WO2022188253A1 - Procédé de communication sans fil, dispositif terminal et dispositif de réseau - Google Patents

Procédé de communication sans fil, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2022188253A1
WO2022188253A1 PCT/CN2021/091393 CN2021091393W WO2022188253A1 WO 2022188253 A1 WO2022188253 A1 WO 2022188253A1 CN 2021091393 W CN2021091393 W CN 2021091393W WO 2022188253 A1 WO2022188253 A1 WO 2022188253A1
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WIPO (PCT)
Prior art keywords
srs
srs resource
resource set
terminal device
resources
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PCT/CN2021/091393
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English (en)
Chinese (zh)
Inventor
史志华
陈文洪
田杰娇
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Oppo广东移动通信有限公司
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Publication of WO2022188253A1 publication Critical patent/WO2022188253A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Definitions

  • a network device can configure one or more Sounding Reference Signal (SRS) resource sets (Resource sets) for a terminal device, and each SRS resource set can be configured with one resource set. or multiple SRS resources. For different purposes (such as antenna switching (Antenna switching), uplink transmission (UL transmission), etc.), the network device will configure different sets of SRS resources, which increases the resource overhead of the SRS resources.
  • SRS Sounding Reference Signal
  • the network device receives the terminal capability information sent by the terminal device, where the terminal capability information is used to indicate that the terminal device supports at least one SRS resource for at least two purposes.
  • a terminal device for executing the method in the above-mentioned first aspect or each implementation manner thereof.
  • the network device includes functional modules for executing the methods in the second aspect or the respective implementation manners thereof.
  • a terminal device including a processor and a memory.
  • the memory is used for storing a computer program
  • the processor is used for calling and running the computer program stored in the memory to execute the method in the above-mentioned first aspect or each implementation manner thereof.
  • the apparatus includes: a processor for calling and running a computer program from a memory, so that a device installed with the apparatus executes any one of the above-mentioned first to second aspects or each of its implementations method.
  • a computer-readable storage medium for storing a computer program, the computer program causing a computer to execute the method in any one of the above-mentioned first aspect to the second aspect or each of its implementations.
  • a computer program product comprising computer program instructions, the computer program instructions causing a computer to execute the method in any one of the above-mentioned first to second aspects or the implementations thereof.
  • a computer program which, when run on a computer, causes the computer to perform the method in any one of the above-mentioned first to second aspects or the respective implementations thereof.
  • the terminal device supports at least one SRS resource for at least two purposes, thereby reducing the time-frequency resource overhead corresponding to the SRS resource.
  • FIG. 2 is a schematic diagram of a terminal antenna and a base station antenna provided by the present application.
  • FIG. 3 is a schematic diagram of a codebook-based PUSCH transmission provided by the present application.
  • FIG. 4 is a schematic diagram of a non-codebook-based PUSCH transmission provided by the present application.
  • FIG. 5 is a schematic flowchart of a method for wireless communication according to an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a terminal with four transmit antennas provided according to an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of a network device provided according to an embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a communication device provided according to an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of a communication system provided according to an embodiment of the present application.
  • 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 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 unshared spectrum.
  • the embodiments of the present application describe various embodiments in conjunction with network equipment and terminal equipment, where the terminal equipment may also be referred to as user equipment (User Equipment, UE), access terminal, subscriber unit, subscriber 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 subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device, etc.
  • the terminal device can be a station (STAION, ST) in the WLAN, can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a personal digital processing (Personal Digital Assistant, PDA) devices, handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, next-generation communication systems such as end devices in NR networks, or future Terminal equipment in the evolved public land mobile network (Public Land Mobile Network, PLMN) network, etc.
  • STAION, ST in the WLAN
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • 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, and an augmented reality (Augmented Reality, AR) terminal Equipment, wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
  • a mobile phone Mobile Phone
  • a tablet computer Pad
  • a computer with a wireless transceiver function a virtual reality (Virtual Reality, VR) terminal device
  • augmented reality (Augmented Reality, AR) terminal Equipment wireless terminal equipment in industrial control, wireless terminal equipment in self driving, wireless terminal equipment in remote medical, wireless terminal equipment in smart grid , wireless terminal equipment in transportation safety, wireless terminal equipment in smart city or wireless terminal equipment in smart home, etc.
  • wearable smart devices include full-featured, large-scale, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, which needs to cooperate with other devices such as smart phones.
  • the network device may be a device for communicating with a mobile device, and the network device may be an access point (Access Point, AP) in WLAN, or a base station (Base Transceiver Station, BTS) in GSM or CDMA , it can also be a base station (NodeB, NB) in WCDMA, it can also be an evolved base station (Evolutional Node B, eNB or eNodeB) in LTE, or a relay station or access point, or in-vehicle equipment, wearable devices and NR networks
  • the network device may have a mobile feature, for example, the network device may be a mobile device.
  • the network device may be a satellite or a balloon station.
  • the satellite may be a low earth orbit (LEO) satellite, a medium earth orbit (MEO) satellite, a geostationary earth orbit (GEO) satellite, a High Elliptical Orbit (HEO) ) satellite etc.
  • the network device may also be a base station set in a location such as land or water.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, a terminal).
  • the network device 110 may provide communication coverage for a particular geographic area, and may communicate with terminal devices located within the coverage area.
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and the coverage of each network device may include other numbers of terminal devices. This application The embodiment does not limit this.
  • a device having a communication function in the network/system may be referred to as a communication device.
  • the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as other network entities such as a network controller, a mobility management entity, etc., which are not limited in this embodiment of the present application.
  • the "instruction" mentioned in the embodiments of the present application may be a direct instruction, an indirect instruction, or an associated relationship.
  • a indicates B it can indicate that A directly indicates B, for example, B can be obtained through A; it can also indicate that A indicates B indirectly, such as A indicates C, and B can be obtained through C; it can also indicate that there is an association between A and B relation.
  • predefinition may be implemented by pre-saving corresponding codes, forms, or other means that can be used to indicate relevant information in devices (for example, including terminal devices and network devices).
  • the implementation method is not limited.
  • predefined may refer to the definition 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 in future communication systems, which are not limited in this application.
  • the SRS signal is an important reference signal in the 5G/NR system and is widely used in various functions in the NR system.
  • the transmission of SRS can be divided into periodic (Periodic), semi-persistent (Semi-persistent), and aperiodic (Aperiodic). The details are as follows:
  • Periodic SRS refers to the periodic transmission of SRS, and its period and time slot offset are configured by Radio Resource Control (RRC) signaling.
  • RRC Radio Resource Control
  • the terminal Once the terminal receives the corresponding configuration parameters, it will send the SRS according to a certain period until The RRC configuration is invalid.
  • the spatial correlation information (Spatial Relation Info, which indicates the transmission beam in an implicit manner) of the periodic SRS is also configured by RRC signaling.
  • Semi-persistent SRS is also a periodically transmitted SRS, and the period and slot offset are configured by RRC signaling, but its activation and deactivation signaling is through the Media Access Control Control Element (Media Access Control Control Element, MAC CE) is carried.
  • the terminal starts to periodically transmit SRS after receiving the activation signaling until it receives the deactivation signaling.
  • the spatially related information (transmission beam) of the semi-persistent SRS is carried along with the MAC CE that activates the SRS.
  • the terminal After receiving the period and time slot offset configured by the RRC, the terminal determines the time slot that can be used to transmit SRS according to the following formula 1:
  • T SRS and T offset are the configured period and offset
  • n f are the radio frame and slot numbers, respectively.
  • MIMO Multiple-Input Multiple-Output
  • LTE Long Term Evolution
  • NR 5G
  • WiFi Wireless Fidelity
  • Space diversity gain beamforming gain (precoding gain), spatial multiplexing gain.
  • beamforming gain also called precoding gain
  • spatial multiplexing gain the transmitter needs to determine a beamforming matrix (or precoding matrix) for signal transmission.
  • precoding also called precoding gain
  • beamforming matrix or precoding matrix
  • the determination of the precoding matrix often needs to be based on the corresponding transmission channel information.
  • the determination of the precoding matrix may also be based on channel information, interference information, etc. corresponding to the multi-user MIMO paired users. Therefore, for the determination of the precoding matrix of the terminal A, a basic requirement is to obtain some form of channel information of the transmission channel corresponding to the terminal A.
  • Base station B sends reference information X (for example, Channel State Information Reference Signal (CSI-RS) signal), and terminal A measures and obtains the information of the corresponding downlink channel according to the reference signal X, and then determines the corresponding channel feedback information
  • the channel feedback information may include some of the following forms (may be part or all).
  • Base station B determines the corresponding precoding matrix according to the information fed back by terminal A to send terminal A a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) or a physical downlink control channel (Physical Downlink Control Channel, PDCCH), or other downlink channels or Downlink reference signals, for example, Rank Indication (RI) (Explanation: Rank (rank) information, corresponding to the number of transport streams suggested by the terminal), Channel Quantity Indicator (CQI) (Explanation: Modulation and coding scheme (Modulation and coding scheme) and Coding Scheme, MCS) related information), precoding matrix indicator (Precoding Matrix Indicator, PMI) (Note: codebook information).
  • RI Rank Indication
  • CQI Channel Quantity Indicator
  • PMI Precoding Matrix Indicator
  • terminal A sends SRS information according to the configuration information of base station B, base station B measures the corresponding uplink channel according to the received SRS information, and base station B can determine terminal A according to the mutual dissimilarity of uplink and downlink channels
  • the corresponding precoding matrix is used to transmit PDSCH or PDCCH, or other downlink channels or downlink reference signals.
  • the above feedback method can be used in time division duplex (Time Division Duplex, TDD) systems and frequency division duplex (Frequency Division Duplex, FDD) systems; and methods based on channel mutuality are generally mainly used in TDD systems, and can also be used in band FDD systems with partial mutuality (the protocol does not limit).
  • TDD Time Division Duplex
  • FDD Frequency Division Duplex
  • SRS-ResourceSet The usage in the SRS resource set (SRS-ResourceSet) is set to "antenna Switching", wherein one SRS resource set (SRS-ResourceSet) contains one or more SRS resources (SRS resource).
  • the process of sounding this type of SRS signal is also called the UE sounding procedure for DL CSI acquisition (UE sounding procedure for DL CSI acquisition) for acquiring downlink channel state information (Channel State Information, CSI), which can also be called SRS transmission port Switching (SRS Tx port switching).
  • UE sounding procedure for DL CSI acquisition UE sounding procedure for DL CSI acquisition
  • CSI downlink channel state information
  • SRS Tx port switching SRS transmission port Switching
  • the number of receiving antennas is often greater than the number of transmitting antennas.
  • terminal A has two receiving antennas, but only one transmitting antenna (single moment). Therefore, if terminal A sends an SRS once (when a single antenna is used, the corresponding SRS resource is 1 SRS port), base station B can only obtain 8*1 channels, that is, the channel information corresponding to half of the channels is unknown, so will affect obtaining better precoding performance.
  • the network can configure two 1-port SRS resources, and the two SRS resources are transmitted from two antennas at different times. For example, at time T0, the SRS signal corresponding to SRS resource 0 is transmitted from antenna 0. At time The SRS signal corresponding to SRS resource 1 is transmitted from antenna 1 on T1. In this way, base station B can obtain 8*2 channel information through two SRS transmissions.
  • the above two SRS resources will be configured in the same SRS resource set, and the corresponding usage will also be set to "antennaSwitching".
  • the number of transmitting antennas, the number of receiving antennas of terminal A, and whether to support "antennaSwitching" can be implemented differently. It can be reported through UE capability (UE capability).
  • Each resource set contains 2 SRS resources, each SRS resource is 2SRS port, the two SRS resources are transmitted from different symbols, and the SRS port pair of the second SRS resource in the same resource set ( The UE antenna port pair corresponding to the SRS port pair) is different from the SRS port pair corresponding to the first SRS resource.
  • 0 or 1 SRS resource set can be configured (can be periodic or semi-persistent).
  • Each resource set contains 4 single-port (1-port) SRS resources, each SRS resource is transmitted from different symbols, and different SRS resources correspond to different UE antenna ports.
  • 0 or 2 SRS resource sets can be configured (both are configured as aperiodic).
  • a total of 4 single-port (1-port) SRS resources in the 2 resource sets are transmitted from different symbols in two different slots.
  • the 4 SRS resources correspond to different UE antenna ports.
  • the 4 SRS resources may be 2 SRS resources per resource set, or 1 resource set may contain 3 SRS resources, and another resource set may contain 1 SRS resource.
  • the power parameters of the Radio Resource Control (RRC) configuration corresponding to the two resource sets are the same, and the high-level parameter aperiodic SRS resource trigger condition (aperiodicSRS-ResourceTrigger) is the same, but the parameter slot offset (slotOffset) is different.
  • RRC Radio Resource Control
  • each resource set contains 1 SRS resource, and the SRS port corresponding to the SRS resource is 1, 2 respectively or 4.
  • the interval between SRS resources transmitted in the same slot in the same resource set is Y symbols, where the value of Y is shown in Table 1 below.
  • ⁇ corresponds to different subcarrier spacing (SCS), and ⁇ f is the subcarrier spacing (unit is kHz).
  • the precoding process is generally divided into two parts: analog domain processing and digital domain processing.
  • Analog domain processing For the transmitted analog signal, beamforming is generally used to map the RF signal to the physical antenna.
  • Digital domain processing is for digital signals, generally performed at the baseband, using a precoding matrix to precode the digital signal, and map the data of the transmission layer to the radio frequency port. Due to the limited number of radio frequency channels of the terminal, two processing methods are generally used at the same time, that is, precoding the digital signal, and then beamforming the analog signal.
  • PUSCH transmission is divided into codebook-based transmission and non-codebook-based transmission according to different precoding methods.
  • non-codebook-based precoding methods can also be supported.
  • the terminal can use the downlink channel information to obtain the uplink channel information, so as to perform uplink analog beamforming and/or digital precoding.
  • the network side does not need to indicate the relevant information of the precoding matrix, thereby reducing the DCI overhead.
  • the network side first transmits the CSI-RS, so that the terminal determines the beams and precoding matrices of the N layers based on the CSI-RS.
  • the terminal uses the beams and precoding matrices of the N layers to send N single-port SRS resources (ie, N SRS ports).
  • the N SRS resources are configured as an SRS resource set for non-codebook transmission.
  • the network side measures after receiving the SRS resources, selects the best K SRS resources and indicates the corresponding SRI to the terminal, and the terminal determines the number of transmission layers, precoding matrix and analog beam used according to the SRI.
  • the indicated number of SRS resources is the number of transmission layers, and the precoding matrix and the analog beam used by the corresponding SRS resource are the precoding matrix and beam used by the corresponding layer of the data.
  • the RI and PMI need not be indicated in the DCI, as shown in FIG. 4 .
  • the system hopes that the same one or more SRS resources can be used for multiple purposes, and the overhead of SRS resources can be reduced by this way of sharing resources.
  • the terminal may select an optimized mapping method between SRS resources and physical antennas for different purposes, so as to achieve the best effect. This will lead to different results if the network is configured to share SRS resources, for example, the performance corresponding to different uses may be degraded. So the network may face the dilemma that it cannot be configured in this way.
  • FIG. 5 is a schematic flowchart of a method 200 for wireless communication according to an embodiment of the present application. As shown in FIG. 5 , the method 200 may include but is not limited to the following contents:
  • the terminal device sends terminal capability information to the network device, where the terminal capability information is used to indicate that the terminal device supports at least one SRS resource for at least two purposes;
  • the network device receives the terminal capability information sent by the terminal device.
  • each terminal can independently report its own capabilities, so that the network can perform different configurations for different terminals, thereby reducing the time-frequency resource overhead corresponding to the SRS resources. Otherwise, the network cannot configure SRS resource sharing for all terminals, that is, for each terminal, different SRS resources must be configured for different purposes.
  • the terminal capability information is transmitted through terminal capability signaling (UE capability signaling).
  • UE capability signaling UE capability signaling
  • the terminal capability information is transmitted through RRC signaling or MAC CE signaling.
  • the reporting delay of the terminal capability information is smaller, and the reporting timing is more flexible.
  • the at least two uses include codebook based UL transmission and antenna switching.
  • limiting the use of SRS resource sharing can reduce the complexity of the protocol and the complexity of network and terminal product implementation.
  • usage values corresponding to the at least two usages are codebook (codebook) and antenna switching (antennaSwitching).
  • codebook codebook
  • antenna switching antenna switching
  • a new value may also be introduced, which is similar to codebookAndAntennaSwitching or antennaSwitchingAndCodebook, or codebook-antennaSwitching, or antennaSwitching-codebook, which is not limited in this embodiment of the present application.
  • the at least two uses include at least two of beam management, non-codebook based uplink transmission, codebook based uplink transmission, and antenna switching.
  • the use of SRS resource sharing is not limited, and at the cost of protocol complexity, network and terminal product implementation complexity, more optimization space is supported, which can further reduce the time-frequency resource overhead corresponding to SRS resources.
  • the terminal capability information is also used to indicate the at least two uses. That is, the terminal capability information may also indicate a specific purpose. In this case, the terminal can be implemented with a greater degree of freedom, because it can choose to support SRS resource multiplexing under different usage conditions, so that more terminals can support this new function.
  • the terminal capability information is reported according to frequency bands (that is, different frequency bands can independently report corresponding capabilities), that is, per band reporting.
  • the independent reporting of different frequency bands can allow the terminal to achieve greater freedom.
  • the terminal can support this function on one or some bands, but other bands do not support this function, so that more terminal to support this new feature.
  • the terminal capability information is independently reported according to each frequency band in the frequency band combination (that is, frequency bands in different frequency band combinations can be reported independently), that is, the per band per band combination is reported.
  • different frequency band combinations are reported independently, allowing the terminal to achieve greater freedom.
  • the terminal may not support this function under a certain carrier aggregation (Carrier Aggregation, CA), but in another CA combination. Some bands support this function, so that more terminals can support this new function.
  • Carrier Aggregation CA
  • the at least one SRS resource includes a first SRS resource, where the first SRS resource is an SRS resource for any number of SRS ports. In this case, there is no need to distinguish SRS resources with different numbers of ports, which can reduce the signaling overhead of terminal capability reporting.
  • the SRS resources in the at least one SRS resource are SRS resources for the target number of SRS ports.
  • distinguishing SRS resources with different numbers of ports allows terminals implemented by different hardware to support this function as much as possible, that is, the SRS of some ports can support this function, but the SRS resources of some ports do not support this function. Therefore, the terminal implementation has more flexibility, and more terminals can support this feature.
  • the target number of SRS ports includes one SRS port and/or multiple SRS ports.
  • the terminal capability information includes a first information field, where the first information field is used to indicate the number of the target SRS ports, such as signaling example 1 in Embodiment 1.
  • the terminal capability information respectively indicates whether SRS resources corresponding to a plurality of SRS port numbers including the target SRS port number can be used for at least two purposes.
  • the target number of SRS ports is less than or equal to the number of SRS ports corresponding to antenna switching supported by the terminal device. In this case, limiting the relevant configuration or capability can effectively reduce the complexity of terminal implementation, and at the same time, avoid misunderstanding of different parts of the protocol.
  • the target number of SRS ports is less than or equal to the number of SRS ports corresponding to codebook-based uplink transmission supported by the terminal device. In this case, limiting the relevant configuration or capability can effectively reduce the complexity of terminal implementation, and at the same time, avoid misunderstanding of different parts of the protocol.
  • the maximum value of the number of SRS ports is 4, or the maximum value of the number of SRS ports is 8.
  • Example 1 the terminal device supports at least one SRS resource for at least two purposes, including:
  • the terminal device supports a first set of SRS resources for at least two purposes, wherein the first set of SRS resources includes at least the at least one SRS resource.
  • a set of SRS resources is used to support multiple purposes and reduce signaling overhead.
  • a usage parameter corresponding to the first SRS resource set indicates the at least two usages.
  • the usage parameter corresponding to the first SRS resource set includes at least two values, and the at least two values are respectively used to indicate the at least two usages.
  • the existing value can be used to implement, without introducing a new value, which reduces the complexity of protocol design.
  • the usage parameter corresponding to the first SRS resource set includes a first value
  • the first value is used to indicate the at least two usages.
  • the first value is codebookAndAntennaSwitching or antennaSwitchingAndCodebook. In this case, a new value is introduced for implementation, which can reduce signaling overhead.
  • Example 2 the terminal device supports at least one SRS resource for at least two purposes, including:
  • the terminal device supports multiple sets of SRS resources for at least two purposes, wherein each set of SRS resources in the multiple sets of SRS resources at least includes the at least one SRS resource.
  • the terminal device supports multiple first SRS resource sets, wherein each first SRS resource set includes the at least one SRS resource included in a group of SRS resources in the multiple sets of SRS resources, And each first SRS resource set corresponds to at least two purposes.
  • more usage scenarios can be supported, such as multiple transmit-receive point (TRP) transmission scenarios.
  • TRP transmit-receive point
  • Example 3 the terminal device supports at least one SRS resource for at least two purposes, including:
  • the terminal equipment supports the second SRS resource set and the third SRS resource set,
  • the second SRS resource set at least includes the at least one SRS resource, and the second SRS resource set corresponds to the first use
  • the third SRS resource set includes at least the at least one SRS resource
  • the third SRS resource set corresponds to
  • the first use and the second use are different uses
  • the second SRS resource set and the third SRS resource set include at least one same SRS resource. It should be noted that if it can be extended to more use cases, then there must be more SRS resource sets, and these sets must contain some common functions.
  • the second set of SRS resources and the third set of SRS resources include the same SRS resources.
  • the relevant configuration is limited, which can effectively reduce the complexity of terminal implementation.
  • the second SRS resource set and the third SRS resource set further include different SRS resources.
  • the relevant configuration is not limited, and at the expense of terminal implementation complexity, a larger space for network configuration optimization can be provided.
  • the second SRS resource set includes all SRS resources included in the third SRS resource set. In this case, the relevant configuration is limited, which can effectively reduce the complexity of terminal implementation.
  • the first usage is antenna switching
  • the second usage is codebook-based uplink transmission.
  • the terminal device may perform corresponding SRS transmission according to the first configuration information.
  • the resource type (resourceType) in the SRS resource set (SRS-ResourceSet) corresponding to the fourth SRS resource set may be configured as one of the following: aperiodic (aperiodic), semi-persistent (semiPersistent), Periodic.
  • a usage parameter corresponding to the fourth SRS resource set indicates the at least two usages.
  • the usage parameter corresponding to the fourth SRS resource set includes at least two values, and the at least two values are respectively used to indicate the at least two usages.
  • the usage parameter corresponding to the fourth SRS resource set includes a second value
  • the second value is used to indicate the at least two usages.
  • the second value may be codebookAndAntennaSwitching, antennaSwitchingAndCodebook, codebook-antennaSwitching, antennaSwitching-codebook, and so on.
  • the terminal device receives second configuration information sent by the network device, where the second configuration information is at least used to indicate a fifth SRS resource set and a sixth SRS resource set, where the fifth SRS resource set corresponds to For a third use, the sixth SRS resource set corresponds to a fourth use, the third use and the fourth use are different uses, and the fifth SRS resource set and the sixth SRS resource set include at least one same SRS resource.
  • the terminal device may perform corresponding SRS transmission according to the second configuration information.
  • some or all power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
  • the power-related parameters include reference signals used for path loss calculation, coefficients for path loss calculation, expected received power, and the like. In this case, the relevant configuration is limited, which can effectively reduce the complexity of terminal implementation.
  • the fifth SRS resource set and the sixth SRS resource set correspond to the same resource type (resourceType).
  • the resource type can be used to indicate the time domain transmission characteristics.
  • the resourceType in the SRS-ResourceSet corresponding to the fifth SRS resource set and the resourceType in the SRS-ResourceSet corresponding to the sixth SRS resource set have the same configuration value.
  • the resourceType configuration value is one of the following: aperiodic (aperiodic), semi-persistent (semiPersistent), periodic (periodic). In this case, the relevant configuration is limited, which can effectively reduce the complexity of terminal implementation.
  • the fifth SRS resource set and the sixth SRS resource set include the same SRS resources.
  • the relevant configuration is limited, which can effectively reduce the complexity of terminal implementation.
  • the fifth SRS resource set and the sixth SRS resource set further include different SRS resources.
  • the relevant configuration is not limited, and at the expense of terminal implementation complexity, a larger space for network configuration optimization can be provided.
  • the fifth SRS resource set includes all SRS resources included in the sixth SRS resource set.
  • the relevant configuration is limited, which can effectively reduce the complexity of terminal implementation.
  • the third usage is antenna switching
  • the fourth usage is codebook-based uplink transmission.
  • the usage in the RRC information field corresponding to the fifth SRS resource set is set to antenna switching, and the usage in the RRC information field corresponding to the sixth SRS resource set is set to codebook.
  • the terminal device receives third configuration information sent by the network device, where the third configuration information is used to instruct the terminal device to support configurations of the fifth SRS resource set and the sixth SRS resource set.
  • Embodiment 1 (taking 4 transmitting antenna terminals as an example, it can be extended to terminals with other transmitting antennas), the power level corresponding to the first terminal equipment supports transmission with a maximum power of 26 dBm, and has 4 transmitting antennas, each transmitting antenna pair A power amplifier (PA) with a maximum transmit power of 23dB is shown in Figure 6.
  • PA power amplifier
  • a typical mapping relationship between antenna ports and physical antennas is: one antenna port directly corresponds to one physical antenna.
  • This configuration mapping relationship is also applicable to the 4-port SRS in 4T4R antenna switching. Therefore, in this case, it is feasible for codebook based UL transmission and antenna switching to share one SRS resource, and it can reduce the time-frequency resource overhead of the SRS resource in the network.
  • the network is configured for PUSCH transmission with two antenna ports, the total power corresponding to the two physical antennas is also 26dBm, and it is not necessary to virtualize multiple physical antennas into one antenna port. Therefore, a typical mapping relationship between antenna ports and physical antennas is: one antenna port directly corresponds to one physical antenna. This configuration mapping relationship is also applicable to the 2-port SRS in 2T2R or 2T4R antenna switching. Therefore, in this case, it is feasible for codebook based UL transmission and antenna switching to share one SRS resource, and it can reduce the time-frequency resource overhead of the SRS resource in the network.
  • the network is configured with single-antenna port PUSCH transmission, because the maximum transmit power of the PA corresponding to each physical antenna is only 23dB, a single physical antenna cannot meet the 26dBm requirement, so at least two or more physical antennas need to be virtualized into one antenna port .
  • This configuration mapping relationship is not applicable to the 1-port SRS in the antenna switching of 1T1R or 1T2R or 1T4R. Therefore, in this case, it is feasible that codebook based UL transmission and antenna switching cannot share an SRS resource, otherwise it will bring loss of downlink performance, because the downlink state information obtained by the base station according to the antenna switching and the actual difference match.
  • the first terminal device in order to be able to assist the network to better perform related configurations, sends first terminal capability information to the network device, where the first terminal capability information indicates that the first terminal device supports the following configuration of at least 1 SRS resource for at least 2 purposes:
  • SRS resource contains 4 ports
  • the SRS resource contains 2 ports.
  • the network knows that the first terminal device cannot support a 1-port SRS resource for at least 2 purposes.
  • the first terminal capability information is transmitted through terminal capability signaling (UE capability signaling).
  • UE capability signaling terminal capability signaling
  • the at least 2 uses refer to codebook based UL transmission and antenna switching.
  • signaling example 1 In some implementations of Embodiment 1, signaling example 1:
  • the first terminal capability information includes a field indicating one or more port numbers, for example,
  • Multi-usage is an example of the one field (field), which can be other names. This is an optional field.
  • the maximum number can be 3, or 4, or more.
  • Type corresponds to the number of ports (eg the number of SRS ports).
  • Multi-usage For signaling example 1, 2 and 4 are indicated in the multi-usage (Multi-usage) reported by the first terminal device.
  • signaling example 2 In some implementations of Embodiment 1, signaling example 2:
  • Multi-usage is an example of the one domain, which can be other names.
  • This can be an optional field.
  • Port1, Port2, and Port4 correspond to 1 port, 2 ports, and 4 ports respectively.
  • the names are only used as examples, and can also be other. They can be optional fields.
  • Port2 is supported (supported), and Port4 is supported (supported).
  • signaling example 3 In some implementations of Embodiment 1, signaling example 3:
  • For one or more port numbers respectively indicate that the first terminal device can or can support the corresponding SRS resource for at least two purposes, for example
  • Multi-usage is an example of the one domain, which can be other names.
  • This can be an optional field.
  • Port1, Port2, and Port4 correspond to 1 port, 2 ports, and 4 ports, respectively.
  • the names are only used as examples, and can also be other. They can be optional fields.
  • Port2 and Port4 are reported in the Multi-usage reported by the first terminal device.
  • signaling example 4 In some implementations of Embodiment 1, signaling example 4:
  • For one or more port numbers respectively indicate that the first terminal device can or can support the corresponding SRS resource for at least two purposes, for example
  • Multi-usage is an example of the one domain, which can be other names.
  • This can be an optional field.
  • Port1, Port2, and Port4 correspond to 1 port, 2 ports, and 4 ports, respectively.
  • the names are only used as examples, and can also be other. They can be optional fields. supported, notSupported indicate support, or not support, respectively, and their specific names can be other forms.
  • Port2 In the Multi-usage reported by the first terminal device, Port2 is supported, and Port4 is supported. Or, in the Multi-usage reported by the first terminal device, Port2 is supported, Port4 is supported, and Port1 is notSupported.
  • the first terminal capability is reported according to frequency bands (that is, different frequency bands can independently report corresponding capabilities, per band).
  • the first terminal capability is independently reported according to a frequency band combination (per band combination).
  • the first terminal capability is independently reported according to each frequency band in a frequency band combination (that is, frequency bands in different frequency band combinations can be reported independently, per band per band combination).
  • the first terminal device receives the first configuration information sent by the network device, where the first configuration information at least indicates a fourth SRS resource set, and the fourth SRS resource set corresponds to at least two purposes.
  • the fourth SRS resource set includes at least 2-port SRS resources, and/or at least includes 4-port SRS resources.
  • the resourceType in the SRS-ResourceSet corresponding to the fourth SRS resource set may be configured as one of the following: aperiodic (aperiodic), semi-persistent (semiPersistent), and periodic (periodic).
  • the fourth SRS resource set corresponds to at least 2 uses.
  • the usage parameter indicates at least 2 values, each value indicating 1 different usage.
  • the usage parameter indicates 1 value
  • the 1 indicates the at least 2 uses, for example, the 1 value is to introduce a new value, such as a name like codebookAndAntennaSwitching, antennaSwitchingAndCodebook, codebook-antennaSwitching, antennaSwitching-codebook.
  • At least 2 uses correspond to codebook-based UL transmission and antenna switching.
  • the first terminal device receives the second configuration information sent by the network device, where the second configuration information at least indicates the fifth SRS resource set and the sixth SRS resource set.
  • the fifth SRS resource set corresponds to a third usage
  • the sixth SRS resource set corresponds to a fourth usage
  • the third usage and the fourth usage are different usages
  • the fifth SRS resource set and the sixth SRS resource set contains at least 1 same SRS resource.
  • the at least 2 uses correspond to codebook-based UL transmission and antenna switching.
  • the resourceType in the SRS-ResourceSet corresponding to the fifth SRS resource set and the configuration value of the resourceType in the SRS-ResourceSet corresponding to the sixth SRS resource set are the same.
  • the resourceType configuration value is one of the following: aperiodic, semiPersistent, periodic.
  • some or all power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
  • the at least 1 same SRS resource is a 2-port SRS resource, and/or a 4-port SRS resource.
  • the fifth SRS resource set and the sixth SRS resource set contain the same SRS resource.
  • the fifth SRS resource set and the sixth SRS resource set may also include other different SRS resources.
  • the fifth SRS resource set contains all the SRS resources in the sixth SRS resource set.
  • the corresponding use of the fifth SRS resource set is antenna switching
  • the corresponding use of the sixth SRS resource set is Codebook-based UL transmission.
  • the domain (or field) usage in the RRC IE corresponding to the fifth SRS resource set is set to 'antennaSwitching'
  • the domain (or field) usage in the RRC IE corresponding to the sixth SRS resource set is set to 'codebook' '.
  • the first terminal device performs corresponding SRS transmission according to the above configuration (the first configuration information or the second configuration information).
  • Embodiment 2 (taking 4 transmitting antenna terminals as an example, it can be extended to terminals with other transmitting antennas), the power level corresponding to the first terminal equipment supports transmission with a maximum power of 26 dBm, and has 4 transmitting antennas, each transmitting antenna pair A power amplifier (PA) with a maximum transmit power of 20dB is shown in Figure 6.
  • PA power amplifier
  • a typical mapping relationship between antenna ports and physical antennas is: one antenna port directly corresponds to one physical antenna.
  • This configuration mapping relationship is also applicable to the 4-port SRS in 4T4R antenna switching. Therefore, in this case, it is feasible for codebook based UL transmission and antenna switching to share one SRS resource, and it can reduce the time-frequency resource overhead of the SRS resource in the network.
  • the total power corresponding to the two physical antennas is also 23dBm, which cannot meet the requirement of 26dBm. Therefore, at least two or more physical antennas need to be virtualized into one antenna port, that is, four physical antennas Virtual into 2 antenna ports.
  • This configuration mapping relationship is not applicable to the 2-port SRS in 2T2R or 2T4R antenna switching. Therefore, in this case, it is feasible that codebook based UL transmission and antenna switching cannot share an SRS resource, otherwise it will bring loss of downlink performance, because the downlink state information obtained by the base station according to the antenna switching and the actual difference match.
  • the network is configured with a single antenna port for PUSCH transmission, because the maximum transmit power of the PA corresponding to each physical antenna is only 20dB, a single or two physical antennas cannot meet the 26dBm requirement. Therefore, four physical antennas need to be virtualized into one antenna port.
  • This configuration mapping relationship is not applicable to the 1-port SRS in the antenna switching of 1T1R or 1T2R or 1T4R. Therefore, in this case, it is feasible that codebook based UL transmission and antenna switching cannot share an SRS resource, otherwise it will bring loss of downlink performance, because the downlink state information obtained by the base station according to the antenna switching and the actual difference match.
  • the first terminal device in order to be able to assist the network to better perform related configurations, sends first terminal capability information to the network device, where the first terminal capability information indicates that the first terminal device supports the following configuration of at least 1 SRS resource for at least 2 purposes:
  • the SRS resource contains 4 ports.
  • the network knows that the first terminal device cannot support the SRS resource of 1 port for at least two purposes, and cannot support the SRS resource of 2 ports for at least two purposes.
  • the first terminal capability information is transmitted through terminal capability signaling (UE capability signaling).
  • UE capability signaling UE capability signaling
  • the at least 2 uses refer to codebook based UL transmission and antenna switching.
  • Embodiment 2 for signaling example 1, 2 is indicated in the Multi-usage reported by the first terminal device.
  • Port4 is reported in the Multi-usage reported by the first terminal device.
  • Port4 in the Multi-usage reported by the first terminal device is supported. Or, in the Multi-usage reported by the first terminal device, Port4 is supported, Port1 is notSupported, and Port2 is notSupported.
  • the capabilities of the first terminal are reported according to frequency bands (that is, different frequency bands can independently report corresponding capabilities, per band).
  • the first terminal capability is independently reported according to a frequency band combination (per band combination).
  • the first terminal capability is independently reported according to each frequency band in a frequency band combination (that is, frequency bands in different frequency band combinations can be reported independently, per band per band combination).
  • the first terminal device receives the first configuration information sent by the network device, the first configuration information at least indicates a fourth SRS resource set, and the fourth SRS resource set corresponds to at least two purposes .
  • the fourth SRS resource set includes at least 4-port SRS resources.
  • the resourceType in the SRS-ResourceSet corresponding to the fourth SRS resource set may be configured as one of the following: aperiodic (aperiodic), semi-persistent (semiPersistent), and periodic (periodic).
  • the fourth SRS resource set corresponds to at least 2 uses.
  • the usage parameter indicates at least 2 values, each value indicating a different usage.
  • the usage parameter indicates 1 value
  • the 1 indicates the at least 2 usages
  • the 1 value is to introduce a new value, such as a name like codebookAndAntennaSwitching, antennaSwitchingAndCodebook, codebook- antennaSwitching, antennaSwitching-codebook.
  • the at least 2 uses correspond to codebook-based UL transmission and antenna switching.
  • the first terminal device receives second configuration information sent by the network device, where the second configuration information at least indicates a fifth SRS resource set and a sixth SRS resource set, and the fifth SRS resource set corresponds to the third purpose, the sixth SRS resource set corresponds to the fourth purpose, and the third purpose and the fourth purpose are different purposes, the fifth SRS resource set and the sixth SRS resource set contain at least one The same SRS resource.
  • the at least 2 uses correspond to codebook-based UL transmission and antenna switching.
  • the resourceType in the SRS-ResourceSet corresponding to the fifth SRS resource set and the configuration value of the resourceType in the SRS-ResourceSet corresponding to the sixth SRS resource set are the same.
  • the resourceType configuration value is one of the following: aperiodic, semiPersistent, periodic.
  • some or all power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
  • the at least 1 same SRS resource is a 4-port SRS resource.
  • the fifth SRS resource set and the sixth SRS resource set contain the same SRS resource.
  • the fifth SRS resource set and the sixth SRS resource set may also include other different SRS resources.
  • the fifth SRS resource set contains all the SRS resources in the sixth SRS resource set.
  • the corresponding use of the fifth SRS resource set is antenna switching
  • the corresponding use of the sixth SRS resource set is Codebook-based UL transmission.
  • the domain (or field) usage in the RRC IE corresponding to the fifth SRS resource set is set to 'antennaSwitching'
  • the domain (or field) usage in the RRC IE corresponding to the sixth SRS resource set is set to 'codebook' '.
  • the first terminal device performs corresponding SRS transmission according to the above configuration (the first configuration information or the second configuration information).
  • Embodiment 3 (taking 4 transmitting antenna terminals as an example, it can be extended to terminals with other transmitting antennas), the power level corresponding to the first terminal equipment supports transmission with a maximum power of 26 dBm, and has 4 transmitting antennas, each transmitting antenna pair A power amplifier (PA) with a maximum transmit power of 26dB is shown in Figure 6.
  • PA power amplifier
  • a typical mapping relationship between antenna ports and physical antennas is: one antenna port directly corresponds to one physical antenna.
  • This configuration mapping relationship is also applicable to the 4-port SRS in 4T4R antenna switching. Therefore, in this case, it is feasible for codebook based UL transmission and antenna switching to share one SRS resource, and it can reduce the time-frequency resource overhead of the SRS resource in the network.
  • the network is configured with two antenna ports for PUSCH transmission, the total power corresponding to the two physical antennas is also 26dBm, and there is no need to virtualize multiple physical antennas into one antenna port. Therefore, a typical mapping relationship between antenna ports and physical antennas is: one antenna port directly corresponds to one physical antenna. This configuration mapping relationship is also applicable to the 2-port SRS in 2T2R or 2T4R antenna switching. Therefore, in this case, it is feasible for codebook based UL transmission and antenna switching to share one SRS resource, and it can reduce the time-frequency resource overhead of the SRS resource in the network.
  • the maximum transmit power of the PA corresponding to each physical antenna meets the requirement of 26dBm. Therefore, a typical mapping relationship between antenna ports and physical antennas is: one antenna port directly corresponds to one physical antenna .
  • This configuration mapping relationship is also applicable to the 1-port SRS in the antenna switching of 1T1R or 1T2R or 1T4R. Therefore, in this case, it is feasible for codebook based UL transmission and antenna switching to share one SRS resource, and it can reduce the time-frequency resource overhead of the SRS resource in the network.
  • the first terminal device in order to be able to assist the network to better perform related configurations, sends first terminal capability information to the network device, where the first terminal capability information indicates that the first terminal device supports the following configuration of at least 1 SRS resource for at least 2 purposes:
  • SRS resource contains 4 ports
  • SRS resource contains 2 ports
  • SRS resource contains 1 port.
  • the first terminal capability information is transmitted through terminal capability signaling (UE capability signaling).
  • UE capability signaling terminal capability signaling
  • the at least 2 uses refer to codebook based UL transmission and antenna switching.
  • Embodiment 3 for signaling example 1, 1, 2 and 4 are indicated in the Multi-usage reported by the first terminal device.
  • the capabilities of the first terminal are reported according to frequency bands (bands) (that is, different frequency bands can independently report corresponding capabilities, per band).
  • the first terminal capability is independently reported according to a frequency band combination (per band combination).
  • the first terminal capability is independently reported according to each frequency band in a frequency band combination (that is, frequency bands in different frequency band combinations can be reported independently, per band per band combination).
  • the first terminal device receives the first configuration information sent by the network device, the first configuration information at least indicates a fourth SRS resource set, and the fourth SRS resource set corresponds to at least two purposes .
  • the fourth SRS resource set includes at least a 1-port (single-port) SRS resource, a 2-port SRS resource, and a 4-port SRS resource.
  • the resourceType in the SRS-ResourceSet corresponding to the fourth SRS resource set may be configured as one of the following: aperiodic (aperiodic), semi-persistent (semiPersistent), and periodic (periodic).
  • the fourth SRS resource set corresponds to at least 2 uses.
  • the usage parameter indicates at least 2 values, each value indicating a different usage.
  • the usage parameter indicates 1 value
  • the 1 indicates the at least 2 usages
  • the 1 value is to introduce a new value, such as a name like codebookAndAntennaSwitching, antennaSwitchingAndCodebook, codebook- antennaSwitching, antennaSwitching-codebook.
  • the at least 2 uses correspond to codebook-based UL transmission and antenna switching.
  • the first terminal device receives second configuration information sent by the network device, where the second configuration information at least indicates a fifth SRS resource set and a sixth SRS resource set, and the fifth SRS resource set set corresponds to the third purpose, the sixth SRS resource set corresponds to the fourth purpose, and the third purpose and the fourth purpose are different purposes, the fifth SRS resource set and the sixth SRS resource set contain at least one The same SRS resource.
  • the at least 2 uses correspond to codebook-based UL transmission and antenna switching.
  • the resourceType in the SRS-ResourceSet corresponding to the fifth SRS resource set and the configuration value of the resourceType in the SRS-ResourceSet corresponding to the sixth SRS resource set are the same.
  • the resourceType configuration value is one of the following: aperiodic, semiPersistent, periodic.
  • some or all power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
  • the at least 1 same SRS resource is a 1-port SRS resource, and/or a 2-port SRS resource, and/or a 4-port SRS resource.
  • the fifth SRS resource set and the sixth SRS resource set contain the same SRS resource.
  • the fifth SRS resource set and the sixth SRS resource set may also include other different SRS resources.
  • the fifth SRS resource set contains all the SRS resources in the sixth SRS resource set.
  • the corresponding use of the fifth SRS resource set is antenna switching
  • the corresponding use of the sixth SRS resource set is codebook-based UL transmission.
  • the domain (or field) usage in the RRC IE corresponding to the fifth SRS resource set is set to 'antennaSwitching'
  • the domain (or field) usage in the RRC IE corresponding to the sixth SRS resource set is set to 'codebook' '.
  • the first terminal device performs corresponding SRS transmission according to the above configuration.
  • the terminal device supports at least one SRS resource for at least two purposes, thereby reducing the time-frequency resource overhead corresponding to the SRS resource.
  • FIG. 7 shows a schematic block diagram of a terminal device 300 according to an embodiment of the present application.
  • the terminal device 300 includes:
  • the communication unit 310 is configured to send terminal capability information, where the terminal capability information is used to indicate that the terminal device supports at least one sounding reference signal SRS resource for at least two purposes.
  • the at least two uses include codebook based uplink transmission and antenna switching.
  • usage values corresponding to the at least two usages are codebook and antenna switching, respectively.
  • the at least two uses include at least two of beam management, non-codebook based uplink transmission, codebook based uplink transmission, and antenna switching.
  • the terminal capability information is also used to indicate the at least two uses.
  • the reporting granularity of the terminal capability information includes one of the following:
  • the at least one SRS resource includes a first SRS resource, where the first SRS resource is an SRS resource for any number of SRS ports.
  • the SRS resources in the at least one SRS resource are SRS resources for the target number of SRS ports.
  • the target number of SRS ports includes one SRS port and/or multiple SRS ports.
  • the terminal capability information includes a first information field, where the first information field is used to indicate the target SRS port number.
  • the terminal capability information respectively indicates that SRS resources corresponding to a plurality of SRS port numbers including the target SRS port number can be used for at least two purposes; or,
  • the terminal capability information respectively indicates whether SRS resources corresponding to a plurality of SRS port numbers including the target SRS port number can be used for at least two purposes.
  • the number of target SRS ports is less than or equal to the number of SRS ports corresponding to antenna switching supported by the terminal device, or the number of target SRS ports is less than or equal to the number of SRS ports corresponding to codebook-based uplink transmission supported by the terminal device Number of SRS ports.
  • the maximum value of the number of SRS ports is 4, or the maximum value of the number of SRS ports is 8.
  • the terminal device supports at least one SRS resource for at least two purposes, including:
  • the terminal device supports a first set of SRS resources for at least two purposes, wherein the first set of SRS resources includes at least the at least one SRS resource.
  • the usage parameter corresponding to the first SRS resource set indicates the at least two usages.
  • the usage parameter corresponding to the first SRS resource set includes at least two values, and the at least two values are respectively used to indicate the at least two usages.
  • the usage parameter corresponding to the first SRS resource set includes a first value, and the first value is used to indicate the at least two usages.
  • the terminal device supports at least one SRS resource for at least two purposes, including:
  • the terminal device supports multiple sets of SRS resources for at least two purposes, wherein each set of SRS resources in the multiple sets of SRS resources at least includes the at least one SRS resource.
  • the terminal device supports multiple first SRS resource sets, wherein each first SRS resource set includes the at least one SRS resource included in a set of SRS resources in the multiple sets of SRS resources, and each The first SRS resource set corresponds to at least two purposes.
  • the terminal device supports at least one SRS resource for at least two purposes, including:
  • the terminal equipment supports the second SRS resource set and the third SRS resource set,
  • the second SRS resource set at least includes the at least one SRS resource, and the second SRS resource set corresponds to the first use
  • the third SRS resource set includes at least the at least one SRS resource
  • the third SRS resource set corresponds to
  • the first use and the second use are different uses
  • the second SRS resource set and the third SRS resource set include at least one same SRS resource.
  • the second SRS resource set and the third SRS resource set include the same SRS resources; and/or,
  • the second SRS resource set and the third SRS resource set further include different SRS resources.
  • the second SRS resource set includes all SRS resources included in the third SRS resource set.
  • the first usage is antenna switching
  • the second usage is codebook-based uplink transmission.
  • the communication unit 310 is further configured to receive first configuration information, where the first configuration information is at least used to indicate a fourth SRS resource set, where the fourth SRS resource set corresponds to at least two purposes.
  • the usage parameter corresponding to the fourth SRS resource set indicates the at least two usages.
  • the usage parameter corresponding to the fourth SRS resource set includes at least two values, and the at least two values are respectively used to indicate the at least two usages.
  • the usage parameter corresponding to the fourth SRS resource set includes a second value, and the second value is used to indicate the at least two usages.
  • the fourth SRS resource set corresponds to at least two purposes including at least codebook-based uplink transmission and antenna switching.
  • the resource type corresponding to the fourth SRS resource set includes one of the following:
  • the communication unit 310 is further configured to receive second configuration information, where the second configuration information is at least used to indicate a fifth SRS resource set and a sixth SRS resource set, wherein the fifth SRS resource set corresponds to the first SRS resource set Three uses, the sixth SRS resource set corresponds to a fourth use, the third use and the fourth use are different uses, and the fifth SRS resource set and the sixth SRS resource set include at least one same SRS resource.
  • some or all power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
  • resource types corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
  • the fifth SRS resource set and the sixth SRS resource set include the same SRS resources; and/or,
  • the fifth SRS resource set and the sixth SRS resource set further include different SRS resources.
  • the fifth SRS resource set includes all SRS resources included in the sixth SRS resource set.
  • the third usage is antenna switching
  • the fourth usage is codebook-based uplink transmission.
  • the usage in the radio resource control RRC information field corresponding to the fifth SRS resource set is set to antenna switching, and the usage in the RRC information field corresponding to the sixth SRS resource set is set to codebook.
  • the terminal capability information is transmitted through terminal capability signaling.
  • the terminal capability information is transmitted through RRC signaling or medium access control control element MAC CE signaling.
  • 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 300 may correspond to the 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 for realizing the method shown in FIG. 5 .
  • the corresponding process of the terminal device in 200 is not repeated here for brevity.
  • FIG. 8 shows a schematic block diagram of a network device 400 according to an embodiment of the present application.
  • the network device 400 includes:
  • the communication unit 410 is configured to receive terminal capability information sent by a terminal device, where the terminal capability information is used to indicate that the terminal device supports at least one sounding reference signal SRS resource for at least two purposes.
  • the at least two uses include codebook based uplink transmission and antenna switching.
  • usage values corresponding to the at least two usages are codebook and antenna switching, respectively.
  • the at least two uses include at least two of beam management, non-codebook based uplink transmission, codebook based uplink transmission, and antenna switching.
  • the terminal capability information is also used to indicate the at least two uses.
  • the reporting granularity of the terminal capability information includes one of the following:
  • the at least one SRS resource includes a first SRS resource, where the first SRS resource is an SRS resource for any number of SRS ports.
  • the SRS resources in the at least one SRS resource are SRS resources for the target number of SRS ports.
  • the target number of SRS ports includes one SRS port and/or multiple SRS ports.
  • the terminal capability information includes a first information field, where the first information field is used to indicate the target SRS port number.
  • the terminal capability information respectively indicates that SRS resources corresponding to a plurality of SRS port numbers including the target SRS port number can be used for at least two purposes; or,
  • the terminal capability information respectively indicates whether SRS resources corresponding to a plurality of SRS port numbers including the target SRS port number can be used for at least two purposes.
  • the number of target SRS ports is less than or equal to the number of SRS ports corresponding to antenna switching supported by the terminal device, or the number of target SRS ports is less than or equal to the number of SRS ports corresponding to codebook-based uplink transmission supported by the terminal device Number of SRS ports.
  • the maximum value of the number of SRS ports is 4, or the maximum value of the number of SRS ports is 8.
  • the terminal device supports at least one SRS resource for at least two purposes, including:
  • the terminal device supports a first set of SRS resources for at least two purposes, wherein the first set of SRS resources includes at least the at least one SRS resource.
  • the usage parameter corresponding to the first SRS resource set indicates the at least two usages.
  • the usage parameter corresponding to the first SRS resource set includes at least two values, and the at least two values are respectively used to indicate the at least two usages.
  • the usage parameter corresponding to the first SRS resource set includes a first value, and the first value is used to indicate the at least two usages.
  • the terminal device supports at least one SRS resource for at least two purposes, including:
  • the terminal device supports multiple sets of SRS resources for at least two purposes, wherein each set of SRS resources in the multiple sets of SRS resources at least includes the at least one SRS resource.
  • the terminal device supports a plurality of first SRS resource sets, wherein each first SRS resource set includes the at least one SRS resource included in a group of SRS resources in the plurality of sets of SRS resources, and each The first SRS resource set corresponds to at least two purposes.
  • the terminal device supports at least one SRS resource for at least two purposes, including:
  • the terminal equipment supports the second SRS resource set and the third SRS resource set,
  • the second SRS resource set at least includes the at least one SRS resource, and the second SRS resource set corresponds to the first use
  • the third SRS resource set includes at least the at least one SRS resource
  • the third SRS resource set corresponds to
  • the first use and the second use are different uses
  • the second SRS resource set and the third SRS resource set include at least one same SRS resource.
  • the second SRS resource set and the third SRS resource set include the same SRS resources; and/or,
  • the second SRS resource set and the third SRS resource set further include different SRS resources.
  • the second SRS resource set includes all SRS resources included in the third SRS resource set.
  • the first usage is antenna switching
  • the second usage is codebook-based uplink transmission.
  • the communication unit 410 is further configured to send first configuration information to the terminal device, where the first configuration information is at least used to indicate a fourth SRS resource set, and the fourth SRS resource set corresponds to at least two purposes.
  • the usage parameter corresponding to the fourth SRS resource set indicates the at least two usages.
  • the usage parameter corresponding to the fourth SRS resource set includes at least two values, and the at least two values are respectively used to indicate the at least two usages.
  • the usage parameter corresponding to the fourth SRS resource set includes a second value, and the second value is used to indicate the at least two usages.
  • the fourth SRS resource set corresponds to at least two purposes including at least codebook-based uplink transmission and antenna switching.
  • the resource type corresponding to the fourth SRS resource set includes one of the following:
  • the communication unit 410 is further configured to send second configuration information to the terminal device, where the second configuration information is at least used to indicate a fifth SRS resource set and a sixth SRS resource set, wherein the fifth SRS resource The resource set corresponds to a third use, the sixth SRS resource set corresponds to a fourth use, the third use and the fourth use are different uses, and the fifth SRS resource set and the sixth SRS resource set include at least one of the same SRS resources.
  • some or all power-related parameters corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
  • resource types corresponding to the fifth SRS resource set and the sixth SRS resource set are the same.
  • the fifth SRS resource set and the sixth SRS resource set include the same SRS resources; and/or,
  • the fifth SRS resource set and the sixth SRS resource set further include different SRS resources.
  • the fifth SRS resource set includes all SRS resources included in the sixth SRS resource set.
  • the third usage is antenna switching
  • the fourth usage is codebook-based uplink transmission.
  • the usage in the radio resource control RRC information field corresponding to the fifth SRS resource set is set to antenna switching, and the usage in the RRC information field corresponding to the sixth SRS resource set is set to codebook.
  • the terminal capability information is transmitted through terminal capability signaling.
  • the terminal capability information is transmitted through RRC signaling or medium access control control element MAC CE signaling.
  • 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 network device 400 may correspond to the network device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the network device 400 are for realizing the method shown in FIG. 5 , respectively.
  • the corresponding process of the network device in 200 is not repeated here for brevity.
  • FIG. 9 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. 9 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 also include a memory 520 .
  • the processor 510 may call and run a computer program from the memory 520 to implement the methods in the embodiments of the present application.
  • the memory 520 may be a separate 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, may send information or data to other devices, or Receive information or data sent by other devices.
  • the transceiver 530 may include a transmitter and a receiver.
  • the transceiver 530 may further include antennas, and the number of the antennas may be one or more.
  • the communication device 500 may specifically be the network device of the embodiments of the present application, and the communication device 500 may implement the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.
  • the communication device 500 may specifically be the terminal device of the embodiments of the present application, and the communication device 500 may implement the corresponding processes implemented by the terminal device in each method of the embodiments of the present application. Repeat.
  • FIG. 10 is a schematic structural diagram of an apparatus according to an embodiment of the present application.
  • the apparatus 600 shown in FIG. 10 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 this embodiment of the present application.
  • the apparatus 600 may also include a memory 620 .
  • the processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments of the present application.
  • the memory 620 may be a separate device independent of the processor 610 , or may be integrated in the processor 610 .
  • the apparatus 600 may also include an input interface 630 .
  • the processor 610 may control the input interface 630 to communicate with other devices or chips, and specifically, may acquire information or data sent by other devices or chips.
  • the apparatus 600 may also include an output interface 640 .
  • the processor 610 can control the output interface 640 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.
  • the apparatus may be applied to the network equipment in the embodiments of the present application, and the apparatus may implement the corresponding processes implemented by the network equipment in each method of the embodiments of the present application, which is not repeated here for brevity.
  • the apparatus can be applied to the terminal equipment in the embodiments of the present application, and the apparatus can implement the corresponding processes implemented by the terminal equipment in each method of the embodiments of the present application, which is not repeated here for brevity.
  • the devices mentioned in the embodiments of the present application may also be chips.
  • it can be a system-on-chip, a system-on-a-chip, a system-on-a-chip, or a system-on-a-chip.
  • FIG. 11 is a schematic block diagram of a communication system 700 provided by an embodiment of the present application. As shown in FIG. 11 , the communication system 700 includes a terminal device 710 and a network device 720 .
  • the terminal device 710 can be used to implement the corresponding functions implemented by the terminal device in the above method
  • the network device 720 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .
  • the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability.
  • each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction 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 Programming 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 conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art.
  • 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 this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be Random Access Memory (RAM), which acts as an external cache.
  • RAM Static RAM
  • DRAM Dynamic RAM
  • SDRAM Synchronous DRAM
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • synchronous link dynamic random access memory Synchlink DRAM, SLDRAM
  • 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) and so on. That is, the memory in the embodiments of the present application is intended to include but not limited to these and any other suitable types of memory.
  • Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.
  • the computer-readable storage medium may be applied to the network device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For brevity, It is not repeated here.
  • the computer-readable storage medium may 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 terminal device in each method of the embodiments of the present application. For brevity, It is not repeated here.
  • Embodiments of the present application also provide a computer program product, including computer program instructions.
  • the computer program product may be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application.
  • the computer program product may 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 terminal device in each method of the embodiments of the present application.
  • the computer program instructions cause the computer to execute the corresponding processes implemented by the terminal device in each method of the embodiments of the present application.
  • the embodiments of the present application also provide a computer program.
  • the computer program may be applied to the network device in the embodiments of the present application, and when the computer program runs on the computer, the computer executes the corresponding processes implemented by the network device in each method of the embodiments of the present application, For brevity, details are not repeated here.
  • the computer program may be applied to the terminal device in the embodiments of the present application, and when the computer program runs on the computer, the computer executes the corresponding processes implemented by the terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus 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 may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

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  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande concerne un procédé de communication sans fil, un dispositif terminal, et un dispositif de réseau. Le dispositif terminal prend en charge au moins une ressource SRS pour au moins deux objectifs, ce qui permet de réduire les surcharges de ressources temps-fréquence correspondant à une ressource SRS. Le procédé de communication sans fil comprend : un dispositif terminal envoyant des informations de capacité de terminal, les informations de capacité de terminal étant utilisées pour indiquer que le dispositif terminal prend en charge au moins une ressource de SRS pour au moins deux objectifs.
PCT/CN2021/091393 2021-03-12 2021-04-30 Procédé de communication sans fil, dispositif terminal et dispositif de réseau WO2022188253A1 (fr)

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