CN117397173A

CN117397173A - Information transmission method, device and storage medium

Info

Publication number: CN117397173A
Application number: CN202180098595.7A
Authority: CN
Inventors: 赵振山
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-09-03
Filing date: 2021-09-03
Publication date: 2024-01-12
Also published as: WO2023029008A1

Abstract

The application provides an information transmission method, information transmission equipment and a storage medium, which are used for improving transmission quality of side communication. The method comprises the following steps: the terminal device for sidestream communication transmits a sidestream channel to the opposite device by determining a airspace transmission filter for sidestream communication, using the airspace transmission filter. The terminal device for sidestream communication receives sidestream channels from the contralateral device by determining a spatial reception filter for sidestream communication using the spatial reception filter. Wherein, the sidestream channels comprise any one of a physical sidestream control channel PSCCH, a physical sidestream shared channel PSSCH, a physical sidestream feedback channel PSFCH or a physical sidestream broadcast channel PSBCH. By adopting the scheme, the terminal equipment selects a proper airspace transmitting/receiving filter, and the transmitting/receiving capability of the terminal equipment is improved, so that the overall transmission quality of sidestream communication is improved.

Description

Information transmission method, device and storage medium

Technical Field

The embodiment of the application relates to the technical field of wireless communication, in particular to an information transmission method, information transmission equipment and a storage medium.

Background

In order to increase the transmission rate of the sidestream communication system, a millimeter wave band is used in the sidestream communication system. In the sidestream millimeter wave transmission system, how to determine the spatial transmission filter (including the spatial transmission filter and the spatial reception filter) of the terminal device for sidestream communication is a problem to be solved at present.

Disclosure of Invention

The embodiment of the application provides an information transmission method, information transmission equipment and a storage medium, and improves the transmission quality of side communication.

A first aspect of an embodiment of the present application provides an information transmission method, applied to a first device, where the method includes: a first spatial transmit filter for sidestream communications is determined, and a first sidestream channel is transmitted to a second device using the first spatial transmit filter.

A second aspect of the embodiments of the present application provides an information transmission method, applied to a second device, where the method includes: a first spatial receive filter for sidestream communications is determined, and a first sidestream channel from a first device is received using the first spatial receive filter.

A third aspect of embodiments of the present application provides a first apparatus, including: a processing module and a transmitting module. The processing module is used for determining a first airspace transmission filter for sidestream communication; and the transmitting module is used for transmitting the first side channel to the second equipment by using the first spatial domain transmitting filter.

A fourth aspect of the embodiments of the present application provides a second device, including: a processing module and a receiving module. The processing module is used for determining a first airspace receiving filter for sidestream communication; and the receiving module is used for receiving a first side channel from the first equipment by using the first spatial domain receiving filter.

A fifth aspect of embodiments of the present application provides an electronic device, including: a memory for storing a computer program and a processor for calling and running the computer program from the memory, such that the processor runs the computer program to perform the method according to the first aspect.

A sixth aspect of embodiments of the present application provides an electronic device, including: a memory for storing a computer program and a processor for calling and running the computer program from the memory, such that the processor runs the computer program to perform the method according to the second aspect.

A seventh aspect of embodiments of the present application provides a computer storage medium storing a computer program which, when run on a computer, causes the computer to perform the method according to the first aspect.

An eighth aspect of the embodiments of the present application provides a computer storage medium storing a computer program which, when run on a computer, causes the computer to perform the method according to the second aspect.

A ninth aspect of the embodiments of the present application provides a computer program product which, when run on a computer, causes the computer to perform the method as described in the first aspect.

A tenth aspect of the embodiments of the present application provides a computer program product which, when run on a computer, causes the computer to perform the method according to the second aspect.

The embodiment of the application provides an information transmission method, information transmission equipment and a storage medium, which are used for improving the transmission quality of sidestream communication. The method comprises the following steps: the terminal device for sidestream communication transmits a sidestream channel to the opposite device by determining a airspace transmission filter for sidestream communication, using the airspace transmission filter. The terminal device for sidestream communication receives sidestream channels from the contralateral device by determining a spatial reception filter for sidestream communication using the spatial reception filter. Wherein, the sidestream channels comprise any one of a physical sidestream control channel PSCCH, a physical sidestream shared channel PSSCH, a physical sidestream feedback channel PSFCH or a physical sidestream broadcast channel PSBCH. By adopting the scheme, the terminal equipment selects a proper airspace transmitting/receiving filter, and the transmitting/receiving capability of the terminal equipment is improved, so that the overall transmission quality of sidestream communication is improved.

Drawings

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application;

fig. 2 is a second application scenario schematic diagram provided in the embodiment of the present application;

fig. 3 is a third application scenario schematic diagram provided in an embodiment of the present application;

fig. 4 is a schematic diagram of an application scenario provided in an embodiment of the present application;

fig. 5 is a schematic diagram of a timeslot structure according to an embodiment of the present application;

fig. 6 is a schematic diagram two of a timeslot structure provided in an embodiment of the present application;

fig. 7 is a schematic diagram of a PSFCH resource provided in an embodiment of the present application;

fig. 8 is a schematic diagram of a system without beamforming;

fig. 9 is a schematic diagram of a system using beamforming;

fig. 10 is a schematic diagram of determining an optimal transmit beam by a transmitting UE according to an embodiment of the present application;

fig. 11 is a schematic diagram of determining an optimal receiving beam by a receiving end UE according to an embodiment of the present application;

fig. 12 is a schematic interaction diagram of an information transmission method according to an embodiment of the present application;

fig. 13 is a second interaction diagram of the information transmission method according to the embodiment of the present application;

fig. 14 is an interaction diagram III of an information transmission method according to an embodiment of the present application;

fig. 15 is a schematic diagram of a timeslot/scenario of an information transmission method according to an embodiment of the present application;

fig. 16 is an interaction diagram of an information transmission method according to an embodiment of the present application;

Fig. 17 is an interaction diagram fifth of the information transmission method provided in the embodiment of the present application;

fig. 18 is a sixth interaction schematic diagram of the information transmission method provided in the embodiment of the present application;

fig. 19 is a schematic structural diagram of a first device according to an embodiment of the present application;

fig. 20 is a schematic structural diagram of a second device according to an embodiment of the present application;

fig. 21 is a schematic hardware structure diagram of an electronic device according to an embodiment of the present application;

fig. 22 is a second schematic hardware structure of the electronic device according to the embodiment of the present application.

Detailed Description

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

The information transmission method provided by the application can be applied to various communication systems, such as: long term evolution (Long Term Evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) telecommunications system, fifth generation (5th Generation,5G) mobile telecommunications system, or new radio access technology (new radio access technology, NR). The 5G mobile communication system may include a non-independent Networking (NSA) and/or an independent networking (SA), among others.

The information transmission method provided by the application can also be applied to machine-type communication (machine type communication, MTC), inter-machine communication long term evolution technology (Long Term Evolution-machine, LTE-M), device-to-device (D2D) network, machine-to-machine (machine to machine, M2M) network, internet of things (internet of things, ioT) network or other networks. The IoT network may include, for example, an internet of vehicles. The communication modes in the internet of vehicles system are generally called as vehicle to other devices (V2X, X may represent anything), for example, the V2X may include: vehicle-to-vehicle (vehicle to vehicle, V2V) communication, vehicle-to-infrastructure (vehicle to infrastructure, V2I) communication, vehicle-to-pedestrian communication (vehicle to pedestrian, V2P) or vehicle-to-network (vehicle to network, V2N) communication, etc.

The information transmission method provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system and the like. The present application is not limited in this regard.

In the embodiment of the present application, the terminal device may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment.

The terminal device may be a device providing voice/data connectivity to a user, e.g., a handheld device with wireless connectivity, an in-vehicle device, etc. Currently, some examples of terminals may be: a mobile phone (mobile phone), a tablet (pad), a computer with wireless transceiver function (e.g., a notebook, a palm, etc.), a mobile internet device (mobile internet device, MID), a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in an industrial control (industrial control), a wireless terminal in an unmanned (self-drive), a wireless terminal in a telemedicine (remote medical), a wireless terminal in a smart grid (smart grid), a wireless terminal in a transportation security (transportation safety), a wireless terminal in a smart city (smart city), a wireless terminal in a smart home (smart home), a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a wireless terminal in a wearable device, a land-based device, a future-mobile terminal in a smart city (smart city), a public network (35G) or a future mobile communication device, etc.

The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wearing and developing wearable devices by applying a wearable technology, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.

Furthermore, the terminal device may also be a terminal device in an internet of things (Internet of things, ioT) system. IoT is an important component of future information technology development, and its main technical feature is to connect an item with a network through a communication technology, so as to implement man-machine interconnection and an intelligent network for object interconnection. IoT technology may enable massive connectivity, deep coverage, and terminal power saving through, for example, narrowband (NB) technology.

In addition, the terminal device may further include sensors such as an intelligent printer, a train detector, and a gas station, and the main functions include collecting data (part of the terminal device), receiving control information and downlink data of the network device, and transmitting electromagnetic waves to transmit uplink data to the network device.

In this embodiment of the present application, the network device may be any device having a wireless transceiver function. Network devices include, but are not limited to: an evolved Node B (eNB), a radio network controller (radio network controller, RNC), a Node B (Node B, NB), a base station controller (base station controller, BSC), a base transceiver station (base transceiver station, BTS), a home base station (home evolved NodeB, or a home Node B, HNB, for example), a Base Band Unit (BBU), an Access Point (AP) in a wireless fidelity (wireless fidelity, wiFi) system, a wireless relay Node, a wireless backhaul Node, a transmission point (transmission point, TP), or a transmission reception point (transmission and reception point, TRP), etc., may also be 5G, e.g., NR, a gNB in a system, or a transmission point (TRP or TP), one or a group of base stations (including multiple antenna panels) in a 5G system, or may also be a network Node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a Distributed Unit (DU), etc.

In some deployments, the gNB may include a Centralized Unit (CU) and DUs. The gNB may also include an active antenna unit (active antenna unit, AAU). The CUs implement part of the functionality of the gNB, the DUs implement part of the functionality of the gNB, e.g., the CUs may be responsible for handling non-real time protocols and services, e.g., may implement the functionality of a radio resource control (radio resource control, RRC) layer, a traffic data adaptation protocol (service data adaptation protocol, SDAP) layer, and/or a packet data convergence layer protocol (packet data convergence protocol, PDCP) layer. The DU may be responsible for handling physical layer protocols and real-time services. For example, functions of a radio link control (radio link control, RLC), medium access control (media access control, MAC) and Physical (PHY) layers may be implemented. One DU may be connected to only one CU or to a plurality of CUs, and one CU may be connected to a plurality of DUs, between which communication may be performed through an F1 interface. The AAU may implement part of the physical layer processing functions, radio frequency processing, and active antenna related functions. Under this architecture, higher layer signaling, such as RRC layer signaling, may also be considered to be transmitted by DUs or by dus+aaus, since the information of the RRC layer is eventually submitted to the PHY layer to become information of the PHY layer, or is converted from information of the PHY layer.

It is understood that the network device may be a device comprising one or more of a CU node, a DU node, an AAU node. In addition, the CU may be divided into network devices in an access network (radio access network, RAN), or may be divided into network devices in a Core Network (CN), which is not limited in this application.

The network device provides services for the cell, and the terminal device communicates with the cell through transmission resources (e.g., frequency domain resources, or spectrum resources) allocated by the network device, where the cell may belong to a macro base station (e.g., macro eNB or macro gNB, etc.), or may belong to a base station corresponding to a small cell (small cell), where the small cell may include: urban cells (metro cells), micro cells (micro cells), pico cells (pico cells), femto cells (femto cells) and the like, and the small cells have the characteristics of small coverage area, low transmitting power and the like and are suitable for providing high-rate data transmission services.

To facilitate an understanding of the embodiments of the present application, the following description is made.

In the present embodiments, the terms "system" and "network" are often used interchangeably herein. The term "and/or" is merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The terminology used in the description section of the present application is for the purpose of describing particular embodiments of the present application only and is not intended to be limiting of the present application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims of this application and in the drawings, are used for distinguishing between different objects and not for describing a particular sequential order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The "indication" in the embodiment of the present application may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the embodiment of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, etc.

In the embodiment of the present application, the "pre-defining" or "pre-configuring" may be implemented by pre-storing a corresponding code, a table or other manners that may be used to indicate relevant information in a device (including, for example, a terminal device and a network device), and the specific implementation manner is not limited in this application. Such as predefined may refer to what is defined in the protocol.

In this embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in this application.

In order to facilitate understanding of the embodiments of the present application, first, application scenarios of the embodiments of the present application will be described.

Fig. 1 is a schematic diagram of an application scenario provided in an embodiment of the present application. The scenario shown in fig. 1 comprises one network device 101 and two terminal devices, terminal devices 102 and 103, respectively, the terminal device 102 and the terminal device 103 being both within the coverage area of the network device 101. The network device 101 is communicatively connected to the terminal device 102 and the terminal device 103, respectively, and the terminal device 102 is communicatively connected to the terminal device 103. Illustratively, the terminal device 102 may send the communication message to the terminal device 103 through the network device 101, and the terminal device 102 may also send the communication message directly to the terminal device 103. The link between the terminal device 102 and the terminal device 103 is referred to as a D2D link, and may also be referred to as a proximity services (proximity service, proSe) link, a side link, or the like. The transmission resources on the D2D link may be allocated by the network device.

Fig. 2 is a second application scenario schematic diagram provided in the embodiment of the present application. The scenario shown in fig. 2 likewise comprises one network device 101 with two terminal devices, unlike fig. 1, terminal device 103 being within the coverage of network device 101 and terminal device 104 being outside the coverage of network device 101. The network device 101 is communicatively connected to the terminal device 103, and the terminal device 103 is communicatively connected to the terminal device 104. For example, the terminal device 103 may receive the configuration information sent by the network device 101, and perform side communication according to the configuration information. Since the terminal device 104 cannot receive the configuration information sent by the network device 101, the terminal device 104 can perform the sidestream communication according to the preconfigured information and the information carried in the sidestream broadcast channel (Physical Sidelink Broadcast Channel, PSBCH) sent by the terminal device 103.

Fig. 3 is a third application scenario schematic diagram provided in the embodiment of the present application. In the scenario shown in fig. 3, both the terminal device 104 and the terminal device 105 are outside the coverage of the network device 101. Both the terminal device 104 and the terminal device 105 can determine the sidestream configuration according to the preconfiguration information to perform sidestream communication.

Fig. 4 is a schematic diagram of an application scenario provided in the embodiment of the present application. In the scenario shown in fig. 4, a plurality of terminal apparatuses constitute one communication group, for example, terminal apparatuses 106, 107, and 108 constitute one communication group. Within the communication group there is a central control node, also referred to as a cluster head terminal (CH), e.g. terminal device 106. Wherein the central control node has one of the following functions: is responsible for the establishment of a communication group; joining and leaving of group members; performing resource coordination, distributing side transmission resources for other terminals, and receiving side feedback information of other terminals; and performing resource coordination and other functions with other communication groups.

It should be noted that, the system architecture and the application scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation to the technical solution provided in the embodiments of the present application, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of the new service scenario, the technical solution provided in the embodiments of the present application is also applicable to similar problems.

Unlike conventional cellular systems in which communication data is received or transmitted through a base station, D2D communication has higher frequency efficiency and lower transmission delay. The internet of vehicles system adopts a terminal-to-terminal direct communication mode, and two transmission modes are defined in the third generation partnership project (3rd Generation Partnership Project,3GPP): a first transmission mode and a second transmission mode.

First transmission mode: the transmission resources of the terminal equipment are allocated by the base station, and the terminal equipment performs data transmission on the side link according to the resources allocated by the base station. The base station may allocate resources for single transmission to the terminal device, or may allocate resources for semi-static transmission to the terminal device.

Illustratively, the terminal device 102 shown in fig. 1 is located within the coverage area of the network device 101, and the network device 101 allocates transmission resources used for side transmission to the terminal device 102.

Second transmission mode: the terminal equipment selects one resource from the resource pool to transmit data.

For example, the terminal device 102 shown in fig. 1 may autonomously select transmission resources from a resource pool configured by a network to perform side transmission. The terminal devices 104 and 105 shown in fig. 3 are both located outside the coverage area of the network device 101, and the terminal devices 104 and 105 may autonomously select transmission resources from a preconfigured resource pool to perform side transmission.

NR-V2X is a communication scenario based on side-links, in NR-V2X communication, X may refer broadly to any device having wireless receiving and transmitting capabilities, including but not limited to a slow moving wireless device, a fast moving vehicle device, a network control node having wireless transmitting and receiving capabilities, etc. NR-V2X communication supports unicast, multicast and broadcast transmission modes. For unicast transmission, the transmitting terminal transmits data, and there is only one receiving terminal. For multicast transmission, a transmitting terminal transmits data, and a receiving terminal is all terminals in one communication group or all terminals within a certain transmission distance. For broadcast transmission, a transmitting terminal transmits data, and a receiving terminal is any one of terminals around the transmitting terminal.

NR-V2X communication needs to support autopilot, and thus places higher demands on data interaction between vehicles, such as higher throughput, lower latency, higher reliability, greater coverage, more flexible resource allocation, etc. To improve the reliability of the communication, a physical sidelink feedback channel (physical sidelink deedback channel, PSFCH) is introduced in NR-V2X.

For unicast transmission, a transmitting terminal transmits side line data (including PSCCH and PSSCH) to a receiving terminal, the receiving terminal transmits feedback information of a hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) to the transmitting terminal, and the transmitting terminal determines whether data retransmission is required according to the feedback information of the receiving terminal. Wherein, the feedback information of the HARQ is carried in the PSFCH.

For multicast transmission, two modes of sidestream feedback are supported: mode 1: a terminal in a certain distance range receives sidestream data of a sending terminal, and if the detection result is NACK, sidestream feedback is required to be sent; if the detection result is ACK, no side feedback needs to be sent. Terminals outside this distance range do not need to send side feedback no matter what the detection result is. Mode 2: for a communication group, all receiving terminals need to send side feedback. For example, one communication group includes P terminals, and when one terminal transmits side line data as a transmitting terminal, other P-1 terminals all need transmitting side line feedback information.

The terminal device may activate or deactivate the sidestream feedback via the pre-configuration information or the network configuration information. If the sidestream feedback is activated, the receiving terminal receives sidestream data sent by the sending terminal, and needs to feed back HARQ ACK/NACK (acknowledgement/non-acknowledgement) to the sending terminal according to the detection result, and the sending terminal decides to send retransmission data or new data according to the feedback information of the receiving terminal. If the sidestream feedback is deactivated, the receiving terminal does not need to send feedback information, and the sending terminal generally sends the data in a blind retransmission mode, for example, the sending terminal repeatedly sends preset retransmission times for each sidestream data.

Currently, in NR-V2X communication, the PSFCH only carries 1 bit of HARQ ACK information, occupies 2 time domain symbols in the time domain (where the second symbol carries side row feedback information, and the data on the first symbol is a copy of the data on the second symbol), and occupies 1 PRB in the frequency domain.

The slot structure in NR-V2X communication is described below.

Fig. 5 is a schematic diagram of a timeslot structure according to an embodiment of the present application. The time slot shown in fig. 5 does not include the symbols of the PSFCH, the first side row symbol of the time slot is typically used for automatic gain control (Automatic Gain Control, AGC) where the terminal device replicates the data sent on the second symbol, and the data on the AGC symbol is typically not used for data demodulation. The last sidelink symbol of the slot is a Guard Period (GP) for a transceiving transition for the terminal device to transition from a transmitting (or receiving) state to a receiving (or transmitting) state. In the remaining sidelink symbols of the slot, the physical sidelink control channel (physical sidelink control channel, PSCCH) may occupy two or three OFDM symbols starting from the second sidelink symbol, and the PSCCH may occupy {10,12,15,20,25 } physical resource blocks (physical resource block, PRB) in the frequency domain. In order to reduce the complexity of blind detection of the PSCCH by the terminal device, only one PSCCH symbol number and PRB number are allowed to be configured in one resource pool. In addition, because the sub-channel is the minimum granularity of the physical sidelink shared channel (physical sidelink shared channel, PSSCH) resource allocation in NR-V2X, the number of PRBs occupied by the PSCCH must be less than or equal to the number of PRBs contained in one sub-channel in the resource pool, so as not to cause additional restrictions on PSSCH resource selection or allocation. The physical sidelink shared channel PSSCH may occupy a symbol starting from the second sidelink symbol of the slot until before the last GP symbol of the slot. The PSSCH occupies K subchannels in the frequency domain, each comprising M consecutive PRBs. Where K is a positive integer, and the value of M includes {10,12,15,20,25,50,75,100}.

Fig. 6 is a schematic diagram of a timeslot structure according to an embodiment of the present application. In the slot structure shown in fig. 6, the last symbol is used as GP, the second last symbol is used for PSFCH transmission, the third last symbol is the same as the data of the PSFCH symbol, used as AGC, the fourth last symbol is also used as GP, the first symbol in the slot is used as AGC, the data on this symbol is the same as the data on the second time domain symbol in the slot, PSCCH occupies 3 time domain symbols, and the remaining symbols are available for PSSCH transmission.

To reduce the overhead of the PSFCH channel, a period of the sidelink feedback resource may be defined, for example, the period is N slots, where N is 1, 2, 4, etc., and the parameter N may be preconfigured or network configured.

Fig. 7 is a schematic diagram of a PSFCH resource provided in an embodiment of the present application. As shown in fig. 7, the PSFCH has a period of 4 slots. Wherein the PSSCH transmitted in slots 2, 3, 4, 5 is transmitted in slot 7 for its feedback information, so slots 2, 3, 4, 5 can be considered as a set of slots in which the PSSCH transmitted in the set of slots is in the same slot (slot 7) as its corresponding PSFCH.

It should be noted that the NR-V2X communication support terminal transmits a plurality of PSFCHs simultaneously in one slot.

A brief description of a multi-beam system of a communication system follows.

Design goals for NR/5G systems include large bandwidth communications in the high frequency band (e.g., the frequency band above 6 GHz). As the operating frequency becomes higher, the path loss during transmission increases, thereby affecting the coverage capability of the high frequency system. In order to effectively ensure the coverage of the high-frequency range NR system, a large-scale antenna array (massive MIMO) can be adopted to form a shaped beam with larger gain, overcome propagation loss and ensure the coverage of the system.

The millimeter wave antenna array has shorter wavelength, smaller antenna array interval and aperture, and can integrate more physical antenna arrays into a two-dimensional antenna array with limited size. Meanwhile, due to the fact that the millimeter wave antenna array is limited in size, a digital wave beam forming mode cannot be adopted in consideration of factors such as hardware complexity, cost overhead and power consumption, an analog wave beam forming mode is generally adopted, network coverage is enhanced, and meanwhile the implementation complexity of equipment can be reduced.

In existing 2/3/4G typical systems, one cell (sector) uses one wider beam (beam) to cover the entire cell. So that at each instant, terminals within the coverage of the cell have the opportunity to acquire the transmission resources allocated by the system.

The NR/5G multi-beam system covers the whole cell by different beams, i.e. each beam covers a smaller range, the effect of multiple beams covering the whole cell is achieved by beam scanning (beam scanning).

Fig. 8 is a schematic diagram of a system without beamforming. The system shown in fig. 8 is a conventional LTE/NR system that does not use beamforming. The network side of the LTE/NR system uses one wide beam to cover the entire cell, and the UE1 to UE5 can receive network signals at any time.

Fig. 9 is a schematic diagram of a system using beamforming. The system shown in fig. 9 is an NR system using beamforming, the network side of which uses narrower beams, e.g. beams 1 to 4 in fig. 9, to cover different areas in a cell at different times using different beams. For example, at time 1, the nr network side covers the area where UE1 is located by beam 1; at time 2, the NR network side covers the area where the UE2 is located through the beam 2; at time 3, the NR network side covers the areas where the UE3 and the UE4 are located through the wave beam 3; at time 4, the nr network side covers the area where the UE5 is located by the beam 4.

In fig. 9, since the network uses narrower beams, the transmitted energy can be more concentrated and thus can cover greater distances; also, because the beams are narrow, each beam can only cover a partial area in the cell, so analog beamforming is "space-time".

Analog beamforming can be used not only for network side devices but also for terminals as well. Meanwhile, analog beamforming may be used not only for transmission of signals (referred to as a transmission beam) but also for reception of signals (referred to as a reception beam).

Currently, a beam may be identified by the signal it carries. For example, different synchronization signal broadcast channel blocks (SSBs) are transmitted on different beams, and the terminal can identify the different beams through the different SSBs. As another example, different channel state information reference signals (channel state information reference signal, CSI-RS) are transmitted on different beams, and the terminal identifies the different beams by CSI-RS signals or CSI-RS resources. Accordingly, the beam may be identified based on the visible signal later, and in fact the beam corresponds to a certain signal.

In a multi-beam system, a physical downlink control channel (physical downlink control channel, PDCCH) and a physical downlink shared channel (physical downlink shared channel, PDSCH) may be transmitted by different downlink transmit beams.

For the system below 6G, the terminal side generally has no analog beam, so an omni-directional antenna (or a near omni-directional antenna) is used to receive signals sent by different downlink transmission beams of the base station.

For millimeter wave systems, there may be an analog beam at the terminal side, and a corresponding downlink receiving beam needs to be used to receive a signal sent by a corresponding downlink sending beam. At this time, corresponding beam indication information (beam indication) is needed to assist the UE in determining the transmit beam related information of the network side or the receive beam related information corresponding to the terminal side.

In the NR protocol, the beam indication information does not directly indicate the beam itself, but is indicated by Quasi Co-Location (QCL) between signals (type 'QCL-type'). On the terminal side, the determination of the reception of the corresponding channel/signal is also based on QCL quasi co-sited hypotheses.

In order to improve the reception performance when the terminal receives a signal, the terminal may improve the reception algorithm by using the characteristics of the transmission environment corresponding to the data transmission. For example, the statistical properties of the channel may be utilized to optimize the design and parameters of the channel estimator. In the NR system, these characteristics corresponding to data transmission are represented by QCL state (QCL-Info).

Downlink transmission if the downlink transmission is from different transmission receiving points (transmission reception point, TRP)/antenna array block (panel)/beam (beam), the characteristics of the transmission environment corresponding to the data transmission may also change, so in the NR system, the network side transmits the downlink control channel or the data channel, and indicates the corresponding QCL state information to the terminal through the transmission configuration indication (transmission configuration indicator, TCI) state.

One TCI state may include the following configuration:

a TCI status Identifier (ID) for identifying a TCI status; QCL information 1; QCL information 2 (optional).

Wherein, one QCL information further comprises the following information:

the QCL type configuration may be one of QCL type a, QCL type b, QCL type c, or QCL type d; the QCL reference signal configuration includes a cell ID, a BWP ID, and an identity (which may be a CSI-RS resource ID or an SSB index) of the reference signal.

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, typeC, and the QCL type of the other QCL information (if configured) must be QCL type D.

Wherein, the definition of different QCL type configurations is as follows:

'QCL-TypeA': doppler shift, doppler spread, average delay, delay spread };

'QCL-TypeB': doppler shift, doppler spread;

'QCL-TypeC': doppler shift, average delay };

'QCL-TypeD': spatial receiver parameters Spatial Rx parameter }.

In an NR system, the network side may indicate a corresponding TCI state for a downlink signal or a downlink channel.

If the network side configures the QCL reference signal of the target downlink channel or the target downlink signal to be the reference SSB or the reference CSI-RS resource through the TCI state and the QCL type is configured to be typeA, typeB or typeC, the terminal may assume that the large-scale parameters of the target downlink signal and the reference SSB or the reference CSI-RS resource are the same, and the large-scale parameters are determined through QCL type configuration. The large scale parameters include doppler shift, doppler spread, average delay, delay spread, spatial receiver parameters, average gain, etc. as described above.

If the network side configures the QCL reference signal of the target downlink channel or downlink signal to be the reference SSB or the reference CSI-RS resource through the TCI state and the QCL type is configured to be typeD, the terminal may receive the target downlink signal using the same reception beam (i.e., spatial Rx parameter) as that used for receiving the reference SSB or the reference CSI-RS resource. In general, the target downlink channel (or downlink signal) and its reference SSB or reference CSI-RS resource are transmitted 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 the two downlink signals or downlink channels are different, different TCI states are typically configured.

For the downlink control channel, the TCI state of the corresponding control-resource set (CORESET) may be indicated by RRC signaling, or by means of RRC signaling+mac signaling.

For the downlink data channel, the available set of TCI states is indicated by RRC signaling, part of the TCI states are activated by MAC layer signaling, and finally one or two TCI states are indicated from the activated TCI states by a TCI state indication field in the downlink control information (downlink control information, DCI) for PDSCH for DCI scheduling.

Based on the above multi-beam system, in order to increase the transmission rate of the sidestream communication system, it is considered to use the millimeter wave band in the sidestream communication system. In the sidestream millimeter wave communication system, how to determine the sidestream transmission beam of the terminal device is a problem to be solved at present, for example how to determine the beam of the sidestream channel (including PSFCH, PSCCH, PSBCH or PSSCH) sent by the terminal device, and how to determine the beam of the sidestream channel received by the terminal device.

The embodiment of the application provides an information transmission method which can be used for solving the problem of how a terminal device transmits a sidestream channel in sidestream communication. Since the sidestream communication introduces multi-beam transmission and reception, the terminal device needs to determine an appropriate beam when transmitting the sidestream channel, so as to improve the transmission quality of the sidestream communication. The whole thought of the technical scheme is as follows:

For how the terminal device transmits the sidelink channel, the beam of the transmitting sidelink channel may be determined by any of the following means:

1) And determining the beam of the current side channel transmitted by the terminal equipment according to the side channel receiving beam used by the terminal equipment.

2) And determining the beam of the current side channel transmitted by the terminal equipment according to the side channel transmitted beam used by the terminal equipment.

3) And determining the beam of the current side channel to be sent according to the indication information reported to the opposite side equipment by the terminal equipment.

4) And determining the beam of the current side channel transmitted by the opposite side equipment according to the indication information of the opposite side equipment of the terminal equipment.

The sidelink channels described above include PSFCH, PSCCH, PSBCH or PSSCH.

Taking the example that the terminal device UE1 transmits the PSFCH to the UE2, the UE1 may determine the beam for transmitting the PSFCH by any of the following means:

1) It is determined how UE1 receives the first PSCCH/PSSCH from UE2 (i.e., it is determined that UE1 has used the receive beam to receive the first PSCCH/PSSCH), and thus determines the beam in which UE1 transmits the PSFCH to UE 2. Wherein the PSFCH is a side-row feedback channel associated with the first PSCCH/PSSCH for which the side-row feedback information carried in the PSFCH is intended.

2) Determining how the second PSCCH/PSSCH that UE1 transmits to UE2 (i.e., determining the transmit beam used by UE1 to transmit the second PSCCH/PSSCH), and thus determining the beam in which UE1 transmits the PSFCH to UE 2.

3) And determining the beam of the PSFCH sent by the UE1 according to the indication information reported to the opposite side equipment UE2 by the UE 1. The indication information indicates a certain reference signal, the UE1 obtains an optimal receiving beam of the UE1 corresponding to the reference signal according to the indication information, and the beam of the PSFCH sent by the UE1 to the UE2 is determined according to the optimal receiving beam.

4) From receiving the indication information from UE2, it is determined that UE1 transmits the beam of the PSFCH to UE 2. The indication information indicates a certain reference signal, and the UE1 knows a reception beam used when receiving the reference signal according to the indication information, and determines a beam for transmitting the PSFCH according to the reception beam.

For how a terminal device receives a sidelink channel, the beam of the receiving sidelink channel may be determined by any of the following means:

1) And determining the beam for receiving the current side channel according to the side channel transmitting beam used by the terminal equipment.

2) And determining the beam for receiving the current side channel according to the side channel receiving beam used by the terminal equipment.

3) And determining the beam for receiving the current side channel according to the indication information of the opposite side equipment of the terminal equipment.

4) And determining the beam for receiving the current side channel according to the indication information sent to the opposite side equipment by the terminal equipment.

The sidelink channels described above include PSFCH, PSCCH, PSBCH or PSSCH.

Taking the example of terminal equipment UE2 receiving the PSFCH from UE1, UE2 may determine the beam on which to receive the PSFCH by either:

1) It is determined how UE2 transmits the first PSCCH/PSSCH to UE1 (i.e., determines the transmit beam of the first PSCCH/PSSCH used by UE 2), thereby determining the beam to receive the PSFCH from UE 1. Wherein the PSFCH is a side-row feedback channel associated with the first PSCCH/PSSCH for which the side-row feedback information carried in the PSFCH is intended.

2) It is determined how UE2 receives the second PSCCH/PSSCH from UE1 (i.e., it is determined that UE2 has used the receive beam to receive the second PSCCH/PSSCH) to determine the beam to receive the PSFCH from UE 1.

3) The beam receiving the PSFCH from UE1 is determined according to the indication information received from UE 1. The indication information indicates a certain reference signal, the UE2 knows that the transmission beam corresponding to the reference signal is the optimal transmission beam for the UE1 according to the indication information, and determines that the UE2 receives the beam of the PSFCH from the UE1 according to the optimal transmission beam.

4) According to the indication information sent to UE1 by UE2, it is determined that UE2 receives the beam of the PSFCH from UE 1. The indication information indicates a certain reference signal, and the UE2 knows a transmission beam used when transmitting the reference signal according to the indication information, and determines a beam for receiving the PSFCH according to the transmission beam.

Before the technical scheme of the application is introduced, a process of how the terminal equipment determines the optimal sending beam and the optimal receiving beam in the sidestream communication is described first.

Fig. 10 is a schematic diagram of determining an optimal transmit beam by a transmitting UE according to an embodiment of the present application. As shown in fig. 10, the optimal transmit beam of the transmitting UE is generally determined as follows:

the transmitting UE transmits CSI-RS resources in turn using different beams (e.g., beam 0 to beam 3 of the transmitting UE in fig. 10). The receiving end UE uses the same receiving beam (e.g. beam 2 of the receiving end in fig. 10) to respectively receive multiple CSI-RS resources sent by the transmitting end UE, and measures the detected CSI-RS resources, selects an optimal CSI-RS resource, and feeds back the corresponding resource information (e.g. CSI-RS resource index) to the transmitting end UE, where the transmitting beam corresponding to the optimal CSI-RS resource is the transmitting beam optimal for the receiving end UE.

Optionally, the receiving end UE reports or feeds back N CSI-RS resource information and corresponding measurement results to the transmitting end UE, and the transmitting end UE selects one CSI-RS from the N CSI-RS resources, and performs side transmission by using a transmission beam corresponding to the selected CSI-RS.

Fig. 11 is a schematic diagram of determining an optimal receiving beam by a receiving end UE according to an embodiment of the present application. As shown in fig. 11, the optimal transmit beam of the receiving UE is generally determined as follows:

The transmitting UE transmits CSI-RS resources using the same beam (e.g., beam 2 of the transmitting in fig. 11). Optionally, the transmitting UE transmits CSI-RS resources using a transmit beam optimal for the receiving UE. The receiving end UE receives the CSI-RS resource transmitted by the transmitting end UE by using different receiving beams (for example, beam 0 to beam 3 of the receiving end in fig. 11) in turn, and performs measurement, and selects the receiving beam with the optimal measurement result as the optimal receiving beam of the receiving end UE. When the transmitting end UE performs side transmission by using the optimal transmission beam, the receiving end UE may perform corresponding reception by using an optimal reception beam corresponding to the optimal transmission beam. The receiving beam with the optimal measurement result is the receiving beam with the best reference signal receiving quality.

Alternatively, the transmitting UE may determine the optimal receiving beam corresponding to each transmitting beam by adopting the above procedure for different transmitting beams, respectively. Therefore, when the transmitting end UE performs side-line transmission, the transmitting end UE may instruct the transmitting beam used for side-line transmission, and the receiving end UE may determine an optimal receiving beam corresponding to the transmitting beam used by the transmitting end, and perform side-line reception by using the optimal receiving beam.

For two terminal apparatuses UE1 and UE2 performing side-link communication, when UE1 transmits PSCCH/PSSCH to UE2 (or when UE2 transmits PSCCH/PSSCH to UE 1), an optimal transmit beam of UE1 and an optimal receive beam of UE2 (or an optimal transmit beam of UE2 and an optimal receive beam of UE 1) may be determined, respectively, based on the above-described procedure.

The technical scheme provided by the embodiment of the application is described in detail through specific embodiments. It should be noted that, the technical solution provided in the embodiments of the present application may include some or all of the following, and the following specific embodiments may be combined with each other, and the same or similar concepts or processes may not be described in some embodiments.

The spatial transmit filter (spatial domain transmission filter) of the present embodiment is a transmit beam, and the spatial receive filter (spatial domain receive filter) is a receive beam.

In the following, referring to fig. 12 and fig. 13, first, from the perspective of the first device and the second device of the sidestream communication system, several application scenarios of the technical solution provided in the embodiment of the present application are described. Wherein the first device communicates directly with the second device. The first device corresponds to UE1 above and the second device corresponds to UE2 above.

Fig. 12 is an interaction diagram of an information transmission method according to an embodiment of the present application. As shown in fig. 12, the information transmission method provided in this embodiment is applied to a first device of a sidestream communication system, and includes the following steps:

step 201, the first device determines a first spatial domain transmission filter for sidestream communication.

Step 202, the first device uses a first spatial transmit filter to transmit a first side channel to the second device.

In an alternative embodiment of the present embodiment, the first device determines a first spatial transmit filter for the first device to transmit the first side channel to the second device based on a spatial receive filter used by the first device when receiving the second side channel from the second device. The embodiment comprises the following two application scenarios:

in an application scenario, the first side channel comprises a first PSFCH and the second side channel comprises a first PSCCH or a first PSSCH. Based on the scenario, the first device determines a first spatial transmit filter for the first device to transmit a first PSFCH to the second device based on a spatial receive filter used by the first device when the first device receives a first PSCCH or a first PSSCH from the second device.

Optionally, the first PSFCH is a side feedback channel associated with the first PSCCH or first PSSCH, i.e. the side feedback information carried in the first PSFCH is for the first PSCCH or first PSSCH.

In an application scenario, the first sidelink channel includes a second PSCCH or a second PSSCH, and the second sidelink channel includes a second PSFCH. Based on the scenario, the first device determines a first spatial transmit filter for the first device to transmit a second PSCCH or a second PSSCH to the second device based on a spatial receive filter used by the first device when receiving a second PSFCH from the second device.

Optionally, the second PSCCH or second PSSCH is a sidelink channel associated with a second PSFCH. For example, the second PSCCH or second PSSCH may be a retransmission for the second PSFCH, i.e., the second PSFCH carries a NACK, which is a retransmission by the first device according to the second PSFCH from the second device.

In some embodiments, the first device uses a spatial receive filter as the first spatial transmit filter when receiving the second side channel from the second device.

In an alternative embodiment of the present embodiment, the first device determines, according to the second spatial domain transmission filter, a first spatial domain transmission filter for the first device to transmit the first side channel to the second device. Wherein the second spatial transmit filter is a spatial transmit filter used by the first device when transmitting the third side channel to the second device. The embodiment comprises the following two application scenarios:

In an application scenario, the first side channel includes a third PSFCH, and the third side channel includes a third PSCCH or a third PSSCH. Based on the scenario, the first device determines a first spatial transmit filter for the first device to transmit a third PSFCH to the second device based on a spatial transmit filter used when the first device transmits a third PSCCH or a third PSSCH to the second device.

In an application scenario, the first sidelink channel includes a fourth PSCCH or a fourth PSSCH, and the third sidelink channel includes a fourth PSFCH. Based on the scenario, the first device determines a first spatial transmit filter for the first device to transmit a fourth PSCCH or a fourth PSSCH to the second device according to a spatial transmit filter used by the first device to transmit the fourth PSFCH to the second device.

In some embodiments, the first device uses a spatial transmit filter used when the first device transmits the third side channel to the second device as the first spatial transmit filter.

In an optional embodiment of this embodiment, the first device determines, according to the first reference signal resource indication information reported to the second device by the first device, a first spatial domain transmission filter for the first device to transmit the first side channel to the second device.

In some embodiments, the first reference signal resource indicator information is used by the second device to determine a spatial transmit filter.

For example, in determining an optimal transmit beam for the second device, the second device transmits multiple CSI-RSs to the first device through different spatial transmit filters. The first device receives the CSI-RS sent by the second device by using the same beam (e.g., the first receiving beam), selects the CSI-RS with the optimal measurement result according to the measurement result of the received CSI-RS, and reports the CSI-RS to the second device, for example, the first device reports CSI-RS resource indication information (CSI-RS resource indicator, CRI) to the second device, that is, the first reference signal resource indication information. The second device determines that a transmission beam associated with the CSI-RS corresponding to the CRI is an optimal transmission beam according to the CRI, and the first device determines that a first reception beam for receiving the CSI-RS corresponding to the CRI is an optimal reception beam corresponding to the optimal transmission beam. Thus, the first device, upon determining a first spatial transmit filter to transmit a first side channel to the second device, may determine the first spatial transmit filter based on the first receive beam. In some embodiments, the first device uses the first receive beam as a first spatial transmit filter.

In some embodiments, the first reference signal resource indication information is carried in the side control information SCI, the medium access layer control unit MAC CE, the PC5 radio resource control RRC signaling or the PSFCH. The first sidelink channel includes PSFCH, PSCCH, PSBCH or PSSCH.

In some embodiments, the first device uses a spatial reception filter corresponding to the reference signal resource indicated by the first reference signal resource indication information as the first spatial transmission filter.

In an alternative embodiment of the present embodiment, the first device determines, according to the second reference signal resource indication information from the second device, a first spatial domain transmission filter for the first device to transmit the first side channel to the second device.

In some embodiments, the second reference signal resource indicator information is used by the first device to determine a spatial receive filter.

For example, after the second device selects the optimal transmission beam, the second device sends a TCI status indication to the first device, where the TCI status indication is used to indicate the spatial domain receiver parameter of the first device, and reference signal information included in the TCI status is the second reference signal resource indication information. The second reference signal resource indication information is used, for example, to indicate CSI-RS resources. The first device may determine an optimal spatial reception filter associated with the CSI-RS according to the TCI status indication, and determine a first spatial transmission filter for the first device to transmit a first side channel to the second device according to the optimal spatial reception filter.

In some embodiments, the first device uses the optimal spatial reception filter as the first spatial transmission filter.

In some embodiments, the second reference signal resource indication information is carried in the TCI state.

In some embodiments, the second reference signal resource indication information is carried in SCI, MAC CE, PC5-RRC signaling, or PSFCH. The first sidelink channel includes PSFCH, PSCCH, PSBCH or PSSCH.

In some embodiments, the first device uses a spatial reception filter corresponding to the reference signal resource indicated by the second reference signal resource indication information as the first spatial transmission filter.

The embodiment shows an information transmission method, where a first device may determine, through a spatial receiving filter of a first device receiving a side-going channel, or a spatial transmitting filter of a first device transmitting a side-going channel, or first reference signal resource indication information reported by the first device to a second device, or second reference signal resource indication information from the second device, that the first device transmits a current spatial transmitting filter of the side-going channel. By any method, the airspace transmitting filter of the first equipment can be determined, so that the transmitting capacity of the first equipment side communication is improved.

Fig. 13 is a second interaction diagram of the information transmission method according to the embodiment of the present application. As shown in fig. 13, the information transmission method provided in this embodiment is applied to a second device of a sidestream communication system, and includes the following steps:

step 301, the second device determines a first spatial domain receive filter for sidestream communication.

Step 302, the second device receives, by using a first spatial receiving filter, a first side channel sent by the first device.

In an alternative embodiment of the present embodiment, the second device determines, according to a spatial transmit filter used when the second device transmits the second sidelink channel to the first device, a first spatial receive filter of the first sidelink channel transmitted by the first device by the second device. The embodiment comprises the following two application scenarios:

in an application scenario, the first side channel comprises a first PSFCH and the second side channel comprises a first PSCCH or a first PSSCH. Based on the scenario, the second device determines a first spatial reception filter of the first PSFCH transmitted by the second device, according to a spatial transmission filter used when the second device transmits the first PSCCH or the first PSSCH to the first device.

In an application scenario, the first sidelink channel includes a second PSCCH or a second PSSCH, and the second sidelink channel includes a second PSFCH. Based on the scenario, the second device determines a first spatial reception filter for the second device to receive a second PSCCH or a second PSSCH transmitted by the first device according to a spatial transmission filter used by the second device to transmit the second PSFCH to the first device.

In some embodiments, the second device uses a spatial transmit filter used when the second device transmits the second sidelink channel to the first device as the first spatial receive filter.

In an alternative embodiment of the present embodiment, the second device determines, according to the second spatial domain receiving filter, a first spatial domain receiving filter of the first lateral channel transmitted by the first device. Wherein the second spatial reception filter is a spatial reception filter used when the second device receives the third side channel from the first device. The embodiment comprises the following two application scenarios:

In an application scenario, the first side channel includes a third PSFCH, and the third side channel includes a third PSCCH or a third PSSCH. Based on the scenario, the second device determines a first spatial reception filter of a third PSFCH transmitted by the first device from a spatial reception filter used by the second device when the second device receives the third PSCCH or the third PSSCH from the first device.

In an application scenario, the first sidelink channel includes a fourth PSCCH or a fourth PSSCH, and the third sidelink channel includes a fourth PSFCH. Based on the scenario, the second device determines a first spatial reception filter for the second device to receive a fourth PSCCH or a fourth PSSCH transmitted by the first device, based on a spatial reception filter used by the second device to receive a fourth PSFCH from the first device.

In some embodiments, the second device uses as the first spatial reception filter a spatial reception filter that it uses when receiving the third side channel from the first device.

In an alternative embodiment of the present embodiment, the second device determines, according to the first reference signal resource indication information from the first device, a first spatial domain receiving filter for the second device to receive the first side channel sent by the first device. The first reference signal resource indication information is used to indicate a first target reference signal resource.

For example, in determining an optimal transmit beam for the second device, the second device transmits multiple CSI-RSs to the first device through different spatial transmit filters. The first device receives the CSI-RS sent by the second device by using the same beam (e.g., the first receiving beam), selects the CSI-RS with the optimal measurement result according to the measurement result of the received CSI-RS, and reports the CSI-RS to the second device, for example, the first device reports CSI-RS resource indication information (CSI-RS resource indicator, CRI) to the second device, that is, the first reference signal resource indication information. The second device determines that a transmission beam associated with the CSI-RS corresponding to the CRI is an optimal transmission beam according to the CRI, and determines a first airspace receiving filter of a first lateral channel from the first device according to the optimal transmission beam. In some embodiments, the second device treats the optimal transmit beam as a first spatial receive filter.

In some embodiments, the first reference signal resource indication information is carried in SCI, MAC CE, PC5-RRC signaling, or PSFCH. The first sidelink channel includes PSFCH, PSCCH, PSBCH or PSSCH.

In some embodiments, the second device uses a spatial domain transmission filter corresponding to the reference signal resource indicated by the first reference signal resource indication information as the first spatial domain reception filter.

In an optional embodiment of this embodiment, the second device determines, according to the second reference signal resource indication information, a first spatial domain receive filter for the second device to receive the first side channel sent by the first device. Wherein the second reference signal resource indication information is used to indicate a second target reference signal resource.

In some embodiments, the second device sends a TCI state to the first device, the TCI state including the second reference signal resource indication information therein.

For example, after the second device selects the optimal transmission beam, the second device sends a TCI status indication to the first device, where the TCI status indication is used to indicate the spatial domain receiver parameter of the first device, and the reference signal information included in the TCI status is the second reference signal resource indication information. The second reference signal resource indication information is used, for example, to indicate CSI-RS resources. The first device may determine an optimal spatial receive filter associated with the CSI-RS based on the TCI state indication. The transmission beam corresponding to the reference signal indicated by the TCI state is the optimal transmission beam of the second device, and the second device determines a first spatial domain receiving filter for the second device to receive the first lateral channel transmitted by the first device according to the optimal transmission beam. In some embodiments, the second device treats the optimal transmit beam as a first spatial receive filter.

In this embodiment, the second reference signal resource indicator information is carried in SCI, MAC CE, PC5-RRC signaling or PSFCH. The first sidelink channel includes PSFCH, PSCCH, PSBCH or PSSCH.

In some embodiments, the second device uses a spatial domain transmission filter corresponding to the reference signal resource indicated by the second reference signal resource indication information as the first spatial domain reception filter.

The embodiment shows an information transmission method, where the second device may determine, through a spatial transmit filter of a second device transmitting a side channel, or a spatial receive filter of a second device receiving a side channel, or first reference signal resource indication information from the first device, or second reference signal resource indication information sent by the second device to the first device, a spatial receive filter of a current side channel received by the second device. By any method, the airspace receiving filter of the second equipment can be determined, so that the receiving capability of the second equipment side communication is improved.

Based on one of the application scenarios of the above embodiments: in this scenario, the second device sends a second sidelink channel to the first device, the first device sends a first sidelink channel to the second device, the first sidelink channel comprising a first PSFCH, the second sidelink channel comprising a first PSCCH or a first PSSCH, the first PSFCH being a sidelink feedback channel associated with the first PSCCH or the first PSSCH, an interaction procedure of the first device and the second device is described below in connection with fig. 14.

Fig. 14 is an interaction diagram III of an information transmission method according to an embodiment of the present application. As shown in fig. 14, the information transmission method of the present embodiment includes the steps of:

step 401, the second device sends a first PSCCH or a first PSSCH to the first device.

Step 402, the first device determines a first spatial transmit filter to transmit a first PSFCH to the second device.

In this embodiment, the first device determines the first spatial transmit filter according to the spatial receive filter used in the first PSCCH or the first PSSCH from the second device.

Optionally, the first device uses a spatial reception filter used when the first device receives the first PSCCH or the first PSSCH from the second device as the first spatial transmission filter. That is, the first device transmits the first PSFCH to the second device using a spatial receive filter that receives the first PSCCH or the first PSSCH.

Step 403, the first device transmits the first PSFCH to the second device using the first spatial transmit filter.

Step 404, the second device determines a first spatial receive filter that receives the first PSFCH.

In this embodiment, the second device determines the first spatial reception filter according to the spatial transmission filter used when the second device transmits the first PSCCH or the first PSSCH.

Optionally, the second device uses a spatial transmit filter used when the second device transmits the first PSCCH or the first PSSCH to the first device as the first spatial receive filter. That is, the second device receives the first PSFCH using a spatial transmit filter that transmits the first PSCCH or the first PSSCH.

Step 405, the second device receives a first PSFCH using a first spatial receive filter.

It should be noted that the order of execution of the steps in this embodiment is merely an example, and should not be construed as limiting the present application.

In the above embodiment, the first device determines the spatial transmit filter of the first PSFCH transmitted by the first device by determining the spatial receive filter of the first PSCCH or the first PSSCH it receives from the second device. The second device determines a spatial receive filter by which the second device receives the first PSFCH by transmitting the first PSCCH or the spatial transmit filter of the first PSSCH to the first device. The above embodiment can improve the transmission quality of the sidestream communication.

The technical solutions of the above embodiments are described below with the first device being UE1 and the second device being UE 2.

If the UE2 uses the first transmission beam when transmitting the first PSCCH or the first PSSCH to the UE1, the UE1 receives the first PSCCH or the first PSSCH using the first reception beam, and when the UE1 transmits the first PSFCH associated with the first PSCCH or the first PSSCH to the UE2, the UE1 determines the second transmission beam according to the first reception beam, and the UE1 transmits the first PSFCH to the UE2 using the second transmission beam. The UE2 determines a second receive beam from the first transmit beam, and the UE2 receives the first PSFCH using the second receive beam.

Terminal devices of the sidestream communication system generally operate in a time division duplex (time division duplex, TDD) frequency band, that is, both sidestream transmission and sidestream reception are in the TDD frequency band, and the frequency band has channel reciprocity, that is, it can be considered that a channel when UE1 transmits sidestream data to UE2 has spatial correlation with a channel when UE2 transmits sidestream data to UE 1. Thus, the second transmit beam may be determined based on the first receive beam of UE 1. For example, transmitting the first PSFCH as the second transmit beam; similarly, the second receive beam may be determined based on the first transmit beam of UE2, e.g., the first transmit beam may be used as the second receive beam to receive the first PSFCH transmitted by UE 1.

Fig. 15 is a schematic diagram of a time slot/scenario of an information transmission method according to an embodiment of the present application. As shown in fig. 15, UE2 transmits a first PSCCH/first PSSCH using beam 2 (i.e., a first transmit beam) in slot 2, and UE1 receives the first PSCCH/first PSSCH using beam 1 (i.e., a first receive beam); UE1 determines to transmit a first PSFCH for the first PSCCH/first PSSCH at slot 5 and transmits the first PSFCH using beam 1 (i.e., the second transmit beam) and UE2 receives the first PSFCH using beam 2 (i.e., the second receive beam).

Based on one of the application scenarios of the above embodiments: in this scenario, the first device sends a first sidelink channel/a third sidelink channel to the second device, the first sidelink channel including a third PSFCH, the third sidelink channel including a third PSCCH or a third PSSCH, and an interaction procedure between the first device and the second device is described below with reference to fig. 16.

Fig. 16 is an interaction diagram of an information transmission method according to an embodiment of the present application. As shown in fig. 16, the information transmission method of the present embodiment includes the steps of:

step 501, the first device sends a third PSCCH or third pscsch to the second device.

Step 502, the first device determines a first spatial transmit filter to transmit a third PSFCH to the second device.

In this embodiment, the first device determines the first spatial transmission filter according to the spatial transmission filter used when the first device transmits the third PSCCH or the third PSCCH to the second device.

Optionally, the first device uses a spatial transmission filter used when the first device transmits the third PSCCH or the third PSSCH to the second device as the first spatial transmission filter. That is, the first device transmits the third PSFCH to the second device using a spatial transmit filter that transmits the third PSCCH or the third PSSCH.

Step 503, the first device sends a third PSFCH to the second device using the first spatial transmit filter.

Step 504, the second device determines a first spatial receive filter that receives the third PSFCH.

In this embodiment, the second device determines the first spatial reception filter according to the spatial reception filter used when the second device receives the third PSCCH or the third PSCCH from the first device.

Optionally, the second device uses a spatial reception filter used when the second device receives the third PSCCH or the third PSSCH from the first device as the first spatial reception filter. That is, the second device receives the third PSFCH using a spatial receive filter that receives the third PSCCH or the third PSSCH.

Step 505, the second device receives a third PSFCH using the first spatial receive filter.

In the above embodiment, the first device determines the spatial transmission filter of the first device transmitting the third PSFCH through the spatial transmission filter of the third PSCCH or the third PSSCH to the second device. The second device determines a spatial receive filter by which the second device receives the third PSCCH or the third PSSCH from the first device. The above embodiment can improve the transmission quality of the sidestream communication.

If the UE1 uses the third transmission beam when transmitting the third PSCCH or the third PSCCH to the UE2, the UE1 transmits the third PSFCH using the same transmission beam. If UE2 receives the third PSCCH or the third PSCCH using a third receive beam, UE2 receives the third PSFCH using the same receive beam.

When UE1 transmits the third PSCCH or the third PSCCH to UE2, the third transmission beam used by UE1 is the optimal transmission beam for determining UE1 through the beam selection procedure shown in fig. 10, that is, the beam suitable for side transmission between UE1 and UE2, and when UE1 transmits the third PSCCH or the third PSCCH to UE2, the same transmission beam (that is, the third transmission beam) as that used for transmitting the third PSCCH or the third PSCCH may be used.

In addition, for the third PSCCH or third PSSCH transmission, UE2 may learn a transmission beam (i.e., a third transmission beam) used by UE1, and UE2 may select a reception beam (i.e., a third reception beam) corresponding to the third transmission beam for receiving. The UE2 may receive the third PSFCH using the same beam (i.e., the third receive beam) as the third PSCCH or the third PSSCH.

Next, in connection with fig. 17, a description will be given of how the first device of the embodiment of fig. 12 determines the first spatial domain transmit filter according to the first reference signal resource indication information, and how the second device of the embodiment of fig. 13 determines the first spatial domain receive filter according to the first reference signal resource indication information.

Fig. 17 is an interaction diagram fifth of the information transmission method provided in the embodiment of the present application. As shown in fig. 17, the information transmission method of the present embodiment includes the steps of:

step 601, the first device determines first reference signal resource indication information.

Wherein the first reference signal resource indication information is used to indicate a first target reference signal resource. The first target reference signal resource is selected by the first device measuring a plurality of reference signals from the second device and based on the measurement results. The plurality of reference signals comprise reference signals corresponding to the first target reference signal resource

Specifically, the first device may determine the first reference signal resource indication information by:

step 6011, the first device receives a plurality of reference signals from the second device.

Step 6012, the first device measures a plurality of reference signals.

In step 6013, the first device selects a first target reference signal with an optimal measurement result from the plurality of reference signals.

Step 6014, the first device generates first reference signal resource indication information according to the selected first target reference signal.

It should be noted that, for a plurality of reference signals transmitted by the second device to the first device, the manner in which the second device transmits the plurality of reference signals is different based on different measurement purposes:

In the process of determining the optimal receiving beam of the first device, the second device uses the same beam to send a plurality of reference signals, the first device uses different beams to respectively receive the plurality of reference signals and measure, and the first device can select the receiving beam corresponding to the first target reference signal with the optimal measurement result as the optimal receiving beam of the first device.

In determining the optimal transmit beam of the second device, the second device transmits the plurality of reference signals using different beams, the first device receives and measures the plurality of reference signals using the same beam, respectively, and the first device may select the first target reference signal having the optimal measurement result. The second device may use the transmission beam corresponding to the first target reference signal selected by the first device as an optimal transmission beam of the second device. Accordingly, the first device uses the receiving beam corresponding to the optimal transmitting beam as an optimal receiving beam corresponding to the optimal transmitting beam, and further uses the optimal receiving beam as a first spatial domain transmitting filter.

Optionally, the first reference signal resource indication information comprises channel state information reference signal resource indication (CSI-RS resource indicator, CRI) information. The first reference signal resource indication information is used for indicating a first target reference signal resource, and includes: the CRI information is used for indicating a target CSI-RS resource, which is selected according to measurement results by the first device by measuring a plurality of CSI-RS from the second device.

For example, in determining an optimal transmit beam of the second device, the second device transmits multiple CSI-RSs to the first device using different transmit beams, and the first device receives and measures multiple CSI-RSs using the same receive beam (e.g., receive beam 1), and selects a target CSI-RS with an optimal measurement result. The first device reports CRI information to the second device, the CRI information is used for indicating the target CSI-RS resource, and the second device determines that a transmitting beam associated with the target CSI-RS is an optimal transmitting beam according to the CRI information. The first device determines a reception beam 1 associated with the target CSI-RS as an optimal reception beam corresponding to the optimal transmission beam.

Optionally, the first reference signal resource indication information is carried in SCI, MAC CE, PC5-RRC signaling or PSFCH.

Optionally, the reference signal includes any one of the following: CSI-RS, PSCCH DMRS, PSSCH DMRS.

Step 602, the first device sends first reference signal resource indication information to the second device.

Step 603, the first device determines a first spatial domain sending filter according to the first reference signal resource indication information.

In this embodiment, the first device determines, according to the spatial domain receiving filter corresponding to the first target reference signal resource indicated by the first reference signal resource indication information, a first spatial domain transmitting filter for the first device to transmit the first side channel to the second device. Wherein the first sidelink channel comprises PSCCH, PSSCH, PSBCH or PSFCH.

Optionally, the first device uses a spatial receiving filter corresponding to the first target reference signal resource as the first spatial transmitting filter. That is, the first device uses the spatial domain receiving filter corresponding to the first target reference signal resource to send the first side channel to the second device.

In this step, the first device obtains an optimal spatial reception filter (optimal reception beam) of the first device corresponding to the first target reference signal according to the first reference signal resource indication information, and uses the optimal spatial reception filter as a first spatial transmission filter for the first device to transmit the first side channel.

Step 604, the first device transmits a first side channel to the second device using a first spatial transmit filter.

Step 605, the second device determines a first spatial domain receiving filter according to the first reference signal resource indication information.

In this embodiment, the second device determines, according to the spatial domain transmit filter corresponding to the first target reference signal resource indicated by the first reference signal resource indication information, a first spatial domain receive filter for the second device to receive the first side channel from the first device.

Optionally, the second device uses a spatial transmit filter corresponding to the first target reference signal resource as the first spatial receive filter. That is, the second device receives the first side channel from the first device using the spatial transmit filter corresponding to the first target reference signal resource.

In some embodiments, the second device obtains an optimal spatial receiving filter of the first device corresponding to the first target reference signal according to the first reference signal resource indication information, and uses a spatial transmitting filter of the second device associated with the optimal spatial receiving filter as the first spatial receiving filter of the second device.

In other embodiments, the second device obtains an optimal spatial domain transmission filter of the second device corresponding to the first target reference signal according to the first reference signal resource indication information, and uses the optimal spatial domain transmission filter as a first spatial domain receiving filter of the second device.

Step 606, the second device receives the first side channel using the first spatial receive filter.

In the above embodiment, the first device determines the spatial transmit filter of the first side channel (including PSCCH, PSSCH, PSBCH or PSFCH) sent by the first device through the first reference signal resource indication information reported to the second device. The second device determines a spatial reception filter for the second device to receive the first side channel by receiving the first reference signal resource indication information from the first device. The above embodiment can improve the transmission quality of the sidestream communication.

The technical solution of the above embodiment is described below with the first device being UE1 and the second device being UE2.

Embodiment 1:

when determining the optimal receiving beam of the UE1, the UE2 uses the same beam (e.g. beam 1) to send CSI-RS in turn, the UE1 uses different beams to receive CSI-RS respectively and measure, and the UE1 selects the receiving beam corresponding to the CSI-RS with the optimal measurement result as the optimal receiving beam of the UE 1. UE1 reports CSI-RS resource indication information (CRI) corresponding to the optimal receiving beam to UE2.

When UE2 performs side transmission, the TCI indication information indicates that the PSSCH transmitted by UE2 and the CSI-RS corresponding to the optimal reception beam are quasi co-located in QCL-type, that is, it indicates that UE2 uses beam 1 to transmit the PSSCH, and at this time, UE1 may perform PSSCH reception using the optimal reception beam corresponding to the beam 1.

When UE1 transmits the PSFCH, UE1 may determine a corresponding transmit beam based on the optimal receive beam, e.g., UE1 transmits the PSFCH as the transmit beam. Similarly, UE2 may determine the corresponding receive beam based on the transmit beam associated with the optimal receive beam (i.e., beam 1), e.g., UE2 may receive the PSFCH from UE1 with that beam 1 as the receive beam.

Embodiment 2:

when determining the optimal transmitting beam of the UE2, the UE2 uses different beams to transmit CSI-RS in turn, the UE1 uses the same beam (e.g. beam 2) to receive CSI-RS respectively and measure, the UE1 selects CSI-RS with the optimal measurement result, and reports CSI-RS resource indication information (CRI) corresponding to the CSI-RS to the UE2.UE2 determines a transmission beam associated with the CSI-RS corresponding to the CRI as an optimal transmission beam (such as beam 3) according to the CRI reported by UE 1.

When UE2 performs side transmission, the TCI indication information indicates that the PSSCH transmitted by UE2 and the CSI-RS are quasi co-located in QCL-type, that is, indicates that UE2 transmits the PSSCH using beam 3, and at this time, UE1 may perform PSSCH reception using the optimal reception beam (i.e., beam 2) corresponding to the beam 3.

When UE1 transmits the PSFCH, UE1 may determine a corresponding transmit beam based on the optimal receive beam (i.e., beam 2), e.g., UE1 transmits the PSFCH as the transmit beam. Similarly, UE2 may determine a corresponding receive beam based on the optimal transmit beam (i.e., beam 3), e.g., UE2 may receive the PSFCH from UE1 with this beam 3 as the receive beam.

Next, in connection with fig. 18, a description will be given of how the first device of the embodiment of fig. 12 determines the first spatial domain transmit filter according to the second reference signal resource indication information, and how the second device of the embodiment of fig. 13 determines the first spatial domain receive filter according to the second reference signal resource indication information.

Fig. 18 is a sixth interaction diagram of the information transmission method provided in the embodiment of the present application. As shown in fig. 18, the information transmission method of the present embodiment includes the steps of:

step 701, the second device determines second reference signal resource indication information.

Wherein the second reference signal resource indication information is used to indicate a second target reference signal resource. The second target reference signal resource is selected by the second device according to the measurement results of the plurality of reference signals reported by the first device. The plurality of reference signals includes reference signals corresponding to the second target reference signal resource.

Specifically, the second device may determine the second reference signal resource indication information by:

step 7011, the second device transmits a plurality of reference signals to the first device.

Step 7012, the second device receives measurement results of the first device for measuring the plurality of reference signals.

Step 7013, the second device selects a second target reference signal with an optimal measurement result from the plurality of reference signals.

Step 7014, the second device generates second reference signal resource indication information according to the selected second target reference signal.

The above steps are similar to the implementation principle of steps 6011 to 6014 in the embodiment of fig. 17, except that the implementation main body for selecting the target reference signal is different, and in particular, reference may be made to the above embodiment, which is not repeated here.

Optionally, the second reference signal resource indication information includes transmission configuration indication (transmission configuration indicator, TCI) status information, and the reference signal included in the TCI status information is a reference signal corresponding to the second target reference signal resource.

Optionally, the TCI status information further includes a QCL type, which is QCL-type.

Optionally, the second reference signal resource indication information is carried in SCI, MAC CE, PC5-RRC signaling or PSFCH.

Step 702, the second device sends second reference signal resource indication information to the first device.

Step 703, the first device determines a first spatial domain transmission filter according to the second reference signal resource indication information.

In this embodiment, the first device determines, according to the spatial domain receiving filter corresponding to the second target reference signal resource indicated by the second reference signal resource indication information, a first spatial domain transmitting filter for transmitting the first side channel to the second device by the first device. Wherein the first sidelink channel comprises PSCCH, PSSCH, PSBCH or PSFCH.

Optionally, the first device uses a spatial receiving filter corresponding to the second target reference signal resource as the first spatial transmitting filter. That is, the first device uses the spatial domain receiving filter corresponding to the second target reference signal resource to send the first side channel to the second device.

In this step, the first device obtains an optimal spatial reception filter (optimal reception beam) of the first device corresponding to the second target reference signal according to the second target reference signal indication information, and uses the optimal spatial reception filter as a first spatial transmission filter for the first device to transmit the first side channel.

Step 704, the first device transmits a first side channel to the second device using a first spatial transmit filter.

Step 705, the second device determines a first spatial domain receiving filter according to the second reference signal resource indication information.

In this embodiment, the second device determines, according to the spatial domain transmit filter corresponding to the second target reference signal resource indicated by the second reference signal resource indication information, a first spatial domain receive filter for the second device to receive the first side channel from the first device.

Optionally, the second device uses a spatial transmit filter corresponding to the second target reference signal resource as the first spatial receive filter. That is, the second device receives the first side channel from the first device using the spatial transmit filter corresponding to the second target reference signal resource.

In some implementations, the second device obtains an optimal spatial receiving filter of the first device corresponding to the second target reference signal according to the second reference signal resource indication information, and takes a spatial transmitting filter of the second device associated with the optimal spatial receiving filter as the first spatial receiving filter of the second device.

In other implementations, the second device obtains an optimal spatial domain transmission filter of the second device corresponding to the second target reference signal according to the second reference signal resource indication information, and uses the optimal spatial domain transmission filter as a first spatial domain receiving filter of the second device.

Step 706, the second device receives the first side channel using the first spatial receive filter.

In the above embodiment, the first device determines the spatial transmit filter of the first side channel (including PSCCH, PSSCH, PSBCH or PSFCH) transmitted by the first device through the second reference signal resource indicator information from the second device. The second device determines a spatial receive filter for the second device to receive the first side channel. The above embodiment can improve the transmission quality of the sidestream communication.

The technical solution of the above embodiment is described below with the first device being UE1 and the second device being UE 2.

UE2 transmits indication information to UE1, and UE1 determines a beam for transmitting the PSFCH according to the indication information.

For example, the indication information includes TCI state information, and the TCI state information includes a reference signal, and when the reference signal indicates a certain CSI-RS resource, that is, indicates that the reception beam used when the UE1 uses to receive the CSI-RS resource is the optimal reception beam for the UE1 for side-track reception. Further, UE1 performs PSFCH transmission using a reception beam used when receiving the CSI-RS resource.

For another example, UE2 sends a first PSCCH/psch to UE1, including a CSI-RS resource identity in its SCI or MAC CE, which UE1 acquires, when UE1 is sending a PSFCH for the first PSCCH/psch, sending with a receive beam used when receiving the CSI-RS resource.

For another example, UE2 transmits a first PSCCH/PSCCH to UE1, including spatial correlation information in its SCI or MAC CE, the spatial correlation information being acquired by reference signal PSCCH DMRS, UE1, and when UE1 is transmitting a PSFCH for the first PSCCH/PSCCH, transmitting with a receive beam used in receiving PSCCH DMRS. Wherein the PSCCH DMRS is the DMRS corresponding to the first PSCCH. When UE2 transmits CSI-RS resource indication information (CRI) to UE1 for indicating a transmission beam used by UE1, UE2 receives side-line data transmitted by UE1, such as PSFCH, using the transmission beam associated with the CSI-RS resource as a reception beam.

Based on the above embodiment, if the first side channel includes the fifth PSFCH, after the first device determines the first spatial domain transmission filter, the first device uses the first spatial domain transmission filter to transmit the fifth PSFCH to the second device.

For the first device, if the first device has multiple PSFCHs to be transmitted in the time unit of the fifth PSFCH, whether the first device transmits and how to transmit the fifth PSFCH is a problem to be solved. In view of this problem, the present embodiment shows an information transmission method in which a first device can determine whether to transmit and how to transmit a fifth PSFCH according to priorities of a plurality of PSFCHs to be transmitted (including the fifth PSFCH).

In one possible implementation, if the fifth PSFCH is the PSFCH with the highest priority among the plurality of PSFCHs to be transmitted, the first device transmits the fifth PSFCH to the second device using the first spatial transmit filter.

In one possible implementation, if the fifth PSFCH is not the PSFCH having the highest priority among the plurality of PSFCHs to be transmitted, the first device determines a sixth PSFCH having the highest priority among the plurality of PSFCHs to be transmitted, determines a third spatial transmission filter for transmitting the sixth PSFCH, and determines whether to transmit the fifth PSFCH to the second device according to a relationship between the third spatial transmission filter and the first spatial transmission filter.

Optionally, if the third spatial transmission filter is the same as the first spatial transmission filter, the fifth PSFCH is transmitted to the second device using the first spatial transmission filter (i.e., the third spatial transmission filter). Alternatively, if the third spatial transmission filter is different from the first spatial transmission filter, the transmission of the fifth PSFCH to the second device is abandoned. Alternatively, if the third spatial transmission filter is different from the first spatial transmission filter, the fifth PSFCH is transmitted to the second device using the third spatial transmission filter.

In this embodiment, the implementation principle of the first device determining the third spatial domain transmission filter for transmitting the sixth PSFCH is similar to that of the first device determining the first spatial domain transmission filter in the above embodiment, and may be referred to the above embodiment.

In the information transmission method shown in this embodiment, when the first device sends the fifth PSFCH, there are multiple PSFCHs to be sent, and the first device may send the fifth PSFCH by using a spatial domain sending filter corresponding to the PSFCH with the highest priority in the multiple PSFCHs, so as to ensure the sending quality of the fifth PSFCH sent by the first device.

For the second device, if the second device has multiple PSFCHs to be received in a time unit for receiving the fifth PSFCH, how the second device receives the fifth PSFCH is a problem to be solved. In view of this problem, this embodiment shows an information transmission method in which the second device may receive the fifth PSFCH according to the spatial domain receive filter of the highest priority among the plurality of PSFCHs to be received.

In one possible implementation, if the fifth PSFCH is the PSFCH with the highest priority among the plurality of PSFCHs to be received, the second device receives the fifth PSFCH using the first spatial receive filter.

In one possible implementation, if the fifth PSFCH is not the PSFCH having the highest priority among the plurality of PSFCHs to be received, the second device determines a sixth PSFCH having the highest priority among the plurality of PSFCHs to be received, determines a third spatial reception filter for receiving the sixth PSFCH, and receives the fifth PSFCH using the third spatial reception filter.

In this embodiment, the implementation principle of the second device determining the third spatial domain transmit filter for receiving the sixth PSFCH is similar to that of the second device determining the first spatial domain receive filter in the above embodiment, and may be referred to the above embodiment.

In the information transmission method shown in this embodiment, when the second device has multiple PSFCHs for reception, the second device determines a spatial reception filter of a PSFCH with the highest priority among the multiple PSFCHs, and receives the multiple PSFCHs based on the spatial reception filter, thereby ensuring the reception quality of the PSFCH with the high priority.

Based on the above embodiment, if the first sidelink channel includes the seventh PSFCH, after the first device determines the first spatial domain transmission filter, the first device uses the first spatial domain transmission filter to transmit the seventh PSFCH to the second device.

If the first device has multiple PSFCHs to be transmitted in the time unit of the seventh PSFCH, and the first device supports transmitting multiple PSFCHs simultaneously, how to transmit multiple PSFCHs by the first device is a problem to be solved.

In view of this problem, this embodiment shows an information transmission method in which a first device may transmit a plurality of PSFCHs according to priorities of the plurality of PSFCHs, spatial transmission filters corresponding to each PSFCH, and a maximum number of first supported simultaneous transmission PSFCHs.

Specifically, the first device determines spatial transmission filters corresponding to the PSFCHs to be transmitted respectively, where the spatial transmission filter corresponding to the PSFCH with the highest priority among the PSFCHs to be transmitted is a fourth spatial transmission filter, and the PSFCHs to be transmitted include N1 PSFCHs using the fourth spatial transmission filter.

If N1 is less than or equal to the maximum number M1 of simultaneous PSFCHs supported by the first device, the first device uses a fourth spatial transmit filter to transmit N1 PSFCHs, where N1 and M1 are positive integers. Or alternatively

If N1 is greater than M1 of the PSFCHs that the first device supports to simultaneously transmit the PSFCHs, the first device selects M1 PSFCHs according to the order of priority of the plurality of PSFCHs using the fourth spatial transmission filter from high to low, and the first device uses the fourth spatial transmission filter to transmit the selected M1 PSFCHs.

Wherein N1 and M1 are both positive integers.

By the information transmission method of this embodiment, M1 PSFCHs with priority from high to low may be preferentially transmitted, and since the first device may use only one spatial transmission filter at the same time, the first device uses the spatial transmission filter corresponding to the PSFCH with the highest priority to transmit M1 PSFCHs, thereby preferentially ensuring transmission of the PSFCHs with high priority.

In the following, a first device is taken as an example of UE1, and several cases of how UE1 transmits PSFCH will be described.

Illustratively, when UE1 has multiple PSFCHs to transmit in a slot in which PSFCH1 is transmitted, UE1 transmits PSFCH1 in accordance with the transmit beam of the highest priority PSFCH (e.g., PSFCH 2) of the multiple PSFCHs.

For example, UE1 may transmit multiple PSFCHs simultaneously, and when transmitting multiple PSFCHs, select a transmit beam corresponding to the PSFCH with the highest priority to transmit all PSFCHs, including PSFCH1.

For example, as shown in fig. 15, UE1 determines to transmit a first PSFCH to UE2 in time slot 5 (the transmission beam of the first PSFCH is the first transmission beam), and at the same time, in this time slot, UE1 also needs to transmit a second PSFCH to other UEs (the transmission beam of the second PSFCH is the second transmission beam), and the second PSFCH has a higher priority than the first PSFCH, and UE1 needs to preferentially guarantee transmission of the high-priority PSFCH, and therefore, UE1 transmits the first PSFCH and the second PSFCH using the second transmission beam. Optionally, if there is an overlapping beam between the set of transmit beams determined according to the highest priority PSFCH and the set of transmit beams determined by the first PSFCH, the overlapping beam is preferentially used. Wherein the set of transmit beams comprises at least one transmit beam.

As illustrated in fig. 15, the UE1 determines to transmit the first PSFCH to the UE2 in the time slot 5 (the set of transmission beams of the first PSFCH includes the first transmission beam or the third transmission beam), and at the same time, in the time slot, the UE1 needs to transmit the second PSFCH to the other UE (the set of transmission beams of the second PSFCH includes the second transmission beam or the third transmission beam), and since both PSFCHs may use the third transmission beam, the UE1 transmits the first PSFCH and the second PSFCH using the third transmission beam, so that it may be ensured that the UE1 and the other terminals can receive the first PSFCH and the second PSFCH.

The following describes in detail the device for sidestream communication provided in the embodiment of the present application with reference to fig. 19 to 22.

Fig. 19 is a schematic structural diagram of a first device according to an embodiment of the present application. As shown in fig. 20, a first device 800 provided in this embodiment includes: a processing module 801, a transmitting module 802, and a receiving module 803.

A processing module 801, configured to determine a first spatial transmit filter for sidestream communication;

a transmitting module 802, configured to transmit a first side channel to a second device using the first spatial transmit filter.

In an alternative embodiment of this embodiment, the processing module 801 is configured to determine the first spatial transmission filter according to a spatial reception filter used when the receiving module 803 of the first device receives the second side channel from the second device.

In an alternative embodiment of the present embodiment, the second side-row channel includes a first PSCCH or a first PSSCH, the first side-row channel includes a first PSFCH, and the first PSFCH is a side-row feedback channel associated with the first PSCCH or the first PSSCH; alternatively, the second side-row channel comprises a second PSFCH and the first side-row channel comprises a second PSCCH or a second PSSCH.

In an optional embodiment of this embodiment, the processing module 801 is configured to:

the spatial domain receive filter used when the receiving module 803 receives the second sidelink channel from the second device is used as the first spatial domain transmit filter.

In an optional embodiment of this embodiment, the processing module 801 is configured to determine the first spatial transmission filter according to a second spatial transmission filter; the second spatial transmit filter is a spatial transmit filter used by the transmit module 802 to transmit a third sidelink channel to the second device.

In an alternative embodiment of the present embodiment, the third side-row channel includes a third PSCCH or a third PSSCH, and the first side-row channel includes a third PSFCH; alternatively, the third side-row channel comprises a fourth PSFCH, and the first side-row channel comprises a fourth PSCCH or a fourth PSSCH.

In an optional embodiment of this embodiment, the processing module 801 is configured to use the second spatial domain transmission filter as the first spatial domain transmission filter.

In an optional embodiment of the present embodiment, the processing module 801 is configured to determine the first spatial domain transmit filter according to first reference signal resource indication information, where the first reference signal resource indication information is used to indicate a first target reference signal resource, and the first target reference signal resource is selected according to a measurement result and a plurality of reference signals from the second device are measured by the first device.

In an optional embodiment of this embodiment, the sending module 802 is configured to report the first reference signal resource indication information to the second device.

In an optional embodiment of this embodiment, the processing module 801 is configured to determine the first spatial transmit filter according to a spatial receive filter corresponding to the first target reference signal resource.

In an optional embodiment of this embodiment, the processing module 801 is configured to use a spatial domain receiving filter corresponding to the first target reference signal resource as the first spatial domain transmitting filter.

In an alternative embodiment of the present embodiment, the first reference signal resource indication information includes channel state information reference signal resource indication (CSI-RS resource indicator, CRI) information;

the first reference signal resource indication information is used for indicating the first target reference signal resource, and includes:

the CRI information is used for indicating a target CSI-RS resource, and the target CSI-RS resource is selected according to measurement results by the first device and a plurality of CSI-RS from the second device.

In an alternative embodiment of this embodiment, the first reference signal resource indicator information is carried in a sidelink control information SCI, a medium access layer control unit MAC CE, a PC5 radio resource control RRC signaling or a PSFCH.

In an optional embodiment of this embodiment, the processing module 801 is configured to determine the first spatial domain transmit filter according to second reference signal resource indication information from the second device, where the second reference signal resource indication information is used to indicate a second target reference signal resource.

In an optional embodiment of this embodiment, the processing module 801 is configured to use a spatial receiving filter corresponding to the second target reference signal resource as the first spatial transmitting filter.

In an alternative embodiment of the present embodiment, the second reference signal resource indication information includes transmission configuration indication (transmission configuration indicator, TCI) status information; the reference signal included in the TCI state information is a reference signal corresponding to the second target reference signal resource.

In an alternative embodiment of this embodiment, the TCI status information further includes a QCL type, where the QCL type is QCL-type.

In an alternative embodiment of the present embodiment, the second reference signal resource indication information is carried in SCI, MAC CE, PC5-RRC signaling or PSFCH.

In an optional embodiment of this embodiment, the first sidelink channel includes a fifth PSFCH, and if the first device has a plurality of PSFCHs to be transmitted in a time unit of the first sidelink channel, and the fifth PSFCH is a PSFCH with a highest priority among the plurality of PSFCHs to be transmitted, the transmitting module 802 is configured to transmit the first sidelink channel to the second device using the first spatial domain transmit filter.

In an optional embodiment of this embodiment, if the fifth PSFCH is not the PSFCH with the highest priority among the plurality of PSFCHs to be sent, the processing module 801 is configured to:

Determining a sixth PSFCH having the highest priority from the plurality of PSFCHs to be transmitted, and determining a third spatial transmit filter for transmitting the sixth PSFCH; and determining whether to transmit the first side channel to the second device according to the relation between the third spatial domain transmission filter and the first spatial domain transmission filter.

In an optional embodiment of this embodiment, if the third spatial transmission filter is the same as the first spatial transmission filter, the transmitting module 802 uses the first spatial transmission filter to transmit the first side channel to the second device.

In an optional embodiment of this embodiment, if the third spatial transmission filter is different from the first spatial transmission filter, the transmitting module 802 discards transmitting the first side-channel to the second device, or uses the third spatial transmission filter to transmit the first side-channel to the second device.

In an optional embodiment of this embodiment, the first side-channel includes a seventh PSFCH, and if the first device has a plurality of PSFCHs to be sent in a time unit of the first side-channel, the processing module 801 determines spatial domain sending filters corresponding to the plurality of PSFCHs to be sent respectively;

The spatial transmission filter corresponding to the PSFCH with the highest priority among the plurality of PSFCHs to be transmitted is a fourth spatial transmission filter, N1 PSFCHs using the fourth spatial transmission filter are included in the plurality of PSFCHs to be transmitted, and the N1 is less than or equal to the maximum number M1 of simultaneously transmitted PSFCHs supported by the first device, and the transmission module 802 uses the fourth spatial transmission filter to transmit the N1 PSFCHs, where N1 and M1 are positive integers.

The first device provided in this embodiment is configured to execute the technical scheme executed by the first device in any of the foregoing method embodiments, and its implementation principle and technical effect are similar, and are not described herein again.

Fig. 20 is a schematic structural diagram of a second device according to an embodiment of the present application. As shown in fig. 20, the second device 900 provided in this embodiment includes: a processing module 901, a receiving module 902 and a transmitting module 903.

A processing module 901, configured to determine a first spatial domain receive filter for sidestream communications;

a receiving module 902 is configured to receive a first side channel from a first device using the first spatial receive filter.

In an optional embodiment of this embodiment, the processing module 901 is configured to determine the first spatial domain receiving filter according to a spatial domain sending filter used when the sending module 903 of the second device sends the second side channel to the first device.

In an optional embodiment of this embodiment, the processing module 901 is configured to use a spatial domain transmission filter used when the sending module 903 sends the second sidelink channel to the first device as the first spatial domain receiving filter.

In an optional embodiment of this embodiment, the processing module 901 is configured to determine the first spatial reception filter according to a second spatial reception filter; the second spatial reception filter is a spatial reception filter used when the reception module 902 receives a third side channel from the first device.

In an optional embodiment of this embodiment, the processing module 901 is configured to use the second spatial domain receive filter as the first spatial domain receive filter.

In an optional embodiment of this embodiment, the processing module 901 is configured to determine the first spatial domain receive filter according to first reference signal resource indication information from the first device, where the first reference signal resource indication information is used to indicate a first target reference signal resource.

In an optional embodiment of this embodiment, the sending module 903 is configured to send a plurality of reference signals to the first device, where the plurality of reference signals includes a reference signal corresponding to the first target reference signal resource.

In an optional embodiment of this embodiment, the processing module 901 is configured to determine the first spatial domain receiving filter according to a spatial domain sending filter corresponding to the first target reference signal resource.

In an optional embodiment of this embodiment, the processing module 901 is configured to use a spatial domain transmit filter corresponding to the first target reference signal resource as the first spatial domain receive filter.

The first reference signal resource indication information is used for indicating a first target reference signal resource, and includes: the CRI information is used for indicating a target CSI-RS resource, and the target CSI-RS resource is selected according to measurement results by the first device and a plurality of CSI-RS from the second device.

In an optional embodiment of this embodiment, the processing module 901 is configured to determine the first spatial domain receive filter according to second reference signal resource indication information, where the second reference signal resource indication information is used to indicate a second target reference signal resource.

In an optional embodiment of this embodiment, the sending module 903 is configured to send the second reference signal resource indication information to the first device, where the second reference signal resource indication information is used for the first device to determine a spatial domain receive filter.

In an optional embodiment of this embodiment, the processing module 901 is configured to determine the first spatial receiving filter according to a spatial transmitting filter corresponding to the second target reference signal resource.

In an optional embodiment of this embodiment, the processing module 901 is configured to use a spatial domain transmit filter corresponding to the second target reference signal resource as the first spatial domain receive filter.

In an optional embodiment of this embodiment, the first side-channel includes a fifth PSFCH, if the second device has a plurality of PSFCHs to be received in a time unit for receiving the first side-channel;

if the fifth PSFCH is the PSFCH with the highest priority among the plurality of PSFCHs to be received, the receiving module 902 receives the first side channel using the first spatial domain receive filter; or alternatively

If the fifth PSFCH is not the PSFCH with the highest priority in the plurality of PSFCHs to be received, the processing module 901 determines a sixth PSFCH with the highest priority from the plurality of PSFCHs to be received, and determines a third spatial domain receiving filter for receiving the sixth PSFCH; the receiving module 902 receives the first side-channel using the third spatial receive filter.

The second device provided in this embodiment is configured to execute the technical scheme executed by the second device in any of the foregoing method embodiments, and its implementation principle and technical effect are similar, and are not described herein again.

Fig. 21 is a schematic hardware structure diagram of an electronic device according to an embodiment of the present application. As shown in fig. 21, the electronic device 1000 provided in this embodiment may include:

a processor 1001, a memory 1002, and a communication interface 1003. Wherein the memory 1002 is for storing a computer program; a processor 1001 for executing computer programs stored in a memory 1002 for implementing the method performed by the first device in any of the method embodiments described above. Communication interface 1003 is used for data communication or signal communication with other devices.

Alternatively, the memory 1002 may be separate or integrated with the processor 1001. When the memory 1002 is a device separate from the processor 1001, the electronic apparatus 1000 may further include: a bus 1004 for connecting the memory 1002 and the processor 1001.

In a possible implementation, the processing module 801 in fig. 19 may be implemented in the processor 1001, and the transmitting module 802 and the receiving module 803 in fig. 19 may be implemented in the communication interface 1003.

The electronic device provided in this embodiment may be used to execute the method executed by the first device in any of the foregoing method embodiments, and its implementation principle and technical effects are similar, and are not repeated here.

Fig. 22 is a second schematic hardware structure of the electronic device according to the embodiment of the present application. As shown in fig. 22, the electronic device 1100 provided in this embodiment may include:

a processor 1101, a memory 1102, and a communication interface 1103. Wherein the memory 1102 is used for storing a computer program; a processor 1101, configured to execute a computer program stored in the memory 1102, to implement a method performed by the second device in any of the foregoing method embodiments. A communication interface 1103 for communicating data or signals with other devices.

Alternatively, the memory 1102 may be separate or integrated with the processor 1101. When the memory 1102 is a device separate from the processor 1101, the electronic device 1100 may further include: a bus 1104 for connecting the memory 1102 and the processor 1101.

In one possible implementation, the processing module 901 in fig. 20 may be implemented in the processor 1101, and the transmitting module 903 and the receiving module 902 in fig. 20 may be implemented in the communication interface 1103.

The electronic device provided in this embodiment may be used to execute the method executed by the second device in any of the foregoing method embodiments, and its implementation principle and technical effects are similar, and are not repeated here.

The embodiment of the application further provides a computer readable storage medium, in which computer executable instructions are stored, and when the computer executable instructions are executed by a processor, the technical solution of the first device in any of the foregoing method embodiments is implemented.

The embodiment of the application further provides a computer readable storage medium, in which computer executable instructions are stored, and when the computer executable instructions are executed by a processor, the technical solution of the second device in any of the foregoing method embodiments is implemented.

The embodiment of the application further provides a computer program, which when executed by a processor, is configured to perform the technical solution of the first device in any of the foregoing method embodiments.

The embodiment of the application further provides a computer program, which when executed by a processor, is configured to perform the technical solution of the second device in any of the foregoing method embodiments.

The embodiment of the application also provides a computer program product, which comprises program instructions for implementing the technical scheme of the first device in any of the foregoing method embodiments.

The embodiment of the application also provides a computer program product, which comprises program instructions for implementing the technical scheme of the second device in any of the foregoing method embodiments.

The embodiment of the application also provides a chip, which comprises: the processing module and the communication interface, where the processing module can execute the technical solution of the first device in the foregoing method embodiment. Further, the chip further includes a storage module (e.g., a memory), where the storage module is configured to store the instruction, and the processing module is configured to execute the instruction stored in the storage module, and execution of the instruction stored in the storage module causes the processing module to execute the technical solution of the first device in any one of the foregoing method embodiments.

The embodiment of the application also provides a chip, which comprises: the processing module and the communication interface, where the processing module can execute the technical solution of the second device in the foregoing method embodiment. Further, the chip further includes a storage module (e.g., a memory), where the storage module is configured to store the instruction, and the processing module is configured to execute the instruction stored in the storage module, and execution of the instruction stored in the storage module causes the processing module to execute the technical solution of the second device in any of the foregoing method embodiments.

According to the method provided by the embodiment of the application, the embodiment of the application also provides a communication system, and the communication system can comprise the first device and the second device, wherein the first device and the second device are in direct communication.

It should be noted that, the above division of the respective modules of the first device 800 and the second device 900 is merely a division of logic functions, and may be integrated in whole or in part into one physical entity or may be physically separated. And these modules may all be implemented in software in the form of calls by the processing element; or can be realized in hardware; the method can also be realized in a form of calling software by a processing element, and the method can be realized in a form of hardware by a part of modules. For example, the processing module may be a processing element that is set up separately, may be implemented in a chip of the above device, or may be stored in a memory of the above device in the form of program code, and may be called by a processing element of the above device to execute the functions of the above determination module. The implementation of the other modules is similar. In addition, all or part of the modules can be integrated together or can be independently implemented. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in a software form.

For example, the modules above may be one or more integrated circuits configured to implement the methods above, such as: one or more specific integrated circuits (application specific integrated circuit, ASIC), or one or more microprocessors (digital signal processor, DSP), or one or more field programmable gate arrays (field programmable gate array, FPGA), or the like. For another example, when a module above is implemented in the form of a processing element scheduler code, the processing element may be a general purpose processor, such as a central processing unit (central processing unit, CPU) or other processor that may invoke the program code. For another example, the modules may be integrated together and implemented in the form of a system-on-a-chip (SOC).

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in or transmitted from one computer-readable storage medium to another, for example, by wired (e.g., coaxial cable, optical fiber, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

An information transmission method, applied to a first device, comprising:

determining a first spatial transmit filter for sidestream communications;

and transmitting a first side channel to the second equipment by using the first spatial domain transmission filter.
The method of claim 1, wherein the step of determining the position of the substrate comprises,

the determining a first spatial transmit filter for sidestream communications includes:

and determining the first spatial domain sending filter according to a spatial domain receiving filter used when the first equipment receives a second side channel from the second equipment.
The method of claim 2, wherein the step of determining the position of the substrate comprises,

the second side-row channel comprises a first PSCCH or a first PSSCH, the first side-row channel comprising a first PSFCH, the first PSFCH being a side-row feedback channel associated with the first PSCCH or the first PSSCH; or alternatively

The second sidelink channel comprises a second PSFCH and the first sidelink channel comprises a second PSCCH or a second PSSCH.
A method according to claim 2 or 3, characterized in that,

the determining the first spatial domain transmission filter according to the spatial domain reception filter used when the first device receives the second side channel from the second device includes:

and taking a spatial domain receiving filter used when the first equipment receives a second side channel from the second equipment as the first spatial domain sending filter.
The method of claim 1, wherein the step of determining the position of the substrate comprises,

the determining a first spatial transmit filter for sidestream communications includes:

determining the first spatial domain transmission filter according to a second spatial domain transmission filter;

the second spatial transmission filter is a spatial transmission filter used when the first device transmits a third sidelink channel to the second device.
The method of claim 5, wherein the step of determining the position of the probe is performed,

the third side channel comprises a third PSCCH or a third PSSCH, and the first side channel comprises a third PSFCH; alternatively, the third side-row channel comprises a fourth PSFCH, and the first side-row channel comprises a fourth PSCCH or a fourth PSSCH.
The method according to claim 5 or 6, wherein,

the determining the first spatial transmit filter according to the second spatial transmit filter includes:

and taking the second spatial domain transmission filter as the first spatial domain transmission filter.
The method of claim 1, wherein the step of determining the position of the substrate comprises,

the determining a first spatial transmit filter for sidestream communications includes:

and determining the first spatial domain transmission filter according to first reference signal resource indication information, wherein the first reference signal resource indication information is used for indicating a first target reference signal resource, and the first target reference signal resource is selected according to measurement results by the first equipment and a plurality of reference signals from the second equipment.
The method of claim 8, wherein the method further comprises:

and reporting the first reference signal resource indication information to the second equipment.
The method according to claim 8 or 9, wherein,

the determining the first spatial domain transmission filter according to the first reference signal resource indication information includes:

and determining the first spatial domain sending filter according to the spatial domain receiving filter corresponding to the first target reference signal resource.
The method of claim 10, wherein the determining the first spatial transmit filter based on the spatial receive filter corresponding to the first target reference signal resource comprises:

and taking the spatial domain receiving filter corresponding to the first target reference signal resource as the first spatial domain sending filter.
The method according to any of claims 8-11, wherein the first reference signal resource indication information comprises channel state information reference signal resource indication (CSI-RS resource indicator, CRI) information;

the first reference signal resource indication information is used for indicating the first target reference signal resource, and includes:

the CRI information is used for indicating a target CSI-RS resource, and the target CSI-RS resource is selected according to measurement results by the first device and a plurality of CSI-RS from the second device.
The method according to any of the claims 8-12, characterized in that the first reference signal resource indication information is carried in a side-row control information SCI, a medium access layer control element MAC CE, a PC5 radio resource control RRC signaling or a PSFCH.
The method of claim 1, wherein the step of determining the position of the substrate comprises,

The determining a first spatial transmit filter for sidestream communications includes:

and determining the first spatial domain transmission filter according to second reference signal resource indication information from the second equipment, wherein the second reference signal resource indication information is used for indicating second target reference signal resources.
The method of claim 14, wherein the determining the first spatial transmit filter based on second reference signal resource indication information from the second device comprises:

and taking the spatial domain receiving filter corresponding to the second target reference signal resource as the first spatial domain sending filter.
The method according to claim 14 or 15, wherein the second reference signal resource indication information comprises transmission configuration indication (transmission configuration indicator, TCI) status information; the reference signal included in the TCI state information is a reference signal corresponding to the second target reference signal resource.
The method of claim 16, wherein the TCI state information further comprises a QCL type, the QCL type being QCL-type.
The method according to any of claims 14-17, wherein the second reference signal resource indication information is carried in SCI, MAC CE, PC5-RRC signaling or PSFCH.
The method of any of claims 1-18, wherein the first side channel comprises a fifth PSFCH, and wherein if the first device has a plurality of PSFCHs to be transmitted on a time unit of the first side channel, the method further comprises:

and if the fifth PSFCH is the PSFCH with the highest priority among the PSFCH to be transmitted, transmitting the first side channel to the second device by using the first spatial domain transmission filter.
The method of claim 19, wherein if the fifth PSFCH is not the PSFCH having the highest priority among the plurality of PSFCHs to be transmitted, the method further comprises:

determining a sixth PSFCH having the highest priority from the plurality of PSFCHs to be transmitted, and determining a third spatial transmit filter for transmitting the sixth PSFCH; and determining whether to transmit the first side channel to the second device according to the relation between the third spatial domain transmission filter and the first spatial domain transmission filter.
The method of claim 20, wherein the determining whether to transmit the first side channel to the second device based on the relationship of the third spatial transmit filter and the first spatial transmit filter comprises:

If the third spatial domain transmission filter is the same as the first spatial domain transmission filter, transmitting the first side channel to the second device by using the first spatial domain transmission filter; or alternatively

And if the third spatial transmission filter is different from the first spatial transmission filter, discarding the transmission of the first side channel to the second device, or using the third spatial transmission filter to transmit the first side channel to the second device.
The method of any of claims 1-18, wherein the first side channel comprises a seventh PSFCH, and wherein if the first device has a plurality of PSFCHs to be transmitted on a time unit of the first side channel, the method further comprises:

determining spatial transmission filters corresponding to the PSFCHs to be transmitted respectively, wherein the spatial transmission filter corresponding to the PSFCH with the highest priority in the PSFCHs to be transmitted is a fourth spatial transmission filter, the PSFCHs to be transmitted comprise N1 PSFCHs using the fourth spatial transmission filter, the N1 is smaller than or equal to the maximum number M1 of PSFCHs which are simultaneously transmitted and supported by the first equipment, and the N1 PSFCHs are transmitted by using the fourth spatial transmission filter, wherein N1 and M1 are positive integers.
An information transmission method, applied to a second device, comprising:

determining a first spatial receive filter for sidestream communications;

a first side channel from a first device is received using the first spatial receive filter.
The method of claim 23, wherein the determining the first spatial receive filter for sidestream communications comprises:

and determining the first spatial receiving filter according to a spatial transmitting filter used when the second equipment transmits a second side channel to the first equipment.
The method of claim 24, wherein the step of determining the position of the probe is performed,

the second side-row channel comprises a first PSCCH or a first PSSCH, the first side-row channel comprising a first PSFCH, the first PSFCH being a side-row feedback channel associated with the first PSCCH or the first PSSCH; or alternatively

The second sidelink channel comprises a second PSFCH and the first sidelink channel comprises a second PSCCH or a second PSSCH.
The method of claim 24 or 25, wherein the determining the first spatial receive filter based on a spatial transmit filter used by the second device to transmit a second sidelink channel to the first device comprises:

And taking a spatial domain transmission filter used when the second equipment transmits a second side channel to the first equipment as the first spatial domain receiving filter.
The method of claim 23, wherein the step of determining the position of the probe is performed,

the determining a first spatial receive filter for sidestream communications includes:

determining the first spatial domain receiving filter according to the second spatial domain receiving filter;

the second spatial domain receive filter is a spatial domain receive filter used by the second device when receiving a third side channel from the first device.
The method of claim 27, wherein the step of determining the position of the probe is performed,

the third side channel comprises a third PSCCH or a third PSSCH, and the first side channel comprises a third PSFCH; alternatively, the third side-row channel comprises a fourth PSFCH, and the first side-row channel comprises a fourth PSCCH or a fourth PSSCH.
The method according to claim 27 or 28, wherein,

the determining the first spatial reception filter according to the second spatial reception filter includes:

and taking the second spatial domain receiving filter as the first spatial domain receiving filter.
The method of claim 23, wherein the determining the first spatial receive filter for sidestream communications comprises:

And determining the first spatial domain receiving filter according to first reference signal resource indication information from the first equipment, wherein the first reference signal resource indication information is used for indicating first target reference signal resources.
The method of claim 30, wherein the method further comprises:

and transmitting a plurality of reference signals to the first device, wherein the plurality of reference signals comprise reference signals corresponding to the first target reference signal resource.
The method of claim 30 or 31, wherein said determining the first spatial receive filter based on first reference signal resource indication information from the first device comprises:

and determining the first airspace receiving filter according to the airspace sending filter corresponding to the first target reference signal resource.
The method of claim 32, wherein the determining the first spatial receive filter based on the spatial transmit filter corresponding to the first target reference signal resource comprises:

and taking the spatial domain sending filter corresponding to the first target reference signal resource as the first spatial domain receiving filter.
The method according to any of claims 30-33, wherein the first reference signal resource indication information comprises channel state information reference signal resource indication (CSI-RS resource indicator, CRI) information;

the first reference signal resource indication information is used for indicating a first target reference signal resource, and includes:

the CRI information is used for indicating a target CSI-RS resource, and the target CSI-RS resource is selected according to measurement results by the first device and a plurality of CSI-RS from the second device.
The method according to any of the claims 30-34, characterized in that the first reference signal resource indication information is carried in a side-row control information SCI, a medium access layer control element MAC CE, a PC5 radio resource control RRC signaling or a PSFCH.
The method of claim 23, wherein the determining the first spatial receive filter for sidestream communications comprises:

and determining the first spatial domain receiving filter according to second reference signal resource indication information, wherein the second reference signal resource indication information is used for indicating second target reference signal resources.
The method of claim 36, wherein the method further comprises:

And sending the second reference signal resource indication information to the first equipment, wherein the second reference signal resource indication information is used for determining a spatial domain receiving filter by the first equipment.
The method of claim 36 or 37, wherein said determining the first spatial receive filter based on second reference signal resource indication information comprises:

and determining the first spatial domain receiving filter according to the spatial domain sending filter corresponding to the second target reference signal resource.
The method of claim 38, wherein the determining the first spatial receive filter based on the spatial transmit filter corresponding to the second target reference signal resource comprises:

and taking the spatial domain sending filter corresponding to the second target reference signal resource as the first spatial domain receiving filter.
The method according to any of the claims 36-39, wherein the second reference signal resource indication information comprises transmission configuration indication (transmission configuration indicator, TCI) status information;

the reference signal included in the TCI state information is a reference signal corresponding to the second target reference signal resource.
The method of claim 40, wherein the TCI status information further comprises a QCL type, the QCL type being QCL-TypeD.
The method of any of claims 36-41, wherein the second reference signal resource indication information is carried in SCI, MAC CE, PC5-RRC signaling, or PSFCH.
The method of any of claims 23-42, wherein the first side channel includes a fifth PSFCH, and if the second device has a plurality of PSFCHs to receive on a time unit that receives the first side channel, the method further comprises:

if the fifth PSFCH is the PSFCH with the highest priority among the plurality of PSFCHs to be received, receiving the first side channel by using the first spatial domain receiving filter; or alternatively

If the fifth PSFCH is not the PSFCH with the highest priority in the PSFCHs to be received, determining a sixth PSFCH with the highest priority from the PSFCHs to be received, and determining a third spatial domain receiving filter for receiving the sixth PSFCH; the first side channel is received using the third spatial receive filter.
A first device, comprising:

The processing module is used for determining a first airspace transmission filter for sidestream communication;

and the transmitting module is used for transmitting the first side channel to the second equipment by using the first spatial domain transmitting filter.
The apparatus of claim 44, wherein the processing module is configured to determine the first spatial transmit filter based on a spatial receive filter used by the receiving module of the first device when receiving the second side channel from the second device.
The apparatus of claim 45, wherein the device comprises,

the second side-row channel comprises a first PSCCH or a first PSSCH, the first side-row channel comprising a first PSFCH, the first PSFCH being a side-row feedback channel associated with the first PSCCH or the first PSSCH; or alternatively

The second sidelink channel comprises a second PSFCH and the first sidelink channel comprises a second PSCCH or a second PSSCH.
The apparatus of claim 45 or 46, wherein the processing module is configured to:

and taking a spatial domain receiving filter used by the receiving module when receiving a second side channel from the second equipment as the first spatial domain sending filter.
The apparatus of claim 44, wherein the processing module is configured to determine the first spatial transmit filter based on a second spatial transmit filter; the second spatial transmission filter is a spatial transmission filter used when the transmission module transmits a third sidelink channel to the second device.
The apparatus of claim 48, wherein the device comprises,

the third side channel comprises a third PSCCH or a third PSSCH, and the first side channel comprises a third PSFCH; alternatively, the third side-row channel comprises a fourth PSFCH, and the first side-row channel comprises a fourth PSCCH or a fourth PSSCH.
The apparatus of claim 48 or 49, wherein said processing module is configured to use said second spatial transmit filter as said first spatial transmit filter.
The apparatus of claim 44, wherein the processing module is configured to determine the first spatial transmit filter based on first reference signal resource indication information indicating first target reference signal resources that the first apparatus measures multiple reference signals from the second apparatus and selects based on measurement results.
The device of claim 51, wherein the means for transmitting is configured to report the first reference signal resource indication information to the second device.
The apparatus of claim 51 or 52, wherein the processing module is configured to determine the first spatial transmit filter based on a spatial receive filter corresponding to the first target reference signal resource.
The apparatus of claim 53, wherein the processing module is configured to use a spatial receive filter corresponding to the first target reference signal resource as the first spatial transmit filter.
The apparatus of any of claims 51-54, wherein the first reference signal resource indication information comprises channel state information reference signal resource indication (CSI-RS resource indicator, CRI) information;

the first reference signal resource indication information is used for indicating the first target reference signal resource, and includes:

the CRI information is used for indicating a target CSI-RS resource, and the target CSI-RS resource is selected according to measurement results by the first device and a plurality of CSI-RS from the second device.
The apparatus according to any of the claims 51-55, wherein the first reference signal resource indication information is carried in a side-row control information SCI, a medium access layer control element MAC CE, a PC5 radio resource control RRC signaling or a PSFCH.
The apparatus of claim 44, wherein the processing module is configured to determine the first spatial transmit filter based on second reference signal resource indication information from the second apparatus, the second reference signal resource indication information being used to indicate a second target reference signal resource.
The apparatus of claim 57, wherein the processing module is configured to use a spatial receive filter corresponding to the second target reference signal resource as the first spatial transmit filter.
The apparatus according to claim 57 or 58, wherein the second reference signal resource indication information comprises transmission configuration indication (transmission configuration indicator, TCI) status information; the reference signal included in the TCI state information is a reference signal corresponding to the second target reference signal resource.
The apparatus of claim 59, wherein the TCI status information further comprises a QCL type, the QCL type being QCL-TypeD.
The apparatus of any of claims 57-60, wherein the second reference signal resource indication information is carried in SCI, MAC CE, PC5-RRC signaling, or PSFCH.
The apparatus of any of claims 44-61, wherein the first side channel comprises a fifth PSFCH, and wherein the transmitting module is configured to transmit the first side channel to the second device using the first spatial transmit filter if the first device has a plurality of PSFCHs to be transmitted over a time unit of the first side channel, and the fifth PSFCH is a PSFCH of the plurality of PSFCHs to be transmitted that has a highest priority.
The apparatus of claim 62, wherein if the fifth PSFCH is not the PSFCH having the highest priority among the plurality of PSFCHs to be transmitted, the processing module is configured to:

determining a sixth PSFCH having the highest priority from the plurality of PSFCHs to be transmitted, and determining a third spatial transmit filter for transmitting the sixth PSFCH; and determining whether to transmit the first side channel to the second device according to the relation between the third spatial domain transmission filter and the first spatial domain transmission filter.
The apparatus of claim 63, wherein the device comprises,

if the third spatial transmission filter is the same as the first spatial transmission filter, the transmission module uses the first spatial transmission filter to transmit the first side channel to the second device; or alternatively

And if the third spatial transmission filter is different from the first spatial transmission filter, the transmission module gives up to transmit the first side channel to the second device, or uses the third spatial transmission filter to transmit the first side channel to the second device.
The apparatus of any one of claims 44-61, wherein the first side channel includes a seventh PSFCH, and the processing module determines spatial transmit filters for each of the plurality of PSFCHs to be transmitted if the first apparatus has a plurality of PSFCHs to be transmitted in a time unit of the first side channel; the spatial transmission filter corresponding to the PSFCH with the highest priority among the PSFCHs to be transmitted is a fourth spatial transmission filter, the PSFCHs to be transmitted comprise N1 PSFCHs using the fourth spatial transmission filter, the N1 is smaller than or equal to the maximum number M1 of simultaneous transmission PSFCHs supported by the first device, and the transmission module uses the fourth spatial transmission filter to transmit the N1 PSFCHs, wherein N1 and M1 are positive integers.
A second device, comprising:

the processing module is used for determining a first airspace receiving filter for sidestream communication;

and the receiving module is used for receiving a first side channel from the first equipment by using the first spatial domain receiving filter.
The device of claim 66, wherein the processing module is configured to determine the first spatial receive filter based on a spatial transmit filter used by the second device's transmit module to transmit a second sidelink channel to the first device.
The apparatus of claim 67, wherein the device comprises,

the second side-row channel comprises a first PSCCH or a first PSSCH, the first side-row channel comprising a first PSFCH, the first PSFCH being a side-row feedback channel associated with the first PSCCH or the first PSSCH; or alternatively

The second sidelink channel comprises a second PSFCH and the first sidelink channel comprises a second PSCCH or a second PSSCH.
The device of claim 67 or 68, wherein the processing module is configured to use a spatial transmit filter used by the transmitting module when transmitting a second sidelink channel to the first device as the first spatial receive filter.
The apparatus of claim 66, wherein the processing module is configured to determine the first spatial receive filter based on a second spatial receive filter; the second spatial reception filter is a spatial reception filter used when the reception module receives a third side channel from the first device.
The apparatus of claim 70, wherein the device comprises a plurality of sensors,

the third side channel comprises a third PSCCH or a third PSSCH, and the first side channel comprises a third PSFCH; alternatively, the third side-row channel comprises a fourth PSFCH, and the first side-row channel comprises a fourth PSCCH or a fourth PSSCH.
The apparatus of claim 70 or 71, wherein the processing module is configured to use the second spatial receive filter as the first spatial receive filter.
The apparatus of claim 66, wherein the processing module is configured to determine the first spatial receive filter based on first reference signal resource indication information from the first apparatus, the first reference signal resource indication information being used to indicate first target reference signal resources.
The apparatus of claim 73, wherein the second apparatus further comprises: a transmitting module;

The sending module is configured to send a plurality of reference signals to the first device, where the plurality of reference signals includes a reference signal corresponding to the first target reference signal resource.
The apparatus of claim 73 or 74, wherein the processing module is configured to determine the first spatial receive filter based on a spatial transmit filter corresponding to the first target reference signal resource.
The apparatus of claim 75, wherein the processing module is configured to use a spatial transmit filter corresponding to the first target reference signal resource as the first spatial receive filter.
The apparatus of any one of claims 73-76, wherein the first reference signal resource indication information comprises channel state information reference signal resource indication (CSI-RS resource indicator, CRI) information;

the first reference signal resource indication information is used for indicating a first target reference signal resource, and includes:

the CRI information is used for indicating a target CSI-RS resource, and the target CSI-RS resource is selected according to measurement results by the first device and a plurality of CSI-RS from the second device.
The arrangement according to any of the claims 73-77, characterized in that said first reference signal resource indication information is carried in a side-row control information SCI, a medium access layer control element MAC CE, a PC5 radio resource control RRC signaling or a PSFCH.
The apparatus of claim 66, wherein the processing module is configured to determine the first spatial receive filter based on second reference signal resource indication information indicating second target reference signal resources.
The apparatus of claim 79, wherein the second apparatus further comprises: a transmitting module;

the sending module is configured to send the second reference signal resource indication information to the first device, where the second reference signal resource indication information is used for the first device to determine a spatial domain receiving filter.
The apparatus of claim 79 or 80, wherein the processing module is configured to determine the first spatial receive filter based on a spatial transmit filter corresponding to the second target reference signal resource.
The apparatus of claim 81, wherein the processing module is configured to use a spatial transmit filter corresponding to the second target reference signal resource as the first spatial receive filter.
The apparatus according to any of claims 79-82, wherein the second reference signal resource indication information comprises transmission configuration indication (transmission configuration indicator, TCI) status information;

the reference signal included in the TCI state information is a reference signal corresponding to the second target reference signal resource.
The device of claim 83, wherein the TCI state information further comprises a QCL type, the QCL type being QCL-type.
The apparatus of any of claims 79-84, wherein the second reference signal resource indication information is carried in SCI, MAC CE, PC5-RRC signaling, or PSFCH.
The apparatus of any of claims, wherein the first side channel comprises a fifth PSFCH if the second apparatus has a plurality of PSFCHs to be received on a time unit in which the first side channel is received;

if the fifth PSFCH is the PSFCH with the highest priority among the plurality of PSFCHs to be received, the receiving module receives the first side channel by using the first spatial domain receiving filter; or alternatively

If the fifth PSFCH is not the PSFCH with the highest priority in the plurality of PSFCHs to be received, the processing module determines a sixth PSFCH with the highest priority from the plurality of PSFCHs to be received, and determines a third spatial domain receiving filter for receiving the sixth PSFCH; the receiving module receives the first side channel using the third spatial receive filter.
An electronic device, comprising: a memory for storing a computer program and a processor for calling and running the computer program from the memory, such that the processor runs the computer program to perform the method of any of claims 1-22.
An electronic device, comprising: a memory for storing a computer program and a processor for calling and running the computer program from the memory, such that the processor runs the computer program to perform the method of any of claims 23-43.
A computer storage medium storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 1-22.
A computer storage medium storing a computer program which, when run on a computer, causes the computer to perform the method of any one of claims 23-43.
A computer program product, characterized in that the computer program product, when run on a computer, causes the computer to perform the method according to any of claims 1-22.
A computer program product, characterized in that the computer program product, when run on a computer, causes the computer to perform the method according to any of claims 23-43.