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WO2024031576A1 - Procédé et appareil de commande de puissance de signal de référence de sondage (srs) - Google Patents

Procédé et appareil de commande de puissance de signal de référence de sondage (srs) Download PDF

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Publication number
WO2024031576A1
WO2024031576A1 PCT/CN2022/111918 CN2022111918W WO2024031576A1 WO 2024031576 A1 WO2024031576 A1 WO 2024031576A1 CN 2022111918 W CN2022111918 W CN 2022111918W WO 2024031576 A1 WO2024031576 A1 WO 2024031576A1
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WIPO (PCT)
Prior art keywords
srs
power control
path loss
indication information
power
Prior art date
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PCT/CN2022/111918
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English (en)
Chinese (zh)
Inventor
罗星熠
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Beijing Xiaomi Mobile Software Co Ltd
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Beijing Xiaomi Mobile Software Co Ltd
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Priority to CN202280002643.2A priority Critical patent/CN117882447A/zh
Priority to PCT/CN2022/111918 priority patent/WO2024031576A1/fr
Publication of WO2024031576A1 publication Critical patent/WO2024031576A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present disclosure relates to the field of mobile communication technology, and in particular to a power control method and device for a sounding reference signal SRS.
  • C-RAN Centralized radio access network
  • TRP Transmission-Reception Point
  • SRS Sounding Reference Signal
  • SRS Sounding Reference Signal
  • the present disclosure provides a power control method and device for the sounding reference signal SRS, which can ensure that the SRS received by each TRP performing related joint transmission has sufficient power, thereby enhancing the performance of joint channel estimation.
  • a first aspect embodiment of the present disclosure provides a power control method for a sounding reference signal SRS.
  • the method is applied to user equipment UE.
  • the method includes:
  • Receive indication information sent by the network device where the indication information is used to indicate the power control parameters of the SRS, wherein the SRS is used for joint channel estimation of at least two transmission reception points TRP of related joint transmission, and the at least two TRP Contains at least one service TRP;
  • the transmit power of the SRS is determined according to the power control parameter.
  • the method further includes:
  • Receive configuration information of SRS resources sent by the network device where the configuration information includes an SRS identifier, and the SRS identifier is used to indicate an SRS for joint channel estimation.
  • the receive Instructions sent by network devices including:
  • Receive first indication information sent by a network device where the first indication information is at least used to indicate the target received power, path loss compensation factor and path loss estimation reference signal of the SRS;
  • a path loss estimate is determined based on the path loss estimate reference signal.
  • determining a path loss estimate based on the path loss estimate reference signal includes:
  • a path loss estimate value is determined according to the downlink reference signal of the serving TRP.
  • the path loss estimation value is determined according to the path loss estimation reference signal.
  • At least two path loss estimates corresponding to the at least two TRPs are determined based on the at least two downlink reference signals.
  • the receiving indication information sent by the network device in response to the power control parameter including a closed-loop power control parameter, which at least includes a power control adjustment value, includes:
  • the receiving indication information sent by the network device in response to the power control parameter including a closed-loop power control parameter, which at least includes a power control adjustment value, includes:
  • the maximum uplink physical shared channel adjustment value among the at least two uplink physical shared channel adjustment values is determined as the power control adjustment value.
  • determining the transmit power of the SRS according to the power control parameter includes:
  • the transmit power of the SRS is calculated based on the first calculation formula, the target received power, the path loss compensation factor, and the path loss estimate.
  • the path loss compensation factor, the path loss estimate, and the calculation of the transmit power of the SRS include:
  • determining the transmit power of the SRS according to the power control parameter includes:
  • the transmit power of the SRS is calculated based on the second calculation formula and the target received power, the path loss compensation factor, the path loss estimate value, and the power control adjustment value.
  • the method in response to the path loss estimate being at least two multiple path loss estimate values corresponding to the at least two TRPs, the method is based on the second calculation formula and the target received power,
  • the path loss compensation factor, the path loss estimate value, and the power control adjustment value are used to calculate the transmit power of the SRS, including:
  • the transmission power of the SRS is calculated using the loss compensation factor, the path loss estimate corresponding to the serving TRP, and the power control adjustment value.
  • the method further includes:
  • the SRS is sent to the at least two TRPs based on the transmit power of the SRS.
  • a second aspect embodiment of the present disclosure provides a power control method for a sounding reference signal SRS.
  • the method is applied to network equipment.
  • the method includes:
  • the method further includes:
  • the configuration information includes an SRS identifier, and the SRS identifier is used to indicate the SRS for which joint channel estimation is to be performed.
  • the The user equipment UE in response to the power control parameters including an open-loop power control parameter including at least a target received power, a path loss compensation factor and a path loss estimation reference signal, the The user equipment UE sends indication information indicating the power control parameters of the SRS, including:
  • the power control parameter including a closed loop power control parameter including at least a power control adjustment value in response to the power control parameter including a closed loop power control parameter including at least a power control adjustment value, sending the indication indicating the power control parameter of the SRS to the user equipment UE.
  • information including:
  • the second indication information being used to indicate the power control adjustment value of the SRS, wherein the power control adjustment value is determined based on the historical SRS power received by the at least two TRPs.
  • the power control parameter including a closed loop power control parameter including at least a power control adjustment value in response to the power control parameter including a closed loop power control parameter including at least a power control adjustment value, sending the indication indicating the power control parameter of the SRS to the user equipment UE.
  • information including:
  • a third embodiment of the present disclosure provides a power control device for a sounding reference signal SRS.
  • the device is applied to user equipment UE.
  • the device includes:
  • a receiving module configured to receive indication information sent by the network device, where the indication information is used to indicate the power control parameters of the SRS, wherein the SRS is used for joint channel estimation by at least two transmission reception points TRP of related joint transmission, so The at least two TRPs include at least one service TRP;
  • Determining module configured to determine the transmit power of the SRS according to the power control parameter.
  • a fourth embodiment of the present disclosure provides a power control device for a sounding reference signal SRS.
  • the device is applied to network equipment.
  • the device includes:
  • a sending module configured to send indication information indicating the power control parameter of the SRS to the user equipment UE, so that the UE determines the transmit power of the SRS according to the power control parameter, wherein the SRS is used for related joint transmission.
  • At least two transmission reception points TRP perform joint channel estimation, and the at least two TRPs include at least one serving TRP.
  • a fifth aspect embodiment of the present disclosure provides a communication device.
  • the communication device includes: a transceiver; a memory; and a processor, respectively connected to the transceiver and the memory, and configured to control the transceiver by executing computer-executable instructions on the memory.
  • wireless signal transceiver and can implement the method as in the embodiment of the first aspect or the embodiment of the second aspect of the present disclosure.
  • a sixth embodiment of the present disclosure provides a computer storage medium, wherein the computer storage medium stores computer-executable instructions; after the computer-executable instructions are executed by a processor, the computer-executable instructions can implement the first embodiment or the third aspect of the present disclosure.
  • Embodiments of the present disclosure provide a power control method and device for a sounding reference signal SRS.
  • the user equipment UE can be used to receive the instruction information sent by the network device for indicating the power control parameters of the SRS, and further determine the power control parameters for the SRS based on the power control parameters.
  • Figure 1 is a schematic flowchart of a power control method for a sounding reference signal SRS according to an embodiment of the present disclosure
  • Figure 2 is a schematic flowchart of a power control method for a sounding reference signal SRS according to an embodiment of the present disclosure
  • Figure 3 is a schematic flowchart of a power control method for a sounding reference signal SRS according to an embodiment of the present disclosure
  • Figure 4 is a schematic flowchart of a power control method for a sounding reference signal SRS according to an embodiment of the present disclosure
  • Figure 5 is a schematic flowchart of a power control method for a sounding reference signal SRS according to an embodiment of the present disclosure
  • Figure 6 is a schematic flowchart of a power control method for a sounding reference signal SRS according to an embodiment of the present disclosure
  • Figure 7 is a timing diagram of a power control method for the sounding reference signal SRS according to an embodiment of the present disclosure
  • Figure 8 is a block diagram of a power control device for a sounding reference signal SRS according to an embodiment of the present disclosure
  • Figure 9 is a block diagram of a power control device for a sounding reference signal SRS according to an embodiment of the present disclosure.
  • Figure 10 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure.
  • FIG. 11 is a schematic structural diagram of a chip provided by an embodiment of the present disclosure.
  • C-RAN Centralized radio access network
  • TRP Transmission-Reception Point
  • SRS Sounding Reference Signal
  • the present disclosure proposes a power control method and device for the sounding reference signal SRS, which can be mainly targeted at the SRS used for joint channel estimation to ensure that the SRS received by each TRP for related joint transmission has sufficient power. This further enhances the performance of joint channel estimation.
  • first, second, third, etc. may be used to describe various information in the embodiments of the present disclosure, the information should not be limited to these terms. These terms are only used to distinguish information of the same type from each other.
  • first information may also be called second information, and similarly, the second information may also be called first information.
  • word “if” as used herein may be interpreted as "when” or "when” or "in response to determining.”
  • Figure 1 shows a power control method for a sounding reference signal SRS according to an embodiment of the present disclosure. As shown in Figure 1, this method is applied to user equipment UE and may include the following steps.
  • Step 101 Receive indication information sent by the network device, where the indication information is used to indicate the power control parameters of the SRS.
  • the Sounding Reference Signal is used to cooperate with at least two Transmission-Reception Points (TRPs) of related joint transmissions for joint channel estimation, and at least two TRPs contain at least one serving TRP.
  • TRPs Transmission-Reception Points
  • the at least two TRPs may also include other TRPs, and the other TRPs may be serving TRPs or adjacent TRPs, which are not specifically limited in this disclosure.
  • the network device may be the serving TRP in the base station.
  • the user equipment UE may receive the indication information sent by the network device to indicate the power control parameters of the SRS, so as to perform power control based on The parameters are used for power control, and the transmit power of the SRS that can ensure that each TRP performing related joint transmission has joint channel estimation performance is calculated.
  • Step 102 Determine the transmit power of the SRS according to the power control parameters.
  • the power control parameters may include open-loop power control parameters.
  • the open-loop power control parameters are static and semi-static parameters, which can be instructed by the network device according to its own needs.
  • the UE can obtain them directly according to the instruction information sent by the network device; the power control parameters are also It may include closed-loop power control parameters.
  • the closed-loop power control parameters are parameters that change in real time and can be dynamically regulated by the network equipment according to the uplink transmission of the UE.
  • the transmit power of the SRS when determining the transmit power of the SRS according to the power control parameters, as a possible implementation manner, when used for joint signal estimation, closed-loop power control is not considered, and only the open-loop power control part is considered.
  • the transmit power of the SRS can be directly determined based on the open-loop power control parameters; as a possible implementation method, the transmit power of the SRS can be calculated by comprehensively utilizing the open-loop power control parameters and the closed-loop power control parameters.
  • the user equipment UE can be used to receive the indication information sent by the network device for indicating the power control parameters of the SRS, and further can determine the power control parameter for the SRS according to the power control parameters.
  • Figure 2 shows a power control method for a sounding reference signal SRS according to an embodiment of the present disclosure. This method is applied to user equipment UE. It is based on the embodiment shown in Figure 1, as shown in Figure 2, and may include the following steps.
  • Step 201 Receive configuration information of SRS resources sent by the network device, where the configuration information includes an SRS identifier, and the SRS identifier is used to indicate the SRS for joint channel estimation.
  • the SRS identifier may include at least an identifier, a newly defined SRS resource or a resource set.
  • the network device may send the configuration information of the SRS resources to the user equipment UE. After receiving the configuration information of the SRS resources, the user equipment UE may It is determined as the SRS for joint channel estimation according to the SRS identifier in the configuration information.
  • the SRS can be an existing SRS.
  • an identifier can be introduced to inform the user
  • the SRS is used for joint channel estimation; as a possible implementation, the SRS can be a newly introduced SRS specifically used for joint channel estimation.
  • a new SRS name (such as SRS-ChannelEstCJTResourceSet) can be redefined for this SRS resource/resource set.
  • Step 202 In response to the power control parameters including open-loop power control parameters, receive first indication information sent by the network device, where the first indication information is at least used to indicate the target received power of the SRS, the path loss compensation factor and the path loss estimation reference signal.
  • the user equipment UE may receive the open-loop power control parameter sent by the network device to indicate the SRS. the first instruction message.
  • the open-loop power control parameters at least include target received power, path loss compensation factor and path loss estimation reference signal.
  • Step 203 Determine the path loss estimation value according to the path loss estimation reference signal.
  • the path loss estimation reference signal may be configured as a downlink reference signal serving the TRP.
  • the embodiment step 203 may specifically include: in response to the path loss estimation reference signal being configured as the downlink reference signal of the serving TRP, determining the path loss estimation value based on the downlink reference signal of the serving TRP. Loss estimate.
  • the network equipment in order to allow the network equipment to comprehensively consider the path loss difference from each TRP to the UE when determining the target received power and path loss compensation factor, it may be considered to introduce the reporting of path loss estimates as a possible implementation method, embodiment Specifically, it may include: in response to the path loss estimation reference signal being configured as at least two downlink reference signals corresponding to at least two TRPs, reporting at least two path loss estimation values determined based on the at least two downlink reference signals to the network device, so that The network device determines the target received power and the path loss compensation factor based on at least two path loss estimates.
  • the path loss estimation reference signal can be configured with multiple downlink reference signals (Reference Signal, RS), and each RS is the reference signal of each TRP.
  • Reference Signal Reference Signal
  • multiple RSs can be configured for the path loss reference signal in the SRS resource set configuration, and an identifier is introduced to indicate the cell ID to which the reference signal belongs.
  • the UE needs to maintain N additional path losses, and N is determined by the network device based on the user's capabilities.
  • the UE performs path loss estimation based on each pathlossRS, and takes the maximum value of the downlink reference signals corresponding to multiple TRPs as the path loss estimate.
  • the embodiment step 203 may specifically include: in response to the path loss estimation reference signal being configured as at least two downlink reference signals corresponding to at least two TRPs, based on at least two TRPs.
  • the downlink reference signals determine at least two path loss estimates corresponding to at least two TRPs.
  • Step 204 Calculate the transmit power of the SRS based on the first calculation formula, the target received power, the path loss compensation factor, and the path loss estimate.
  • the formula characteristic description of the first calculation formula can be:
  • P is the transmit power of the SRS
  • P CMAX is the maximum uplink transmit power allowed by the UE
  • P 0 is the target received power
  • ⁇ is the path loss compensation factor
  • PL is the path loss estimate
  • ⁇ is other adjustment quantities.
  • the target received power and path loss compensation factor can be obtained through the RRC parameter indication of the network device, and the path loss estimate can be estimated through the path loss estimation reference signal indicated by the RRC parameter of the network device.
  • At least two path loss estimate values can be determined accordingly, and then the path loss estimate value can be determined accordingly.
  • Determine at least two transmit powers and record them as P1, P2...PN, then the final transmit power P min[Pcmax,max ⁇ P1,P2...PN ⁇ ].
  • P1, P2...PN the maximum value of the path loss of each TRP max ⁇ PL1,PL2,...PLN ⁇ ; or add the term max ⁇ PL i -PL j ⁇ to the first calculation formula, where PL i is the value of any one of at least two TRPs.
  • Estimated path loss, PL j is the estimated path loss of the service TRP.
  • the steps of the embodiment may specifically include: determining the maximum path loss estimate among at least two path loss estimates, and calculating the SRS based on the first calculation formula, the target received power, the path loss compensation factor, and the maximum path loss estimate. Transmit power; or, calculate the maximum difference between at least two TRPs with respect to the path loss estimate based on at least two path loss estimates, based on the first calculation formula after accumulating the maximum difference and the target received power, path loss compensation factor, service
  • the path loss estimate corresponding to the TRP is used to calculate the transmit power of the SRS.
  • Step 205 Send SRS to at least two TRPs based on the transmission power of the SRS.
  • the UE after determining the transmit power of the SRS, the UE can send the SRS based on the transmit power of the SRS. Under this transmit power, it can be ensured that the SRS received by each TRP has sufficient power, thereby enhancing the joint channel estimation. performance.
  • the user equipment UE can be used to receive the SRS to be jointly estimated sent by the network device, and the first indication for indicating the power control parameter of the SRS. information, and may further determine the transmit power of the SRS for joint channel estimation according to the open-loop power control parameter indicated in the first indication information.
  • the path losses of multiple TRPs performing related joint transmission can be comprehensively considered in the open-loop power control parameters, ensuring that the SRS received by each TRP performing related joint transmission has sufficient power, and ensuring joint channel estimation. accuracy.
  • Figure 3 shows a power control method for the sounding reference signal SRS according to an embodiment of the present disclosure. This method is applied to user equipment UE. Based on the embodiments shown in Figures 1 and 2, as shown in Figure 3, and may include Following steps.
  • Step 301 Receive configuration information of SRS resources sent by the network device, where the configuration information includes an SRS identifier, and the SRS identifier is used to indicate the SRS for joint channel estimation.
  • step 201 of the embodiment the implementation process is the same as step 201 of the embodiment, and will not be described again here.
  • Step 302 In response to the power control parameters including open-loop power control parameters, receive first indication information sent by the network device, where the first indication information is at least used to indicate the target received power of the SRS, the path loss compensation factor and the path loss estimation reference signal.
  • the open-loop power control parameters at least include target received power, path loss compensation factor and path loss estimation reference signal.
  • step 202 of the embodiment the implementation process is the same as step 202 of the embodiment, and will not be described again.
  • Step 303 Determine the path loss estimation value according to the path loss estimation reference signal.
  • step 203 of the embodiment the implementation process is the same as step 203 of the embodiment, and will not be described again here.
  • Step 304a In response to the power control parameter including the closed-loop power control parameter, receive second indication information sent by the network device, where the second indication information is used to indicate the power control adjustment value of the SRS.
  • the closed-loop power control parameters at least include the power control adjustment value.
  • the value of the power control adjustment state (srs-PowerControlAdjustmentStatesSRS) is required to be only separate closed-loop adjustment (separateClosedLoop) .
  • the power control adjustment value indicated by the network device can be received by executing step 304a in this embodiment.
  • third instruction information for indicating independent closed-loop power adjustment can be received by executing step 304b of the following embodiment, that is, the uplink physical shared channel adjustment value can be used to determine the power control adjustment value.
  • the specific power control adjustment value can be determined by the network device according to the SRS received by each TRP. After determining the power control adjustment value, the network device can send a signal to the UE indicating the SRS. The second indication information of the power control adjustment value, correspondingly, the UE can directly receive the power control adjustment value sent by the network device.
  • step 304b in response to the power control parameter including the closed-loop power control parameter, receiving the third indication information sent by the network device, the third indication information is used to indicate using the uplink physical shared channel adjustment value to determine the power. Control adjustment value.
  • the network device will indicate to the UE that there are at least two TRP adjustment values for PUSCH, then the power of the SRS can be based on the network
  • the configuration of the device defaults to be equal to the PUSCH adjustment value of each TRP, that is, the UE can further determine the final power control adjustment value based on the PUSCH adjustment value of each TRP. Therefore, as a possible implementation manner, the network device can send third indication information to the UE for instructing to use the uplink physical shared channel adjustment value to determine the power control adjustment value, so that the UE responds to the third indication information to determine at least two TRPs.
  • the corresponding at least two uplink physical shared channel adjustment values are determined as the power control adjustment value based on the at least two uplink physical shared channel adjustment values.
  • Step 305b In response to the third indication information, determine at least two uplink physical shared channel adjustment values corresponding to at least two TRPs, and determine the maximum uplink physical shared channel adjustment value among the at least two uplink physical shared channel adjustment values as power control Adjustment value.
  • Step 306 Calculate the transmit power of the SRS based on the second calculation formula, the target received power, the path loss compensation factor, the path loss estimate, and the power control adjustment value.
  • the formula characteristic description of the second calculation formula can be:
  • P is the transmit power of the SRS
  • P CMAX is the maximum uplink transmit power allowed by the UE
  • P 0 is the target received power
  • ⁇ is the path loss compensation factor
  • PL is the path loss estimate
  • ⁇ is other adjustment quantities
  • h Power control adjustment value, also known as closed-loop power control parameter.
  • the target received power and path loss compensation factor can be obtained through the RRC parameter indication of the network device, and the path loss estimate can be estimated through the path loss estimation reference signal indicated by the RRC parameter of the network device.
  • the path loss estimate of the TRP, PL j is the path loss estimate of the service TRP.
  • step 306 in the embodiment may specifically include: determining the maximum path loss estimate among at least two path loss estimates, based on the second calculation formula and the target received power, path loss compensation factor, maximum path loss estimate, and power control Adjust the value to calculate the transmit power of the SRS; or, calculate the maximum difference between at least two TRPs regarding the path loss estimate based on at least two path loss estimates, based on the second calculation formula after accumulating the maximum difference and the target received power, The path loss compensation factor, the path loss estimate corresponding to the serving TRP, and the power control adjustment value are used to calculate the transmit power of the SRS.
  • Step 307 Send SRS to at least two TRPs based on the transmission power of the SRS.
  • the user equipment UE can be used to receive the SRS to be jointly estimated sent by the network device, and the first indication for indicating the power control parameter of the SRS.
  • the information, the second indication information or the third indication information can further be comprehensively determined based on the open loop power control parameters and closed loop power control parameters indicated in the first indication information, the second indication information or the third indication information for joint channel estimation.
  • the transmit power of the SRS is a measure of the transmit power of the SRS.
  • the path losses of multiple TRPs performing related joint transmission can be comprehensively considered in the open-loop power control parameters, and the power control adjustment values of multiple TRPs performing related joint transmission can be comprehensively considered in the closed-loop power control parameters. It can ensure that the SRS received by each TRP that performs related joint transmission has sufficient power to ensure the accuracy of joint channel estimation.
  • Figure 4 shows a power control method for the sounding reference signal SRS according to an embodiment of the present disclosure. As shown in Figure 4, this method is applied to network equipment and may include the following steps.
  • Step 401 Send indication information indicating the power control parameters of the SRS to the user equipment UE, so that the UE determines the transmit power of the SRS according to the power control parameters, where the SRS is used for joint channel processing by at least two transmission reception points TRP of related joint transmission. It is estimated that at least one service TRP is included in at least two TRPs.
  • the network device may be a base station, and more specifically, the network device may be a service TRP in the base station.
  • the network device can send indication information indicating the power control parameters of the SRS to the user equipment UE, so that the user equipment UE can receive After receiving the indication information, power control is performed based on the power control parameters, and the transmit power of the SRS that can ensure that each TRP performing related joint transmission has joint channel estimation performance is calculated.
  • the power control parameters may include open-loop power control parameters.
  • the open-loop power control parameters are static and semi-static parameters, which can be instructed by the network device according to its own needs.
  • the UE can obtain them directly according to the instruction information sent by the network device; the power control parameters are also It may include closed-loop power control parameters.
  • the closed-loop power control parameters are parameters that change in real time and can be dynamically regulated by the network equipment according to the uplink transmission of the UE.
  • the UE determines the transmit power of the SRS according to the power control parameter. Please refer to the relevant description in step 102 of the embodiment, which will not be described again here.
  • the network device can be used to send indication information indicating the power control parameters of the SRS to the user equipment UE, so that the UE determines the transmit power of the SRS based on the power control parameters.
  • the path losses of multiple TRPs performing related joint transmission can be comprehensively considered in the power control parameters, ensuring that the SRS received by each TRP performing related joint transmission has sufficient power, and ensuring the accuracy of joint channel estimation. sex.
  • Figure 5 shows a power control method for the sounding reference signal SRS according to an embodiment of the present disclosure. This method is applied to network equipment. Based on the embodiment shown in Figure 4, as shown in Figure 5, it can include the following steps.
  • Step 501 Send configuration information of SRS resources to the UE, where the configuration information includes an SRS identifier, and the SRS identifier is used to indicate the SRS for joint channel estimation.
  • the SRS identifier may include at least an identifier, a newly defined SRS resource or a resource set.
  • the network device may send the configuration information of the SRS resources to the user equipment UE, so that the user equipment UE can, after receiving the configuration information of the SRS resources, , it can be determined as the SRS for joint channel estimation according to the SRS identifier in the configuration information.
  • the SRS can be an existing SRS.
  • an identifier can be introduced to inform the user
  • the SRS is used for joint channel estimation; as a possible implementation, the SRS can be a newly introduced SRS specifically used for joint channel estimation.
  • a new SRS name (such as SRS-ChannelEstCJTResourceSet) can be redefined for this SRS resource/resource set.
  • Step 502 In response to the power control parameter including the open-loop power control parameter, send first indication information to the UE.
  • the first indication information is at least used to indicate the target received power of the SRS, the path loss compensation factor and the path loss estimation reference signal, so that The UE determines the path loss estimation value according to the path loss estimation reference signal.
  • the existing protocol when determining the open-loop power control parameters, the existing protocol only determines based on the existing channel conditions and service requirements of the serving TRP. In order to ensure that the SRS received by each TRP performing related joint transmission has sufficient power to ensure the performance of channel estimation, in this disclosure, the channel conditions and business requirements of each TRP can be considered to comprehensively select appropriate open-loop power control parameters.
  • the network device may send first indication information indicating the open-loop power control parameter to the UE.
  • the open-loop power control parameters at least include target received power, path loss compensation factor and path loss estimation reference signal.
  • the UE after receiving the first indication information indicating that there are open-loop power control parameters sent by the network device, the UE can determine the outgoing path loss estimate based on the path loss estimation reference signal in the open-loop power control parameters, and further , the target received power, the path loss compensation factor in the open-loop power control parameters, and the calculated path loss estimate can be substituted into the first calculation formula to calculate the SRS transmit power.
  • the specific implementation process please refer to the relevant descriptions in steps 203 and 204 of the embodiment, which will not be described again here.
  • Step 503 Receive at least two path loss estimates reported by the UE, and determine the target received power and path loss compensation factor based on the at least two path loss estimates.
  • reporting of path loss estimates may be considered. That is, in response to the path loss estimation reference signal being configured as at least two downlink reference signals corresponding to at least two TRPs, the UE reports at least two path loss estimation values determined based on the at least two downlink reference signals to the network device, and the network device receives After at least two path loss estimate values are reported by the UE, the target received power and path loss compensation factor can be determined based on the at least two path loss estimate values.
  • the network device can be used to send the SRS to be jointly estimated by the user equipment UE, and the first indication information used to indicate the power control parameter of the SRS. , further enabling the UE to determine the transmit power of the SRS for joint channel estimation according to the open-loop power control parameter indicated in the first indication information.
  • the path losses of multiple TRPs performing related joint transmission can be comprehensively considered in the open-loop power control parameters, ensuring that the SRS received by each TRP performing related joint transmission has sufficient power, and ensuring joint channel estimation. accuracy.
  • Figure 6 shows a power control method for the sounding reference signal SRS according to an embodiment of the present disclosure. This method is applied to the network equipment UE. Based on the embodiments shown in Figures 4 and 5, as shown in Figure 6, and may include Following steps.
  • Step 601 Send configuration information of SRS resources to the UE, where the configuration information includes an SRS identifier, and the SRS identifier is used to indicate the SRS for joint channel estimation.
  • step 501 of the embodiment the implementation process is the same as step 501 of the embodiment, and will not be described again here.
  • Step 602 In response to the power control parameter including the open-loop power control parameter, send first indication information to the UE.
  • the first indication information is at least used to indicate the target received power of the SRS, the path loss compensation factor and the path loss estimation reference signal, so that The UE determines the path loss estimation value according to the path loss estimation reference signal.
  • the open-loop power control parameters at least include target received power, path loss compensation factor and path loss estimation reference signal.
  • step 502 of the embodiment the implementation process is the same as step 502 of the embodiment, and will not be described again here.
  • Step 603a In response to the power control parameter including the closed-loop power control parameter, send second indication information to the UE.
  • the second indication information is used to indicate the power control adjustment value of the SRS, wherein the power control adjustment value is received according to at least two TRPs.
  • the historical SRS power is determined.
  • the closed-loop power control parameters at least include the power control adjustment value.
  • the value of the power control adjustment state (srs-PowerControlAdjustmentStatesSRS) is required to be only separate closed-loop adjustment (separateClosedLoop) .
  • the power control adjustment value can be sent to the user equipment UE by executing step 603a in this embodiment.
  • the third indication information for indicating independent closed-loop power adjustment can be sent to the user equipment UE by performing the following embodiment step 603b, even if the UE can use the uplink physical shared channel adjustment value to determine Power control adjustment value.
  • the specific power control adjustment value can be determined by the network device according to the SRS received by each TRP. After determining the power control adjustment value, the network device can directly send an instruction to the UE. Second indication information of the power control adjustment value of the SRS.
  • Embodiment step 603b corresponding to embodiment step 603a in response to the power control parameter including the closed-loop power control parameter, sending third indication information to the UE.
  • the third indication information is used to instruct the uplink physical shared channel adjustment value to determine the power control adjustment value. .
  • the network device can indicate to the UE that there are at least two TRP adjustment values for PUSCH, then the power of the SRS can be based on the network
  • the configuration of the device defaults to be equal to the PUSCH adjustment value of each TRP, that is, the UE can further determine the final power control adjustment value based on the PUSCH adjustment value of each TRP. Therefore, as a possible implementation manner, the network device can send third indication information to the UE for instructing to use the uplink physical shared channel adjustment value to determine the power control adjustment value, so that the UE responds to the third indication information to determine at least two TRPs.
  • the corresponding at least two uplink physical shared channel adjustment values are determined as the power control adjustment value based on the at least two uplink physical shared channel adjustment values.
  • the UE determines at least two uplink physical shared channel adjustment values corresponding to at least two TRPs, and determines the power control adjustment value based on the at least two uplink physical shared channel adjustment values. Please refer to the relevant description in step 305b of the embodiment, which will not be described again here.
  • the UE may, according to the open-loop
  • the path loss estimation reference signal in the power control parameters determines the path loss estimate.
  • the target received power, path loss compensation factor, calculated path loss estimate in the open loop power control parameters, and the closed loop power control parameters can be The power control adjustment value in is substituted into the second calculation formula to calculate the SRS transmit power.
  • the network device can be used to send the SRS to be jointly estimated by the user equipment UE, and the first indication information used to indicate the power control parameter of the SRS.
  • the second indication information or the third indication information further allows the UE to comprehensively determine the joint channel based on the open loop power control parameters and closed loop power control parameters indicated in the first indication information, the second indication information or the third indication information.
  • Estimated SRS transmit power.
  • the path losses of multiple TRPs performing related joint transmission can be comprehensively considered in the open-loop power control parameters, and the power control adjustment values of multiple TRPs performing related joint transmission can be comprehensively considered in the closed-loop power control parameters. It can ensure that the SRS received by each TRP that performs related joint transmission has sufficient power to ensure the accuracy of joint channel estimation.
  • Figure 7 is a timing diagram of a power control method for the sounding reference signal SRS according to an embodiment of the present disclosure.
  • the method is applied to a power control system for the sounding reference signal SRS.
  • the system includes: user equipment UE and network equipment.
  • the network equipment sends indication information indicating the power control parameters of the SRS to the user equipment UE; the user equipment UE determines the power control parameters of the SRS according to the power control parameter. Determine the transmission power of the SRS; the user equipment UE sends the SRS to multiple TRPs based on the transmission power of the SRS.
  • the method includes the following steps.
  • Step 701 The network device sends the configuration information of the SRS resource to the user equipment UE.
  • the configuration information includes an SRS identifier.
  • the SRS identifier is used to indicate the SRS for joint channel estimation.
  • the SRS identifier may at least include an identifier, a newly defined SRS resource or a resource set.
  • Step 702 The network device sends indication information indicating the power control parameter of the SRS to the user equipment UE.
  • the power control parameters may include open-loop power control parameters, where the open-loop power control parameters may at least include the target received power of the SRS, a path loss compensation factor and a path loss estimation reference signal, and the open-loop power control parameters may be static or semi-static. Parameters can be instructed by the network device according to its own needs, and the UE can obtain them directly according to the instruction information sent by the network device; the power control parameters can also include closed-loop power control parameters, and the closed-loop power control parameters at least include the power control adjustment value, and the closed-loop power control parameters are specific It can be a parameter that changes in real time and can be dynamically controlled by the network device according to the uplink transmission of the UE.
  • the network device may send the first indication information indicating the open-loop power control parameter to the user equipment UE; in response to the power control parameter including the closed-loop power control parameter, the network device may send the user equipment UE Send second indication information indicating the power control adjustment value, or, in response to the power control parameter including the closed-loop power control parameter, the network device may also send a third indication information indicating the use of the uplink physical shared channel adjustment value to determine the power control adjustment value to the user equipment UE. Instructions.
  • Step 703 The user equipment UE determines the transmit power of the SRS according to the power control parameter.
  • the power control of the SRS for positioning is used for reference.
  • closed-loop power control is not considered , only consider the open-loop power control part.
  • the transmit power of the SRS can be directly determined based on the open-loop power control parameters; as a possible implementation method, the transmit power of the SRS can be calculated by comprehensively utilizing the open-loop power control parameters and the closed-loop power control parameters.
  • the UE when the UE directly determines the transmit power of the SRS based on the open-loop power control parameters, after receiving the first indication information sent by the network device indicating that there are open-loop power control parameters, the UE can determine the transmit power of the SRS based on the open-loop power control parameters.
  • the path loss estimation reference signal determines the path loss estimate.
  • the target received power, the path loss compensation factor in the open-loop power control parameters, and the calculated path loss estimate can be substituted into the first calculation formula to calculate the SRS Transmit power.
  • the relevant descriptions in steps 203 and 204 of the embodiment please refer to the relevant descriptions in steps 203 and 204 of the embodiment, which will not be described again here.
  • the UE when the UE comprehensively utilizes the open-loop power control parameters and the closed-loop power control parameters to calculate the transmit power of the SRS, the UE receives the first indication information sent by the network device indicating that there are open-loop power control parameters and indicating that there is closed-loop power control.
  • the path loss estimate can be determined according to the path loss estimation reference signal in the open-loop power control parameter.
  • the target received power and path in the open-loop power control parameter can be The loss compensation factor, the calculated path loss estimate, and the power control adjustment value in the closed-loop power control parameter are substituted into the second calculation formula to calculate the SRS transmit power.
  • the relevant descriptions in steps 303 to 306 of the embodiment which will not be described again here.
  • Step 704 The user equipment UE sends the SRS to at least two TRPs based on the transmission power of the SRS.
  • At least two TRPs contain at least one service TRP.
  • the at least two TRPs may also include other TRPs, and the other TRPs may be serving TRPs or adjacent TRPs, which are not specifically limited in this disclosure. .
  • the UE after determining the transmit power of the SRS, the UE can send the SRS based on the transmit power of the SRS. Under this transmit power, it can be ensured that the SRS received by each TRP has sufficient power, thereby enhancing the joint channel estimation. performance.
  • the path losses of multiple TRPs for related joint transmission can be comprehensively considered in the open-loop power control parameters, and the path losses of multiple TRPs for related joint transmission can be comprehensively considered in the closed-loop power control parameters.
  • the power control adjustment values of multiple TRPs can ensure that the SRS received by each TRP that performs related joint transmission has sufficient power to ensure the accuracy of joint channel estimation.
  • the methods provided by the embodiments of the present application are introduced from the perspectives of user equipment UE and network equipment respectively.
  • the user equipment UE and the network device may include a hardware structure and a software module to implement the above functions in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • a certain function among the above functions can be executed by a hardware structure, a software module, or a hardware structure plus a software module.
  • the present disclosure also provides a power control device of the sounding reference signal SRS. Since the power control device of the sounding reference signal SRS provided by the embodiment of the present disclosure is consistent with The power control methods of the sounding reference signal SRS provided in the above embodiments correspond to each other. Therefore, the implementation of the power control method of the sounding reference signal SRS is also applicable to the power control device of the sounding reference signal SRS provided in this embodiment. In this implementation The examples are not described in detail.
  • FIG. 8 is a schematic structural diagram of a power control device 800 for a sounding reference signal SRS according to an embodiment of the present disclosure.
  • the power control device 800 for the sounding reference signal SRS can be used for user equipment UE.
  • the device 800 may include:
  • the receiving module 810 is configured to receive indication information sent by the network device.
  • the indication information is used to indicate the power control parameters of the SRS, where the SRS is used for joint channel estimation of at least two transmission reception points TRP of related joint transmission, and the at least two TRPs Contains at least one service TRP;
  • Determining module 820 is used to determine the transmit power of the SRS according to the power control parameter.
  • the receiving module 810 may also be configured to receive configuration information of SRS resources sent by the network device, where the configuration information includes an SRS identifier, and the SRS identifier is used to indicate the SRS for which joint channel estimation is to be performed.
  • the receiving module 810 in response to the power control parameters including open-loop power control parameters, which include at least the target received power, the path loss compensation factor and the path loss estimation reference signal, the receiving module 810 may be configured to receive The first indication information sent by the network device, the first indication information is at least used to indicate the target received power of the SRS, the path loss compensation factor and the path loss estimation reference signal; the path loss estimation value is determined according to the path loss estimation reference signal.
  • the receiving module 810 may be configured to determine the path loss estimate value according to the downlink reference signal of the serving TRP in response to the path loss estimation reference signal being configured as a downlink reference signal of the serving TRP.
  • the receiving module 810 in response to the path loss estimation reference signal being configured as at least two downlink reference signals corresponding to at least two TRPs, the receiving module 810 may be configured to determine at least two TRP corresponding signals based on the at least two downlink reference signals. at least two road loss estimates.
  • the receiving module 810 in response to the power control parameters including closed-loop power control parameters, which at least include a power control adjustment value, the receiving module 810 may be configured to receive second indication information sent by the network device, the second indication The information is used to indicate the power control adjustment value of the SRS.
  • the receiving module 810 in response to the power control parameters including closed-loop power control parameters, which at least include a power control adjustment value, the receiving module 810 may be configured to receive third indication information sent by the network device, the third indication The information is used to instruct the uplink physical shared channel adjustment value to determine the power control adjustment value; in response to the third indication information, determine at least two uplink physical shared channel adjustment values corresponding to the at least two TRPs; adjust the at least two uplink physical shared channel The maximum uplink physical shared channel adjustment value among the values is determined as the power control adjustment value.
  • the determination module 820 may be configured to calculate the transmit power of the SRS based on the first calculation formula and the target received power, the path loss compensation factor, and the path loss estimate.
  • the determining module 820 may be configured to determine the maximum path loss estimate among the at least two path loss estimate values. value, calculate the transmit power of the SRS based on the first calculation formula and the target received power, path loss compensation factor, and maximum path loss estimate; or, calculate at least two TRPs with respect to the path loss estimate based on at least two path loss estimates.
  • the maximum difference value is calculated based on the first calculation formula after accumulating the maximum difference value and the path loss estimate corresponding to the target received power, path loss compensation factor, and service TRP.
  • the transmit power of the SRS is calculated.
  • the determination module 820 may be configured to calculate the transmit power of the SRS based on the second calculation formula and the target received power, path loss compensation factor, path loss estimate value, and power control adjustment value.
  • the determining module 820 may be configured to determine the maximum path loss estimate among the at least two path loss estimate values.
  • loss estimate calculate the transmit power of the SRS based on the second calculation formula and the target received power, path loss compensation factor, maximum path loss estimate, and power control adjustment value; or, calculate at least two path loss estimates based on at least two path loss estimates.
  • the maximum difference of the TRP regarding the path loss estimate is calculated based on the second calculation formula after accumulating the maximum difference, the target received power, the path loss compensation factor, the path loss estimate corresponding to the serving TRP, and the power control adjustment value to calculate the SRS transmission power.
  • the device 800 further includes: a sending module 830;
  • the sending module 830 is configured to send the SRS to at least two TRPs based on the transmission power of the SRS.
  • FIG. 9 is a schematic structural diagram of a power control device 900 for a sounding reference signal SRS provided by an embodiment of the present disclosure.
  • the power control device 900 for the sounding reference signal SRS can be applied to network equipment.
  • the device 900 may include:
  • the sending module 910 may be configured to send indication information indicating the power control parameters of the SRS to the user equipment UE, so that the UE determines the transmit power of the SRS according to the power control parameters, where the SRS is used for at least two transmission reception points TRP of the relevant joint transmission.
  • the SRS is used for at least two transmission reception points TRP of the relevant joint transmission.
  • at least one serving TRP is included in at least two TRPs.
  • the sending module 910 may be configured to send configuration information of SRS resources to the UE, where the configuration information includes an SRS identifier, and the SRS identifier is used to indicate the SRS for which joint channel estimation is to be performed.
  • the sending module 910 in response to the power control parameters including open-loop power control parameters, which at least include the target received power, the path loss compensation factor and the path loss estimation reference signal, the sending module 910 may be configured to The UE sends first indication information, which is at least used to indicate the target received power of the SRS, the path loss compensation factor, and the path loss estimation reference signal, so that the UE determines the path loss estimate based on the path loss estimation reference signal.
  • the sending module 910 in response to the power control parameters including closed-loop power control parameters, which include at least a power control adjustment value, the sending module 910 may be configured to send second indication information to the UE, where the second indication information is The power control adjustment value indicates the SRS, wherein the power control adjustment value is determined based on the historical SRS power received by at least two TRPs.
  • the sending module 910 in response to the power control parameters including closed-loop power control parameters, which include at least a power control adjustment value, the sending module 910 may be configured to send third indication information to the UE, where the third indication information is The instruction uses the uplink physical shared channel adjustment value to determine the power control adjustment value.
  • FIG. 10 is a schematic structural diagram of a communication device 1000 provided by an embodiment of the present application.
  • the communication device 1000 may be a network device, a user equipment, a chip, a chip system, or a processor that supports network equipment to implement the above method, or a chip, a chip system, or a processor that supports user equipment to implement the above method. Processor etc.
  • the device can be used to implement the method described in the above method embodiment. For details, please refer to the description in the above method embodiment.
  • Communication device 1000 may include one or more processors 1001.
  • the processor 1001 may be a general-purpose processor or a special-purpose processor, or the like.
  • it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data.
  • the central processor can be used to control communication devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) and execute computer programs. , processing data for computer programs.
  • the communication device 1000 may also include one or more memories 1002, on which a computer program 1004 may be stored.
  • the processor 1001 executes the computer program 1004, so that the communication device 1000 executes the method described in the above method embodiment.
  • the memory 1002 may also store data.
  • the communication device 1000 and the memory 1002 can be provided separately or integrated together.
  • the communication device 1000 may also include a transceiver 1005 and an antenna 1006.
  • the transceiver 1005 may be called a transceiver unit, a transceiver, a transceiver circuit, etc., and is used to implement transceiver functions.
  • the transceiver 1005 may include a receiver and a transmitter.
  • the receiver may be called a receiver or a receiving circuit, etc., used to implement the receiving function;
  • the transmitter may be called a transmitter, a transmitting circuit, etc., used to implement the transmitting function.
  • the communication device 1000 may also include one or more interface circuits 1007.
  • the interface circuit 1007 is used to receive code instructions and transmit them to the processor 1001 .
  • the processor 1001 executes code instructions to cause the communication device 1000 to perform the method described in the above method embodiment.
  • the processor 1001 may include a transceiver for implementing receiving and transmitting functions.
  • the transceiver may be a transceiver circuit, an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits used to implement the receiving and transmitting functions can be separate or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit can be used for reading and writing codes/data, or the above-mentioned transceiver circuit, interface or interface circuit can be used for signal transmission or transfer.
  • the processor 1001 may store a computer program 1003, and the computer program 1003 runs on the processor 1001, causing the communication device 1000 to perform the method described in the above method embodiment.
  • the computer program 1003 may be solidified in the processor 1001, in which case the processor 1001 may be implemented by hardware.
  • the communication device 1000 may include a circuit, which may implement the functions of sending or receiving or communicating in the foregoing method embodiments.
  • the processor and transceiver described in this application can be implemented in integrated circuits (ICs), analog ICs, radio frequency integrated circuits RFICs, mixed signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board (PCB), electronic equipment, etc.
  • the processor and transceiver can also be manufactured using various IC process technologies, such as complementary metal oxide semiconductor (CMOS), n-type metal oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS n-type metal oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the communication device described in the above embodiments may be a network device or user equipment, but the scope of the communication device described in this application is not limited thereto, and the structure of the communication device may not be limited by FIG. 10 .
  • the communication device may be a stand-alone device or may be part of a larger device.
  • the communication device can be:
  • the IC collection may also include storage components for storing data and computer programs;
  • the communication device may be a chip or a chip system
  • the schematic structural diagram of the chip shown in FIG. 11 refer to the schematic structural diagram of the chip shown in FIG. 11 .
  • the chip shown in Figure 11 includes a processor 1101 and an interface 1102.
  • the number of processors 1101 may be one or more, and the number of interfaces 1102 may be multiple.
  • the chip also includes a memory 1103, which is used to store necessary computer programs and data.
  • This application also provides a readable storage medium on which instructions are stored. When the instructions are executed by a computer, the functions of any of the above method embodiments are implemented.
  • This application also provides a computer program product, which, when executed by a computer, implements the functions of any of the above method embodiments.
  • a computer program product includes one or more computer programs.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer program may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program may be transmitted from a website, computer, server or data center via a wireline (e.g.
  • Coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless means to transmit to another website, computer, server or data center.
  • Computer-readable storage media can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or other integrated media that contains one or more available media. Available media may be magnetic media (e.g., floppy disks, hard disks, tapes), optical media (e.g., high-density digital video discs (DVD)), or semiconductor media (e.g., solid state disks (SSD)) )wait.
  • magnetic media e.g., floppy disks, hard disks, tapes
  • optical media e.g., high-density digital video discs (DVD)
  • semiconductor media e.g., solid state disks (SSD)
  • At least one in this application can also be described as one or more, and the plurality can be two, three, four or more, which is not limited by this application.
  • the technical feature is distinguished by “first”, “second”, “third”, “A”, “B”, “C” and “D”, etc.
  • the technical features described in “first”, “second”, “third”, “A”, “B”, “C” and “D” are in no particular order or order.
  • machine-readable medium and “computer-readable medium” refer to any computer program product, apparatus, and/or means for providing machine instructions and/or data to a programmable processor (for example, magnetic disks, optical disks, memories, programmable logic devices (PLD)), including machine-readable media that receive machine instructions as machine-readable signals.
  • machine-readable signal refers to any signal used to provide machine instructions and/or data to a programmable processor.
  • the systems and techniques described herein may be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., A user's computer having a graphical user interface or web browser through which the user can interact with implementations of the systems and technologies described herein), or including such backend components, middleware components, or any combination of front-end components in a computing system.
  • the components of the system may be interconnected by any form or medium of digital data communication (eg, a communications network). Examples of communication networks include: local area network (LAN), wide area network (WAN), and the Internet.
  • Computer systems may include clients and servers.
  • Clients and servers are generally remote from each other and typically interact over a communications network.
  • the relationship of client and server is created by computer programs running on corresponding computers and having a client-server relationship with each other.

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Abstract

La présente divulgation se rapporte au domaine technique des communications mobiles, et concerne un procédé et un appareil de commande de puissance d'un signal de référence de sondage (SRS). Selon le procédé de commande de puissance d'un signal de référence de sondage (SRS) fourni dans un mode de réalisation, un équipement utilisateur (UE) peut recevoir des informations d'indication envoyées par un dispositif de réseau, les informations d'indication étant utilisées pour indiquer un paramètre de commande de puissance pour un SRS, le SRS étant utilisé pour effectuer une estimation de canal commun sur au moins deux points de transmission-réception (TRP) pour une transmission conjointe cohérente, et lesdits au moins deux TRP comprenant au moins un TRP de desserte; et déterminer la puissance de transmission du SRS en fonction du paramètre de commande de puissance. La présente divulgation peut garantir que le SRS reçu par chaque TRP effectuant une transmission conjointe cohérente a une puissance suffisante, ce qui permet d'améliorer les performances d'estimation de canal commun.
PCT/CN2022/111918 2022-08-11 2022-08-11 Procédé et appareil de commande de puissance de signal de référence de sondage (srs) Ceased WO2024031576A1 (fr)

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PCT/CN2022/111918 WO2024031576A1 (fr) 2022-08-11 2022-08-11 Procédé et appareil de commande de puissance de signal de référence de sondage (srs)

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