WO2023019465A1 - 无线通信的方法和终端设备 - Google Patents

无线通信的方法和终端设备 Download PDF

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Publication number
WO2023019465A1
WO2023019465A1 PCT/CN2021/113220 CN2021113220W WO2023019465A1 WO 2023019465 A1 WO2023019465 A1 WO 2023019465A1 CN 2021113220 W CN2021113220 W CN 2021113220W WO 2023019465 A1 WO2023019465 A1 WO 2023019465A1
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WO
WIPO (PCT)
Prior art keywords
csi
terminal device
resources
information
resource
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Ceased
Application number
PCT/CN2021/113220
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English (en)
French (fr)
Inventor
赵振山
张世昌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
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Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to CN202180101513.XA priority Critical patent/CN117941430A/zh
Priority to PCT/CN2021/113220 priority patent/WO2023019465A1/zh
Priority to EP21953713.1A priority patent/EP4391677A4/en
Publication of WO2023019465A1 publication Critical patent/WO2023019465A1/zh
Priority to US18/433,261 priority patent/US20240244587A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/02Selection of wireless resources by user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0686Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0695Hybrid systems, i.e. switching and simultaneous transmission using beam selection
    • H04B7/06952Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0001Arrangements for dividing the transmission path
    • H04L5/0014Three-dimensional division
    • H04L5/0023Time-frequency-space
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/0091Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094Indication of how sub-channels of the path are allocated
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/04Wireless resource allocation
    • H04W72/044Wireless resource allocation based on the type of the allocated resource
    • H04W72/046Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/25Control channels or signalling for resource management between terminals via a wireless link, e.g. sidelink
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0033Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation each allocating device acting autonomously, i.e. without negotiation with other allocating devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00Arrangements affording multiple use of the transmission path
    • H04L5/003Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0057Physical resource allocation for CQI

Definitions

  • the embodiments of the present application relate to the communication field, and more specifically, relate to a wireless communication method and a terminal device.
  • Embodiments of the present application provide a wireless communication method and terminal equipment capable of selecting an optimal airspace transmission filter between a transmitting terminal terminal and a receiving terminal terminal.
  • a wireless communication method includes:
  • the first terminal device sends M CSI-RSs to the second terminal device by using the airspace transmission filter, and the M CSI-RSs are used to select a target airspace transmission filter;
  • the M CSI-RSs correspond to multiple CSI-RS resources in the target CSI-RS resource set, and M is a positive integer.
  • a wireless communication method in a second aspect, includes:
  • the second terminal device receives M CSI-RSs sent by the first terminal device using a spatial transmission filter, where the M CSI-RSs are used to select a target spatial transmission filter, and the M CSI-RSs correspond to the target CSI-RS Multiple CSI-RS resources in the resource set, M is a positive integer.
  • a terminal device configured to execute the method in the first aspect above.
  • the terminal device includes a functional module for executing the method in the first aspect above.
  • a terminal device configured to execute the method in the second aspect above.
  • the terminal device includes a functional module for executing the method in the second aspect above.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect above.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect above.
  • an apparatus for implementing the method in any one of the first aspect to the second aspect above.
  • the device includes: a processor, configured to invoke and run a computer program from the memory, so that the device installed with the device executes the method in any one of the above first to second aspects.
  • a computer-readable storage medium for storing a computer program, and the computer program causes a computer to execute the method in any one of the above-mentioned first aspect to the second aspect.
  • a computer program product including computer program instructions, the computer program instructions causing a computer to execute the method in any one of the above first to second aspects.
  • a computer program which, when running on a computer, causes the computer to execute the method in any one of the above first to second aspects.
  • FIG. 1 is a schematic diagram of a communication system architecture applied in an embodiment of the present application.
  • Fig. 2 is a schematic diagram of another communication system architecture applied in the embodiment of the present application.
  • Fig. 3 is a schematic diagram of uplink communication within a network coverage provided by the present application.
  • Fig. 4 is a schematic diagram of partial network coverage side communication provided by the present application.
  • Fig. 5 is a schematic diagram of outbound communication provided by the network coverage provided by the present application.
  • Fig. 6 is a schematic diagram of a side communication with a central control node provided by the present application.
  • Fig. 7 is a schematic diagram of unicast sidelink communication provided by the present application.
  • Fig. 8 is a schematic diagram of multicast sideline communication provided by the present application.
  • Fig. 9 is a schematic diagram of broadcast sideline communication provided by the present application.
  • Fig. 10 is a schematic diagram of a time slot structure in NR-V2X provided by the present application.
  • Fig. 11 is a schematic diagram of not using analog beams and using analog beams according to the present application.
  • FIG. 12 is a schematic diagram of a TCI state for configuring a PDSCH provided by the present application.
  • Fig. 13 is a schematic flowchart of a wireless communication method provided according to an embodiment of the present application.
  • Fig. 14 is a schematic diagram of a spatial domain transmission filter provided according to an embodiment of the present application.
  • Fig. 15 is a schematic diagram of sending a CSI-RS using a spatial domain sending filter according to an embodiment of the present application.
  • 16 to 21 are respectively schematic diagrams of contents included in the first information provided according to the embodiments of the present application.
  • FIG. 22 is a schematic diagram of a MAC CE carrying first information according to an embodiment of the present application.
  • FIG. 23 is a schematic diagram of another MAC CE carrying first information according to an embodiment of the present application.
  • Fig. 24 is a schematic flowchart of determining an optimal spatial domain transmission filter according to an embodiment of the present application.
  • Fig. 25 is a schematic block diagram of a terminal device provided according to an embodiment of the present application.
  • Fig. 26 is a schematic block diagram of another terminal device provided according to an embodiment of the present application.
  • Fig. 27 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • Fig. 28 is a schematic block diagram of a device provided according to an embodiment of the present application.
  • Fig. 29 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
  • the technical solution of the embodiment of the present application can be applied to various communication systems, such as: Global System of Mobile communication (Global System of Mobile communication, GSM) system, code division multiple access (Code Division Multiple Access, CDMA) system, broadband code division multiple access (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced long term evolution (LTE-A) system , New Radio (NR) system, evolution system of NR system, LTE (LTE-based access to unlicensed spectrum, LTE-U) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) on unlicensed spectrum unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunications System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.
  • GSM Global System of Mobile
  • D2D Device to Device
  • M2M Machine to Machine
  • MTC Machine Type Communication
  • V2V Vehicle to Vehicle
  • V2X Vehicle to everything
  • the communication system in the embodiment of the present application may be applied to a carrier aggregation (Carrier Aggregation, CA) scenario, may also be applied to a dual connectivity (Dual Connectivity, DC) scenario, and may also be applied to an independent (Standalone, SA) deployment Web scene.
  • Carrier Aggregation, CA Carrier Aggregation
  • DC Dual Connectivity
  • SA independent deployment Web scene
  • the communication system in the embodiment of the present application may be applied to an unlicensed spectrum, where the unlicensed spectrum may also be considered as a shared spectrum; or, the communication system in the embodiment of the present application may also be applied to a licensed spectrum, where, Licensed spectrum can also be considered as non-shared spectrum.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, wherein the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • user equipment User Equipment, UE
  • access terminal user unit
  • user station mobile station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication device
  • wireless communication device user agent or user device
  • the terminal device can be a station (STATION, ST) in a WLAN, 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) devices, handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, wearable devices, next-generation communication systems such as terminal devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • PLMN Public Land Mobile Network
  • the terminal device can be deployed on land, including indoor or outdoor, handheld, wearable or vehicle-mounted; it can also be deployed on water (such as ships, etc.); it can also be deployed in the air (such as aircraft, balloons and satellites) superior).
  • the terminal device may be a mobile phone (Mobile Phone), a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • a virtual reality (Virtual Reality, VR) terminal device an augmented reality (Augmented Reality, AR) terminal Equipment
  • wireless terminal equipment in industrial control wireless terminal equipment in self driving
  • wireless terminal equipment in remote medical wireless terminal equipment in smart grid
  • wireless terminal equipment in transportation safety wireless terminal equipment in smart city, or wireless terminal equipment in smart home.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices, which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
  • a wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction.
  • Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets and smart jewelry for physical sign monitoring.
  • the network device may be a device for communicating with the mobile device, and the network device may be an access point (Access Point, AP) in WLAN, a base station (Base Transceiver Station, BTS) in GSM or CDMA , or a base station (NodeB, NB) in WCDMA, or an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device, and an NR network A network device or a base station (gNB) in a network device or a network device in a future evolved PLMN network or a network device in an NTN network.
  • AP Access Point
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • Evolutional Node B, eNB or eNodeB evolved base station
  • LTE Long Term Evolution
  • eNB evolved base station
  • gNB base station
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network equipment may be a satellite or a balloon station.
  • the satellite can be a low earth orbit (low earth orbit, LEO) satellite, a medium earth orbit (medium earth orbit, MEO) satellite, a geosynchronous earth orbit (geosynchronous earth orbit, GEO) satellite, a high elliptical orbit (High Elliptical Orbit, HEO) satellite. ) Satellite etc.
  • the network device may also be a base station installed on land, water, and other locations.
  • the network device may provide services for a cell, and the terminal device communicates with the network device through the transmission resources (for example, frequency domain resources, or spectrum resources) used by the cell, and the cell may be a network device ( For example, a cell corresponding to a base station), the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell), and the small cell here may include: a metro cell (Metro cell), a micro cell (Micro cell), a pico cell ( Pico cell), Femto cell, etc. These small cells have the characteristics of small coverage and low transmission power, and are suitable for providing high-speed data transmission services.
  • the transmission resources for example, frequency domain resources, or spectrum resources
  • the cell may be a network device (
  • the cell may belong to a macro base station, or may belong to a base station corresponding to a small cell (Small cell)
  • the small cell here may include: a metro cell (Metro cell), a micro cell (Micro
  • the "indication" mentioned in the embodiments of the present application may be a direct indication, may also be an indirect indication, and may also mean that there is an association relationship.
  • a indicates B which can mean that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • the term "corresponding" may indicate that there is a direct or indirect correspondence between the two, or that there is an association between the two, or that it indicates and is indicated, configuration and is configuration etc.
  • predefined or “preconfigured” can be realized by pre-saving corresponding codes, tables or other methods that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
  • the application does not limit its specific implementation.
  • pre-defined may refer to defined in the protocol.
  • the "protocol” may refer to a standard protocol in the communication field, for example, may include the LTE protocol, the NR protocol, and related protocols applied to future communication systems, which is not limited in the present application.
  • Fig. 1 is a schematic diagram of a communication system to which the embodiment of the present application is applicable.
  • the transmission resources of the vehicle-mounted terminals (vehicle-mounted terminal 121 and vehicle-mounted terminal 122 ) are allocated by the base station 110 , and the vehicle-mounted terminals transmit data on the sidelink according to the resources allocated by the base station 110 .
  • the base station 110 may allocate resources for a single transmission to the terminal, or may allocate resources for semi-static transmission to the terminal.
  • Fig. 2 is a schematic diagram of another communication system to which the embodiment of the present application is applicable.
  • the vehicle-mounted terminals (vehicle-mounted terminal 131 and vehicle-mounted terminal 132 ) autonomously select transmission resources on sidelink resources for data transmission.
  • the vehicle-mounted terminal may select transmission resources randomly, or select transmission resources by listening.
  • side communication according to the network coverage of the communicating terminal, it can be divided into network coverage inner communication, as shown in Figure 3; part of the network coverage side communication, as shown in Figure 4 ; and network coverage outer line communication, as shown in FIG. 5 .
  • Figure 3 In inline communication within the network coverage, all terminals performing sideline communication are within the coverage of the base station. Therefore, the above-mentioned terminals can perform sideline communication based on the same sideline configuration by receiving configuration signaling from the base station .
  • FIG 4 In the case of partial network coverage for sidelink communication, some terminals performing sidelink communication are located within the coverage of the base station. These terminals can receive configuration signaling from the base station and perform sidelink communication according to the configuration of the base station. However, terminals located outside the network coverage cannot receive the configuration signaling from the base station. In this case, the terminals outside the network coverage will use the pre-configuration information and the physical The information carried in the Physical Sidelink Broadcast Channel (PSBCH) determines the sidelink configuration for sidelink communication.
  • PSBCH Physical Sidelink Broadcast Channel
  • Figure 5 For outbound communication under network coverage, all terminals performing side communication are located outside the network coverage, and all terminals determine side communication according to pre-configuration information to perform side communication.
  • FIG. 6 For side communication with a central control node, multiple terminals form a communication group.
  • a central control node in the communication group which can also be called a cluster head terminal (Cluster Header, CH).
  • the central control node has the following One of the functions: responsible for the establishment of communication groups; joining and leaving of group members; performing resource coordination, allocating side transmission resources for other terminals, receiving side communication feedback information from other terminals; performing resource coordination with other communication groups, etc.
  • device-to-device communication is based on a sidelink (Sidelink, SL) transmission technology based on device to device (D2D), and the communication data in the traditional cellular system is received or sent through the base station.
  • the method is different.
  • the Internet of Vehicles system adopts the method of terminal-to-terminal direct communication, so it has higher spectral efficiency and lower transmission delay.
  • Two transmission modes are defined in 3GPP, which are respectively recorded as: the first mode (sidelink resource allocation mode 1) and the second mode (sidelink resource allocation mode 2).
  • the first mode the transmission resources of the terminal are allocated by the base station, and the terminal sends data on the sidelink according to the resources allocated by the base station; the base station can allocate resources for a single transmission to the terminal, and can also allocate semi-static transmission to the terminal H. As shown in FIG. 3 , the terminal is located within the coverage of the network, and the network allocates transmission resources for sidelink transmission to the terminal.
  • the second mode the terminal selects a resource from the resource pool for data transmission.
  • the terminal is located outside the coverage of the cell, and the terminal independently selects transmission resources from the pre-configured resource pool for sidelink transmission; or, as shown in Figure 3, the terminal independently selects transmission resources from the resource pool configured by the network Make sideways transfers.
  • New Radio-Vehicle to Everything NR-V2X
  • NR-V2X New Radio-Vehicle to Everything
  • it supports automatic driving, so it puts forward higher requirements for data interaction between vehicles, such as higher throughput, lower Latency, higher reliability, larger coverage, more flexible resource allocation, etc.
  • unicast transmission there is only one terminal at the receiving end, as shown in Figure 7, unicast transmission is performed between UE1 and UE2; for multicast transmission, the receiving end is all terminals in a communication group, or in a certain All terminals within the transmission distance, as shown in Figure 8, UE1, UE2, UE3, and UE4 form a communication group, in which UE1 sends data, and other terminal devices in the group are receiving end terminals; for broadcast transmission mode, its receiving The terminal is any terminal around the transmitting terminal. As shown in FIG. 9 , UE1 is the transmitting terminal, and other terminals around it, UE2-UE6 are all receiving terminals.
  • the time slot structure in NR-V2X is shown in Figure 10.
  • (a) in Figure 10 indicates that the time slot does not include the physical sidelink feedback channel (Physical Sidelink Feedback Channel, PSFCH) time slot structure; the diagram in Figure 10 ( b) shows the slot structure including PSFCH.
  • PSFCH Physical Sidelink Feedback Channel
  • the Physical Sidelink Control Channel starts from the second sidelink symbol of the time slot in the time domain and occupies 2 or 3 Orthogonal frequency division multiplexing (Orthogonal frequency- division multiplexing (OFDM) symbols can occupy ⁇ 10, 12 15, 20, 25 ⁇ physical resource blocks (physical resource blocks, PRBs) in the frequency domain.
  • Orthogonal frequency division multiplexing Orthogonal frequency division multiplexing (Orthogonal frequency- division multiplexing (OFDM) symbols can occupy ⁇ 10, 12 15, 20, 25 ⁇ physical resource blocks (physical resource blocks, PRBs) in the frequency domain.
  • OFDM Orthogonal frequency division multiplexing
  • the number of PRBs occupied by PSCCH must be less than or equal to the number of PRBs contained in a sub-channel in the resource pool , so as not to impose additional restrictions on PSSCH resource selection or allocation.
  • the PSSCH also starts from the second side row symbol of the time slot, the last time domain symbol in the time slot is a guard interval (Guard Period, GP) symbol, and the remaining symbols are mapped to the PSSCH.
  • the first side row symbol in this time slot is the repetition of the second side row symbol.
  • the receiving terminal uses the first side row symbol as an automatic gain control (AGC) symbol. Data is generally not used for data demodulation.
  • the PSSCH occupies M subchannels in the frequency domain, and each subchannel includes N consecutive PRBs. As shown in (a) in Figure 10.
  • the second-to-last and third-to-last symbols in the time slot are used for PSFCH channel transmission, and a time domain symbol before the PSFCH channel is used as a GP symbol, as shown in (b) in Figure 10 shown.
  • Design goals for NR or 5G systems include large-bandwidth communications in high-frequency bands, such as frequency bands above 6 GHz. When the operating frequency becomes higher, the path loss in the transmission process will increase, thereby affecting the coverage capability of the high-frequency system.
  • an effective technical solution is based on a massive antenna array (Massive MIMO) to form a shaped beam with greater gain, overcome propagation loss, and ensure system coverage.
  • Mass MIMO massive antenna array
  • the millimeter-wave antenna array due to the shorter wavelength, smaller antenna element spacing and smaller aperture, allows more physical antenna elements to be integrated in a limited-sized two-dimensional antenna array.
  • Due to the limited size of the millimeter-wave antenna array from Considering factors such as hardware complexity, cost overhead, and power consumption, digital beamforming cannot be used, but analog beamforming is usually used, which can reduce the complexity of device implementation while enhancing network coverage.
  • a cell uses a wider beam (beam) to cover the entire cell. Therefore, at each moment, the terminal equipment within the coverage of the cell has the opportunity to obtain the transmission resources allocated by the system.
  • NR/5G multi-beam (Multi-beam) system covers the entire cell through different beams, that is, each beam covers a small range, and the effect of multiple beams covering the entire cell is achieved through time sweeping (sweeping) .
  • Fig. 11 shows schematic diagrams of systems without beamforming and with beamforming.
  • (a) in Figure 11 is a traditional LTE and NR system without beamforming, and
  • (b) in Figure 11 is an NR system using beamforming:
  • the LTE/NR network side uses a wide beam to cover the entire cell, and users 1-5 can receive network signals at any time.
  • the network side in (b) in Figure 11 uses narrower beams (such as beams 1-4 in the figure), and uses different beams to cover different areas in the cell at different times, for example, at time 1,
  • the NR network side covers the area where user 1 is located through beam 1; at time 2, the NR network side covers the area where user 2 is located through beam 2; at time 3, the NR network side covers the area where user 3 and user 4 are located through beam 3; At time 4, the NR network side uses beam 4 to cover the area where user 5 is located.
  • Analog beamforming can be used not only for network-side devices, but also for terminals. At the same time, analog beamforming can not only be used for signal transmission (called transmit beam), but also can be used for signal reception (called receive beam).
  • SS block Synchronization Signal block
  • CSI-RS Channel State Information Reference Signal
  • the physical downlink control channel Physical Downlink Control Channel, PDCCH
  • the physical downlink shared channel Physical Downlink Shared Channel, PDSCH
  • omnidirectional antennas or near-omnidirectional antennas are used to receive signals sent by different downlink transmission beams of the base station.
  • corresponding beam indication information (beam indication) is needed to assist the terminal device to determine the related information of the transmitting beam on the network side, or the corresponding receiving beam related information on the terminal side.
  • the beam indication information does not directly indicate the beam itself, but through the quasi-co-located (QCL) assumption between signals (such as the QCL assumption of QCL type "QCL-TypeD") to give instructions.
  • QCL quasi-co-located
  • determining the statistical characteristics of receiving corresponding channels/signals is also based on the QCL quasi-co-location assumption.
  • the characteristics of the transmission environment corresponding to the data transmission can be used to improve the reception algorithm.
  • the statistical properties of the channel can be used to optimize the design and parameters of the channel estimator.
  • these characteristics corresponding to data transmission are represented by QCL status (QCL-Info).
  • TRP Transmission Reception Point
  • panel panel
  • beam beam
  • TCI Transmission Configuration Indicator
  • a TCI state can contain the following configurations:
  • TCI state identifier used to identify a TCI state
  • a QCL information contains the following information:
  • QCL type (type) configuration which can be one of QCL type A, QCL typeB, QCL typeC or QCL typeD;
  • QCL reference signal configuration including the cell identification (ID) where the reference signal is located, the bandwidth part (Band Width Part, BWP) identification (ID) and the identification of the reference signal (which can be a CSI-RS resource identification or a synchronization signal block (Synchronization Signal Block) , SSB) index).
  • the QCL type of at least one QCL information must be one of typeA, typeB, and typeC, and the QCL type of the other QCL information must be QCL type D.
  • 'QCL-TypeA' ⁇ Doppler shift (Doppler shift), Doppler spread (Doppler spread), average delay (average delay), delay spread (delay spread) ⁇ ;
  • 'QCL-TypeB' ⁇ Doppler shift (Doppler shift), Doppler spread (Doppler spread) ⁇ ;
  • 'QCL-TypeC' ⁇ Doppler shift (Doppler shift), average delay (average delay) ⁇ ;
  • the network side can indicate the corresponding TCI state for the downlink signal or downlink channel.
  • the terminal can assume that the target downlink signal is consistent with the reference
  • the large-scale parameters of the SSB or reference CSI-RS resources are the same, and the large-scale parameters are determined by the QCL type configuration.
  • the terminal can adopt and receive the reference SSB or reference CSI-RS resource.
  • the receiving beam that is, the Spatial Rx parameter
  • the target downlink channel (or downlink signal) and its reference SSB or reference CSI-RS resource are sent by the same TRP or the same panel or the same beam at the network side. If the transmission TRP or transmission panel or transmission beam of two downlink signals or downlink channels are different, different TCI states are usually configured.
  • control resource set (Control Resource Set, CORESET) TCI status.
  • the available TCI state set is indicated by RRC signaling, and some of the TCI states are activated by MAC layer signaling, and finally activated by the TCI state indication field in the downlink control information (Downlink Control Information, DCI)
  • DCI Downlink Control Information
  • One or two TCI states are indicated in the TCI state for the PDSCH scheduled by the DCI.
  • the case of two TCI states is mainly for scenarios where multiple TRPs are similar.
  • the network device indicates N candidate TCI states through RRC signaling, activates K TCI states through MAC signaling, and finally indicates 1 from the activated TCI states through the TCI state indication field in DCI One or two TCI states to use.
  • the present application proposes a solution for determining the optimal airspace transmission filter for lateral communication, which can determine the optimal airspace transmission filter between the transmitting end terminal and the receiving end terminal.
  • FIG. 13 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 13 , the wireless communication method 200 may include at least part of the following content:
  • the first terminal device sends M CSI-RSs to the second terminal device using the airspace transmission filter, and the M CSI-RSs are used to select the target airspace transmission filter; wherein, the M CSI-RSs correspond to the target CSI-RS Multiple CSI-RS resources in the RS resource set, M is a positive integer;
  • the second terminal device receives the M CSI-RSs transmitted by the first terminal device using a spatial domain transmission filter.
  • the second terminal device measures the received CSI-RS and obtains the measurement result, and the second terminal device can feed back the CSI-RS resource according to the measurement result, so that the first terminal device can Select the target airspace send filter.
  • the millimeter wave frequency band is used in the sidelink transmission system.
  • Line transmission In order to increase the transmission rate of the sidelink communication system, the millimeter wave frequency band is used in the sidelink transmission system.
  • the first terminal device is a sending end device
  • the second terminal device is a receiving end device
  • the CSI-RSs in the M CSI-RSs are side row CSI-RSs.
  • the M CSI-RSs may also be replaced by other sidelink signals, that is, in the above S210, the first terminal device may send M sidelink signals to the second terminal device using an airspace transmission filter , wherein the M side-going signals are used to select a target airspace transmit filter.
  • the side signals in the M side signals include but are not limited to one of the following:
  • CSI-RS demodulation reference signal
  • DMRS demodulation Reference Signal
  • PSCCH DMRS PSSCH DMRS
  • positioning reference signal positioning reference signals
  • PRS positioning reference signals
  • phase tracking reference signal Phase Tracking Reference Signal
  • PT-RS Phase Tracking Reference Signal
  • sidewalk Synchronization signals including side-line primary synchronization signals and/or side-line secondary synchronization signals.
  • sending M CSI-RSs may also be expressed as “sending M CSI-RS resources", which is not limited in this application.
  • a spatial domain transmission filter may also be referred to as a transmission beam, a spatial relation, or a spatial setting.
  • the spatial domain transmit filter and the spatial domain receive filter are collectively referred to as a spatial domain filter
  • the spatial domain transmit filter may also be referred to as a transmitting end spatial domain filter
  • the spatial domain receiving filter may also be referred to as a receiving end spatial domain filter or a receiving end spatial domain filter. beam.
  • the receiving end uses the same spatial domain reception filter (spatial domain reception filter) to receive the M CSI-RSs sent by the transmitting end.
  • each CSI-RS in the M CSI-RS corresponds to a CSI-RS resource in the target CSI-RS resource set
  • the M CSI-RS corresponds to the target CSI-RS resource set
  • the multiple CSI-RS resources in may refer to: the CSI-RS resources corresponding to the M CSI-RS are different in pairs, that is, the M CSI-RS and multiple CSI-RS resources are in one-to-one correspondence; or, the Among the M CSI-RSs, there are at least two CSI-RSs corresponding to different CSI-RS resources. That is, the first terminal device transmits at least two CSI-RS resources by using the spatial domain transmission filter.
  • the first terminal device sending the M CSI-RSs to the second terminal device using a spatial domain transmission filter may refer to: the first terminal device transmits the M CSI-RSs using different spatial domain transmission filters, For example, the M CSI-RSs correspond to different transmission beams respectively; or, the first terminal device does not use the same spatial domain transmission filter to transmit the M CSI-RSs, for example, the M CSI-RSs are transmitted using at least two different transmit beams.
  • the above S210 may specifically include:
  • the first terminal device sends M CSI-RSs to the second terminal device by using the M spatial transmission filters, where each spatial transmission filter corresponds to one CSI-RS.
  • the above S210 may specifically include:
  • the first terminal device transmits M CSI-RSs to the second terminal device using K spatial transmission filters, where K is less than M and K is greater than 1, that is, there are at least two CSI-RSs among the M CSI-RSs are transmitted through different spatial domain transmit filters.
  • the terminal device may use a beam for sidelink data transmission.
  • the transmitting terminal may determine a transmitting beam suitable for the receiving terminal to improve sidelink transmission performance.
  • the first terminal device when used as the transmitting terminal, it can transmit the side-going reference signal through different transmitting beams.
  • the receiving-end terminal can measure the side-going reference signal sent by the transmitting terminal, and select the optimal measurement result corresponding to The optimal transmission beam is further fed back to the transmitting terminal, so that the transmitting terminal performs subsequent sidelink transmission according to the optimal transmitting beam fed back by the receiving terminal, thereby improving transmission performance.
  • there is a corresponding relationship between the transmission beam and the reference signal resource The receiving end selects the transmission beam corresponding to the optimal measurement result, and feeds back the reference signal resource information corresponding to the transmission beam to the transmitting end. The resource information and the corresponding relationship can determine the optimal transmission beam.
  • the corresponding repetition (repetition) field in the configuration information of the target CSI-RS resource set takes a first value, where the first value is used to indicate that the first terminal device does not use the same airspace transmission filter
  • the device transmits the CSI-RS resources in the target CSI-RS resource set, in other words, the first value is used to instruct the first terminal device to use different spatial domain transmission filters to transmit the CSI-RS resources in the target CSI-RS resource set resource.
  • the first value may be off (off), indicating that the first terminal device transmits the M CSI-RSs for selecting a target airspace transmission filter.
  • the first terminal device uses M different spatial domain transmission filters to transmit M CSI-RS resources, that is, different CSI-RS resources correspond to different spatial domain filters.
  • the first terminal device uses M1 different spatial domain transmission filters to transmit M CSI-RS resources, where M1 ⁇ M; that is, the same spatial domain transmission filter can be used to transmit different CSI-RS resources.
  • the M CSI-RS resources correspond to M CSI-RS resources in the CSI-RS resource set, further, the M CSI-RS are different CSI-RS resources;
  • the M CSI-RS resources correspond to M2 CSI-RS resources in the CSI-RS resource set, M2 ⁇ M; further, the M CSI-RS may include the same CSI-RS resources .
  • the first terminal device receives the first information sent by the second terminal device
  • the first information includes a target channel state information (Channel State Information, CSI) report quantity (reportQuantity), and the target CSI report quantity includes at least one of the following:
  • CSI-RS Resource Indicator CRI
  • CRI and Reference Signal Received Power Reference Signal Received Power
  • RSRP Reference Signal Received Power
  • 'CRI-RSRP' CRI and Signal to Interference plus Noise Ratio ,SINR
  • the CRI may be an index of a CSI-RS resource, that is, when the target CSI reporting amount includes CRI, the second terminal device may only feed back the index of a CSI-RS resource; in the target CSI When the reported amount includes CRI-RSRP, the second terminal device may feed back the CSI-RS resource index and RSRP; when the target CSI reported amount includes CRI-SINR, the second terminal device may feed back CSI-RS The index and SINR of the resource.
  • the target CSI reporting amount may be determined by the second terminal device according to a measurement result obtained by measuring the received CSI-RS.
  • the measurement results (including RSRP and/or SINR) in this application are obtained based on the measurement of CSI-RS.
  • the measurement result is obtained based on the measurement of PSCCH DRMS, PSSCH DMRS or sideline PT-RS.
  • the CSI-RS sent by the sender is carried in the PSSCH, that is, the CSI-RS is mapped in the resources of the PSSCH, the PSSCH is scheduled through the SCI, and the transmission of the CSI-RS is indicated.
  • the receiver can perform measurements based on PSCCH DMRS or PSSCH DMRS. That is, the CSI-RS resources may also be determined based on the measurement results of the PSCCH DMRS or PSSCH DMRS associated with the CSI-RS.
  • the sending end indicates to send the CSI-RS through the indication information
  • the receiving end measures the PSCCH DMRS or PSSCH DMRS associated with the CSI-RS
  • the measurement result is PSCCH-RSRP or PSSCH-RSRP, based on the measurement result Determine the CSI-RS resource, and send the CSI-RS resource index, or the CSI-RS resource index and its associated measurement results (ie, PSCCH-RSRP or PSSCH-RSRP) to the sender to assist the sender in selecting the airspace transmission filter device.
  • the measurement results obtained based on CSI-RS are taken as an example for illustration, and the embodiments of the present invention are also applicable to the measurement results obtained based on PSCCH DMRS or PSSCH DMRS Condition.
  • the first information includes indexes of N CSI-RS resources, or, the first information is used to determine indexes of N CSI-RS resources, and the N CSI-RS resources are the indexes of the second terminal Determined by the device according to the measurement result obtained by measuring the received CSI-RS, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N is a positive integer, and N ⁇ M.
  • the second terminal device since the first terminal device uses different spatial domain transmission filters to send CSI-RS in turn, and the second terminal device cannot accurately know the resource location where the first terminal device sends the CSI-RS, the second terminal device It can only blindly detect whether the first terminal device has sent CSI-RS.
  • the first terminal device uses different airspace transmission filters to send CSI-RS, some airspace transmission filters are not aligned with the second terminal device. Therefore , it may cause the second terminal device to fail to detect all the CSI-RS sent by the first terminal device, but only to detect a part of the CSI-RS. Therefore, the second terminal device may send an indication message to the first terminal device, Used to indicate the number of CSI-RS resource information (or CSI-RS resource indexes) fed back by the second terminal device.
  • the first terminal device uses four spatial transmission filters (spatial transmission filter 0 to spatial transmission filter 3) to transmit CSI-RS respectively, and the first terminal device transmits CSI-RS in time slot 0 to
  • the second terminal device sends an indication message, which is used to indicate that the first terminal device will use different airspace transmission filters to send CSI-RS in turn, and indicates that the delay boundary is 10 time slots, that is, the second terminal device After 10, the CSI-RS resource index and corresponding measurement results are fed back to the first terminal device, which also means that the first terminal device will send the CSI-RS resource in turn before time slot 10.
  • the first terminal device selects resources through mode 2 (mode 2) (that is, the above-mentioned second mode), it cannot be guaranteed that the first terminal device has periodic transmission resources to transmit CSI-RS, as shown in FIG. 15 , the first terminal The device selects four time slots such as time slot 3/5/6/8 to send CSI-RS respectively with different airspace transmission filters, and different time slots use different airspace transmission filters.
  • the second terminal device detects the SCI sent by the first terminal device in the resource pool, and determines whether the first terminal device sends the CSI-RS. Due to factors such as channel quality, half-duplex limitation, and whether the direction of the airspace transmit filter is aligned, the second terminal device can only receive the CSI-RS sent by the airspace transmit filter 1 and the airspace transmit filter 2. Therefore, the first The second terminal device feeds back at most two CSI-RS resource indexes and corresponding measurement results.
  • the second terminal device may select one or two CSI-RS resources to feed back to the first terminal device.
  • the indexes of the N CSI-RS resources are arranged according to the order of the measurement results corresponding to the N CSI-RS resources from high to low, or, the indexes of the N CSI-RS resources are arranged according to the order of the N CSI-RS resources
  • the measurement results corresponding to the CSI-RS resources are arranged in descending order.
  • the second terminal device may also only feed back CSI-RS resource information, and at this time, the fed back CSI-RS resource information is arranged in descending order of measurement results.
  • N 3, that is, three CSI-RS resource information needs to be fed back, namely CSI-RS resource 1, CSI-RS resource 2, and CSI-RS resource 3, and the corresponding RSRP measurement results are -30dBm and -10dBm respectively , -20dBm, the feedback CSI-RS resource information is shown in Figure 16, that is, the CSI-RS resource with the best measurement result is at the top, followed by the CSI-RS resource with the suboptimal measurement result, and so on. It may also be that the CSI-RS resource with the best measurement result is last, followed by the CSI-RS resource with the second best measurement result, and so on, as shown in FIG. 17 .
  • the first information further includes first measurement information, and the first measurement information is used to indicate measurement results corresponding to the N CSI-RS resources.
  • the second terminal device feeds back indices of N CSI-RS resources and corresponding measurement results.
  • the first terminal device when the first terminal device needs to switch the spatial domain transmission filter, it can quickly select and switch from the N spatial domain transmission filters corresponding to the N CSI-RS resources fed back by the second terminal device, and There is no need for the first terminal device to perform the process of selecting the optimal spatial domain transmission filter again.
  • the sender needs to re-determine the optimal Spatial send filter. If the receiving end only feeds back one CSI-RS resource, when the link fails, the transmitting end needs to re-select the optimal spatial domain transmission filter process, so as to re-determine a new optimal spatial domain transmission filter. If the receiving end feeds back N CSI-RS resources, when the spatial transmission filter selected by the transmitting end fails, one can be selected from the spatial transmission filters corresponding to the remaining N-1 CSI-RS resources fed back by the receiving end.
  • the transmitting end can have a higher probability to select a spatial domain transmitting filter to transmit sidelink data to multiple receiving ends at the same time.
  • the transmitter supports 4 airspace transmit filters, corresponding to airspace transmit filters 0-3 respectively. If receiver 1 only feeds back one preferred airspace transmit filter, such as airspace transmit filter 0, receiver 2 feeds back a preferred airspace transmit filter.
  • the sending end cannot simultaneously send sidelink data (the sidelink data is sidelink feedback information) to two receiving ends at the same time.
  • receiver 1 feeds back two preferred spatial domain transmit filters, such as spatial domain transmit filters 0 and 1
  • receiver 2 feeds back two preferred spatial domain transmit filters, such as spatial domain transmit filters 1 and 2
  • the transmitter can use the spatial domain Transmit filter 1 simultaneously transmits sideline data to two receiving ends.
  • the measurement results corresponding to the N CSI-RS resources are greater than or equal to the first threshold.
  • the first threshold value is pre-configured or agreed by the protocol, or the first threshold value is configured by the network device, or the first threshold value is configured by the first terminal device .
  • the N CSI-RS resources correspond to the first N CSI-RSs arranged in descending order of the measurement results of the CSI-RSs received by the second terminal device.
  • the N CSI-RS resources include N1 first-type CSI-RS resources and N2 second-type CSI-RS resources;
  • the N1 first-type CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N1 first-type CSI-RS resources correspond to the CSI-RS received and measured by the second terminal device
  • the result is greater than or equal to the CSI-RS of the first threshold value
  • the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the N1 first-type CSI-RS resources
  • the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the CSI-RS resources other than the N1 second-type CSI-RS resources among the multiple CSI-RS resources
  • the first terminal device when the first terminal device receives the feedback information (that is, the first information) from the second terminal device, it can be determined according to the default value that its corresponding CSI-RS resource index is an invalid index.
  • the default value is pre-configured or agreed by the protocol, or the default value is configured by the network device, or the default value is configured for the second terminal device by the first terminal device , or, the default value is configured for the first terminal device by the second terminal device, or, the default value is configured for the third terminal device, and the third terminal device is the first terminal device and the second terminal device The group head terminal of the communication group where the second terminal device is located.
  • the group head terminal is a terminal that has at least one of the following functions in the communication group: resource management, resource allocation, resource coordination, resource configuration, and management of joining and leaving of group members.
  • the default value indicates the default measurement result when there is no measurement result.
  • the measurement result fed back by the receiving end to the sending end is the default value, it means that the receiving end has no CSI-RS resources corresponding to the default value. measurement results.
  • the default value is pre-configured or network device configuration, for example, the default value is included in resource pool configuration information or sidewalk bandwidth part (BWP) configuration information.
  • BWP sidewalk bandwidth part
  • the sender sends a message to the receiver (or the receiver Send PC5-RRC signaling to the sender), which carries the default value information.
  • the default value is less than or equal to the second threshold value, or the default value corresponds to negative infinity or infinity.
  • the second threshold value is pre-configured or agreed by the protocol, or the second threshold value is configured by the network device, or the second threshold value is configured by the first terminal device .
  • the default value may be less than or equal to the value corresponding to the lowest measurement result.
  • the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the N1 first-type CSI-RS resources, for example, select N1
  • the resource index corresponding to the CSI-RS resource with the best or worst measurement result in the first type of CSI-RS resource is used as the index of the N2 second type of CSI-RS resources.
  • N 3
  • the second terminal device In addition to feeding back the resource index corresponding to CSI-RS resource 1 and CSI-RS resource 2, the second terminal device The second terminal device also needs to feed back a CSI-RS resource index.
  • the second terminal device selects the CSI-RS with the best RSRP measurement result, that is, CSI-RS resource 1, and feeds back its CSI-RS resource index.
  • the second terminal arranges its corresponding CSI-RS resources in descending order of RSRP measurement results, so the order of the fed back CSI-RS resource indexes is shown in Figure 18 .
  • the three CSI-RS resource indexes fed back by the second terminal device there are two CSI-RS resource index values of 1 and one CSI-RS resource index value of 2.
  • the first terminal device receives the feedback information from the second terminal device, according to the repeated CSI-RS resource index 1, it can be determined that one of the CSI-RS index 1 (such as the second CSI-RS resource index 1) is a Invalid index.
  • the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource among the N1 first-type CSI-RS resources, specifically, for example, N1 is selected.
  • the resource index corresponding to the CSI-RS resource with the best or worst measurement result among the CSI-RS resources of the first type is used as the index of the N2 CSI-RS resources of the second type.
  • the second terminal device In addition to feeding back the resource index corresponding to CSI-RS resource 1 and CSI-RS resource 2, the second terminal device The second terminal device also needs to feed back two CSI-RS resource indexes. Since both CSI-RS resource 1 and CSI-RS resource 2 have measurement results, the second terminal device can repeatedly feed back CSI-RS resource 1 and CSI-RS resource 2.
  • the order of the fed back CSI-RS resource indexes is as shown in FIG. 19 .
  • the 4 CSI-RS resource indexes fed back by the second terminal device there are two CSI-RS resource index values of 1 and two CSI-RS resource index values of 2.
  • the first terminal device receives the feedback information from the second terminal device, it can determine one of the CSI-RS indexes (such as the second CSI-RS resource index 1 and the second CSI-RS resource index 1) according to the repeated CSI-RS resource indexes.
  • -RS resource index 2 is an invalid index.
  • the second terminal device when the number of CSI-RS resources meeting the conditions detected by the second terminal device is N1 (N1 ⁇ N), the second terminal device feeds back N CSI-RS resource information and N measurement results , which includes N1 pieces of CSI-RS resource information satisfying the conditions and their corresponding measurement results, and other (N-N1) pieces of CSI-RS resource information, and their corresponding measurement results are default values.
  • the CSI-RS resources that meet the conditions include the following two situations:
  • the CSI-RS resource meeting the condition includes the CSI-RS resource detected by the second terminal device. That is, the second terminal device will detect the SCI sent by the first terminal device. If the SCI is detected, the resource information of the CSI-RS sent by the first terminal device can be determined through the SCI. Therefore, the second terminal device can use the CSI -RS to measure and obtain corresponding measurement results.
  • the CSI-RS resource meeting the condition includes the CSI-RS resource detected by the second terminal device, and the measurement result thereof exceeds the first threshold. That is, the second terminal device will feed back the CSI-RS resource information only when the second terminal device detects the CSI-RS resource and the measurement result exceeds the first threshold.
  • the fed back CSI-RS resource information includes CSI-RS resource 1 and CSI-RS resource 2, and CSI-RS resource 3 is not fed back.
  • the second terminal device may select any CSI-RS resource (except the CSI-RS resource meeting the condition) to associate with the default value.
  • the second terminal device randomly selects one of the CSI-RS resources 0/1/3 and feeds back its index value, and its corresponding measurement result is set as a default value.
  • the second terminal device selects CSI-RS resource 0 sets its measurement result as a default value, and feeds it back to the first terminal device, as shown in FIG. 20 .
  • the second terminal equipment from N1 Select a CSI-RS resource from the CSI-RS resources that meet the conditions, and set its measurement result as the default value. For example, the CSI-RS with the best or worst measurement result is selected from the N1 CSI-RS resources, or a CSI-RS is selected arbitrarily or randomly.
  • two CSI-RS such as CSI-RS resource 1 and CSI-RS -RS resource 2
  • the RSRP threshold is -80dBm
  • the measurement result is -10dBm and the default value, as shown in Figure 21.
  • the first measurement information includes quantization index information of measurement results respectively corresponding to the N CSI-RS resources.
  • the index of the N CSI-RS resources and the number of bits occupied by the quantization index information of the measurement results corresponding to the N CSI-RS resources are:
  • A represents the number of bits occupied by one CSI-RS resource index among the N CSI-RS resource indexes
  • B represents the quantization index of the measurement result corresponding to one CSI-RS resource among the N CSI-RS resource indexes the number of bits occupied by the information
  • the first measurement information includes quantization index information of the first measurement result and N-1 differential quantization index information, where the first measurement result corresponds to the measurement results corresponding to the N CSI-RS resources highest value.
  • the index of the N CSI-RS resources and the number of bits occupied by the quantization index information of the measurement results corresponding to the N CSI-RS resources are:
  • A represents the number of bits occupied by the index of one CSI-RS resource among the indexes of the N CSI-RS resources
  • B represents the number of bits occupied by the quantized index information of the first CSI-RS resource among the N CSI-RS resources.
  • the number of bits, and the measurement result corresponding to the first CSI-RS resource is the CSI-RS resource with the largest corresponding measurement result among the N CSI-RS resources, and C represents other CSI-RS resources among the N CSI-RS resources The number of bits occupied by the quantization index information of the difference between the measurement result corresponding to the resource and the measurement result corresponding to the first CSI-RS resource, or, C represents the two adjacent CSI-RS resources corresponding to the measurement result The number of bits occupied by the quantization index information of the difference of the measurement result corresponding to the CSI-RS resource, and
  • the range of RSRP measurement results represented by B bits is [B1, B2]dBm, (such as [-140,-44]dBm), the step size is 1dBm, and the range represented by differential RSRP It is [C1,C2]dB (such as [-30,0]dB), and the step size is 2dB.
  • the differential RSRP is obtained relative to the maximum RSRP measurement result, that is, the difference between the differential RSRP representation and the maximum RSRP measurement result.
  • the differential RSRP is obtained relative to the measurement result of an RSRP adjacent to it and greater than it.
  • the maximum RSRP corresponds to -60dBm, and the remaining two differential RSRPs are -10dB and -30dB respectively;
  • the maximum RSRP corresponds to -60dBm, and the remaining two differential RSRPs are -10dB and -20dB respectively.
  • the second terminal device performs RSRP measurement according to CSI-RS, and feeds back the measurement result of RSRP.
  • the second terminal device usually uses Sidelink Control Information (Sidelink Control Information, SCI) or Media Access Control Control Element (Media Access Control Control Element, MAC CE) to carry the feedback CSI-RS resource information and corresponding measurement results. Therefore, it is necessary to quantify the RSRP measurement results.
  • SCI Sidelink Control Information
  • MAC CE Media Access Control Element
  • the second terminal device feeds back is the layer 1 RSRP measurement result (that is, L1 RSRP), that is, the RSRP result obtained by physical layer measurement is directly quantized and fed back to the first terminal device without going through layer 3 filtering.
  • 7 bits are used to quantize the measured RSRP, as shown in Table 1 below.
  • the range of quantized RSRP is [-140,44]dBm
  • the measurement results smaller than the minimum value (ie -140dBm) are represented by an RSRP index
  • the measurement result is represented by an RSRP index. Therefore, the default value can be defined to be less than or equal to the minimum value in the quantization range.
  • the default RSRP is -141dBm, which is smaller than the minimum quantization value; at this time, the quantized RSRP can be expressed as the following table.
  • the RSRP corresponding index fed back by the second terminal device to the first terminal device is RSRP_15
  • 7 bits are used to quantize the measured RSRP, as shown in Table 2 below.
  • the default RSRP setting is negative infinity (or a very small value, such as -1000dBm), or the default RSRP setting is infinity (or a very large value, such as 1000dBm); at this time, the quantized RSRP They can be expressed as the following Table 3-1 and Table 3-2 respectively.
  • the RSRP corresponding index fed back by the second terminal device to the first terminal device is RSRP_0 in Table 3-1 (or RSRP_127 in Table 3-2)
  • RSRP_16 RSRP ⁇ -140 dBm RSRP_17 -140 ⁇ RSRP ⁇ -139 dBm RSRP_18 -139 ⁇ RSRP ⁇ -138 dBm ... the ... RSRP_111 -46 ⁇ RSRP ⁇ -45 dBm RSRP_112 -45 ⁇ RSRP ⁇ -44 dBm RSRP_113 -44 ⁇ RSRP dBm RSRP_114 invalid dBm RSRP_115 invalid dBm RSRP_116 invalid dBm RSRP_117 invalid dBm RSRP_118 invalid dBm RSRP_119 invalid dBm RSRP_120 invalid dBm RSRP_121 invalid dBm RSRP_122 invalid dBm RSRP_123 invalid dBm RSRP_124 invalid dBm RSRP_125 invalid dBm RSRP_126 invalid dBm RSRP127 invalid dBm
  • the second terminal device When the above example is applicable to the N CSI-RSs fed back by the second terminal device and their measurement results, a corresponding RSRP result (such as a 7-bit quantization result) is fed back for each measurement result.
  • the second terminal device in order to reduce the overhead of feedback signaling, the second terminal device usually adopts a differential RSRP feedback manner for multiple RSRP measurement results.
  • the second terminal device when the second terminal device needs to feed back N CSI-RS resource information and their corresponding RSRP measurement results, for those with the best RSRP measurement results, the second terminal device feeds back its corresponding CSI-RS and corresponding RSRP measurement results
  • the result (such as the RSRP index after 7-bit quantization in Table 1 above), but for the other N-1 measurement results, the feedback differential RSRP is usually used.
  • the so-called differential RSRP can include two situations:
  • the first case the difference relative to the optimal RSRP result.
  • the corresponding differential RSRP index is "DIFFRSRP_12".
  • the second case that is, the difference with respect to its neighbor and the measurement result is greater than or equal to its RSRP measurement result.
  • a default value for differential RSRP may be defined.
  • the last differential RSRP index ie DIFFRSRP_15
  • DIFFRSRP_15 the last differential RSRP index
  • the first information includes indexes of N3 CSI-RS resources
  • the N3 CSI-RS resources are determined by the second terminal device according to the measurement results of the received CSI-RS measurements, N3 ⁇ N, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N3 and N are positive integers, and N ⁇ M.
  • the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device and the corresponding measurement result is greater than Or a CSI-RS equal to the first threshold.
  • the indexes of the N3 CSI-RS resources are arranged according to the order of the measurement results corresponding to the N3 CSI-RS resources from high to low, or, the indexes of the N3 CSI-RS resources are arranged according to the order of the N3 CSI-RS resources
  • the measurement results corresponding to the CSI-RS resources are arranged in descending order. For details, reference may be made to the relevant description about the quantization index information of the measurement results respectively corresponding to the N CSI-RS resources, which will not be repeated here.
  • the first information further includes second measurement information, where the second measurement information is used to indicate measurement results corresponding to the N3 CSI-RS resources.
  • the second measurement information includes quantization index information of measurement results respectively corresponding to the N3 CSI-RS resources.
  • quantization index information of the measurement results respectively corresponding to the N CSI-RS resources For details, reference may be made to the relevant description about the quantization index information of the measurement results respectively corresponding to the N CSI-RS resources, which will not be repeated here.
  • the second measurement information includes quantization index information of the second measurement result and N3-1 differential quantization index information, where the second measurement result corresponds to the measurement results corresponding to the N3 CSI-RS resources highest value.
  • quantization index information of the measurement results respectively corresponding to the N CSI-RS resources, which will not be repeated here.
  • the first information further includes first indication information, and the first indication information is used to indicate the value of N3.
  • the first information further includes second indication information, and the second indication information is used to indicate the value of N, or, the second indication information is used to indicate that the second terminal device sends the first terminal The number of CSI-RS resources fed back by the device, or the second indication information is used to indicate the number of measurement results fed back by the second terminal device to the first terminal device.
  • the first terminal device acquires third indication information, where the third indication information is used to indicate the value of N.
  • the first terminal device obtains the third indication information according to pre-configuration information; or, the first terminal device receives the third indication information sent by the network device; or, the first terminal device receives the third indication information The third indication information sent by the second terminal device; or, the first terminal device receives the third indication information sent by the third terminal device, where the third terminal device is where the first terminal device and the second terminal device are located The head terminal of the communication group.
  • the first terminal sends fourth indication information to the second terminal, where the fourth indication information is used to indicate the value of N.
  • the second terminal device acquires fourth indication information, where the fourth indication information is used to indicate the value of N.
  • the second terminal device acquires the fourth indication information according to preconfigured information; or, the second terminal device receives the fourth indication information sent by the network device; or, the second terminal device receives the fourth indication information The fourth indication information sent by a terminal device; or, the second terminal device receives the fourth indication information sent by a third terminal device, where the third terminal device is where the first terminal device and the second terminal device are located.
  • the head terminal of the communication group is where the third terminal device is where the first terminal device and the second terminal device are located.
  • the measurements include lateral RSRP and/or lateral SINR.
  • the first information is carried by one of the following:
  • SCI Sidelink Control Information
  • MAC CE Media Access Control Control Element
  • PSFCH Physical Sidelink Feedback Channel
  • PC5-RRC signaling PC5-RRC signaling.
  • an information field included in SCI, MAC CE or PC5-RRC is used to indicate the value of parameter N and/or N3.
  • the format of the MAC CE may be as shown in Figure 22 and/or Figure 23.
  • the MAC CE when the RSRP to be fed back is fed back its corresponding quantized RSRP index (as shown in Table 1), that is, when each RSRP is represented by 7 bits, the MAC CE includes N3 CSI-RS resource indexes and their corresponding The RSRP measurement result, and includes the information field indicating the value of N3.
  • N 3, that is, at most 3 CSI-RS resources and their corresponding measurement results are fed back, and the CSI-RS resource set includes 4 CSI-RS resources, so 2 bits are used to represent the CSI-RS index,
  • each Each RSRP measurement result is represented by 7 bits, so the order of each CSI-RS resource in the MAC CE may not be agreed upon.
  • Oct1 means byte 1, and so on.
  • the second terminal device may Sending indication information (that is, second information) to the first terminal device, used to indicate that the second terminal device has not received the CSI-RS, or used to instruct the first terminal device to resend the CSI-RS in turn.
  • the second terminal device may send the indication information (i.e. the second information) through SCI, MAC CE or PC5-RRC, when the indication information (i.e. the second information) is carried by the MAC CE, as shown in Figure 22 (d) shown.
  • the MAC CE includes N3 CSI-RS resource indexes and their corresponding RSRP measurement results.
  • N 3, that is, at most 3 CSI-RS resources and their corresponding measurement results are fed back, and the CSI-RS resource set includes 4 CSI-RS resources, so 2 bits are used to represent the CSI-RS index,
  • the CSI-RS resource corresponding to the measurement result, CSI-RS k2 indicates the CSI-RS resource corresponding to the second highest RSRP measurement result, and CSI-RS k3 indicates the CSI-RS resource corresponding to the third highest RSRP measurement result.
  • the second terminal device may Sending indication information (that is, second information) to the first terminal device, used to indicate that the second terminal device has not received the CSI-RS, or used to instruct the first terminal device to resend the CSI-RS in turn.
  • the second terminal device may send the indication information (i.e. the second information) through SCI, MAC CE or PC5-RRC, when the indication information (i.e. the second information) is carried by the MAC CE, as shown in Figure 23 (d) shown.
  • the first terminal device selects a target CSI-RS resource according to the first information, and the airspace transmission filter corresponding to the target CSI-RS resource is the target airspace transmission filter. Further, the first terminal device transmits sidelink data to the second terminal device by using the target airspace transmission filter. Correspondingly, the second terminal device receives the sidelink data sent by the first terminal device using the target airspace transmit filter corresponding to the target CSI-RS resource.
  • the first terminal device sends first side configuration information to the second terminal device, the first side configuration information is used to configure at least one transmission configuration indicator TCI state, and the at least one TCI state includes the first A TCI state, the reference signal included in the first TCI state is the CSI-RS corresponding to the target CSI-RS resource.
  • the quasi-co-site (QCL) type included in the first TCI state is QCL-TypeD.
  • the first terminal device sends fifth indication information to the second terminal device, where the fifth indication information is used to indicate the first TCI state.
  • the fifth indication information includes index information corresponding to the first TCI state.
  • the fifth indication information is carried by one of the following:
  • SCI Sidelink Control Information
  • Media Access Control Element Media Access Control Element
  • MAC CE Media Access Control Control Element
  • PC5-RRC signaling PC5-RRC signaling.
  • the first terminal device when the fifth indication information is carried by SCI or MAC CE, the first terminal device indicates activation of sidelink feedback.
  • the first terminal device receives the second information sent by the second terminal device; wherein,
  • the second information is used to indicate that the second terminal device has not detected the CSI-RS, or the second information is used to indicate that the second terminal device detects that the CSI-RS corresponding to the measurement results is lower than the first threshold value , or, the second information is used to instruct the first terminal device to resend the M CSI-RSs. Further, the first terminal device respectively sends the M CSI-RSs to the second terminal device by reusing the airspace transmission filter.
  • the second information is carried by one of the following:
  • a specific process for the first terminal device to determine the spatial domain transmission filter can be shown in FIG. 24.
  • the following steps S11 to S15 the following steps S11 to S15.
  • the first terminal device transmits M CSI-RSs respectively by using a spatial domain transmission filter.
  • the first terminal device uses M spatial domain transmission filters to transmit M CSI-RS resources respectively, and different spatial domain transmission filters correspond to different CSI-RS resources.
  • the first terminal device can determine the airspace transmission filter suitable for the first terminal device according to the correspondence between the airspace transmission filter and the CSI-RS resource.
  • the second terminal device measures the CSI-RS sent by the first terminal device, such as measuring RSRP or SINR, and selects N CSI-RS resources with optimal measurement results.
  • the second terminal device feeds back the optimal N CSI-RS resource information and corresponding measurement results to the first terminal device.
  • the first terminal device obtains the CSI-RS resource index and the RSRP measurement result sent by the second terminal device, selects a CSI-RS resource therefrom, and further, determines airspace transmission filter information corresponding to the CSI-RS resource. Preferably, the first terminal device selects the CSI-RS resource corresponding to the optimal measurement result.
  • the first terminal device uses the selected CSI-RS resource to determine its corresponding airspace transmission filter information, and uses the airspace transmission filter to perform sidelink transmission.
  • an optimal airspace transmission filter between the first terminal device and the second terminal device can be selected.
  • the first terminal device and the second terminal device exchange information, or obtain the number of CSI-RS resources to be fed back from network configuration information or pre-configuration information, when the number of CSI-RS resources detected by the second terminal device
  • the second terminal device sends indication information to the first terminal device, indicating the number of CSI-RS resources actually fed back by the second terminal device.
  • Fig. 25 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application.
  • the terminal device 300 is a first terminal device.
  • the terminal device 300 includes:
  • the communication unit 310 is configured to use the airspace transmission filter to send M channel state information reference signals CSI-RS to the second terminal device, and the M CSI-RS are used to select a target airspace transmission filter;
  • the M CSI-RSs correspond to multiple CSI-RS resources in the target CSI-RS resource set, and M is a positive integer.
  • the communication unit 310 is further configured to receive the first information sent by the second terminal device;
  • the first information includes a target CSI reporting amount
  • the target CSI reporting amount includes at least one of the following:
  • CSI-RS resource indication CRI, CRI and reference signal received power RSRP, CRI and received signal strength indication SINR.
  • the first information includes indexes of N CSI-RS resources, or, the first information is used to determine indexes of N CSI-RS resources, and the N CSI-RS resources are the indexes of the second terminal Determined by the device according to the measurement result obtained by measuring the received CSI-RS, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N is a positive integer, and N ⁇ M.
  • the indexes of the N CSI-RS resources are arranged according to the order of the measurement results corresponding to the N CSI-RS resources from high to low, or, the indexes of the N CSI-RS resources are arranged according to the order of the N CSI-RS resources
  • the measurement results corresponding to the CSI-RS resources are arranged in descending order.
  • the first information further includes first measurement information, and the first measurement information is used to indicate measurement results corresponding to the N CSI-RS resources.
  • the measurement results corresponding to the N CSI-RS resources are greater than or equal to a first threshold.
  • the N CSI-RS resources correspond to the first N CSI-RSs arranged in descending order of the measurement results of the CSI-RSs received by the second terminal device.
  • the N CSI-RS resources include N1 first-type CSI-RS resources and N2 second-type CSI-RS resources;
  • the N1 first-type CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N1 first-type CSI-RS resources correspond to the CSI-RS received and measured by the second terminal device
  • the result is greater than or equal to the CSI-RS of the first threshold value
  • the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the N1 first-type CSI-RS resources
  • the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the CSI-RS resources other than the N1 first-type CSI-RS resources among the multiple CSI-RS resources
  • the default value is pre-configured or agreed by the protocol, or the default value is configured by the network device, or the default value is configured for the second terminal device by the first terminal device , or, the default value is configured for the first terminal device by the second terminal device, or, the default value is configured for the third terminal device, and the third terminal device is the first terminal device and the second terminal device The group head terminal of the communication group where the second terminal device is located.
  • the default value is less than or equal to the second threshold value, or the default value corresponds to negative infinity or infinity.
  • the first measurement information includes quantization index information of measurement results respectively corresponding to the N CSI-RS resources.
  • the first measurement information includes quantization index information of the first measurement result and N-1 differential quantization index information, where the first measurement result corresponds to the measurement results corresponding to the N CSI-RS resources highest value.
  • the first information includes indexes of N3 CSI-RS resources
  • the N3 CSI-RS resources are determined by the second terminal device according to the measurement results of the received CSI-RS measurements, N3 ⁇ N, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N3 and N are positive integers, and N ⁇ M.
  • the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device and the corresponding measurement result is greater than Or a CSI-RS equal to the first threshold.
  • the indexes of the N3 CSI-RS resources are arranged according to the order of the measurement results corresponding to the N3 CSI-RS resources from high to low, or, the indexes of the N3 CSI-RS resources are arranged according to the order of the N3 CSI-RS resources
  • the measurement results corresponding to the CSI-RS resources are arranged in descending order.
  • the first information further includes second measurement information, where the second measurement information is used to indicate measurement results corresponding to the N3 CSI-RS resources.
  • the second measurement information includes quantization index information of measurement results respectively corresponding to the N3 CSI-RS resources.
  • the second measurement information includes quantization index information of the second measurement result and N3-1 differential quantization index information, where the second measurement result corresponds to the measurement results corresponding to the N3 CSI-RS resources highest value.
  • the first information further includes first indication information, and the first indication information is used to indicate the value of N3.
  • the first information further includes second indication information, and the second indication information is used to indicate the value of N, or, the second indication information is used to indicate that the second terminal device sends the first terminal The number of CSI-RS resources fed back by the device, or the second indication information is used to indicate the number of measurement results fed back by the second terminal device to the first terminal device.
  • the communication unit 310 is further configured to acquire third indication information, where the third indication information is used to indicate the value of N.
  • the communication unit 310 is specifically used for:
  • the third terminal device is the head terminal of the communication group in which the first terminal device and the second terminal device belong.
  • the communication unit 310 is further configured to send fourth indication information to the second terminal device, where the fourth indication information is used to indicate the value of N.
  • the measurements include lateral RSRP and/or lateral SINR.
  • the first information is carried by one of the following:
  • Sidelink control information SCI SCI, medium access control element MAC CE, sidelink feedback channel PSFCH, PC5-radio resource control RRC signaling.
  • the terminal device 300 further includes: a processing unit 320, wherein,
  • the processing unit 320 is configured to select a target CSI-RS resource according to the first information, and the spatial domain transmission filter corresponding to the target CSI-RS resource is the target spatial domain transmission filter.
  • the communication unit 310 is further configured to send first side configuration information to the second terminal device, where the first side configuration information is used to configure at least one transmission configuration indication TCI status, and the at least one TCI status A first TCI state is included, and a reference signal included in the first TCI state is a CSI-RS corresponding to the target CSI-RS resource.
  • the quasi-co-sited QCL type included in the first TCI state is QCL-TypeD.
  • the communication unit 310 is further configured to send fifth indication information to the second terminal device, where the fifth indication information is used to indicate the first TCI state.
  • the communication unit 310 is further configured to use the target airspace transmit filter to transmit sidelink data to the second terminal device.
  • the communication unit 310 is further configured to receive second information sent by the second terminal device; wherein,
  • the second information is used to indicate that the second terminal device has not detected the CSI-RS, or the second information is used to indicate that the second terminal device detects that the CSI-RS corresponding to the measurement results is lower than the first threshold value , or, the second information is used to instruct the first terminal device to resend the M CSI-RSs.
  • the communication unit 310 is further configured to reuse a spatial domain transmission filter to respectively transmit the M CSI-RSs to the second terminal device.
  • the first threshold value is pre-configured or agreed by the protocol, or the first threshold value is configured by the network device, or the first threshold value is configured by the first terminal device .
  • the second threshold value is pre-configured or agreed by the protocol, or the second threshold value is configured by the network device, or the second threshold value is configured by the first terminal device .
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • the aforementioned processing unit may be one or more processors.
  • terminal device 300 may correspond to the first terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 300 are respectively in order to realize the The corresponding process of the first terminal device in the method 200 is shown, and for the sake of brevity, details are not repeated here.
  • Fig. 26 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 is a second terminal device.
  • the terminal device 400 includes:
  • the communication unit 410 is configured to receive M channel state information reference signals CSI-RS sent by the first terminal device using a spatial domain transmission filter, wherein the M CSI-RS are used to select a target spatial domain transmission filter, and the M CSI -
  • the RS corresponds to multiple CSI-RS resources in the target CSI-RS resource set, and M is a positive integer.
  • the communication unit 410 is further configured to send first information to the first terminal device
  • the first information includes a target CSI reporting amount
  • the target CSI reporting amount includes at least one of the following:
  • CSI-RS resource indication CRI, CRI and reference signal received power RSRP, CRI and received signal strength indication SINR.
  • the first information includes indexes of N CSI-RS resources, or, the first information is used to determine indexes of N CSI-RS resources, and the N CSI-RS resources are the indexes of the second terminal Determined by the device according to the measurement result obtained by measuring the received CSI-RS, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N is a positive integer, and N ⁇ M.
  • the indexes of the N CSI-RS resources are arranged according to the order of the measurement results corresponding to the N CSI-RS resources from high to low, or, the indexes of the N CSI-RS resources are arranged according to the order of the N CSI-RS resources
  • the measurement results corresponding to the CSI-RS resources are arranged in descending order.
  • the first information further includes first measurement information, and the first measurement information is used to indicate measurement results corresponding to the N CSI-RS resources.
  • the measurement results corresponding to the N CSI-RS resources are greater than or equal to a first threshold.
  • the N CSI-RS resources correspond to the first N CSI-RSs arranged in descending order of the measurement results of the CSI-RSs received by the second terminal device.
  • the N CSI-RS resources include N1 first-type CSI-RS resources and N2 second-type CSI-RS resources;
  • the N1 first-type CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N1 first-type CSI-RS resources correspond to the CSI-RS received and measured by the second terminal device
  • the result is greater than or equal to the CSI-RS of the first threshold value
  • the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the N1 first-type CSI-RS resources
  • the index corresponding to the N2 second-type CSI-RS resources is determined by at least one CSI-RS resource in the CSI-RS resources other than the N1 first-type CSI-RS resources among the multiple CSI-RS resources
  • the default value is pre-configured or agreed by the protocol, or the default value is configured by the network device, or the default value is configured for the second terminal device by the first terminal device , or, the default value is configured for the first terminal device by the second terminal device, or, the default value is configured for the third terminal device, and the third terminal device is the first terminal device and the second terminal device The group head terminal of the communication group where the second terminal device is located.
  • the default value is less than or equal to the second threshold value, or the default value corresponds to negative infinity or infinity.
  • the first measurement information includes quantization index information of measurement results respectively corresponding to the N CSI-RS resources.
  • the first measurement information includes quantization index information of the first measurement result and N-1 differential quantization index information, where the first measurement result corresponds to the measurement results corresponding to the N CSI-RS resources highest value.
  • the first information includes indexes of N3 CSI-RS resources
  • the N3 CSI-RS resources are determined by the second terminal device according to the measurement results of the received CSI-RS measurements, N3 ⁇ N, N is the number of CSI-RS resources that the second terminal device needs to feed back or report, N3 and N are positive integers, and N ⁇ M.
  • the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device, or, the N3 CSI-RS resources correspond to the CSI-RS received by the second terminal device and the corresponding measurement result is greater than Or a CSI-RS equal to the first threshold.
  • the indexes of the N3 CSI-RS resources are arranged according to the order of the measurement results corresponding to the N3 CSI-RS resources from high to low, or, the indexes of the N3 CSI-RS resources are arranged according to the order of the N3 CSI-RS resources
  • the measurement results corresponding to the CSI-RS resources are arranged in descending order.
  • the first information further includes second measurement information, where the second measurement information is used to indicate measurement results corresponding to the N3 CSI-RS resources.
  • the second measurement information includes quantization index information of measurement results respectively corresponding to the N3 CSI-RS resources.
  • the second measurement information includes quantization index information of the second measurement result and N3-1 differential quantization index information, where the second measurement result corresponds to the measurement results corresponding to the N3 CSI-RS resources highest value.
  • the first information further includes first indication information, and the first indication information is used to indicate the value of N3.
  • the first information further includes second indication information, and the second indication information is used to indicate the value of N, or, the second indication information is used to indicate that the second terminal device sends the first terminal The number of CSI-RS resources fed back by the device, or the second indication information is used to indicate the number of measurement results fed back by the second terminal device to the first terminal device.
  • the communication unit 410 is further configured to acquire fourth indication information, where the fourth indication information is used to indicate the value of N.
  • the communication unit 410 is specifically used for:
  • the third terminal device is the head terminal of the communication group in which the first terminal device and the second terminal device belong.
  • the measurements include lateral RSRP and/or lateral SINR.
  • the first information is carried by one of the following:
  • Sidelink control information SCI SCI, medium access control element MAC CE, sidelink feedback channel PSFCH, PC5-radio resource control RRC signaling.
  • the communication unit 410 is further configured to receive first side configuration information sent by the first terminal device, where the first side configuration information is used to configure at least one transmission configuration indicator TCI state, and the at least one TCI
  • the state includes a first TCI state
  • the reference signal included in the first TCI state is a CSI-RS corresponding to a target CSI-RS resource
  • the target CSI-RS resource is determined by the first terminal device according to the first information
  • the spatial domain transmission filter corresponding to the target CSI-RS resource is the target spatial domain transmission filter.
  • the quasi-co-sited QCL type included in the first TCI state is QCL-TypeD.
  • the communication unit 410 is further configured to receive fifth indication information sent by the first terminal device, where the fifth indication information is used to indicate the first TCI state.
  • the communication unit 410 is further configured to receive sidelink data transmitted by the first terminal device using the target airspace transmit filter corresponding to the target CSI-RS resource.
  • the communication unit 410 is further configured to send second information to the first terminal device; wherein,
  • the second information is used to indicate that the second terminal device has not detected the CSI-RS, or the second information is used to indicate that the second terminal device detects that the CSI-RS corresponding to the measurement results is lower than the first threshold value , or, the second information is used to instruct the first terminal device to resend the M CSI-RSs.
  • the communication unit 410 is further configured to receive the M CSI-RSs resent by the first terminal device.
  • the first threshold value is pre-configured or agreed by the protocol, or the first threshold value is configured by the network device, or the first threshold value is configured by the first terminal device .
  • the second threshold value is pre-configured or agreed by the protocol, or the second threshold value is configured by the network device, or the second threshold value is configured by the first terminal device .
  • the above-mentioned communication unit may be a communication interface or a transceiver, or an input-output interface of a communication chip or a system-on-chip.
  • terminal device 400 may correspond to the second terminal device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the terminal device 400 are respectively in order to realize the The corresponding process of the second terminal device in the method 200 is shown, and for the sake of brevity, details are not repeated here.
  • FIG. 27 is a schematic structural diagram of a communication device 500 provided by an embodiment of the present application.
  • the communication device 500 shown in FIG. 27 includes a processor 510, and the processor 510 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the communication device 500 may further include a memory 520 .
  • the processor 510 can invoke and run a computer program from the memory 520, so as to implement the method in the embodiment of the present application.
  • the memory 520 may be an independent device independent of the processor 510 , or may be integrated in the processor 510 .
  • the communication device 500 may further include a transceiver 530, and the processor 510 may control the transceiver 530 to communicate with other devices, specifically, to send information or data to other devices, or Receive messages or data from other devices.
  • the transceiver 530 may include a transmitter and a receiver.
  • the transceiver 530 may further include antennas, and the number of antennas may be one or more.
  • the communication device 500 may specifically be the terminal device of the embodiment of the present application, and the communication device 500 may implement the corresponding processes implemented by the first terminal device in each method of the embodiment of the present application. For brevity, in This will not be repeated here.
  • the communication device 500 may specifically be the terminal device in the embodiment of the present application, and the communication device 500 may implement the corresponding process implemented by the second terminal device in each method of the embodiment of the present application. For the sake of brevity, in This will not be repeated here.
  • Fig. 28 is a schematic structural diagram of a device according to an embodiment of the present application.
  • the apparatus 600 shown in FIG. 28 includes a processor 610, and the processor 610 can call and run a computer program from a memory, so as to implement the method in the embodiment of the present application.
  • the device 600 may further include a memory 620 .
  • the processor 610 can invoke and run a computer program from the memory 620, so as to implement the method in the embodiment of the present application.
  • the memory 620 may be an independent device independent of the processor 610 , or may be integrated in the processor 610 .
  • the device 600 may further include an input interface 630 .
  • the processor 610 can control the input interface 630 to communicate with other devices or chips, specifically, can obtain information or data sent by other devices or chips.
  • the device 600 may further include an output interface 640 .
  • the processor 610 can control the output interface 640 to communicate with other devices or chips, specifically, can output information or data to other devices or chips.
  • the device can be applied to the terminal device in the embodiment of the present application, and the device can realize the corresponding process implemented by the first terminal device in each method of the embodiment of the present application, for the sake of brevity, no longer repeat.
  • the device can be applied to the terminal device in the embodiment of the present application, and the device can realize the corresponding process implemented by the second terminal device in each method of the embodiment of the present application, for the sake of brevity, no longer repeat.
  • the device mentioned in the embodiment of the present application may also be a chip.
  • it may be a system-on-a-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.
  • FIG. 29 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 29 , the communication system 700 includes a first terminal device 710 and a second terminal device 720 .
  • the first terminal device 710 can be used to realize the corresponding functions realized by the first terminal device in the above method
  • the second terminal device 720 can be used to realize the corresponding functions realized by the second terminal device in the above method , for the sake of brevity, it is not repeated here.
  • the processor in the embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above-mentioned method embodiments may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Program logic devices, discrete gate or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • a general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.
  • the steps of the method disclosed in connection with the embodiments of the present application may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, register.
  • the storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories.
  • the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash.
  • the volatile memory can be Random Access Memory (RAM), which acts as external cache memory.
  • RAM Static Random Access Memory
  • SRAM Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • Synchronous Dynamic Random Access Memory Synchronous Dynamic Random Access Memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM, DDR SDRAM enhanced synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM synchronous connection dynamic random access memory
  • Synchlink DRAM, SLDRAM Direct Memory Bus Random Access Memory
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. That is, the memory in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.
  • the embodiment of the present application also provides a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the first terminal device in the methods of the embodiments of the present application, in order It is concise and will not be repeated here.
  • the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the second terminal device in the methods of the embodiments of the present application, in order It is concise and will not be repeated here.
  • the embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the first terminal device in the methods of the embodiments of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the first terminal device in the methods of the embodiments of the present application.
  • the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the second terminal device in the methods of the embodiments of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the second terminal device in the methods of the embodiments of the present application.
  • the embodiment of the present application also provides a computer program.
  • the computer program can be applied to the terminal device in the embodiment of the present application.
  • the computer program executes the corresponding method implemented by the first terminal device in each method of the embodiment of the present application. For the sake of brevity, the process will not be repeated here.
  • the computer program can be applied to the terminal device in the embodiment of the present application.
  • the computer program executes the corresponding method implemented by the second terminal device in each method of the embodiment of the present application. For the sake of brevity, the process will not be repeated here.
  • the disclosed systems, devices and methods may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • the functions described above are realized in the form of software function units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

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Abstract

本申请实施例提供了一种无线通信的方法和终端设备,能够选取发送端终端和接收端终端之间的最优空域发送滤波器。该无线通信的方法,包括:第一终端设备使用空域发送滤波器向第二终端设备发送M个CSI-RS,该M个CSI-RS用于选取目标空域发送滤波器;其中,该M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。

Description

无线通信的方法和终端设备 技术领域
本申请实施例涉及通信领域,并且更具体地,涉及一种无线通信的方法和终端设备。
背景技术
为了提升侧行通信系统的传输速率,考虑在侧行传输系统中使用毫米波频段,而在侧行毫米波传输中,如何选取发送端终端和接收端终端之间的最优空域发送滤波器是需要解决的问题。
发明内容
本申请实施例提供了一种无线通信的方法和终端设备,能够选取发送端终端和接收端终端之间的最优空域发送滤波器。
第一方面,提供了一种无线通信的方法,该方法包括:
第一终端设备使用空域发送滤波器向第二终端设备发送M个CSI-RS,该M个CSI-RS用于选取目标空域发送滤波器;
其中,该M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
第二方面,提供了一种无线通信的方法,该方法包括:
第二终端设备接收第一终端设备使用空域发送滤波器发送的M个CSI-RS,其中,该M个CSI-RS用于选取目标空域发送滤波器,该M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
第三方面,提供了一种终端设备,用于执行上述第一方面中的方法。
具体地,该终端设备包括用于执行上述第一方面中的方法的功能模块。
第四方面,提供了一种终端设备,用于执行上述第二方面中的方法。
具体地,该终端设备包括用于执行上述第二方面中的方法的功能模块。
第五方面,提供了一种终端设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,执行上述第一方面中的方法。
第六方面,提供了一种终端设备,包括处理器和存储器。该存储器用于存储计算机程序,该处理器用于调用并运行该存储器中存储的计算机程序,执行上述第二方面中的方法。
第七方面,提供了一种装置,用于实现上述第一方面至第二方面中的任一方面中的方法。
具体地,该装置包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有该装置的设备执行如上述第一方面至第二方面中的任一方面中的方法。
第八方面,提供了一种计算机可读存储介质,用于存储计算机程序,该计算机程序使得计算机执行上述第一方面至第二方面中的任一方面中的方法。
第九方面,提供了一种计算机程序产品,包括计算机程序指令,所述计算机程序指令使得计算机执行上述第一方面至第二方面中的任一方面中的方法。
第十方面,提供了一种计算机程序,当其在计算机上运行时,使得计算机执行上述第一方面至第二方面中的任一方面中的方法。
通过上述技术方案,能够选取第一终端设备和第二终端设备之间的最优空域发送滤波器。
附图说明
图1是本申请实施例应用的一种通信系统架构的示意性图。
图2是本申请实施例应用的另一种通信系统架构的示意性图。
图3是本申请提供的一种网络覆盖范围内侧行通信的示意性图。
图4是本申请提供的一种部分网络覆盖侧行通信的示意性图。
图5是本申请提供的一种网络覆盖外侧行通信的示意性图。
图6是本申请提供的一种存在中央控制节点的侧行通信的示意性图。
图7是本申请提供的一种单播侧行通信的示意性图。
图8是本申请提供的一种组播侧行通信的示意性图。
图9是本申请提供的一种广播侧行通信的示意性图。
图10是本申请提供的一种NR-V2X中的时隙结构的示意性图。
图11是本申请提供的一种不使用模拟波束和使用模拟波束的示意性图。
图12是本申请提供的一种配置PDSCH的TCI状态的示意性图。
图13是根据本申请实施例提供的一种无线通信的方法的示意性流程图。
图14是根据本申请实施例提供的一种空域发送滤波器的示意性图。
图15是根据本申请实施例提供的一种使用空域发送滤波器发送CSI-RS的示意性图。
图16至21分别是根据本申请实施例提供的第一信息所包含的内容的示意性图。
图22是根据本申请实施例提供的一种MAC CE承载第一信息的示意性图。
图23是根据本申请实施例提供的另一种MAC CE承载第一信息的示意性图。
图24是根据本申请实施例提供的一种确定最优空域发送滤波器的示意性流程图。
图25是根据本申请实施例提供的一种终端设备的示意性框图。
图26是根据本申请实施例提供的另一种终端设备的示意性框图。
图27是根据本申请实施例提供的一种通信设备的示意性框图。
图28是根据本申请实施例提供的一种装置的示意性框图。
图29是根据本申请实施例提供的一种通信系统的示意性框图。
具体实施方式
下面将结合本申请实施例中的附图,对本申请实施例中的技术方案进行描述,显然,所描述的实施例是本申请一部分实施例,而不是全部的实施例。针对本申请中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本申请保护的范围。
本申请实施例的技术方案可以应用于各种通信系统,例如:全球移动通讯(Global System of Mobile communication,GSM)系统、码分多址(Code Division Multiple Access,CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access,WCDMA)系统、通用分组无线业务(General Packet Radio Service,GPRS)、长期演进(Long Term Evolution,LTE)系统、先进的长期演进(Advanced long term evolution,LTE-A)系统、新空口(New Radio,NR)系统、NR系统的演进系统、非授权频谱上的LTE(LTE-based access to unlicensed spectrum,LTE-U)系统、非授权频谱上的NR(NR-based access to unlicensed spectrum,NR-U)系统、非地面通信网络(Non-Terrestrial Networks,NTN)系统、通用移动通信系统(Universal Mobile Telecommunication System,UMTS)、无线局域网(Wireless Local Area Networks,WLAN)、无线保真(Wireless Fidelity,WiFi)、第五代通信(5th-Generation,5G)系统或其他通信系统等。
通常来说,传统的通信系统支持的连接数有限,也易于实现,然而,随着通信技术的发展,移动通信系统将不仅支持传统的通信,还将支持例如,设备到设备(Device to Device,D2D)通信,机器到机器(Machine to Machine,M2M)通信,机器类型通信(Machine Type Communication,MTC),车辆间(Vehicle to Vehicle,V2V)通信,或车联网(Vehicle to everything,V2X)通信等,本申请实施例也可以应用于这些通信系统。
可选地,本申请实施例中的通信系统可以应用于载波聚合(Carrier Aggregation,CA)场景,也可以应用于双连接(Dual Connectivity,DC)场景,还可以应用于独立(Standalone,SA)布网场景。
可选地,本申请实施例中的通信系统可以应用于非授权频谱,其中,非授权频谱也可以认为是共享频谱;或者,本申请实施例中的通信系统也可以应用于授权频谱,其中,授权频谱也可以认为是非共享频谱。
本申请实施例结合网络设备和终端设备描述了各个实施例,其中,终端设备也可以称为用户设备(User Equipment,UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置等。
终端设备可以是WLAN中的站点(STATION,ST),可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol,SIP)电话、无线本地环路(Wireless Local Loop,WLL)站、个人数字助理(Personal Digital Assistant,PDA)设备、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备、下一代通信系统例如NR网络中的终端设备,或者未来演进的公共陆地移动网络(Public Land Mobile Network,PLMN)网络中的终端设备等。
在本申请实施例中,终端设备可以部署在陆地上,包括室内或室外、手持、穿戴或车载;也可以部署在水面上(如轮船等);还可以部署在空中(例如飞机、气球和卫星上等)。
在本申请实施例中,终端设备可以是手机(Mobile Phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality,VR)终端设备、增强现实(Augmented Reality,AR)终端设备、工业控制(industrial control)中的无线终端设备、无人驾驶(self driving)中的无线终端设备、远程医疗(remote medical)中的无线终端设备、智能电网(smart grid)中的无线终端设备、运输安全(transportation safety)中的无线终端设备、智慧城市(smart city)中的无线终端设备或智慧家庭(smart home)中的无线终端设备等。
作为示例而非限定,在本申请实施例中,该终端设备还可以是可穿戴设备。可穿戴设备也可以称 为穿戴式智能设备,是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称,如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上,或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备,更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能,例如:智能手表或智能眼镜等,以及只专注于某一类应用功能,需要和其它设备如智能手机配合使用,如各类进行体征监测的智能手环、智能首饰等。
在本申请实施例中,网络设备可以是用于与移动设备通信的设备,网络设备可以是WLAN中的接入点(Access Point,AP),GSM或CDMA中的基站(Base Transceiver Station,BTS),也可以是WCDMA中的基站(NodeB,NB),还可以是LTE中的演进型基站(Evolutional Node B,eNB或eNodeB),或者中继站或接入点,或者车载设备、可穿戴设备以及NR网络中的网络设备或者基站(gNB)或者未来演进的PLMN网络中的网络设备或者NTN网络中的网络设备等。
作为示例而非限定,在本申请实施例中,网络设备可以具有移动特性,例如网络设备可以为移动的设备。可选地,网络设备可以为卫星、气球站。例如,卫星可以为低地球轨道(low earth orbit,LEO)卫星、中地球轨道(medium earth orbit,MEO)卫星、地球同步轨道(geostationary earth orbit,GEO)卫星、高椭圆轨道(High Elliptical Orbit,HEO)卫星等。可选地,网络设备还可以为设置在陆地、水域等位置的基站。
在本申请实施例中,网络设备可以为小区提供服务,终端设备通过该小区使用的传输资源(例如,频域资源,或者说,频谱资源)与网络设备进行通信,该小区可以是网络设备(例如基站)对应的小区,小区可以属于宏基站,也可以属于小小区(Small cell)对应的基站,这里的小小区可以包括:城市小区(Metro cell)、微小区(Micro cell)、微微小区(Pico cell)、毫微微小区(Femto cell)等,这些小小区具有覆盖范围小、发射功率低的特点,适用于提供高速率的数据传输服务。
应理解,本文中术语“系统”和“网络”在本文中常被可互换使用。本文中术语“和/或”,仅仅是一种描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B这三种情况。另外,本文中字符“/”,一般表示前后关联对象是一种“或”的关系。
本申请的实施方式部分使用的术语仅用于对本申请的具体实施例进行解释,而非旨在限定本申请。本申请的说明书和权利要求书及所述附图中的术语“第一”、“第二”、“第三”和“第四”等是用于区别不同对象,而不是用于描述特定顺序。此外,术语“包括”和“具有”以及它们任何变形,意图在于覆盖不排他的包含。
应理解,在本申请的实施例中提到的“指示”可以是直接指示,也可以是间接指示,还可以是表示具有关联关系。举例说明,A指示B,可以表示A直接指示B,例如B可以通过A获取;也可以表示A间接指示B,例如A指示C,B可以通过C获取;还可以表示A和B之间具有关联关系。
在本申请实施例的描述中,术语“对应”可表示两者之间具有直接对应或间接对应的关系,也可以表示两者之间具有关联关系,也可以是指示与被指示、配置与被配置等关系。
本申请实施例中,“预定义”或“预配置”可以通过在设备(例如,包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现,本申请对于其具体的实现方式不做限定。比如预定义可以是指协议中定义的。
本申请实施例中,所述“协议”可以指通信领域的标准协议,例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议,本申请对此不做限定。
为便于理解本申请实施例的技术方案,以下通过具体实施例详述本申请的技术方案。以下相关技术作为可选方案与本申请实施例的技术方案可以进行任意结合,其均属于本申请实施例的保护范围。本申请实施例包括以下内容中的至少部分内容。
图1是本申请实施例适用的一种通信系统的示意图。车载终端(车载终端121和车载终端122)的传输资源是由基站110分配的,车载终端根据基站110分配的资源在侧行链路上进行数据的发送。具体地,基站110可以为终端分配单次传输的资源,也可以为终端分配半静态传输的资源。
图2是本申请实施例适用的另一种通信系统的示意图。车载终端(车载终端131和车载终端132)在侧行链路的资源上自主选取传输资源进行数据传输。可选地,车载终端可以随机选取传输资源,或者通过侦听的方式选取传输资源。
需要说明的是,在侧行通信中,根据进行通信的终端所处的网络覆盖情况,可以分为网络覆盖内侧行通信,如图3所示;部分网络覆盖侧行通信,如图4所示;及网络覆盖外侧行通信,如图5所示。
图3:在网络覆盖内侧行通信中,所有进行侧行通信的终端均处于基站的覆盖范围内,从而,上述终端均可以通过接收基站的配置信令,基于相同的侧行配置进行侧行通信。
图4:在部分网络覆盖侧行通信情况下,部分进行侧行通信的终端位于基站的覆盖范围内,这部分终端能够接收到基站的配置信令,而且根据基站的配置进行侧行通信。而位于网络覆盖范围外的终端,无法接收基站的配置信令,在这种情况下,网络覆盖范围外的终端将根据预配置(pre-configuration)信息及位于网络覆盖范围内的终端发送的物理侧行广播信道(Physical Sidelink Broadcast Channel,PSBCH)中携带的信息确定侧行配置,进行侧行通信。
图5:对于网络覆盖外侧行通信,所有进行侧行通信的终端均位于网络覆盖范围外,所有终端均根据预配置(pre-configuration)信息确定侧行配置进行侧行通信。
图6:对于有中央控制节点的侧行通信,多个终端构成一个通信组,该通信组内具有中央控制节点,又可以称为组头终端(Cluster Header,CH),该中央控制节点具有以下功能之一:负责通信组的建立;组成员的加入、离开;进行资源协调,为其他终端分配侧行传输资源,接收其他终端的侧行反馈信息;与其他通信组进行资源协调等功能。
需要说明的是,设备到设备通信是基于终端到终端(Device to Device,D2D)的一种侧行链路(Sidelink,SL)传输技术,与传统的蜂窝系统中通信数据通过基站接收或者发送的方式不同,车联网系统采用终端到终端直接通信的方式,因此具有更高的频谱效率以及更低的传输时延。在3GPP定义了两种传输模式,分别记为:第一模式(sidelink resource allocation mode 1)和第二模式(sidelink resource allocation mode 2)。
第一模式:终端的传输资源是由基站分配的,终端根据基站分配的资源在侧行链路上进行数据的发送;基站可以为终端分配单次传输的资源,也可以为终端分配半静态传输的资源。如图3所示,终端位于网络覆盖范围内,网络为终端分配侧行传输使用的传输资源。
第二模式:终端在资源池中选取一个资源进行数据的传输。如图5所示,终端位于小区覆盖范围外,终端在预配置的资源池中自主选取传输资源进行侧行传输;或者,如图3所示,终端在网络配置的资源池中自主选取传输资源进行侧行传输。
在新空口-车辆到其他设备(New Radio-Vehicle to Everything,NR-V2X)中,支持自动驾驶,因此对车辆之间数据交互提出了更高的要求,如更高的吞吐量、更低的时延、更高的可靠性、更大的覆盖范围、更灵活的资源分配等。
在LTE-V2X中,支持广播传输方式,在NR-V2X中,引入了单播和组播的传输方式。对于单播传输,其接收端终端只有一个终端,如图7所示,UE1、UE2之间进行单播传输;对于组播传输,其接收端是一个通信组内的所有终端,或者是在一定传输距离内的所有终端,如图8所示,UE1、UE2、UE3和UE4构成一个通信组,其中UE1发送数据,该组内的其他终端设备都是接收端终端;对于广播传输方式,其接收端是发送端终端周围的任意一个终端,如图9所示,UE1是发送端终端,其周围的其他终端,UE2-UE6都是接收端终端。
为便于更好的理解本申请实施例,对本申请相关的NR-V2X系统帧结构进行说明。
NR-V2X中的时隙结构图10所示,图10中的(a)表示时隙中不包括物理侧行反馈信道(Physical Sidelink Feedback Channel,PSFCH)的时隙结构;图10中的图(b)表示包括PSFCH的时隙结构。
NR-V2X中物理侧行控制信道(Physical Sidelink Control Channel,PSCCH)在时域上从该时隙的第二个侧行符号开始,占用2个或3个正交频分复用(Orthogonal frequency-division multiplexing,OFDM)符号,在频域上可以占用{10,12 15,20,25}个物理资源块(physical resource block,PRB)。为了降低UE对PSCCH的盲检测的复杂度,在一个资源池内只允许配置一个PSCCH符号个数和PRB个数。另外,因为子信道为NR-V2X中物理侧行共享信道(Physical Sidelink Shared Channel,PSSCH)资源分配的最小粒度,PSCCH占用的PRB个数必须小于或等于资源池内一个子信道中包含的PRB个数,以免对PSSCH资源选择或分配造成额外的限制。PSSCH在时域上也是从该时隙的第二个侧行符号开始,该时隙中的最后一个时域符号为保护间隔(Guard Period,GP)符号,其余符号映射PSSCH。该时隙中的第一个侧行符号是第二个侧行符号的重复,通常接收端终端将第一个侧行符号用作自动增益控制(Auto gain control,AGC)符号,该符号上的数据通常不用于数据解调。PSSCH在频域上占据M个子信道,每个子信道包括N个连续的PRB。如图10中的(a)所示。
当时隙中包含PSFCH信道时,该时隙中倒数第二个和倒数第三个符号用作PSFCH信道传输,在PSFCH信道之前的一个时域符号用作GP符号,如图10中的(b)所示。
为便于更好的理解本申请实施例,对本申请相关的多波束系统进行说明。
NR或5G系统的设计目标包括高频段(例如6GHz以上的频段)的大带宽通信。当工作频率变高时,传输过程中的路径损耗会增大,从而影响高频系统的覆盖能力。为了能够有效地保证高频段NR系统的覆盖,一种有效的技术方案便是基于大规模天线阵列(Massive MIMO),以形成增益更大的赋形波束,克服传播损耗,确保系统覆盖。
毫米波天线阵列,由于波长更短,天线阵子间距以及孔径更小,可以让更多的物理天线阵子集成在一个有限大小的二维天线阵列中,同时,由于毫米波天线阵列的尺寸有限,从硬件复杂度、成本开销以及功耗等因素考虑,无法采用数字波束赋形方式,而是通常采用模拟波束赋形方式,在增强网络覆盖同时,也可以降低设备的实现复杂度。
一个小区(扇区)使用一个较宽的波束(beam)来覆盖整个小区。因此在每个时刻,小区覆盖范围内终端设备都有机会获得系统分配的传输资源。
NR/5G的多波束(Multi-beam)系统通过不同的beam来覆盖整个小区,即每个beam覆盖一个较小的范围,通过时间上的扫描(sweeping)来实现多个beam覆盖整个小区的效果。
图11示出了不使用波束赋形和使用波束赋形系统的示意图。图11中的(a)是传统的、不使用波束赋形的LTE和NR系统,图11中的(b)是使用波束赋形的NR系统:
在图11中的(a)中,LTE/NR网络侧使用一个宽的波束来覆盖整个小区,用户1-5在任何时刻都可以接收到网络信号。
与此相反,图11中的(b)中网络侧使用较窄的波束(例如图中的波束1-4),在不同的时刻使用不同波束来覆盖小区中的不同区域,例如在时刻1,NR网络侧通过波束1覆盖用户1所在的区域;在时刻2,NR网络侧通过波束2覆盖用户2所在的区域;在时刻3,NR网络侧通过波束3覆盖用户3和用户4所在的区域;在时刻4,NR网络侧通过波束4覆盖用户5所在的区域。
图11中的(b)中,由于网络使用较窄的波束,发射能量可以更集中,因此可以覆盖更远的距离;同时由于波束较窄,每个波束只能覆盖小区中的部分区域,因此模拟波束赋形是“以时间换空间”。
模拟波束赋形不仅可以用于网络侧设备,也同样可以用于终端。同时,模拟波束赋形不仅可以用于信号的发送(称为发送波束),同样也可以用于信号的接收(称为接收波束)。
不同的波束(beam)通过上面承载的不同信号来进行识别。
一些不同波束(beam)上传输不同的同步信号块(Synchronization Signal block,SS block),终端设备可以通过不同的SS block来分辨出不同的波束(beam)。
一些不同的波束(beam)上传输不同的信道状态信息参考信号(Channel State Information Reference Signal,CSI-RS),终端设备通过CSI-RS信号/CSI-RS资源来识别出不同的波束(beam)。
在一个多波束(multi-beam)系统中,物理下行控制信道(Physical Downlink Control Channel,PDCCH)和物理下行共享信道(Physical Downlink Shared Channel,PDSCH)可以通过不同的下行发送波束来传输。
对于载频在6G Hz以下系统,终端侧一般没有模拟波束,因此采用全向天线(或者接近全向的天线)来接收基站不同下行发送波束发送的信号。
对于毫米波系统,终端侧可能会有模拟波束,需要使用对应的下行接收波束去接收对应的下行发送波束发送的信号。此时,需要相应的波束指示信息(beam indication)来协助终端设备确定网络侧的发送波束相关信息,或者终端侧对应的接收波束相关信息。
在NR协议中,波束指示信息不是直接指示波束本身,而是通过信号之间的准共站址(Quasi-co-located,QCL)假设(如QCL类型为“QCL-TypeD”的QCL假设)来进行指示。在终端侧,确定接收相应的信道/信号的统计特性,也是基于QCL准共址假设。
为便于更好的理解本申请实施例,对本申请相关的下行传输的QCL准共址指示/假设进行说明。
终端在进行信号接收时,为了提高接收性能,可以利用数据传输所对应的传输环境的特性来改进接收算法。例如可以利用信道的统计特性来优化信道估计器的设计和参数。在NR系统中,数据传输所对应的这些特性通过QCL状态(QCL-Info)来表示。
下行传输如果来自不同的传输接收点(Transmission Reception Point,TRP)/天线阵列块(panel)/波束(beam),则数据传输所对应的传输环境的特性可能也会有变化,因此在NR系统中,网络侧在传输下行控制信道或数据信道,会通过传输配置指示(Transmission Configuration Indicator,TCI)状态将对应的QCL状态信息指示给终端。
一个TCI状态可以包含如下配置:
TCI状态标识(ID),用于标识一个TCI状态;
QCL信息1;
QCL信息2(可选)。
其中,一个QCL信息又包含如下信息:
QCL类型(type)配置,可以是QCL type A,QCL typeB,QCL typeC或QCL typeD中的一个;
QCL参考信号配置,包括参考信号所在的小区标识(ID),带宽部分(Band Width Part,BWP)标识(ID)以及参考信号的标识(可以是CSI-RS资源标识或同步信号块(Synchronization Signal Block, SSB)索引)。
其中,如果QCL信息1和QCL信息2都配置了,至少一个QCL信息的QCL类型必须为typeA,typeB,typeC中的一个,另一个QCL信息的QCL类型必须为QCL type D。
其中,不同QCL类型配置的定义如下:
'QCL-TypeA':{多普勒频移(Doppler shift),多普勒扩展(Doppler spread),平均时延(average delay),延时扩展(delay spread)};
'QCL-TypeB':{多普勒频移(Doppler shift),多普勒扩展(Doppler spread)};
'QCL-TypeC':{多普勒频移(Doppler shift),平均时延(average delay)};
'QCL-TypeD':{空间接收参数(Spatial Rx parameter)}。
在NR系统中,网络侧可以为下行信号或下行信道指示相应的TCI状态。
如果网络侧通过TCI状态配置目标下行信道或目标下行信号的QCL参考信号为参考SSB或参考CSI-RS资源,且QCL类型配置为typeA,typeB或typeC,则终端可以假设该目标下行信号与该参考SSB或参考CSI-RS资源的大尺度参数是相同的,该大尺度参数通过QCL类型配置来确定。
类似的,如果网络侧通过TCI状态配置目标下行信道或下行信号的QCL参考信号为参考SSB或参考CSI-RS资源,且QCL类型配置为typeD,则终端可以采用与接收该参考SSB或参考CSI-RS资源相同的接收波束(即Spatial Rx parameter),来接收所述目标下行信道或目标下行信号。通常的,目标下行信道(或下行信号)与它的参考SSB或参考CSI-RS资源在网络侧由同一个TRP或者同一个panel或者相同的波束来发送。如果两个下行信号或下行信道的传输TRP或传输panel或发送波束不同,通常会配置不同的TCI状态。
对于下行控制信道,可以通过无线资源控制(Radio Resource Control,RRC)信令或者RRC信令+媒体接入控制(Media Access Control,MAC)信令的方式来指示对应控制资源集(Control Resource Set,CORESET)的TCI状态。
对于下行数据信道,可用的TCI状态集合通过RRC信令来指示,并通过MAC层信令来激活其中部分TCI状态,最后通过下行控制信息(Downlink Control Information,DCI)中的TCI状态指示域从激活的TCI状态中指示一个或两个TCI状态,用于所述DCI调度的PDSCH。2个TCI状态的情况主要是针对多个TRP类似的场景。例如,如图12所示,网络设备通过RRC信令指示N个候选的TCI状态,并通过MAC信令激活K个TCI状态,最后通过DCI中的TCI状态指示域从激活的TCI状态中指示1个或2个使用的TCI状态。
为便于更好的理解本申请实施例,对本申请存在的技术问题进行说明。
为了提升侧行通信系统的传输速率,考虑在侧行传输系统中使用毫米波频段,而在侧行毫米波传输中,如何选取发送端终端和接收端终端之间的最优空域发送滤波器是需要解决的问题。
基于上述问题,本申请提出了一种确定侧行通信的最优空域发送滤波器的方案,可以确定发送端终端和接收端终端之间的最优空域发送滤波器。
以下通过具体实施例详述本申请的技术方案。
图13是根据本申请实施例的无线通信的方法200的示意性流程图,如图13所示,该无线通信的方法200可以包括如下内容中的至少部分内容:
S210,第一终端设备使用空域发送滤波器向第二终端设备发送M个CSI-RS,该M个CSI-RS用于选取目标空域发送滤波器;其中,该M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数;
S220,该第二终端设备接收该第一终端设备使用空域发送滤波器发送的该M个CSI-RS。
在本申请实施例中,该第二终端设备对接收到的CSI-RS进行测量得到的测量结果,以及该第二终端设备可以根据测量结果反馈CSI-RS资源,从而,该第一终端设备可以选取目标空域发送滤波器。
为了提升侧行通信系统的传输速率,在侧行传输系统中使用毫米波频段,在侧行毫米波传输中,发送端(即第一终端设备)通常使用波束赋形(beamforming)的方式进行侧行传输。
在本申请实施例中,该第一终端设备为发送端设备,该第二终端设备为接收端设备。
在一些实施例中,该M个CSI-RS中的CSI-RS为侧行CSI-RS。
在一些实施例中,该M个CSI-RS也可以由其他侧行信号代替,即在上述S210中,该第一终端设备可以使用空域发送滤波器向该第二终端设备发送M个侧行信号,其中,该M个侧行信号用于选取目标空域发送滤波器。
在一些实施例中,该M个侧行信号中的侧行信号包括但不限于以下之一:
CSI-RS,解调参考信号(Demodulation Reference Signal,DMRS),PSCCH DMRS,PSSCH DMRS,定位参考信号(positioning reference signals,PRS),相位跟踪参考信号(Phase Tracking Reference Signal, PT-RS)或侧行同步信号(包括侧行主同步信号和/或侧行辅同步信号)。
在一些实施例中,在上述S210中,“发送M个CSI-RS”也可以表述为“发送M个CSI-RS资源”,本申请对此并不限定。
在一些实施例中,空域发送滤波器(spatial domain transmission filter)也可以称为发送波束(transmission beam)或者空间关系(Spatial relation)或者空间配置(spatial setting)。
在一些实施例中,空域发送滤波器和空域接收滤波器统称为空域滤波器,空域发送滤波器也可以称为发送端空域滤波器,空域接收滤波器也可以称为接收端空域滤波器或接收波束。
在一些实施例中,接收端使用相同的空域接收滤波器(spatial domain reception filter)接收发送端发送的M个CSI-RS。
在本申请一些实施例中,该M个CSI-RS中的每个CSI-RS在该目标CSI-RS资源集合中对应一个CSI-RS资源,该M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源可以指:该M个CSI-RS对应的CSI-RS资源两两不同,即该M个CSI-RS和多个CSI-RS资源是一一对应的;或者,该M个CSI-RS中存在至少两个CSI-RS对应的CSI-RS资源不同。即该第一终端设备使用空域发送滤波器发送了至少两个CSI-RS资源。
在一些实施例中,该第一终端设备使用空域发送滤波器向第二终端设备发送M个CSI-RS可以指:该第一终端设备使用不同的空域发送滤波器发送该M个CSI-RS,例如该M个CSI-RS分别对应不同的发送波束;或者,该第一终端设备不是使用相同的空域发送滤波器发送该M个CSI-RS,例如,发送该M个CSI-RS至少使用了两个不同的发送波束。
作为示例,上述S210具体可以包括:
该第一终端设备使用M个空域发送滤波器向第二终端设备发送M个CSI-RS,其中,每个空域发送滤波器对应一个CSI-RS。
作为示例,上述S210具体可以包括:
该第一终端设备使用K个空域发送滤波器向第二终端设备发送M个CSI-RS,其中,K小于M,并且K大于1,即该M个CSI-RS中存在至少两个CSI-RS是通过不同的空域发送滤波器发送的。
在本申请实施例中,终端设备可以使用波束进行侧行数据传输,此情况下,发送端终端可以确定适用于接收端终端的发送波束以提升侧行传输性能。例如,第一终端设备作为发送端终端时,可以通过不同的发送波束发送侧行参考信号,进一步地,接收端终端可以对发送端终端发送的侧行参考信号进行测量,选取最优测量结果对应的发送波束,进一步向发送端终端反馈该最优的发送波束,从而发送端终端根据接收端终端反馈的最优发送波束进行后续的侧行传输,从而能够提高传输性能。在一些实施方式中,发送波束和参考信号资源之间具有对应关系,接收端选取最优测量结果对应的发送波束,向发送端反馈该发送波束对应的参考信号资源信息,发送端根据该参考信号资源信息及该对应关系即可确定最优的发送波束。
在一些实施例中,该目标CSI-RS资源集合的配置信息中对应的重复(repetition)字段取第一值,其中,该第一值用于指示该第一终端设备不是使用相同的空域发送滤波器发送该目标CSI-RS资源集合中的CSI-RS资源,换言之,该第一值用于指示该第一终端设备使用不同的空域发送滤波器发送该目标CSI-RS资源集合中的CSI-RS资源。
在一些实施例中,该第一值可以为关闭(off),表示该第一终端设备发送该M个CSI-RS用于选取目标空域发送滤波器。
在一些实施方式中,第一终端设备使用M个不同的空域发送滤波器发送M个CSI-RS资源,即不同的CSI-RS资源对应不同的空域滤波器。
在一些实施方式中,第一终端设备使用M1个不同的空域发送滤波器发送M个CSI-RS资源,M1<M;即可以使用相同的空域发送滤波器发送不同的CSI-RS资源。
在一些实施方式中,该M个CSI-RS资源对应CSI-RS资源集合中的M个CSI-RS资源,进一步的,该M个CSI-RS是不同的CSI-RS资源;
在一些实施方式中,该M个CSI-RS资源对应CSI-RS资源集合中的M2个CSI-RS资源,M2<M;进一步的,该M个CSI-RS中可以包括相同的CSI-RS资源。
在一些实施例中,该第一终端设备接收该第二终端设备发送的第一信息;
其中,该第一信息包括目标信道状态信息(Channel State Information,CSI)上报量(reportQuantity),该目标CSI上报量包括以下至少之一:
CSI-RS资源指示(CSI-RS Resource Indicator,CRI),CRI和参考信号接收功率(Reference Signal Received Power,RSRP)(‘CRI-RSRP’),CRI和信号干扰噪声比(Signal to Interference plus Noise Ratio,SINR)(‘CRI-SINR’)。
在一些实施例中,CRI可以是CSI-RS资源的索引,也即,在该目标CSI上报量包括CRI的情况下,该第二终端设备可以仅反馈CSI-RS资源的索引;在该目标CSI上报量包括CRI-RSRP的情况下,该第二终端设备可以反馈CSI-RS资源的索引和RSRP;在该目标CSI上报量包括CRI-SINR的情况下,该第二终端设备可以反馈CSI-RS资源的索引和SINR。
在一些实施例中,该目标CSI上报量可以是该第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的。
在一些实施例中,本申请中的测量结果(包括RSRP和/或SINR)是基于对CSI-RS进行测量得到的。在另一些实施方式中,测量结果是基于对PSCCH DRMS、PSSCH DMRS或侧行PT-RS进行测量得到的。在一些实施方式中,发送端发送的CSI-RS是承载在PSSCH中的,即在PSSCH的资源中映射CSI-RS,通过SCI调度PSSCH,并指示CSI-RS传输。此时,在每次CSI-RS传输中,都有与其相关联的PSCCH和PSSCH。因此,接收端可以基于PSCCH DMRS或PSSCH DMRS进行测量。也即,CSI-RS资源也可以基于与CSI-RS相关联的PSCCH DMRS或PSSCH DMRS的测量结果确定。
在一些实施方式中,发送端通过指示信息指示发送CSI-RS,接收端通过对与该CSI-RS关联的PSCCH DMRS或PSSCH DMRS进行测量,测量结果为PSCCH-RSRP或PSSCH-RSRP,基于测量结果确定CSI-RS资源,并将该CSI-RS资源索引,或该CSI-RS资源索引及其关联的测量结果(即PSCCH-RSRP或PSSCH-RSRP)发送给发送端以辅助发送端选取空域发送滤波器。
应理解,在以下的实施例中,以测量结果为基于CSI-RS得到的测量结果为例进行说明,本发明中的实施例同样适用于测量结果是基于PSCCH DMRS或PSSCH DMRS得到的测量结果的情况。
在一些实施例中,该第一信息包括N个CSI-RS资源的索引,或者,该第一信息用于确定N个CSI-RS资源的索引,该N个CSI-RS资源为该第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N为该第二终端设备需要反馈或上报的CSI-RS资源的数量,N为正整数,且N≤M。
在本申请实施例中,由于第一终端设备采用不同的空域发送滤波器轮流发送CSI-RS,而且第二终端设备并不能准确获知第一终端设备发送CSI-RS的资源位置,第二终端设备只能盲检测第一终端设备是否发送了CSI-RS,另外,由于第一终端设备采用不同的空域发送滤波器发送CSI-RS,有些空域发送滤波器是没有对准第二终端设备的,因此,有可能导致第二终端设备不能检测到第一终端设备发送的所有的CSI-RS,而只能检测其中一部分CSI-RS,因此,第二终端设备可以向第一终端设备发送一个指示信息,用于指示第二终端设备反馈的CSI-RS资源信息(或CSI-RS资源索引)的个数。
例如,如下图14和图15所示,第一终端设备使用4个空域发送滤波器(空域发送滤波器0至空域发送滤波器3)分别发送CSI-RS,第一终端设备在时隙0向第二终端设备发送一个指示信息,用于指示第一终端设备将会用不同的空域发送滤波器轮流发送CSI-RS,并且指示时延边界为10个时隙,即第二终端设备在时隙10之后才向第一终端设备反馈CSI-RS资源索引以及相应的测量结果,同时也表示,第一终端设备将在时隙10之前轮流的方式发送完CSI-RS资源。由于第一终端设备是通过模式2(mode2)(即上述第二模式)选取资源,因此,无法保证第一终端设备具有周期性的传输资源传输CSI-RS,如图15所示,第一终端设备选取了时隙3/5/6/8等四个时隙用不同的空域发送滤波器分别发送CSI-RS,并且不同的时隙使用不同的空域发送滤波器。第二终端设备在资源池内检测第一终端设备发送的SCI,确定第一终端设备是否发送CSI-RS。由于信道质量、半双工限制以及空域发送滤波器方向是否对准等因素的影响,第二终端设备只能接收到空域发送滤波器1和空域发送滤波器2发送的CSI-RS,因此,第二终端设备最多反馈2个CSI-RS资源索引及其对应的测量结果。可选的,第二终端设备可以选取一个或两个CSI-RS资源反馈给第一终端设备。
在一些实施例中,该N个CSI-RS资源的索引按照该N个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,该N个CSI-RS资源的索引按照该N个CSI-RS资源对应的测量结果从低到高的顺序排列。
具体例如,N=1,即第二终端设备只需要反馈一个CSI-RS资源索引即可,例如,具有最优测量结果的CSI-RS,第一终端设备根据该CSI-RS资源索引可以确定与其对应的空域发送滤波器。可选的,当N=1时,第二终端设备不需要反馈测量结果。可选的,当N大于1时,第二终端设备也可以只反馈CSI-RS资源信息,此时反馈的CSI-RS资源信息按照测量结果从高到低的顺序排列。例如,N=3,即需要反馈3个CSI-RS资源信息,分别是CSI-RS资源1、CSI-RS资源2、CSI-RS资源3,其对应的RSRP测量结果分别为-30dBm,-10dBm,-20dBm,则反馈的CSI-RS资源信息如图16所示,即具有最优测量结果的CSI-RS资源在最前面,其次是具有次优测量结果的CSI-RS资源,以此类推。也可以是具有最优测量结果的CSI-RS资源在最后面,其次是具有次优测量结果的CSI-RS资源,以此类推,如图17所示。
在一些实施例中,该第一信息还包括第一测量信息,该第一测量信息用于指示该N个CSI-RS资 源对应的测量结果。
也即,第二终端设备反馈N个CSI-RS资源的索引及其对应的测量结果。
在一些实施例中,当第一终端设备需要切换空域发送滤波器时,可以从第二终端设备反馈的N个CSI-RS资源对应的N个空域发送滤波器中进行快速的选取和切换,而无需第一终端设备再次执行选取最优空域发送滤波器的过程。
具体例如,当侧行链路工作在毫米波段时,发送端和接收端之间的链路很容易因为其他物体的遮挡而导致当前的传输链路失效,此时发送端需要重新确定最优的空域发送滤波器。如果接收端只反馈一个CSI-RS资源,当链路失效时,发送端需要重新选取最优空域发送滤波器的过程,从而重新确定新的最优空域发送滤波器。如果接收端反馈N个CSI-RS资源,当发送端选取的空域发送滤波器失效时,可以从接收端反馈的其余的N-1个CSI-RS资源对应的空域发送滤波器中选取一个进行侧行传输,如选取次优测量结果所对应的CSI-RS资源,进而确定该CSI-RS资源对应的空域发送滤波器。从而避免重选选取最优空域发送滤波器的过程,提高空域发送滤波器重选或空域发送滤波器失效恢复(beam failure recovery)的速度。
具体例如,当发送端需要向多个接收端同时发送侧行数据时(如发送端在同一个时隙需要向多个接收端发送侧行反馈信息),如果各个接收端反馈多个优选的CSI-RS资源,相对于只反馈一个优选CSI-RS资源的情况,发送端可以有更高的概率选取一个空域发送滤波器同时向多个接收端发送侧行数据。例如,发送端支持4个空域发送滤波器,分别对应空域发送滤波器0-3,如果接收端1只反馈一个优选空域发送滤波器,如空域发送滤波器0,接收端2反馈一个优选空域发送滤波器,如空域发送滤波器2,则发送端无法同时为两个接收端发送侧行数据(该侧行数据例如是侧行反馈信息)。而如果接收端1反馈两个优选空域发送滤波器,如空域发送滤波器0和1,接收端2反馈两个优选空域发送滤波器,如空域发送滤波器1和2,则发送端可以使用空域发送滤波器1同时向两个接收端发送侧行数据。
在一些实施例中,该N个CSI-RS资源对应的测量结果大于或等于第一门限值。
在一些实施例中,该第一门限值为预配置或协议约定的,或者,该第一门限值为网络设备配置的,或者,该第一门限值为该第一终端设备配置的。
在一些实施例中,该N个CSI-RS资源对应于该第二终端设备接收到的CSI-RS按照测量结果从高到低的顺序排列的前N个CSI-RS。
在一些实施例中,该N个CSI-RS资源包括N1个第一类CSI-RS资源和N2个第二类CSI-RS资源;
其中,该N1个第一类CSI-RS资源对应于该第二终端设备接收到的CSI-RS,或者,该N1个第一类CSI-RS资源对应于该第二终端设备接收到的并且测量结果大于或等于第一门限值的CSI-RS,该N2个第二类CSI-RS资源对应的索引由该N1个第一类CSI-RS资源中的至少一个CSI-RS资源确定,或者,该N2个第二类CSI-RS资源对应的索引由该多个CSI-RS资源中除该N1个第二类CSI-RS资源之外的CSI-RS资源中的至少一个CSI-RS资源确定,该N2个第二类CSI-RS资源对应的测量结果为缺省值,N1和N2为正整数,N1+N2=N。
具体的,当第一终端设备接收到第二终端设备的反馈信息(即第一信息)时,根据该缺省值可以确定其对应的CSI-RS资源索引是一个无效索引。
在一些实施例中,该缺省值为预配置或协议约定的,或者,该缺省值为网络设备配置的,或者,该缺省值为该第一终端设备配置给该第二终端设备的,或者,该缺省值为该第二终端设备配置给该第一终端设备的,或者,该缺省值为第三终端设备配置的,该第三终端设备为该第一终端设备和该第二终端设备所在的通信组的组头终端。
在一些实施例中,组头终端即在通信组内至少具有如下功能之一的终端:资源管理,资源分配,资源协调,资源配置,管理组成员加入、离开。
具体例如,该缺省值指示没有测量结果时的缺省测量结果,当接收端向发送端反馈的测量结果为缺省值时,表示接收端对与该缺省值对应的CSI-RS资源没有测量结果。
例如,在该缺省值是预配置或网络设备配置的情况下,例如,在资源池配置信息或侧行带宽部分(BWP)配置信息中包括该缺省值。
例如,在该缺省值是发送端配置给接收端(或者,接收端配置给发送端)的情况下,例如,在单播链路建立的过程中,发送端向接收端(或者,接收端向发送端)发送PC5-RRC信令,其中携带该缺省值信息。
在一些实施例中,该缺省值小于或等于第二门限值,或者,该缺省值对应于负无穷大或无穷大。
在一些实施例中,该第二门限值为预配置或协议约定的,或者,该第二门限值为网络设备配置的, 或者,该第二门限值为该第一终端设备配置的。
在一些实施例中,该缺省值可以是小于或等于最低测量结果对应的值。
在一些实施例中,在该N2个第二类CSI-RS资源对应的索引由该N1个第一类CSI-RS资源中的至少一个CSI-RS资源确定的情况下,具体例如,选取N1个第一类CSI-RS资源中具有最优或最差测量结果的CSI-RS资源对应的资源索引作为该N2个第二类CSI-RS资源的索引。例如,在图14和图15中,N=3,CSI-RS资源集合中包括4个CSI-RS资源,但是第二终端设备只接收到两个CSI-RS(如CSI-RS资源1和CSI-RS资源2),并且有相应的测量结果,分别为RSRP1=-10dBm和RSRP2=-20dBm,第二终端设备除了反馈CSI-RS资源1和CSI-RS资源2对应的资源索引之外,第二终端设备还需要反馈一个CSI-RS资源索引,第二终端设备选取具有最优RSRP测量结果的CSI-RS,即CSI-RS资源1,并且将其CSI-RS资源索引进行反馈,第二终端设备按照RSRP测量结果从高到低的顺序排列其相应的CSI-RS资源,因此反馈的CSI-RS资源索引的顺序如图18所示。在第二终端设备反馈的3个CSI-RS资源索引中,包括两个CSI-RS资源索引值1,一个CSI-RS资源索引值2。当第一终端设备接收到第二终端设备的反馈信息时,根据重复的CSI-RS资源索引1,即可确定其中一个CSI-RS索引1(如第二个CSI-RS资源索引1)是一个无效索引。
在一些实施例中,在该N2个第二类CSI-RS资源对应的索引由该N1个第一类CSI-RS资源中的至少一个CSI-RS资源确定的情况下,具体又例如,选取N1个第一类CSI-RS资源中具有最优或最差测量结果的CSI-RS资源对应的资源索引作为该N2个第二类CSI-RS资源的索引。例如,在图14和图15中,N=4,CSI-RS资源集合中包括4个CSI-RS资源,但是第二终端设备只接收到2个CSI-RS(如CSI-RS资源1和CSI-RS资源2),并且有相应的测量结果,分别为RSRP1=-10dBm和RSRP2=-20dBm,第二终端设备除了反馈CSI-RS资源1和CSI-RS资源2对应的资源索引之外,第二终端设备还需要反馈2个CSI-RS资源索引,由于CSI-RS资源1和CSI-RS资源2都有测量结果,因此第二终端设备选可以重复反馈CSI-RS资源1和CSI-RS资源2,因此反馈的CSI-RS资源索引的顺序如图19所示。在第二终端设备反馈的4个CSI-RS资源索引中,包括两个CSI-RS资源索引值1,两个CSI-RS资源索引值2。当第一终端设备接收到第二终端设备的反馈信息时,根据重复的CSI-RS资源索引,即可确定其中一个CSI-RS索引(如第二个CSI-RS资源索引1和第二个CSI-RS资源索引2)是一个无效索引。
在一些实施例中,当第二终端设备检测到的满足条件的CSI-RS资源个数为N1(N1<N)时,第二终端设备反馈N个CSI-RS的资源信息和N个测量结果,其中,包括N1个满足条件的CSI-RS资源信息及其对应的测量结果,以及另外的(N-N1)个CSI-RS资源信息,其对应的测量结果为缺省值。
具体的,满足条件的CSI-RS资源包括如下两种情况:
情况1:该满足条件的CSI-RS资源包括第二终端设备检测到的CSI-RS资源。也即,第二终端设备会检测第一终端设备发送的SCI,如果检测到SCI,通过SCI即可确定第一终端设备发送的CSI-RS的资源信息,因此,第二终端设备可以对该CSI-RS进行测量,并获得相应的测量结果。
情况2:该满足条件的CSI-RS资源包括第二终端设备检测到的CSI-RS资源,并且其测量结果超过第一门限值。也即,在第二终端设备检测到CSI-RS资源,并且其测量结果超过第一门限值时,第二终端设备才会反馈该CSI-RS资源信息。例如,第二终端设备检测到第一终端设备发送的3个CSI-RS资源(如CSI-RS资源1、CSI-RS资源2和CSI-RS资源3),并且相应的测量结果,分别为RSRP1=-10dBm,RSRP2=-20dBm,RSRP3=-120dBm,RSRP门限(即第一门限值)为-80dBm,由于CSI-RS资源3对应的测量结果低于该RSRP门限,因此,第二终端设备反馈的CSI-RS资源信息包括CSI-RS资源1和CSI-RS资源2,而不反馈CSI-RS资源3。
具体例如,第二终端设备可以选取任意的一个CSI-RS资源(除了满足条件的CSI-RS资源之外)与该缺省值相联。例如,在图14和图15中,N=2,CSI-RS资源集合中包括4个CSI-RS资源,但是第二终端设备只接收到一个CSI-RS(如CSI-RS资源2),并且测量结果为RSRP2=-20dBm(满足上述情况1中的条件),则第二终端设备除了反馈该CSI-RS资源对应的索引2及其相应的测量结果之外,第二终端设备还需要反馈一个CSI-RS资源索引以及相应的测量结果,则第二终端设备从CSI-RS资源0/1/3中任意选取一个并且反馈其索引值,并且其相应的测量结果设置为缺省值。如第二终端设备选取CSI-RS资源0,将其测量结果设置为缺省值,并且反馈给第一终端设备,如图20所示。
具体又例如,第二终端设备除了反馈N1个满足条件的CSI-RS资源信息及其相应的测量结果之外,在反馈其他的N-N1个CSI-RS资源信息时,第二终端设备从N1个满足条件的CSI-RS资源中选取一个CSI-RS资源,并将其测量结果设置为缺省值。例如,选取N1个CSI-RS资源中具有最优或最差测量结果的CSI-RS,或任意选取或随机选取一个CSI-RS。例如,在图14和图15中,N=3,CSI-RS资源集合中包括4个CSI-RS资源,但是第二终端设备只接收到两个CSI-RS(如CSI-RS资源1和CSI-RS 资源2),并且有相应的测量结果,分别为RSRP1=-10dBm和RSRP2=-20dBm,RSRP门限为-80dBm,因此,两个CSI-RS资源的测量结果都大于该门限(满足上述情况2中的条件),第二终端设备除了反馈CSI-RS资源1和CSI-RS资源2对应的资源索引及其相应的测量结果之外,第二终端设备还需要反馈一个CSI-RS资源索引以及相应的测量结果,则第二终端设备选取具有最优RSRP测量结果的CSI-RS,即CSI-RS资源1,并且将其测量值设置为缺省值。因此,在第二终端设备反馈的3个CSI-RS资源索引中,包括两个CSI-RS资源索引值1,一个CSI-RS资源索引值2,两个CSI-RS资源索引值1分别对应的测量结果为-10dBm和缺省值,如图21所示。
在一些实施例中,该第一测量信息包括该N个CSI-RS资源分别对应的测量结果的量化索引信息。
在一些实施例中,该N个CSI-RS资源的索引及该N个CSI-RS资源分别对应的测量结果的量化索引信息占用的比特数为:
(A+B)×N;
其中,A表示该N个CSI-RS资源的索引中的一个CSI-RS资源的索引占用的比特数,B表示该N个CSI-RS资源中的一个CSI-RS资源对应的测量结果的量化索引信息占用的比特数,且
Figure PCTCN2021113220-appb-000001
例如,M=8,则A=3。对RSRP(或SINR)测量结果进行量化,用B比特表示量化后的RSRP(或SINR)取值,如B=7;量化的RSRP的范围为[B1,B2]dBm(如[-140,-44]dBm),步长为1dBm。
在一些实施例中,该第一测量信息包括第一测量结果的量化索引信息以及N-1个差分量化索引信息,其中,该第一测量结果对应该N个CSI-RS资源对应的测量结果中的最高值。
在一些实施例中,该N个CSI-RS资源的索引及该N个CSI-RS资源分别对应的测量结果的量化索引信息占用的比特数为:
A×N+B+C×(N-1);
其中,A表示该N个CSI-RS资源的索引中的一个CSI-RS资源的索引占用的比特数,B表示该N个CSI-RS资源中的第一CSI-RS资源的量化索引信息占用的比特数,且该第一CSI-RS资源对应的测量结果为该N个CSI-RS资源中对应的测量结果最大的CSI-RS资源,C表示该N个CSI-RS资源中其他的CSI-RS资源对应的测量结果与该第一CSI-RS资源对应的测量结果的差值的量化索引信息占用的比特数,或者,C表示该N个CSI-RS资源中对应的测量结果相邻的两个CSI-RS资源对应的测量结果的差值的量化索引信息占用的比特数,且
Figure PCTCN2021113220-appb-000002
具体例如,对RSRP(或SINR)测量结果进行量化,具有最大RSRP(或SINR)的测量结果用B比特表示,其余的测量结果用差分RSRP(或差分SINR)表示,如B=7,差分RSRP用C比特表示,如C=4;B比特表示的RSRP的测量结果的范围为[B1,B2]dBm,(如[-140,-44]dBm),步长为1dBm,差分RSRP表示的范围为[C1,C2]dB(如[-30,0]dB),步长为2dB。其中,差分RSRP是相对于最大RSRP测量结果得到的,即差分RSRP表示和最大RSRP测量结果之间的差值。或者,差分RSRP是相对于与其相邻的并且比其大的RSRP测量结果得到的。
例如,如果测量的3个RSRP结果分别为-60dBm、-70dBm、-90dBm,采用第一种差分RSRP方式时,最大RSRP对应-60dBm,余下的两个差分RSRP分别为-10dB和-30dB;采用第二种差分RSRP方式时,最大RSRP对应-60dBm,余下的两个差分RSRP分别为-10dB和-20dB。
在一些实施例中,第二终端设备根据CSI-RS进行RSRP测量,并且反馈RSRP的测量结果,通常,第二终端设备为了能快速的反馈测量结果,通常采用侧行控制信息(Sidelink Control Information,SCI)或媒体接入控制控制元素(Media Access Control Control Element,MAC CE)来承载反馈的CSI-RS资源信息和相应的测量结果。因此,需要对RSRP测量结果进行量化处理。而且,第二终端设备反馈的是层1的RSRP测量结果(即L1 RSRP),即不经过层3滤波处理,直接把物理层测量得到的RSRP结果量化后反馈给第一终端设备。
例如,采用7比特对测量的RSRP进行量化,如下表1所示。
表1
上报值 L1 RSRP 单位
RSRP_0 无效 dBm
RSRP_1 无效 dBm
RSRP_2 无效 dBm
RSRP_3 无效 dBm
RSRP_4 无效 dBm
RSRP_5 无效 dBm
RSRP_6 无效 dBm
RSRP_7 无效 dBm
RSRP_8 无效 dBm
RSRP_9 无效 dBm
RSRP_10 无效 dBm
RSRP_11 无效 dBm
RSRP_12 无效 dBm
RSRP_13 无效 dBm
RSRP_14 无效 dBm
RSRP_15 无效 dBm
RSRP_16 RSRP<-140 dBm
RSRP_17 -140≤RSRP<-139 dBm
RSRP_18 -139≤RSRP<-138 dBm
 
RSRP_111 -46≤RSRP<-45 dBm
RSRP_112 -45≤RSRP<-44 dBm
RSRP_113 -44≤RSRP dBm
RSRP_114 无效 dBm
RSRP_115 无效 dBm
RSRP_116 无效 dBm
RSRP_117 无效 dBm
RSRP_118 无效 dBm
RSRP_119 无效 dBm
RSRP_120 无效 dBm
RSRP_121 无效 dBm
RSRP_122 无效 dBm
RSRP_123 无效 dBm
RSRP_124 无效 dBm
RSRP_125 无效 dBm
RSRP_126 无效 dBm
RSRP_127 无穷 dBm
从上表1可以看出,量化后的RSRP的范围为[-140,44]dBm,小于最小值(即-140dBm)的测量结果用一个RSRP索引表示,大于或等于最大值(即44dBm)的测量结果用一个RSRP索引表示。因此,可以定义缺省值为小于或等于该量化范围中的最小值,例如,缺省的RSRP为-141dBm,即小于量化的最小值;此时,量化的RSRP可以表示为下表所示。当第二终端设备向第一终端设备反馈的RSRP对应索引为RSRP_15时,即表示第二终端设备反馈的是缺省RSRP值,即第二终端设备没有检测到该RSRP测量值所对应的CSI-RS资源。
又例如,采用7比特对测量的RSRP进行量化,如下表2所示。
表2
上报值 L1 RSRP 单位
RSRP_0 无效 dBm
RSRP_1 无效 dBm
RSRP_2 无效 dBm
RSRP_3 无效 dBm
RSRP_4 无效 dBm
RSRP_5 无效 dBm
RSRP_6 无效 dBm
RSRP_7 无效 dBm
RSRP_8 无效 dBm
RSRP_9 无效 dBm
RSRP_10 无效 dBm
RSRP_11 无效 dBm
RSRP_12 无效 dBm
RSRP_13 无效 dBm
RSRP_14 无效 dBm
RSRP_15 RSRP<-141 dBm
RSRP_16 -141≤RSRP<-140 dBm
RSRP_17 -140≤RSRP<-139 dBm
RSRP_18 -139≤RSRP<-138 dBm
 
RSRP_111 -46≤RSRP<-45 dBm
RSRP_112 -45≤RSRP<-44 dBm
RSRP_113 -44≤RSRP dBm
RSRP_114 无效 dBm
RSRP_115 无效 dBm
RSRP_116 无效 dBm
RSRP_117 无效 dBm
RSRP_118 无效 dBm
RSRP_119 无效 dBm
RSRP_120 无效 dBm
RSRP_121 无效 dBm
RSRP_122 无效 dBm
RSRP_123 无效 dBm
RSRP_124 无效 dBm
RSRP_125 无效 dBm
RSRP_126 无效 dBm
RSRP_127 无穷 dBm
又例如,缺省的RSRP设置为负无穷大(或一个非常小的数值,如-1000dBm),或者缺省的RSRP设置为无穷大(或一个非常大的数值,如1000dBm);此时,量化的RSRP可以分别表示为下表3-1和表3-2所示。当第二终端设备向第一终端设备反馈的RSRP对应索引为表3-1中的RSRP_0(或表3-2中的RSRP_127)时,即表示第二终端设备反馈的是缺省RSRP值,即第二终端设备没有检测到该RSRP测量值所对应的CSI-RS资源。
表3-1
上报值 L1 RSRP 单位
RSRP_0 负无穷 dBm
RSRP_1 无效 dBm
RSRP_2 无效 dBm
RSRP_3 无效 dBm
RSRP_4 无效 dBm
RSRP_5 无效 dBm
RSRP_6 无效 dBm
RSRP_7 无效 dBm
RSRP_8 无效 dBm
RSRP_9 无效 dBm
RSRP_10 无效 dBm
RSRP_11 无效 dBm
RSRP_12 无效 dBm
RSRP_13 无效 dBm
RSRP_14 无效 dBm
RSRP_15 无效 dBm
RSRP_16 RSRP<-140 dBm
RSRP_17 -140≤RSRP<-139 dBm
RSRP_18 -139≤RSRP<-138 dBm
 
RSRP_111 -46≤RSRP<-45 dBm
RSRP_112 -45≤RSRP<-44 dBm
RSRP_113 -44≤RSRP dBm
RSRP_114 无效 dBm
RSRP_115 无效 dBm
RSRP_116 无效 dBm
RSRP_117 无效 dBm
RSRP_118 无效 dBm
RSRP_119 无效 dBm
RSRP_120 无效 dBm
RSRP_121 无效 dBm
RSRP_122 无效 dBm
RSRP_123 无效 dBm
RSRP_124 无效 dBm
RSRP_125 无效 dBm
RSRP_126 无效 dBm
RSRP127 无效 dBm
表3-2
上报值 L1 RSRP 单位
RSRP_0 无效 dBm
RSRP_1 无效 dBm
RSRP_2 无效 dBm
RSRP_3 无效 dBm
RSRP_4 无效 dBm
RSRP_5 无效 dBm
RSRP_6 无效 dBm
RSRP_7 无效 dBm
RSRP_8 无效 dBm
RSRP_9 无效 dBm
RSRP_10 无效 dBm
RSRP_11 无效 dBm
RSRP_12 无效 dBm
RSRP_13 无效 dBm
RSRP_14 无效 dBm
RSRP_15 无效 dBm
RSRP_16 RSRP<-140 dBm
RSRP_17 -140≤RSRP<-139 dBm
RSRP_18 -139≤RSRP<-138 dBm
 
RSRP_111 -46≤RSRP<-45 dBm
RSRP_112 -45≤RSRP<-44 dBm
RSRP_113 -44≤RSRP dBm
RSRP_114 无效 dBm
RSRP_115 无效 dBm
RSRP_116 无效 dBm
RSRP_117 无效 dBm
RSRP_118 无效 dBm
RSRP_119 无效 dBm
RSRP_120 无效 dBm
RSRP_121 无效 dBm
RSRP_122 无效 dBm
RSRP_123 无效 dBm
RSRP_124 无效 dBm
RSRP_125 无效 dBm
RSRP_126 无效 dBm
RSRP_127 无穷 dBm
以上示例适用于第二终端设备反馈的N个CSI-RS及其测量结果时,对于每个测量结果都反馈相应的RSRP结果(如7比特的量化结果)。但是,通常情况下,为了降低反馈信令的开销,第二终端设备对于多个RSRP测量结果通常采用差分RSRP反馈的方式。
例如,第二终端设备需要反馈N个CSI-RS资源信息及其各自对应的RSRP测量结果时,对于具有最优RSRP测量结果的,第二终端设备反馈其对应的CSI-RS及相应的RSRP测量结果(如上面表1中经过7比特量化后的RSRP索引),但是对于其他N-1个测量结果通常采用反馈差分RSRP的方式,所谓差分RSRP可以包括两种情况:
第一种情况:即相对于最优的RSRP结果的差值。
例如,第二终端设备检测到3个CSI-RS资源,分别对应CSI-RS资源1、CSI-RS资源2和CSI-RS资源3,分别进行测量得到3个RSRP结果,分别为RSRP1=-10dBm,RSRP2=-20dBm,RSRP3=-35dBm,当采用差分RSRP反馈时,第二终端设备反馈的3个RSRP结果分别是:
反馈CSI-RS资源1的索引1及其对应的RSRP测量结果,即RSRP1=-10dBm;
反馈CSI-RS资源2的索引2及其相对于RSRP1的差分RSRP测量结果,即ΔRSRP=-10dB,根据下表4,其对应的差分RSRP索引为“DIFFRSRP_5”;
反馈CSI-RS资源3的索引3及其相对于RSRP1的差分RSRP测量结果,即ΔRSRP=-25dB,根据下表4,其对应的差分RSRP索引为“DIFFRSRP_12”。
第二种情况:即相对于与之相邻并且测量结果大于或等于其RSRP测量结果的差值。
例如,第二终端设备检测到3个CSI-RS资源,分别对应CSI-RS资源1、CSI-RS资源2和CSI-RS资源3,分别进行测量得到3个RSRP结果,分别为RSRP1=-10dBm,RSRP2=-20dBm,RSRP3=-35dBm,当采用差分RSRP反馈时,第二终端设备反馈的3个RSRP结果分别是:
反馈CSI-RS资源1的索引1及其对应的RSRP测量结果,即RSRP1=-10dBm;
反馈CSI-RS资源2的索引2及其相对于RSRP1的差分RSRP测量结果,即ΔRSRP=-10dB,根据下表4,其对应的差分RSRP索引为“DIFFRSRP_5”;
反馈CSI-RS资源3的索引3及其相对于RSRP2的差分RSRP测量结果,即ΔRSRP=-15dB,根据下表4,其对应的差分RSRP索引为“DIFFRSRP_7”。
表4
Figure PCTCN2021113220-appb-000003
Figure PCTCN2021113220-appb-000004
在一些实施例中,当使用差分RSRP进行反馈时,可以定义差分RSRP的缺省值。例如,在表4中,将最后一个差分RSRP索引(即DIFFRSRP_15)设置为缺省值,即当第二终端设备反馈的差分RSRP对应该索引时,即表示第二终端设备没有检测到该差分RSRP测量结果所关联的CSI-RS资源。
在一些实施例中,该第一信息包括N3个CSI-RS资源的索引,该N3个CSI-RS资源为该第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N3<N,N为该第二终端设备需要反馈或上报的CSI-RS资源的数量,N3和N的正整数,且N≤M。
在一些实施例中,该N3个CSI-RS资源对应该第二终端设备接收到的CSI-RS,或者,该N3个CSI-RS资源对应该第二终端设备接收到的并且对应的测量结果大于或等于第一门限值的CSI-RS。
在一些实施例中,该N3个CSI-RS资源的索引按照该N3个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,该N3个CSI-RS资源的索引按照该N3个CSI-RS资源对应的测量结果从低到高的顺序排列。具体可以参考上述关于N个CSI-RS资源分别对应的测量结果的量化索引信息的相关描述,在此不再赘述。
在一些实施例中,该第一信息还包括第二测量信息,该第二测量信息用于指示该N3个CSI-RS资源对应的测量结果。
在一些实施例中,该第二测量信息包括该N3个CSI-RS资源分别对应的测量结果的量化索引信息。具体可以参考上述关于N个CSI-RS资源分别对应的测量结果的量化索引信息的相关描述,在此不再赘述。
在一些实施例中,该第二测量信息包括第二测量结果的量化索引信息以及N3-1个差分量化索引信息,其中,该第二测量结果对应该N3个CSI-RS资源对应的测量结果中的最高值。具体可以参考上述关于N个CSI-RS资源分别对应的测量结果的量化索引信息的相关描述,在此不再赘述。
在一些实施例中,该第一信息还包括第一指示信息,该第一指示信息用于指示N3的取值。
在一些实施例中,该第一信息还包括第二指示信息,该第二指示信息用于指示N的取值,或者,该第二指示信息用于指示该第二终端设备向该第一终端设备反馈的CSI-RS资源的数量,或者,该第二指示信息用于指示该第二终端设备向该第一终端设备反馈的测量结果的数量。
在一些实施例中,该第一终端设备获取第三指示信息,该第三指示信息用于指示该N的取值。
在一些实施例中,该第一终端设备根据预配置信息获取该第三指示信息;或者,该第一终端设备接收网络设备发送的该第三指示信息;或者,该第一终端设备接收该第二终端设备发送的该第三指示信息;或者,该第一终端设备接收第三终端设备发送的该第三指示信息,该第三终端设备为该第一终端设备和该第二终端设备所在的通信组的组头终端。
在一些实施例中,该第一终端向该第二终端发送第四指示信息,该第四指示信息用于指示该N的取值。
在一些实施例中,该第二终端设备获取第四指示信息,该第四指示信息用于指示该N的取值。
在一些实施例中,该第二终端设备根据预配置信息获取该第四指示信息;或者,该第二终端设备接收网络设备发送的该第四指示信息;或者,该第二终端设备接收该第一终端设备发送的该第四指示信息;或者,该第二终端设备接收第三终端设备发送的该第四指示信息,该第三终端设备为该第一终端设备和该第二终端设备所在的通信组的组头终端。
在一些实施例中,该测量结果包括侧行RSRP和/或侧行SINR。
在一些实施例中,该第一信息通过以下之一承载:
侧行控制信息(Sidelink Control Information,SCI)、媒体接入控制控制元素(Media Access Control Control Element,MAC CE)、侧行反馈信道(Physical Sidelink Feedback Channel,PSFCH)、PC5-RRC信令。
具体例如,在SCI、MAC CE或PC5-RRC中包括的一个信息域,用于指示参数N和/或N3的值。
在一些实施例中,当采用MAC CE承载该第一信息时,MAC CE的格式可以如图22和/或图23。
具体例如,对于待反馈的RSRP,反馈其对应的量化后的RSRP索引时(如表1),即每个RSRP用7比特表示时,在MAC CE中包括N3个CSI-RS资源索引以及其对应的RSRP测量结果,并且包 括信息域指示N3的值。如图22所示,N=3,即最多反馈3个CSI-RS资源及其对应的测量结果,CSI-RS资源集合中包括4个CSI-RS资源,因此用2比特表示CSI-RS索引,N3的取值小于或等于N,即N3<=3,因此N3也需要2比特表示;图中k1/k2/k3分别表示3个CSI-RS资源对应的索引信息,在该方式中,由于每个RSRP测量结果都用7比特表示,所以MAC CE中各个CSI-RS资源的顺序可以不做约定,优选的,RSRP测量结果越大的,在MAC CE中的位置越靠前。Oct1表示字节1,以此类推。图22中(a),(b),(c)可以分别看做是N3=3,N3=2,N3=1的情况。
特别的,当N3=0,即第二终端设备没有接收到任何第一终端设备发送的CSI-RS时,或检测到的CSI-RS资源都不满足条件时,此时,第二终端设备可以向第一终端设备发送一个指示信息(即第二信息),用于指示第二终端设备没有接收到CSI-RS,或用于指示第一终端设备重新轮流发送CSI-RS。可选的,第二终端设备可以通过SCI、MAC CE或PC5-RRC发送该指示信息(即第二信息),当通过MAC CE携带该指示信息(即第二信息)时,如图22中的(d)所示。
具体又例如,当采用差分RSRP进行反馈时,用7比特表示最高RSRP测量结果(如表1),其他的RSRP测量结果采用4比特差分RSRP表示(如表4)。在MAC CE中包括N3个CSI-RS资源索引以及其对应的RSRP测量结果。如图23所示,N=3,即最多反馈3个CSI-RS资源及其对应的测量结果,CSI-RS资源集合中包括4个CSI-RS资源,因此用2比特表示CSI-RS索引,N3的取值小于或等于N,即N3<=3,因此N3也需要2比特表示;图中k1/k2/k3分别表示3个CSI-RS资源对应的索引信息,CSI-RS k1表示最高RSRP测量结果对应的CSI-RS资源,CSI-RS k2表示第二高RSRP测量结果对应的CSI-RS资源,CSI-RS k3表示第三高RSRP测量结果对应的CSI-RS资源。在该方式中,MAC CE中各个CSI-RS资源的顺序按照RSRP测量结果从高到低(或从低到高)的顺序排列。Oct1表示字节1,以此类推。图23中(a),(b),(c)可以分别看做是N3=3,N3=2,N3=1的情况。
特别的,当N3=0,即第二终端设备没有接收到任何第一终端设备发送的CSI-RS时,或检测到的CSI-RS资源都不满足条件时,此时,第二终端设备可以向第一终端设备发送一个指示信息(即第二信息),用于指示第二终端设备没有接收到CSI-RS,或用于指示第一终端设备重新轮流发送CSI-RS。可选的,第二终端设备可以通过SCI、MAC CE或PC5-RRC发送该指示信息(即第二信息),当通过MAC CE携带该指示信息(即第二信息)时,如图23中的(d)所示。
在一些实施例中,该第一终端设备根据该第一信息,选取目标CSI-RS资源,该目标CSI-RS资源对应的空域发送滤波器为该目标空域发送滤波器。进一步地,该第一终端设备使用该目标空域发送滤波器向该第二终端设备发送侧行数据。相应的,该第二终端设备接收该第一终端设备使用该目标CSI-RS资源对应的目标空域发送滤波器发送的侧行数据。
在一些实施例中,该第一终端设备向该第二终端设备发送第一侧行配置信息,该第一侧行配置信息用于配置至少一个传输配置指示TCI状态,该至少一个TCI状态包括第一TCI状态,该第一TCI状态中包括的参考信号为该目标CSI-RS资源对应的CSI-RS。
在一些实施例中,该第一TCI状态中包括的准共站址(QCL)类型为QCL-TypeD。
在一些实施例中,该第一终端设备向该第二终端设备发送第五指示信息,该第五指示信息用于指示该第一TCI状态。例如,该第五指示信息包括该第一TCI状态对应的索引信息。
在一些实施例中,该第五指示信息通过以下之一承载:
侧行控制信息(Sidelink Control Information,SCI)、媒体接入控制控制元素(Media Access Control Control Element,MAC CE)、PC5-RRC信令。
在一些实施方式中,当所述第五指示信息通过SCI或MAC CE承载时,所述第一终端设备指示激活侧行反馈。
在一些实施例中,该第一终端设备接收该第二终端设备发送的第二信息;其中,
该第二信息用于指示该第二终端设备未检测到CSI-RS,或者,该第二信息用于指示该第二终端设备检测到CSI-RS对应的测量结果都低于第一门限值,或者,该第二信息用于指示该第一终端设备重新发送该M个CSI-RS。进一步地,该第一终端设备重新使用空域发送滤波器分别向该第二终端设备发送该M个CSI-RS。
在一些实施例中,该第二信息通过以下之一承载:
SCI、MAC CE、PSFCH、PC5-RRC信令。
在一些实施例中,该第一终端设备确定空域发送滤波器的一个具体流程可以如图24所示,在上述确定第一终端设备的最优空域发送滤波器的过程中,可以包括如下S11至S15。
S11:第一终端设备使用空域发送滤波器分别发送M个CSI-RS。
具体例如,第一终端设备使用M个空域发送滤波器分别发送M个CSI-RS资源,不同的空域发送滤波器对应不同的CSI-RS资源,当第二终端设备反馈相应的CSI-RS资源信息时,第一终端设备即 可根据空域发送滤波器和CSI-RS资源之间的对应关系确定适用于第一终端设备的空域发送滤波器。
S12:第二终端设备针对第一终端设备发送的CSI-RS进行测量,如测量RSRP或SINR等,选取具有最优测量结果的N个CSI-RS资源。
S13:第二终端设备向第一终端设备反馈最优的N个CSI-RS资源信息以及相应的测量结果。
S14:第一终端设备获取第二终端设备发送的CSI-RS资源索引和RSRP测量结果,从中选取一个CSI-RS资源,进一步的,确定该CSI-RS资源所对应的空域发送滤波器信息。优选的,第一终端设备选取最优测量结果所对应的CSI-RS资源。
S15:第一终端设备利用选取的CSI-RS资源,确定其对应的空域发送滤波器信息,利用该空域发送滤波器进行侧行传输。
因此,在本申请实施例中,能够选取第一终端设备和第二终端设备之间的最优空域发送滤波器。
进一步地,第一终端设备和第二终端设备通过信息交互,或者从网络配置信息或预配置信息中获取需要反馈的CSI-RS资源个数,当第二终端设备检测到的CSI-RS资源个数小于需要反馈的CSI-RS资源个数时,第二终端设备向第一终端设备发送指示信息,指示第二终端设备实际反馈的CSI-RS资源的个数。
上文结合图13至图24,详细描述了本申请的方法实施例,下文结合图25至图26,详细描述本申请的装置实施例,应理解,装置实施例与方法实施例相互对应,类似的描述可以参照方法实施例。
图25示出了根据本申请实施例的终端设备300的示意性框图。该终端设备300为第一终端设备,如图25所示,该终端设备300包括:
通信单元310,用于使用空域发送滤波器向第二终端设备发送M个信道状态信息参考信号CSI-RS,该M个CSI-RS用于选取目标空域发送滤波器;
其中,该M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
在一些实施例中,该通信单元310,还用于接收该第二终端设备发送的第一信息;
其中,该第一信息包括目标CSI上报量,该目标CSI上报量包括以下至少之一:
CSI-RS资源指示CRI,CRI和参考信号接收功率RSRP,CRI和接收信号强度指示SINR。
在一些实施例中,该第一信息包括N个CSI-RS资源的索引,或者,该第一信息用于确定N个CSI-RS资源的索引,该N个CSI-RS资源为该第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N为该第二终端设备需要反馈或上报的CSI-RS资源的数量,N为正整数,且N≤M。
在一些实施例中,该N个CSI-RS资源的索引按照该N个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,该N个CSI-RS资源的索引按照该N个CSI-RS资源对应的测量结果从低到高的顺序排列。
在一些实施例中,该第一信息还包括第一测量信息,该第一测量信息用于指示该N个CSI-RS资源对应的测量结果。
在一些实施例中,该N个CSI-RS资源对应的测量结果大于或等于第一门限值。
在一些实施例中,该N个CSI-RS资源对应于该第二终端设备接收到的CSI-RS按照测量结果从高到低的顺序排列的前N个CSI-RS。
在一些实施例中,该N个CSI-RS资源包括N1个第一类CSI-RS资源和N2个第二类CSI-RS资源;
其中,该N1个第一类CSI-RS资源对应于该第二终端设备接收到的CSI-RS,或者,该N1个第一类CSI-RS资源对应于该第二终端设备接收到的并且测量结果大于或等于第一门限值的CSI-RS,该N2个第二类CSI-RS资源对应的索引由该N1个第一类CSI-RS资源中的至少一个CSI-RS资源确定,或者,该N2个第二类CSI-RS资源对应的索引由该多个CSI-RS资源中除该N1个第一类CSI-RS资源之外的CSI-RS资源中的至少一个CSI-RS资源确定,该N2个第二类CSI-RS资源对应的测量结果为缺省值,N1和N2为正整数,N1+N2=N。
在一些实施例中,该缺省值为预配置或协议约定的,或者,该缺省值为网络设备配置的,或者,该缺省值为该第一终端设备配置给该第二终端设备的,或者,该缺省值为该第二终端设备配置给该第一终端设备的,或者,该缺省值为第三终端设备配置的,该第三终端设备为该第一终端设备和该第二终端设备所在的通信组的组头终端。
在一些实施例中,该缺省值小于或等于第二门限值,或者,该缺省值对应于负无穷大或无穷大。
在一些实施例中,该第一测量信息包括该N个CSI-RS资源分别对应的测量结果的量化索引信息。
在一些实施例中,该第一测量信息包括第一测量结果的量化索引信息以及N-1个差分量化索引信息,其中,该第一测量结果对应该N个CSI-RS资源对应的测量结果中的最高值。
在一些实施例中,该第一信息包括N3个CSI-RS资源的索引,该N3个CSI-RS资源为该第二终 端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N3<N,N为该第二终端设备需要反馈或上报的CSI-RS资源的数量,N3和N的正整数,且N≤M。
在一些实施例中,该N3个CSI-RS资源对应该第二终端设备接收到的CSI-RS,或者,该N3个CSI-RS资源对应该第二终端设备接收到的并且对应的测量结果大于或等于第一门限值的CSI-RS。
在一些实施例中,该N3个CSI-RS资源的索引按照该N3个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,该N3个CSI-RS资源的索引按照该N3个CSI-RS资源对应的测量结果从低到高的顺序排列。
在一些实施例中,该第一信息还包括第二测量信息,该第二测量信息用于指示该N3个CSI-RS资源对应的测量结果。
在一些实施例中,该第二测量信息包括该N3个CSI-RS资源分别对应的测量结果的量化索引信息。
在一些实施例中,该第二测量信息包括第二测量结果的量化索引信息以及N3-1个差分量化索引信息,其中,该第二测量结果对应该N3个CSI-RS资源对应的测量结果中的最高值。
在一些实施例中,该第一信息还包括第一指示信息,该第一指示信息用于指示N3的取值。
在一些实施例中,该第一信息还包括第二指示信息,该第二指示信息用于指示N的取值,或者,该第二指示信息用于指示该第二终端设备向该第一终端设备反馈的CSI-RS资源的数量,或者,该第二指示信息用于指示该第二终端设备向该第一终端设备反馈的测量结果的数量。
在一些实施例中,该通信单元310还用于获取第三指示信息,该第三指示信息用于指示该N的取值。
在一些实施例中,该通信单元310具体用于:
根据预配置信息获取该第三指示信息;或者,接收网络设备发送的该第三指示信息;或者,接收该第二终端设备发送的该第三指示信息;或者,接收第三终端设备发送的该第三指示信息,该第三终端设备为该第一终端设备和该第二终端设备所在的通信组的组头终端。
在一些实施例中,该通信单元310还用于向该第二终端设备发送第四指示信息,该第四指示信息用于指示该N的取值。
在一些实施例中,该测量结果包括侧行RSRP和/或侧行SINR。
在一些实施例中,该第一信息通过以下之一承载:
侧行控制信息SCI、媒体接入控制控制元素MAC CE、侧行反馈信道PSFCH、PC5-无线资源控制RRC信令。
在一些实施例中,该终端设备300还包括:处理单元320,其中,
该处理单元320用于根据该第一信息,选取目标CSI-RS资源,该目标CSI-RS资源对应的空域发送滤波器为该目标空域发送滤波器。
在一些实施例中,该通信单元310还用于向该第二终端设备发送第一侧行配置信息,该第一侧行配置信息用于配置至少一个传输配置指示TCI状态,该至少一个TCI状态包括第一TCI状态,该第一TCI状态中包括的参考信号为该目标CSI-RS资源对应的CSI-RS。
在一些实施例中,该第一TCI状态中包括的准共站址QCL类型为QCL-TypeD。
在一些实施例中,该通信单元310还用于向该第二终端设备发送第五指示信息,该第五指示信息用于指示该第一TCI状态。
在一些实施例中,该通信单元310还用于使用该目标空域发送滤波器向该第二终端设备发送侧行数据。
在一些实施例中,该通信单元310还用于接收该第二终端设备发送的第二信息;其中,
该第二信息用于指示该第二终端设备未检测到CSI-RS,或者,该第二信息用于指示该第二终端设备检测到CSI-RS对应的测量结果都低于第一门限值,或者,该第二信息用于指示该第一终端设备重新发送该M个CSI-RS。
在一些实施例中,该通信单元310还用于重新使用空域发送滤波器分别该第二终端设备发送该M个CSI-RS。
在一些实施例中,该第一门限值为预配置或协议约定的,或者,该第一门限值为网络设备配置的,或者,该第一门限值为该第一终端设备配置的。
在一些实施例中,该第二门限值为预配置或协议约定的,或者,该第二门限值为网络设备配置的,或者,该第二门限值为该第一终端设备配置的。
在一些实施例中,上述通信单元可以是通信接口或收发器,或者是通信芯片或者片上系统的输入输出接口。上述处理单元可以是一个或多个处理器。
应理解,根据本申请实施例的终端设备300可对应于本申请方法实施例中的第一终端设备,并且终端设备300中的各个单元的上述和其它操作和/或功能分别为了实现图13所示方法200中第一终端设备的相应流程,为了简洁,在此不再赘述。
图26示出了根据本申请实施例的终端设备400的示意性框图。该终端设备400为第二终端设备,如图26所示,该终端设备400包括:
通信单元410,用于接收第一终端设备使用空域发送滤波器发送的M个信道状态信息参考信号CSI-RS,其中,该M个CSI-RS用于选取目标空域发送滤波器,该M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
在一些实施例中,该通信单元410还用于向该第一终端设备发送第一信息;
其中,该第一信息包括目标CSI上报量,该目标CSI上报量包括以下至少之一:
CSI-RS资源指示CRI,CRI和参考信号接收功率RSRP,CRI和接收信号强度指示SINR。
在一些实施例中,该第一信息包括N个CSI-RS资源的索引,或者,该第一信息用于确定N个CSI-RS资源的索引,该N个CSI-RS资源为该第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N为该第二终端设备需要反馈或上报的CSI-RS资源的数量,N为正整数,且N≤M。
在一些实施例中,该N个CSI-RS资源的索引按照该N个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,该N个CSI-RS资源的索引按照该N个CSI-RS资源对应的测量结果从低到高的顺序排列。
在一些实施例中,该第一信息还包括第一测量信息,该第一测量信息用于指示该N个CSI-RS资源对应的测量结果。
在一些实施例中,该N个CSI-RS资源对应的测量结果大于或等于第一门限值。
在一些实施例中,该N个CSI-RS资源对应于该第二终端设备接收到的CSI-RS按照测量结果从高到低的顺序排列的前N个CSI-RS。
在一些实施例中,该N个CSI-RS资源包括N1个第一类CSI-RS资源和N2个第二类CSI-RS资源;
其中,该N1个第一类CSI-RS资源对应于该第二终端设备接收到的CSI-RS,或者,该N1个第一类CSI-RS资源对应于该第二终端设备接收到的并且测量结果大于或等于第一门限值的CSI-RS,该N2个第二类CSI-RS资源对应的索引由该N1个第一类CSI-RS资源中的至少一个CSI-RS资源确定,或者,该N2个第二类CSI-RS资源对应的索引由该多个CSI-RS资源中除该N1个第一类CSI-RS资源之外的CSI-RS资源中的至少一个CSI-RS资源确定,该N2个第二类CSI-RS资源对应的测量结果为缺省值,N1和N2为正整数,N1+N2=N。
在一些实施例中,该缺省值为预配置或协议约定的,或者,该缺省值为网络设备配置的,或者,该缺省值为该第一终端设备配置给该第二终端设备的,或者,该缺省值为该第二终端设备配置给该第一终端设备的,或者,该缺省值为第三终端设备配置的,该第三终端设备为该第一终端设备和该第二终端设备所在的通信组的组头终端。
在一些实施例中,该缺省值小于或等于第二门限值,或者,该缺省值对应于负无穷大或无穷大。
在一些实施例中,该第一测量信息包括该N个CSI-RS资源分别对应的测量结果的量化索引信息。
在一些实施例中,该第一测量信息包括第一测量结果的量化索引信息以及N-1个差分量化索引信息,其中,该第一测量结果对应该N个CSI-RS资源对应的测量结果中的最高值。
在一些实施例中,该第一信息包括N3个CSI-RS资源的索引,该N3个CSI-RS资源为该第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N3<N,N为该第二终端设备需要反馈或上报的CSI-RS资源的数量,N3和N的正整数,且N≤M。
在一些实施例中,该N3个CSI-RS资源对应该第二终端设备接收到的CSI-RS,或者,该N3个CSI-RS资源对应该第二终端设备接收到的并且对应的测量结果大于或等于第一门限值的CSI-RS。
在一些实施例中,该N3个CSI-RS资源的索引按照该N3个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,该N3个CSI-RS资源的索引按照该N3个CSI-RS资源对应的测量结果从低到高的顺序排列。
在一些实施例中,该第一信息还包括第二测量信息,该第二测量信息用于指示该N3个CSI-RS资源对应的测量结果。
在一些实施例中,该第二测量信息包括该N3个CSI-RS资源分别对应的测量结果的量化索引信息。
在一些实施例中,该第二测量信息包括第二测量结果的量化索引信息以及N3-1个差分量化索引信息,其中,该第二测量结果对应该N3个CSI-RS资源对应的测量结果中的最高值。
在一些实施例中,该第一信息还包括第一指示信息,该第一指示信息用于指示N3的取值。
在一些实施例中,该第一信息还包括第二指示信息,该第二指示信息用于指示N的取值,或者,该第二指示信息用于指示该第二终端设备向该第一终端设备反馈的CSI-RS资源的数量,或者,该第二指示信息用于指示该第二终端设备向该第一终端设备反馈的测量结果的数量。
在一些实施例中,该通信单元410还用于获取第四指示信息,该第四指示信息用于指示该N的取值。
在一些实施例中,该通信单元410具体用于:
根据预配置信息获取该第四指示信息;或者,接收网络设备发送的该第四指示信息;或者,接收该第一终端设备发送的该第四指示信息;或者,接收第三终端设备发送的该第四指示信息,该第三终端设备为该第一终端设备和该第二终端设备所在的通信组的组头终端。
在一些实施例中,该测量结果包括侧行RSRP和/或侧行SINR。
在一些实施例中,该第一信息通过以下之一承载:
侧行控制信息SCI、媒体接入控制控制元素MAC CE、侧行反馈信道PSFCH、PC5-无线资源控制RRC信令。
在一些实施例中,该通信单元410还用于接收该第一终端设备发送的第一侧行配置信息,该第一侧行配置信息用于配置至少一个传输配置指示TCI状态,该至少一个TCI状态包括第一TCI状态,该第一TCI状态中包括的参考信号为目标CSI-RS资源对应的CSI-RS,该目标CSI-RS资源为该第一终端设备根据该第一信息确定的,且该目标CSI-RS资源对应的空域发送滤波器为该目标空域发送滤波器。
在一些实施例中,该第一TCI状态中包括的准共站址QCL类型为QCL-TypeD。
在一些实施例中,该通信单元410还用于接收该第一终端设备发送的第五指示信息,该第五指示信息用于指示该第一TCI状态。
在一些实施例中,该通信单元410还用于接收该第一终端设备使用该目标CSI-RS资源对应的目标空域发送滤波器发送的侧行数据。
在一些实施例中,该通信单元410还用于向该第一终端设备发送第二信息;其中,
该第二信息用于指示该第二终端设备未检测到CSI-RS,或者,该第二信息用于指示该第二终端设备检测到CSI-RS对应的测量结果都低于第一门限值,或者,该第二信息用于指示该第一终端设备重新发送该M个CSI-RS。
在一些实施例中,该通信单元410还用于接收该第一终端设备重新发送的该M个CSI-RS。
在一些实施例中,该第一门限值为预配置或协议约定的,或者,该第一门限值为网络设备配置的,或者,该第一门限值为该第一终端设备配置的。
在一些实施例中,该第二门限值为预配置或协议约定的,或者,该第二门限值为网络设备配置的,或者,该第二门限值为该第一终端设备配置的。
在一些实施例中,上述通信单元可以是通信接口或收发器,或者是通信芯片或者片上系统的输入输出接口。
应理解,根据本申请实施例的终端设备400可对应于本申请方法实施例中的第二终端设备,并且终端设备400中的各个单元的上述和其它操作和/或功能分别为了实现图13所示方法200中第二终端设备的相应流程,为了简洁,在此不再赘述。
图27是本申请实施例提供的一种通信设备500示意性结构图。图27所示的通信设备500包括处理器510,处理器510可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
在一些实施例中,如图27所示,通信设备500还可以包括存储器520。其中,处理器510可以从存储器520中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器520可以是独立于处理器510的一个单独的器件,也可以集成在处理器510中。
在一些实施例中,如图27所示,通信设备500还可以包括收发器530,处理器510可以控制该收发器530与其他设备进行通信,具体地,可以向其他设备发送信息或数据,或接收其他设备发送的信息或数据。
其中,收发器530可以包括发射机和接收机。收发器530还可以进一步包括天线,天线的数量可以为一个或多个。
在一些实施例中,该通信设备500具体可为本申请实施例的终端设备,并且该通信设备500可以实现本申请实施例的各个方法中由第一终端设备实现的相应流程,为了简洁,在此不再赘述。
在一些实施例中,该通信设备500具体可为本申请实施例的终端设备,并且该通信设备500可以实现本申请实施例的各个方法中由第二终端设备实现的相应流程,为了简洁,在此不再赘述。
图28是本申请实施例的装置的示意性结构图。图28所示的装置600包括处理器610,处理器610可以从存储器中调用并运行计算机程序,以实现本申请实施例中的方法。
在一些实施例中,如图28所示,装置600还可以包括存储器620。其中,处理器610可以从存储器620中调用并运行计算机程序,以实现本申请实施例中的方法。
其中,存储器620可以是独立于处理器610的一个单独的器件,也可以集成在处理器610中。
在一些实施例中,该装置600还可以包括输入接口630。其中,处理器610可以控制该输入接口630与其他设备或芯片进行通信,具体地,可以获取其他设备或芯片发送的信息或数据。
在一些实施例中,该装置600还可以包括输出接口640。其中,处理器610可以控制该输出接口640与其他设备或芯片进行通信,具体地,可以向其他设备或芯片输出信息或数据。
在一些实施例中,该装置可应用于本申请实施例中的终端设备,并且该装置可以实现本申请实施例的各个方法中由第一终端设备实现的相应流程,为了简洁,在此不再赘述。
在一些实施例中,该装置可应用于本申请实施例中的终端设备,并且该装置可以实现本申请实施例的各个方法中由第二终端设备实现的相应流程,为了简洁,在此不再赘述。
在一些实施例中,本申请实施例提到的装置也可以是芯片。例如可以是系统级芯片,系统芯片,芯片系统或片上系统芯片等。
图29是本申请实施例提供的一种通信系统700的示意性框图。如图29所示,该通信系统700包括第一终端设备710和第二终端设备720。
其中,该第一终端设备710可以用于实现上述方法中由第一终端设备实现的相应的功能,以及该第二终端设备720可以用于实现上述方法中由第二终端设备实现的相应的功能,为了简洁,在此不再赘述。
应理解,本申请实施例的处理器可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器,处理器读取存储器中的信息,结合其硬件完成上述方法的步骤。
可以理解,本申请实施例中的存储器可以是易失性存储器或非易失性存储器,或可包括易失性和非易失性存储器两者。其中,非易失性存储器可以是只读存储器(Read-Only Memory,ROM)、可编程只读存储器(Programmable ROM,PROM)、可擦除可编程只读存储器(Erasable PROM,EPROM)、电可擦除可编程只读存储器(Electrically EPROM,EEPROM)或闪存。易失性存储器可以是随机存取存储器(Random Access Memory,RAM),其用作外部高速缓存。通过示例性但不是限制性说明,许多形式的RAM可用,例如静态随机存取存储器(Static RAM,SRAM)、动态随机存取存储器(Dynamic RAM,DRAM)、同步动态随机存取存储器(Synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(Double Data Rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(Enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(Synchlink DRAM,SLDRAM)和直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)。应注意,本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
应理解,上述存储器为示例性但不是限制性说明,例如,本申请实施例中的存储器还可以是静态随机存取存储器(static RAM,SRAM)、动态随机存取存储器(dynamic RAM,DRAM)、同步动态随机存取存储器(synchronous DRAM,SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM,DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM,ESDRAM)、同步连接动态随机存取存储器(synch link DRAM,SLDRAM)以及直接内存总线随机存取存储器(Direct Rambus RAM,DR RAM)等等。也就是说,本申请实施例中的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
本申请实施例还提供了一种计算机可读存储介质,用于存储计算机程序。
在一些实施例中,该计算机可读存储介质可应用于本申请实施例中的终端设备,并且该计算机程序使得计算机执行本申请实施例的各个方法中由第一终端设备实现的相应流程,为了简洁,在此不再赘述。
在一些实施例中,该计算机可读存储介质可应用于本申请实施例中的终端设备,并且该计算机程序使得计算机执行本申请实施例的各个方法中由第二终端设备实现的相应流程,为了简洁,在此不再赘述。
本申请实施例还提供了一种计算机程序产品,包括计算机程序指令。
在一些实施例中,该计算机程序产品可应用于本申请实施例中的终端设备,并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由第一终端设备实现的相应流程,为了简洁,在此不再赘述。
在一些实施例中,该计算机程序产品可应用于本申请实施例中的终端设备,并且该计算机程序指令使得计算机执行本申请实施例的各个方法中由第二终端设备实现的相应流程,为了简洁,在此不再赘述。
本申请实施例还提供了一种计算机程序。
在一些实施例中,该计算机程序可应用于本申请实施例中的终端设备,当该计算机程序在计算机上运行时,使得计算机执行本申请实施例的各个方法中由第一终端设备实现的相应流程,为了简洁,在此不再赘述。
在一些实施例中,该计算机程序可应用于本申请实施例中的终端设备,当该计算机程序在计算机上运行时,使得计算机执行本申请实施例的各个方法中由第二终端设备实现的相应流程,为了简洁,在此不再赘述。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到,为描述的方便和简洁,上述描述的系统、装置和单元的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在本申请所提供的几个实施例中,应该理解到,所揭露的系统、装置和方法,可以通过其它的方式实现。例如,以上所描述的装置实施例仅仅是示意性的,例如,所述单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口,装置或单元的间接耦合或通信连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。针对这样的理解,本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来,该计算机软件产品存储在一个存储介质中,包括若干指令用以使得一台计算机设备(可以是个人计算机,服务器,或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括:U盘、移动硬盘、只读存储器(Read-Only Memory,ROM)、随机存取存储器(Random Access Memory,RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述,仅为本申请的具体实施方式,但本申请的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本申请揭露的技术范围内,可轻易想到变化或替换,都应涵盖在本申请的保护范围之内。因此,本申请的保护范围应所述以权利要求的保护范围为准。

Claims (73)

  1. 一种无线通信的方法,其特征在于,包括:
    第一终端设备使用空域发送滤波器向第二终端设备发送M个信道状态信息参考信号CSI-RS,所述M个CSI-RS用于选取目标空域发送滤波器;
    其中,所述M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
  2. 如权利要求1所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备接收所述第二终端设备发送的第一信息;
    其中,所述第一信息包括目标CSI上报量,所述目标CSI上报量包括以下至少之一:
    CSI-RS资源指示CRI,CRI和参考信号接收功率RSRP,CRI和接收信号强度指示SINR。
  3. 如权利要求2所述的方法,其特征在于,
    所述第一信息包括N个CSI-RS资源的索引,或者,所述第一信息用于确定N个CSI-RS资源的索引,所述N个CSI-RS资源为所述第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N为所述第二终端设备需要反馈或上报的CSI-RS资源的数量,N为正整数,且N≤M。
  4. 如权利要求3所述的方法,其特征在于,所述N个CSI-RS资源的索引按照所述N个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,所述N个CSI-RS资源的索引按照所述N个CSI-RS资源对应的测量结果从低到高的顺序排列。
  5. 如权利要求3或4所述的方法,其特征在于,所述第一信息还包括第一测量信息,所述第一测量信息用于指示所述N个CSI-RS资源对应的测量结果。
  6. 如权利要求5所述的方法,其特征在于,所述N个CSI-RS资源对应的测量结果大于或等于第一门限值。
  7. 如权利要求5或6所述的方法,其特征在于,所述N个CSI-RS资源对应于所述第二终端设备接收到的CSI-RS按照测量结果从高到低的顺序排列的前N个CSI-RS。
  8. 如权利要求5所述的方法,其特征在于,
    所述N个CSI-RS资源包括N1个第一类CSI-RS资源和N2个第二类CSI-RS资源;
    其中,所述N1个第一类CSI-RS资源对应于所述第二终端设备接收到的CSI-RS,或者,所述N1个第一类CSI-RS资源对应于所述第二终端设备接收到的并且测量结果大于或等于第一门限值的CSI-RS,所述N2个第二类CSI-RS资源对应的索引由所述N1个第一类CSI-RS资源中的至少一个CSI-RS资源确定,或者,所述N2个第二类CSI-RS资源对应的索引由所述多个CSI-RS资源中除所述N1个第一类CSI-RS资源之外的CSI-RS资源中的至少一个CSI-RS资源确定,所述N2个第二类CSI-RS资源对应的测量结果为缺省值,N1和N2为正整数,N1+N2=N。
  9. 如权利要求8所述的方法,其特征在于,所述缺省值为预配置或协议约定的,或者,所述缺省值为网络设备配置的,或者,所述缺省值为所述第一终端设备配置给所述第二终端设备的,或者,所述缺省值为所述第二终端设备配置给所述第一终端设备的,或者,所述缺省值为第三终端设备配置的,所述第三终端设备为所述第一终端设备和所述第二终端设备所在的通信组的组头终端。
  10. 如权利要求8或9所述的方法,其特征在于,所述缺省值小于或等于第二门限值,或者,所述缺省值对应于负无穷大或无穷大。
  11. 如权利要求5至10中任一项所述的方法,其特征在于,所述第一测量信息包括所述N个CSI-RS资源分别对应的测量结果的量化索引信息。
  12. 如权利要求5至7中任一项所述的方法,其特征在于,所述第一测量信息包括第一测量结果的量化索引信息以及N-1个差分量化索引信息,其中,所述第一测量结果对应所述N个CSI-RS资源对应的测量结果中的最高值。
  13. 如权利要求2所述的方法,其特征在于,
    所述第一信息包括N3个CSI-RS资源的索引,所述N3个CSI-RS资源为所述第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N3<N,N为所述第二终端设备需要反馈或上报的CSI-RS资源的数量,N3和N的正整数,且N≤M。
  14. 如权利要求13所述的方法,其特征在于,所述N3个CSI-RS资源对应所述第二终端设备接收到的CSI-RS,或者,所述N3个CSI-RS资源对应所述第二终端设备接收到的并且对应的测量结果大于或等于第一门限值的CSI-RS。
  15. 如权利要求13或14所述的方法,其特征在于,所述N3个CSI-RS资源的索引按照所述N3个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,所述N3个CSI-RS资源的索引按照所述N3个CSI-RS资源对应的测量结果从低到高的顺序排列。
  16. 如权利要求13至15中任一项所述的方法,其特征在于,所述第一信息还包括第二测量信息, 所述第二测量信息用于指示所述N3个CSI-RS资源对应的测量结果。
  17. 如权利要求16所述的方法,其特征在于,所述第二测量信息包括所述N3个CSI-RS资源分别对应的测量结果的量化索引信息。
  18. 如权利要求16或17所述的方法,其特征在于,所述第二测量信息包括第二测量结果的量化索引信息以及N3-1个差分量化索引信息,其中,所述第二测量结果对应所述N3个CSI-RS资源对应的测量结果中的最高值。
  19. 如权利要求13至18中任一项所述的方法,其特征在于,所述第一信息还包括第一指示信息,所述第一指示信息用于指示N3的取值。
  20. 根据权利要求3至19中任一项所述的方法,其特征在于,所述第一信息还包括第二指示信息,所述第二指示信息用于指示N的取值,或者,所述第二指示信息用于指示所述第二终端设备向所述第一终端设备反馈的CSI-RS资源的数量,或者,所述第二指示信息用于指示所述第二终端设备向所述第一终端设备反馈的测量结果的数量。
  21. 根据权利要求3至19中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备获取第三指示信息,所述第三指示信息用于指示所述N的取值。
  22. 根据权利要求21所述的方法,其特征在于,所述第一终端设备获取第三指示信息,包括:
    所述第一终端设备根据预配置信息获取所述第三指示信息;或者,所述第一终端设备接收网络设备发送的所述第三指示信息;或者,所述第一终端设备接收所述第二终端设备发送的所述第三指示信息;或者,所述第一终端设备接收第三终端设备发送的所述第三指示信息,所述第三终端设备为所述第一终端设备和所述第二终端设备所在的通信组的组头终端。
  23. 根据权利要求22所述的方法,其特征在于,所述方法还包括:
    所述第一终端向所述第二终端发送第四指示信息,所述第四指示信息用于指示所述N的取值。
  24. 如权利要求3至23中任一项所述的方法,其特征在于,所述测量结果包括侧行RSRP和/或侧行SINR。
  25. 如权利要求2至24中任一项所述的方法,其特征在于,所述第一信息通过以下之一承载:
    侧行控制信息SCI、媒体接入控制控制元素MAC CE、侧行反馈信道PSFCH、PC5-无线资源控制RRC信令。
  26. 如权利要求2至25中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备根据所述第一信息,选取目标CSI-RS资源,所述目标CSI-RS资源对应的空域发送滤波器为所述目标空域发送滤波器。
  27. 如权利要求26所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备向所述第二终端设备发送第一侧行配置信息,所述第一侧行配置信息用于配置至少一个传输配置指示TCI状态,所述至少一个TCI状态包括第一TCI状态,所述第一TCI状态中包括的参考信号为所述目标CSI-RS资源对应的CSI-RS。
  28. 如权利要求27中所述的方法,其特征在于,所述第一TCI状态中包括的准共站址QCL类型为QCL-TypeD。
  29. 如权利要求27或28所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备向所述第二终端设备发送第五指示信息,所述第五指示信息用于指示所述第一TCI状态。
  30. 如权利要求26至29中任一项所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备使用所述目标空域发送滤波器向所述第二终端设备发送侧行数据。
  31. 如权利要求1所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备接收所述第二终端设备发送的第二信息;其中,
    所述第二信息用于指示所述第二终端设备未检测到CSI-RS,或者,所述第二信息用于指示所述第二终端设备检测到CSI-RS对应的测量结果都低于第一门限值,或者,所述第二信息用于指示所述第一终端设备重新发送所述M个CSI-RS。
  32. 如权利要求31所述的方法,其特征在于,所述方法还包括:
    所述第一终端设备重新使用空域发送滤波器分别所述第二终端设备发送所述M个CSI-RS。
  33. 如权利要求6、8、14或31所述的方法,其特征在于,所述第一门限值为预配置或协议约定的,或者,所述第一门限值为网络设备配置的,或者,所述第一门限值为所述第一终端设备配置的。
  34. 如权利要求10所述的方法,其特征在于,所述第二门限值为预配置或协议约定的,或者,所述第二门限值为网络设备配置的,或者,所述第二门限值为所述第一终端设备配置的。
  35. 一种无线通信的方法,其特征在于,包括:
    第二终端设备接收第一终端设备使用空域发送滤波器发送的M个信道状态信息参考信号CSI-RS,其中,所述M个CSI-RS用于选取目标空域发送滤波器,所述M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
  36. 如权利要求35所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备向所述第一终端设备发送第一信息;
    其中,所述第一信息包括目标CSI上报量,所述目标CSI上报量包括以下至少之一:
    CSI-RS资源指示CRI,CRI和参考信号接收功率RSRP,CRI和接收信号强度指示SINR。
  37. 如权利要求36所述的方法,其特征在于,
    所述第一信息包括N个CSI-RS资源的索引,或者,所述第一信息用于确定N个CSI-RS资源的索引,所述N个CSI-RS资源为所述第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N为所述第二终端设备需要反馈或上报的CSI-RS资源的数量,N为正整数,且N≤M。
  38. 如权利要求37所述的方法,其特征在于,所述N个CSI-RS资源的索引按照所述N个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,所述N个CSI-RS资源的索引按照所述N个CSI-RS资源对应的测量结果从低到高的顺序排列。
  39. 如权利要求37或38所述的方法,其特征在于,所述第一信息还包括第一测量信息,所述第一测量信息用于指示所述N个CSI-RS资源对应的测量结果。
  40. 如权利要求39所述的方法,其特征在于,所述N个CSI-RS资源对应的测量结果大于或等于第一门限值。
  41. 如权利要求39或40所述的方法,其特征在于,所述N个CSI-RS资源对应于所述第二终端设备接收到的CSI-RS按照测量结果从高到低的顺序排列的前N个CSI-RS。
  42. 如权利要求39所述的方法,其特征在于,
    所述N个CSI-RS资源包括N1个第一类CSI-RS资源和N2个第二类CSI-RS资源;
    其中,所述N1个第一类CSI-RS资源对应于所述第二终端设备接收到的CSI-RS,或者,所述N1个第一类CSI-RS资源对应于所述第二终端设备接收到的并且测量结果大于或等于第一门限值的CSI-RS,所述N2个第二类CSI-RS资源对应的索引由所述N1个第一类CSI-RS资源中的至少一个CSI-RS资源确定,或者,所述N2个第二类CSI-RS资源对应的索引由所述多个CSI-RS资源中除所述N1个第一类CSI-RS资源之外的CSI-RS资源中的至少一个CSI-RS资源确定,所述N2个第二类CSI-RS资源对应的测量结果为缺省值,N1和N2为正整数,N1+N2=N。
  43. 如权利要求42所述的方法,其特征在于,所述缺省值为预配置或协议约定的,或者,所述缺省值为网络设备配置的,或者,所述缺省值为所述第一终端设备配置给所述第二终端设备的,或者,所述缺省值为所述第二终端设备配置给所述第一终端设备的,或者,所述缺省值为第三终端设备配置的,所述第三终端设备为所述第一终端设备和所述第二终端设备所在的通信组的组头终端。
  44. 如权利要求42或43所述的方法,其特征在于,所述缺省值小于或等于第二门限值,或者,所述缺省值对应于负无穷大或无穷大。
  45. 如权利要求39至44中任一项所述的方法,其特征在于,所述第一测量信息包括所述N个CSI-RS资源分别对应的测量结果的量化索引信息。
  46. 如权利要求39至41中任一项所述的方法,其特征在于,所述第一测量信息包括第一测量结果的量化索引信息以及N-1个差分量化索引信息,其中,所述第一测量结果对应所述N个CSI-RS资源对应的测量结果中的最高值。
  47. 如权利要求36所述的方法,其特征在于,
    所述第一信息包括N3个CSI-RS资源的索引,所述N3个CSI-RS资源为所述第二终端设备根据接收到的CSI-RS进行测量得到的测量结果确定的,N3<N,N为所述第二终端设备需要反馈或上报的CSI-RS资源的数量,N3和N的正整数,且N≤M。
  48. 如权利要求47所述的方法,其特征在于,所述N3个CSI-RS资源对应所述第二终端设备接收到的CSI-RS,或者,所述N3个CSI-RS资源对应所述第二终端设备接收到的并且对应的测量结果大于或等于第一门限值的CSI-RS。
  49. 如权利要求47或48所述的方法,其特征在于,所述N3个CSI-RS资源的索引按照所述N3个CSI-RS资源对应的测量结果从高到低的顺序排列,或者,所述N3个CSI-RS资源的索引按照所述N3个CSI-RS资源对应的测量结果从低到高的顺序排列。
  50. 如权利要求47至49中任一项所述的方法,其特征在于,所述第一信息还包括第二测量信息,所述第二测量信息用于指示所述N3个CSI-RS资源对应的测量结果。
  51. 如权利要求50所述的方法,其特征在于,所述第二测量信息包括所述N3个CSI-RS资源分 别对应的测量结果的量化索引信息。
  52. 如权利要求50或51所述的方法,其特征在于,所述第二测量信息包括第二测量结果的量化索引信息以及N3-1个差分量化索引信息,其中,所述第二测量结果对应所述N3个CSI-RS资源对应的测量结果中的最高值。
  53. 如权利要求47至52中任一项所述的方法,其特征在于,所述第一信息还包括第一指示信息,所述第一指示信息用于指示N3的取值。
  54. 根据权利要求37至53中任一项所述的方法,其特征在于,所述第一信息还包括第二指示信息,所述第二指示信息用于指示N的取值,或者,所述第二指示信息用于指示所述第二终端设备向所述第一终端设备反馈的CSI-RS资源的数量,或者,所述第二指示信息用于指示所述第二终端设备向所述第一终端设备反馈的测量结果的数量。
  55. 根据权利要求37至53中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备获取第四指示信息,所述第四指示信息用于指示所述N的取值。
  56. 根据权利要求55所述的方法,其特征在于,所述第二终端设备获取第四指示信息,包括:
    所述第二终端设备根据预配置信息获取所述第四指示信息;或者,所述第二终端设备接收网络设备发送的所述第四指示信息;或者,所述第二终端设备接收所述第一终端设备发送的所述第四指示信息;或者,所述第二终端设备接收第三终端设备发送的所述第四指示信息,所述第三终端设备为所述第一终端设备和所述第二终端设备所在的通信组的组头终端。
  57. 如权利要求37至56中任一项所述的方法,其特征在于,所述测量结果包括侧行RSRP和/或侧行SINR。
  58. 如权利要求36至57中任一项所述的方法,其特征在于,所述第一信息通过以下之一承载:
    侧行控制信息SCI、媒体接入控制控制元素MAC CE、侧行反馈信道PSFCH、PC5-无线资源控制RRC信令。
  59. 如权利要求36至58中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备接收所述第一终端设备发送的第一侧行配置信息,所述第一侧行配置信息用于配置至少一个传输配置指示TCI状态,所述至少一个TCI状态包括第一TCI状态,所述第一TCI状态中包括的参考信号为目标CSI-RS资源对应的CSI-RS,所述目标CSI-RS资源为所述第一终端设备根据所述第一信息确定的,且所述目标CSI-RS资源对应的空域发送滤波器为所述目标空域发送滤波器。
  60. 如权利要求59所述的方法,其特征在于,所述第一TCI状态中包括的准共站址QCL类型为QCL-TypeD。
  61. 如权利要求59或60所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备接收所述第一终端设备发送的第五指示信息,所述第五指示信息用于指示所述第一TCI状态。
  62. 如权利要求59至61中任一项所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备接收所述第一终端设备使用所述目标CSI-RS资源对应的目标空域发送滤波器发送的侧行数据。
  63. 如权利要求35所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备向所述第一终端设备发送第二信息;其中,
    所述第二信息用于指示所述第二终端设备未检测到CSI-RS,或者,所述第二信息用于指示所述第二终端设备检测到CSI-RS对应的测量结果都低于第一门限值,或者,所述第二信息用于指示所述第一终端设备重新发送所述M个CSI-RS。
  64. 如权利要求63所述的方法,其特征在于,所述方法还包括:
    所述第二终端设备接收所述第一终端设备重新发送的所述M个CSI-RS。
  65. 如权利要求40、42、48或63所述的方法,其特征在于,所述第一门限值为预配置或协议约定的,或者,所述第一门限值为网络设备配置的,或者,所述第一门限值为所述第一终端设备配置的。
  66. 如权利要求44所述的方法,其特征在于,所述第二门限值为预配置或协议约定的,或者,所述第二门限值为网络设备配置的,或者,所述第二门限值为所述第一终端设备配置的。
  67. 一种终端设备,其特征在于,所述终端设备为第一终端设备,所述终端设备包括:
    通信单元,用于使用空域发送滤波器向第二终端设备发送M个信道状态信息参考信号CSI-RS,所述M个CSI-RS用于选取目标空域发送滤波器;
    其中,所述M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
  68. 一种终端设备,其特征在于,所述终端设备为第二终端设备,所述终端设备包括:
    通信单元,用于接收第一终端设备使用空域发送滤波器发送的M个信道状态信息参考信号CSI-RS,其中,所述M个CSI-RS用于选取目标空域发送滤波器,所述M个CSI-RS对应目标CSI-RS资源集合中的多个CSI-RS资源,M为正整数。
  69. 一种终端设备,其特征在于,包括:处理器和存储器,该存储器用于存储计算机程序,所述处理器用于调用并运行所述存储器中存储的计算机程序,执行如权利要求1至34中任一项所述的方法,或者,执行如权利要求35至66中任一项所述的方法。
  70. 一种芯片,其特征在于,包括:处理器,用于从存储器中调用并运行计算机程序,使得安装有所述芯片的设备执行如权利要求1至34中任一项所述的方法,或者,执行如权利要求35至66中任一项所述的方法。
  71. 一种计算机可读存储介质,其特征在于,用于存储计算机程序,所述计算机程序使得计算机执行如权利要求1至34中任一项所述的方法,或者,执行如权利要求35至66中任一项所述的方法。
  72. 一种计算机程序产品,其特征在于,包括计算机程序指令,该计算机程序指令使得计算机执行如权利要求1至34中任一项所述的方法,或者,执行如权利要求35至66中任一项所述的方法。
  73. 一种计算机程序,其特征在于,所述计算机程序使得计算机执行如权利要求1至34中任一项所述的方法,或者,执行如权利要求35至66中任一项所述的方法。
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