WO2025180318A1 - 探测参考信号srs的传输方法、通信装置和通信设备 - Google Patents

探测参考信号srs的传输方法、通信装置和通信设备

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Publication number
WO2025180318A1
WO2025180318A1 PCT/CN2025/078731 CN2025078731W WO2025180318A1 WO 2025180318 A1 WO2025180318 A1 WO 2025180318A1 CN 2025078731 W CN2025078731 W CN 2025078731W WO 2025180318 A1 WO2025180318 A1 WO 2025180318A1
Authority
WO
WIPO (PCT)
Prior art keywords
srs
reference signal
downlink reference
target
information
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2025/078731
Other languages
English (en)
French (fr)
Other versions
WO2025180318A9 (zh
Inventor
王鹏飞
杨坤
宋扬
孙荣荣
袁江伟
吴昊
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.)
Vivo Mobile Communication Co Ltd
Original Assignee
Vivo Mobile Communication Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Vivo Mobile Communication Co Ltd filed Critical Vivo Mobile Communication Co Ltd
Publication of WO2025180318A1 publication Critical patent/WO2025180318A1/zh
Publication of WO2025180318A9 publication Critical patent/WO2025180318A9/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • 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
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows

Definitions

  • the embodiments of the present application relate to the field of communications, and in particular to a method, a communication apparatus, and a communication device for transmitting a sounding reference signal (SRS).
  • SRS sounding reference signal
  • a sounding reference signal can be associated with an associated channel state information reference signal (CSI-RS).
  • the terminal can calculate the precoding information of the SRS based on the CSI-RS associated with the SRS, and then transmit the SRS based on the precoding information.
  • the network-side device can perform uplink channel measurement based on the SRS and configure appropriate uplink transmission parameters for the terminal according to the measurement results to ensure the uplink transmission performance of the terminal.
  • a terminal supports connecting to multiple Transmission Reception Points (TRPs), which can perform coherent joint transmission (CJT) and coherent joint reception (CJR) to serve the terminal.
  • TRPs Transmission Reception Points
  • CJT coherent joint transmission
  • CJR coherent joint reception
  • the embodiments of the present application provide a sounding reference signal (SRS) transmission method, a communication apparatus, and a communication device, which can improve the accuracy of calculated SRS precoding information and ensure uplink transmission performance.
  • SRS sounding reference signal
  • a method for transmitting a sounding reference signal comprising:
  • the terminal obtains an association relationship between an SRS and a downlink reference signal, wherein one SRS is associated with one downlink reference signal set, and one downlink reference signal set includes at least one downlink reference signal;
  • the terminal determines, according to a downlink reference signal set associated with a target SRS to be sent, precoding information of the target SRS;
  • the terminal sends the target SRS using the precoding information.
  • a method for transmitting a sounding reference signal comprising:
  • the network-side device indicates to the terminal an association relationship between the SRS and the downlink reference signal, wherein one SRS is associated with one downlink reference signal set, and one downlink reference signal set includes at least one downlink reference signal;
  • the network-side device receives a target SRS sent by the terminal, wherein precoding information of the target SRS is determined according to a downlink reference signal set associated with the target SRS.
  • a communication device including:
  • a processing unit configured to obtain an association relationship between an SRS and a downlink reference signal, wherein one SRS is associated with one downlink reference signal set, and one downlink reference signal set includes at least one downlink reference signal; and determine precoding information of a target SRS to be transmitted based on the downlink reference signal set associated with the target SRS;
  • a communication unit is configured to send the target SRS using the precoding information.
  • a communication device including:
  • a communication device which terminal includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.
  • a readable storage medium on which a program or instruction is stored.
  • the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.
  • a wireless communication system including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the method described in the first aspect, and the network side device can be used to execute the steps of the method described in the second aspect.
  • a chip comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.
  • a computer program/program product is provided, which is stored in a storage medium and executed by at least one processor to implement the steps of the method described in the first aspect or the steps of the method described in the second aspect.
  • an SRS can be associated with one or more downlink reference signals.
  • the terminal can calculate the precoding information of the target SRS to be sent based on the downlink reference signal associated with the target SRS, thereby obtaining more accurate precoding information and sending the target SRS based on the precoding information. This is conducive to ensuring that the network side equipment performs accurate uplink channel measurement based on the target SRS, and then configures appropriate uplink transmission parameters to ensure uplink transmission performance.
  • FIG1 is a schematic diagram of a communication system provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of a non-codebook based PUSCH transmission process.
  • FIG3 shows a schematic diagram of a flexible duplex mode.
  • FIG4 is a schematic diagram of a method for transmitting a sounding reference signal (SRS) provided in an embodiment of the present application.
  • SRS sounding reference signal
  • FIG5 is a schematic diagram of a scenario applicable to an embodiment of the present application.
  • FIG6 is a schematic diagram of a mapping relationship between a subarray and a reference signal provided in an embodiment of the present application.
  • FIG7 is a schematic diagram of time resources associated with an SRS resource group configuration or a CSI-RS set provided in an embodiment of the present application.
  • FIG10 is a schematic diagram of a communication device provided in an embodiment of the present application.
  • FIG11 is a hardware structure diagram of a terminal provided in an embodiment of the present application.
  • FIG12 is a hardware structure diagram of a network-side device provided in an embodiment of the present application.
  • first, second, etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by “first” and “second” are generally of the same type, and do not limit the number of objects, for example, the first object can be one or more.
  • “or” in this application represents at least one of the connected objects. For example, “A or B” covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B.
  • the character "/" generally indicates that the objects associated before and after are in an "or” relationship.
  • indication in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication).
  • a direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent;
  • an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • 6G 6th Generation
  • FIG1 shows a block diagram of a wireless communication system applicable to embodiments of the present application.
  • the wireless communication system includes a terminal 11 and a network-side device 12 .
  • the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR), a virtual reality (VR) device, a robot, a wearable device (Wearable Device), a flight vehicle, a vehicle user equipment (VUE), a ship-borne equipment, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (PC), an ATM or a self-service machine and other terminal-side devices.
  • PC personal computer
  • ATM an ATM or a self-service machine and other terminal
  • Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • the vehicle-mounted device can also be called a vehicle-mounted terminal, vehicle-mounted controller, vehicle-mounted module, vehicle-mounted component, vehicle-mounted chip or vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application.
  • a terminal may also be referred to as user equipment (UE), terminal equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.
  • UE user equipment
  • terminal equipment access terminal
  • user unit user station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user terminal
  • terminal wireless communication equipment
  • user agent or user device etc.
  • the network side equipment 12 may include access network equipment or core network equipment, wherein the access network equipment may also be referred to as radio access network (RAN) equipment, radio access network function or radio access network unit.
  • the access network equipment may include a base station, a wireless local area network (WLAN) access point (AP) or a wireless fidelity (WiFi) node, etc.
  • WLAN wireless local area network
  • WiFi wireless fidelity
  • the base station may be referred to as a node B (NB), an evolved node B (eNB), the next generation node B (gNB), a new radio node B (NR Node B), an access point, a relay station (RBS), a serving base station (SBS), a base transceiver station (BTS), a radio base station, a radio transceiver, a base The Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmission Reception Point (TRP) or other appropriate terms in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of the present application, only the base station in the NR system is introduced as an example, and the specific type of the base station is not limited.
  • PUSCH physical uplink shared channel
  • PUSCH transmission modes include codebook and non-codebook.
  • the terminal In non-codebook uplink transmission (UL), the terminal does not rely on a pre-existing codebook for PUSCH transmission. Instead, it uses the associated Channel State Information Reference Signal (CSI-RS) to calculate the precoder and adjust the PUSCH transmission accordingly.
  • CSI-RS Channel State Information Reference Signal
  • Non-codebook PUSCH transmission is usually used when the uplink and downlink channels are reciprocal, such as in the time division duplex (TDD) scenario.
  • the general process includes: the terminal calculates the downlink precoding codeword based on the downlink CSI-RS measurement result, and uses the downlink precoding codeword for uplink SRS transmission based on the reciprocity of the uplink and downlink channels; the base station selects one or more SRS resources (SRS resource) based on the received uplink precoded sounding reference signal (precoded SRS), and notifies the terminal through the SRS resource indicator (SRI).
  • the number of SRI resources is the rank of the uplink transmission; the terminal uses the corresponding precoding codeword to perform PUSCH transmission according to the instruction of the base station.
  • FIG2 shows a non-codebook based PUSCH transmission process.
  • Step 1 The UE reports UE capability information (UeCapabilityInformation), including, for example, the maximum number of layers supported (max layer).
  • Step 2 The base station configures an SRS resource set for the UE.
  • the SRS resource set configuration is configured via RRC reconfiguration messages.
  • the UE is configured with up to four SRS resources (depending on UE capabilities).
  • the associated CSI-RS is configured in the SRS resource set at the Radio Resource Control (RRC) layer, allowing the UE to infer the UL channel from the DL channel and calculate the SRS precoder.
  • RRC Radio Resource Control
  • Step 3 Precoded SRS transmission.
  • Step 4 The base station selects appropriate SRS resources based on the SRS received in step 3.
  • the rank is the number of SRS resources selected by the base station.
  • the base station notifies the UE of specific uplink transmission parameters, such as the SRI and the Demodulation Reference Signal (DMRS) port, via Downlink Control Information (DCI).
  • specific uplink transmission parameters such as the SRI and the Demodulation Reference Signal (DMRS) port, via Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • Step 5 The UE transmits PUSCH according to the DCI.
  • the cell-free massive MIMO (Multiple-Input Multiple-Output) system eliminates the concept of cells in traditional massive MIMO systems. Instead of being deployed at the same macro base station, a large number of antennas are dispersed over a wide area. UEs can also be dispersed over this wide area. These antennas are called Transmitter Relays (TRPs) or Access Points (APs), or they can be considered subarrays of a large antenna array on the network side. In theory, each UE can communicate with each TRP/subarray. With the help of the fronthaul network and the Central Processing Unit (CPU), a large number of geographically dispersed TRPs can jointly serve a smaller number of UEs. The CPU uses channel statistics for joint detection. It is expected to be applied to next-generation indoor and hotspot coverage scenarios, such as smart factories, train stations, shopping malls, stadiums, subways, hospitals, community centers, or university campuses.
  • next-generation indoor and hotspot coverage scenarios such as smart factories, train stations, shopping malls
  • TRP networks Traditional deployment of multiple TRP networks usually adopts TDD transmission mode and assumes that the uplink and downlink time slot configurations of each TRP in the network are the same.
  • the network side can determine the uplink and downlink time slot configuration parameters based on the overall uplink and downlink traffic requirements in the entire Cell-free network.
  • each Transmitted Resource Plane (TRP) TRP is configured with different uplink and downlink timeslots, allowing both uplink and downlink data transmission within the same time and frequency resources.
  • TRP Transmitted Resource Plane
  • the uplink and downlink timeslot configurations of the TRP remain unchanged.
  • the disadvantage is that there will be cross-link interference (CLI) between different TRPs, that is, the TRP in the downlink time slot will cause cross-link interference between TRPs to the TRP in the uplink time slot at the same time, and the UE in the uplink time slot will cause cross-link interference between UEs to the UE in the downlink time slot at the same time.
  • CLI cross-link interference
  • the CPU in the Cell-free network can control each TRP to achieve more accurate CLI measurement, and by optimizing the UE-TRP connection relationship and network-side beamforming, the impact of CLI is effectively reduced.
  • the base station determines the content of TRP1's downlink signal.
  • TRP2 receives TRP1's downlink signal and can estimate the interference channel between TRP1 and TRP2 through the reference signals such as DMRS carried therein. Through baseband signal processing, the interference of TRP1's downlink signal is eliminated from the TRP2 received signal.
  • a flexible duplexing scheme is being considered: non-overlapping sub-band full duplex (SBFD) on the network side, where uplink and downlink transmissions can occur simultaneously at different frequency locations at the same time.
  • SBFD sub-band full duplex
  • a guard band can be reserved between the frequency locations (corresponding to the duplex subbands) corresponding to different transmission directions; and half-duplex on the terminal side, which, consistent with TDD, allows only uplink or downlink transmissions at the same time, not both. Understandably, in this duplexing scheme, uplink and downlink transmissions on the network side at the same time can only be directed to different terminals, meaning the terminals are still half-duplex.
  • Figure 3 shows a schematic diagram of flexible duplexing.
  • the network semi-statically divides the frequency domain of a single carrier into three duplex subbands. Downlink subbands are located on either side of the carrier, while the center is an uplink subband. This reduces interference with adjacent carriers.
  • UE1 and UE2 transmit in uplink and receive in downlink, respectively, in half-duplex mode.
  • sub-band full-duplex assumes that the uplink and downlink use different sub-bands of a carrier in the same time period; full-duplex cell-free network assumes that different TRPs operate on the same sub-band/frequency resources.
  • the precoded SRS transmitted by the UE supports association with only a single CSI-RS, not with multiple CSI-RSs.
  • CJR network-side coherent joint reception
  • TRPs Transmitted Receiving Points
  • the network-side device has a small number of ports for uplink reception, it is necessary to consider the configuration of associating the SRS with multiple CSI-RSs, and to support the association of multiple SRS groups with CSI-RS sets and multiple SRS transmission configurations. For example, the TRP clusters for UL joint reception in different slots can be different. Therefore, the UE needs to pre-calculate different SRS precoders based on the associations of multiple SRS groups with CSI-RS sets and feed back multiple precoded SRS groups for subsequent scheduling by the network.
  • SRS sounding reference signal
  • FIG4 is a schematic diagram of a method for transmitting a sounding reference signal (SRS) according to an embodiment of the present application. As shown in FIG4 , the method 400 includes at least part of the following:
  • the terminal obtains an association relationship between an SRS and a downlink reference signal, where one SRS is associated with one downlink reference signal set, and one downlink reference signal set includes at least one downlink reference signal;
  • the terminal determines precoding information of the target SRS to be sent according to a downlink reference signal set associated with the target SRS;
  • S430 The terminal sends the target SRS using the precoding information.
  • the downlink reference signal in the embodiments of the present application may include, for example, CSI-RS, synchronization signal block (Synchronization Signal Block, SSB), phase tracking reference signal (Phase Tracking Reference Signal, PTRS) or demodulation reference signal (Demodulation Reference Signal, DMRS), and may also include other downlink reference signals, which is not limited in the present application.
  • CSI-RS synchronization signal block
  • PTRS Phase Tracking Reference Signal
  • DMRS demodulation Reference Signal
  • a downlink reference signal and a TRP are associated.
  • the information or signal is associated with the TRP associated with the downlink reference signal.
  • the information or signal is associated with the downlink reference signal associated with the TRP.
  • an SRS is associated with a downlink reference signal
  • the SRS is associated with the TRP associated with the downlink reference signal
  • the SRS is associated with the reference signal associated with the TRP.
  • the association between the SRS and the downlink reference signal may be periodically, semi-statically, or statically configured.
  • the network device may configure a valid time or period corresponding to the association between the SRS and the downlink reference signal, during which the association between the SRS and the downlink reference signal remains unchanged.
  • the valid time or period may be predefined.
  • the present application does not limit the unit of the effective time or period.
  • the length of the effective time or period may be the length of at least one time unit.
  • the time unit may be a wireless frame, a subframe, a time slot, an orthogonal frequency-division multiplexing (OFDM) symbol, etc. The present application does not limit this.
  • the association between the SRS and the downlink reference signal may be dynamically configured.
  • the association between the SRS and the downlink reference signal may be dynamically configured by a network-side device through downlink signaling.
  • the downlink signaling may be a Radio Resource Control (RRC) message, a Media Access Control (MAC) CE, or downlink control information (DCI).
  • RRC Radio Resource Control
  • MAC Media Access Control
  • DCI downlink control information
  • the association relationship between the downlink reference signal and the TRP may mean that the TRP is mapped to the downlink reference signal, or that the TRP supports sending the downlink reference signal.
  • the association relationship between the SRS and the downlink reference signal may mean that precoding information of the SRS may be determined according to the downlink reference signal, for example, the precoding information of the SRS may be calculated using a measurement result of the downlink reference signal.
  • the association relationship between the SRS and the downlink reference signal can be explicitly configured (or directly configured), or can be implicitly configured (or indirectly configured).
  • the network side device can directly indicate the association relationship between the SRS and the downlink reference signal, or can also indicate another association relationship, and the terminal can determine the association relationship between the SRS and the downlink reference signal based on the other association relationship.
  • the terminal obtaining the association relationship between the SRS and the downlink reference signal may include the terminal obtaining the association relationship between multiple SRSs and downlink reference signals, a first part of the multiple SRSs may be associated with a first downlink reference signal set, and a second part of the multiple SRSs is associated with a second downlink reference signal set, wherein the first downlink reference signal set includes one downlink reference signal, and the second downlink reference signal set includes multiple downlink reference signals.
  • some SRSs are associated with only one CSI-RS, while some SRSs are associated with multiple CSI-RSs.
  • the one downlink reference signal set including at least one downlink reference signal includes:
  • the one downlink reference signal set includes multiple downlink reference signals; or,
  • a first part of the multiple SRSs is associated with a first downlink reference signal set, and a second part of the multiple SRSs is associated with a second downlink reference signal set, wherein the first downlink reference signal set includes one downlink reference signal, and the second downlink reference signal set includes multiple downlink reference signals.
  • the terminal may obtain the association relationship between the SRS and the downlink reference signal by:
  • the terminal acquires a first mapping relationship, where the first mapping relationship represents a port mapping relationship between an SRS and a downlink reference signal;
  • An association relationship between the SRS and a downlink reference signal is determined according to the first mapping relationship.
  • the terminal acquiring the first mapping relationship may include:
  • the terminal receives a first mapping relationship from a network-side device.
  • the network-side device indicates the first mapping relationship via downlink signaling.
  • the downlink signaling may include, but is not limited to, at least one of the following: an RRC message, a MAC CE, or a DCI.
  • the first mapping relationship may be included in a Transmission Configuration Indicator (TCI) status indication.
  • TCI Transmission Configuration Indicator
  • the first mapping relationship may be included as part of the TCI status.
  • the first mapping relationship may also be predefined.
  • the terminal determines, according to the first mapping relationship, an association relationship between the SRS and a downlink reference signal, including:
  • the downlink reference signal corresponding to the port to which the SRS is mapped is determined as the downlink reference signal associated with the SRS.
  • the terminal may obtain the association relationship between the SRS and the downlink reference signal by:
  • the terminal receives first configuration information from a network-side device, where the first configuration information is used to indicate K SRS resource group (SRS-ResourceSet) configurations, wherein an SRS in each SRS resource group configuration is associated with a downlink reference signal set, and K is a positive integer.
  • SRS-ResourceSet K SRS resource group
  • an SRS resource group configuration may include an associated downlink reference signal indication, such as an associated CSI-RS (associated CSI-RS) indication, for indicating a downlink reference signal set associated with the SRS in the SRS resource group configuration, where the downlink reference signal set may include one or more downlink reference signals.
  • the associated downlink reference signal indication in the kth SRS resource group configuration among the K SRS resource group configurations includes N k downlink reference signals, such as N k CSI-RSs.
  • the first configuration information may be periodically configured or semi-statically configured.
  • the method 400 further includes:
  • the terminal receives first indication information from the network device, where the first indication information is used to indicate a validity period or period of the first configuration information. Specifically, the validity period or period of the K SRS resource group configurations. During the validity period or period of the first configuration information, the first configuration information remains unchanged. For example, for periodic uplink channel measurement, the network device may instruct the terminal to use the same first configuration information during the validity period or period, and to update the first configuration information after the validity period or period.
  • the first indication information may be sent via an RRC message.
  • the first indication information is included in the first configuration information. That is, when the network side device indicates the configuration of the K SRS resource groups, it also configures the valid time or period of the configuration of the K SRS resource groups.
  • the terminal when the valid time or period of the first configuration information expires (in this case, the first configuration information can be considered invalid), the terminal sends a first message to the network side device to request to update the first configuration information. In response to the first message, the network side device sends a second message to the terminal, and the second message includes the updated first configuration information.
  • the first message may include the uplink and downlink transmission requirements of the terminal, that is, the terminal may use the uplink and downlink transmission requirement request message to request the network side device to update the first configuration information.
  • the validity period or period of the updated first configuration information may be carried in the second message. That is, when the network side device configures the first configuration information for the terminal, it also configures the validity period or period of the first configuration information.
  • the first configuration information may be dynamically configured.
  • the method 400 further includes:
  • the terminal receives first downlink signaling from the network device side device, where the first downlink signaling is used to indicate updated first configuration information;
  • the terminal updates the first configuration information according to the first downlink signaling.
  • the first downlink signaling may be DCI, MAC CE, RRC message, etc.
  • each SRS resource group configuration is used for transmission of the SRS in the SRS resource group configuration.
  • the SRS resource group configuration is used to configure SRS resources for SRS transmission.
  • the SRSs in the same SRS resource group configuration constitute an SRS group.
  • An SRS group includes one or more SRSs.
  • the SRSs in an SRS group are transmitted using the SRS resources configured in the same SRS resource group configuration.
  • the SRS in the SRS resource group configuration is associated with a downlink reference signal set, which can be understood as a group of SRSs in the SRS resource group configuration are all associated with the downlink reference signal set, or, it can also be understood as the SRS resource group configuration and the downlink reference signal set have an association relationship, that is, the K SRS resource group configurations are associated with K downlink reference signal sets, wherein each SRS resource group configuration is associated with a downlink reference signal set.
  • each of the K SRS resource group configurations corresponds to an index information (or SRS group index, SRS resource group configuration index), which can be used to indicate the SRS resource group configuration, or the downlink reference signal set associated with the SRS resource group configuration.
  • the method 400 further includes:
  • the terminal receives second configuration information from the network side device, and the second configuration information is used to configure the target number M of SRS groups sent by the terminal (recorded as method one), or the target SRS group index set (recorded as method two), wherein the target SRS group index set includes M SRS group indexes, and each SRS group index is used to indicate an SRS resource group configuration and/or a downlink reference signal set.
  • the network side device when the second configuration information indicates a target SRS group index set, it can be considered that the network side device triggers the SRS resource group configuration associated with the target SRS group index set, or triggers the transmission of the SRS in the SRS resource group configuration.
  • the second configuration information may also indicate an SRS resource index in the triggered SRS resource group configuration.
  • the network side device may trigger the entire SRS resource group configuration (in this case, it can be considered that all SRS resources in the SRS resource group configuration are triggered), or may also trigger part of the SRS resources in the SRS resource group configuration.
  • the second configuration information may be periodically configured or semi-statically configured.
  • the method 400 further includes:
  • the terminal receives second indication information from the network device side device, where the second indication information is used to indicate a valid period or period of the second configuration information, that is, a valid period or period of the target group number M or the target SRS group index set. During the valid period or period of the second configuration information, the second configuration information remains unchanged.
  • the second indication information may be sent via an RRC message.
  • the second indication information is included in the second configuration information. That is, when the network side device indicates the second configuration information, it also configures the validity period or period of the second configuration information.
  • the terminal when the valid time or period of the second configuration information expires (in this case, the second configuration information can be considered invalid), the terminal sends a third message to the network side device to request to update the second configuration information. In response to the second message, the network side device sends a fourth message to the terminal, and the fourth message includes the updated second configuration information.
  • the fourth message may include the uplink and downlink transmission requirements of the terminal, that is, the terminal may use the uplink and downlink transmission requirement request message to request the network side device to update the second configuration information.
  • the validity period or period of the updated second configuration information may be carried in the fourth message. That is, when the network side device configures the second configuration information for the terminal, it also configures the validity period or period of the second configuration information.
  • the second configuration information may be dynamically configured.
  • the method 400 further includes:
  • the terminal receives second downlink signaling from the network device side device, where the second downlink signaling is used to indicate updated second configuration information;
  • the terminal updates the second configuration information according to the second downlink signaling.
  • the second downlink signaling can be DCI, MAC CE, RRC message, etc.
  • the target SRS when the second configuration information is used to configure the target number of SRS groups sent by the terminal to be M, the target SRS may include M groups of SRS, and the M groups of SRS are sent using SRS resources in M SRS resource group configurations.
  • the precoding information of the target SRS is determined based on M downlink reference signal sets, wherein the M downlink reference signal sets are downlink reference signal sets associated with the M SRS resource group configurations.
  • the terminal can select M SRS resource group configurations (for example, the first M, or the last M, etc.) from K SRS resource group configurations according to predefined rules as the SRS resource group configurations associated with the target SRS, and then determine the precoding information of the target SRS based on the downlink reference signal set associated with the M SRS resource group configurations, and/or send the target SRS based on the SRS resources in the M SRS resource group configurations.
  • M SRS resource group configurations for example, the first M, or the last M, etc.
  • the terminal can select M downlink reference signal sets from K downlink reference signal sets according to predefined rules as downlink reference signal sets associated with the target SRS, determine the precoding information of the target SRS based on the M downlink reference signal sets, and then send the target SRS based on the precoding information. It can also use the SRS resources in the M SRS resource group configurations associated with the M downlink reference signal sets to send the target SRS.
  • the terminal may select M downlink reference signal sets from the K downlink reference signal sets based on reception performance of the K downlink reference signal sets associated with the K SRS resource group configurations, for example, perform joint measurement on each of the K downlink reference signal sets to determine a joint measurement result for each downlink reference signal set, and determine M downlink reference signal sets based on the joint measurement results of the K downlink reference signal sets.
  • the M downlink reference signal sets are the M downlink reference signal sets with the best joint measurement results.
  • the joint measurement result may include but is not limited to one of the following indications:
  • RSRP Reference Signal Receiving Power
  • RSRQ Reference Signal Receiving Quality
  • SINR Signal to Interference plus Noise Ratio
  • RSSI Received Signal Strength Indication
  • the target SRS group index set may include M SRS group indexes, used to indicate M SRS resource group configurations or M downlink reference signal sets, then the target SRS may include M groups of SRS in the M SRS resource group configurations, or, include M groups of SRS associated with the M downlink reference signal sets, the target SRS may be sent based on the SRS resources in the M SRS resource group configurations, and the precoding information of the target SRS may be determined based on the M downlink reference signal sets.
  • the terminal can determine the M SRS resource group configurations indicated by the target SRS group index set as the SRS resource group configuration associated with the target SRS, and further can send the target SRS based on the SRS resources in the M SRS resource group configurations, for example, according to the SRS resources in each SRS resource group configuration in the M SRS resource group configurations, send a group of SRS in the SRS resource group configuration.
  • the terminal can determine the M downlink reference signal sets indicated by the target SRS group index set as the downlink reference signal sets associated with the target SRS, and further can determine the precoding information of the target SRS based on the M downlink reference signal sets, and then use the precoding information to send the target SRS.
  • the network device does not indicate the SRS resource group configuration or downlink reference signal set associated with the target SRS.
  • the terminal needs to determine the SRS resource group configuration associated with the target SRS to determine the SRS resources used to transmit the target SRS, and/or determine the downlink reference signal set associated with the target SRS to determine the precoding information of the target SRS.
  • the terminal may determine the downlink reference signal set associated with the target SRS or the SRS resource group configuration associated with the target SRS according to the first information.
  • the terminal can determine the downlink reference signal set associated with the target SRS or the SRS resource group configuration associated with the target SRS based on the first information.
  • the first information includes at least one of the following:
  • downlink reference signal grouping information where the downlink reference signals in a group support joint transmission
  • the uplink and downlink timeslot configuration (or, the uplink and downlink timeslot format) of at least one transmit/receive point (TRP);
  • the uplink and downlink time slot configuration associated with the downlink reference signal (or, the uplink and downlink time slot format);
  • Radio channel properties of at least one downlink reference signal are Radio channel properties of at least one downlink reference signal.
  • the first information may be indicated by a network-side device or obtained by terminal measurement.
  • a radio channel attribute of a downlink reference signal may be obtained by terminal measurement.
  • the downlink reference signal restriction information includes at least one of a mandatory downlink reference signal, an optional downlink reference signal, and an unavailable downlink reference signal.
  • the downlink reference signal set associated with the target SRS must include mandatory downlink reference signals and exclude unavailable downlink reference signals. Optionally, it may also include optional downlink reference signals.
  • the TRP restriction information includes at least one of a mandatory TRP, an optional TRP, and an unavailable TRP.
  • the target SRS-associated downlink reference signal set must include downlink reference signals associated with the mandatory TRP and exclude downlink reference signals associated with the unavailable TRP. Optionally, it may also include downlink reference signals associated with the optional TRP.
  • the wireless channel attribute includes at least one of the following:
  • Doppler spread Doppler shift, average delay, delay spread, average gain, spatial receiver parameters.
  • the average gain of the at least one downlink reference signal represents an average value of the channel gains of the at least one downlink reference signal.
  • the grouping information of the downlink reference signal may be indicated by a network-side device, wherein a group may include one or more downlink reference signals.
  • the association between a subarray and a downlink reference signal may be indicated by a network-side device.
  • a subarray may be associated with one or more downlink reference signals.
  • the multiple downlink reference signals may correspond to different beam directions.
  • the grouping of the downlink reference signal can be considered as a grouping of the TRP, and the TRP in one group supports joint transmission.
  • the first information includes grouping information of a downlink reference signal/TRP.
  • the terminal may select one or more downlink reference signals in each group in at least one group according to the grouping information of the downlink reference signal/TRP to form a downlink reference signal set associated with the target SRS.
  • determining, based on the first information, a downlink reference signal set associated with the target SRS or an SRS resource group configuration associated with the target SRS includes:
  • the downlink reference signal set associated with the target SRS includes the target downlink signal in each group, or the SRS resource group configuration associated with the target SRS is determined based on the downlink reference signal set associated with the target SRS.
  • the SRS resource group configuration associated with the downlink reference signal set associated with the target SRS is determined as the SRS resource group configuration associated with the target SRS.
  • the grouping of the downlink reference signal/TRP can be determined according to the uplink and downlink time slot configuration associated with the downlink reference signal/TRP.
  • the terminal is connected to TRP1, TRP2, and TRP3.
  • the downlink reference signal set supported by the network side device is ⁇ CSI-RS#1, CSI-RS#2, CSI-RS#3 ⁇ .
  • the TRP set associated with this downlink reference signal set is ⁇ TRP1, TRP2, TRP3 ⁇ , where CSI-RS#1 is associated with TRP1, CSI-RS#2 is associated with TRP2, and CSI-RS#3 is associated with TRP3.
  • the uplink and downlink time slot format of TRP1 is uplink and downlink time slot format #1, that is, DDDSU, or in other words, CSI-RS#1 is associated with (TRP1's) uplink and downlink time slot format #1, i.e., DDDSU; the uplink and downlink time slot format of TRP2 is uplink and downlink time slot format #2, i.e., DSUUU, or in other words, CSI-RS#2 is associated with (TRP2's) uplink and downlink time slot format #2, i.e., DSUUU; the uplink and downlink time slot format of TRP3 is uplink and downlink time slot format #3, i.e., DDSUU, or in other words, CSI-RS#3 is associated with (TRP3's) uplink and downlink time slot format #3, i.e., DDSUU, and the uplink and downlink time slots of the terminal are configured as uplink and downlink time slot format #4, i.
  • the TRP groups supporting joint transmission include ⁇ TRP2, TRP3 ⁇ , which are associated with the first CSI-RS group ⁇ CSI-RS#1, CSI-RS#3 ⁇ ; in the second uplink time period (slot5), the TRP groups supporting joint transmission include ⁇ TRP1, TRP2, TRP3 ⁇ , which are associated with the second CSI-RS group ⁇ CSI-RS#1, CSI-RS#2, CSI-RS#3 ⁇ .
  • the terminal may measure each CSI-RS in the first CSI-RS group, select the target CSI-RS in the first CSI-RS group, such as the two CSI-RSs with the highest signal quality, measure each CSI-RS in the second CSI-RS group, and select the target CSI-RS in the second CSI-RS group, such as the one CSI-RS with the highest signal quality.
  • the target CSI-RSs selected in each CSI-RS group are formed into a first CSI-RS set, and the first CSI-RS set is used as the CSI-RS set associated with the target SRS set. If the first CSI-RS set is associated with the first SRS resource group configuration among K SRS resource group configurations, the first SRS resource group configuration is determined as the SRS resource group configuration associated with the target SRS.
  • Embodiment 2 The first information includes an association relationship between a subarray and a downlink reference signal.
  • the terminal may select a target subarray from at least one subarray based on the association between the subarray and the downlink reference signal, and determine a downlink reference signal set associated with the target SRS based on the downlink reference signal associated with the target subarray.
  • determining, based on the first information, a downlink reference signal set associated with the target SRS or an SRS resource group configuration associated with the target SRS includes:
  • the target SRS-associated downlink reference signal set includes the target subarray-associated downlink reference signal, or the target SRS-associated SRS resource group configuration is determined according to the target SRS-associated downlink reference signal set.
  • a large antenna array of a network-side device includes multiple subarrays, each subarray corresponding to one or more downlink reference signals.
  • the terminal can measure the multiple subarrays and determine a target subarray based on the measurement results of the multiple subarrays, where the target subarray can include one or more subarrays.
  • the target subarray is determined based on the measurement results of the multiple subarrays and a first threshold.
  • a subarray whose measurement result is greater than or equal to the first threshold is determined to be the target subarray.
  • the first threshold can be an RSRP threshold, an RSRQ threshold, an SINR threshold, or an RSSI threshold.
  • a downlink reference signal set associated with a target SRS can be determined based on the downlink reference signal associated with the target subarray.
  • the downlink reference signal set associated with the target SRS can be determined to include the downlink reference signal associated with the target subarray.
  • an SRS resource group configuration associated with the target SRS can be determined based on the downlink reference signal set associated with the target SRS.
  • the SRS resource group configuration associated with the downlink reference signal set associated with the target SRS can be determined as the SRS resource group configuration associated with the target SRS.
  • the large antenna array of the network-side device includes four sub-arrays ⁇ #1, #2, #3, #4 ⁇ , corresponding to ⁇ CSI-RS#1, CSI-RS#2, CSI-RS#3, CSI-RS#4 ⁇ . Due to obstruction by obstacles, the channel quality from sub-array #1 to the terminal is poor (for example, the measurement result corresponding to CSI-RS#1 is poor).
  • the terminal can select the sub-array ⁇ #2, #3, #4 ⁇ with better channel quality, and further determine that the CSI-RS set associated with the target SRS to be sent includes: ⁇ CSI-RS#2, CSI-RS#3, CSI-RS#4 ⁇ .
  • association relationship between the subarray/CSI-RS group and the CSI-RS may be as shown in Table 1:
  • the terminal may select one or more CSI-RSs from the CSI-RSs associated with each CSI-RS group or subarray (for example, select one or more with the best signal quality), and form a first CSI-RS set with the target CSI-RSs selected from the CSI-RSs associated with all CSI-RS groups or subarrays, and use the first CSI-RS set as the CSI-RS set associated with the target SRS set.
  • CSI-RS #1 is selected from the CSI-RSs associated with subarray #1 or CSI-RS group #1
  • CSI-RS #2 is selected from the CSI-RSs associated with subarray #2 or CSI-RS group #2
  • CSI-RS#3 is selected
  • CSI-RS#5 is selected from the CSI-RS associated with subarray#3 or CSI-RS group#3
  • CSI-RS#8 is selected from the CSI-RS associated with subarray#4 or CSI-RS group#4
  • the SRS resource group configuration associated with the first CSI-RS set can be determined based on the first configuration information, and the SRS resource group configuration associated with the first CSI-RS set can be determined as the SRS resource group configuration associated with the target SRS.
  • precoding information of the target SRS can be determined based on the first CSI-RS set, and/or the SRS resources in the SRS resource group configuration associated with the target SRS can be used to transmit the target SRS.
  • the target sub-array may be selected by the terminal. This approach simplifies the implementation of the terminal and helps reduce the signaling overhead of the network-side device.
  • the network device may also indicate the target subarray to the terminal, or the terminal may not select a subarray, but rather determine all subarrays as target subarrays, leaving the network device to select the subarray.
  • the terminal transmits the SRS associated with the downlink reference signals associated with all subarrays.
  • the network device schedules the terminal, the network device indicates the selected SRS resource group configuration or downlink reference signal set to the terminal. This approach allows the terminal to transmit SRSs with different transmit powers using different SRS resource group configurations. Having the network device select the target subarray can reduce interference between different users during MU scheduling.
  • the first information includes at least one TRP/downlink reference signal associated uplink and downlink time slot configuration.
  • uplink and downlink time slot configuration in the embodiments of the present application can be used to configure the transmission direction of a terminal or TRP over multiple time units, or in other words, to configure the time length of a terminal or TRP in at least one transmission direction.
  • the transmission direction may include at least one of the following:
  • Uplink (UL, abbreviated as U) transmission downlink (DL, abbreviated as D) transmission, flexible (Flexible, abbreviated as F) transmission, or special (Special, abbreviated as S) transmission, duplex transmission.
  • U Uplink
  • D downlink
  • F Flexible
  • S Special (Special, abbreviated as S) transmission, duplex transmission.
  • the special transmission is a special transmission including a protection interval
  • the time unit corresponding to the special transmission may refer to a special time unit including a protection interval.
  • the special transmission may be considered as a flexible transmission.
  • the time period when a time period is configured for uplink transmission, the time period can be considered as an uplink transmission time period; when a time period is configured for downlink transmission, the time period can be considered as a downlink transmission time period; when a time period is configured for flexible transmission, the time period can be considered as a flexible transmission time period; when a time period is configured for duplex transmission, the time period can be considered as a duplex transmission time period, wherein frequency domain resources for downlink transmission (e.g., downlink subband) and frequency domain resources for uplink transmission (e.g., uplink subband) are simultaneously configured in the duplex transmission time period, and the terminal can perform uplink transmission and downlink transmission respectively on the corresponding frequency domain resources.
  • frequency domain resources for downlink transmission e.g., downlink subband
  • frequency domain resources for uplink transmission e.g., uplink subband
  • the time unit may be expressed in units of time lengths such as radio frames, subframes, time slots, and OFDM symbols.
  • the uplink and downlink time slot configuration in the embodiment of the present application may also be referred to as a TDD time slot format.
  • the uplink and downlink time slot configuration is configured by the parameter TDD-UL-DL-configcommon.
  • determining, based on the first information, a downlink reference signal set associated with the target SRS or an SRS resource group configuration associated with the target SRS includes:
  • the target TRP Determining, according to the uplink and downlink timeslot configuration of the at least one TRP, a target TRP that supports uplink transmission within a target time period of the terminal, wherein the target time period of the terminal is a time period in which the terminal supports uplink transmission;
  • the target SRS-associated downlink reference signal set includes the target TRP-associated downlink reference signal, or the target SRS-associated SRS resource group configuration is determined based on the target SRS-associated downlink reference signal set.
  • the target time period of the terminal may be the terminal's uplink transmission time period, or the flexible transmission time period, or the terminal's duplex transmission time period.
  • the network-side device may configure the terminal with a duplex transmission time period.
  • the target time period may be expressed in time units such as radio frames, subframes, time slots, or orthogonal frequency-division multiplexing (OFDM) symbols, and this application does not limit this.
  • the terminal supports connection with at least two TRPs, and the at least two TRPs may correspond to different uplink and downlink time slot configurations.
  • the terminal can determine the target TRP that supports uplink transmission within the target time period of the terminal based on the uplink and downlink time slot configurations of the at least two TRPs, and then determine the reference signal set or SRS resource group configuration associated with the target SRS based on the target TRP. For example, it is determined that the downlink reference signal set associated with the target TRP includes the downlink reference signal associated with the target TRP, or the SRS resource group configuration associated with the target SRS is determined based on the downlink reference signal set associated with the target TRP. For example, the SRS resource group configuration associated with the downlink reference signal set is determined as the SRS resource group configuration associated with the target SRS.
  • the network side device can indicate a second mapping relationship to the terminal, which second mapping relationship includes a mapping relationship between at least one TRP/downlink reference signal and uplink and downlink time slot configuration (or uplink and downlink time slot format).
  • second mapping relationship includes a mapping relationship between at least one TRP/downlink reference signal and uplink and downlink time slot configuration (or uplink and downlink time slot format).
  • the terminal can obtain the uplink and downlink time slot configuration associated with at least one TRP/downlink reference signal.
  • the terminal determines at least one set of downlink reference signal sets associated with SRS of the terminal based on the uplink and downlink time slot configuration associated with the at least one TRP/downlink reference signal, wherein each set of SRS corresponds to a target time period of the terminal. For example, the terminal may determine the TRP configured for uplink transmission or flexible transmission within the target time period as the target TRP, or determine the downlink reference signal associated with the target TRP as a set of downlink reference signal sets associated with SRS sent within the target time period, so that the precoding information of a set of SRS sent within the target time period can be calculated based on the downlink reference signal set.
  • the SRS resource group configuration associated with a set of SRS sent within the target time period may also be determined based on the downlink reference signal set, for example, the SRS resource group configuration associated with the downlink reference signal set may be determined as the SRS resource group configuration associated with a set of SRS sent within the target time period, so that the group of SRS may be sent based on the SRS resources in the SRS resource group configuration.
  • whether the first time period supports uplink transmission can be determined based on the uplink and downlink time slot configuration of the TRP to which the terminal is connected.
  • the first time period can be considered as the uplink transmission time period of the terminal, that is, the first time period is the target time period of the terminal, and the terminal can determine the target TRP that supports uplink transmission within the target time period, and then determine the downlink reference signal set or SRS resource group configuration associated with the target SRS based on the target TRP.
  • the first time period is the downlink transmission time period of the terminal, that is, the first time period is not the target time period of the terminal.
  • the terminal when the terminal has full-duplex capability (e.g., SBFD capability), the terminal can determine the downlink reference signal set or SRS resource group configuration associated with the target SRS transmitted within the frequency domain resources (e.g., subband) for uplink transmission based on the uplink and downlink time slot configuration of at least one TRP and the uplink and downlink time slot configuration of the terminal, wherein the frequency domain resources for uplink transmission can be located within the uplink transmission time period of the terminal, or within the flexible transmission time period, or within the duplex transmission time period, and further, the precoding information of the target SRS can be determined based on the downlink reference signal set, and the target SRS can be sent on the time resources and frequency domain resources configured by the network side device.
  • the frequency domain resources e.g., subband
  • a terminal is connected to two Transmission Routers (TRPs) and supports SBFD.
  • the downlink transmission time of Band Width Part (BWP) 1 of TRP1 overlaps with the uplink transmission time of Band Width Part (BWP) 2 of TRP2.
  • the terminal receives downlink signals from TRP1 on BWP1 and sends uplink signals to TRP2 on BWP2.
  • the terminal also transmits a target SRS on BWP2 based on the CSI-RS transmitted by TRP2.
  • the target TRP supporting uplink transmission includes ⁇ TRP2, TRP3 ⁇
  • the associated CSI-RS set includes ⁇ CSI-RS#2, CSI-RS#3 ⁇ .
  • the terminal can determine that a group of SRSs sent in the first uplink time period (denoted as SRS group #1) is associated with the CSI-RS set ⁇ CSI-RS#2, CSI-RS#3 ⁇ .
  • the terminal can determine that a group of SRSs sent in the first uplink time period is associated with the CSI-RS set ⁇ CSI-RS#2, CSI-RS#3 ⁇ .
  • I-RS#3 ⁇ determines the precoding information of SRS group #1, or the terminal can determine the SRS resource group configuration associated with SRS group #1 based on the CSI-RS set ⁇ CSI-RS#2, CSI-RS#3 ⁇ , for example, determines the SRS resource group configuration associated with the CSI-RS set ⁇ CSI-RS#2, CSI-RS#3 ⁇ (for example, SRS resource group configuration #1) as the SRS resource group configuration associated with SRS group #1, and uses the SRS resources in the SRS resource group configuration #1 to send SRS group #1.
  • the target TRPs supporting uplink transmission include ⁇ TRP1, TRP2, TRP3 ⁇ , and the associated CSI-RS set includes ⁇ CSI-RS#1, CSI-RS#2, CSI-RS#3 ⁇ .
  • the terminal can then determine that a group of SRSs sent in the second uplink time period (denoted as SRS group #2) is associated with the CSI-RS set ⁇ CSI-RS#1, CSI-RS#2, CSI-RS#3 ⁇ , and the terminal can determine the precoding information of SRS group #2 based on the CSI-RS set ⁇ CSI-RS#1, CSI-RS#2, CSI-RS#3 ⁇ , or the terminal can determine the SRS resource group configuration associated with SRS group #2 based on the CSI-RS set ⁇ CSI-RS#1, CSI-RS#2, CSI-RS#3 ⁇ , for example, determine the SRS resource group configuration associated with the CSI-RS set ⁇ CSI-RS#1, CSI-RS#2, CSI-RS#3 ⁇ (for example, SRS resource group configuration #2) as the SRS resource group configuration associated with SRS group #2, and use the SRS resources in the SRS resource group configuration #2 to send SRS group #2.
  • SRS resource group configuration #2 for example, SRS resource group configuration #2
  • the first information includes a radio channel attribute of at least one downlink reference signal
  • the radio channel attribute of at least one downlink reference signal may be obtained by terminal measurement.
  • determining, based on the first information, a downlink reference signal set associated with the target SRS or an SRS resource group configuration associated with the target SRS includes:
  • the at least one downlink reference signal set is determined as the downlink reference signal set associated with the target SRS, or the SRS resource group configuration associated with the at least one downlink reference signal set is determined as the SRS resource group configuration associated with the target SRS.
  • the method 400 further includes:
  • the terminal receives third configuration information from the network side device, and the third configuration information is used to configure the sending time information associated with each SRS resource group configuration in the K SRS resource group configurations, or the sending time information associated with each downlink reference signal set in the K downlink reference signal sets, or the sending time information associated with the K SRS groups.
  • the sending time information associated with each SRS resource group configuration does not overlap with each other.
  • the terminal selects a certain SRS resource group configuration, it can use the associated sending time information to send SRS.
  • the network side device can determine the SRS resource configuration associated with the SRS based on the sending time of the SRS.
  • the sending time information associated with each downlink reference signal set does not overlap with each other.
  • the terminal can use the associated sending time information to send SRS when selecting a downlink reference signal set, and the network side device can determine the downlink reference signal set associated with the SRS based on the sending time of the SRS.
  • the transmission time information associated with each SRS resource group configuration includes the initial transmission time of a group of SRS corresponding to each SRS resource group configuration, or the minimum time difference information between a group of SRS corresponding to each SRS resource group configuration and the associated downlink reference signal set.
  • the minimum time difference information between the group of SRS and the associated downlink reference signal set is used to indicate the minimum time difference between the group of SRS and the last downlink reference signal in the downlink reference signal set associated with the group of SRS, and the last downlink reference signal is the latest downlink reference signal in time in the downlink reference signal set.
  • the third configuration information may be periodically configured or semi-statically configured.
  • the method 400 further includes:
  • the terminal receives third indication information from the network device side device, where the third indication information is used to indicate a valid time or period of the third configuration information. Within the valid time or period of the third configuration information, the third configuration information remains unchanged.
  • the time resources associated with the 7 SRS resource group configurations or CSI-RS sets can be as shown in Figure 7.
  • the time resources associated with each SRS resource group configuration or CSI-RS set remain unchanged, and the time resources can be considered as semi-static or static time resources.
  • the third indication information may be sent via an RRC message.
  • the third indication information is included in the third configuration information. That is, when the network side device indicates the first configuration information, it also configures the validity period or period of the first configuration information.
  • the terminal when the valid time or period of the third configuration information expires (in this case, the third configuration information can be considered invalid), the terminal sends a fifth message to the network side device to request to update the third configuration information. In response to the first message, the network side device sends a sixth message to the terminal, and the sixth message includes the updated third configuration information.
  • the fifth message may include the uplink and downlink transmission requirements of the terminal, that is, the terminal may use the uplink and downlink transmission requirement request message to request the network side device to update the third configuration information.
  • the validity period or period of the updated third configuration information may be carried in the sixth message. That is, when the network side device configures the first configuration information for the terminal, it also configures the validity period or period of the third configuration information.
  • the third configuration information may be dynamically configured.
  • the method 400 further includes:
  • the terminal receives a third downlink signaling from the network device side device, where the third downlink signaling is used to indicate updated third configuration information;
  • the terminal updates the third configuration information according to the third downlink signaling.
  • the third downlink signaling can be DCI, MAC CE, RRC message, etc.
  • the network side device when the network side device dynamically updates the SRS resource group configuration or the time resources associated with the downlink reference signal set, the network side device may only update the SRS resource group configuration associated with the target SRS or the time resources associated with the downlink reference signal set.
  • the network side device may only update the time resources associated with the SRS resource group configuration or downlink reference signal set indicated by the target SRS group index set, which is beneficial to reducing time resource overhead.
  • the network-side device configures the time resources corresponding to the SRS group index #1 and SRS group index #2, respectively, that is, the time resources associated with the SRS resource group configuration or downlink reference signal set indicated by the SRS group index #1 and SRS group index #2.
  • SRS group index #1 is configured to correspond to a first time resource
  • SRS group index #2 is configured to correspond to a second time resource, where the first time resource and the second time resource are different.
  • the network side device when the reference signal resource set or SRS resource group configuration associated with the target SRS is selected by the terminal, the network side device cannot know the reference signal resource set or SRS resource group configuration associated with the target SRS sent by the terminal, and the terminal can indicate to the network side device the reference signal resource set or SRS resource group configuration associated with the target SRS sent by the terminal.
  • the terminal may explicitly indicate the reference signal resource set or SRS resource group configuration selected by the terminal through a bitmap, an SRS resource group configuration index, or a reference signal set index, etc.
  • the reference signal resource set or SRS resource group configuration selected by the terminal may be implicitly indicated through the transmission time of the SRS.
  • the network side device can determine the reference signal resource set or SRS resource group configuration associated with the target SRS sent by the terminal by blindly detecting the SRS.
  • the method 400 further includes:
  • the terminal triggers reception of a downlink reference signal set associated with the target SRS.
  • the network-side device triggers the transmission of the downlink reference signal set associated with the target SRS.
  • the terminal determines to trigger the sending of SRS#1 and SRS#2, where SRS#1 is associated with CSI-RS#1 and SRS#2 is associated with CSI-RS#2. Then the network side device can determine to trigger the sending of CSI-RS#1 and CSI-RS#2, and the terminal can determine to trigger the receiving of CSI-RS#1 and CSI-RS#2.
  • the target SRS is an aperiodic SRS
  • the downlink reference signal set associated with the target SRS includes an aperiodic downlink reference signal
  • the method 400 further includes:
  • the transmit power of the target SRS is determined according to the path loss information of each downlink reference signal in the downlink reference signal set associated with the target SRS.
  • the terminal may determine the transmit power of the target SRS based on the minimum path loss, maximum path loss, average path loss or joint path loss of the downlink reference signals in the downlink reference signal set, wherein the joint path loss is determined based on the receiving power (denoted as the joint receiving power) calculated by the terminal for jointly receiving the downlink reference signals in the downlink reference signal set.
  • the terminal can determine equivalent channel information based on the measurement results of each downlink reference signal in the downlink reference signal set, and the terminal can determine the receiving power for jointly receiving the downlink reference signals in the downlink reference signal set based on the equivalent channel information, and the joint path loss can be determined based on the joint receiving power.
  • the target SRS transmit power may be determined according to the following formula:
  • PCMAX,f,c (i) represents the maximum transmit power configured by the terminal in carrier f, serving cell c and SRS transmission time slot i;
  • ⁇ SRS,b,f,c (q s ): represents the alpha value configured for SRS resource group configuration q s at carrier f, BWP b, serving cell c;
  • PL b,f,c (q d ) represents the path loss calculated by the terminal through the minimum path loss, maximum path loss, average path loss or joint path loss of the CSI-RS set index q d associated with the SRS resource group configuration q s at carrier f, BWP b, serving cell c.
  • h b,f,c (i,l) ⁇ SRS,b,f,c (i): represents the power adjustment value of SRS transmission time slot i and power adjustment state l at carrier f, BWP b, serving cell c.
  • PL b,f,c (q d ) PL max (q d ), where PL max (q d ) represents the path loss corresponding to the CSI-RS with the largest path loss in CSI-RS set #q d , that is, Nk is the number of CSI-RSs in the CSI- RS set #qd.
  • PL b,f,c (q d ) PL min (q d ), where PL min (q d ) represents the path loss corresponding to the CSI-RS with the smallest path loss in CSI-RS set #q d , that is, Nk is the number of CSI-RSs in the CSI- RS set #qd.
  • PL b,f,c (q d ) PL ave (q d ), where PL ave (q d ) represents the average value of the path loss of the CSI-RSs in the CSI-RS set #q d , that is, Nk is the number of CSI-RSs in the CSI- RS set #qd.
  • PL b,f,c (q d ) PL ave,precoded (q d ), where PL ave,precoded (q d ) is determined based on the joint received power of CSI-RS set #q d calculated by the terminal. For example, when all CSI-RSs in CSI-RS set #q d are jointly transmitted, the terminal may calculate the received power of all CSI-RSs in CSI-RS set #q d , i.e., the joint received power, and then determine the joint path loss based on the joint received power.
  • the terminal determines, according to a downlink reference signal set associated with the target SRS to be sent, precoding information of the target SRS, including:
  • the terminal determines precoding information of the target SRS to be sent according to the number of downlink reference signal ports in a downlink reference signal set associated with the target SRS.
  • the terminal determines the precoding information of the target SRS based on the total number of ports of all downlink reference signals in the downlink reference signal set associated with the target SRS to be sent. Calculating the precoding information of the target SRS in this manner can improve the accuracy of the calculated precoding information.
  • the terminal determines at least one first precoding information based on the number of ports of each downlink reference signal in the downlink reference signal set associated with the target SRS to be sent, and determines the precoding information of the target SRS based on the at least one first precoding information. That is, the terminal determines the corresponding precoding information based on the number of ports of a single downlink reference signal, and then determines the precoding information of the target SRS based on the precoding information corresponding to all downlink reference signals in the downlink reference signal set. Calculating the precoding information of the target SRS in this way can reduce the complexity of calculating the precoding information.
  • the terminal determines second precoding information based on the number of ports of a first downlink reference signal in a downlink reference signal set associated with a target SRS to be transmitted, and determines precoding information for the target SRS based on the second precoding information, wherein the first downlink reference signal includes at least one downlink reference signal in the downlink reference signal set associated with the target SRS. Calculating the precoding information of the target SRS in this manner can reduce the complexity of calculating the precoding information.
  • the first downlink reference signal includes one or more downlink reference signals with the best signal quality in the downlink reference signal set, or one or more downlink reference signals with signal quality greater than a second threshold.
  • the second threshold may be an RSRP threshold, an RSRQ threshold, an SINR threshold, or an RSSI threshold.
  • the second threshold may be configured by a network-side device or predefined.
  • the terminal can determine the precoding information of the target SRS based on the second precoding information, in combination with the number of ports of the first downlink reference signal and the total number of ports of all downlink reference signals in the downlink reference signal set. For example, based on the proportional relationship between the number of ports of the first downlink reference signal and the total number of ports of all downlink reference signals in the downlink reference signal set, the second precoding information is expanded to precoding information corresponding to the total number of ports, thereby obtaining the precoding information of the target SRS.
  • the precoding information corresponding to the ports of other downlink reference signals other than the first downlink reference signal in the downlink reference signal set can use or copy part or all of the second precoding information.
  • an SRS can be associated with one or more downlink reference signals, and the terminal can calculate the precoding information based on the downlink reference signal associated with the SRS, and then transmit the SRS based on the precoding information.
  • This transmission method supports the calculation of a more accurate SRS precoder based on the downlink reference signals associated with the multiple TRPs when the terminal is connected to multiple TRPs.
  • the SRS is then transmitted based on this SRS precoder. This helps ensure that network-side devices perform more accurate uplink channel measurements, thereby configuring more accurate uplink transmissions and ensuring uplink transmission performance.
  • Scenarios where a terminal is connected to multiple TRPs include CJR reception scenarios using multiple subarrays of a large antenna array on the network side, as well as CJR reception scenarios using multiple TRPs in a cell-free network. Furthermore, the increased number of ports available for uplink reception on network-side devices helps improve uplink transmission rates.
  • the method for transmitting a sounding reference signal (SRS) provided in the embodiment of the present application may be performed by a communication device.
  • the embodiment of the present application takes the method for transmitting a sounding reference signal (SRS) performed by a communication device as an example to illustrate the communication device provided in the embodiment of the present application.
  • FIG8 shows a schematic block diagram of a communication device 600 according to an embodiment of the present application.
  • the communication device 600 includes:
  • the processing unit 610 is configured to obtain an association relationship between an SRS and a downlink reference signal, wherein one SRS is associated with one downlink reference signal set, and one downlink reference signal set includes at least one downlink reference signal; and determine precoding information of a target SRS to be transmitted based on the downlink reference signal set associated with the target SRS;
  • the communication unit 620 transmits the target SRS using the precoding information.
  • processing unit 610 is further configured to:
  • the first mapping relationship represents a port mapping relationship between an SRS and a downlink reference signal
  • An association relationship between the SRS and a downlink reference signal is determined according to the first mapping relationship.
  • the first mapping relationship is included in a transmission configuration indication TCI status indication.
  • processing unit 610 is further configured to:
  • the terminal receives first configuration information from a network side device, where the first configuration information is used to indicate K SRS resource group configurations, where K is a positive integer, each SRS in each SRS resource group configuration is associated with the same downlink reference signal set, and each SRS resource group configuration is used to send the SRS in the SRS resource group configuration.
  • the communication unit 620 is further configured to:
  • First indication information is received from the network device side device, where the first indication information is used to indicate a valid time or period of the first configuration information.
  • the communication unit 620 is further configured to:
  • the terminal updates the first configuration information according to the first downlink signaling.
  • the communication unit 620 is further configured to:
  • Second configuration information is received from the network side device, where the second configuration information is used to configure the communication device 600 to send a target number M of SRS groups, or a target SRS group index set, wherein the target SRS group index set includes M SRS group indexes, and each SRS group index is used to indicate an SRS resource group configuration or a downlink reference signal set associated with the SRS resource group configuration, wherein the target SRS includes M groups of SRS, where M is a positive integer.
  • the communication unit 620 is further configured to:
  • Second indication information is received from the network device side device, where the second indication information is used to indicate a valid time or period of the second configuration information.
  • the communication unit 620 is further configured to:
  • the terminal updates the second configuration information according to the second downlink signaling.
  • processing unit 610 is further configured to:
  • the first information includes at least one of the following:
  • downlink reference signal grouping information where the downlink reference signals in a group support joint transmission
  • Downlink reference signal restriction information used to indicate at least one of a mandatory downlink reference signal, an optional downlink reference signal, and an unavailable downlink reference signal
  • TRP restriction information used to indicate at least one of a mandatory TRP, an optional TRP, and an unavailable TRP
  • a radio channel attribute of at least one downlink reference signal wherein the radio channel attribute comprises at least one of Doppler spread, Doppler frequency shift, average delay, delay spread, average gain, and a spatial receiver parameter.
  • processing unit 610 is further configured to:
  • the M SRS resource group configurations indicated by the target SRS group index set are determined as the SRS resource group configurations associated with the target SRS, or the M downlink reference signal sets indicated by the target SRS group index set are determined as the downlink reference signal sets associated with the target SRS; or
  • the downlink reference signal set associated with the target SRS or the SRS resource group configuration associated with the target SRS is determined according to the first information.
  • processing unit 610 is further configured to:
  • the first information includes group information of a downlink reference signal, measuring the downlink reference signal in at least one group according to the group information of the downlink reference signal, and determining a target downlink reference signal in each group according to the measurement result of the downlink reference signal in each group;
  • the target SRS-associated downlink reference signal set includes the target downlink signal in each group, or the target SRS-associated SRS resource group configuration is determined according to the target SRS-associated downlink reference signal set.
  • processing unit 610 is further configured to:
  • the first information includes an association relationship between a subarray and a downlink reference signal, measuring at least one subarray, and determining a target subarray in the at least one subarray according to a measurement result of the at least one subarray;
  • the target SRS-associated downlink reference signal set includes the target subarray-associated downlink reference signal, or the target SRS-associated SRS resource group configuration is determined according to the target SRS-associated downlink reference signal set.
  • processing unit 610 is further configured to:
  • the first information includes uplink and downlink time slot configurations of at least one TRP, determining a target TRP that supports uplink transmission within a target time period of the terminal according to the uplink and downlink time slot configurations of the at least one TRP, wherein the target time period of the terminal is a time period in which the terminal supports uplink transmission;
  • the target SRS-associated downlink reference signal set includes the target TRP-associated downlink reference signal, or the target SRS-associated SRS resource group configuration is determined based on the target SRS-associated downlink reference signal set.
  • processing unit 610 is further configured to:
  • the first information includes a radio channel attribute of at least one downlink reference signal, determining at least one downlink reference signal set according to the radio channel attribute of the at least one downlink reference signal, wherein the downlink reference signals in each downlink reference signal set have the same radio channel attribute;
  • the at least one downlink reference signal set is determined as the downlink reference signal set associated with the target SRS, or the SRS resource group configuration associated with the at least one downlink reference signal set is determined as the SRS resource group configuration associated with the target SRS.
  • the communication unit 620 is further configured to:
  • the terminal sends the target SRS using the SRS resources in the SRS resource group configuration associated with the target SRS and the precoding information.
  • the communication unit 620 is further configured to:
  • Third configuration information is received from a network-side device, where the third configuration information is used to configure transmission time information associated with each of K SRS resource group configurations, where K is a positive integer.
  • the transmission time information associated with each SRS resource group configuration includes the initial transmission time of a group of SRS corresponding to each SRS resource group configuration, or the minimum time difference information between a group of SRS corresponding to each SRS resource group configuration and the associated downlink reference signal set.
  • the minimum time difference information between the group of SRS and the associated downlink reference signal set is used to indicate the minimum time difference between the group of SRS and the last downlink reference signal in the downlink reference signal set associated with the group of SRS, and the last downlink reference signal is the latest downlink reference signal in time in the downlink reference signal set.
  • the communication unit 620 is further configured to:
  • the communication unit 620 is further configured to:
  • the terminal updates the third configuration information according to the third downlink signaling.
  • the communication unit 620 is further configured to:
  • a downlink reference signal set associated with the target SRS is triggered for reception, wherein the target SRS is an aperiodic SRS, and the downlink reference signal set associated with the target SRS includes an aperiodic downlink reference signal.
  • processing unit 610 is further configured to:
  • the transmit power of the target SRS is determined according to the path loss of each downlink reference signal in the downlink reference signal set associated with the target SRS.
  • processing unit 610 is further configured to:
  • the transmission power of the target SRS is determined based on the minimum path loss, maximum path loss, average path loss or joint path loss of the downlink reference signals in the downlink reference signal set, wherein the joint path loss is determined based on the received power of the downlink reference signals in the downlink reference signal set calculated by the communication device 600.
  • processing unit 610 is further configured to:
  • the first downlink reference signal includes at least one downlink reference signal in the downlink reference signal set associated with the target SRS.
  • the 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 processing unit may be one or more processors.
  • the communication device 600 may correspond to the terminal in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the communication device 600 are respectively for realizing the process executed by the terminal in the method embodiment shown in Figures 4 to 7 and achieving the same technical effect. To avoid repetition, they will not be repeated here.
  • FIG9 shows a schematic block diagram of a communication device 700 according to an embodiment of the present application.
  • the device 700 includes:
  • the sending unit 710 is configured to indicate an association relationship between an SRS and a downlink reference signal to a terminal, wherein one SRS is associated with one downlink reference signal set, and one downlink reference signal set includes at least one downlink reference signal;
  • the receiving unit 720 is configured to receive a target SRS sent by the terminal, wherein precoding information of the target SRS is determined according to a downlink reference signal set associated with the target SRS.
  • the sending unit 710 is further configured to:
  • the network-side device indicates a first mapping relationship to the terminal, where the first mapping relationship represents a port mapping relationship between an SRS and a downlink reference signal, and the first mapping relationship is used to determine an association relationship between the SRS and the downlink reference signal.
  • the first mapping relationship is included in a transmission configuration indication TCI status indication.
  • the sending unit 710 is further configured to:
  • First configuration information is sent to the terminal, where the first configuration information is used to configure K SRS resource group configurations, where each SRS in each SRS resource group configuration is associated with the same downlink reference signal set, and K is a positive integer.
  • the sending unit 710 is further configured to:
  • the sending unit 710 is further configured to:
  • a first downlink signaling is sent to the terminal, where the first downlink signaling is used to indicate updated first configuration information.
  • the sending unit 710 is further configured to:
  • the second configuration information is used to configure the target number M of SRS groups sent by the terminal, or a target SRS group index set, wherein the target SRS group index set includes M SRS group indexes, and each SRS group index is used to indicate an SRS resource group configuration or a downlink reference signal set associated with the SRS resource group configuration, wherein the target SRS includes M groups of SRS, and M is a positive integer.
  • the sending unit 710 is further configured to:
  • the sending unit 710 is further configured to:
  • the sending unit 710 is further configured to:
  • Third configuration information is sent to the terminal, where the third configuration information is used to configure sending time information associated with each SRS resource group configuration in K SRS resource group configurations, where K is a positive integer.
  • the transmission time information associated with each SRS resource group configuration includes the initial transmission time of a group of SRS associated with each SRS resource group configuration, or the minimum time difference information between a group of SRS associated with each SRS resource group configuration and the associated downlink reference signal set.
  • the minimum time difference information between the group of SRS and the associated downlink reference signal set is used to indicate the minimum time difference between the group of SRS and the last downlink reference signal in the downlink reference signal set associated with the group of SRS, and the last downlink reference signal is the latest downlink reference signal in time in the downlink reference signal set.
  • the sending unit 710 is further configured to:
  • the sending unit 710 is further configured to:
  • the sending unit 710 is further configured to:
  • downlink reference signal grouping information where the downlink reference signals in a group support joint transmission
  • Downlink reference signal restriction information used to indicate at least one of a mandatory downlink reference signal, an optional downlink reference signal, and an unavailable downlink reference signal
  • the restriction information of the TRP is used to indicate at least one of a mandatory TRP, an optional TRP, and an unavailable TRP.
  • the sending unit 710 is further configured to:
  • the transmission of a downlink reference signal set associated with the target SRS is triggered, wherein the target SRS is an aperiodic SRS, and the downlink reference signal set associated with the target SRS includes an aperiodic downlink reference signal.
  • the sending unit and the receiving unit may be a communication interface or a transceiver, or an input and output interface of a communication chip or a system on chip.
  • the communication device 700 may correspond to the network side device in the method embodiment of the present application, and the above-mentioned and other operations and/or functions of each unit in the communication device 700 are respectively for realizing the process executed by the network side device in the method embodiment shown in Figures 4 to 7 and achieving the same technical effect. To avoid repetition, they will not be repeated here.
  • the apparatus 600 and the apparatus 700 in the embodiments of the present application may be electronic devices, such as electronic devices with an operating system, or components in electronic devices, such as integrated circuits or chips.
  • the electronic device may be a terminal, or may be other devices other than a terminal.
  • the terminal may include but is not limited to the types of terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.
  • NAS network attached storage
  • an embodiment of the present application further provides a communication device 800, including a processor 801 and a memory 802.
  • the memory 802 stores a program or instruction that can be executed on the processor 801.
  • the program or instruction when executed by the processor 801, implements the steps performed by the terminal in the above-mentioned embodiment of the method for transmitting a sounding reference signal (SRS), and can achieve the same technical effect.
  • the communication device 800 is a network-side device
  • the program or instruction, when executed by the processor 801 implements the various steps performed by the network-side device in the above-mentioned embodiment of the method for transmitting a sounding reference signal (SRS), and can achieve the same technical effect. To avoid repetition, they are not further described here.
  • the present application also provides a terminal including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps in the method embodiments shown in Figures 4 to 7.
  • This terminal embodiment corresponds to the aforementioned terminal-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment can be applied to this terminal embodiment and achieve the same technical effects.
  • Figure 11 is a schematic diagram of the hardware structure of a terminal implementing an embodiment of the present application.
  • the terminal 900 includes but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909 and at least some of the components of the processor 910.
  • the terminal 900 may also include a power supply (such as a battery) to power various components.
  • the power supply may be logically connected to the processor 910 through a power management system, thereby implementing functions such as charging, discharging, and power consumption management through the power management system.
  • the terminal structure shown in Figure 11 does not constitute a limitation of the terminal.
  • the terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be described in detail here.
  • the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042, and the graphics processor 9041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode.
  • the display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc.
  • the user input unit 907 includes a touch panel 9071 and at least one of the other input devices 9072.
  • the touch panel 9071 is also called a touch screen.
  • the touch panel 9071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 9072 may include but are not limited to a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.
  • the RF unit 901 may transmit the data to the processor 910 for processing. Furthermore, the RF unit 901 may send uplink data to the network-side device.
  • the RF unit 901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.
  • the memory 909 can be used to store software programs or instructions and various data.
  • the memory 909 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data.
  • the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.).
  • the memory 909 may include a volatile memory or a non-volatile memory.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be random access memory (RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM (DRRAM).
  • RAM random access memory
  • SRAM static RAM
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDRSDRAM double data rate synchronous DRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchronous link DRAM
  • DRRAM direct RAM
  • the memory 909 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.
  • Processor 910 may include one or more processing units.
  • processor 910 integrates an application processor and a modem processor.
  • the application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 910.
  • the processor 910 is configured to obtain an association relationship between an SRS and a downlink reference signal, wherein one SRS is associated with one downlink reference signal set, and one downlink reference signal set includes at least one downlink reference signal; and determine precoding information of a target SRS to be sent based on the downlink reference signal set associated with the target SRS;
  • the radio frequency unit 901 is configured to send the target SRS using the precoding information.
  • the present application also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is configured to execute a program or instruction to implement the steps of the method embodiments shown in Figures 4 to 7.
  • This network-side device embodiment corresponds to the aforementioned network-side device-side method embodiment, and each implementation process and implementation method of the aforementioned method embodiment is applicable to this network-side device embodiment and can achieve the same technical effects.
  • the network-side device 1000 includes an antenna 1001, a radio frequency device 1002, a baseband device 1003, a processor 1004, and a memory 1005.
  • Antenna 1001 is connected to radio frequency device 1002.
  • radio frequency device 1002 receives information via antenna 1001 and sends the received information to baseband device 1003 for processing.
  • baseband device 1003 processes the information to be transmitted and sends it to radio frequency device 1002.
  • Radio frequency device 1002 processes the received information and then sends it through antenna 1001.
  • the method executed by the network-side device in the above embodiment may be implemented in the baseband device 1003 , which includes a baseband processor.
  • the baseband device 1003 may, for example, include at least one baseband board, on which multiple chips are arranged, as shown in Figure 12, one of which is, for example, a baseband processor, which is connected to the memory 1005 through a bus interface to call the program in the memory 1005 and execute the network device operations shown in the above method embodiment.
  • the network side device may also include a network interface 1006, which is, for example, a Common Public Radio Interface (CPRI).
  • CPRI Common Public Radio Interface
  • the network side device 1000 of the embodiment of the present application also includes: instructions or programs stored on the memory 1005 and can be run on the processor 1004.
  • the processor 1004 calls the instructions or programs in the memory 1005 to execute the steps performed by the network side device in the method embodiments shown in Figures 4 to 7, and achieves the same technical effect. To avoid repetition, they are not repeated here.
  • the processors mentioned in the embodiments of the present application may include general-purpose processors, special-purpose processors, etc., for example, a central processing unit (CPU), a microprocessor, a digital signal processor (DSP), an artificial intelligence (AI) processor, a graphics processing unit (GPU), an application-specific integrated circuit (ASIC), a network processor (NP), a field programmable gate array (FPGA) or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc.
  • CPU central processing unit
  • DSP digital signal processor
  • AI artificial intelligence
  • GPU graphics processing unit
  • ASIC application-specific integrated circuit
  • NP network processor
  • FPGA field programmable gate array
  • An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored.
  • a program or instruction is stored.
  • the various processes of the above-mentioned embodiment of the sounding reference signal SRS transmission method are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
  • the processor is the processor in the terminal or network-side device described in the above embodiments.
  • the readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk.
  • ROM computer read-only memory
  • RAM random access memory
  • magnetic disk such as a magnetic disk
  • optical disk such as a magnetic disk
  • optical disk such as a magnetic disk
  • the readable storage medium may be a non-transitory readable storage medium.
  • An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned embodiment of the sounding reference signal SRS transmission method, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
  • An embodiment of the present application further provides a computer program/program product, which is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the various processes of the above-mentioned embodiment of the sounding reference signal SRS transmission method, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • An embodiment of the present application also provides a communication system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the above-mentioned sounding reference signal SRS transmission method, and the network side device can be used to execute the above-mentioned steps of the above-mentioned sounding reference signal SRS transmission method.
  • the computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.
  • a storage medium such as ROM, RAM, magnetic disk, optical disk, etc.

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Abstract

本申请公开了一种探测参考信号SRS的传输方法、通信装置和通信设备，属于通信领域，本申请实施例的方法包括终端获取SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；所述终端根据待发送的目标SRS关联的下行参考信号集合，确定所述目标SRS的预编码信息；所述终端使用所述预编码信息发送所述目标SRS。

Description

探测参考信号SRS的传输方法、通信装置和通信设备
本申请要求于2024年02月29日提交中国专利局、申请号为202410230977.6、发明名称为“探测参考信号SRS的传输方法、通信装置和通信设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及通信领域，具体涉及一种探测参考信号SRS的传输方法、通信装置和通信设备。
背景技术
在相关技术中，一个探测参考信号(Sounding Reference Signal，SRS)可以关联一个信道状态信息参考信号(associated Channel State Information Reference Signal，associated CSI-RS)，终端可以基于SRS关联的CSI-RS计算该SRS的预编码信息，然后基于该预编码信息进行SRS的传输，网络侧设备可以基于该SRS进行上行信道测量，根据测量结果给终端配置合适的上行传输参数，保证终端的上行传输性能。
在一些场景中，终端支持连接多个发送接收点(Transmission Reception Point，TRP)，该多个TRP可以进行相干联合传输(Coherent Joint Transmission，CJT)和相干联合接收(Coherent Joint Reception，CJR)来服务终端。这种情况下，如果沿用已有的预编码信息的确定方式会导致确定的SRS的预编码信息不准确，进而影响上行传输性能。
发明内容
本申请实施例提供一种探测参考信号SRS的传输方法、通信装置和通信设备，能够提升计算的SRS的预编码信息的准确性，保证上行传输性能。
第一方面，提供了一种探测参考信号SRS的传输方法，该方法包括：
终端获取SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；
所述终端根据待发送的目标SRS关联的下行参考信号集合，确定所述目标SRS的预编码信息；
所述终端使用所述预编码信息发送所述目标SRS。
第二方面，提供了一种探测参考信号SRS的传输方法，该方法包括：
网络侧设备向终端指示SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；
所述网络侧设备接收所述终端发送的目标SRS，其中，所述目标SRS的预编码信息根据所述目标SRS关联的下行参考信号集合确定。
第三方面，提供了一种通信装置，包括：
处理单元，用于获取SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；以及根据待发送的目标SRS关联的下行参考信号集合，确定所述目标SRS的预编码信息；
通信单元，用于使用所述预编码信息发送所述目标SRS。
第四方面，提供了一种通信装置，包括：
发送单元，用于向终端指示SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；
接收单元，用于接收所述终端发送的目标SRS，其中，所述目标SRS的预编码信息根据所述目标SRS关联的下行参考信号集合确定。
第五方面，提供了一种通信设备，该终端包括处理器和存储器，所述存储器存储可在所述处理器上运行的程序或指令，所述程序或指令被所述处理器执行时实现如第一方面所述的方法的步骤，或实现如第二方面所述的方法的步骤。
第六方面，提供了一种可读存储介质，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如第一方面所述的方法的步骤，或者实现如第二方面所述的方法的步骤。
第七方面，提供了一种无线通信系统，包括：终端及网络侧设备，所述终端可用于执行如第一方面所述的方法的步骤，所述网络侧设备可用于执行如第二方面所述的方法的步骤。
第八方面，提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如第一方面所述的方法，或实现如第二方面所述的方法。
第九方面，提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现如第一方面所述的方法的步骤，或如第二方面所述的方法的步骤。
在本申请实施例中，一个SRS可以关联一个或多个下行参考信号，终端可以基于待发送的目标SRS所关联的下行参考信号计算该目标SRS的预编码信息，能够获得更准确的预编码信息，基于该预编码信息进行目标SRS的发送，有利于保证网络侧设备基于该目标SRS进行准确的上行信道测量，进而配置合适的上行传输参数，保证上行传输性能。
附图说明
图1是本申请实施例提供的一种通信系统的示意性图。
图2是一种基于非码本的PUSCH传输流程示意图。
图3示出了一种灵活双工方式的示意图。
图4是本申请实施例提供的一种探测参考信号SRS的传输方法的示意性图。
图5是适用于本申请实施例的一种场景的示意图。
图6是本申请实施例提供的一种子阵列和参考信号的映射关系的示意图。
图7是本申请实施例提供的一种SRS资源组配置或CSI-RS集合关联的时间资源示意图。
图8是本申请实施例提供的一种通信装置的示意性图。
图9是本申请实施例提供的另一种通信装置的示意性图。
图10是本申请实施例提供的一种通信设备的示意性图。
图11是本申请实施例提供的一种终端的硬件结构图。
图12是本申请实施例提供的一种网络侧设备的硬件结构图。
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清楚描述，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。基于本申请中的实施例，本领域普通技术人员所获得的所有其他实施例，都属于本申请保护的范围。
本申请的术语“第一”、“第二”等是用于区别类似的对象，而不用于描述特定的顺序或先后次序。应该理解这样使用的术语在适当情况下可以互换，以便本申请的实施例能够以除了在这里图示或描述的那些以外的顺序实施，且“第一”、“第二”所区别的对象通常为一类，并不限定对象的个数，例如第一对象可以是一个，也可以是多个。此外，本申请中的“或”表示所连接对象的至少其中之一。例如“A或B”涵盖三种方案，即，方案一：包括A且不包括B；方案二：包括B且不包括A；方案三：既包括A又包括B。字符“/”一般表示前后关联对象是一种“或”的关系。
本申请的术语“指示”既可以是一个直接的指示(或者说显式的指示)，也可以是一个间接的指示(或者说隐含的指示)。其中，直接的指示可以理解为，发送方在发送的指示中明确告知了接收方具体的信息、需要执行的操作或请求结果等内容；间接的指示可以理解为，接收方根据发送方发送的指示确定对应的信息，或者进行判断并根据判断结果确定需要执行的操作或请求结果等。
值得指出的是，本申请实施例所描述的技术不限于长期演进型(Long Term Evolution，LTE)/LTE的演进(LTE-Advanced，LTE-A)系统，还可用于其他无线通信系统，诸如码分多址(Code Division Multiple Access，CDMA)、时分多址(Time Division Multiple Access，TDMA)、频分多址(Frequency Division Multiple Access，FDMA)、正交频分多址(Orthogonal Frequency Division Multiple Access，OFDMA)、单载波频分多址(Single-carrier Frequency-Division Multiple Access，SC-FDMA)或其他系统。本申请实施例中的术语“系统”和“网络”常被可互换地使用，所描述的技术既可用于以上提及的系统和无线电技术，也可用于其他系统和无线电技术。以下描述出于示例目的描述了新空口(New Radio，NR)系统，并且在以下大部分描述中使用NR术语，但是这些技术也可应用于NR系统以外的系统，如第6代(6th Generation，6G)通信系统。
图1示出本申请实施例可应用的一种无线通信系统的框图。无线通信系统包括终端11和网络侧设备12。其中，终端11可以是手机、平板电脑(Tablet Personal Computer)、膝上型电脑(Laptop Computer)、笔记本电脑、个人数字助理(Personal Digital Assistant，PDA)、掌上电脑、上网本、超级移动个人计算机(Ultra-mobile Personal Computer，UMPC)、移动上网装置(Mobile Internet Device，MID)、增强现实(Augmented Reality，AR)、虚拟现实(Virtual Reality，VR)设备、机器人、可穿戴式设备(Wearable Device)、飞行器(flight vehicle)、车载设备(Vehicle User Equipment，VUE)、船载设备、行人终端(Pedestrian User Equipment，PUE)、智能家居(具有无线通信功能的家居设备，如冰箱、电视、洗衣机或者家具等)、游戏机、个人计算机(Personal Computer，PC)、柜员机或者自助机等终端侧设备。可穿戴式设备包括：智能手表、智能手环、智能耳机、智能眼镜、智能首饰(智能手镯、智能手链、智能戒指、智能项链、智能脚镯、智能脚链等)、智能腕带、智能服装等。其中，车载设备也可以称为车载终端、车载控制器、车载模块、车载部件、车载芯片或车载单元等。需要说明的是，在本申请实施例并不限定终端11的具体类型。
终端也可以称为用户设备(User Equipment，UE)，终端设备，、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。
网络侧设备12可以包括接入网设备或核心网设备，其中，接入网设备也可以称为无线接入网(Radio Access Network,RAN)设备、无线接入网功能或无线接入网单元。接入网设备可以包括基站、无线局域网(Wireless Local Area Network，WLAN)接入点(Access Point，AP)或无线保真(Wireless Fidelity，WiFi)节点等。其中，基站可被称为节点B(Node B，NB)、演进节点B(Evolved Node B，eNB)、下一代节点B(the next generation Node B，gNB)、新空口节点B(New Radio Node B，NR Node B)、接入点、中继站(Relay Base Station，RBS)、服务基站(Serving Base Station，SBS)、基收发机站(Base Transceiver Station，BTS)、无线电基站、无线电收发机、基本服务集(Basic Service Set，BSS)、扩展服务集(Extended Service Set，ESS)、家用B节点(home Node B，HNB)、家用演进型B节点(home evolved Node B)、发送接收点(Transmission Reception Point，TRP)或所述领域中其他某个合适的术语，只要达到相同的技术效果，所述基站不限于特定技术词汇，需要说明的是，在本申请实施例中仅以NR系统中的基站为例进行介绍，并不限定基站的具体类型。
为便于理解本申请实施例，对基于非码本的物理上行共享信道(Physical Uplink Shared Channel，PUSCH)传输流程进行说明。
PUSCH传输模式包括码本(codebook)传输模式和非码本(non-codebook)传输模式。基于非码本的上行传输(non-codebook based UL transmission)是指终端不依据已有的码本进行PUSCH传输，而是依据关联的信道状态信息参考信号(associated Channel State Information Reference Signal，associated CSI-RS)自行计算预编码信息(precoder)，进而调整PUSCH的传输。
non-codebook PUSCH传输通常在上下行信道互易的情况下使用，例如时分双工(Time Division Duplex，TDD)场景，一般流程包括终端根据下行CSI-RS测量结果，计算得到下行预编码码字，根据上下行信道的互易性，将该下行预编码码字用于上行SRS传输；基站根据收到的上行预编码的探测参考信号(precoded Sounding Reference Signal，precoded SRS)，选择一个或多个SRS资源(SRS resource)，通过SRS资源指示(SRS resource Indicator，SRI)通知给终端，SRI资源的个数就是上行传输的秩(rank)；终端根据基站的指示，使用对应的预编码码字，进行PUSCH传输。
图2示出了一种基于非码本的PUSCH传输流程。
步骤1：UE上报UE能力信息(UeCapabilityInformation)，例如包括支持的最大层数(max layer)。
步骤2：基站给UE配置SRS资源组(SRS resource set)组。
例如，通过RRC重配置消息配置SRS资源组配置。当SRS resource set的用途(usage)为non-codebook based UL transmission时，UE最多被配置四个SRS resource(根据UE能力)。在无线资源控制(Radio Resource Control，RRC)层SRS resource set组中会配置关联的CSI-RS，用来让UE根据DL信道反推UL信道的情况，进而计算出SRS precoder。
步骤3：预编码的SRS传输。
步骤4：基站根据步骤3中接收的SRS，选择合适的SRS资源，而秩即基站选择的SRS资源的个数。基站通过下行控制信息(Downlink Control Information，DCI)通知UE上行传输的具体参数，例如包括SRI，解调参考信号(Demodulation Reference Signal，DMRS)端口(port)。
步骤5：UE根据DCI传输PUSCH。
无小区大规模多输入多输出(Multiple-Input Multiple-Output，MIMO)(Cell free massive MIMO)系统破除了传统大规模MIMO系统里小区的概念，大量天线分散分布在一个广域上、而非部署在同一个宏基站处，UE同样可以分散分布在这个广域上。这些天线被称为TRP或AP，或者，也可以认为网络侧的大型天线阵列的子阵列，理论上每个UE可以与每一个TRP/子阵列通信，借助前传网络和中央处理单元(Central Processing Unit，CPU)，地理上分散的大量TRP可以共同为较少数量的UE服务，CPU利用信道统计信息来进行联合检测。有望应用于下一代室内和热点覆盖场景，如智能工厂，火车站，购物中心，体育场，地铁，医院，社区中心或大学校园等。
传统部署多TRP(multiple TRP)网络通常采用TDD的传输模式，并且假设网络中每个TRP的上下行时隙配置是相同的，网络侧可以根据整个Cell free网络内整体的上下行流量需求来确定该上下行时隙配置参数。
在全双工(Full-Duplex，FD)Cell free架构中，假设每个TRP的上下行时隙配置不同，且可以在同一个时域资源和频率资源内进行上行与下行数据传输。在这种架构下，TRP的上下行时隙配置不变，通过控制UE和不同TRP进行上行传输或下行接收，以及相应的上行传输的准共址(Quasi-co-located，QCL)关系和下行发送的TCL关系，来实现更灵活的面向UE的全双工时隙配置。
采用此方式的好处在于，终端可以通过连接不同的上下行时隙配置的TRP来满足任意比例和需求的上下行传输；网络侧因为不需要频繁调整每个TRP的上下行时隙配置，能够节省网络侧资源开销和实现复杂度，从而保留更多的网络资源进行更全面地干扰测量、联合优化与传输控制。
缺点在于，不同的TRP之间会存在交叉链路干扰(Cross-Link Interference，CLI)，即处在下行时隙的TRP会对同一时刻处在上行时隙的TRP造成TRP间的交叉链路干扰，处在上行时隙的UE会对同一时刻处在下行时隙的UE造成UE间的交叉链路干扰。但考虑到Cell free网络中CPU可以控制各个TRP实现较精准的CLI测量，并通过优化UE-TRP连接关系和网络侧波束赋形，有效降低CLI的影响。另外，对于TRP间的干扰问题，例如TRP1对TRP2的干扰，基站决定了TRP1下行信号的内容，TRP2接收TRP1下行信号并且通过其中携带的DMRS等参考信号可以估计TRP1与TRP2之间干扰信道情况，通过基带信号处理，将TRP1下行信号干扰从TRP2接收信号中消除。
在一些场景中，考虑引入一种灵活双工方式：网络侧非重叠子带全双工(non-overlapping sub-band full duplex，SBFD)，即在同一时刻，上行传输和下行传输可在不同的频域位置同时进行，为避免上下行之间的干扰，可在对应不同传输方向的频域位置(对应双工子带)之间留出一定的保护带(Guard Band)；终端侧半双工，即与TDD一致，在同一时刻，只能作上行传输或下行传输，两者不可同时进行。可以理解的是，在这种双工方式下，网络侧在同一时刻的上行传输和下行传输只能针对不同的终端，即终端依然是半双工的。
图3示出了一种灵活双工方式的示意图，网络侧在一部分下行符号内，将单个载波的频域半静态划分为三个双工子带，其中，载波两侧为下行双工子带，中央为上行双工子带，以减少对相邻载波造成的干扰。在第三个时隙内，UE1和UE2分别以半双工模式进行上行发送和下行接收。
在一些场景中，子带全双工假设同一时间段内，上行链路和下行链路使用一个载波的不同子带；全双工cell free网络假设不同TRP工作于相同的子带/频率资源上。
在相关技术中，在non-codebook PUSCH传输过程中，UE发送的precoded SRS只支持与单个CSI-RS相关联，不支持与多个CSI-RS关联，考虑到网络侧大型天线阵列的多个子阵列进行相干联合接收(Coherent Joint Reception，CJR)接收时、或者cell free网络中多个TRP进行CJR接收时，UE仅仅基于单个CSI-RS计算SRS precoder，可能导致计算的SRS precoder不够准确。在一些情况中，例如在网络侧设备的用于上行接收的端口数较少时，需要考虑SRS与多个CSI-RS关联的配置，并且需要支持多组SRS与CSI-RS集合的关联关系以及多组SRS发送配置，例如，不同slot内的UL联合接收的TRP簇可以是不同的，需要UE提前根据多种SRS与CSI-RS集合的关联关系计算不同的SRS precoder，并反馈多组precoded SRS供网络侧进行后续调度。
下面结合附图，通过一些实施例及其应用场景对本申请实施例提供的探测参考信号SRS的传输方法进行详细地说明。
图4是本申请实施例提供的一种探测参考信号SRS的传输方法的示意性图。如图4所示，该方法400包括如下至少部分内容：
S410，终端获取SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；
S420，所述终端根据待发送的目标SRS关联的下行参考信号集合，确定所述目标SRS的预编码信息；
S430，所述终端使用所述预编码信息发送所述目标SRS。
本申请实施例中的下行参考信号例如可以包括CSI-RS，同步信号块(Synchronization Signal Block，SSB)、相位跟踪参考信号(Phase Tracking Reference Signal，PTRS)或，解调参考信号(Demodulation Reference Signal，DMRS)，也可以包括其他下行参考信号，本申请对此不做限定，以下，以下行参考信号为CSI-RS为例进行说明，但本申请并不限于此。
在本申请实施例中，下行参考信号和TRP具有关联关系。当一个信息或信号和下行参考信号具有关联关系时，也可以理解为该信息或信号和该下行参考信号关联的TRP具有关联关系，类似的，当一个信息或信号和TRP具有关联关系时，也可以理解为该信息或信号和该TRP关联的下行参考信号具有关联关系。例如，若SRS关联一个下行参考信号，也可以理解为该SRS关联该下行参考信号所关联的TRP，或者，若SRS关联一个TRP，可以理解为该SRS关联该TRP所关联的参考信号。
在一些实施例中，SRS和下行参考信号的关联关系可以是周期性配置的，或者，半静态配置的，或者静态配置的。例如，网络侧设备可以配置SRS和下行参考信号的关联关系对应的有效时间或周期，在该有效时间或周期内，该SRS和下行参考信号的关联关系不变。可选的，该有效时间或周期也可以是预定义的。
应理解，本申请并不限定该有效时间或周期的单位，例如，该有效时间或周期的长度可以是至少一个时间单元的长度，可选的，该时间单元可以是无线帧、子帧、时隙、正交频分复用(Orthogonal frequency-division multiplexing，OFDM)符号等，本申请对此不做限定。
在另一些实施例中，SRS和下行参考信号的关联关系也可以是动态配置的。例如，SRS和下行参考信号的关联关系可以是网络侧设备通过下行信令动态配置的。可选的，该下行信令可以是无线资源控制(Radio Resource Control，RRC)消息、媒体接入控制控制元素(Media Access Control Control Element，MAC CE)或下行控制信息(Downlink Control Information，DCI)等。
在本申请实施例中，下行参考信号和TRP具有关联关系可以指TRP映射到该下行参考信号，或者，该TRP支持发送该下行参考信号。
在本申请实施例中，SRS与下行参考信号具有关联关系可以指：可以根据该下行参考信号确定SRS的预编码信息，例如可以利用该下行参考信号的测量结果计算SRS的预编码信息。
应理解，在本申请实施例中，SRS和下行参考信号的关联关系可以是显式配置(或者说，直接配置)的，或者，也可以是隐式配置(或者说，间接配置)的。例如，网络侧设备可以直接指示该SRS和下行参考信号的关联关系，或者，也可以指示另一种关联关系，该终端可以根据该另一种关联关系可以确定该SRS和下行参考信号的关联关系。
应理解，在一些实现方式中，终端获取SRS和下行参考信号的关联关系可以包括终端获取多个SRS与下行参考信号的关联关系，所述多个SRS中的第一部分SRS可以关联到第一下行参考信号集合，所述多个SRS中的第二部分SRS关联到第二下行参考信号集合，其中，所述第一下行参考信号集合包括一个下行参考信号，所述第二下行参考信号集合包括多个下行参考信号。
例如，如果终端获取了多个SRS与下行参考信号的关联关系，其中有的SRS只关联到一个CSI-RS，有的SRS关联到多个CSI-RS。
在一些实现方式中，所述一个下行参考信号集合中包括至少一个下行参考信号包括：
所述一个下行参考信号集合中包括多个下行参考信号；或者，
在所述终端获取了多个SRS与下行参考信号的关联关系的情况下，所述多个SRS中的第一部分SRS关联到第一下行参考信号集合，所述多个SRS中的第二部分SRS关联到第二下行参考信号集合，其中，所述第一下行参考信号集合包括一个下行参考信号，所述第二下行参考信号集合包括多个下行参考信号。
在一些实现方式中，终端获取SRS和下行参考信号的关联关系可以包括：
所述终端获取第一映射关系，所述第一映射关系表示SRS和下行参考信号的端口映射关系；
根据所述第一映射关系，确定所述SRS和下行参考信号的关联关系。
在一些实施例中，终端获取第一映射关系可以包括：
终端从网络侧设备接收第一映射关系。例如网络侧设备通过下行信令指示该第一映射关系。可选的，该下行信令可以包括但不限于以下至少一种：RRC消息、MAC CE、DCI。
在一个具体实施例中，第一映射关系可以包括在传输配置指示(Transmission Configuration Indicator，TCI)状态指示中。例如，第一映射关系可以作为TCI状态的一部分。
在另一些实施例中，第一映射关系也可以是预定义的。
在一些实施例中，所述终端根据所述第一映射关系，确定所述SRS和下行参考信号的关联关系，包括：
将SRS映射的端口对应的下行参考信号确定为该SRS关联的下行参考信号。
在另一些实现方式中，终端获取SRS和下行参考信号的关联关系可以包括：
所述终端从网络侧设备接收第一配置信息，所述第一配置信息用于指示K个SRS资源组(SRS-ResourceSet)配置，其中，每个SRS资源组配置中的SRS关联一个下行参考信号集合，K为正整数。
即，网络侧设备可以通过SRS资源组配置来配置SRS和下行参考信号的关联关系。
例如，SRS资源组配置中可以包括关联的下行参考信号指示，例如关联的CSI-RS(associated CSI-RS)指示，用于指示该SRS资源组配置中的SRS关联的下行参考信号集合，其中，该下行参考信号集合可以包括一个或多个下行参考信号。示例性的，该K个SRS资源组配置中的第k个SRS资源组配置中的关联的下行参考信号指示包括Nk个下行参考信号，例如Nk个CSI-RS。
以下，结合具体实施例，对第一配置信息的配置方式进行说明。
在一些实施例中，第一配置信息可以是周期性配置的，或者，半静态配置的。
在一些实施例中，所述方法400还包括：
所述终端从所述网络设备侧设备接收第一指示信息，所述第一指示信息用于指示所述第一配置信息的有效时间或周期。即，该K个SRS资源组配置的有效时间或周期。在该第一配置信息的有效时间或周期内，该第一配置信息不变。例如，对于周期性的上行信道测量，网络侧设备可以指示终端在有效时间或周期内使用相同的第一配置信息，在有效时间或周期后再进行第一配置信息的更新。
可选的，第一指示信息可以通过RRC消息发送。
可选的，第一指示信息包括在第一配置信息中。即，网络侧设备在指示该K个SRS资源组配置时，同时配置该K个SRS资源组配置的有效时间或周期。
在一些实施例中，在第一配置信息的有效时间或周期超时的情况下(此情况下，可以认为第一配置信息失效)，终端向网络侧设备发送第一消息，用于请求更新第一配置信息，响应于该第一消息，网络侧设备向终端发送第二消息，第二消息包括更新的第一配置信息。
可选的，第一消息可以包括终端的上下行传输需求，即，终端可以利用上下行传输需求请求消息请求网络侧设备进行第一配置信息的更新。
可选的，更新的第一配置信息的有效时间或周期可以携带在第二消息内。也即，网络侧设备在给终端配置第一配置信息时，同时配置该第一配置信息的有效时间或周期。
在另一些实施例中，第一配置信息可以是动态配置的。
在一些实施例中，所述方法400还包括：
所述终端从所述网络设备侧设备接收第一下行信令，所述第一下行信令用于指示更新的第一配置信息；
所述终端根据所述第一下行信令更新所述第一配置信息。
可选的，第一下行信令可以是DCI或MAC CE或RRC消息等。
在一些实施例中，每个SRS资源组配置用于该SRS资源组配置中的SRS的发送。
例如，SRS资源组配置用于配置进行SRS发送的SRS资源，同一SRS资源组配置中的SRS构成一个SRS组，一个SRS组包括一个或多个SRS，一个SRS组中的SRS使用同一SRS资源组配置中所配置的SRS资源发送。
应理解，在本申请实施例中，SRS资源组配置中的SRS关联一个下行参考信号集合可以理解为该SRS资源组配置中的一组SRS均关联该下行参考信号集合，或者，也可以理解为该SRS资源组配置和该下行参考信号集合具有关联关系，即该K个SRS资源组配置和K个下行参考信号集合关联，其中，每个SRS资源组配置和一个下行参考信号集合关联。
在一些实施例中，该K个SRS资源组配置中的每个SRS资源组配置对应一个索引信息(或称SRS组索引，SRS资源组配置索引)，该索引信息可以用于指示该SRS资源组配置，或者，该SRS资源组配置关联的下行参考信号集合。
在本申请一些实施例中，所述方法400还包括：
所述终端从所述网络侧设备接收第二配置信息，所述第二配置信息用于配置所述终端发送SRS的目标组数M(记为方式一)，或者，目标SRS组索引集合(记为方式二)，其中，所述目标SRS组索引集合包括M个SRS组索引，每个SRS组索引用于指示一个SRS资源组配置和/或一个下行参考信号集合。
在一些实施例中，当第二配置信息指示目标SRS组索引集合时，可以认为网络侧设备触发了该目标SRS组索引集合关联的SRS资源组配置，或者，触发了该SRS资源组配置中的SRS的传输。
可选的，该第二配置信息还可以指示触发的SRS资源组配置中的SRS资源索引。
即，网络侧设备可以触发整个SRS资源组配置(此情况下，可以认为SRS资源组配置中的所有SRS资源都被触发)，或者，也可以触发SRS资源组配置中的部分SRS资源。
以下，结合具体实施例，对第二配置信息的配置方式进行说明。
在本申请一些实施例中，第二配置信息可以是周期性配置的，或者，半静态配置的。
在一些实施例中，所述方法400还包括：
所述终端从所述网络设备侧设备接收第二指示信息，所述第二指示信息用于指示所述第二配置信息的有效时间或周期，即，该目标组数M或目标SRS组索引集合的有效时间或周期。在该第二配置信息的有效时间或周期内，该第二配置信息不变。
可选的，第二指示信息可以通过RRC消息发送。
可选的，第二指示信息包括在第二配置信息中。即，网络侧设备在指示该第二配置信息时，同时配置该第二配置信息的有效时间或周期。
在一些实施例中，在第二配置信息的有效时间或周期超时的情况下(此情况下，可以认为第二配置信息失效)，终端向网络侧设备发送第三消息，用于请求更新第二配置信息，响应于该第二消息，网络侧设备向终端发送第四消息，第四消息包括更新的第二配置信息。
可选的，第四消息可以包括终端的上下行传输需求，即，终端可以利用上下行传输需求请求消息请求网络侧设备进行第二配置信息的更新。
可选的，更新的第二配置信息的有效时间或周期可以携带在第四消息内。也即，网络侧设备在给终端配置第二配置信息时，同时配置该第二配置信息的有效时间或周期。
在本申请一些实施例中，第二配置信息可以是动态配置的。
在一些实施例中，所述方法400还包括：
所述终端从所述网络设备侧设备接收第二下行信令，所述第二下行信令用于指示更新的第二配置信息；
所述终端根据所述第二下行信令更新所述第二配置信息。
可选的，第二下行信令可以是DCI或MAC CE或RRC消息等。
在一些实施例中，在第二配置信息用于配置终端发送的SRS的目标组数为M时，该目标SRS可以包括M组SRS，该M组SRS使用M个SRS资源组配置中的SRS资源发送，该目标SRS的预编码信息根据M个下行参考信号集合确定，其中，该M个下行参考信号集合是该M个SRS资源组配置关联的下行参考信号集合。
例如，终端可以根据预定义规则在K个SRS资源组配置中选择M个SRS资源组配置(例如选前M个，或者，选后M个等)作为目标SRS关联的SRS资源组配置，然后根据该M个SRS资源组配置关联的下行参考信号集合确定该目标SRS的预编码信息，和/或，根据该M个SRS资源组配置中的SRS资源进行目标SRS的发送。
例如，终端可以根据预定义规则在K个下行参考信号集合中选择M个下行参考信号集合作为目标SRS关联的下行参考信号集合，根据该M个下行参考信号集合确定该目标SRS的预编码信息，然后根据该预编码信息进行目标SRS的发送，还可以使用该M个下行参考信号集合关联的M个SRS资源组配置中的SRS资源进行目标SRS的发送。
示例性的，该终端可以根据K个SRS资源组配置关联的K个下行参考信号集合的接收性能，在K个下行参考信号集合中选择M个下行参考信号集合，例如对该K个下行参考信号集合中的每个下行参考信号集合进行联合测量，确定每个下行参考信号集合的联合测量结果，根据该K个下行参考信号集合的联合测量结果，确定M个下行参考信号集合。例如，该M个下行参考信号集合为联合测量结果最优的M个下行参考信号集合。
可选的，该联合测量结果可以包括但不限于以下指示一种：
参考信号接收功率(Reference Signal Receiving Power，RSRP)、参考信号接收质量(Reference Signal Receiving Quality，RSRQ)、信号干扰噪声比(Signal to Interference plus Noise Ratio，SINR)、接收的信号强度指示(Received Signal Strength Indication，RSSI)。
在另一些实施例中，在第二配置信息用于配置目标SRS组索引集合时，该目标SRS组索引集合可以包括M个SRS组索引，用于指示M个SRS资源组配置或M个下行参考信号集合，则该目标SRS可以包括M个SRS资源组配置中的M组SRS，或者，包括该M个下行参考信号集合关联的M组SRS，该目标SRS可以基于该M个SRS资源组配置中的SRS资源发送，该目标SRS的预编码信息可以根据该M个下行参考信号集合确定。
对于前述方式二，网络侧设备显式指示了目标SRS组索引集合，则终端可以将目标SRS组索引集合指示的M个SRS资源组配置确定为目标SRS所关联的SRS资源组配置，进一步可以基于该M个SRS资源组配置中的SRS资源进行目标SRS的发送，例如，根据该M个SRS资源组配置中的每个SRS资源组配置中的SRS资源进行该SRS资源组配置中的一组SRS的发送。和/或，终端可以将目标SRS组索引集合指示的M个下行参考信号集合确定为目标SRS所关联的下行参考信号集合，进一步可以基于该M个下行参考信号集合确定目标SRS的预编码信息，然后使用该预编码信息进行目标SRS的发送。
对于方式一，网络侧设备未指示该目标SRS关联的SRS资源组配置或下行参考信号集合。此情况下，终端需要确定该目标SRS所关联的SRS资源组配置，以确定用于发送目标SRS的SRS资源，和/或，确定该目标SRS关联的下行参考信号集合，以确定该目标SRS的预编码信息。
以下，结合具体实施例，对该目标SRS关联的SRS资源组配置或下行参考信号集合的确定方式进行说明。
在一些实施例中，所述终端可以根据第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置。
例如，对于未发送第二配置信息，或者，发送了第二配置信息，但仅指示了目标组数M的情况下，终端可以根据第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置。
在一些实施例中，所述第一信息包括以下至少一项：
下行参考信号的分组信息，其中，一个分组中的下行参考信号支持联合传输；
子阵列和下行参考信号的关联关系；
至少一个发送接收点TRP的上下行时隙配置(或者说，上下行时隙格式)；
下行参考信号关联的上下行时隙配置(或者说，上下行时隙格式)；
下行参考信号的限制信息；
TRP的限制信息；
至少一个下行参考信号的无线信道属性。
在一些实施例中，第一信息可以是网络侧设备指示的或者，终端测量得到的，例如下行参考信号的无线信道属性可以是终端测量得到的。
在一些实施例中，下行参考信号的限制信息包括必选的下行参考信号、可选的下行参考信号和不可用的下行参考信号中的至少一项。目标SRS关联的下行参考信号集合必须包括必选的下行参考信号，不包括不可用的下行参考信号。可选的，还可以包括可选的下行参考信号。
在一些实施例中，TRP的限制信息包括必选的TRP、可选的TRP和不可用的TRP中的至少一项。目标SRS关联的下行参考信号集合必须包括必选的TRP关联的下行参考信号，不包括不可用的TRP关联的下行参考信号。可选的，还可以包括可选的TRP关联的下行参考信号。
在一些实施例中，所述无线信道属性包括以下至少一项：
多普勒扩展、多普勒频移、平均延迟、延迟扩展、平均增益，空间接收机参数。
在一些实施例中，至少一个下行参考信号的平均增益表示该至少一个下行参考信号的信道增益的平均值。
在一些实施例中，下行参考信号的分组信息可以是网络侧设备指示的。其中，一个分组中可以包括一个或多个下行参考信号。
在一些实施例中，子阵列和下行参考信号的关联关系可以是网络侧设备指示的。其中，一个子阵列可以关联一个或多个下行参考信号，当一个子阵列关联多个下行参考信号时，该多个下行参考信号可以对应不同的波束方向。
在一些实施例中，由于下行参考信号和TRP具有关联关系，下行参考信号的分组可以认为是TRP的分组，一个分组中的TRP支持联合传输。
以下，结合第一信息中的具体信息，说明目标SRS关联的SRS资源组配置或下行参考信号集合的确定方式。
实施例1：第一信息包括下行参考信号/TRP的分组信息。
此情况下，终端可以根据下行参考信号/TRP的分组信息，选择至少一个分组中的每个分组中的一个或多个下行参考信号构成目标SRS关联的下行参考信号集合。
在一些具体实施例中，所述根据第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置，包括：
根据所述下行参考信号的分组信息，对至少一个分组中的下行参考信号进行测量，根据每个分组中的下行参考信号的测量结果确定所述每个分组中的目标下行参考信号；
所述目标SRS关联的下行参考信号集合包括所述每个分组中的目标下行信号，或者，根据所述目标SRS关联的下行参考信号集合确定目标SRS关联的SRS资源组配置。例如，将所述目标SRS关联的下行参考信号集合关联的SRS资源组配置确定为所述目标SRS关联的SRS资源组配置。
在一些实施例中，下行参考信号/TRP的分组可以根据下行参考信号/TRP关联的上下行时隙配置确定。
以图5中的场景举例说明，终端与TRP1、TRP2、TRP3连接，网络侧设备支持发送的下行参考信号集合为{CSI-RS#1,CSI-RS#2,CSI-RS#3}，该下行参考信号集合关联的TRP集合为{TRP1,TRP2,TRP3}，其中，CSI-RS#1关联TRP1，CSI-RS#2关联TRP2，CSI-RS#3关联TRP3，TRP1的上下行时隙格式为上下行时隙格式#1，即DDDSU，或者说，CSI-RS#1关联(TRP1的)上下行时隙格式#1，即DDDSU；TRP2的上下行时隙格式为上下行时隙格式#2，即DSUUU，或者说，CSI-RS#2关联(TRP2的)上下行时隙格式#2，即DSUUU；TRP3的上下行时隙格式为上下行时隙格式#3，即DDSUU，或者说，CSI-RS#3关联(TRP3的)上下行时隙格式#3，即DDSUU，终端的上下行时隙配置为上下行时隙格式#4，即DDDUU。
根据上述上下行时隙配置可以确定在第一上行时间段(slot4)内，支持进行联合传输的TRP分组包括{TRP2,TRP3}，关联到第一CSI-RS分组{CSI-RS#1,CSI-RS#3}；在第二上行时间段(slot5)内，支持进行联合传输的TRP分组包括{TRP1,TRP2,TRP3}，关联到第二CSI-RS分组{CSI-RS#1,CSI-RS#2,CSI-RS#3}。
终端在确定目标SRS关联的下行参考信号集合时，可以对该第一CSI-RS分组中的每个CSI-RS进行测量，选择该第一CSI-RS分组中的目标CSI-RS，例如信号质量最高的2个CSI-RS，对第二CSI-RS分组中的每个CSI-RS进行测量，选择该第二CSI-RS分组中的目标CSI-RS，例如信号质量最高的1个CSI-RS。将在每个CSI-RS分组中选择的目标CSI-RS组成第一CSI-RS集合，将该第一CSI-RS集合作为目标SRS集合关联的CSI-RS集合，若第一CSI-RS集合关联K个SRS资源组配置中的第一SRS资源组配置，则将第一SRS资源组配置确定为目标SRS关联的SRS资源组配置。
实施例2：第一信息包括子阵列和下行参考信号的关联关系。
此情况下，终端可以根据子阵列和下行参考信号的关联关系，在至少一个子阵列中选择目标子阵列，根据该目标子阵列关联的下行参考信号，确定目标SRS关联的下行参考信号集合。
在一些具体实施例中，所述根据第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置，包括：
对至少一个子阵列进行测量，根据所述至少一个子阵列的测量结果确定所述至少一个子阵列中的目标子阵列；
所述目标SRS关联的下行参考信号集合包括所述目标子阵列关联的下行参考信号，或者，根据所述目标SRS关联的下行参考信号集合确定所述目标SRS关联的SRS资源组配置。
在一些实施例中，网络侧设备的大型天线阵列包括多个子阵列，每个子阵列对应一个或多个下行参考信号，终端可以对该多个子阵列进行测量，根据所述多个子阵列的测量结果确定目标子阵列，其中，目标子阵列可以包括一个或多个子阵列。例如根据该多个子阵列的测量结果和第一门限，确定目标子阵列，具体例如，确定测量结果大于或等于第一门限的子阵列为目标子阵列。可选的，该第一门限可以是RSRP门限、RSRQ门限、SINR门限或RSSI门限。进一步地，可以根据该目标子阵列关联的下行参考信号确定目标SRS关联的下行参考信号集合。例如，确定该目标SRS关联的下行参考信号集合包括目标子阵列关联的下行参考信号。或，根据目标SRS关联的下行参考信号集合确定目标SRS关联的SRS资源组配置，例如，将该目标SRS关联的下行参考信号集合关联的SRS资源组配置确定为目标SRS关联的SRS资源组配置。
结合图6举例说明，如图6所示，网络侧设备的大型天线阵列包括4个子阵列{#1,#2,#3,#4}，对应{CSI-RS#1，CSI-RS#2，CSI-RS#3，CSI-RS#4}，由于障碍物遮挡，子阵列#1到终端的信道质量较差(例如，对应于CSI-RS#1的测量结果较差)，终端可以选择信道质量较好的子阵列{#2,#3,#4}，进一步可以确定待发送的目标SRS关联的CSI-RS集合包括：{CSI-RS#2，CSI-RS#3，CSI-RS#4}。
示例性的，该子阵列/CSI-RS分组和CSI-RS的关联关系可以如表1所示：
表1
在一些实施例中，终端可以在每个CSI-RS分组或子阵列关联的CSI-RS中选择一个或多个CSI-RS(例如选择信号质量最优的一个或多个)，将在所有CSI-RS分组或子阵列关联的CSI-RS中选择的目标CSI-RS组成第一CSI-RS集合，将该第一CSI-RS集合作为目标SRS集合关联的CSI-RS集合，例如，若在子阵列#1或CSI-RS分组#1关联的CSI-RS中选择了CSI-RS#1，在子阵列#2或CSI-RS分组#2关联的CSI-RS中选择了CSI-RS#3，在子阵列#3或CSI-RS分组#3关联的CSI-RS中选择了CSI-RS#5，在子阵列#4或CSI-RS分组#4关联的CSI-RS中选择了CSI-RS#8，则可以确定第一CSI-RS集合包括{CSI-RS#1，CSI-RS#3，CSI-RS#5，CSI-RS#8}，或者，还可以根据第一配置信息确定第一CSI-RS集合关联的SRS资源组配置，将该第一CSI-RS集合关联的SRS资源组配置确定为目标SRS关联的SRS资源组配置。进一步地，可以根据该第一CSI-RS集合确定目标SRS的预编码信息，和/或，使用目标SRS关联的SRS资源组配置中的SRS资源进行目标SRS的发送。
在上述实施例中，该目标子阵列可以是终端选择的，采用此方式终端实现简单，并且有利于降低网络侧设备的信令开销。
在另一些实施例中，网络侧设备也可以向终端指示目标子阵列，或者，终端不进行子阵列的选择，即确定所有子阵列为目标子阵列，由网络侧设备进行子阵列的选择。例如，终端发送所有子阵列关联的下行参考信号所关联的SRS，在网络侧设备对终端进行调度时，由网络侧设备向终端指示选择的SRS资源组配置或下行参考信号集合。采用此方式，可以为终端使用不同的SRS资源组配置发送SRS配置不同的发射功率，由网络侧设备选择目标子阵列可以减少MU调度时不同用户间的干扰。
实施例3：第一信息包括至少一个TRP/下行参考信号关联的上下行时隙配置。
需要说明的是，本申请实施例中的上下行时隙配置(或称上下行时隙格式)可以用于配置终端或TRP在多个时间单元上的传输方向，或者说，用于配置终端或TRP在至少一种传输方向上的时间长度。。
例如，该传输方向可以包括以下至少一种：
上行(UL，简称U)传输、下行(DL，简称D)传输、灵活(Flexible，简称F)传输，或特殊(Special，简称S)传输，双工传输。
其中，特殊传输为包括保护间隔的特殊传输，该特殊传输对应的时间单元可以指包括保护间隔的特殊时间单元，对于网络侧设备，特殊传输可以认为是灵活传输。
在一些实施例中，当一个时间段被配置为上行传输时，可以认为该时间段是上行传输时间段，在一个时间段被配置为下行传输时，可以认为该时间段是下行传输时间段，在一个时间段被配置为灵活传输时，可以认为该时间段是灵活传输时间段，在一个时间段被配置为双工传输时，可以认为该时间段是双工传输时间段，其中，双工传输时间段内同时配置了用于下行传输的频域资源(例如下行子带)和用于上行传输的频域资源(例如上行子带)，终端可以在对应的频域资源上分别进行上行传输和下行传输。
在一些实施例中，该时间单元可以以无线帧、子帧、时隙、OFDM符号等时间长度为单位进行表示。
本申请实施例中的上下行时隙配置也可以称为TDD时隙格式，例如，在NR系统中，该上下行时隙配置通过参数TDD-UL-DL-configcommon进行配置。
在一些具体实施例中，所述根据第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置，包括：
根据所述至少一个TRP的上下行时隙配置，确定在所述终端的目标时间段内支持进行上行传输的目标TRP，其中，所述终端的目标时间段是所述终端支持进行上行传输的时间段；
所述目标SRS关联的下行参考信号集合包括所述目标TRP关联的下行参考信号，或者，根据所述目标SRS关联的下行参考信号集合确定所述目标SRS关联的SRS资源组配置。
在一些实施例中，该终端的目标时间段可以是终端的上行传输时间段，或者，灵活传输时间段，或者，也可以是终端的双工传输时间段，例如终端具备全双工能力(例如SBFD能力)时，网络侧设备可以给终端配置双工传输时间段。可选的，该目标时间段可以以无线帧、子帧、时隙、正交频分复用(Orthogonal frequency-division multiplexing，OFDM)符号等时间单位表示，本申请对此不做限定。
在一些场景中，终端支持与至少两个TRP连接，该至少两个TRP可以对应不同的上下行时隙配置，此情况下，终端可以根据该至少两个TRP的上下行时隙配置，确定在终端的目标时间段内，支持进行上行传输的目标TRP，然后根据该目标TRP，确定目标SRS关联的参考信号集合或SRS资源组配置。例如，确定该目标TRP关联的下行参考信号集合包括目标TRP关联的下行参考信号，或者，根据该目标TRP关联的下行参考信号集合确定该目标SRS关联的SRS资源组配置。例如将该下行参考信号集合关联的SRS资源组配置确定为目标SRS关联的SRS资源组配置。
在一些实施例中，网络侧设备可以向终端指示第二映射关系，该第二映射关系包括至少一个TRP/下行参考信号和上下行时隙配置(或上下行时隙格式)的映射关系，通过该第二映射关系，终端可以获知至少一个TRP/下行参考信号关联的上下行时隙配置。
在一些实施例中，终端根据该至少一个TRP/下行参考信号关联的上下行时隙配置，确定终端的至少一组SRS关联的下行参考信号集合，其中，每组SRS对应终端的一个目标时间段，例如，终端可以将所述目标时间段内被配置为上行传输或灵活传输的TRP确定为目标TRP，或者，将该目标TRP关联的下行参考信号确定为该目标时间段内发送的一组SRS关联的下行参考信号集合，从而可以根据该下行参考信号集合计算该目标时间段内发送的一组SRS的预编码信息。或者，也可以根据下行参考信号集合确定该目标时间段内发送的一组SRS所关联的SRS资源组配置，例如，将该下行参考信号集合关联的SRS资源组配置确定为目标时间段内发送的一组SRS所关联的SRS资源组配置，从而可以根据该SRS资源组配置中的SRS资源发送该组SRS。
在一些情况中，若在第一时间段内，终端被配置为灵活传输，则该第一时间段是否支持上行传输可以根据该终端连接的TRP的上下行时隙配置确定。
例如，若终端连接的所有TRP均被配置为下行传输和灵活传输中的一种，则可以认为该第一时间段为终端的上行传输时间段，即该第一时间段是终端的目标时间段，则终端可以确定该目标时间段内支持进行上行传输的目标TRP，然后根据该目标TRP确定目标SRS关联的下行参考信号集合或SRS资源组配置。
又例如，若终端连接的TRP中存在TRP被配置为下行传输，则可以确定该第一时间段为终端的下行传输时间段，即第一时间段不是终端的目标时间段。
在一些实施例中，在终端具备全双工能力(例如SBFD能力))时，终端可以根据至少一个TRP的上下行时隙配置和该终端的上下行时隙配置，确定用于上行传输的频域资源(例如子带)内传输的目标SRS关联的下行参考信号集合或SRS资源组配置，其中，该用于上行传输的频域资源可以位于终端的上行传输时间段内，或者，灵活传输时间段内，或者，双工传输时间段内，进一步可以根据该下行参考信号集合确定目标SRS的预编码信息，在网络侧设备配置的时间资源和频域资源上发送目标SRS。
例如，假设终端连接两个TRP，并支持SBFD能力，其中TRP1的带宽部分(Band Width Part，BWP)1的下行传输时间与TRP2的BWP2的上行传输时间存在重叠。则在重叠的时间段内，终端在BWP1上接收来自TRP1的下行信号，在BWP2上向TRP2发送上行信号，终端在BWP2上基于TRP2发送的CSI-RS发送目标SRS。
结合图5所示场景举例说明，在第一上行时间段(slot4)内，支持进行上行传输的目标TRP包括{TRP2,TRP3}，关联的CSI-RS集合包括{CSI-RS#2,CSI-RS#3}，则终端可以确定第一上行时间段内发送的一组SRS(记为SRS组#1)关联到CSI-RS集合{CSI-RS#2,CSI-RS#3}，终端可以根据该CSI-RS集合{CSI-RS#2,CSI-RS#3}确定SRS组#1的预编码信息，或者，终端可以根据CSI-RS集合{CSI-RS#2,CSI-RS#3}确定SRS组#1关联的SRS资源组配置，例如将CSI-RS集合{CSI-RS#2,CSI-RS#3}关联的SRS资源组配置(例如SRS资源组配置#1)确定为SRS组#1关联的SRS资源组配置，使用该SRS资源组配置#1中的SRS资源发送SRS组#1。
在第二上行时间段(slot5)内，支持进行上行传输的目标TRP包括{TRP1,TRP2,TRP3}，关联的CSI-RS集合包括{CSI-RS#1,CSI-RS#2,CSI-RS#3}。则终端可以确定第二上行时间段内发送的一组SRS(记为SRS组#2)关联到CSI-RS集合{CSI-RS#1,CSI-RS#2,CSI-RS#3}，终端可以根据该CSI-RS集合{CSI-RS#1,CSI-RS#2,CSI-RS#3}确定SRS组#2的预编码信息，或者，终端可以根据CSI-RS集合{CSI-RS#1,CSI-RS#2,CSI-RS#3}确定SRS组#2关联的SRS资源组配置，例如将CSI-RS集合{CSI-RS#1,CSI-RS#2,CSI-RS#3}关联的SRS资源组配置(例如SRS资源组配置#2)确定为SRS组#2关联的SRS资源组配置，使用该SRS资源组配置#2中的SRS资源发送SRS组#2。
实施例4：第一信息包括至少一个下行参考信号的无线信道属性
在一些实施例中，至少一个下行参考信号的无线信道属性可以是终端测量得到的。
在一些具体实施例中，所述根据第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置，包括：
根据所述至少一个下行参考信号的无线信道属性，确定至少一个下行参考信号集合，其中，每个下行参考信号集合中的下行参考信号的无线信道属性相同或相近；
将所述至少一个下行参考信号集合确定为所述目标SRS关联的下行参考信号集合，或者，将所述至少一个下行参考信号集合关联的SRS资源组配置确定为所述目标SRS关联的SRS资源组配置。
在本申请一些实施例中，所述方法400还包括：
所述终端从所述网络侧设备接收第三配置信息，所述第三配置信息用于配置所述K个SRS资源组配置中的每个SRS资源组配置关联的发送时间信息，或者说，K个下行参考信号集合中的每个下行参考信号集合关联的发送时间信息，或者说，K个SRS组关联的发送时间信息。
可选的，每个SRS资源组配置关联的发送时间信息不互相重叠，则终端在选择某个SRS资源组配置时可以使用关联的发送时间信息进行SRS的发送，这样，网络侧设备可以根据该SRS的发送时间确定SRS关联的SRS资源配置。
可选的，每个下行参考信号集合关联的发送时间信息不互相重叠，则终端在选择某个下行参考信号集合时可以使用关联的发送时间信息进行SRS的发送，网络侧设备可以根据该SRS的发送时间确定SRS关联的下行参考信号集合。
在一些实施例中，所述每个SRS资源组配置关联的发送时间信息包括所述每个SRS资源组配置对应的一组SRS的初始发送时间，或者，所述每个SRS资源组配置对应的一组SRS与所关联的下行参考信号集合的最小时间差信息。
在一些实施例中，所述一组SRS与所关联的下行参考信号集合的最小时间差信息用于指示所述一组SRS和所述一组SRS关联的下行参考信号集合中的最后一个下行参考信号之间的最小时间差，所述最后一个下行参考信号是所述下行参考信号集合中在时间上最晚的一个下行参考信号。
以下，结合具体实施例，对第三配置信息的配置方式进行说明。
在一些实施例中，第三配置信息可以是周期性配置的，或者，半静态配置的。
在一些实施例中，所述方法400还包括：
所述终端从所述网络设备侧设备接收第三指示信息，所述第三指示信息用于指示所述第三配置信息的有效时间或周期。在该第三配置信息的有效时间或周期内，该第三配置信息不变。
例如，以K＝7为例，该7个SRS资源组配置或CSI-RS集合关联的时间资源可以如图7所示，在该第三配置信息的有效时间或周期内，每个SRS资源组配置或CSI-RS集合关联的时间资源不变，可以认为该时间资源是半静态或静态的时间资源。
可选的，第三指示信息可以通过RRC消息发送。
可选的，第三指示信息包括在第三配置信息中。即，网络侧设备在指示该第一配置信息时，同时配置该第一配置信息的有效时间或周期。
在一些实施例中，在第三配置信息的有效时间或周期超时的情况下(此情况下，可以认为第三配置信息失效)，终端向网络侧设备发送第五消息，用于请求更新第三配置信息，响应于该第一消息，网络侧设备向终端发送第六消息，第六消息包括更新的第三配置信息。
可选的，第五消息可以包括终端的上下行传输需求，即，终端可以利用上下行传输需求请求消息请求网络侧设备进行第三配置信息的更新。
可选的，更新的第三配置信息的有效时间或周期可以携带在第六消息内。也即，网络侧设备在给终端配置第一配置信息时，同时配置该第三配置信息的有效时间或周期。
在一些实施例中，第三配置信息可以是动态配置的。
在一些实施例中，所述方法400还包括：
所述终端从所述网络设备侧设备接收第三下行信令，所述第三下行信令用于指示更新的第三配置信息；
所述终端根据所述第三下行信令更新所述第三配置信息。
可选的，第三下行信令可以是DCI或MAC CE或RRC消息等。
在一些实施例中，在网络侧设备动态更新SRS资源组配置或下行参考信号集合关联的时间资源时，网络侧设备可以只更新目标SRS关联的SRS资源组配置或下行参考信号集合关联的时间资源。
例如，在第二配置信息指示目标SRS组索引集合的情况下，网络侧设备可以只更新目标SRS组索引集合指示的SRS资源组配置或下行参考信号集合关联的时间资源，有利于降低时间资源的开销。
举例说明，若第二配置信息配置了SRS组索引集合为{#1，#2}，则网络侧设备配置该SRS组索引#1和SRS组索引#2分别对应的时间资源，也即，SRS组索引#1和SRS组索引#2指示的SRS资源组配置或下行参考信号集合关联的时间资源。例如配置SRS组索引#1对应第一时间资源，SRS组索引#2对应第二时间资源，其中，第一时间资源和第二时间资源不同。
在本申请一些实施例中，在所述目标SRS关联的参考信号资源集合或SRS资源组配置是终端选择的情况下，网络侧设备不能获知终端发送的目标SRS所关联的参考信号资源集合或SRS资源组配置，终端可以向网络侧设备指示该终端发送的目标SRS所关联的参考信号资源集合或SRS资源组配置。
例如，终端可以通过比特映射(bitmap)或SRS资源组配置索引或参考信号集合索引等方式显式指示该终端选择的参考信号资源集合或SRS资源组配置。或者，也可以通过SRS的发送时间隐式指示该终端选择的参考信号资源集合或SRS资源组配置。
在另一些实施例中，在终端未向网络侧设备指示目标SRS关联的参考信号资源集合或SRS资源组配置，并且该终端使用的参考信号资源集合或SRS资源组配置不是网络侧设备配置的情况下，网络侧设备可以通过盲检测SRS确定终端发送的目标SRS关联的参考信号资源集合或SRS资源组配置。
在本申请一些实施例中，所述方法400还包括：
在所述目标SRS被触发传输的情况下，所述终端触发接收所述目标SRS关联的下行参考信号集合。
对应的，在终端触发传输目标SRS的情况下，网络侧设备触发发送目标SRS关联的下行参考信号集合。
例如，终端确定触发发送SRS#1和SRS#2，其中，SRS#1关联CSI-RS#1，SRS#2关联CSI-RS#2，则网络侧设备可以确定触发发送CSI-RS#1和CSI-RS#2，终端可以确定触发接收CSI-RS#1和CSI-RS#2。
在一些实施例中，所述目标SRS是非周期性SRS，所述目标SRS关联的下行参考信号集合包括非周期性的下行参考信号。
在本申请一些实施例中，所述方法400还包括：
根据所述目标SRS关联的下行参考信号集合中的每个下行参考信号的路径损耗信息，确定所述目标SRS的发送功率。
在一些具体实现方式中，终端可以根据所述下行参考信号集合中的下行参考信号的最小路径损耗、最大路径损耗、平均路径损耗或联合路径损耗，确定所述目标SRS的发送功率，其中，所述联合路径损耗是基于所述终端计算的对所述下行参考信号集合中的下行参考信号进行联合接收的接收功率(记为联合接收功率)确定的。
例如，终端可以根据下行参考信号集合中的每个下行参考信号的测量结果，确定等效的信道信息，终端可以根据该等效的信道信息，确定对该下行参考信号集合中的下行参考信号进行联合接收的接收功率，该联合路径损耗可以根据该联合接收功率确定。
示例性的，目标SRS的发送功率可以根据如下公式确定：
其中，PCMAX,f,c(i):表示在载波f服务小区c以及SRS的发送时隙i，终端被配置的最大发射功率；
PO_SRS,b,f,c(qs):表示在载波f，BWPb,服务小区c，SRS资源组配置qs所配置的p0值；
MSRS,b,f,c(i):表示在载波f，BWP b，服务小区c，发送时隙i配置的SRS RB数；
αSRS,b,f,c(qs):表示在载波f，BWP b，服务小区c，SRS资源组配置qs所配置的alpha值；
PLb,f,c(qd):表示在载波f，BWP b，服务小区c，对于SRS资源组配置qs，终端通过SRS资源组配置qs关联的CSI-RS集合索引qd的最小路径损耗、最大路径损耗、平均路径损耗或联合路径损耗，计算得到的路径损耗。
hb,f,c(i,l)＝δSRS,b,f,c(i):表示在载波f，BWP b，服务小区c，在SRS的发送时隙i，功率调整状态l的功率调整值。
在一些实施例中，PLb,f,c(qd)＝PLmax(qd)，其中，PLmax(qd)表示CSI-RS集#qd中路径损耗最大的CSI-RS对应的路径损耗，即，Nk为所述CSI-RS集#qd中的CSI-RS数量。
在一些实施例中，PLb,f,c(qd)＝PLmin(qd)，其中，PLmin(qd)表示CSI-RS集#qd中路径损耗最小的CSI-RS对应的路径损耗，即，Nk为所述CSI-RS集#qd中的CSI-RS数量。
在一些实施例中，PLb,f,c(qd)＝PLave(qd)，其中，PLave(qd)表示CSI-RS集#qd中的CSI-RS的路径损耗的平均值，即，Nk为所述CSI-RS集#qd中的CSI-RS数量。
在一些实施例中，PLb,f,c(qd)＝PLave,precoded(qd)，其中，PLave,precoded(qd)是根据终端计算的对CSI-RS集#qd的联合接收功率确定的。例如，在考虑CSI-RS集#qd中的所有CSI-RS进行联合传输时，终端可以计算对CSI-RS集#qd中的所有CSI-RS进行联合接收的接收功率，即该联合接收功率，然后根据该联合接收功率确定该联合路径损耗。
在一些实施例中，所述终端根据待发送的目标SRS关联的下行参考信号集合，确定所述目标SRS的预编码信息，包括：
所述终端根据待发送的目标SRS关联的下行参考信号集合中的下行参考信号的端口数，确定所述目标SRS的预编码信息。
作为一个示例，所述终端根据待发送的目标SRS关联的下行参考信号集合中的所有下行参考信号的总端口数，确定所述目标SRS的预编码信息。采用此方式计算目标SRS的预编码信息能够提升计算的预编码信息的准确度。
作为另一个示例，所述终端根据待发送的目标SRS关联的下行参考信号集合中的每个下行参考信号的端口数，确定至少一个第一预编码信息，并根据基于所述至少一个第一预编码信息，确定所述目标SRS的预编码信息。即，终端根据单个下行参考信号的端口数确定对应的预编码信息，然后根据该下行参考信号集合中的所有下行参考信号对应的预编码信息确定该目标SRS的预编码信息。采用此方式计算目标SRS的预编码信息能够降低计算预编码信息的复杂度。
作为又一个示例，所述终端根据待发送的目标SRS关联的下行参考信号集合中的第一下行参考信号的端口数，确定第二预编码信息，并根据基于所述第二预编码信息，确定所述目标SRS的预编码信息，其中，所述第一下行参考信号包括所述目标SRS关联的下行参考信号集合中至少一个下行参考信号。采用此方式计算目标SRS的预编码信息能够降低计算预编码信息的复杂度。
可选的，所述第一下行参考信号包括下行参考信号集合中的信号质量最优的一个或多个下行参考信号，或者，信号质量大于第二门限的一个或多个下行参考信号。可选的，该第二门限可以是RSRP门限、RSRQ门限、SINR门限或RSSI门限。可选的，第二门限可以是网络侧设备配置的，或者，预定义的。
在一个具体实施例中，终端可以根据第二预编码信息，结合该第一下行参考信号的端口数和该下行参考信号集合中的所有下行参考信号的总端口数，确定目标SRS的预编码信息。例如，根据第一下行参考信号的端口数和该下行参考信号集合中的所有下行参考信号的总端口数的比例关系，将所述第二预编码信息扩展为对应所述总端口数的预编码信息，从而得到该目标SRS的预编码信息。例如，下行参考信号集合中除第一下行参考信号之外的其他下行参考信号的端口对应的预编码信息可以使用或复制第二预编码信息中的部分或全部。综上，在本申请实施例中，一个SRS可以关联一个或多个下行参考信号，终端可以基于SRS关联的下行参考信号计算预编码信息，然后基于该预编码信息进行SRS的传输。采用此传输方式能够支持在终端连接多个TRP时，终端基于联合传输的多个TRP关联的下行参考信号计算更加准确的SRS precoder，然后基于该SRS precoder进行SRS传输，有利于保证网络侧设备进行更准确的上行信道测量，进而配置更准确的上行传输传输，保证上行传输性能。其中，终端连接多个TRP的场景可以包括网络侧大型天线阵列的多个子阵列的CJR接收场景，以及cell free网络中多个TRP进行CJR接收的场景。并且，网络侧设备用于上行接收的端口数增加，有利于提升上行传输速率。
上文结合图4至图7，详细描述了本申请的方法实施例，下文结合图8至图12，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。
本申请实施例提供的探测参考信号SRS的传输方法，执行主体可以为通信装置。本申请实施例中以通信装置执行探测参考信号SRS的传输方法为例，说明本申请实施例提供的通信装置。
图8示出了根据本申请实施例的通信装置600的示意性框图。如图8所示，该通信装置600包括：
处理单元610，用于获取SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；以及根据待发送的目标SRS关联的下行参考信号集合，确定所述目标SRS的预编码信息；
通信单元620使用所述预编码信息发送所述目标SRS。
在一些实施例中，所述处理单元610还用于：
获取第一映射关系，所述第一映射关系表示SRS和下行参考信号的端口映射关系；
根据所述第一映射关系，确定所述SRS和下行参考信号的关联关系。
在一些实施例中，所述第一映射关系包括在传输配置指示TCI状态指示中。
在一些实施例中，所述处理单元610还用于：
所述终端从网络侧设备接收第一配置信息，所述第一配置信息用于指示K个SRS资源组配置，其中，K为正整数，每个SRS资源组配置中的每个SRS关联同一个下行参考信号集合，所述每个SRS资源组配置用于所述SRS资源组配置中的SRS的发送。
在一些实施例中，所述通信单元620还用于：
从所述网络设备侧设备接收第一指示信息，所述第一指示信息用于指示所述第一配置信息的有效时间或周期。
在一些实施例中，所述通信单元620还用于：
从所述网络设备侧设备接收第一下行信令，所述第一下行信令用于指示更新的第一配置信息；
所述终端根据所述第一下行信令更新所述第一配置信息。
在一些实施例中，所述通信单元620还用于：
从所述网络侧设备接收第二配置信息，所述第二配置信息用于配置所述通信装置600发送SRS的目标组数M，或者，目标SRS组索引集合，其中，所述目标SRS组索引集合包括M个SRS组索引，每个SRS组索引用于指示一个SRS资源组配置或所述SRS资源组配置关联的下行参考信号集合，其中，所述目标SRS包括M组SRS，其中，M为正整数。
在一些实施例中，所述通信单元620还用于：
从所述网络设备侧设备接收第二指示信息，所述第二指示信息用于指示所述第二配置信息的有效时间或周期。
在一些实施例中，所述通信单元620还用于：
从所述网络设备侧设备接收第二下行信令，所述第二下行信令用于指示更新的第二配置信息；
所述终端根据所述第二下行信令更新所述第二配置信息。
在一些实施例中，所述处理单元610还用于：
根据所述第二配置信息和第一信息中的至少一项，确定所述目标SRS关联的SRS资源组配置或下行参考信号集合；
其中，所述第一信息包括以下至少一项：
下行参考信号的分组信息，其中，一个分组中的下行参考信号支持联合传输；
子阵列和下行参考信号的关联关系；
至少一个发送接收点TRP的上下行时隙配置；
下行参考信号关联的上下行时隙配置；
下行参考信号的限制信息，用于指示必选的下行参考信号、可选的下行参考信号和不可用的下行参考信号中的至少一项；
TRP的限制信息，用于指示必选的TRP、可选的TRP和不可用的TRP中的至少一项；
至少一个下行参考信号的无线信道属性，其中，所述无线信道属性包括多普勒扩展、多普勒频移、平均延迟、延迟扩展、平均增益，空间接收机参数中的至少一项。
在一些实施例中，所述处理单元610还用于：
若所述第二配置信息用于配置所述目标SRS组索引集合，将所述目标SRS组索引集合指示的M个SRS资源组配置确定为所述目标SRS关联的SRS资源组配置，或者，将所述目标SRS组索引集合指示的M个下行参考信号集合确定为所述目标SRS关联的下行参考信号集合；或者
若所述第二配置信息用于配置所述终端发送SRS的目标组数，根据所述第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置。
在一些实施例中，所述处理单元610还用于：
若所述第一信息包括下行参考信号的分组信息，根据所述下行参考信号的分组信息，对至少一个分组中的下行参考信号进行测量，根据每个分组中的下行参考信号的测量结果确定所述每个分组中的目标下行参考信号；
所述目标SRS关联的下行参考信号集合包括所述每个分组中的目标下行信号，或者，根据所述目标SRS关联的下行参考信号集合确定所述目标SRS关联的SRS资源组配置。
在一些实施例中，所述处理单元610还用于：
若所述第一信息包括子阵列和下行参考信号的关联关系，对至少一个子阵列进行测量，根据所述至少一个子阵列的测量结果确定所述至少一个子阵列中的目标子阵列；
所述目标SRS关联的下行参考信号集合包括所述目标子阵列关联的下行参考信号，或者，根据所述目标SRS关联的下行参考信号集合确定所述目标SRS关联的SRS资源组配置。
在一些实施例中，所述处理单元610还用于：
若所述第一信息包括至少一个TRP的上下行时隙配置，根据所述至少一个TRP的上下行时隙配置，确定在所述终端的目标时间段内支持进行上行传输的目标TRP，其中，所述终端的目标时间段是所述终端支持进行上行传输的时间段；
所述目标SRS关联的下行参考信号集合包括所述目标TRP关联的下行参考信号，或者，根据所述目标SRS关联的下行参考信号集合确定所述目标SRS关联的SRS资源组配置。
在一些实施例中，所述处理单元610还用于：
若所述第一信息包括至少一个下行参考信号的无线信道属性，根据所述至少一个下行参考信号的无线信道属性，确定至少一个下行参考信号集合，其中，每个下行参考信号集合中的下行参考信号的无线信道属性相同；
将所述至少一个下行参考信号集合确定为所述目标SRS关联的下行参考信号集合，或者，将所述至少一个下行参考信号集合关联的SRS资源组配置确定为所述目标SRS关联的SRS资源组配置。
在一些实施例中，所述通信单元620还用于：
所述终端使用所述目标SRS关联的SRS资源组配置中的SRS资源和所述预编码信息发送所述目标SRS。
在一些实施例中，所述通信单元620还用于：
从网络侧设备接收第三配置信息，所述第三配置信息用于配置K个SRS资源组配置中的每个SRS资源组配置关联的发送时间信息，其中，K为正整数。
在一些实施例中，所述每个SRS资源组配置关联的发送时间信息包括所述每个SRS资源组配置对应的一组SRS的初始发送时间，或者，所述每个SRS资源组配置对应的一组SRS与所关联的下行参考信号集合的最小时间差信息。
在一些实施例中，所述一组SRS与所关联的下行参考信号集合的最小时间差信息用于指示所述一组SRS和所述一组SRS关联的下行参考信号集合中的最后一个下行参考信号之间的最小时间差，所述最后一个下行参考信号是所述下行参考信号集合中在时间上最晚的一个下行参考信号。
在一些实施例中，所述通信单元620还用于：
从所述网络设备侧设备接收第三指示信息，所述第三指示信息用于指示所述第三配置信息的有效时间或周期。
在一些实施例中，所述通信单元620还用于：
从所述网络设备侧设备接收第三下行信令，所述第三下行信令用于指示更新的第三配置信息；
所述终端根据所述第三下行信令更新所述第三配置信息。
在一些实施例中，所述通信单元620还用于：
在所述目标SRS被触发传输的情况下，触发接收所述目标SRS关联的下行参考信号集合，其中，所述目标SRS是非周期性SRS，所述目标SRS关联的下行参考信号集合包括非周期性的下行参考信号。
在一些实施例中，所述处理单元610还用于：
根据所述目标SRS关联的下行参考信号集合中的每个下行参考信号的路径损耗，确定所述目标SRS的发送功率。
在一些实施例中，所述处理单元610还用于：
根据所述下行参考信号集合中的下行参考信号的最小路径损耗、最大路径损耗、平均路径损耗或联合路径损耗，确定所述目标SRS的发送功率，其中，所述联合路径损耗是基于所述通信装置600计算的对所述下行参考信号集合中的下行参考信号进行联合接收的接收功率确定的。
在一些实施例中，所述处理单元610还用于：
根据待发送的目标SRS关联的下行参考信号集合中的所有下行参考信号的总端口数，确定所述目标SRS的预编码信息；或者
根据待发送的目标SRS关联的下行参考信号集合中的每个下行参考信号的端口数，确定至少一个第一预编码信息，并根据基于所述至少一个第一预编码信息，确定所述目标SRS的预编码信息；或者
根据待发送的目标SRS关联的下行参考信号集合中的第一下行参考信号的端口数，确定第二预编码信息，并根据基于所述第二预编码信息，确定所述目标SRS的预编码信息，其中，所述第一下行参考信号包括所述目标SRS关联的下行参考信号集合中至少一个下行参考信号。
可选地，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通信装置600可对应于本申请方法实施例中的终端，并且通信装置600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4至图7中所示方法实施例中终端执行的流程，并达到相同的技术效果，为避免重复，这里不再赘述。
图9示出了根据本申请实施例的通信装置700的示意性框图。如图9所示，该装置700包括：
发送单元710，用于向终端指示SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；
接收单元720，用于接收所述终端发送的目标SRS，其中，所述目标SRS的预编码信息根据所述目标SRS关联的下行参考信号集合确定。
在一些实施例中，所述发送单元710还用于：
所述网络侧设备向所述终端指示第一映射关系，所述第一映射关系表示SRS和下行参考信号的端口映射关系，所述第一映射关系用于确定所述SRS和下行参考信号的关联关系。
在一些实施例中，所述第一映射关系包括在传输配置指示TCI状态指示中。
在一些实施例中，所述发送单元710还用于：
向所述终端发送第一配置信息，所述第一配置信息用于配置K个SRS资源组配置，其中，每个SRS资源组配置中的每个SRS关联同一个下行参考信号集合，K为正整数。
在一些实施例中，所述发送单元710还用于：
向所述终端发送第一指示信息，所述第一指示信息用于指示所述第一配置信息的有效时间或周期。
在一些实施例中，所述发送单元710还用于：
向所述终端发送第一下行信令，所述第一下行信令用于指示更新的第一配置信息。
在一些实施例中，所述发送单元710还用于：
向所述终端发送第二配置信息，所述第二配置信息用于配置所述终端发送SRS的目标组数M，或者，目标SRS组索引集合，其中，所述目标SRS组索引集合包括M个SRS组索引，每个SRS组索引用于指示一个SRS资源组配置或所述SRS资源组配置关联的下行参考信号集合，其中，所述目标SRS包括M组SRS，其中，M为正整数。
在一些实施例中，所述发送单元710还用于：
向所述终端发送第二指示信息，所述第二指示信息用于指示所述第二配置信息的有效时间或周期。
在一些实施例中，所述发送单元710还用于：
向所述终端发送第二下行信令，所述第二下行信令用于指示更新的第二配置信息。
在一些实施例中，所述发送单元710还用于：
向所述终端发送第三配置信息，所述第三配置信息用于配置K个SRS资源组配置中的每个SRS资源组配置关联的发送时间信息，K为正整数。
在一些实施例中，所述每个SRS资源组配置关联的发送时间信息包括所述每个SRS资源组配置所关联的一组SRS的初始发送时间，或者，所述每个SRS资源组配置所关联的一组SRS与所关联的下行参考信号集合的最小时间差信息。
在一些实施例中，所述一组SRS与所关联的下行参考信号集合的最小时间差信息用于指示所述一组SRS和所述一组SRS关联的下行参考信号集合中的最后一个下行参考信号之间的最小时间差，所述最后一个下行参考信号是所述下行参考信号集合中在时间上最晚的一个下行参考信号。
在一些实施例中，所述发送单元710还用于：
向所述终端发送第三指示信息，所述第三指示信息用于指示所述第三配置信息的有效时间或周期。
在一些实施例中，所述发送单元710还用于：
向所述终端发送第三下行信令，所述第三下行信令用于指示更新的第三配置信息。
在一些实施例中，所述发送单元710还用于：
向所述终端发送第四配置信息，所述第四配置信息用于配置以下至少一项：
下行参考信号的分组信息，其中，一个分组中的下行参考信号支持联合传输；
子阵列和下行参考信号的关联关系；
至少一个发送接收点TRP的上下行时隙配置；
下行参考信号关联的上下行时隙配置；
下行参考信号的限制信息，用于指示必选的下行参考信号、可选的下行参考信号和不可用的下行参考信号中的至少一项；
TRP的限制信息，用于指示必选的TRP、可选的TRP和不可用的TRP中的至少一项。
在一些实施例中，所述发送单元710还用于：
在所述目标SRS被触发传输的情况下，触发传输所述目标SRS关联的下行参考信号集合，其中，所述目标SRS是非周期性SRS，所述目标SRS关联的下行参考信号集合包括非周期性的下行参考信号。
可选地，在一些实施例中，上述发送单元和接收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通信装置700可对应于本申请方法实施例中的网络侧设备，并且通信装置700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4至图7中所示方法实施例中网络侧设备执行的流程，并达到相同的技术效果，为避免重复，这里不再赘述。
在一些实施例中，本申请实施例中的装置600、装置700可以是电子设备，例如具有操作系统的电子设备，也可以是电子设备中的部件，例如集成电路或芯片。该电子设备可以是终端，也可以为除终端之外的其他设备。示例性的，终端可以包括但不限于上述所列举的终端11的类型，其他设备可以为服务器、网络附属存储器(Network Attached Storage，NAS)等，本申请实施例不作具体限定。
如图10所示，本申请实施例还提供一种通信设备800，包括处理器801和存储器802，存储器802上存储有可在所述处理器801上运行的程序或指令，例如，该通信设备800为终端时，该程序或指令被处理器801执行时实现上述探测参考信号SRS的传输方法实施例中由终端执行的步骤，且能达到相同的技术效果。该通信设备800为网络侧设备时，该程序或指令被处理器801执行时实现上述探测参考信号SRS的传输方法实施例中由网络侧设备执行的各个步骤，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供一种终端，包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如图4至图7所示方法实施例中的步骤。该终端实施例与上述终端侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该终端实施例中，且能达到相同的技术效果。具体地，图11为实现本申请实施例的一种终端的硬件结构示意图。
该终端900包括但不限于：射频单元901、网络模块902、音频输出单元903、输入单元904、传感器905、显示单元906、用户输入单元907、接口单元908、存储器909以及处理器910等中的至少部分部件。
本领域技术人员可以理解，终端900还可以包括给各个部件供电的电源(比如电池)，电源可以通过电源管理系统与处理器910逻辑相连，从而通过电源管理系统实现管理充电、放电以及功耗管理等功能。图11中示出的终端结构并不构成对终端的限定，终端可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置，在此不再赘述。
应理解的是，本申请实施例中，输入单元904可以包括图形处理器(Graphics Processing Unit，GPU)9041和麦克风9042，图形处理器9041对在视频捕获模式或图像捕获模式中由图像捕获装置(如摄像头)获得的静态图片或视频的图像数据进行处理。显示单元906可包括显示面板9061，可以采用液晶显示器、有机发光二极管等形式来配置显示面板9061。用户输入单元907包括触控面板9071以及其他输入设备9072中的至少一种。触控面板9071，也称为触摸屏。触控面板9071可包括触摸检测装置和触摸控制器两个部分。其他输入设备9072可以包括但不限于物理键盘、功能键(比如音量控制按键、开关按键等)、轨迹球、鼠标、操作杆，在此不再赘述。
本申请实施例中，射频单元901接收来自网络侧设备的下行数据后，可以传输给处理器910进行处理；另外，射频单元901可以向网络侧设备发送上行数据。通常，射频单元901包括但不限于天线、放大器、收发信机、耦合器、低噪声放大器、双工器等。
存储器909可用于存储软件程序或指令以及各种数据。存储器909可主要包括存储程序或指令的第一存储区和存储数据的第二存储区，其中，第一存储区可存储操作系统、至少一个功能所需的应用程序或指令(比如声音播放功能、图像播放功能等)等。此外，存储器909可以包括易失性存储器或非易失性存储器。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)，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，DDRSDRAM)、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)和直接内存总线随机存取存储器(Direct Rambus RAM，DRRAM)。本申请实施例中的存储器909包括但不限于这些和任意其它适合类型的存储器。
处理器910可包括一个或多个处理单元；可选的，处理器910集成应用处理器和调制解调处理器，其中，应用处理器主要处理涉及操作系统、用户界面和应用程序等的操作，调制解调处理器主要处理无线通信信号，如基带处理器。可以理解的是，上述调制解调处理器也可以不集成到处理器910中。
其中，该处理器910用于获取SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；以及根据待发送的目标SRS关联的下行参考信号集合，确定所述目标SRS的预编码信息；
该射频单元901用于使用所述预编码信息发送所述目标SRS。
可以理解，本实施例中提及的各实现方式的实现过程可以参照方法实施例中终端的相关描述，并达到相同或相应的技术效果，为避免重复，在此不再赘述。
本申请实施例还提供一种网络侧设备，包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现如图4至图7所示的方法实施例的步骤。该网络侧设备实施例与上述网络侧设备侧方法实施例对应，上述方法实施例的各个实施过程和实现方式均可适用于该网络侧设备实施例中，且能达到相同的技术效果。
具体地，本申请实施例还提供了一种网络侧设备。如图12所示，该网络侧设备1000包括：天线1001、射频装置1002、基带装置1003、处理器1004和存储器1005。天线1001与射频装置1002连接。在上行方向上，射频装置1002通过天线1001接收信息，将接收的信息发送给基带装置1003进行处理。在下行方向上，基带装置1003对要发送的信息进行处理，并发送给射频装置1002，射频装置1002对收到的信息进行处理后经过天线1001发送出去。
以上实施例中网络侧设备执行的方法可以在基带装置1003中实现，该基带装置1003包括基带处理器。
基带装置1003例如可以包括至少一个基带板，该基带板上设置有多个芯片，如图12所示，其中一个芯片例如为基带处理器，通过总线接口与存储器1005连接，以调用存储器1005中的程序，执行以上方法实施例中所示的网络设备操作。
该网络侧设备还可以包括网络接口1006，该接口例如为通用公共无线接口(Common Public Radio Interface，CPRI)。
在一些实施例中，本申请实施例的网络侧设备1000还包括：存储在存储器1005上并可在处理器1004上运行的指令或程序，处理器1004调用存储器1005中的指令或程序执行实现如图4至图7所示方法实施例中网络侧设备所执行的步骤，并达到相同的技术效果，为避免重复，故不在此赘述。
本申请实施例提到的处理器可以包括通用处理器、专用处理器等，例如包括中央处理单元(Central Processing Unit，CPU)、微处理器、数字信号处理器(Digital Signal Processor，DSP)、人工智能(Artificial Intelligent，AI)处理器、图形处理器(Graphics Processing Unit，GPU)、专用集成电路(Application Specific Integrated Circuit，ASIC)、网络处理器(Network Processor，NP)、现场可编程门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、门电路、晶体管、分立硬件组件等。
本申请实施例还提供一种可读存储介质，所述可读存储介质上存储有程序或指令，该程序或指令被处理器执行时实现上述探测参考信号SRS的传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
其中，所述处理器为上述实施例中所述的终端或网络侧设备中的处理器。所述可读存储介质，包括计算机可读存储介质，如计算机只读存储器ROM、随机存取存储器RAM、磁碟或者光盘等。在一些示例中，可读存储介质可以是非瞬态的可读存储介质。
本申请实施例另提供了一种芯片，所述芯片包括处理器和通信接口，所述通信接口和所述处理器耦合，所述处理器用于运行程序或指令，实现上述探测参考信号SRS的传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
应理解，本申请实施例提到的芯片还可以称为系统级芯片，系统芯片，芯片系统或片上系统芯片等。
本申请实施例另提供了一种计算机程序/程序产品，所述计算机程序/程序产品被存储在存储介质中，所述计算机程序/程序产品被至少一个处理器执行以实现上述探测参考信号SRS的传输方法实施例的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。
本申请实施例还提供了一种通信系统，包括：终端及网络侧设备，所述终端可用于执行如上所述的探测参考信号SRS的传输方法的步骤，所述网络侧设备可用于执行如上所述的探测参考信号SRS的传输方法的步骤。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。此外，需要指出的是，本申请实施方式中的方法和装置的范围不限按示出或讨论的顺序来执行功能，还可包括根据所涉及的功能按基本同时的方式或按相反的顺序来执行功能，例如，可以按不同于所描述的次序来执行所描述的方法，并且还可以添加、省去或组合各种步骤。另外，参照某些示例所描述的特征可在其他示例中被组合。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助计算机软件产品加必需的通用硬件平台的方式来实现，当然也可以通过硬件。该计算机软件产品存储在存储介质(如ROM、RAM、磁碟、光盘等)中，包括若干指令，用以使得终端或者网络侧设备执行本申请各个实施例所述的方法。
上面结合附图对本申请的实施例进行了描述，但是本申请并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本申请的启示下，在不脱离本申请宗旨和权利要求所保护的范围情况下，还可做出很多形式的实施方式，这些实施方式均属于本申请的保护之内。

Claims (62)

  1. 一种探测参考信号SRS的传输方法，其中，包括：
    终端获取SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；
    所述终端根据待发送的目标SRS关联的下行参考信号集合，确定所述目标SRS的预编码信息；
    所述终端使用所述预编码信息发送所述目标SRS。
  2. 根据权利要求1所述的方法，其中，所述终端获取SRS和下行参考信号的关联关系，包括：
    所述终端获取第一映射关系，所述第一映射关系表示SRS和下行参考信号的端口映射关系；
    根据所述第一映射关系，确定所述SRS和下行参考信号的关联关系。
  3. 根据权利要求2所述的方法，其中，所述第一映射关系包括在传输配置指示TCI状态指示中。
  4. 根据权利要求1所述的方法，其中，所述终端获取SRS和下行参考信号的关联关系，包括：
    所述终端从网络侧设备接收第一配置信息，所述第一配置信息用于指示K个SRS资源组配置，其中，K为正整数，每个SRS资源组配置中的每个SRS关联同一个下行参考信号集合，所述每个SRS资源组配置用于所述SRS资源组配置中的SRS的发送。
  5. 根据权利要求4所述的方法，其中，所述方法还包括：
    所述终端从所述网络设备侧设备接收第一指示信息，所述第一指示信息用于指示所述第一配置信息的有效时间或周期。
  6. 根据权利要求4所述的方法，其中，所述方法还包括：
    所述终端从所述网络设备侧设备接收第一下行信令，所述第一下行信令用于指示更新的第一配置信息；
    所述终端根据所述第一下行信令更新所述第一配置信息。
  7. 根据权利要求4-6中任一项所述的方法，其中，所述方法还包括：
    所述终端从所述网络侧设备接收第二配置信息，所述第二配置信息用于配置所述终端发送SRS的目标组数M，或者，目标SRS组索引集合，其中，所述目标SRS组索引集合包括M个SRS组索引，每个SRS组索引用于指示一个SRS资源组配置或所述SRS资源组配置关联的下行参考信号集合，其中，所述目标SRS包括M组SRS，其中，M为正整数。
  8. 根据权利要求7所述的方法，其中，所述方法还包括：
    所述终端从所述网络设备侧设备接收第二指示信息，所述第二指示信息用于指示所述第二配置信息的有效时间或周期。
  9. 根据权利要求7所述的方法，其中，所述方法还包括：
    所述终端从所述网络设备侧设备接收第二下行信令，所述第二下行信令用于指示更新的第二配置信息；
    所述终端根据所述第二下行信令更新所述第二配置信息。
  10. 根据权利要求7-9中任一项所述的方法，其中，所述方法还包括：
    根据所述第二配置信息和第一信息中的至少一项，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置；
    其中，所述第一信息包括以下至少一项：
    下行参考信号的分组信息，其中，一个分组中的下行参考信号支持联合传输；
    子阵列和下行参考信号的关联关系；
    至少一个发送接收点TRP的上下行时隙配置；
    下行参考信号关联的上下行时隙配置；
    下行参考信号的限制信息，用于指示必选的下行参考信号、可选的下行参考信号和不可用的下行参考信号中的至少一项；
    TRP的限制信息，用于指示必选的TRP、可选的TRP和不可用的TRP中的至少一项；
    至少一个下行参考信号的无线信道属性，其中，所述无线信道属性包括多普勒扩展、多普勒频移、平均延迟、延迟扩展、平均增益，空间接收机参数中的至少一项。
  11. 根据权利要求7-9中任一项所述的方法，其中，所述根据所述第二配置信息和第一信息中的至少一项，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置，包括：
    若所述第二配置信息用于配置所述目标SRS组索引集合，将所述目标SRS组索引集合指示的M个SRS资源组配置确定为所述目标SRS关联的SRS资源组配置，或者，将所述目标SRS组索引集合指示的M个下行参考信号集合确定为所述目标SRS关联的下行参考信号集合；或者
    若所述第二配置信息用于配置所述终端发送SRS的目标组数，根据所述第一信息，确定所述目标SRS关联的下行参考信号集合或目标SRS关联的SRS资源组配置。
  12. 根据权利要求10或11所述的方法，其中，所述根据第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置，包括：
    若所述第一信息包括下行参考信号的分组信息，根据所述下行参考信号的分组信息，对至少一个分组中的下行参考信号进行测量，根据每个分组中的下行参考信号的测量结果确定所述每个分组中的目标下行参考信号；
    所述目标SRS关联的下行参考信号集合包括所述每个分组中的目标下行信号，或者，根据所述目标SRS关联的下行参考信号集合确定所述目标SRS关联的SRS资源组配置。
  13. 根据权利要求10或11所述的方法，其中，所述根据第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置，包括：
    若所述第一信息包括子阵列和下行参考信号的关联关系，对至少一个子阵列进行测量，根据所述至少一个子阵列的测量结果确定所述至少一个子阵列中的目标子阵列；
    所述目标SRS关联的下行参考信号集合包括所述目标子阵列关联的下行参考信号，或者，根据所述目标SRS关联的下行参考信号集合确定所述目标SRS关联的SRS资源组配置。
  14. 根据权利要求10或11所述的方法，其中，所述根据第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置，包括：
    若所述第一信息包括至少一个TRP的上下行时隙配置，根据所述至少一个TRP的上下行时隙配置，确定在所述终端的目标时间段内支持进行上行传输的目标TRP，其中，所述终端的目标时间段是所述终端支持进行上行传输的时间段；
    所述目标SRS关联的下行参考信号集合包括所述目标TRP关联的下行参考信号，或者，根据所述目标SRS关联的下行参考信号集合确定所述目标SRS关联的SRS资源组配置。
  15. 根据权利要求10或11所述的方法，其中，所述根据第一信息，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置，包括：
    若所述第一信息包括至少一个下行参考信号的无线信道属性，根据所述至少一个下行参考信号的无线信道属性，确定至少一个下行参考信号集合，其中，每个下行参考信号集合中的下行参考信号的无线信道属性相同；
    将所述至少一个下行参考信号集合确定为所述目标SRS关联的下行参考信号集合，或者，将所述至少一个下行参考信号集合关联的SRS资源组配置确定为所述目标SRS关联的SRS资源组配置。
  16. 根据权利要求10-15中任一项所述的方法，其中，所述终端使用所述预编码信息发送所述目标SRS，包括：
    所述终端使用所述目标SRS关联的SRS资源组配置中的SRS资源和所述预编码信息发送所述目标SRS。
  17. 根据权利要求1-16中任一项所述的方法，其中，所述方法还包括：
    所述终端从网络侧设备接收第三配置信息，所述第三配置信息用于配置K个SRS资源组配置中的每个SRS资源组配置关联的发送时间信息，其中，K为正整数。
  18. 根据权利要求17所述的方法，其中，所述每个SRS资源组配置关联的发送时间信息包括所述每个SRS资源组配置对应的一组SRS的初始发送时间，或者，所述每个SRS资源组配置对应的一组SRS与所关联的下行参考信号集合的最小时间差信息。
  19. 根据权利要求18所述的方法，其中，所述一组SRS与所关联的下行参考信号集合的最小时间差信息用于指示所述一组SRS和所述一组SRS关联的下行参考信号集合中的最后一个下行参考信号之间的最小时间差，所述最后一个下行参考信号是所述下行参考信号集合中在时间上最晚的一个下行参考信号。
  20. 根据权利要求17-19中任一项所述的方法，其中，所述方法还包括：
    所述终端从所述网络设备侧设备接收第三指示信息，所述第三指示信息用于指示所述第三配置信息的有效时间或周期。
  21. 根据权利要求17-19中任一项所述的方法，其中，所述方法还包括：
    所述终端从所述网络设备侧设备接收第三下行信令，所述第三下行信令用于指示更新的第三配置信息；
    所述终端根据所述第三下行信令更新所述第三配置信息。
  22. 根据权利要求1-21中任一项所述的方法，其中，所述方法还包括：
    在所述目标SRS被触发传输的情况下，所述终端触发接收所述目标SRS关联的下行参考信号集合，其中，所述目标SRS是非周期性SRS，所述目标SRS关联的下行参考信号集合包括非周期性的下行参考信号。
  23. 根据权利要求1-22中任一项所述的方法，其中，所述方法还包括：
    根据所述目标SRS关联的下行参考信号集合中的每个下行参考信号的路径损耗，确定所述目标SRS的发送功率。
  24. 根据权利要求23所述的方法，其中，所述根据所述目标SRS关联的下行参考信号集合中的每个下行参考信号的路径损耗，确定所述目标SRS的发送功率，包括：
    根据所述下行参考信号集合中的下行参考信号的最小路径损耗、最大路径损耗、平均路径损耗或联合路径损耗，确定所述目标SRS的发送功率，其中，所述联合路径损耗是基于所述终端计算的对所述下行参考信号集合中的下行参考信号进行联合接收的接收功率确定的。
  25. 根据权利要求1-24中任一项所述的方法，其中，所述终端根据待发送的目标SRS关联的下行参考信号集合，确定所述目标SRS的预编码信息，包括：
    所述终端根据待发送的目标SRS关联的下行参考信号集合中的所有下行参考信号的总端口数，确定所述目标SRS的预编码信息；或者
    所述终端根据待发送的目标SRS关联的下行参考信号集合中的每个下行参考信号的端口数，确定至少一个第一预编码信息，并根据基于所述至少一个第一预编码信息，确定所述目标SRS的预编码信息；或者
    所述终端根据待发送的目标SRS关联的下行参考信号集合中的第一下行参考信号的端口数，确定第二预编码信息，并根据基于所述第二预编码信息，确定所述目标SRS的预编码信息，其中，所述第一下行参考信号包括所述目标SRS关联的下行参考信号集合中至少一个下行参考信号。
  26. 根据权利要求4或17所述的方法，其中，所述SRS资源组配置中包括关联的下行参考信号指示。
  27. 根据权利要求4或17所述的方法，其中，所述SRS资源组配置用于指示所述SRS资源组配置中的SRS关联的下行参考信号集合。
  28. 一种探测参考信号SRS的传输方法，其中，包括：
    网络侧设备向终端指示SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；
    所述网络侧设备接收所述终端发送的目标SRS，其中，所述目标SRS的预编码信息根据所述目标SRS关联的下行参考信号集合确定。
  29. 根据权利要求28所述的方法，其中，所述网络侧设备向终端指示SRS和下行参考信号的关联关系，包括：
    所述网络侧设备向所述终端指示第一映射关系，所述第一映射关系表示SRS和下行参考信号的端口映射关系，所述第一映射关系用于确定所述SRS和下行参考信号的关联关系。
  30. 根据权利要求28所述的方法，其中，所述网络侧设备向终端指示SRS和下行参考信号的关联关系，包括：
    所述网络侧设备向所述终端发送第一配置信息，所述第一配置信息用于配置K个SRS资源组配置，其中，每个SRS资源组配置中的SRS关联一个下行参考信号集合，K为正整数。
  31. 根据权利要求30所述的方法，其中，所述方法还包括：
    所述网络侧设备向所述终端发送第一指示信息，所述第一指示信息用于指示所述第一配置信息的有效时间或周期。
  32. 根据权利要求30所述的方法，其中，所述方法还包括：
    所述网络侧设备向所述终端发送第一下行信令，所述第一下行信令用于指示更新的第一配置信息。
  33. 根据权利要求30-32中任一项所述的方法，其中，所述方法还包括：
    所述网络侧设备向所述终端发送第二配置信息，所述第二配置信息用于配置所述终端发送SRS的目标组数M，或者，目标SRS组索引集合，其中，所述目标SRS组索引集合包括M个SRS组索引，每个SRS组索引用于指示一个SRS资源组配置或所述SRS资源组配置关联的下行参考信号集合，其中，所述目标SRS包括M组SRS，其中，M为正整数。
  34. 根据权利要求33所述的方法，其中，所述方法还包括：
    所述网络侧设备向所述终端发送第二指示信息，所述第二指示信息用于指示所述第二配置信息的有效时间或周期。
  35. 根据权利要求33所述的方法，其中，所述方法还包括：
    所述网络侧设备向所述终端发送第二下行信令，所述第二下行信令用于指示更新的第二配置信息。
  36. 根据权利要求28-35中任一项所述的方法，其中，所述方法还包括：
    所述网络侧设备向所述终端发送第三配置信息，所述第三配置信息用于配置K个SRS资源组配置中的每个SRS资源组配置关联的发送时间信息，K为正整数。
  37. 根据权利要求36所述的方法，其中，所述每个SRS资源组配置关联的发送时间信息包括所述每个SRS资源组配置所关联的一组SRS的初始发送时间，或者，所述每个SRS资源组配置所关联的一组SRS与所关联的下行参考信号集合的最小时间差信息。
  38. 根据权利要求36-37中任一项所述的方法，其中，所述方法还包括：
    所述网络侧设备向所述终端发送第三指示信息，所述第三指示信息用于指示所述第三配置信息的有效时间或周期。
  39. 根据权利要求36-37中任一项所述的方法，其中，所述方法还包括：
    所述网络侧设备向所述终端发送第三下行信令，所述第三下行信令用于指示更新的第三配置信息。
  40. 根据权利要求28-39中任一项所述的方法，其中，所述方法还包括：
    所述网络侧设备向所述终端发送第四配置信息，所述第四配置信息用于配置以下至少一项：
    下行参考信号的分组信息，其中，一个分组中的下行参考信号支持联合传输；
    子阵列和下行参考信号的关联关系；
    至少一个发送接收点TRP的上下行时隙配置；
    下行参考信号关联的上下行时隙配置；
    下行参考信号的限制信息，用于指示必选的下行参考信号、可选的下行参考信号和不可用的下行参考信号中的至少一项；
    TRP的限制信息，用于指示必选的TRP、可选的TRP和不可用的TRP中的至少一项。
  41. 根据权利要求28-40中任一项所述的方法，其中，所述方法还包括：
    在所述目标SRS被触发传输的情况下，所述网络侧设备触发传输所述目标SRS关联的下行参考信号集合，其中，所述目标SRS是非周期性SRS，所述目标SRS关联的下行参考信号集合包括非周期性的下行参考信号。
  42. 根据权利要求30或36所述的方法，其中，所述SRS资源组配置中包括关联的下行参考信号指示。
  43. 根据权利要求30或36所述的方法，其中，所述SRS资源组配置用于指示所述SRS资源组配置中的SRS关联的下行参考信号集合。
  44. 一种通信装置，其中，包括：
    处理单元，用于获取SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；以及根据待发送的目标SRS关联的下行参考信号集合，确定所述目标SRS的预编码信息；
    通信单元，用于使用所述预编码信息发送所述目标SRS。
  45. 根据权利要求44所述的通信装置，其中，所述处理单元还用于：
    获取第一映射关系，所述第一映射关系表示SRS和下行参考信号的端口映射关系；
    根据所述第一映射关系，确定所述SRS和下行参考信号的关联关系。
  46. 根据权利要求44所述的通信装置，其中，所述通信单元还用于：
    从网络侧设备接收第一配置信息，所述第一配置信息用于指示K个SRS资源组配置，其中，K为正整数，每个SRS资源组配置中的每个SRS关联同一个下行参考信号集合，所述每个SRS资源组配置用于所述SRS资源组配置中的SRS的发送。
  47. 根据权利要求46所述的通信装置，其中，所述通信单元还用于：
    从所述网络侧设备接收第二配置信息，所述第二配置信息用于配置所述通信装置发送SRS的目标组数M，或者，目标SRS组索引集合，其中，所述目标SRS组索引集合包括M个SRS组索引，每个SRS组索引用于指示一个SRS资源组配置或所述SRS资源组配置关联的下行参考信号集合，其中，所述目标SRS包括M组SRS，其中，M为正整数。
  48. 根据权利要求46或47所述的通信装置，其中，所述处理单元还用于：
    根据第二配置信息和第一信息中的至少一项，确定所述目标SRS关联的下行参考信号集合或所述目标SRS关联的SRS资源组配置；
    其中，所述第一信息包括以下至少一项：
    下行参考信号的分组信息，其中，一个分组中的下行参考信号支持联合传输；
    子阵列和下行参考信号的关联关系；
    至少一个发送接收点TRP的上下行时隙配置；
    下行参考信号关联的上下行时隙配置；
    下行参考信号的限制信息，用于指示必选的下行参考信号、可选的下行参考信号和不可用的下行参考信号中的至少一项；
    TRP的限制信息，用于指示必选的TRP、可选的TRP和不可用的TRP中的至少一项；
    至少一个下行参考信号的无线信道属性，其中，所述无线信道属性包括多普勒扩展、多普勒频移、平均延迟、延迟扩展、平均增益，空间接收机参数中的至少一项。
  49. 根据权利要求48所述的通信装置，其中，所述通信单元还用于：
    使用所述目标SRS关联的SRS资源组配置中的SRS资源和所述预编码信息发送所述目标SRS。
  50. 根据权利要求46-49中任一项所述的通信装置，其中，所述通信单元还用于：
    从网络侧设备接收第三配置信息，所述第三配置信息用于配置K个SRS资源组配置中的每个SRS资源组配置关联的发送时间信息，其中，K为正整数。
  51. 根据权利要求44-50中任一项所述的通信装置，其中，所述处理单元还用于：
    根据所述目标SRS关联的下行参考信号集合中的每个下行参考信号的路径损耗，确定所述目标SRS的发送功率。
  52. 根据权利要求51所述的通信装置，其中，所述处理单元还用于：
    根据所述下行参考信号集合中的下行参考信号的最小路径损耗、最大路径损耗、平均路径损耗或联合路径损耗，确定所述目标SRS的发送功率，其中，所述联合路径损耗是基于所述通信装置计算的对所述下行参考信号集合中的下行参考信号进行联合接收的接收功率确定的。
  53. 根据权利要求44-52中任一项所述的通信装置，其中，所述处理单元还用于：
    根据待发送的目标SRS关联的下行参考信号集合中的所有下行参考信号的总端口数，确定所述目标SRS的预编码信息；或者
    根据待发送的目标SRS关联的下行参考信号集合中的每个下行参考信号的端口数，确定至少一个第一预编码信息，并根据基于所述至少一个第一预编码信息，确定所述目标SRS的预编码信息；或者
    根据待发送的目标SRS关联的下行参考信号集合中的第一下行参考信号的端口数，确定第二预编码信息，并根据基于所述第二预编码信息，确定所述目标SRS的预编码信息，其中，所述第一下行参考信号包括所述目标SRS关联的下行参考信号集合中至少一个下行参考信号。
  54. 一种通信装置，其中，包括：
    发送单元，用于向终端指示SRS和下行参考信号的关联关系，其中，一个SRS关联一个下行参考信号集合，一个下行参考信号集合中包括至少一个下行参考信号；
    接收单元，用于接收所述终端发送的目标SRS，其中，所述目标SRS的预编码信息根据所述目标SRS关联的下行参考信号集合确定。
  55. 根据权利要求54所述的通信装置，其中，所述发送单元还用于：
    向所述终端指示第一映射关系，所述第一映射关系表示SRS和下行参考信号的端口映射关系，所述第一映射关系用于确定所述SRS和下行参考信号的关联关系。
  56. 根据权利要求54所述的通信装置，其中，所述发送单元还用于：
    向所述终端发送第一配置信息，所述第一配置信息用于配置K个SRS资源组配置，其中，每个SRS资源组配置中的每个SRS关联同一个下行参考信号集合，K为正整数。
  57. 根据权利要求56所述的通信装置，其中，所述发送单元还用于：
    向所述终端发送第二配置信息，所述第二配置信息用于配置所述终端发送SRS的目标组数M，或者，目标SRS组索引集合，其中，所述目标SRS组索引集合包括M个SRS组索引，每个SRS组索引用于指示一个SRS资源组配置或所述SRS资源组配置关联的下行参考信号集合，其中，所述目标SRS包括M组SRS，其中，M为正整数。
  58. 根据权利要求56或57所述的通信装置，其中，所述发送单元还用于：
    向所述终端发送第三配置信息，所述第三配置信息用于配置K个SRS资源组配置中的每个SRS资源组配置关联的发送时间信息，K为正整数。
  59. 根据权利要求54-58中任一项所述的通信装置，其中，所述发送单元还用于：
    向所述终端发送第四配置信息，所述第四配置信息用于配置以下至少一项：
    下行参考信号的分组信息，其中，一个分组中的下行参考信号支持联合传输；
    子阵列和下行参考信号的关联关系；
    至少一个发送接收点TRP的上下行时隙配置；
    下行参考信号关联的上下行时隙配置；
    下行参考信号的限制信息，用于指示必选的下行参考信号、可选的下行参考信号和不可用的下行参考信号中的至少一项；
    TRP的限制信息，用于指示必选的TRP、可选的TRP和不可用的TRP中的至少一项。
  60. 根据权利要求54-59中任一项所述的通信装置，其中，所述发送单元还用于：
    在所述目标SRS被触发传输的情况下，触发传输所述目标SRS关联的下行参考信号集合，其中，所述目标SRS是非周期性SRS，所述目标SRS关联的下行参考信号集合包括非周期性的下行参考信号。
  61. 一种通信设备，其中，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至27中任一项所述的方法中的步骤，或如权利要求28-43中任一项所述的方法中的步骤。
  62. 一种可读存储介质，其中，所述可读存储介质上存储程序或指令，所述程序或指令被处理器执行时实现如权利要求1至27中任一项所述的方法中的步骤，或如权利要求28-43中任一项所述的方法中的步骤。
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CN113556220A (zh) * 2018-10-18 2021-10-26 华为技术有限公司 信息接收、发送方法及装置
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CN114430314A (zh) * 2017-10-10 2022-05-03 华为技术有限公司 用于控制信令的系统和方法
CN110324124A (zh) * 2018-03-29 2019-10-11 维沃移动通信有限公司 非周期探测参考信号srs的传输方法及终端设备
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