the communication interface is a circuit, a module, an interface, a bus, or a transceiver. Exemplarily, the other device is a network device and / or a first terminal device.

In a possible device, the communication device may include:

Communication Interface;

Memory for storing program instructions;

A processor, configured to perform side-link transmission with the first terminal device in the first resource by using the communication interface, wherein the transmission type of the side-link transmission corresponds to the first identifier, and the first identifier and the first identifier There is a corresponding relationship between a resource, and the transmission type of side-link transmission includes unicast, multicast, or broadcast.

In a possible design, the processor may be further configured to use the communication interface to receive configuration information from a network device, where the configuration information is used to indicate a correspondence between a first identifier and a first resource. Therefore, the first resource corresponding to the first identifier may be determined according to the corresponding relationship indicated by the configuration information.

In a possible design, the processor may be further configured to use the communication interface to send a first request to the network device, receive the first scheduling information sent by the network device, and neutralize the second resource in the second resource configured by the first scheduling information. A terminal device performs side-link transmission. The first request may be used to request resources for side-link transmission. The first request may carry a first identifier, and the first scheduling information may be used to indicate the first resource from the first resource. Two resources.

In a possible design, the processor may receive the PDCCH from the network device by using the communication interface, and the PDCCH carries first scheduling information, where a demodulation reference signal of the PDCCH is determined according to a first identifier, or the The CRC of the PDCCH is scrambled according to the first identifier.

In a possible design, the processor may be further configured to sense the second resource from the first resource.

In a possible design, the processor may be further configured to use the communication interface to send second scheduling information to a first terminal device, where the second scheduling information is used to indicate a second resource in the first resource. With this method, the second resource configured by the network device through the first scheduling information may be indicated to the first terminal device, or the second resource of the first resource determined by the processor through sensing may be indicated to the first terminal device. Instructions.

In a possible design, when the processor sends the second scheduling information to the first terminal device by using the communication interface, the processor may send a side link control channel to the first terminal device, where the side link control channel carries In the second scheduling information, the demodulation reference signal of the side link control channel is determined according to the first identifier, or the CRC of the side link control channel is scrambled according to the first identifier.

According to a sixth aspect, an embodiment of the present application further provides a communication device. The communication device may be a terminal device or a device (for example, a chip system) capable of supporting the terminal device to implement the functions of the terminal device. The communication device includes a processor. , For implementing the function of the first terminal device in the method described in the first aspect. This function may correspond to the second signal transmission method provided by the first aspect. The communication device may further include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor may call and execute program instructions stored in the memory, for implementing the first aspect, the first terminal in the method described in any one of the design examples of the first aspect Function of the device. The communication device may further include a communication interface, where the communication interface communicates with other devices. For example, the communication interface is a circuit, a module, an interface, a bus, or a transceiver. Exemplarily, the other device is a network device and / or a second terminal device.

In a possible device, the communication device may include:

Communication Interface;

Memory for storing program instructions;

A processor for using the communication interface to perform side-link transmission with the second terminal device in the first resource, and the transmission type of the side-link transmission corresponds to the first identifier, the first identifier corresponds to the first resource, and the side-chain The transmission type of the road transmission is unicast, multicast, or broadcast.

In a possible design, the processor may be further configured to use the communication interface to receive second scheduling information for configuring the second resource from the second terminal device, and perform side-chaining with the second terminal device in the second resource. Transmission, wherein the second scheduling information is used to indicate the second resource from the first resource.

In a possible design, when the processor receives the second scheduling information by using the communication interface, the processor may receive a side link control channel from the second terminal device, and the side link control channel carries the second scheduling information, where: The demodulation reference signal of the side link control channel is determined according to the first identifier, or the CRC of the side link control channel is scrambled according to the first identifier.

According to a seventh aspect, an embodiment of the present application further provides a communication device. The communication device may be a network device or a device (for example, a chip system) capable of supporting the network device to implement the functions of the network device. The communication device includes a processor. To implement the functions of the network device in the method described in the first aspect. This function may correspond to the third signal transmission method provided by the first aspect. The communication device may further include a memory for storing program instructions and data. The memory is coupled to the processor, and the processor may call and execute program instructions stored in the memory, for implementing the network device in the method described in the first aspect and any one of the design examples of the first aspect. Functions. The communication device may further include a communication interface, where the communication interface communicates with other devices. For example, the communication interface is a circuit, a module, an interface, a bus, or a transceiver. Exemplarily, the other device is a first terminal device and / or a second terminal device.

In a possible device, the communication device includes:

Communication Interface;

Memory for storing program instructions;

A processor, configured to use the communication interface to send configuration information to a first terminal device and / or a second terminal device, where the configuration information is used to indicate a correspondence between a first identifier and a first resource, and the first resource is used for the first A terminal device and a second terminal device perform side-link transmission. The transmission type of the side-link transmission corresponds to the first identifier, and the transmission type of the side-link transmission is unicast, multicast, or broadcast.

In a possible design, the processor is further configured to receive the first request sent by the second terminal device by using the communication interface, and send the first request for configuring the second resource to the second terminal device by using the communication interface. Scheduling information, where the first request may be used to request resources for side-link transmission, the first request may carry a first identifier, and the first scheduling information may be used to indicate the second resource from the first resource.

In a possible design, when the processor sends the first scheduling information to the second terminal device by using the communication interface, the processor may send the PDCCH carrying the first scheduling information to the second terminal device, where the PDCCH demodulation reference is The signal is determined according to the first identifier, or the CRC of the PDCCH is scrambled according to the first identifier.

In an eighth aspect, a computer-readable storage medium is provided in an embodiment of the present application, and includes instructions that, when run on a computer, cause the computer to execute the first aspect or any one of the design examples described in the first aspect. The function of the second terminal device in the method. This function may correspond to the first signal transmission method provided by the first aspect.

In a ninth aspect, an embodiment of the present application further provides a computer-readable storage medium, including instructions, which, when run on a computer, cause the computer to execute the first aspect, or any one of the design examples described in the first aspect. The function of the first terminal device in the method. This function may correspond to the second signal transmission method provided by the first aspect.

In a tenth aspect, an embodiment of the present application further provides a computer-readable storage medium including instructions that, when running on a computer, causes the computer to execute the first aspect, or any one of the design examples described in the first aspect. The function of the network device in the method. This function may correspond to the third signal transmission method provided by the first aspect.

According to an eleventh aspect, an embodiment of the present application provides a chip system. The chip system includes a processor and may further include a memory, and is configured to implement the method described in the first aspect or any one of the design examples of the first aspect. Function of the second terminal device. The chip system can be composed of chips, and can also include chips and other discrete devices. This function may correspond to the first signal transmission method provided by the first aspect.

In a twelfth aspect, an embodiment of the present application provides a chip system. The chip system includes a processor and may further include a memory, and is configured to implement the method described in the first aspect or any one of the design examples of the first aspect. Functions of the first terminal device. The chip system can be composed of chips, and can also include chips and other discrete devices. This function may correspond to the second signal transmission method provided by the first aspect.

In a thirteenth aspect, an embodiment of the present application provides a chip system that includes a processor and may further include a memory, and is configured to implement the method described in the first aspect or any one of the design examples of the first aspect. Features of network devices. The chip system can be composed of chips, and can also include chips and other discrete devices. This function may correspond to the third signal transmission method provided by the first aspect.

In a fourteenth aspect, an embodiment of the present application provides a computer program product containing instructions, which when executed on a computer, causes the computer to execute any one of the methods described in the first aspect.

In a fifteenth aspect, an embodiment of the present application provides a system, where the system includes the communication device according to the second or fifth aspect, the communication device according to the third or sixth aspect, and the fourth aspect or the first aspect The communication device according to the seventh aspect.

In a sixteenth aspect, an embodiment of the present application provides a system, where the system includes the communication device described in the second or fifth aspect, and the communication device described in the third or sixth aspect.

In a seventeenth aspect, an embodiment of the present application provides a system, where the system includes the communication device according to the second or fifth aspect, and the communication device according to the fourth or seventh aspect.

In an eighteenth aspect, an embodiment of the present application provides a system including the communication device according to the third aspect or the sixth aspect, and the communication device according to the fourth aspect or the seventh aspect.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a schematic structural diagram of a wireless communication system according to an embodiment of the present application;

FIG. 2 is a schematic architecture diagram of a V2X scenario provided by an embodiment of the present application; FIG.

3 is a schematic structural diagram of a UE according to an embodiment of the present application;

4 is a schematic structural diagram of a base station according to an embodiment of the present application;

5 is a schematic flowchart of a signal transmission method according to an embodiment of the present application;

6 is a schematic flowchart of another signal transmission method according to an embodiment of the present application;

7 is a schematic flowchart of another signal transmission method according to an embodiment of the present application;

8 is a schematic flowchart of a signal transmission method according to an embodiment of the present application;

9 is a schematic flowchart of a signal transmission method according to an embodiment of the present application;

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

FIG. 11 is a schematic structural diagram of another communication device according to an embodiment of the present application.

detailed description

In order to make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

The terms used in the embodiments of the present application are explained below:

1. At least one means one or more than one, that is, including one, two, three and more.

2. Multiple means two or more, including two, three and more.

3. Carrying can mean that a message is used to carry certain information or data, or that a message is composed of certain information.

4. Sidelink is used for device-to-device (D2D) communication, such as V2X communication.

Hereinafter, embodiments of the present application will be described in detail with reference to the drawings. First, the wireless communication system provided by the embodiment of the present application is introduced. The signal transmission method provided by the present application can be applied to the system. Then the terminal and network equipment provided by the embodiment of the present application are introduced. Finally, the signal transmission method provided by the embodiment of the present application is introduced. .

As shown in FIG. 1, the wireless communication system 110 provided in the embodiment of the present application may include UE 101, UE 102, and network device 103. The application scenarios of the wireless communication system 110 provided in the embodiment of the present application include, but are not limited to, long-term evolution ( Long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), future system, 5th generation (5G) system, and so on. Among them, the 5G system can also be referred to as a new radio (new radio, NR) system. It should be understood that the wireless communication system 110 provided in the embodiment of the present application can be applied to a low frequency scene (sub 6G) and a high frequency scene (above 6G), which is not limited in the embodiment of the present application.

Exemplarily, UE 101 and UE 102 may be devices such as a terminal, a mobile station (MS), and a mobile terminal. The UE 101 can communicate with one or more of one or more communication systems. Network devices communicate and accept network services provided by the network devices. The network devices here include, but are not limited to, the network device 103 shown in the figure. For example, the UE 101 and UE 102 in the embodiments of the present application may be mobile phones (or called “cellular” phones), computers with mobile terminals, etc. UE 101 and UE 102 may also be portable, compact, handheld Mobile, built-in computer, or on-board. UE 101 and UE 102 may also be communication chips with communication functions. In the embodiment of the present application, UE 101 and UE 102 may be configured to support sidelink transmission.

It should be understood that the sidelink transmission involved in the embodiments of the present application may be a sidelink data transmission or a sidelink signal transmission. Specifically, the Sidelink transmission may include transmission of data, transmission of control information, or transmission of both control data and data. In this application, transmission may refer to sending and / or receiving and / or sensing.

The network device 103 may include a base station (BS), or a base station and a radio resource management device for controlling the base station, etc. The base station here may be an evolutionary NodeB (eNB or eNodeB) in an LTE system, A small base station (micro / pico eNB) or a transceiver node (transmission / reception point (TRP)), or the base station can be a relay station, an access point, an in-vehicle device, a wearable device, and a base station in a future 5G network or a future evolved PLMN network The base stations, etc., such as NR base stations, are not limited in the embodiments of the present application. The network device may be a communication device such as an operator. Among them, the base station in 5G can also be called a next generation node (generation NodeB, gNB).

Based on the wireless communication system 110, the network device 103 can provide wireless cell signal coverage and provide one or more cells to serve the UE 101 and UE 102. Specifically, the network device 103 and the UE 101 can perform data transmission through the air interface resource, the network device 103 and the UE 102 can perform data transmission through the air interface resource, and the UE 101 and the UE 102 can perform sidelink transmission through the sidelink resource. Among them, UE 101 may be a transmitting device in a sidelink transmission, then UE 102 may be a receiving device in a sidelink transmission, or UE 102 may be a transmitting device in a sidelink transmission, and UE 101 may be a receiving device in a sidelink transmission.

The following uses the V2X scenario shown in FIG. 2 as an example to describe the transmission type of sidelink transmission between UEs. The UE involved in the V2X scenario shown in FIG. 2 may be a vehicle-mounted mobile device.

Sidelink transmission types include unicast, multicast and broadcast. Among them, unicast refers to the communication between one UE and another UE; multicast refers to the communication between a UE and a group of UEs. Here, a group of UEs can refer to UEs within a certain geographical range. Can refer to a fleet of UEs, a group of UEs with fixed communication, or a group of UEs with a certain purpose, etc. Broadcasting refers to the communication between a UE and unspecified multiple UEs. Here, The unspecified multiple UEs may refer to all UEs in a cell, and all UEs may include one or more groups of UEs.

As shown in FIG. 2, the radio cell signal coverage provided by the base station 200 may include multiple UEs, and the UEs may communicate through a sidelink method. Specifically, the UE 201 shown in FIG. 2 can perform sidelink transmission to the UE 202 by unicast. At this time, the UE 201 is a transmitting device of the sidelink transmission, and the UE 202 is a receiving device of the sidelink transmission. The UE 203 can be transmitted through Sidelink transmission is performed to multiple UEs in multicast mode. At this time, UE203 is the transmitting device for sidelink transmission, and multiple UE204s are the receiving device for sidelink transmission. UE205 can also be transmitted to multiple UEs in multicast mode. 206 performs sidelink transmission. At this time, UE 205 is the transmitting device for sidelink transmission, and multiple UEs 206 are receiving devices for sidelink transmission. UE 207 can perform sidelink transmission to multiple UEs in the cell by broadcasting. For example, Broadcast sidelink messages to UE 201, UE 208, and UE 209. At this time, UE 207 is the sending end device for sidelink transmission, and UE 201, UE 208, and UE 209 are the receiving end devices for sidelink transmission. Further, one or more UEs performing sidelink transmission may not be within the coverage of the wireless cell signal, that is, some UEs performing sidelink transmission may not be within the circle of FIG. 2. Specifically, this application does not limit this.

Exemplarily, a UE 300 provided in an embodiment of the present application may have a structure as shown in FIG. 3. It can be seen that the UE 300 includes a processor 301, a transceiver 302, and an antenna 303. The processor 301 may be used by the UE 300 to implement the steps involved in the UE 300 in the method provided in the embodiment of the present application. For example, the processor 301 may be used by the UE 300 to determine the first resource; the transceiver 302 may be coupled to the antenna 303 and used to: Support UE 300 for interaction, for example, it can be used for UE 300 to perform sidelink sending and / or receiving in the first resource. Exemplarily, the UE 300 may further include a memory 304 in which computer programs and instructions are stored. The memory 304 may be coupled to the processor 301 and / or the transceiver 302, and is configured to support the processor 301 to call the computer programs and instructions in the memory 304. In order to implement the steps involved in the UE 300 in the method provided by the embodiment of the present application; in addition, the memory 304 may also be used to store data involved in the method embodiment of the present application, for example, to store data necessary to support the transceiver 302 to implement interaction , Instructions, and / or are used to store configuration information necessary for the UE 300 to perform the method described in the embodiment of the present application. It should be understood that the UE 101 and the UE 102 in the wireless communication system 110 shown in FIG. 1 may have a structure as the UE 300 in FIG. 3.

Exemplarily, as shown in FIG. 4, a base station 400 provided in the embodiment of the present application may include a processor 401, a transceiver 402, and an antenna 403. The processor 401 may be used in the base station 400 to implement the method provided in the embodiment of the present application. The steps involved in the base station 400 can be used, for example, to generate the configuration information for the base station 400; the transceiver 402 can be coupled to the antenna 403 to support the base station 400 for interaction, for example, it can be used for the base station 400 to send the configuration information to the UE 101. Exemplarily, the base station 400 may further include another interface 404 for supporting the base station 400 to perform interaction in a wired manner. For example, the other interface 404 may be an optical fiber link interface, an Ethernet interface, or a copper interface. Exemplarily, the base station 400 may further include a memory 405, which may store computer programs and instructions. The memory 405 may be coupled to the processor 401, the transceiver 402, and other interfaces 404, and is configured to support the processor 401 to call the computer in the memory 405. Programs and instructions to implement the steps involved in the base station 400 in the method provided in the embodiment of the present application; in addition, the memory 405 may also be used to store data involved in the method embodiment of the present application, for example, used to store the support transceiver 402 and / or Other interfaces 404 implement data and instructions necessary for interaction. It should be understood that the network device 103 in the wireless communication system 110 shown in FIG. 1 may have the structure of the base station 400 shown in FIG. 4.

In the following, with reference to FIG. 5, taking the wireless communication system 110 shown in FIG. 1 as an example, if UE 101 is a transmitting device of sidelink and UE 102 is a receiving device in sidelink transmission, the communication method provided in the embodiment of the present application will be described. The method includes the following steps:

S101: The UE 101 determines a correspondence between a first resource and a first identifier;

S102: The UE 101 performs sidelink transmission with the UE 102 in the first resource, where the transmission type of the sidelink transmission corresponds to the first identifier, the first identifier corresponds to the first resource, and the transmission type of the side link transmission is unicast, group Broadcast or broadcast.

By using the above method, sidelink transmission between UE 101 and UE 102 can be performed in the first resource, where there is a correspondence relationship between the transmission type of the sidelink transmission and the first identifier, and the first identifier and the first resource for sidelink transmission With the corresponding relationship, the first resource of the sidelink transmission is determined according to the transmission type of the sidelink transmission. Since the first resource of the sidelink transmission can be determined according to the transmission type of the sidelink transmission, the transmission resources of the sidelink transmission of different transmission types can be distinguished to avoid resource conflicts in the sidelink transmission of different transmission types.

Optionally, the first resource here refers to a resource pool (side resource pool or SL resource pool) or carrier partial bandwidth (BWP) (hereinafter referred to as SL) transmitted by sidelink. BWP). The first resource can be identified by the SL resource pool or the SL BWP identifier (number). The UE 101 may determine one or more first resources, where the one or more first resources correspond to one or more first identities. It should be understood that multiple first resources may overlap to achieve resource sharing of multiple transmission types. In the embodiment of the present application, the carrier bandwidth portion may also be referred to as a bandwidth resource, a frequency resource, a bandwidth portion, and the like.

In addition, this application does not limit whether the correspondence between the first resource and the first identifier is expressed in the form of a correspondence table or the like, or is expressed in other ways. The UE 101 shown in step S101 determines the correspondence between the first resource and the first identifier, which may also mean that the UE 101 determines the first identifier corresponding to the first resource, or the UE 101 determines the first resource corresponding to the first identifier.

In the embodiment of the present application, the transmission type of the side-link transmission is unicast, multicast, or broadcast, and each different transmission type may correspond to a corresponding first identifier, where the first identifier may be a destination identifier ( ID), source identification, transmission type identification, or wireless network temporary identification (RNTI).

The destination identifier can refer to the identifier assigned when the UE is performing sidelink transmission, which is used to indicate the transmission destination of the data in the sidelink transmission. For example, the receiving device of the sidelink transmission will be assigned a layer 2 destination identifier (destination layer-2ID). The destination layer-2ID of the receiving device in the sidelink transmission is used as the destination identifier.

The source identifier is used to indicate the sender of the data in the sidelink transmission. For example, the sender device of the sidelink transmission will be assigned the layer 2 source identifier (source layer-2ID). The source layer-2ID of the sender device in the sidelink transmission can be used as the source. Logo.

Taking V2X as an example, in multicast and broadcast, the Prose ID provided to the UE by the upper layer can be used as the source layer-2ID, and the Prose ID provided by the upper layer can be directly used as the destination layer-2ID. It can be set by the UE's high level itself, such as factory settings, or it can be notified by the base station's high level to the UE's high level, or it can be preconfigured by the operator through the high level. For another example, in the one-to-one communication of the V2X system, the Prose UEID provided by the upper layer can be directly used as the source layer-2ID or destination layer-2ID. In addition, in V2X, the source layer-2ID and destination layer-2ID can be configured to the UE through a higher layer. Among them, Prose UEID may refer to an identifier of a terminal in a near-end communication scenario such as D2D or V2X.

The transmission type identifier may refer to an identifier used to indicate a transmission type, and may include, for example, a unicast identifier, a multicast identifier, and a broadcast identifier. Specifically, the transmission type corresponding to the identification of the transmission type may be predefined by the protocol, or may be configured by the network device to the UE. Specifically, this application does not limit this.

RNTI refers to the wireless network temporary identity of the sidelink link established by the UE during sidelink transmission. The base station will configure the wireless network temporary identity. sl-sps-v-RNTI. Optionally, the value range of RNTI can be 0 to 65535, or it can be other values.

The following uses the first resource as a resource pool as an example to describe the sidelink transmission method involved in the embodiment of the present application. The resource pool may refer to a group of resources used for sidelink transmission, and may include a resource block pool in the frequency domain and a subframe pool in the time domain. The subframe pool may also be a time domain unit pool, where the time domain unit may be a time slot, a micro time slot, a mini time slot, a symbol, etc., that is, it may be a time slot pool or a time domain symbol pool. Resource pools can be divided into sending resource pools (for sidelink sending) and receiving resource pools (for sidelink receiving). The sending resource pool list may include one or more sending resource pools, and the receiving resource pool list may include one or more receiving resource pools. The resource pool transmitted by sidelink may be a pre-configured resource pool, a resource pool configured in system information or broadcast information, or a resource pool configured in radio resource control (RRC) signaling. UE 101 can determine whether other UEs occupy certain resources in the resource pool through sensing. If no other UEs occupy this resource, UE 101 can perform sidelink transmission on these resources. Alternatively, UE 101 can Scheduling, and performing sidelink transmission on certain resources configured by the network device 103 in the resource pool. For example, the base station may instruct downlink control information (downlink control information) to indicate the subchannels of the resources transmitted by sidelink in the resource channel pool ( subchannel) with the lowest index (index) and resources for sidelink transmission, the UE may perform sidelink transmission on the resources in the resource pool according to the DCI.

In the embodiment of the present application, the time domain unit in the wireless communication may include time domain units such as a radio frame, a subframe, a time slot, a micro time slot, a mini time slot, and a symbol. The duration of a radio frame can be 10 milliseconds (ms). A radio frame may include one or more subframes. For example, if the duration of a subframe is 1 millisecond, a radio frame may include 10 subframes. A subframe may include one or more time slots. There can be different slot lengths for different subcarrier intervals. For example, when the subcarrier interval is 15 kilohertz (kHz), one time slot can be 1ms; when the subcarrier interval is 30kHz, one time slot can be 0.5ms; and so on. A slot may include one or more symbols. For example, the next slot of a normal cyclic prefix (CP) may include 14 symbols, and the next slot of an extended CP may include 12 symbols.

A microslot (or minislot) may be a smaller unit than a slot, and a microslot may include one or more symbols. For example, a mini-slot (or mini-slot) can include 2 symbols, 4 symbols, or 7 symbols. A subframe may include one or more mini-slots. A time slot may include one or more micro time slots (or mini time slots).

The following uses the first resource SLBWP as an example to describe the sidelink transmission method involved in the embodiment of the present application. SLBWP can indicate a set of resources for sidelink transmission. The SLBWP transmitted by the sidelink may be a SLBWP configured in a pre-configured resource pool, system information or broadcast information, or a SLBWP configured in radio resource control (radio resource control (RRC) signaling). The UE 101 can determine whether other UEs occupy certain resources in the SLBWP through sensing. If no UE occupies this resource, the UE 101 can perform sidelink transmission on these resources, or the UE 101 can perform scheduling according to the network device 103. , Performing sidelink transmission on some resources in the SL BWP configured by the network device 103, for example, the base station may indicate the position of the sidelink transmitted resource in the SL BWP through downlink control information (DCI), and the UE may DCI, performs sidelink transmission on the resources in SL BWP.

In a feasible implementation manner, the UE 101 may determine the correspondence between the first resource and the first identifier according to the configuration information sent by the network device 103. Specifically, the network device 103 may configure the first identifier and the first resource. Corresponding relationship, and indicates the first resource corresponding to the first identifier or the first identifier corresponding to the first resource in the configuration information sent to the UE 101. For example, the configuration information may indicate multiple groups of the first identifier and the first resource. After receiving the configuration information, 101 may determine the first identifier corresponding to the transmission type according to the transmission type transmitted by the sidelink, and determine the first identifier corresponding to the first identifier from multiple groups of the first identifier and the first resource according to the determined first identifier. First resource. The configuration information may indicate a set of first identifiers and first resources. After receiving multiple sets of configuration information, the UE 101 may determine the first identifier corresponding to the transmission type according to the transmission type transmitted by sidelink, and according to the determined first identifier, A first resource corresponding to the first identifier is determined from a plurality of sets of the first identifier and the first resource.

Optionally, the first identifier may be indicated in the configuration information of the first resource, and it may be determined that the first resource corresponds to the first identifier according to the configuration information.

The following uses the first resource as the SL BWP as an example:

For example, a first identifier ID1 is configured for SLWP1, and the transmission type corresponding to the first identifier is unicast. Configure SLWP2 with a first identifier ID2, and the transmission type corresponding to the first identifier is multicast. A first identifier ID3 is configured for the SLWP3, and the transmission type corresponding to the first identifier is broadcast. If the transmission type of the sidelink transmission currently performed by the UE is unicast, the UE can perform transmission or reception or perception of the sidelink signal in the corresponding SLBWP1. If the transmission type of the sidelink transmission currently performed by the UE is multicast, the UE can transmit or receive or sense the sidelink signal in the corresponding SL / BWP2. If the transmission type of the sidelink transmission currently performed by the UE is broadcast, the UE can transmit or receive or sense the sidelink signal in the corresponding SL / BWP3.

The following uses the first resource as the SL resource pool as an example:

For example, a first identifier ID1 is configured for the SL resource pool 1, and the transmission type corresponding to the first identifier is unicast. A first identifier ID2 is configured for the SL resource pool 2, and the transmission type corresponding to the first identifier is multicast. A first identifier ID3 is configured for the SL resource pool 3, and the transmission type corresponding to the first identifier is broadcast. If the transmission type of the sidelink transmission currently performed by the UE is unicast, the UE can transmit or receive or sense the sidelink signal in the corresponding SL resource pool 1. If the transmission type of the sidelink transmission currently performed by the UE is multicast, the UE can perform transmission or reception or perception of the sidelink signal in the corresponding SL resource pool 2. If the transmission type of the sidelink transmission currently performed by the UE is broadcast, the UE can perform transmission or reception or perception of the sidelink signal in the corresponding SL resource pool 3.

Optionally, the first resource has a corresponding relationship with the first identifier or transmission type, and according to the corresponding relationship, the network device and / or the UE may determine the first resource corresponding to the first identifier or transmission type.

For example, the network device and / or UE may determine the transmission type corresponding to the first resource according to the sequence of the configured first resources, or the network device and / or UE may determine the transmission type corresponding to the first resource and the first identifier and the transmission type. The correspondence relationship determines a transmission type corresponding to the first resource. Optionally, the sequence of the first resource may be a sequence of information of the first resource in the signaling for configuring the first resource, where the information of the first resource is used to indicate the first resource.

For example, the transmission type corresponding to the sequence of the first resource is unicast, multicast, and broadcast. For example, there is a corresponding relationship between the identifier of the first resource and the transmission type service. For example, the identifier 0 of the first resource corresponds to unicast, the identifier 1 of the first resource corresponds to multicast, and the identifier 2 of the first resource corresponds to broadcast.

For example, the first identifier value corresponding to the sequence of the first resource (the first identifier value may also be the first identifier value set or the first identifier value interval) is the unicast first identifier value, and the multicast first An identifier value is broadcast, and the first identifier value is broadcast. For example, there is a corresponding relationship between the identifier of the first resource and the value of the first identifier. For example, the identifier 0 of the first resource corresponds to the unicast first identifier value, the identifier 1 of the first resource corresponds to the multicast first identifier value, and the identifier 2 of the first resource corresponds to the broadcast first identifier value.

It should be understood that the network device 103 may set the same first resource corresponding to the same first identifier for different UEs, so that multiple UEs share the first resource corresponding to the unified identifier, and the network device 103 may also be independent for different UEs. The UE-specific first resource is correspondingly set to correspond to the same first identifier, so that the first resource corresponding to the first identifier is dedicated to each UE.

Optionally, the correspondence between the first identifier and the first resource may be set in a manner predefined by the system or protocol, or may be sent to the UE through a network device, and the first identifier and the first identifier may be determined through the signaling. Correspondence between resources. Specific signaling can be pre-configured signaling, system information, RRC signaling. Or the signaling can be high-level signaling, or it can be physical layer signaling, such as control information. When the correspondence between the first identifier and the first resource is set through signaling, it may also be implemented as indicating the first resource corresponding to the first identifier through signaling or indicating the first identifier corresponding to the first resource through signaling.

The pre-configured signaling may refer to a signaling configured by a system or an operator, or a signaling predefined by a system or a protocol.

When setting the correspondence between the first identifier and the first resource, assuming that there are N first resources available for sidelink transmission, and that there are M different first identifiers, the first identifier and the first identifier can be determined according to the following method Correspondence of a resource: According to the identifier (number) of the first resource, the N first resources are divided into M groups, and each group of the first resources corresponds to a first identifier.

If the numbers of the N first resources are 0 to N-1, the base station and / or UE may be grouped as follows according to the numbers of the first resources, and the first resources of the numbers 0 to [N / M] are the first group. , The first resource from the number [N / M] +1 to the number [2N / M] is the second group, ..., the number [(N * (M-1)) / M] +1 to the number N-1 The first resource is the M group; or, the first resource numbered 0 to [N / M] -1 is the first group, and the first resource numbered [N / M] to the number [2N / M] is the second resource. Group, ..., the first resource numbered from [(N * (M-1)) / M] to number N-1 is the M group; or the first resource numbered from 0 to [N / M] is the first group 1 group, the first resource numbered [N / M] +1 to [2N / M] +1 is the second group ..., numbered [(N * (M-1)) / M] +1 to number N The first resource of -1 is the M group. In the above example, M and N are positive integers, [x] represents rounding operation on x, which can be rounded up or down, and a / b means a divided by b.

In the following, the method of setting the correspondence between the first identifier and the transmission type is described by taking the first identifier as the RNTI as an example:

The range of RNTI values can be divided into three intervals, each interval corresponding to a transmission type, wherein each interval can include one or more consecutive RNTI values. Specifically, the RNTI value interval x1 to x2 corresponds to a unicast transmission type, where x2 is greater than or equal to x1. The RNTI value range y1 to y2 corresponds to the multicast transmission type, where y2 is greater than or equal to y1. The RNTI value range z1 to z2 corresponds to the broadcast transmission type, where z2 is greater than or equal to z1. The values of x1, x2, y1, y2, z1, and z2 can be integers from 0 to 65535, or other values.

For another example, three sets of RNTI values can be set, and the three sets of RNTI values each correspond to a transmission type, where each set can include one or more RNTI values. For example, the RNTI value set {x1 ', x2', x3 ', ...} corresponds to the unicast transmission type, and the RNTI value set {y1', y2 ', y3', ...} corresponds to the multicast transmission type, and the RNTI takes The value set {z1 ', z2', z3 ', ...} corresponds to the transmission type of the broadcast, where x1', x2 ', x3', y1 ', y2', y3 ', z1', z2 ', z3' The range can be an integer from 0 to 65535, or other values.

The foregoing method of setting the correspondence between the first resource and the first identifier and the correspondence between the first identifier and the transmission type is merely an example, and this application does not exclude setting the above correspondence by other methods.

In addition, the embodiment of the present application does not limit the setting of the above correspondence relationship to the network device 103. For example, the above correspondence relationship may be configured by the UE 101 manufacturer and configured in the UE 101 before the UE 101 leaves the factory, or the above correspondence relationship may be The manufacturer server sends the UE 101 to the UE 101 after the UE 101 is powered on, and the network device 103 can also obtain the above correspondence from the manufacturer. In addition, the above correspondence may also be configured by the wireless network operator and sent to the UE 101 after the UE 101 is turned on. The network device 103 may also obtain the above correspondence from the wireless network operator.

It should be understood that, in any of the possible implementations of S101 and S102 and S101 and S102 implemented by the UE 101 above, the steps performed by the UE 101 may also be performed by the UE 102, that is, the UE 101 and the UE 102 are interchanged with each other, in other words In other words, the UE 102 may determine the correspondence between the first resource and the first identifier by using the method shown in the foregoing embodiment, and perform sidelink transmission with the UE 101 on the first resource.

In the following, with reference to FIG. 6, taking the wireless communication system 110 shown in FIG. 1 as an example, if UE 101 is a transmitting device of sidelink and UE 102 is a receiving device in sidelink transmission, the communication method provided in the embodiment of the present application will be described. The method includes the following steps:

S201: The UE 102 determines a correspondence between a first resource and a first identifier;

S202: The UE 102 performs sidelink transmission with the UE 101 in the first resource, where the transmission type of the sidelink transmission corresponds to the first identifier, the first identifier corresponds to the first resource, and the transmission type of the side link transmission is unicast, group Broadcast or broadcast.

When the steps shown in S202 are implemented by the UE 102 as the receiving end device, the UE 102 can blindly detect the sidelink control information (sidelink control information) on the first resource and receive the data sent by the UE 101 according to the sidelink control information.

With the above method, for example, the method involved in FIG. 5 or FIG. 6, sidelink transmission between the UE 101 and the UE 102 can be performed in the first resource.

Exemplarily, the configuration information sent by the network device 103 may further include one or more of transmission type indication information, frame structure parameters, UE capability parameters, sensing window period, sensing threshold, or priority threshold. For example, the configuration information involved in the embodiments of the present application may include a first identifier, transmission type indication information, and frame structure parameters. As another example, in addition to the first identifier and the first resource corresponding to the first identifier, the configuration information involved in the embodiments of the present application may include transmission type indication information, frame structure parameters, UE capability parameters, sensing window period, and perception. Thresholds and priority thresholds, or any one or a combination of transmission type indication information, frame structure parameters, UE capability parameters, sensing window period, sensing thresholds, or priority thresholds. It should be understood that the information that may be included in the above configuration information is only an example. In specific implementation, the network device 103 may also carry the information not listed above in the configuration information according to the configuration needs of the UE 101 or UE 102.

Transmission type indication information refers to information used to indicate the type of transmission, such as information and identification used to indicate whether the type of transmission is unicast, multicast, or broadcast. The transmission type indication information may have a corresponding relationship with the first resource, so that it can be used by the UE 101 to determine the first resource for the sidelink transmission of the UE 101 and the UE 102 according to the transmission type of the side 101 transmission of the UE 101 and the UE 102. Taking the first resource as the BWP as an example, for example, the network device 103 configures the transmission type indicated by the transmission type indication information corresponding to BWP 1 as unicast transmission, the transmission type indicated by the transmission type indication information corresponding to BWP 2 is multicast transmission, and BWP 3 The transmission type indicated by the corresponding transmission type indication information is broadcast transmission. If the sidelink transmission currently performed by UE 101 and UE 102 is a unicast transmission type, UE 101 may perform sidelink transmission in BWP1 corresponding to the unicast transmission type.

The frame structure parameters, for example, the configuration information of the first resource may include a subcarrier interval (SCS) and / or a cyclic prefix length (CP) corresponding to the first resource. For example, when the delay requirement of the sidelink transmission corresponding to the first resource is high, when the subcarrier interval parameter can be carried in the configuration information, the subcarrier interval indicated by the subcarrier interval parameter can be relatively large, such as 60 kHz, 120 kHz, and the like. When the subcarrier interval parameter is carried in the configuration information when the delay requirement is low, the subcarrier interval indicated by the subcarrier interval parameter can be relatively small, such as 15kHz, 30kHz, and the like. Through this method, a variety of frame structure parameters (numerologies) can be supported for sidelink transmission, thereby meeting the delay requirements of different services. The multiple first resources involved in the embodiments of the present application may overlap, may not overlap, or may partially overlap, and different first parameters may be configured for different first resources to implement transmission delays of different transmission types. demand.

Optionally, the frame structure parameters can also be referred to simply as parameters or parameter sets. In the standard discussion, it can be called numerology, which is a set of parameters representing the frame structure, including at least the subcarrier interval and / or cyclic prefix (CP). . Optionally, the frame structure parameter may further include parameters such as the number of symbols included in one subframe, or the number of symbols included in one slot. Optionally, different frequency bands may use different parameters of the frame structure, that is, different frequency bands may use different subcarrier intervals (for example, 15 kHz, 30 kHz, or 60 kHz, etc.) and different CPs (for example, normal CP, normal CP, NCP; extended CP, ECP). Of course, different frequency bands can also use the same frame structure parameters, and the same frequency band can also use different frame structure parameters.

UE capability parameter, the UE capability parameter may be processing time, wherein the processing time may refer to the processing time of the UE receiving control information, the processing time of receiving data, sending an acknowledgement (ACK) character or a negative character (negative acknowledgement (NACK) processing time, or processing time of transmitted data. For example, the processing time may refer to the processing time of receiving data, that is, the time from when the UE receives data to the feedback ACK / NACK, or it may refer to the processing time of sending data, that is, the time from when the UE receives control information to sending data. For example, during unicast transmission, the processing time is relatively high. At this time, the processing time parameter configured for the UE 101 may be capability # 2, as shown in Table 2. For multicast or broadcast transmission, the processing time is relatively low. The processing time parameter configured for UE 101 at this time may be capability # 1, as shown in Table 1.

For example, the processing time for receiving data can be as follows:

Table 1 Parameter table corresponding to receiving data processing time capability 1

Table 2 Parameter table corresponding to receiving data processing time capability 2

子载波间隔μSubcarrier spacing μ	数据解码时间N1[符号]Data decoding time N1 [symbol]
00	33
11	4.54.5
22	9for frequency range 19for frequency frequency 1

Perceived window period refers to the window or window period in which the first resource is sensed. The UE can detect resources in the window or window period. If the signal received power of a resource within the window or window period is less than a certain threshold, the first resource can be considered. This resource in can be used as a candidate resource for sidelink transmission, to avoid excessively occupying the resource determined by perception.

Perceived threshold can refer to the power threshold of a resource that can be used as a candidate for sidelink transmission when sensing a resource. If the signal received power of a perceived resource is less than (less than or equal to) the threshold, the resource can The resource is considered as a candidate resource; if the signal received power of the perceived resource is greater than or equal to (greater than) the threshold, the resource can be considered as a candidate resource. Therefore, when the UE 101 perceives the first resource, it can select a resource whose receiving power meets the perceptual threshold according to the perceptual threshold parameter.

Priority threshold refers to when the signals of the universal user and network air interface (universal user interface to Uu air interface) and sidelink air interface (that is, the air interface corresponding to sidelink transmission) are transmitted simultaneously (which can include sending and / or receiving), It is used to determine whether to transmit Uu air interface or sidelink air interface first. If the priority of transmission of sidelink air interface is greater than (or greater than or equal to) this priority threshold, Uu air interface transmission will be given priority, otherwise it will be given priority. Perform sidelink air interface transmission; or, if the priority of the sidelink air interface transmission is less than (or less than or equal to) the priority threshold, the Uu air interface transmission is preferentially performed; otherwise, the sidelink air interface transmission is preferentially performed. The Uu air interface is used for communication between the UE and the network equipment. Based on the priority threshold configuration, the UE 101 can determine the priority of the data transmission of the Uu air interface and the sidelink air interface according to the priority threshold, and then process the data transmission with higher priority first.

Optionally, the foregoing configuration information may refer to configuration information of the first resource. Specifically, the network device may configure one or more first resources to the terminal device. One first resource may correspond to one configuration information.

Optionally, different first resources may be configured with different above-mentioned parameters. Realize the transmission requirements of different service transmission types.

In a feasible implementation manner, when the UE 101 performs sidelink transmission, it may request the network device 103 to configure its resources for sidelink transmission with the UE 102. The UE 101 may send a first request to the network device 103, and the first request may instruct the UE 101 and the UE 102 to perform a sidelink transmission transmission type, such as carrying a first identifier corresponding to the transmission type. The network device 103 may configure a second resource for sidelink transmission by the UE 101 and the UE 102 from the first resource corresponding to the first identifier, and indicate the second resource to the UE 101 through the first scheduling information. The second resource is used for sidelink transmission between the UE 101 and the UE 102. The second resource here may be a subchannel or a resource block in the first resource.

In an implementation, the network device 103 may send a PDCCH carrying the first scheduling information. The first scheduling information may only indicate subchannel information or resource block information of the second resource, and no longer need to indicate the information of the first resource. The UE 101 may perform a blind detection based on the first resource corresponding to a first identifier, and carry it when detected. The PDCCH of the first scheduling information determines a second resource from the first resource according to the indication of the first scheduling information, and in the second resource, the UE 101 performs sidelink transmission of a transmission type corresponding to the first identifier. With this method, the UE 101 does not need to blindly check all the first resources, and reduces the overhead.

For example, when detecting the DCI at the transmitting end, the DCI may be blindly detected for the first identification of different transmission types. If the transmission type of the sidelink transmission requested by the UE is unicast, the DCI is blindly detected using the first identifier corresponding to the unicast transmission type. If the transmission type of the sidelink transmission requested by the UE is multicast, the DCI is blindly detected using the first identifier corresponding to the multicast transmission type. If the transmission type of the sidelink transmission requested by the UE is broadcast, the DCI is blindly detected using the first identifier corresponding to the broadcast transmission type.

When sending the first scheduling information, the network device 103 may send a physical downlink control channel (physical downlink control channel, PDCCH) carrying DCI to the UE 101, where the DCI includes first scheduling information, and the first scheduling information may be used for The first scheduling information indicating the second resource may be determined by the UE 101 according to the received PDCCH, where the demodulation reference signal of the PDCCH is determined according to the first identifier. The demodulation reference signal here may be a demodulation reference signal (DMRS) corresponding to the PDCCH. The DMRS corresponding to the PDCCH is used to perform channel estimation, and the channel estimation result may be used to demodulate the PDCCH. The DMRS corresponding to the PDCCH may be transmitted together with the PDCCH.

Optionally, when determining the DMRS corresponding to the PDCCH, the network device 103 may determine the initialization value of the interference randomization sequence of the DMRS sequence according to the first identifier. For example, the formula for generating the initialization value of the interference randomization sequence c _init according to the RNTI may be as follows: Show:

Where l is the symbol number in the time slot,

Is the slot number in the radio frame, and N _ID may refer to the first identifier, such as RNTI, (a) mod (b) means calculating the remainder of dividing a by b.

Optionally, when detecting the PDCCH, the UE 101 may determine the DMRS according to the same manner as described above, and demodulate the PDCCH according to the DMRS.

In addition, the network device 103 may also perform cyclic redundancy check (cyclic redundancy check, CRC) on the PDCCH according to the first identifier when transmitting the PDCCH.

Optionally, when performing CRC scrambling, the initialization value of the scrambling sequence may be determined according to the first identifier. For example, the formula for generating the initialization value of the scrambling sequence c _init according to the RNTI may be as follows:

c _init = (N _ID ) mod2 ³¹

Wherein, N _ID may refer to a first identifier, such as RNTI, and (a) mod (b) represents calculating a remainder of a divided by b.

Optionally, when the UE 101 detects the PDCCH, the initial value of the scrambling sequence of the control information can be determined according to the same method, and the PDCCH is descrambled according to the scrambling sequence. If the decoding is successful, and the CRC is verified, the UE is explained 101 successfully receives the first scheduling information carried by the PDCCH.

It should be understood that, when sending the PDCCH, the network device 103 may also perform the scrambling sequence initialization value generation of the DMRS according to the foregoing manner, and perform the CRC scrambling of the PDCCH according to the foregoing manner. For a specific manner, reference may be made to a method for generating a scrambling sequence initialization value of the DMRS and a method for generating a scrambling sequence initialization value of the PDCCH. I will not repeat them here.

Exemplarily, the UE 101 may also indicate the second resource to the receiving-end device UE 102 through the second scheduling information, where the second scheduling information may be sidelink control information.

In implementation, the UE 101 may send a physical side link control channel (PSCCH) carrying the second scheduling information on the first resource to which the second resource belongs. The first scheduling information may only indicate subchannel information or resource block information of the second resource, and no longer need to indicate information of the first resource. The UE 102 may perform a blind PSCCH detection on the first resource corresponding to a first identifier, and To the PSCCH carrying the second scheduling information, and determining the second resource from the first resource according to the second scheduling information. The sidelink transmission of the transmission type corresponding to the first identifier is performed in the second resource, so that the UE 102 does not need to blindly check all the first resources to reduce the overhead.

Optionally, when the sending UE (sending terminal) sends the SCI, the first resource is selected according to the first identifier or transmission type. Optionally, when the SCI is sent, the first identifier is used for CRC scrambling.

For example, when the sending UE sends the SCI, the SCI may be scrambled with the first identifier corresponding to the different transmission type for the sidelink transmission of different transmission types. If the transmission type of the sidelink transmission sent by the UE is unicast, the SCI is sent in the first resource 1, and the CRC of the SCI is scrambled with the unicast or the first identifier corresponding to the first resource 1. If the transmission type of the sidelink transmission sent by the UE is multicast, the SCI is sent in the first resource 2, and the CRC of the SCI is scrambled by using the multicast or the first identifier corresponding to the first resource 2. If the transmission type of the sidelink transmission sent by the UE is broadcast, the SCI is sent in the first resource 3, and the CRC of the SCI is scrambled with the broadcast or the first identifier corresponding to the first resource 3. And so on.

Optionally, when receiving the SCI, the receiving UE (receiving terminal) also detects the SCI based on the first identifier corresponding to the first resource where the SCI is located. If the SCI is detected as the SCI of the UE, the UE It can be determined that the information of the subchannel (or RB resource block) in the SCI is for the first resource corresponding to the first identifier of the SCI.

The receiving UE (receiving terminal) may perform a blind detection SCI under a corresponding first identifier for different first resources. It is not necessary to detect all first resources for one first identity. Or the receiving UE does not need to blindly check the DCI under various first identities for a first resource.

Optionally, when the receiving UE (receiving terminal) UE detects the SCI, the SCI may be blindly detected for the first identifiers of different transmission types. If the UE detects the SCI in the first resource 1, the SCI is blindly detected using the first identifier corresponding to the first resource 1. If the UE detects the SCI in the first resource 2, the SCI is blindly detected using the first identifier corresponding to the first resource 2. If the UE detects the SCI in the first resource 3, the SCI is blindly detected using the first identifier corresponding to the first resource 3. And so on.

If the receiving UE successfully detects the SCI in the first resource 1, it can be determined that the information of the subchannel (or RB resource block) indicated in the SCI is for the first resource corresponding to the SCI.

Optionally, the DMRS corresponding to the PSCCH sent by the UE 101 may be determined according to the first identifier. Specifically, for a manner of determining the DMRS, reference may be made to the foregoing manner of generating the DMRS corresponding to the PDCCH according to the first identifier.

Optionally, when the UE 102 performs a blind detection of the PSCCH, the DMRS may be determined in the same manner, and the PSCCH may be demodulated according to the DMRS.

Optionally, the UE 101 may also perform CRC scrambling on the PSCCH. When performing CRC scrambling, the scrambling sequence initialization value may be generated according to the first identifier. Specifically, for a manner of determining the scrambling sequence, reference may be made to the foregoing method of generating a CRC corresponding to a PDCCH according to the first identifier.

Optionally, when the UE 102 performs a blind detection of the PSCCH, the scrambling sequence initialization value of the control information can be generated according to the same method, and the PSCCH can be descrambled according to the scrambling sequence. The UE 102 successfully receives the second scheduling information carried by the PSCCH.

It should be understood that the above UE 101 sends the SCI to the UE 102 a resource indication method indicating the second resource, which can be applied to the UE 101 after determining the second resource according to the first scheduling information sent by the network device 103, or the UE 101 may determine by other methods After the second resource, if the UE 101 determines the second resource from the first resource through sensing, this application does not specifically limit this.

The following still uses the wireless communication system 110 shown in FIG. 1 as an example, and describes a signal transmission method for sidelink transmission provided by an embodiment of the present application with reference to FIG. 7. In this method, the UE 101 determines the first A second resource in a resource, the method includes the following steps:

S301: The network device 103 sends configuration information to the UE 101 and / or the UE 102, and the configuration information is used to indicate a correspondence between the first identifier and the first resource;

S302: The UE 101 sends a first request to the network device 103 for requesting resources for sidelink transmission from the network device 103. The first request may carry a first identifier, and the first identifier performs sidelink transmission between the UE 101 and the UE 102. Corresponding to the transmission type;

S303: The network device 103 determines a second resource from the first resource corresponding to the first identifier, and the second resource is used for sidelink transmission between the UE 101 and the UE 102;

S304: The network device 103 sends a PDCCH to the UE 101. The PDCCH carries a DCI indicating a second resource. The demodulation reference signal of the PDCCH is determined according to the first identifier.

S305: The UE 101 determines the second resource according to the received DCI;

S306: The UE 101 sends a PSCCH to the UE 102, the PSCCH carries an SCI indicating the second resource, the demodulation reference signal of the PSCCH is determined according to the first identifier, and / or, the PSCCH performs CRC scrambling according to the first identifier;

S307: The UE 102 determines a second resource according to the received SCI.

With the above method, UE 101 and UE 102 can determine the second resource for sidelink transmission. Thereafter, UE 101 and UE 102 can perform sidelink transmission on the second resource, thereby providing a method for determining sidelink according to the transmission type of sidelink transmission. The method of transmission of transmission resources.

Optionally, in step S301, the network device that sends configuration information to the UE 101 and the network device that sends configuration information to the UE 102 may be the same or different. For example, the network device that sends configuration information to UE 101 is network device 103, and the network device that sends configuration information to UE 102 is network device 104.

Optionally, in step S301, the signaling for the network device to send configuration information to the UE 101 and the signaling for the network device to send configuration information to the UE 102 may be the same or different. Specifically, the signaling for sending configuration information may be pre-configured signaling, system information, RRC signaling, and the like. For example, the signaling for sending configuration information to UE 101 is system information, and the information for sending configuration information to UE 102 is pre-configuration signaling.

In a feasible implementation manner, during the sidelink transmission of the UE 101, the second resource may also be determined from the first resource in a perceptual manner, and the side resource transmission is performed with the UE 102 on the second resource. The second resource here It can be a subchannel or a resource block in the first resource.

Optionally, the UE 101 determines the perceived first resource according to the transmission type of the sidelink transmission, wherein the transmission type of the sidelink transmission corresponds to a first identifier, and the first identifier corresponds to the first resource.

Specifically, the UE 101 may determine the corresponding first identifier according to the transmission type of the sidelink transmission between the UE 101 and the UE 102, and determine the first resource corresponding to the first identifier, and determine whether some of the first resources are identified by perception. Occupied by other UEs, if not, the UE can perform sidelink transmission on these resources, and the UE 101 can select a second resource from these resources. Thereafter, the UE 101 can indicate the second resource to the UE 102 through the second scheduling information. For the manner in which the UE 101 indicates the second resource to the UE 102 through the second scheduling information, refer to the manner in which the UE 101 indicates the second resource configured by the network device 103 to the UE 102 through the second scheduling information. To save space, here is not More details.

For example, the resource identifier of the first resource and the first identifier have the following correspondence:

Take the first resource as SL and BWP as an example: SL BWP 0 corresponds to the first identifier corresponding to unicast transmission, SL BWP 1 corresponds to the first identifier corresponding to multicast transmission, and SL BWP 2 corresponds to the first identifier corresponding to broadcast transmission Logo. When UE101 and UE102 perform unicast transmission, UE101 can perceive at SLBWP0, when UE101 and UE102 perform multicast transmission, UE101 can perceive at SLBWP1, and when UE101 and UE102 When performing broadcast transmission, the UE 101 can sense in SL BWP 2.

The following uses the first resource as the SL resource pool as an example: SL resource pool 0 corresponds to the first identifier corresponding to unicast transmission, SL resource pool 1 corresponds to the first identifier corresponding to multicast transmission, and SL resource pool 2 corresponds to broadcast transmission The corresponding first identifier. When UE 101 and UE 102 perform unicast transmission, UE 101 can perceive in SL resource pool 0. When UE 101 and UE 102 perform multicast transmission, UE 101 can perceive in SL resource pool 1. When UE 101 and When UE 102 performs broadcast transmission, UE 101 can perceive in SL / BWP2.

Exemplarily, if the configuration information sent by the network device 103 to the UE 101 also includes a sensing window period and / or a sensing threshold corresponding to the first resource, when the UE 101 senses the first resource, the UE 101 may use the sensing window period and / Or the sensing threshold determines the second resource from the first resource.

The following still uses the wireless communication system 110 shown in FIG. 1 as an example, and describes a signal transmission method for sidelink transmission provided by an embodiment of the present application with reference to FIG. The method includes the following steps:

S401: The network device 103 sends configuration information to the UE 101 and / or the UE 102, and the configuration information is used to indicate a correspondence between the first identifier and the first resource;

S402: The UE 101 senses the first resource, and determines the second resource from the first resource, where the first resource corresponds to the first identifier, and the first identifier is the first corresponding to the transmission type of the sidelink transmission between the UE 101 and the UE 102. An identifier, and the second resource is used for sidelink transmission between UE 101 and UE 102;

S403: The UE 101 sends a PSCCH to the UE 102, the PSCCH carries the SCI indicating the second resource, the demodulation reference signal of the PSCCH is determined according to the first identifier corresponding to the transmission type, and / or, the PSCCH is based on the first identifier corresponding to the transmission type CRC scrambling;

S404: The UE 102 determines a second resource according to the received SCI.

The following still uses the wireless communication system 110 shown in FIG. 1 as an example, and describes a signal transmission method for sidelink transmission provided by an embodiment of the present application with reference to FIG. 9. In this method, the UE 102 determines the second resource in the first resource by detecting the SCI. The method includes the following steps S501 to S503:

S501: The network device 104 sends configuration information to the UE 102, where the configuration information is used to indicate a correspondence between the first identifier and the first resource;

S502: The UE 102 detects the PSCCH in the first resource according to the first identifier, and the PSCCH carries an SCI indicating the second resource. The first identification corresponds to a first resource. Optionally, the demodulation reference signal of the PSCCH is determined by the first identifier, and / or, the PSCCH performs CRC scrambling according to the first identifier; where the SCI may be sent by the UE 101, and the second resource may be passed by the network device 103. The first scheduling information is configured for the UE 101, and the second resource may also be determined after the UE 101 senses the first resource.

Optionally, a second resource is determined from the first resource, where the first resource corresponds to the first identifier, and the first identifier is a first identifier corresponding to a transmission type of sidelink transmission between the UE 101 and the UE 102, and the second Resources are used for sidelink transmission between UE 101 and UE 102;

S503: The UE 102 determines a second resource according to the received SCI.

With the above method, the UE 102 can determine the second resource for sidelink transmission. Thereafter, the UE 101 and UE 102 can perform sidelink transmission on the second resource, thereby providing a transmission for determining the sidelink transmission according to the transmission type of the sidelink transmission. Resource approach.

In the embodiment of the present application, the method involved between the UE 101 and the UE 102 may also be independently protected. For example, the UE 101 sends a PSCCH to the UE 102, and the PSCCH carries an SCI indicating a second resource among the first resources. The UE 102 determines the second resource according to the received SCI. UE 101 and UE 102 perform side-link data transmission, and the transmission type of the side-link transmission corresponds to the first identifier, and the first identifier corresponds to the first resource; the transmission type of the side-link transmission is Unicast, multicast, or broadcast. Optionally, the demodulation reference signal of the PSCCH is determined according to the first identifier, and / or, the PSCCH performs CRC scrambling according to the first identifier.

The methods provided in the embodiments of the present application are described above. In order to implement the functions in the above methods provided in the embodiments of the present application, UE 101 (such as the second terminal device involved in the embodiment of the present application, and the transmitting device for sidelink transmission), and UE 102 (such as the one involved in the embodiment of the present application) The first terminal device, the receiving end device for sidelink transmission), or the network device 103 may include a hardware structure and / or a software module, and implement the foregoing functions in the form of a hardware structure, a software module, or a hardware structure plus a software module.

FIG. 10 is a schematic structural diagram of a communication device 1000. The communication device 1000 may be a terminal device and may be used to execute the steps performed by UE 101 and UE 102 in the foregoing method embodiment; the communication device 1000 may also be a network device and used to execute the network device 103 or the network in the method embodiment described above. Steps performed by the device 104. The communication device 1000 may be a hardware structure, a software module, or a hardware structure plus a software module. The communication device 1000 may be implemented by a chip system. In the embodiment of the present application, the chip system may be composed of a chip, and may also include a chip and other discrete devices.

The communication device 1000 may include a processing module 1001 and a transceiving module 1002. The transceiver module 1002 is used for the communication device 1000 to communicate with other modules, and may be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device that can implement communication. The processing module 1001 is used for the communication device 1000 to execute a processing process, such as generating a message, determining a first resource, or a second resource, which may be a processor.

Exemplarily, if the communication device 1000 is a UE 101, the transceiver module 1002 may be used to execute S102 in FIG. 5, S202 in FIG. 6, S302, S306 in FIG. 7, and S403 in FIG. 8 in the embodiment of the present application. Steps, and / or other communication procedures used to support UE 101 in the technology described herein. The processing module 1001 may be configured to execute the steps shown in S101 in FIG. 5, S305 in FIG. 7, and S402 in FIG. 8 in the embodiments of the present application, and / or to support other processing procedures related to the UE 101 in the technology described herein. Wherein, all relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, which will not be repeated here.

Exemplarily, if the communication device 1000 is a UE 102, the transceiver module 1002 may be used to perform the steps in S102 shown in FIG. 5 and S202 shown in FIG. 6, and / or used to execute the UE 102 in the technology described herein. Other communication processes involved, such as for the communication device 1000 to receive the SCI sent by the UE 101 through the steps shown in S306 in FIG. 7 or S403 in FIG. 8 and / or receive the network device 103 through S301 and FIG. 8 in FIG. 7 The configuration information sent in the steps shown in S401 or S501 in FIG. 9. The processing module 1001 may be configured to execute the steps shown in S201 in FIG. 6, S307 in FIG. 7, S404 in FIG. 8, S502 and S503 in FIG. 9 in the embodiment of the present application, and / or to support the steps described herein. Other processes involved in UE 102 in the technology. Wherein, all relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, which will not be repeated here.

It should be understood that the logical architecture shown in the above communication device 1000 may be implemented by the UE 300 shown in FIG. 3, for example, the function of the processing module 1001 may be implemented by the processor 301 in the UE 300, and the transceiver in the UE 300 302. The antenna 303 implements the function of the transceiver module 1002, so that the UE 300 having the structure shown in FIG. 3 can implement the functions of the UE 101 and / or UE 102 shown in the embodiment of the present application.

Exemplarily, if the communication device 1000 is the network device 103 or the network device 104, the transceiver module 1002 may be configured to perform the steps shown in S301, S304 in FIG. 7, S401 in FIG. 8, and S501 in FIG. 9 in the embodiment of the present application, and It is used to support other communication processes involved in the network device 103 or the network device 104 in the technology described herein. The processing module 1001 may be configured to execute the steps shown in S303 shown in FIG. 7 in the embodiment of the present application, and / or used to support other processing processes involved in the network device 103 or the network device 104 in the technology described herein. Wherein, all relevant content of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, which will not be repeated here.

It should be understood that the logical architecture shown in the above communication device 1000 may be implemented by the base station 400 shown in FIG. 4. For example, the function of the processing module 1001 may be implemented by the processor 401 in the base station 400 and the transceiver in the base station 400. 402. The antenna 403 implements the functions of the transceiver module 1002, so that the base station 400 having the structure shown in FIG. 4 can implement the functions of the network device 103 or the network device 104 shown in the embodiment of the present application.

The above module division of the communication device 1000 is schematic, and it is only a logical function division. In actual implementation, there may be another division manner. In addition, each functional module in each embodiment of the present application may be integrated into one process. In the device, it can also exist separately physically, or two or more modules can be integrated into one module. The above integrated modules may be implemented in the form of hardware or software functional modules.

Referring to FIG. 11, a communication device 1100 according to an embodiment of the present application is shown. The communication device 1100 may be a network device or a terminal device, which can implement the UE 101 in the method provided by the embodiment of the present application (such as the embodiment of the present application). The functions of the second terminal device involved, the transmitting end device for sidelink transmission), the UE 102 (such as the first terminal device involved in the embodiment of this application, and the receiving end device for sidelink transmission), or the network device 103 or network device 104. The communication device 1100 may be a chip system.

The communication device 1100 may include a communication interface 1110 for communicating with other devices through a transmission medium. The communication interface may be a circuit, a device, an interface, a bus, a software module, a transceiver, or any other device that can implement communication.

The communication interface 1110 may be used to implement a function of the transceiver module 1002 in the communication device 1000.

The communication device 1100 may further include at least one processor 1120, configured to implement or support the communication device 1100 to implement the functions performed by the UE 101, UE 102, network device 103, or network device 104 in the method provided by the embodiment of the present application.

The processor 1120 may be configured to implement a function of the processing module 1001 in the communication device 1000.

The communication device 1100 may further include at least one memory 1130 for storing program instructions and / or data. The memory 1130 and the processor 1120 are coupled. The coupling in the embodiments of the present application refers to indirect coupling or communication connection between devices, units or modules, which may be electrical, mechanical or other forms, and are used for information interaction between devices, units or modules. The processor 1120 may operate in cooperation with the memory 1130. The processor 1120 may execute program instructions stored in the memory 1130. At least one memory 1130 of the at least one memory 1130 may be included in the processor 1120.

The embodiments of the present application are not limited to the specific connection medium between the communication interface 1110, the processor 1120, and the memory 1130. In the embodiment of the present application, the memory 1130, the processor 1120, and the communication interface 1110 are connected by a bus 1140 in FIG. 11. The bus is indicated by a thick line in FIG. 11. The connection modes between other components are only schematically illustrated. It is not limited. The bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of representation, only one thick line is used in FIG. 11, but it does not mean that there is only one bus or one type of bus.

It should be understood that the architecture shown in the above communication device 1100 may be implemented by the UE 300 shown in FIG. 3, for example, the function of the processor 1120 may be implemented by the processor 301 in the UE 300, and the memory 1130 may be implemented by the memory 304 in the UE 300 The functions of the communication interface 1110 are implemented by the transceiver 302 and the antenna 303 in the UE 300, so that the UE 300 having the structure shown in FIG. 3 can implement the UE 101 and / or the UE 102 shown in the embodiment of the present application. Functions. In addition, the architecture shown in the above communication device 1100 may be implemented by the base station 400 shown in FIG. 4, for example, the function of the processor 1120 may be implemented by the processor 401 in the base station 400, and the memory 1130 may be implemented by the memory 405 in the base station 400. The function and the function of the communication interface 1110 are implemented by the transceiver 402 and the antenna 403 in the base station 400, so that the base station 400 having the structure shown in FIG. 4 can implement the network device 103 and / or the network device 104 shown in the embodiment of the present application. Has features.

In the embodiments of the present application, the processor may be a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which may implement or The disclosed methods, steps and logic block diagrams in the embodiments of the present application are executed. A general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in combination with the embodiments of the present application may be directly implemented by a hardware processor, or may be performed by a combination of hardware and software modules in the processor.

In the embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk (HDD) or a solid-state drive (SSD), etc., and may also be a volatile memory (volatile memory), such as Random-access memory (RAM). The memory is any other medium that can be used to carry or store desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto. The memory in the embodiment of the present application may also be a circuit or any other device capable of implementing a storage function, for storing program instructions and / or data.

An embodiment of the present application further provides a computer-readable storage medium including instructions that, when run on a computer, cause the computer to execute the method in the embodiment of the present application.

An embodiment of the present application further provides a computer program product including instructions that, when run on a computer, cause the computer to execute the method in the embodiment of the present application.

An embodiment of the present application provides a chip system. The chip system includes a processor, and may further include a memory, for implementing the method in the embodiment of the present application. The chip system can be composed of chips, and can also include chips and other discrete devices.

An embodiment of the present application provides a communication system. The communication system includes the foregoing network device and the foregoing terminal device.

The methods provided in the embodiments of the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions according to the embodiments of the present application are generated. The computer may be a general-purpose computer, a special-purpose computer, a computer network, a network device, a user equipment, or another programmable device. The computer instructions may 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 instructions may be from a website site, computer, server, or data center Transmission to another website site, computer, server, or data center through wired (such as coaxial cable, optical fiber, digital subscriber line (DSL), or wireless) (such as infrared, wireless, microwave, etc.). The computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, a data center, and the like that includes one or more available medium integration. The available medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a digital video disc (DVD), or a semiconductor medium (for example, an SSD), or the like.

Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the scope of the present application. In this way, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and variations.

Claims

A signal transmission method, comprising:

Performing side-link transmission with a first terminal device in a first resource, the transmission type of the side-link transmission corresponding to a first identifier, the first identifier corresponding to the first resource, and the side-link transmission The transmission types include unicast, multicast, or broadcast.
The method of claim 1, further comprising:

Receiving configuration information from a network device, where the configuration information is used to indicate a correspondence between the first identifier and the first resource.
The method according to claim 1 or 2, further comprising:

Sending a first request to a network device for requesting resources for side-link transmission with the first terminal device, where the first request includes the first identifier;

The performing side-link transmission with the first terminal device in the first resource includes:

Receiving first scheduling information from the network device, where the first scheduling information is used to configure a second resource from the first resource;

Perform side-link transmission with the first terminal device in the second resource.
The method according to claim 3, wherein the receiving the first scheduling information from the network device comprises:

Receiving a physical downlink control channel PDCCH from the network device, where the PDCCH carries the first scheduling information;

The demodulation reference signal of the PDCCH is determined according to the first identifier.
The method according to claim 3, wherein the receiving the first scheduling information from the network device comprises:

Receiving a physical downlink control channel PDCCH from the network device, where the PDCCH carries the first scheduling information, and a cyclic redundancy check CRC of the PDCCH is scrambled according to the first identifier.
The method according to claim 1 or 2, further comprising:

Sensing a second resource from the first resource;

The performing side-link transmission with the first terminal device in the first resource includes performing side-link transmission with the first terminal device in the second resource.
The method according to any one of claims 3 to 6, further comprising:

Sending second scheduling information to the first terminal device, where the second scheduling information is used to configure the second resource from the first resource.
The method according to claim 7, wherein the sending the second scheduling information to the first terminal device comprises:

Sending a side link control channel to the first terminal device, where the side link control channel carries the second scheduling information;

The demodulation reference signal of the side link control channel is determined according to the first identifier.
The method according to claim 7, wherein sending the second scheduling information to the first terminal device comprises:

Sending a side link control channel to the first terminal device, where the side link control channel carries the second scheduling information, and a CRC of the side link control channel is scrambled according to the first identifier .
A signal transmission method, comprising:

Performing side-link transmission with a second terminal device in a first resource, the transmission type of the side-link transmission corresponding to a first identifier, the first identifier corresponding to the first resource, and the side-link transmission The transmission types include unicast, multicast, or broadcast.
The method of claim 10, further comprising:

Receiving configuration information from a network device, where the configuration information is used to indicate a correspondence between the first identifier and the first resource.
The method according to claim 10 or 11, further comprising:

Receiving second scheduling information from a second terminal device, where the second scheduling information is used to configure a second resource from the first resource;

The performing side-link transmission with the second terminal device in the first resource includes performing side-link transmission with the second terminal device in the second resource.
The method according to claim 12, wherein receiving the second scheduling information from the second terminal device comprises:

Receiving a side link control channel from the second terminal device, where the side link control channel carries the second scheduling information;

The demodulation reference signal of the side link control channel is determined according to the first identifier.
The method according to claim 12, wherein receiving the second scheduling information from the second terminal device comprises:

Receiving a side link control channel from the second terminal device, the side link control channel carrying the second scheduling information, and a cyclic redundancy check CRC of the side link control channel according to the first Identification is scrambled.
A signal transmission method, comprising:

Send configuration information to the first terminal device and / or the second terminal device, where the configuration information is used to indicate the correspondence between the first identifier and the first resource, and the first resource is used for the first terminal device and the second terminal device Perform side-link transmission;

The transmission type of the side-link transmission corresponds to the first identifier;

The transmission type of the side-link transmission includes unicast, multicast, or broadcast.
The method according to claim 15, further comprising:

Receiving a first request from the second terminal device, the first request being used to request a second resource for side-link transmission, the side-link transmission being the first terminal device and the second Side link transmission between terminal devices, the first request includes the first identifier;

Sending first scheduling information to the second terminal device, where the first scheduling information is used to configure the second resource from the first resource.
The method according to claim 16, wherein sending the first scheduling information to the second terminal device comprises:

Sending a physical downlink control channel PDCCH to the second terminal device, where the PDCCH carries the first scheduling information;

The demodulation reference signal of the PDCCH is determined according to the first identifier.
The method according to claim 16, wherein sending the first scheduling information to the second terminal device comprises:

Sending a physical downlink control channel PDCCH to the second terminal device, where the PDCCH carries the first scheduling information, and a cyclic redundancy check CRC of the PDCCH is scrambled according to the first identifier.
An apparatus, which is used for implementing the method according to any one of claims 1 to 9.
A device, comprising a processor and a memory, wherein instructions are stored in the memory, and when the processor calls and executes the instructions, the device is caused to execute the device according to any one of claims 1 to 9. method.
A device, comprising:

The transceiver module is configured to perform side-link transmission with the first terminal device in the first resource, and the transmission type of the side-link transmission corresponds to the first identifier, and the first identifier corresponds to the first resource; The transmission types of side-link transmission include unicast, multicast, or broadcast.
A device characterized by comprising: a processor and a communication interface,

The processor is configured to perform side-link transmission with the first terminal device in the first resource by using the communication interface, and a transmission type of the side-link transmission corresponds to a first identifier, and the first identifier corresponds to the first identifier. The first resource; the transmission type of the side-link transmission includes unicast, multicast, or broadcast.
An apparatus, which is used for implementing the method according to any one of claims 10 to 14.
A device, comprising a processor and a memory, wherein instructions are stored in the memory, and when the processor calls and executes the instructions, the device is caused to execute the device according to any one of claims 10 to 14. method.
A device, comprising:

The transceiver module is configured to perform side-link transmission with the second terminal device in the first resource, and the transmission type of the side-link transmission corresponds to the first identifier, and the first identifier corresponds to the first resource; The transmission types of side-link transmission include unicast, multicast, or broadcast.
A device characterized by comprising: a processor and a communication interface,

The processor is configured to perform side-link transmission with the second terminal device in the first resource by using the communication interface, and a transmission type of the side-link transmission corresponds to a first identifier, and the first identifier corresponds to the first identifier. The first resource; the transmission type of the side-link transmission includes unicast, multicast, or broadcast.
An apparatus, which is used for implementing the method according to any one of claims 15 to 18.
A device, comprising a processor and a memory, wherein instructions are stored in the memory, and when the processor calls and executes the instructions, the device is caused to execute the device according to any one of claims 15 to 18. method.
A device, comprising:

A transceiver module, configured to send configuration information to a first terminal device and / or a second terminal device, where the configuration information is used to indicate a correspondence between a first identifier and a first resource, and the first resource is used for the first terminal device Perform side-link transmission with the second terminal device;

The transmission type of the side-link transmission corresponds to the first identifier;

The transmission type of the side-link transmission includes unicast, multicast, or broadcast.
A device characterized by comprising: a processor and a communication interface,

The processor is configured to use the communication interface to send configuration information to a first terminal device and / or a second terminal device, where the configuration information is used to indicate a correspondence between a first identifier and a first resource, and the first Resources are used for side-link transmission by the first terminal device and the second terminal device;

The transmission type of the side-link transmission corresponds to the first identifier;

The transmission type of the side-link transmission includes unicast, multicast, or broadcast.
A communication system includes the device according to any one of claims 19 to 22, wherein the device according to any one of claims 23 to 26, and the device according to any one of claims 27 to 30.
A computer-readable storage medium, comprising instructions, which when executed on a computer, causes the computer to perform the method according to any one of claims 1 to 18.
A computer program product containing instructions, which, when run on a computer, causes the computer to perform the method according to any one of claims 1 to 18.