WO2023168722A1

WO2023168722A1 - Multi-beam receiving method, multi-beam sending method, and first device

Info

Publication number: WO2023168722A1
Application number: PCT/CN2022/080484
Authority: WO
Inventors: 马腾; 赵振山
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-03-11
Filing date: 2022-03-11
Publication date: 2023-09-14

Abstract

The present application relates to a multi-beam receiving method, a multi-beam sending method, and a first device. The multi-beam receiving method comprises: the first device determines N beams from among K beams to receive a physical sidelink feedback channel (PSFCH), wherein both N and K are positive integers, N is less than or equal to K, the K beams are beams of at least two second devices used for sending the PSFCH, and the at least two second devices are different devices; and the first device receives the PSFCH of the N beams on a first time slot. By using the present application, multi-beam transmission on one time slot is achieved.

Description

Multi-beam reception method, multi-beam transmission method, first device

Technical field

The present application relates to the field of communications, and more specifically, to a multi-beam receiving method, a multi-beam transmitting method, and a first device.

Background technique

In multi-beam reception of sidelinks, for example, for physical sidelink feedback channel (PSFCH) reception of different beams, the terminal equipment can only use one beam to receive PSFCH on one time slot, and cannot use different beams at the same time. Beams are used to receive PSFCHs of different beams, causing some PSFCH reception failures.

How the terminal receives PSFCH from different beams in one time slot is a technical problem to be solved.

Contents of the invention

Embodiments of the present application provide a multi-beam receiving method, a multi-beam transmitting method, and a first device, which can realize multi-beam transmission on one time slot.

This embodiment of the present application provides a multi-beam receiving method, applied to a first device, including:

The first device determines N beams from K beams to receive the PSFCH; the N and the K are positive integers, and the N is less than or equal to the K;

The K beams are beams used by at least two second devices to transmit PSFCH, and the at least two second devices are different devices;

The first device receives the PSFCH of N beams on the first time slot.

Embodiments of the present application provide a multi-beam transmission method, applied to a first device, including:

The first device determines M beams from J beams to transmit physical sidelink control channel (Physical Sidelink Control Channel, PSCCH)/physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH); the M and J are positive Integer, M is less than or equal to J;

The first device sends PSCCH/PSSCH on the M beams;

The sending of PSCCH/PSSCH on M beams is used to obtain the PSFCH in response to the PSCCH/PSSCH.

The embodiment of the present application provides a first device, including:

The first processing unit is configured to determine N beams to receive the PSFCH from K beams; the N and the K are positive integers, and the N is less than or equal to the K; the K beams are at least two second The device is configured to send a beam of PSFCH, and the at least two second devices are different devices;

The first receiving unit is configured to receive the PSFCH of N beams on the first time slot.

The embodiment of the present application provides a first device, including:

The fourth processing unit is used to determine M beams from J beams to transmit PSCCH/PSSCH; the M and the J are positive integers, and the M is less than or equal to the J;

The first sending unit is used to send PSCCH/PSSCH on the M beams; the sending PSCCH/PSSCH on the M beams is used to obtain the PSFCH in response to the PSCCH/PSSCH.

An embodiment of the present application provides a first device, including a processor and a memory. The memory is used to store computer programs, and the processor is used to call and run the computer programs stored in the memory, so that the terminal device executes the method described in the above embodiments of the present application.

The embodiment of the present application provides a chip for implementing the method described in the above embodiment of the present application.

Specifically, the chip includes: a processor, configured to call and run a computer program from a memory, so that the device installed with the chip executes the method described in the above embodiments of the present application.

Embodiments of the present application provide a computer-readable storage medium for storing a computer program. When the computer program is run by a device, the device performs the method described in the above embodiments of the present application.

Embodiments of the present application provide a computer program product, which includes computer program instructions. The computer program instructions cause a computer to execute the method described in the above embodiments of the present application.

An embodiment of the present application provides a computer program, which when run on a computer causes the computer to execute the above method described in the embodiment of the present application.

In this embodiment of the present application, the first device may determine N beams from K beams to receive the PSFCH; the N and the K are positive integers, and the N is less than or equal to the K. The K beams are beams used by at least two second devices to transmit PSFCH, and the at least two second devices are different devices. Therefore, the first device can receive PSFCH of N beams on the first time slot. , can avoid transmission conflicts of multi-beam PSFCH on one time slot, and can realize multi-beam transmission on one time slot.

Description of the drawings

Figure 1 is a schematic diagram of an application scenario according to an embodiment of the present application.

Figure 2 is a schematic flow chart of a multi-beam receiving method according to an embodiment of the present application.

Figure 3 is a schematic flow chart of a multi-beam receiving method according to an embodiment of the present application.

Figure 4 is a schematic flow chart of a multi-beam receiving method according to an embodiment of the present application.

Figure 5 is a schematic flow chart of a multi-beam receiving method according to an embodiment of the present application.

Figure 6 is a schematic flow chart of a multi-beam receiving method according to an embodiment of the present application.

Figure 7 is a schematic flow chart of a multi-beam receiving method according to an embodiment of the present application.

Figure 8 is a schematic flow chart of a multi-beam transmission method according to an embodiment of the present application.

Figure 9 is a schematic flow chart of a multi-beam transmission method according to an embodiment of the present application.

Figure 10 is a schematic flow chart of a multi-beam transmission method according to an embodiment of the present application.

Figure 11 is a schematic flow chart of a multi-beam transmission method according to an embodiment of the present application.

Figure 12 is a schematic flow chart of a multi-beam transmission method according to an embodiment of the present application.

Figure 13 is a schematic diagram of an intranet communication scenario according to an embodiment of the present application.

Figure 14 is a schematic diagram of a partial network coverage sidelink communication scenario according to an embodiment of the present application.

Figure 15 is a schematic diagram of a communication scenario outside network coverage according to an embodiment of the present application.

Figure 16 is a schematic diagram of a side communication scenario with a central control node according to an embodiment of the present application.

Figure 17 is a schematic diagram of a unicast scenario according to an embodiment of the present application.

Figure 18 is a schematic diagram of a multicast scenario according to an embodiment of the present application.

Figure 19 is a schematic diagram of a broadcast scene according to an embodiment of the present application.

Figure 20(a) is a schematic diagram of a time slot structure in which the PSFCH channel is not included in the time slot according to an embodiment of the present application.

Figure 20(b) is a schematic diagram of the time slot structure including the PSFCH channel in the time slot according to an embodiment of the present application.

Figure 21 is a schematic diagram of the time-frequency position of SL CSI-RS according to an embodiment of the present application.

Figure 22(a) is a schematic diagram of an LTE/NR system that does not use analog wave speeds according to an embodiment of the present application.

Figure 22(b) is a schematic diagram of an NR system using simulated wave speed according to an embodiment of the present application.

Figure 23 is a schematic diagram of a TCI state configuration method for PDSCH according to an embodiment of the present application.

Figure 24 is a schematic diagram of multi-beam transmission/reception according to an embodiment of the present application.

Figure 25 is a timing diagram of PSCCH/PSSCH transmission and corresponding PSFCH feedback in multi-beam transmission/reception according to an embodiment of the present application.

Figure 26 is a timing diagram of PSCCH/PSSCH transmission and corresponding PSFCH feedback in an example of multi-beam transmission/reception according to an embodiment of the present application.

Figure 27 is a timing diagram of PSCCH/PSSCH transmission and corresponding PSFCH feedback in another example of multi-beam transmission/reception according to an embodiment of the present application.

Figure 28 is a timing diagram of PSCCH/PSSCH transmission and corresponding PSFCH feedback in another example of multi-beam transmission/reception according to an embodiment of the present application.

Figure 29 is a timing diagram of PSCCH/PSSCH transmission and corresponding PSFCH feedback in another example of multi-beam transmission/reception according to an embodiment of the present application.

Figure 30 is a timing diagram of PSCCH/PSSCH transmission and corresponding PSFCH feedback in another example of multi-beam transmission/reception according to an embodiment of the present application.

Figure 31 is a timing relationship diagram of PSCCH/PSSCH transmission and corresponding PSFCH feedback in another example of multi-beam transmission/reception according to an embodiment of the present application.

Figure 32 is a timing diagram of PSCCH/PSSCH transmission and corresponding PSFCH feedback in another example of multi-beam transmission/reception according to an embodiment of the present application.

Figure 33 is a schematic block diagram of a first device according to an embodiment of the present application.

Figure 34 is a schematic block diagram of a first device according to an embodiment of the present application.

Figure 35 is a schematic block diagram of a communication device according to an embodiment of the present application.

Figure 36 is a schematic block diagram of a chip according to an embodiment of the present application.

Figure 37 is a schematic block diagram of a communication system according to an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), wireless fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

Generally speaking, traditional communication systems support a limited number of connections and are easy to implement. However, with the development of communication technology, mobile communication systems will not only support traditional communication, but also support, for example, Device to Device, D2D) communication, Machine to Machine (M2M) communication, Machine Type Communication (MTC), Vehicle to Vehicle (V2V) communication, or Vehicle to everything (V2X) communication, etc. , the embodiments of the present application can also be applied to these communication systems.

Optionally, the communication system in the embodiment of the present application can be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, a dual connectivity (Dual Connectivity, DC) scenario, or a standalone (Standalone, SA) deployment scenario. Internet scene.

Optionally, the communication system in the embodiment of the present application can be applied to the unlicensed spectrum, where the unlicensed spectrum can also be considered as a shared spectrum; or the communication system in the embodiment of the present application can also be applied to the licensed spectrum, where, Licensed spectrum can also be considered as unshared spectrum.

The embodiments of this application describe various embodiments in combination with network equipment and terminal equipment. The terminal equipment may also be called user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

The terminal device can be a station (ST) in the WLAN, a cellular phone, a cordless phone, a session initiation system (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, or a personal digital processing station. (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or in the future Terminal equipment in the evolved Public Land Mobile Network (PLMN) network, etc.

In the embodiment of this application, the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites). superior).

In the embodiment of this application, the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, or an augmented reality (Augmented Reality, AR) terminal. Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self-driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home, etc.

As an example and not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices. It is a general term for applying wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes, etc. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not just hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly defined wearable smart devices include full-featured, large-sized devices that can achieve complete or partial functions without relying on smartphones, such as smart watches or smart glasses, and those that only focus on a certain type of application function and need to cooperate with other devices such as smartphones. Use, such as various types of smart bracelets, smart jewelry, etc. for physical sign monitoring.

In the embodiment of this application, the network device may be a device used to communicate with mobile devices. The network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA. , or it can be a base station (NodeB, NB) in WCDMA, or an evolutionary base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network network equipment (gNB) or network equipment in the future evolved PLMN network or network equipment in the NTN network, etc.

As an example and not a limitation, in the embodiment of the present application, the network device may have mobile characteristics, for example, the network device may be a mobile device. Optionally, the network device can be a satellite or balloon station. For example, the satellite can be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geosynchronous orbit (geostationary earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite ) satellite, etc. Optionally, the network device may also be a base station installed on land, water, etc.

In this embodiment of the present application, network equipment can provide services for a cell, and terminal equipment communicates with the network equipment through transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell. The cell can be a network equipment ( For example, the cell corresponding to the base station), the cell can belong to the macro base station, or it can belong to the base station corresponding to the small cell (Small cell). The small cell here can include: urban cell (Metro cell), micro cell (Micro cell), pico cell ( Pico cell), femto cell (Femto cell), etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-rate data transmission services.

Figure 1 illustrates a communication system 100. The communication system 100 includes a network device 110 and two terminal devices 120. Optionally, the communication system 100 may include multiple network devices 110, and the coverage of each network device 110 may include other numbers of terminal devices 120, which is not limited in this embodiment of the present application.

Optionally, the communication system 100 may also include other network entities such as a Mobility Management Entity (MME), an Access and Mobility Management Function (AMF), etc. The embodiments of this application are Not limited.

Among them, network equipment may include access network equipment and core network equipment. That is, the wireless communication system also includes multiple core networks used to communicate with access network equipment. The access network equipment can be a long-term evolution (long-term evolution, LTE) system, a next-generation (mobile communication system) (next radio, NR) system or authorized auxiliary access long-term evolution (LAA- Evolutionary base station (evolutional node B, abbreviated as eNB or e-NodeB) macro base station, micro base station (also known as "small base station"), pico base station, access point (access point, AP), Transmission point (TP) or new generation base station (new generation Node B, gNodeB), etc.

It should be understood that in the embodiments of this application, devices with communication functions in the network/system may be called communication devices. Taking the communication system shown in Figure 1 as an example, the communication equipment may include network equipment and terminal equipment with communication functions. The network equipment and terminal equipment may be specific equipment in the embodiments of the present application, which will not be described again here; the communication equipment also It may include other devices in the communication system, such as network controllers, mobility management entities and other network entities, which are not limited in the embodiments of this application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is just an association relationship that describes related objects, indicating that three relationships can exist. For example, A and/or B can mean: A exists alone, A and B exist simultaneously, and they exist alone. B these three situations. In addition, the character "/" in this article generally indicates that the related objects are an "or" relationship.

It should be understood that the "instruction" mentioned in the embodiments of this application may be a direct instruction, an indirect instruction, or an association relationship. For example, A indicates B, which can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B. relation.

In the description of the embodiments of this application, the term "correspondence" can mean that there is a direct correspondence or indirect correspondence between the two, it can also mean that there is an associated relationship between the two, or it can mean indicating and being instructed, configuration and being. Configuration and other relationships.

Figure 2 is a schematic flow chart of a multi-beam receiving method 200 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following:

S210. The first device determines N beams from K beams to receive the PSFCH; N and K are positive integers, and N is less than or equal to K; the K beams are at least two beams used by the second device to send the PSFCH, and at least two The two devices are different devices.

In some examples, the first device may determine to receive the N beams PSFCH according to the first condition. Wherein, the first condition is used to determine the PSFCHs of the N beams among the PSFCHs of the K beams; the PSFCHs of the K beams are PSFCHs sent by at least two second devices (the two second devices may be different devices). , K is an integer greater than or equal to 2, and N is an integer greater than or equal to 1.

S220. The first device receives PSFCH of N beams on the first time slot.

There is no necessary sequence relationship between steps S210-S220. Some of the steps can be selected and executed as needed, and the above steps do not need to be executed in sequence.

Using the embodiment of the present application, the first device can determine to receive N beam physical sidelink feedback channels PSFCH on the first time slot. In other words, for the multi-beam PSFCH that collides in one time slot, it can determine according to the first condition. Which beam is used to receive the PSFCH in a time slot, K is the total number of multi-beams, then the first device can determine N beams among the K beams as the beams to be received, so that N out of the K beams of the PSFCH are received The PSFCH of the beam avoids the transmission conflict of multi-beam PSFCH on one time slot and can realize multi-beam transmission on one time slot.

Figure 3 is a schematic flowchart of a multi-beam receiving method 300 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following:

S310. The first device determines N beams as beams to be received based on the first condition, where N is an integer greater than or equal to 1.

In some examples, the first condition is used to determine the PSFCHs of N beams to be received among the PSFCHs of K beams; the PSFCHs of K beams are configured by at least two second devices (the two second devices may be different devices) For the sent PSFCH, K is greater than or equal to 2.

S320. The first device receives the PSFCH of N beams on the first time slot.

In some examples, the PSFCHs of the N beams include: one or more PSFCHs.

In some examples, the first device may be a terminal device (denoted as UE1), K is the total number of multi-beams, and N is the number of beams to be received. N of the PSFCHs of the K beams to be received may be determined according to the first condition. The PSFCH of the beam is received, so that the terminal equipment (denoted as UE1) can receive the PSFCH of N beams on the first time slot.

S330. The first device does not receive the PSFCH of K-N beams other than N among the K beams on the first time slot.

In some examples, the first device may be a terminal device (denoted as UE1), K is the total number of multi-beams, N is the beam to be received, and the remaining K-N beams are not received, and K can be determined according to the first condition. PSFCHs of N to-be-received beams among the PSFCHs of the beams, so that the PSFCHs of K-N beams other than N among the K beams are not received on the first time slot.

Using the embodiment of the present application, the first device can determine to receive the PSFCH of N beams on the first time slot according to the first condition (the first condition is used to determine the PSFCH of N to-be-received beams among the PSFCH of K beams). . Wherein, the PSFCHs of the K beams are PSFCHs sent by at least two second devices (the two second devices may be different devices), and K is greater than or equal to 2. In other words, for the multi-beam PSFCH that collides in one time slot, the first condition can be used to determine which beam to receive the PSFCH in one time slot, that is, to receive the PSFCH of N to-be-received beams among the PSFCHs of K beams, to avoid The transmission conflict of multi-beam PSFCH on one time slot is eliminated, and multi-beam transmission on one time slot can be realized.

There is no necessary sequence relationship between steps S310-S330. Some of the steps can be selected and executed as needed, and the above steps do not need to be executed in sequence.

In a possible implementation, the first condition includes at least one of the following (1)-(4):

(1) K beams PSFCH correspond to the priority of the data packet carried by PSCCH/PSSCH;

(2) K beams PSFCH correspond to the remaining number of retransmissions of the TB after the PSCCH/PSSCH transmission time;

(3) The packet delay budget of the data packet corresponding to the PSCCH/PSSCH transmission time of K beams PSFCH;

(4)Congestion conditions of the resource pool.

Figures 4 to 6 are schematic flow charts of the multi-beam receiving method 300 - the multi-beam receiving method 400 respectively according to an embodiment of the present application. When the first device receives the PSFCH of N beams on the first time slot, The PSFCHs of N beams among the K beams PSFCH can be determined according to the priorities of the K beams PSFCH, including at least one of the following solutions:

Solution 1 can optionally be applied to the system shown in Figure 1, but is not limited to this. As shown in Figure 4, the method includes at least part of the following:

S410. When N is equal to 1, the first device determines that the PSFCH with the highest priority among the K beam PSFCHs is the PSFCH of the N beams. Among them, the PSFCH with the highest priority is the PSFCH with the smallest priority value.

In some examples, the PSFCHs of the N beams include: one or more PSFCHs.

In some examples, the first device may be a terminal device (denoted as UE1), K is the total number of multi-beams, and N is the number of beams to be received. When N is equal to 1, the terminal device (denoted as UE1) may determine The PSFCH with the highest priority among the K beam PSFCHs is the PSFCH of the N beams.

In some examples, the smaller the priority value, the higher the corresponding priority. For example, the priority corresponding to priority value 1 is higher than the priority corresponding to priority value 2; PSCCH/PSSCH and the corresponding PSFCH can have the same priority.

Solution 2 can optionally be applied to the system shown in Figure 1, but is not limited to this. As shown in Figure 4, the method includes at least part of the following:

S510. When N is greater than 1 and different beams are used to receive K beam PSFCHs, the first device selects to receive the top N PSFCHs with the highest priority among the K beam PSFCHs according to the device hardware capabilities. Among them, the top N beams with the highest priority are the top N PSFCHs arranged in ascending order of priority values.

In some examples, the PSFCHs of the N beams include: one or more PSFCHs.

In some examples, the first device may be a terminal device (denoted as UE1), K is the total number of multi-beams, N is the number of beams to be received, and when N is greater than 1 and different beams are used to receive K beams PSFCH, The terminal equipment (denoted as UE1) can choose to receive the top N PSFCHs with the highest priority among the K beam PSFCHs according to the equipment hardware capabilities.

Solution 3 can optionally be applied to the system shown in Figure 1, but is not limited to this. As shown in Figure 4, the method includes at least part of the following:

S610. When the same beam is used to receive the K beam PSFCHs, the first device selects the first beam corresponding to the PSFCH with the highest priority among the K beams PSFCH as the priority of the current beam; the priority of the current beam is higher than Beams other than the first beam.

S620. The first device determines the PSFCH corresponding to the same first beam among the K beam PSFCHs as the PSFCH of N beams.

In some examples, the first device may be a terminal device (denoted as UE1), K is the total number of multi-beams, and N is the number of beams to be received. When the same beam is used to receive the K beams PSFCH, the terminal device ( Denoted as UE1), the first beam corresponding to the PSFCH with the highest priority among the K beams PSFCH can be selected as the priority of the current beam; the priority of the current beam is higher than other beams except the first beam. In short, for the same beam, the first beam corresponding to the PSFCH with the highest priority (lowest priority value) can be taken as the priority of the current beam.

There is no necessary sequence relationship between steps S610-S620. Some of the steps can be selected and executed as needed, and the above steps do not need to be executed in sequence.

Figure 7 is a schematic flow chart of a multi-beam receiving method 700 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following:

S710. The first device determines N beams as beams to be received based on the first condition, where N is an integer greater than or equal to 1.

S720. The first device receives PSFCH of N beams on the first time slot.

In some examples, the PSFCHs of the N beams include: one or more PSFCHs.

In some examples, the first device may be a terminal device (denoted as UE1), K is the total number of multi-beams, and N is the number of beams to be received. N of the PSFCHs of the K beams to be received may be determined according to the first condition. The PSFCH of the beam is received so that the terminal device (denoted as UE1) can receive the PSFCH of N beams on the first time slot.

S730. The first device does not receive PSFCHs of K-N beams other than N on the first time slot, and uses negative acknowledgment (Negative Acknowledgment, NACK) or positive acknowledgment (Acknowledgement, ACK) for the PSFCH of K-N beams.

In some examples, the first device may be a terminal device (denoted as UE1), K is the total number of multi-beams, N is the beam to be received, and the remaining K-N beams are not received, and K can be determined according to the first condition. PSFCHs of N beams to be received among the PSFCHs of the beams. Therefore, the PSFCHs of K-N beams other than N among the K beams are not received on the first time slot, and NACK or ACK processing is adopted for the PSFCHs of the K-N beams.

There is no necessary sequence relationship between steps S710-S730. Some of the steps can be selected and executed as needed, and the above steps do not need to be executed sequentially.

In a possible implementation, the first device does not receive PSFCH of K-N beams on the first time slot, including at least one of the following situations (1)-(2):

(1) The first device treats the PSFCH that is not received as NACK, that is, NACK is a kind of negative feedback, and the receiver only notifies the sender when it does not receive data.

In some examples, when the first device treats a PSFCH that is not received as a NACK, the transport block (Transport Block, TB) corresponding to the PSFCH that is not received may be retransmitted or not retransmitted.

(2) The first device treats the PSFCH that is not received as ACK, that is, ACK is a kind of positive feedback. After receiving the data, the receiver replies with a message to inform the sender.

In some examples, when the first device processes the PSFCH that is not received as an ACK, the TB corresponding to the PSFCH that is not received may be retransmitted or not retransmitted.

Figure 8 is a schematic flowchart of a multi-beam transmission method 800 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following:

S810. The first device determines M beams from J beams to transmit PSCCH/PSSCH; M and J are positive integers, and M is less than or equal to J.

In some examples, the first device may determine to send PSCCH/PSSCH on M beams according to the second condition. Wherein, the second condition is used to determine M beams among the beams to be transmitted of J beams PSCCH/PSSCH; M is an integer greater than or equal to 1, J is greater than or equal to 2, and J is greater than or equal to M.

S820. The first device sends PSCCH/PSSCH on M beams and PSCCH/PSSCH on M beams to obtain PSFCH in response to the PSCCH/PSSCH.

There is no necessary sequence relationship between steps S810-S820. Some of the steps can be selected and executed as needed, and the above steps do not need to be executed in sequence.

Using the embodiment of the present application, the "PSCCH/PSSCH transmission processing" performed by the first device is compared with the "PSFCH reception processing" in the above embodiment. The two can cooperate with each other. Correspondingly, the "PSCCH/PSSCH transmission processing" "Processing" is optimized, and the first device can determine to send PSCCH/PSSCH on M beams, and the sending process of PSCCH/PSSCH is used to obtain the PSFCH responding to the PSCCH/PSSCH. In other words, for the multi-beam PSFCH that collides in one time slot, the first device can determine which beam to receive the PSFCH in one time slot. K is the total number of multi-beams, then N beams among the K beams are As the beam to be received, the PSFCH of N to be received beams among the PSFCH of K beams can be received, avoiding the transmission conflict of multi-beam PSFCH on one time slot. Correspondingly, the "PSCCH/PSSCH transmission processing" is optimized. , it can be determined whether the PSCCH/PSSCH corresponding to the conflicting multi-beam PSFCH in one time slot needs to be sent, discarded, or resource selected/reselected, etc., and also avoids the transmission conflict of multi-beam PSFCH in one time slot, so that it can Implement multi-beam transmission on one time slot.

Figure 9 is a schematic flow chart of a multi-beam transmission method 900 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following:

S910. The first device determines that the PSFCHs of M beams among the PSFCHs of J beams are beams to be received according to the second condition.

S920. The first device determines M beams as beams to be sent based on the M beams to be received, where M is an integer greater than or equal to 1.

In some examples, the first device may be a terminal device (denoted as UE1), J is the total number of multi-beams, and M is the number of beams to be sent and received. The terminal device (denoted as UE1) may first determine J according to the second condition. The PSFCHs of M beams among the PSFCHs of the beams are the beams to be received. Correspondingly, the M beams are determined as the beams to be transmitted based on the M beams to be received, so that the PSCCH/PSSCH is transmitted on the M beams.

S930. The first device sends PSCCH/PSSCH on M beams; the M to-be-received beams used to receive PSFCH and the M to-be-sent beams used to send PSCCH/PSSCH are the same beam pair.

S940. The first device does not send the PSCCH/PSSCH of J-M beams other than M among the J beams.

In some examples, the first device may be a terminal device (denoted as UE1), J is the total number of multi-beams, M is the number of beams to be sent and received, and the remaining J-M beams are not sent, and the terminal device (denoted as UE1) UE1) can first determine the PSFCHs of M beams among the PSFCHs of J beams as beams to be received according to the second condition, and accordingly, determine the M beams as beams to be transmitted based on the M beams to be received, so that in the M beams The PSCCH/PSSCH is transmitted on the beam, so that the PSCCH/PSSCH of J-M beams other than M among the J beams are not transmitted.

Using the embodiment of the present application, the "PSCCH/PSSCH transmission processing" performed by the first device is compared with the "PSFCH reception processing" in the above embodiment. The two can cooperate with each other. Correspondingly, the "PSCCH/PSSCH transmission processing" "Processing" is optimized, and the first device can determine the transmission processing for J (J is greater than or equal to 2, and is greater than or equal to M) beams PSCCH/PSSCH according to the second condition. The transmission processing of J beams PSCCH/PSSCH is used to obtain the PSFCH responding to the PSCCH/PSSCH. M beams among the beams to be transmitted of the J beams PSCCH/PSSCH can be determined through the second condition. In other words, for the multi-beam PSFCH that collides in a time slot, the first device can determine according to which beam to receive the PSFCH in a time slot according to the first condition. K is the total number of multi-beams, then the K beams are The N beams in the PSFCH are used as the beams to be received. Therefore, the PSFCH of the N beams to be received in the PSFCH of the K beams can be received, avoiding the transmission conflict of multi-beam PSFCH on one time slot. Correspondingly, the "PSCCH/PSSCH" "Transmission processing" is optimized, and the first device can determine according to the second condition whether the PSCCH/PSSCH corresponding to the multi-beam PSFCH that collides in a time slot needs to be sent, discarded, or resource selected/resource reselected, etc., and also avoids The transmission of multi-beam PSFCH on one time slot collides, so that multi-beam transmission on one time slot can be realized.

There is no necessary sequential relationship between steps S910-S940. Some of the steps can be selected and executed as needed, and the above steps do not need to be executed in sequence.

In a possible implementation, the second condition includes at least one of the following (1)-(4):

(1) J beams PSFCH correspond to the priority of the PSCCH/PSSCH carrying data packets;

(2) J beams PSFCH correspond to the remaining number of retransmissions of the TB after the PSCCH/PSSCH transmission time;

(3) The packet delay budget of the data packet corresponding to the PSCCH/PSSCH transmission time of J beams PSFCH;

(4)Congestion conditions of the resource pool.

Figures 10 and 11 are schematic flow charts of a multi-beam transmission method 1000 - a multi-beam transmission method 1100 respectively according to an embodiment of the present application. When the first device transmits PSCCH/PSSCH of M beams, according to J beams The priority of PSCCH/PSSCH is used to determine the PSCCH/PSSCH of M beams, including at least one of the following solutions:

Solution 1 can optionally be applied to the system shown in Figure 1, but is not limited to this. As shown in Figure 10, the method includes at least part of the following:

S1010, when M is equal to 1, the first device sends the PSCCH/PSSCH with the highest priority among the J beams of PSCCH/PSSCH; the PSCCH/PSSCH with the highest priority is the PSCCH/PSSCH with the smallest priority value.

Solution 1 can optionally be applied to the system shown in Figure 1, but is not limited to this. As shown in Figure 11, the method includes at least part of the following:

S1110. When M is greater than 1, the first device sends the first M PSCCH/PSSCHs with the highest priority among the J beams PSCCH/PSSCH; the first M PSCCH/PSSCH with the highest priority are arranged in ascending order of priority values. The first M PSCCH/PSSCH.

Figure 12 is a schematic flowchart of a multi-beam transmission method 1200 according to an embodiment of the present application. This method can optionally be applied to the system shown in Figure 1, but is not limited thereto. The method includes at least some of the following:

S1210. The first device determines that the PSFCHs of M beams among the PSFCHs of J beams are beams to be received according to the second condition.

S1220. The first device determines M beams as beams to be sent based on the M beams to be received, where M is an integer greater than or equal to 1.

S1230. The first device sends PSCCH/PSSCH on M beams; the M to-be-received beams used to receive PSFCH and the M to-be-sent beams used to send PSCCH/PSSCH are the same beam pair.

S1240. The first device adopts at least one method including discard processing, resource reselection, and conflict avoidance processing, and does not transmit the PSCCH/PSSCH of J-M beams other than M among the J beams.

In some examples, for the discarding process, the first device may perform discarding process on the PSCCH/PSSCH that is not sent.

In some examples, for resource reselection, the first device may perform resource reselection on the PSCCH/PSSCH that is not to be sent, and send it on resources corresponding to the multi-beam PSFCH.

In some examples, for conflict avoidance processing, the first device may perform conflict avoidance processing on the PSCCH/PSSCH that is not sent, and delete the resources corresponding to the multi-beam PSFCH from the candidate resource set.

There is no necessary sequential relationship between steps S1210-S1240. Some of the steps can be selected and executed as needed, and the above steps do not need to be executed in sequence.

In a possible implementation, it also includes: when the first device performs resource selection or resource reselection for PSCCH/PSSCH, obtain a beam pair according to the corresponding relationship between PSCCH/PSSCH and PSFCH; the beam pair belonging to the same beam pair And the PSCCH/PSSCH corresponding to the PSFCH is transmitted intensively using the same beam. In other words, for situations where resource selection or resource reselection is required, the selected PSCCH/PSSCH transmission resources can ensure that the first device can receive multiple PSFCHs according to the same beam in the same time slot.

The multi-beam receiving method and multi-beam transmitting method provided by the above embodiments of the present application will be described in detail below. The following application scenarios and related technical solutions are optional solutions and can be arbitrarily combined with various examples of the embodiments of the present application. All belong to the protection scope of the embodiments of this application.

In side-link communication, according to the network coverage of the communicating terminal equipment, it is divided into network-covered inner-line communication, partial network-covered side-line communication, and network-covered outer-line communication, as shown in Figure 13, Figure 14, and Figure respectively. As shown in 15, side-link communication in different network coverage environments is achieved.

Figure 13 is a schematic diagram of a side-link communication scenario within the network coverage according to an embodiment of the present application. As shown in Figure 13, in the side-link communication within the network coverage, all terminal devices performing side-link communication are within the coverage of the same base station. , thus, the above-mentioned terminal devices can all perform side-link communication based on the same side-link configuration by receiving configuration signaling from the base station.

Figure 14 is a schematic diagram of a side-link communication scenario with partial network coverage according to an embodiment of the present application. As shown in Figure 14, in the case of side-link communication with partial network coverage, some terminal devices performing side-link communication are located within the coverage of the base station. , this part of the terminal equipment can receive the configuration signaling of the base station, and perform sideline communication according to the configuration of the base station. The terminal equipment located outside the network coverage cannot receive the configuration signaling of the base station. In this case, the terminal equipment outside the network coverage will use the pre-configuration information and the terminal equipment located within the network coverage. The information carried in the sent sidelink broadcast channel PSBCH determines the sidelink configuration and performs sidelink communication.

Figure 15 is a schematic diagram of a network coverage outside line communication scenario according to an embodiment of the present application. As shown in Figure 15, for network coverage outside line communication, all terminal devices performing side line communication are located outside the network coverage. All terminal devices The side-link configuration is determined based on the pre-configuration information for side-link communication.

Figure 16 is a schematic diagram of a side communication scenario with a central control node according to an embodiment of the present application. As shown in Figure 16, for side communication with a central control node, multiple terminal devices form a communication group. Within the communication group It has a central control node and can also become a cluster head terminal device (Cluster Header, CH). The central control node has one of the following functions: responsible for the establishment of a communication group; joining and leaving group members; coordinating resources and providing services for other terminal devices Allocate side-link transmission resources, receive side-link feedback information from other terminal devices, and coordinate resources with other communication groups.

Device to Device communication (Device to Device, D2D) or Vehicle to Vehicle (Vehicle to Vehicle, V2X) technology is a sidelink (SL) transmission technology based on D2D, which communicates with traditional cellular systems through communication data. The base station receives or transmits in different ways, with higher spectrum efficiency and lower transmission delay. D2D/V2X is usually used in Internet of Vehicles systems. In the Internet of Vehicles system, D2D/V2X is used to enable direct communication from terminal device to terminal device. 3GPP defines the following two transmission modes: first mode and second mode.

For the first mode, the transmission resources of the terminal equipment are allocated by the network equipment (such as the base station), and the terminal equipment transmits data on the sidelink according to the resources allocated by the base station; the base station can allocate a single transmission to the terminal equipment. resources, and semi-static transmission resources can also be allocated to terminal devices. As shown in Figure 13, the terminal device is located within the network coverage, and the network allocates transmission resources for sidelink transmission to the terminal device.

For the second mode, the terminal device selects a resource in the resource pool for data transmission. As shown in Figure 15, the terminal device is located outside the cell coverage, and the terminal device autonomously selects transmission resources from the preconfigured resource pool for sidelink transmission; or as shown in Figure 13, the terminal device autonomously selects the resource pool from the network configuration. Transmission resources for sideline transmission.

With the arrival of 5G, 3GPP has also proposed more advanced application scenarios for V2X. In the NR-V2X technology based on the 5G standard, the application in the Internet of Vehicles also needs to support autonomous driving, so it has proposed more advanced data interaction between vehicles. High requirements, such as higher throughput, lower latency, higher reliability, larger coverage, more flexible resource allocation, etc.

LTE-V2X based on the 4G standard supports broadcast transmission methods, while in NR-V2X, unicast and multicast transmission methods are introduced.

Figure 17 is a schematic diagram of a unicast scenario according to an embodiment of the present application. As shown in Figure 17, for unicast transmission, there is only one terminal device at the receiving end, and unicast transmission is performed between UE1 and UE2.

Figure 18 is a schematic diagram of a multicast scenario according to an embodiment of the present application. As shown in Figure 18, for multicast transmission, the receiving end is all terminal devices in a communication group, or all terminal devices within a certain transmission distance. , UE1, UE2, UE3 and UE4 form a communication group, where UE1 is the sending device and is used to send data, and other terminal devices in the group are receiving devices.

Figure 19 is a schematic diagram of a broadcast scene according to an embodiment of the present application. As shown in Figure 19, for the broadcast transmission method, the receiving end is any terminal device around the sending end terminal device. UE1 is the sending end device, and other surrounding devices Terminal devices such as UE2-UE6 are all receiving end devices.

The system frame structure of NR-V2X is shown in Figure 20(a)-Figure 20(b). Among them, Figure 20(a) is a schematic structural diagram of a time slot in which the PSFCH channel is not included in the time slot according to an embodiment of the present application, and Figure 20(b) is a time slot in which the PSFCH channel is included in the time slot according to an embodiment of the present application. Schematic.

In NR-V2X, the PSCCH starts from the second sidelink symbol of the time slot in the time domain and occupies 2 or 3 Orthogonal Frequency Division Multiplexing (OFDM) symbols. It can occupy 2 or 3 Orthogonal Frequency Division Multiplexing (OFDM) symbols in the frequency domain. {10,12 15,20,25} physical resource blocks (Physical RB, PRB). In order to reduce the complexity of the UE's blind detection of PSCCH, only one number of PSCCH symbols and one number of PRBs are allowed to be configured in a resource pool. In addition, because sub-channels are the minimum granularity for PSSCH resource allocation in NR-V2X, the number of PRBs occupied by PSCCH must be less than or equal to the number of PRBs contained in a sub-channel in the resource pool to avoid additional restrictions on PSSCH resource selection or allocation. . PSSCH also starts from the second sidelink symbol of the time slot in the time domain. The last time domain symbol in the time slot is the guard period (Guard period, GP) symbol, and the remaining symbols are mapped to the PSSCH. The first siderow symbol in this time slot is a repetition of the second siderow symbol. Usually the receiving end device uses the first siderow symbol as an automatic gain control (Automatic Gain Control, AGC) symbol. The data is generally not used for data demodulation. PSSCH occupies K sub-channels in the frequency domain, and each sub-channel includes N consecutive PRBs, as shown in Figure 20(a).

When the time slot contains the PSFCH channel, the second to last and third to last symbols in the time slot are used for PSFCH channel transmission, and a time domain symbol before the PSFCH channel is used as the GP symbol, as shown in Figure 20(b) .

In order to better support unicast communication, NR-V2X supports Sidelink (SL) Channel State Information-Reference Signal (CSI-RS). SL CSI-RS is used for 5G. For downlink channel detection, SL CSI-RS will only be sent when the following three conditions are met:

(1) The UE sends the corresponding PSSCH, that is to say, the UE cannot only send SL CSI-RS;

(2) High-level signaling activates sidelink channel state information (Channel State information, CSI) reporting;

(3) When high-level signaling activates sidelink CSI reporting, the corresponding bits in the second-order sidelink control information (Sidelink Control Information, SCI) sent by the UE trigger sidelink CSI reporting.

The maximum number of ports supported by SL CSI-RS is 2. When there are two ports, the SL CSI-RS of different ports are multiplexed through code division on two adjacent REs of the same OFDM symbol. Each port in a PRB The number of SLCSI-RS is 1, that is, the density is 1. Therefore, SL CSI-RS will only appear on one OFDM symbol at most in a PRB. The specific position of this OFDM symbol is determined by the sending terminal equipment. In order to avoid affecting the resource mapping of PSCCH and second-order SCI, SL CSI-RS RS cannot be located in the same OFDM symbol as PSCCH and second-order SCI. Since the channel estimation accuracy of the OFDM symbol where the PSSCH DMRS is located is high, and the SL CSI-RS of the two ports will occupy two consecutive resource elements (Resource Elements, RE) in the frequency domain, the SL-CSI-RS cannot be combined with The DMRS of PSSCH is sent on the same OFDM symbol. The position of the OFDM symbol where the SL CSI-RS is located is indicated by the sl-CSI-RS-FirstSymbol parameter in PC5RRC.

The position of the first RE occupied by SL CSI-RS in a PRB is indicated by the sl-CSI-RS-FreqAllocation parameter in PC5RRC. If SL CSI-RS is a port, this parameter is a bitmap with a length of 12, Corresponding to 12 REs in a PRB, if SL CSI-RS is two ports, this parameter is a bitmap with a length of 6. In this case, SL CSI-RS occupies 2f(1) and 2f(1)+ 1 two REs, where 2f(1) represents the index of the bit with a value of 1 in the above bitmap. The frequency domain position of SL CSI-RS is also determined by the transmitter device, but the determined frequency domain position of SL CSI-RS cannot conflict with PT-RS.

Figure 21 is a schematic diagram of the time-frequency position of SL CSI-RS according to an embodiment of the present application. As shown in Figure 21, the number of SL CSI-RS ports is 2, sl-CSI-RS-FirstSymbol is 8, sl-CSI-RS- FreqAllocation is [b ₅ , b ₄ , b ₃ , b ₂ , b ₁ , b ₀ ]=[0,0,0,1,0,0].

The design goals of the NR/5G system include large-bandwidth communications in high frequency bands (such as frequency bands above 6GHz). When the operating frequency becomes higher, the path loss during transmission will increase, thus affecting the coverage capability of the high-frequency system. In order to effectively ensure the coverage of high-frequency NR systems, an effective technical solution is based on massive antenna arrays (Massive MIMO) to form shaped beams with greater gain, overcome propagation losses, and ensure system coverage.

Considering the millimeter wave antenna array, due to the shorter wavelength, smaller antenna element spacing and smaller aperture, more physical antenna elements can be integrated into a two-dimensional antenna array of limited size. At the same time, due to the limited size of the millimeter wave antenna array , considering factors such as hardware complexity, cost overhead, and power consumption, digital beamforming cannot be used. Instead, analog beamforming is usually used, which can not only enhance network coverage, but also reduce the implementation complexity of the equipment.

In a typical 2G/3G/4G system, a cell (sector) uses a wider beam (beam) to cover the entire cell. Therefore, at every moment, UEs within the cell coverage have the opportunity to obtain transmission resources allocated by the system, as shown in Figure 22(a).

In the NR/5G system, multi-beam system is used to achieve multi-beam reception/transmission. The multi-beam system can cover the entire cell through different wave beams, that is, each beam covers a smaller area. Range, through time scanning (sweeping), the effect of multi-beam coverage of the entire cell is achieved, as shown in Figure 22(b).

Specifically, the schematic diagrams of the system without beamforming and using beamforming are shown in Figure 22(a)-Figure 22(b). Among them, Figure 22(a) is a schematic diagram of an LTE/NR system that does not use analog wave speed according to an embodiment of the present application. As shown in Figure 22(a), the LTE/NR network side uses a wide beam to cover the entire cell. Users 1-5 can receive network signals at any time. Figure 22(b) is a schematic diagram of an NR system using simulated wave speed according to an embodiment of the present application. As shown in Figure 22(b), the network side uses narrower beams (such as beams 1-4 in the figure). Use different beams to cover different areas in the cell at different times. For example, at time 1, the NR network side covers the area where user 1 is located through beam 1; at time 2, the NR network side covers the area where user 2 is located through beam 2; at time 1 3. The NR network side covers the area where user 3 and user 4 are located through beam 3; at time 4, the NR network side covers the area where user 5 is located through beam 4. Because the network uses narrower beams, the transmission energy can be more concentrated, so it can cover longer distances; at the same time, because the beams are narrower, each beam can only cover part of the area in the cell. Therefore, analog beamforming is "time-based" Change space."

Analog beamforming can be used not only for network-side equipment, but also for terminal equipment. At the same time, analog beamforming can be used not only for signal transmission (called a transmit beam), but also for signal reception (called a receive beam).

Different beams can be identified by the different signals they carry:

(1) Different synchronization signal blocks (Synchronization Signal Block, SSB) are transmitted on some different beams, and the UE can distinguish different beams through different SSBs; among them, the synchronization signal (Synchronization Signal, SS) of NR includes: main SS (Primary Synchronization Signal, PSS) and secondary SS (Secondary Synchronization Signal, SSS).

(2) Different CSI-RS signals are transmitted on some different beams, and the UE identifies different beams through CSI-RS signals/CSI-RS resources.

It should be pointed out that the following examples of this application can be implemented based on visible signals (which actually correspond to certain/certain physical beams). In a multi-beam system, PDCCH and PDSCH can be transmitted through different downlink transmission beams. transmission.

(1) For systems below 6G, there are generally no analog beams on the terminal equipment side, so omnidirectional antennas (or nearly omnidirectional antennas) are used to receive signals sent by different downlink transmit beams of the base station.

(2) For millimeter wave systems, there may be analog beams on the terminal equipment side, and the corresponding downlink receiving beams need to be used to receive the signals sent by the corresponding downlink transmitting beams. At this time, corresponding beam indication information (beam indication) is needed to assist the terminal device in determining the transmit beam-related information on the network side, or the corresponding receive beam-related information on the UE side.

In the NR protocol, the beam indication information does not directly indicate the beam itself, but indicates it through the quasi co-location (Quasi Co-Location, QCL) between signals ('QCL-TypeD' type). On the terminal equipment side, determining to receive the corresponding channel/signal is also based on QCL quasi-colocation/assumption.

Regarding the QCL quasi-colocation indication/assumption for downlink transmission, in order to improve the reception performance when the terminal device receives signals, the characteristics of the transmission environment corresponding to the data transmission can be used to improve the reception algorithm. For example, the statistical properties of the channel can be exploited to optimize the design and parameters of the channel estimator. In the NR system, these characteristics corresponding to data transmission are represented by QCL status (QCL-Info).

If the downlink transmission comes from different Total Radiated Power (TRP)/panel/beam, the characteristics of the transmission environment corresponding to the data transmission may also change. Therefore, in the NR system, the network side transmits the downlink control channel Or data channel, the corresponding QCL status information will be indicated to the terminal device through the Transmission Configuration Indication (TCI) status. The TCI status is used to dynamically indicate the QCL spatial relationship between the reference signal in a reference signal set and the demodulation reference signal of the physical downlink shared channel and the port.

A TCI state can contain the following configuration:

(1)TCI status ID, used to identify a TCI status;

(2)QCL information 1;

(3) QCL information 2 (optional);

Among them, a QCL information includes the following information:

(1) QCL type configuration, which can be one of QCL type A, QCL typeB, QCL typeC or QCL typeD;

(2) QCL reference signal configuration, including the cell ID where the reference signal is located, the BWP ID and the identification of the reference signal (which can be the CSI-RS resource ID or SSB index);

Among them, if both QCL information 1 and QCL information 2 are configured, the QCL type of at least one QCL information must be one of typeA, typeB, and typeC, and the QCL type of the other QCL information (if configured) must be QCL type D.

Among them, the definitions of different QCL type configurations are as follows:

(1)'QCL-TypeA':{Doppler shift,Doppler spread,average delay,delay spread};

(2)'QCL-TypeB':{Doppler shift,Doppler spread};

(3)'QCL-TypeC':{Doppler shift,average delay};

(4)'QCL-TypeD':{Spatial Rx parameter}.

The relevant configurations in existing 38.331 are as follows:

In the NR system, the network side can indicate the corresponding TCI status for the downlink signal or downlink channel. Figure 23 is a schematic diagram of the TCI state configuration method of PDSCH according to an embodiment of the present application. As shown in Figure 23, if the network side configures the target downlink channel or the QCL reference signal of the target downlink signal through the TCI state to be the reference SSB or the reference CSI- RS resource, and the QCL type is configured as typeA, typeB or typeC, then the terminal device can assume that the large-scale parameters of the target downlink signal and the reference SSB or reference CSI-RS resource are the same, and the large-scale parameters are passed through QCL Determine the type configuration.

Similarly, if the network side configures the QCL reference signal of the target downlink channel or downlink signal as a reference SSB or a reference CSI-RS resource through the TCI state, and the QCL type is configured as typeD, the terminal device can adopt and receive the reference SSB or reference The receiving beam with the same CSI-RS resource (i.e. Spatial Rx parameter) is used to receive the target downlink signal. Generally, the target downlink channel (or downlink signal) and its reference SSB or reference CSI-RS resource are sent by the same TRP or the same panel or the same beam on the network side. If the transmission TRP or transmission panel or transmission beam of two downlink signals or downlink channels are different, different TCI states are usually configured.

For the downlink control channel, the TCI status corresponding to CORESET can be indicated through RRC signaling or RRC signaling + MAC signaling. It should be pointed out that considering that the NR system has changed the scheduling of downlink control information (DCI), that is, it no longer uses a dedicated channel to indicate how many OFDM symbols the PDCCH occupies, but instead uses a so-called CORESET channel to indicate the time-frequency resources occupied by the PDCCH.

For the downlink data channel, the set of available TCI states is indicated through RRC signaling, and some of the TCI states are activated through MAC layer signaling. Finally, one or two TCI states are indicated from the activated TCI states through the TCI state indication field in the DCI. TCI status, used for DCI scheduled PDSCH. The situation of 2 TCI status is mainly for the multiple TRP similar scenarios discussed in the following examples.

Figure 24 is a schematic diagram of multi-beam transmission/reception according to an embodiment of the present application. As shown in Figure 24, UE1 uses beam 1 to send PSCCH/PSSCH (TB1) to UE2. Correspondingly, UE2 sends feedback information PSFCH to UE1. UE1 Transmit and receive between UE2 and UE2 using matched beam pair 1. Similarly, UE1 uses beam 2 to send PSCCH/PSSCH (TB2) to UE3. Correspondingly, UE3 sends feedback information PSFCH to UE1. The matching beam pair 2 is used for transmission and reception between UE1 and UE3. Similarly, UE1 uses beam 3 to send PSCCH/PSSCH (TB3) to UE4. Correspondingly, UE4 sends feedback information PSFCH to UE1. The matching beam pair 3 is used for transmission and reception between UE1 and UE4.

Figure 25 is a timing relationship diagram of PSCCH/PSSCH transmission and corresponding PSFCH feedback in multi-beam transmission/reception according to an embodiment of the present application. As shown in Figure 25, PSCCH/PSSCH transmission and correspondence are given through time domain resource allocation. Timing relationship of PSFCH feedback.

Combining Figures 24 and 25, the following technical problems are found:

UE1, as the sending end device, can send PSCCH/PSSCH, and UE2/3/4, as the receiving end device, can receive the PSCCH/PSSCH sent by UE1. After UE1 uses different beams to send PSCCH/PSSCH to UE2, UE3, and UE4 in time slot 1, time slot 2, and time slot 3, UE2, UE3, and UE4 use corresponding beams to feedback PSFCH on the corresponding PSFCH of time slot 5. And the beams used by UE2, UE3 and UE4 are different. When UE1 receives the PSFCH on time slot 5, it can only use one beam for reception. It cannot use three different beams at the same time to receive all the PSFCHs sent by UE2, UE3 and UE4. Therefore, the reception of some PSFCHs will fail. In other words, multi-beam transmission on one time slot cannot be achieved.

In view of this, using the following examples of the embodiments of this application, the first device for multi-beam reception/transmission is a terminal device (denoted as UE1), which can realize the reception function of different beams PSFCH for multi-beams in one time slot. , Correspondingly, the sending function of PSFCHPSCCH/PSSCH corresponding to the PSFCH can also be realized.

Considering that UE1 needs to receive multiple PSFCHs in one time slot (such as time slot K), multiple PSFCHs can be sent by other UEs (at least two UEs, such as UE2, UE3, UE4, UE5) using different beams, UE1 according to the following Conditions to determine the behavior of sending PSCCH/PSSCH, and/or determine the behavior of receiving the corresponding PSFCH.

Regarding the reception behavior of PSFCH, UE1 can determine and select K (K is greater than or equal to 2) beams in a time slot (such as time slot K) according to the following conditions (referred to as the first condition in the above application embodiment). The N beams in are the beams to be received. The PSFCH is received through these N beams, and the PSFCH sent by K-N beams other than N among the K beams is not received. N can be an integer equal to 1 or greater than 1.

Regarding the sending behavior of the PSCCH/PSSCH corresponding to the PSFCH, UE1 can determine and select J (J is greater than Equal to 2, and J is greater than or equal to M) M beams in the beam transmit PSCCH/PSSCH, and will also receive PSFCH corresponding to the same beam in time slot K, that is: M to be received beams used to receive PSFCH and used to transmit The M beams to be transmitted on the PSCCH/PSSCH are the same beam pairs. UE1 may not send the PSCCH/PSSCH of J-M beams other than M among the J beams, nor may it receive the PSFCH corresponding to these beams on time slot K. M may be an integer equal to 1 or greater than 1.

Since the receiving behavior of PSFCH and the sending behavior of PSCCH/PSSCH in the above application embodiment can match, the configuration rules of the first condition and the second condition in the above application embodiment can be the same, and both comply with the following conditions At least one of:

(1) According to the service priority corresponding to the data packet carried by PSCCH/PSSCH corresponding to PSFCH, it can be used as the first condition;

(2) According to the remaining number of retransmissions of the TB after the PSCCH/PSSCH corresponding to the PSFCH;

(3) The packet delay budget (Packet Delay Budget, PDB) corresponding to the data packet corresponding to the PSCCH/PSSCH transmission time of PSFCH;

(4) According to the congestion conditions of the resource pool such as Channel Busy Ratio (CBR), Channel Occupancy Ratio (CR), etc.

Each example using the above embodiments of the present application is described as follows:

Example 1:

As shown in Figure 26, the received PSFCH can be determined according to the priority. UE1 uses different beams to send PSCCH/PSSCH to UE2, UE3, and UE4 in time slot 1, time slot 2, and time slot 3 respectively. UE2, UE3 and UE4 use corresponding different beams to feed back PSFCH to UE1 in time slot 5.

The PSSCH services corresponding to PSFCH 1, PSFCH 2, and PSFCH 3 have different service priorities. The priority values are: PSFCH 1=3, PSFCH 2=1, PSFCH 3=2. Since the smaller the priority value, the corresponding priority The higher the priority, therefore, PSFCH 2 has a higher priority than PSFCH 3, and PSFCH 3 has a higher priority than PSFCH 1.

According to the different priorities of the three PSFCHs, UE1 selects PSFCH 2 with the highest priority (the smallest priority value) for reception, that is, it uses the beam corresponding to PSFCH2 for reception.

Optionally, UE1 gives up receiving PSFCH sent using other beams in this time slot, namely PSFCH 1 and PSFCH 3.

Example 2:

As shown in Figure 27, the received PSFCH can be determined according to the priority level, which is applicable to the case of using the same beam with different priorities. UE1 uses different beams and sends PSCCH/PSSCH to UE2, UE3, UE4, and UE5 in time slot 1, time slot 2, time slot 3, and time slot 4 respectively. UE2, UE3, UE4, and UE5 use corresponding PSCCH/PSSCH in time slot 5. Different beams send feedback information PSFCH to UE1.

In the case of multiple PSFCH transmissions in time slot 5, the same beam is used but the priority is different. PSFCH 2 and PSFCH 4 use the same beam to transmit, but the PSFCH priority values are: PSFCH 2 = 1, PSFCH 4 =5.

Based on the different priorities of the four PSFCHs, UE1 selects the beam corresponding to PSFCH 2 with the highest priority (the smallest priority value) for reception. PSFCH 4 using the same beam will also be received. That is: when the transmission of multiple beams of PSFCH corresponds to different PSFCH priorities, but the transmission of multiple beams of PSFCH uses the same beam, then the beam with the highest priority (the smallest priority value) will be the priority of the current beam.

Example 3:

As shown in Figure 28, the received PSFCH can be determined according to the priority level, which is applicable to the situation where different beams are used with the same priority. UE1 uses different beams to send signals to UE2 and UE3 in time slot 1, time slot 2 and time slot 3 respectively. , UE4 sends PSCCH/PSSCH, and UE2, UE3, and UE4 use corresponding different beams to feed back PSFCH to UE1 in time slot 5.

The PSSCH services corresponding to PSFCH 1, PSFCH 2, and PSFCH 3 have different service priorities. The PSFCH priority values are: PSFCH1=3, PSFCH2=1, PSFCH3=1. The smaller the priority value, the higher the corresponding priority. , therefore, therefore, PSFCH 2 priority is equal to PSFCH 3, and has a higher priority than PSFCH 1.

UE1 determines which beam to use to receive the PSFCH according to the different priorities of the three PSFCHs. PSFCH 2 and PSFCH 3, which have the highest priority (the smallest priority value), have the same priority, but the transmitting beams are different. 2 or PSFCH 3:

Condition 1: According to the number of remaining retransmissions of PSSCH: For example, PSFCH 2 corresponds to the TB sent by PSSCH, and after time slot 2, there are 2 retransmissions left; PSFCH 3 corresponds to the TB sent by PSSCH, and after time slot 3, there is 1 retransmission left. Retransmission. Among them, UE1 selects the beam corresponding to the PSFCH (i.e., PSFCH 3) with a smaller number of remaining retransmissions of the TB to receive; or UE1 selects the beam corresponding to the PSFCH (i.e., PSFCH 2) with a large number of remaining retransmissions of the TB to receive.

Optionally, UE1 gives up receiving the PSFCH sent by other beams in this time slot.

Using the above examples 1 to 3, it is possible to decide which N PSFCHs to receive according to the PSFCH priorities. Among them, the PSFCH in time slot K can be sent to UE1 using different beams. UE1 can decide to receive the first N PSFCHs with higher priority (smaller priority value) based on the priorities of multiple PSFCHs, and discard the others. PSFCH, for example, when N=1, UE1 only receives the PSFCH with the highest priority, that is: when N is equal to 1, the total number of beams is K, and the number of beams to be received is N, then UE1 can determine The PSFCH with the highest priority among the K beam PSFCHs is the PSFCH of the N beams (the PSFCH with the highest priority is the PSFCH with the smallest priority value); or, in the case of N≥1, UE1 determines the reception priority based on the device hardware capabilities. The highest N PSFCHs: that is: the total number of beams is K, the number of beams to be received is N, different beams are used to receive K beams PSFCH, UE1 chooses to receive the highest priority among the K beams PSFCH according to the equipment hardware capabilities. The first N PSFCHs (the first N beams with the highest priority are the first N PSFCHs arranged in ascending order of priority values).

It should be pointed out that for the case of the same beam, the PSFCH with the highest priority (the smallest priority value) can be taken as the priority of the current beam. For example, in time slot K, L (L≥2) PSFCHs use the same beam. Receive, select the first beam with the highest priority (the smallest priority value) as the priority of the current beam, and compare it with other beams. The priority of the current beam is higher than other beams except the first beam.

Example 4:

As shown in Figure 29, UE1 can use any of the following solutions to decide not to receive PSFCH of certain beams. For example, UE1 decides based on the PSFCH priority: not to receive PSFCH 1 and PSFCH 3, then UE1 implements any of the following solutions:

(1) UE1 believes that the unreceived PSFCH carries ACK information: that is, UE1 believes that the PSCCH/PSSCH corresponding to this PSFCH has been successfully received/decoded by the receiving UE;

(2) UE1 believes that the unreceived PSFCH carries NACK information: that is, UE1 believes that the PSCCH/PSSCH corresponding to this PSFCH has been received. The UE has failed to receive/decode. If the maximum number of retransmissions is not reached, the corresponding TB needs to be retransmitted.

Using the above example 4, for the PSFCH that does not receive the beam, UE1 can process it as NACK or ACK. In the case of NACK, UE1 does not need to receive the PSFCH, thinking that this PSFCH sends a NACK. In the case of processing the non-received PSFCH as a NACK Under this condition, the TB corresponding to the unreceived PSFCH will be retransmitted or not retransmitted; or, if UE1 does not receive the PSFCH, it thinks that this PSFCH sends an ACK. If the unreceived PSFCH is treated as an ACK, the PSFCH will not be received. The corresponding TB is retransmitted or not retransmitted.

Example 5:

UE1 can decide not to send PSCCH/PSSCH according to the priority. UE1 determines based on some factors (such as data packets to be sent, resource selection, resource pool configuration, etc.) that if the PSCCH/PSSCH corresponding to TB1, TB2, and TB3 is sent through different beams in time slot 1, time slot 2, and time slot 3, then The corresponding PSFCH will be transmitted back through different beams in the same time slot 5.

UE1 sends the PSCCH/PSSCH of TB2 with the highest priority (the smallest priority value) according to the service priority corresponding to PSCCH/PSSCH, thereby determining to receive PSFCH 2 on the corresponding beam in time slot 5.

For the PSCCH/PSSCH of TB1 and TB3 with lower priority, as shown in Figure 30, any of the following solutions can be used before time slot 1:

(1) If UE1 has selected time slot 1 and time slot 3 as the resources to be transmitted for TB1 and TB3, and determines to receive PSFCH 2 on the corresponding beam in time slot 5, in order to avoid conflicts, it will If TB1 and TB3 are not sent, this transmission will be discarded.

(2) If UE1 has not determined the transmission resources of TB1 and TB3, that is, when the resource selection of TB1 and TB3 has not been triggered, or the resource selection has been triggered but the transmission resources have not been selected, time slot 1 and time slot 3 will be removed from TB1. and be excluded from the candidate sending resource set of TB3.

Example 6:

If UE1 has selected time slot 1 and time slot 3 as the resources to be sent for TB1 and TB3, that is, when the transmission resources of TB1 and TB3 have been determined, time slot 1 and time slot 3 will not be used. After sending TB1 and TB3, resource reselection will be triggered (triggering UE1 to reselect the resources of TB1 and TB3)

Using the above examples 5 and 6, it can be decided not to send the corresponding PSSCH according to the PSFCH priority. For example, the total number of beams is J, and the number of beams to be sent and received is M. Since UE1 predicts that M PSFCH multi-beams will be transmitted simultaneously in time slot K, UE1 determines based on the priorities of the multiple PSFCHs. Decide to send the first M PSSCHs with higher priorities (smaller priority values), where M=1, that is, UE1 sends the PSSCH with the highest priority; or M≥1, that is, UE1 sends the first M PSSCHs with the highest priority. . In time slot K, L (L≥2) PSFCHs are received using the same beam, and the highest priority among them (the smallest priority value) is selected as the priority of this beam, and compared with other beams.

For the J-M PSCCH/PSSCHs other than M that have not been sent, at least one of the following operations can be performed:

(1) Directly discard this transmission;

(2) If the transmission resource has been selected, resource reselection is performed to select the corresponding PSSCH resource that can receive the PSFCH beam;

(3) When resource selection has not been triggered, or resource selection has been triggered but transmission resources have not been selected, the PSCCH/PSSCH time slot resources corresponding to the conflicting PSFCH are excluded from the candidate resource set.

Example 7:

As shown in Figure 31, in the case of centralized resource selection, UE1 performs resource selection or resource reselection on the TB to be sent (the reasons for resource reselection include but are not limited to the above example 6), and places TB1 and TB2 in Transmit in time slot 1 and time slot 2, so that UE1 can use the same beam to receive all corresponding PSFCH feedback information in time slot 3; send TB3, TB4 and TB5 in time slot 3, time slot 4 and time slot 5, so that UE1 can receive all corresponding PSFCH feedback information using the same beam in time slot 6.

Through the mapping relationship between time slot resources and PSFCH, UE1 can know in advance how to select resources to ensure that all PSFCHs can be received in the same time slot and in the same beam.

Example 8:

As shown in Figure 32, regarding the mapping relationship between time slot resources and PSFCH, when using a resource pool to process time slot resources and PSFCH resource mapping, any of the following conditions can be adopted, that is: PSFCH in the same time slot needs to Use the same beam to send or receive.

(1) Transmission conditions: If different UEs send PSFCH in the same time slot, they need to use the same beam to send, such as PSFCH in time slot 5. Two different UEs need to use the same beam to send PSFCH to ensure that UE1 can use it in time slot 5. PSFCH is received on the same beam.

(2) Reception conditions: UE1 uses the same beam to receive PSFCH in one time slot according to the mapping relationship between time slot resources and PSFCH. For example, time slot 5, time slot 7 or time slot 8 all use the same beam to receive PSFCH.

Using the above examples 7 to 8, during resource selection/resource reselection, the PSSCH corresponding to the PSFCH of the same beam pair can be collectively transmitted according to the corresponding situation of the PSSCH and PSFCH resources, that is, the PSFCH on slot K uses the same beam. And can be all received by UE1. Reasonable resources can be selected after comprehensive consideration of PSSCH priority, PDB of service packets and other information.

To sum up, using the above examples, it is possible to decide which beams of PSFCH to receive/not receive based on conditions (such as priority, etc.), and decide to send/not send PSCCH/of which beams based on conditions (such as priority, etc.) PSSCH. Among them, for the PSFCH that does not receive the beam, the NACK/ACK solution is used, and the PSFCH that does not receive the beam is processed as ACK/NACK to ensure that the subsequent processes of PSCCH/PSSCH transmission/PSFCH reception can continue without interruption. Through resource selection/resource reselection, it can further ensure that the TB corresponding to the unsent PSCCH/PSSCH and unreceived PSFCH has the opportunity to be sent again, further reducing the packet loss rate of the multi-beam system and improving the reliability of the multi-beam system.

It should be noted that the above examples can be combined with various possibilities in the above embodiments of the present application, which will not be described again here.

Figure 33 is a schematic block diagram of a first device 3300 according to an embodiment of the present application. The first device 3300 may include: a first processing unit 3310, configured to determine N beams to receive PSFCH from K beams; the N and the K are positive integers, and the N is less than or equal to the K; The K beams are beams used by at least two second devices to transmit PSFCH, and the at least two second devices are different devices; the first receiving unit 3320 is used to receive the PSFCH of N beams on the first time slot. .

It should be pointed out that when the first device 3300 serves as a receiving end, it may include the first processing unit. The first device 3300 may also serve as a transmitting end and can perform "PSFCH receiving processing" or " PSCCH/PSSCH transmission processing”. Optionally, the first device 3300 may also include: a fourth processing unit, configured to determine M beams from J beams to transmit the PSCCH/PSSCH; the M and J are positive integers, and the M is less than or equal to The J; first sending unit is used to send PSCCH/PSSCH on the M beams; the sending PSCCH/PSSCH on the M beams is used to obtain the PSFCH in response to the PSCCH/PSSCH.

In a possible implementation, the first processing unit is configured to determine to receive the N beams PSFCH on the first time slot according to a first condition; the first condition is used to determine K beams The PSFCH of the N beams in the PSFCH; the PSFCH of the K beams are PSFCHs sent by at least two second devices (the two second devices may be different devices), and K is greater than or equal to 2.

In a possible implementation, the PSFCHs of the N beams include: one or more PSFCHs.

In a possible implementation, a second processing unit is further included, configured not to receive PSFCHs of K-N beams other than N among the K beams on the first time slot.

(4)Congestion conditions of the resource pool.

In a possible implementation, a third processing unit is also included, used for, when N is equal to 1, the first device determines that the PSFCH with the highest priority among the K beam PSFCHs is the N PSFCH of the beam; the PSFCH with the highest priority is the PSFCH with the smallest priority value.

In a possible implementation, a third processing unit is also included, configured to select and receive the K beams PSFCH according to the hardware capabilities of the device when N is greater than 1 and different beams are used to receive the K beams PSFCH. The top N PSFCHs with the highest priority; the top N beams with the highest priority are the top N PSFCHs arranged in ascending order of priority values.

In a possible implementation, a third processing unit is also included, configured to select the first beam corresponding to the PSFCH with the highest priority among the K beams PSFCH when the same beam is used to receive the K beams PSFCH. is the priority of the current beam, which is higher than other beams except the first beam; determine the PSFCH corresponding to the same first beam among the K beam PSFCHs as the PSFCH for N beams.

In a possible implementation, the second processing unit is configured to not receive the PSFCH of K-N beams in a manner including at least one of the following (1)-(2):

(1) Handle unreceived PSFCH as NACK.

In some examples, when a PSFCH that is not received is treated as a NACK, the TB corresponding to the PSFCH that is not received is retransmitted or not retransmitted.

(2) Process the unreceived PSFCH as ACK.

In some examples, when the unreceived PSFCH is treated as an ACK, the TB corresponding to the unreceived PSFCH is retransmitted or not retransmitted.

The first device 3300 in the embodiment of the present application can implement the corresponding functions of the first device in the foregoing method embodiment. For the corresponding processes, functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the first device 3300, please refer to the corresponding description in the above method embodiment, and will not be described again here. It should be noted that the functions described for each module (sub-module, unit or component, etc.) in the first device 3300 of the application embodiment can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by the same module. A module (submodule, unit or component, etc.) is implemented.

Figure 34 is a schematic block diagram of a first device 3400 according to an embodiment of the present application. The first device 3400 may include: a fourth processing unit 3410, configured to determine M beams to transmit PSCCH/PSSCH from J beams; the M and the J are positive integers, and the M is less than or equal to the J; The first sending unit 3420 is configured to send PSCCH/PSSCH on the M beams; and the sending PSCCH/PSSCH on the M beams is used to obtain a PSFCH in response to the PSCCH/PSSCH.

It should be pointed out that when the first device 3400 serves as a transmitter, it may include the fourth processing unit. The first device 3400 may also serve as a receiver and can perform "PSFCH reception processing" or "PSFCH reception processing". PSCCH/PSSCH transmission processing”. Optionally, the first device 3400 may also include: a first processing unit, configured to determine N beams to receive the PSFCH from K beams; the N and the K are positive integers, and the N is less than or equal to the K; the K beams are beams used by at least two second devices to transmit PSFCH, and the at least two second devices are different devices; the first receiving unit is used to receive N on the first time slot Beam PSFCH.

In a possible implementation, the fourth processing unit is used to determine to send PSCCH/PSSCH on the M beams according to a second condition; the second condition is used to determine J beams PSCCH/PSSCH The M beams among the beams to be transmitted; the J is greater than or equal to 2, and J is greater than or equal to M.

In a possible implementation, the M to-be-received beams used to receive the PSFCH and the M to-be-sent beams used to transmit the PSCCH/PSSCH are the same beam pair.

In a possible implementation, a fifth processing unit is also included, configured not to transmit the PSCCH/PSSCH of J-M beams other than M among the J beams.

(1) J beams PSFCH correspond to PSCCH/PSSCH and carry the service priority corresponding to the data packet;

(4)Congestion conditions of the resource pool.

In a possible implementation, the method further includes: a sixth processing unit, configured to send the PSCCH/PSSCH with the highest priority among the J beams PSCCH/PSSCH when M is equal to 1. The PSCCH/PSSCH with the highest priority is the PSCCH/PSSCH with the smallest priority value.

In a possible implementation, the method further includes: a sixth processing unit, configured to send the first M PSCCHs/PSSCHs with the highest priority among the J beams of PSCCHs/PSSCHs when M is greater than 1. The top M PSCCHs/PSSCHs with the highest priority are the top M PSCCHs/PSSCHs arranged in ascending order of priority values.

In a possible implementation, the fifth processing unit is configured to not transmit the PSCCH/PSSCH of the J-M beams in a manner including at least one of the following (1) (3):

(1) The first device discards the PSCCH/PSSCH that is not sent;

(2) The first device performs resource reselection on the PSCCH/PSSCH that is not to be sent, and sends it on the resources corresponding to the multi-beam PSFCH;

(3) The first device performs conflict avoidance processing on the PSCCH/PSSCH that is not sent, and deletes the resources corresponding to the multi-beam PSFCH from the candidate resource set.

In a possible implementation, the method further includes: a seventh processing unit, configured to perform resource selection or resource reselection for the PSCCH/PSSCH, based on the corresponding relationship between the PSCCH/PSSCH and the PSFCH, Get the beam pair. The PSCCH/PSSCH belonging to the same beam pair and corresponding to the PSFCH are collectively transmitted using the same beam.

The first device 3400 in the embodiment of the present application can implement the corresponding functions of the first device in the foregoing method embodiment. For the corresponding processes, functions, implementation methods and beneficial effects of each module (sub-module, unit or component, etc.) in the first device 3400, please refer to the corresponding description in the above method embodiment, and will not be described again here. It should be noted that the functions described for each module (sub-module, unit or component, etc.) in the first device 3400 in the application embodiment can be implemented by different modules (sub-module, unit or component, etc.), or can be implemented by the same module. A module (submodule, unit or component, etc.) is implemented.

Figure 35 is a schematic structural diagram of a communication device 3500 according to an embodiment of the present application. The communication device 3500 includes a processor 3510, and the processor 3510 can call and run a computer program from the memory, so that the communication device 3500 implements the method in the embodiment of the present application.

Optionally, communication device 3500 may also include memory 3520. The processor 3510 can call and run the computer program from the memory 3520, so that the communication device 3500 implements the method in the embodiment of the present application.

The memory 3520 may be a separate device independent of the processor 3510, or may be integrated into the processor 3510.

Optionally, the communication device 3500 may also include a transceiver 3530, and the processor 3510 may control the transceiver 3530 to communicate with other devices. Specifically, the communication device 3500 may send information or data to other devices, or receive information or data sent by other devices. .

Among them, the transceiver 3530 may include a transmitter and a receiver. The transceiver 3530 may further include an antenna, and the number of antennas may be one or more.

Optionally, the communication device 3500 can be a terminal device serving as the sending end in the embodiment of the present application, and the communication device 3500 can implement the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application. For the sake of brevity, they are not mentioned here. Again.

Optionally, the communication device 3500 can be a terminal device serving as the receiving end in the embodiment of the present application, and the communication device 3500 can implement the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application. For the sake of brevity, they are not mentioned here. Again.

Figure 36 is a schematic structural diagram of a chip 3600 according to an embodiment of the present application. The chip 3600 includes a processor 3610, and the processor 3610 can call and run a computer program from the memory to implement the method in the embodiment of the present application.

Optionally, chip 3600 may also include memory 3620. The processor 3610 can call and run the computer program from the memory 3620 to implement the method executed by the terminal device or the terminal device in the embodiment of the present application.

Among them, the memory 3620 can be a separate device independent of the processor 3610, or can be integrated in the processor 3610.

Optionally, the chip 3600 may also include an input interface 3630. The processor 3610 can control the input interface 3630 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.

Optionally, the chip 3600 may also include an output interface 3640. The processor 3610 can control the output interface 3640 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.

Optionally, the chip can be applied to the terminal device serving as the sending end in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application. For the sake of brevity, details will not be repeated here.

Optionally, the chip can be applied to the terminal device serving as the receiving end in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the terminal device in the various methods of the embodiment of the present application. For the sake of brevity, details will not be repeated here.

The chips applied to the terminal device as the sending end and the terminal device as the receiving end may be the same chip or different chips.

It should be understood that the chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.

The processor mentioned above can be a general-purpose processor, a digital signal processor (DSP), an off-the-shelf programmable gate array (FPGA), an application specific integrated circuit (ASIC), or Other programmable logic devices, transistor logic devices, discrete hardware components, etc. The above-mentioned general processor may be a microprocessor or any conventional processor.

The memory mentioned above may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Among them, non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically removable memory. Erase electrically programmable read-only memory (EPROM, EEPROM) or flash memory. Volatile memory can be random access memory (RAM).

It should be understood that the above memory is an exemplary but not restrictive description. For example, the memory in the embodiment of the present application can also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is, memories in embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

Figure 37 is a schematic block diagram of a communication system 3700 according to an embodiment of the present application. The communication system 3700 includes a first device 3710 as a receiving end and a first device 3720 as a sending end. Wherein, the first device 3710 as the receiving end may include: a first processing unit, configured to determine N beams to receive the PSFCH from K beams; the N and the K are positive integers, and the N is less than or equal to the K; the K beams are beams used by at least two second devices to transmit PSFCH, and the at least two second devices are different devices; the first receiving unit is used to receive N on the first time slot Beam PSFCH. The first device 3720 as the sending end may include: a fourth processing unit, configured to determine M beams to transmit PSCCH/PSSCH from J beams; the M and the J are positive integers, and the M is less than or equal to the J; The first sending unit is used to send PSCCH/PSSCH on the M beams; the sending PSCCH/PSSCH on the M beams is used to obtain the PSFCH in response to the PSCCH/PSSCH. Among them, the first device 3710 as the receiving end can be used to implement the receiving function of the corresponding PSFCH implemented by the first device in the above method, and the first device 3720 as the sending end can be used to implement the receiving function implemented by the first device in the above method. The corresponding PSCCH/PSSCH transmission function. For the sake of brevity, no further details will be given here.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using software, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions according to the embodiments of the present application are generated in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted over a wired connection from a website, computer, server, or data center (such as coaxial cable, optical fiber, Digital Subscriber Line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) means to transmit to another website, computer, server or data center. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more available media. The available media may be magnetic media (eg, floppy disk, hard disk, tape), optical media (eg, DVD), or semiconductor media (eg, Solid State Disk (SSD)), etc.

It should be understood that in the various embodiments of the present application, the size of the sequence numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes any limitation.

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

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

Claims

A multi-beam receiving method, the method includes:

The first device determines N beams to receive the physical sidelink feedback channel PSFCH from the K beams; the N and the K are positive integers, and the N is less than or equal to the K;

The K beams are beams used by at least two second devices to transmit PSFCH, and the at least two second devices are different devices;

The first device receives the PSFCH of N beams on the first time slot.
The method according to claim 1, wherein the first device determines N beams to receive the PSFCH from K beams, including:

The first device determines N beams from the K beams to receive the PSFCH according to the first condition;

The first condition is used to determine the PSFCH of N beams among the K beams.
The method according to claim 1 or 2, wherein the PSFCHs of the N beams include: one or more PSFCHs.
The method according to claim 1 or 2, further comprising:

The first device does not receive the PSFCH of K-N beams other than N among the K beams on the first time slot.
The method of claim 2, wherein the first condition includes at least one of the following:

The K beams PSFCH correspond to the physical sidelink control channel PSCCH/physical sidelink shared channel PSSCH and carry the corresponding priority of the data packet;

K beams PSFCH correspond to the remaining number of retransmissions of the TB after the PSCCH/PSSCH transmission time;

K beams PSFCH correspond to the packet delay budget of the data packet corresponding to the PSCCH/PSSCH transmission time;

Congestion conditions for resource pools.
The method according to claim 5, wherein the first device determines the PSFCHs of the N beams among the K beams PSFCH according to the priorities of the K beams PSFCH, including:

When N is equal to 1, the first device determines that the PSFCH with the highest priority among the K beam PSFCHs is the PSFCH of the N beams;

The PSFCH with the highest priority is the PSFCH with the smallest priority value.
The method according to claim 5, wherein the first device determines the PSFCHs of the N beams among the K beams PSFCH according to the priorities of the K beams PSFCH, including:

When N is greater than 1 and different beams are used to receive the K beam PSFCHs, the first device selects to receive the top N PSFCHs with the highest priority among the K beam PSFCHs according to the device hardware capabilities;

The top N beams with the highest priority are the top N PSFCHs arranged in ascending order of priority values.
The method according to claim 5, wherein the first device determines the PSFCHs of the N beams among the K beams PSFCH according to the priorities of the K beams PSFCH, including:

When the same beam is used to receive the K beam PSFCHs, the first device selects the first beam corresponding to the PSFCH with the highest priority among the K beams PSFCH as the priority of the current beam, and the priority of the current beam The level is higher than other beams except said first beam;

The first device determines the PSFCH corresponding to the same first beam among the K beam PSFCHs as the PSFCH of the N beams.
The method according to claim 4, wherein the first device does not receive PSFCH of K-N beams on the first time slot, including at least one of the following:

The first device processes the PSFCH that is not received as a NACK;

The first device handles the PSFCH that is not received as an ACK.
The method of claim 9, further comprising:

When the first device processes the PSFCH that is not received as a NACK, it retransmits or does not retransmit the TB corresponding to the PSFCH that is not received;

When the first device processes the unreceived PSFCH as an ACK, the first device retransmits or does not retransmit the TB corresponding to the unreceived PSFCH.
A multi-beam transmission method, the method includes:

The first device determines M beams from J beams to transmit the physical sidelink control channel PSCCH/physical sidelink shared channel PSSCH; the M and the J are positive integers, and the M is less than or equal to the J;

The first device sends PSCCH/PSSCH on the M beams;

The sending of PSCCH/PSSCH on M beams is used to obtain the physical sidelink feedback channel PSFCH in response to the PSCCH/PSSCH.
The method according to claim 11, wherein the first device determines M beams to transmit PSCCH/PSSCH from J beams, including:

The first device determines M beams from J beams to transmit the PSCCH/PSSCH according to the second condition;

The second condition is used to determine the PSCCH/PSSCH of M beams among J beams.
The method according to claim 11 or 12, wherein the M to-be-received beams used to receive the PSFCH and the M to-be-sent beams used to transmit the PSCCH/PSSCH are the same beam pair.
The method according to claim 11 or 12, further comprising:

The first device does not transmit the PSCCH/PSSCH of J-M beams other than M among the J beams.
The method according to claim 12, wherein the second condition includes at least one of the following:

J beams PSFCH correspond to PSCCH/PSSCH and carry the service priority corresponding to the data packet;

J beams PSFCH correspond to the remaining number of retransmissions of the TB after the PSCCH/PSSCH transmission time;

The packet delay budget of the data packet corresponding to the PSCCH/PSSCH transmission time of J beams PSFCH;

Congestion conditions for resource pools.
The method according to claim 15, wherein the first device sends the PSCCH/PSSCH of the M beams according to the priorities of the J beams PSCCH/PSSCH, including:

When M is equal to 1, the first device sends the PSCCH/PSSCH with the highest priority among the J beams PSCCH/PSSCH;

The PSCCH/PSSCH with the highest priority is the PSCCH/PSSCH with the smallest priority value.
The method according to claim 15, wherein the first device sends the PSCCH/PSSCH of the M beams according to the priorities of the J beams PSCCH/PSSCH, including:

If M is greater than 1, the first device sends the first M PSCCHs/PSSCHs with the highest priority among the J beams of PSCCHs/PSSCHs;

The top M PSCCHs/PSSCHs with the highest priority are the top M PSCCHs/PSSCHs arranged in ascending order of priority values.
The method according to claim 14, wherein the first device does not send PSCCH/PSSCH of J-M beams other than M among the J beams, including at least one of the following:

The first device performs discard processing on the PSCCH/PSSCH that is not sent;

The first device performs resource reselection on the PSCCH/PSSCH that is not sent, and sends it on the resources corresponding to the multi-beam PSFCH;

The first device performs conflict avoidance processing on the PSCCH/PSSCH that is not sent, and deletes resources corresponding to the multi-beam PSFCH from the candidate resource set.
The method of claim 15, further comprising:

When the first device performs resource selection or resource reselection for the PSCCH/PSSCH, obtain a beam pair according to the corresponding relationship between the PSCCH/PSSCH and the PSFCH;

The PSCCH/PSSCH belonging to the same beam pair and corresponding to the PSFCH are collectively transmitted using the same beam.
A first device comprising:

The first processing unit is configured to determine N beams to receive the physical sidelink feedback channel PSFCH from the K beams; the N and the K are positive integers, and the N is less than or equal to the K; the K beams are At least two second devices are used to transmit PSFCH beams, and the at least two second devices are different devices;

The first receiving unit is configured to receive the PSFCH of N beams on the first time slot.
The device according to claim 20, wherein the first processing unit is used for:

According to the first condition, determine N beams from the K beams to receive the PSFCH;

The first condition is used to determine the PSFCH of N beams among the K beams.
The device according to claim 20 or 21, wherein the PSFCHs of the N beams include: one or more PSFCHs.
The device according to claim 20 or 21, further comprising a second processing unit for:

On the first time slot, the PSFCHs of K-N beams other than N among the K beams are not received.
The device according to claim 21, wherein the first condition includes at least one of the following:

The K beams PSFCH correspond to the PSCCH/PSSCH carrying the priority of the data packet;

K beams PSFCH correspond to the remaining number of retransmissions of the TB after the PSCCH/PSSCH transmission time;

K beams PSFCH correspond to the packet delay budget of the data packet corresponding to the PSCCH/PSSCH transmission time;

Congestion conditions for resource pools.
The device of claim 24, further comprising a third processing unit for:

When N is equal to 1, the first device determines that the PSFCH with the highest priority among the K beam PSFCHs is the PSFCH of the N beams;

The PSFCH with the highest priority is the PSFCH with the smallest priority value.
The device of claim 24, further comprising a third processing unit for:

When N is greater than 1 and different beams are used to receive the K beam PSFCHs, the top N PSFCHs with the highest priority among the K beam PSFCHs are selected to be received according to the equipment hardware capabilities;

The top N beams with the highest priority are the top N PSFCHs arranged in ascending order of priority values.
The device of claim 24, further comprising a third processing unit for:

When the same beam is used to receive the K beam PSFCHs, the first beam corresponding to the PSFCH with the highest priority among the K beams PSFCH is selected as the priority of the current beam, and the priority of the current beam is higher than all other beams. Beams other than the first beam mentioned above;

The PSFCH corresponding to the same first beam among the K beam PSFCHs is determined as the PSFCH of the N beams.
The device according to claim 22, wherein the second processing unit is configured to not receive the PSFCH of K-N beams in a manner including at least one of the following:

Treat unreceived PSFCH as NACK;

A PSFCH that is not received is treated as an ACK.
The device according to claim 27, wherein the second processing unit is used for:

When processing a PSFCH that is not received as a NACK, retransmit or not retransmit the TB corresponding to the PSFCH that is not received;

When the unreceived PSFCH is processed as an ACK, the TB corresponding to the unreceived PSFCH is retransmitted or not retransmitted.
A first device comprising:

The fourth processing unit is used to determine M beams from J beams to transmit the physical sidelink control channel PSCCH/physical sidelink shared channel PSSCH; the M and the J are positive integers, and the M is less than or equal to the J. ;

The first sending unit is used to send PSCCH/PSSCH on the M beams; the sending PSCCH/PSSCH on the M beams is used to obtain the physical sidelink feedback channel PSFCH in response to the PSCCH/PSSCH.
The device according to claim 30, wherein the fourth processing unit is used for:

According to the second condition, M beams are determined from J beams to transmit PSCCH/PSSCH;

The second condition is used to determine the PSCCH/PSSCH of M beams among J beams.
The device according to claim 30 or 31, wherein the M beams to be received for receiving the PSFCH and the M beams to be transmitted for transmitting the PSCCH/PSSCH are the same beam pair.
The device according to claim 30 or 31, further comprising a fifth processing unit for:

The PSCCH/PSSCH of J-M beams other than M among the J beams are not transmitted.
The device according to claim 31, wherein the second condition includes at least one of the following:

J beams PSFCH correspond to PSCCH/PSSCH and carry the service priority corresponding to the data packet;

J beams PSFCH correspond to the remaining number of retransmissions of the TB after the PSCCH/PSSCH transmission time;

The packet delay budget of the data packet corresponding to the PSCCH/PSSCH transmission time of J beams PSFCH;

Congestion conditions for resource pools.
The device of claim 34, further comprising: a sixth processing unit, configured to:

When M is equal to 1, the PSCCH/PSSCH with the highest priority among the J beams PSCCH/PSSCH is transmitted;

The PSCCH/PSSCH with the highest priority is the PSCCH/PSSCH with the smallest priority value.
The device of claim 34, further comprising: a sixth processing unit, configured to:

When M is greater than 1, the first M PSCCH/PSSCHs with the highest priority among the J beams PSCCH/PSSCH are sent;

The top M PSCCHs/PSSCHs with the highest priority are the top M PSCCHs/PSSCHs arranged in ascending order of priority values.
The device according to claim 33, wherein the fifth processing unit is configured to not transmit the PSCCH/PSSCH of the J-M beams in a manner including at least one of the following:

The PSCCH/PSSCH that is not sent will be discarded;

Perform resource reselection on the PSCCH/PSSCH that is not to be sent, and send it on the resources corresponding to the multi-beam PSFCH;

Conflict avoidance processing is performed on the PSCCH/PSSCH not to be transmitted, and resources corresponding to the multi-beam PSFCH are deleted from the candidate resource set.
The device of claim 34, further comprising: a seventh processing unit, configured to:

When resource selection or resource reselection is performed for the PSCCH/PSSCH, a beam pair is obtained according to the corresponding relationship between the PSCCH/PSSCH and the PSFCH;

The PSCCH/PSSCH belonging to the same beam pair and corresponding to the PSFCH are collectively transmitted using the same beam.
A first device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the instructions of claims 1 to The method described in any one of 10.
A first device, including: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, so that the terminal device executes the instructions of claims 11 to 11 The method described in any one of 19.
A chip includes: a processor for calling and running a computer program from a memory, so that a device installed with the chip executes the method according to any one of claims 1 to 10.
A chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the method according to any one of claims 11 to 19.
A computer-readable storage medium for storing a computer program, which when the computer program is run by a device, causes the device to perform the method according to any one of claims 1 to 10.
A computer-readable storage medium used to store a computer program, which when the computer program is run by a device, causes the device to perform the method according to any one of claims 11 to 19.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method according to any one of claims 1 to 10.
A computer program product comprising computer program instructions, the computer program instructions causing a computer to perform the method according to any one of claims 11 to 19.
A computer program that causes a computer to perform the method according to any one of claims 1 to 10.
A computer program causing a computer to perform the method according to any one of claims 11 to 19.
A communications system including:

A first device as a sending end, configured to perform the method according to any one of claims 1 to 10; or

The first device serving as the receiving end is configured to perform the method according to any one of claims 11 to 19.