WO2021003623A1 - Procédé, appareil et dispositif de commande de puissance de transmission pendant des communications par connexion directe, et support de stockage - Google Patents

Procédé, appareil et dispositif de commande de puissance de transmission pendant des communications par connexion directe, et support de stockage Download PDF

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Publication number
WO2021003623A1
WO2021003623A1 PCT/CN2019/094949 CN2019094949W WO2021003623A1 WO 2021003623 A1 WO2021003623 A1 WO 2021003623A1 CN 2019094949 W CN2019094949 W CN 2019094949W WO 2021003623 A1 WO2021003623 A1 WO 2021003623A1
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Prior art keywords
rsrp
rsrp report
report
transmission power
power control
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PCT/CN2019/094949
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English (en)
Chinese (zh)
Inventor
赵群
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北京小米移动软件有限公司
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Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to PCT/CN2019/094949 priority Critical patent/WO2021003623A1/fr
Priority to CN201980001266.9A priority patent/CN110463234B/zh
Publication of WO2021003623A1 publication Critical patent/WO2021003623A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
    • H04W52/226—TPC being performed according to specific parameters taking into account previous information or commands using past references to control power, e.g. look-up-table
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup

Definitions

  • the present disclosure relates to the field of mobile communications, and in particular to a method, device, equipment and storage medium for transmitting power control of direct communication.
  • V2X Vehicle to Everything
  • V2V Vehicle to Vehicle
  • V2I Vehicle to Infrastructure
  • V2P vehicle to person
  • V2N Vehicle to Network
  • the embodiments of the present disclosure provide a transmission power control method, device, equipment, and storage medium for direct communication, which can be used to solve the unicast service and multicast service for direct communication. How to adjust the sending end user equipment reasonably Power to reduce interference problems.
  • the technical solution is as follows:
  • a transmission power control method for direct communication is provided, which is applied to a first UE in V2X, and the method includes:
  • the first UE sends the i-th Direct Link Reference Signal Received Power (SL-RSRP) report to the second UE, and the i-th SL-RSRP report is used for the second UE.
  • the UE performs transmit power control, and i is an integer;
  • the first UE restarts the high-layer filtering of the SL-RSRP after sending the i-th SL-RSRP report after the duration of T;
  • the first UE sends an i+1th RSRP report to the second UE, and the i+1th SL-RSRP report is used for the second UE to perform transmit power control.
  • said restarting the high-level filtering of SL-RSRP includes:
  • the F n-1 is the filtered measurement result before the update
  • the F n is the filtered measurement result after the update
  • a is a configuration parameter.
  • a transmission power control method for direct communication is provided, which is applied to a UE in V2X, and the method includes:
  • the second UE performs transmit power control according to the i-th SL-RSRP report within T time period after receiving the i-th SL-RSRP report;
  • the i-th SL-RSRP report is generated after the first UE restarts the high-layer filtering of the SL-RSRP after the length of T after sending the i-1th SL-RSRP report.
  • a transmission power control method for direct communication which is applied to a first UE in V2X, and the method includes:
  • the first UE sends the SL-RSRP report to the second UE, and the SL-RSRP report is used for the second UE to perform transmit power control.
  • a transmission power control method for direct communication which is applied to a second UE in V2X, and the method includes:
  • the second UE Receiving, by the second UE, the SL-RSRP report reported by the first UE, where the SL-RSRP in the SL-RSRP report is the SL-RSRP without high-layer filtering;
  • the second UE performs transmit power control according to the SL-RSRP report.
  • a transmission power control device for direct communication comprising:
  • a sending module configured to send an i-th SL-RSRP report to the second UE, where the i-th SL-RSRP report is used for the second UE to perform transmit power control, and i is an integer;
  • the restarting module is configured to restart the high-level filtering of the SL-RSRP after sending the i-th SL-RSRP report after T duration;
  • the sending module is configured to send an i+1th RSRP report to the second UE, and the i+1th SL-RSRP report is used for the second UE to perform transmit power control.
  • the restarting module is configured to initialize F n-1 to 0; initialize F n to M n , and M n to be the most recent physical layer measurement result; restart all operations according to the following formula
  • the F n-1 is the filtered measurement result before the update
  • the F n is the filtered measurement result after the update
  • a is a configuration parameter.
  • a transmission power control device for direct communication comprising:
  • a receiving module configured to receive the i-th SL-RSRP report sent by the first UE
  • An adjustment module configured to perform transmit power control according to the i-th SL-RSRP report within T time period after receiving the i-th SL-RSRP report;
  • the i-th SL-RSRP report is generated after the first UE restarts the high-layer filtering of the SL-RSRP after the length of T after sending the i-1th SL-RSRP report.
  • a transmission power control device for direct communication comprising:
  • the measurement module is configured to measure the received power of the reference signal sent by the second UE, and generate an SL-RSRP report without high-layer filtering;
  • the sending module is configured to send the SL-RSRP report to the second UE, where the SL-RSRP report is used for the second UE to perform transmit power control.
  • a transmission power control device for direct communication comprising:
  • a sending module configured to send a reference signal to the first UE
  • a receiving module configured to receive the SL-RSRP report reported by the first UE, where the SL-RSRP in the SL-RSRP report is the SL-RSRP that has not been filtered by a higher layer;
  • the sending module is configured to perform transmission power control according to the SL-RSRP report.
  • a V2X receiving device in another aspect, includes:
  • a transceiver connected to the processor
  • the processor is configured to load and execute executable instructions to implement the transmit power control method for direct communication performed by the first UE as described in the above aspect.
  • a V2X sending device in another aspect, includes:
  • a transceiver connected to the processor
  • the processor is configured to load and execute executable instructions to implement the transmission power control method for direct communication performed by the second UE as described in the above aspect.
  • a computer-readable storage medium stores at least one instruction, at least one program, code set or instruction set, the at least one instruction, the at least one program, The code set or the instruction set is loaded and executed by the processor to implement the transmission power control method for direct communication as described in the above aspect.
  • the i-th SL-RSRP report is used for the second UE to perform the i-th transmit power adjustment, and the first UE restarts
  • the high-level filtering of the subsequent SL-RSRP performs long-term monitoring of the new transmit power adjusted for the i-th time of the second UE, thereby obtaining the i+1th SL-RSRP report, which is used for the i+1th SL-RSRP report
  • the second UE can obtain a more accurate SL-RSRP report on the transmit power after each adjustment, and improve the sending end user equipment's
  • the accuracy of the transmission power control reduces the interference between the various user equipments during the vehicle networking communication.
  • Fig. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present disclosure
  • Fig. 2 shows a flow chart of a method for controlling transmit power of direct communication provided by an exemplary embodiment of the present disclosure
  • Fig. 3 shows a flow chart of a method for controlling transmit power of direct communication provided by an exemplary embodiment of the present disclosure
  • Fig. 4 shows a flow chart of a method for controlling transmit power of direct communication provided by an exemplary embodiment of the present disclosure
  • FIG. 5 shows a schematic diagram of time slot performance of a method for controlling transmit power of direct communication according to an exemplary embodiment of the present disclosure
  • Fig. 6 shows a flow chart of a method for controlling transmit power of direct communication provided by an exemplary embodiment of the present disclosure
  • FIG. 7 shows a schematic structural diagram of a transmission power control device for direct communication provided by an exemplary embodiment of the present disclosure
  • FIG. 8 shows a schematic structural diagram of a transmission power control apparatus for direct communication provided by an exemplary embodiment of the present disclosure
  • FIG. 9 shows a schematic structural diagram of a transmission power control apparatus for direct communication provided by an exemplary embodiment of the present disclosure.
  • FIG. 10 shows a schematic structural diagram of a transmission power control device for direct communication provided by an exemplary embodiment of the present disclosure
  • Fig. 11 is a schematic structural diagram of a user equipment provided by another exemplary embodiment of the present disclosure.
  • Fig. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present disclosure.
  • the communication system may be a schematic diagram of a non-roaming 5G system architecture (Non-roaming 5G system architecture), and the system architecture may be applied to a vehicle to everything (V2X) service using D2D technology.
  • Non-roaming 5G system architecture Non-roaming 5G system architecture
  • V2X vehicle to everything
  • the system architecture includes a data network (Data Network, DN), and the data network is provided with a V2X application server (Application Server) required for V2X services.
  • the system architecture also includes a 5G core network.
  • the network functions of the 5G core network include: Unified Data Management (UDM), Policy Control Function (PCF), Network Exposure Function (NEF), Application function (AF), unified data storage (Unified Data Repository, UDR), access and mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), and user interface Function (User Plane Function, UPF).
  • the system architecture also includes: a radio access network (New Generation-Radio Access Network, NG-RAN) and four user equipments (ie, user equipment 1 to user equipment 4) shown by way of example, where each user equipment V2X application (Application) is installed.
  • NG-RAN New Generation-Radio Access Network
  • user equipment 1 to user equipment 4 shown by way of example, where each user equipment V2X application (Application) is installed.
  • gNB base stations
  • the data network and the user plane function in the 5G core network are connected through the N6 reference point (Reference Point), the V2X application server is connected with the V2X application in the user equipment through the V1 reference point; the wireless access network is connected with the 5G core network
  • the AMF function and UPF function in the connection the wireless access network is connected to the user equipment 1 and the user equipment 5 through the Uu reference point; multiple user equipment is directly connected through the PC5 reference point, and multiple V2X applications pass through V5 reference point connection.
  • the aforementioned reference point may also be referred to as an "interface".
  • RAN1 decided to support the use of a physical layer hybrid automatic repeat reQuest (Hybrid Automatic Repeat reQuest, HARQ) retransmission mechanism for unicast and multicast services of direct communication.
  • transmission power control is supported based on the path loss from the user equipment at the transmitting end to the user equipment at the receiving end.
  • the receiving end user equipment is supported to report the SL-RSRP report to the sending end user equipment, and the sending end user equipment performs path loss estimation based on the SL-RSRP report, and then adjusts the transmission according to the estimation result of the path loss estimation power.
  • SL-RSRP is the long-term measurement result of the user equipment at the receiving end after being filtered by a higher layer (layer 3).
  • the user equipment at the receiving end measures the reference signal sent by the user equipment at the transmitting end at a certain time interval, and the reference signal may be a demodulation reference signal or a demodulation reference signal.
  • the upper layer in the user equipment at the receiving end uses the following formula to filter the measurement results:
  • M n is the most recent physical layer measurement result
  • F n-1 is the filter measurement result before the update
  • F n is the filter measurement result after the update
  • a 1/2 (ki/4)
  • k i is the configuration value.
  • the path loss estimation method in the uplink transmit power control of the user equipment is:
  • referenceSignalPower is the transmit power of the downlink reference signal sent by the base station to the user equipment, and the transmit power is usually kept constant; higher layer filtered RSRP is the received power of the downlink reference signal measured by the user equipment.
  • the SL-RSRP report is a long-term measurement result.
  • the SL-RSRP value is a weighted average of multiple measurement results over a long period of time.
  • the transmission power of the base station when transmitting the downlink reference signal remains unchanged.
  • the transmit power of the user equipment at the transmitting end is continuously adjusted according to the path loss estimation. If the transmit power of the transmitter corresponding to the multiple measured values measured by the user equipment at the receiving end is inconsistent, it is difficult to perform a correct path loss estimation based on the SL-RSRP value, which affects the effect of power control for direct communication.
  • Fig. 2 shows a flow chart of a method for controlling transmit power of direct communication provided by an exemplary embodiment of the present disclosure.
  • the method may be executed by the first UE in V2X (such as UE1 in FIG. 1), and the method includes:
  • Step 201 The first UE sends the i-th SL-RSRP report to the second UE, and the i-th SL-RSRP report is used for the second UE to perform transmit power control.
  • the first UE is user equipment at the receiving end, and the second UE is user equipment at the transmitting end.
  • the second UE periodically sends a reference signal to the first UE.
  • the reference signal may be a demodulation reference signal (Demodulation Reference Signal, DMRS); or, the reference signal may be a channel state information reference signal (Channel State Information-Reference Signal). , CSI-RS).
  • DMRS Demodulation Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • the SL-RSRP report carries the SL-RSRP measured by the first UE.
  • the SL-RSRP is the SL-RSRP after the higher layer (layer 3) in the first UE performs the higher layer filtering (L3 filter).
  • the first UE periodically sends an SL-RSRP report to the second UE.
  • the i-th SL-RSRP report may be any one of multiple SL-RSRP reports periodically reported, and i is an integer.
  • the second UE receives the i-th SL-RSRP report, the i-th transmit power control can be performed.
  • the second UE After the second UE receives the i-th SL-RSRP report, it is based on the transmission power of the latest reference signal (for example, the adjusted transmission power according to the i-1th SL-RSRP report) and the i-th SL-RSRP report. -Calculate the path loss based on the received power in the RSRP report, and then perform transmit power control based on the path loss.
  • the latest reference signal for example, the adjusted transmission power according to the i-1th SL-RSRP report
  • the i-th SL-RSRP report -Calculate the path loss based on the received power in the RSRP report, and then perform transmit power control based on the path loss.
  • Step 202 The first UE restarts the high-level filtering of the SL-RSRP after sending the i-th SL-RSRP report after the duration of T.
  • the first UE After the first UE sends the i-th SL-RSRP report for the duration of T, the first UE considers that the i-th transmit power control of the second UE has been adjusted, and restarts the high-level filtering of the SL-RSRP. That is, T is greater than the time required for the second UE to adjust the transmission power according to the i-th SL-RSRP report.
  • the second UE adjusts the transmission power only once according to the i-th SL-RSRP before receiving the i+1-th RSRP report.
  • Restarting the high-level filtering of SL-RSRP refers to clearing the historical filtering measurement results and restarting a new round of high-level filtering of SL-RSRP.
  • Step 203 The first UE sends an i+1 th RSRP report to the second UE, and the i+1 th SL-RSRP report is used for the second UE to perform transmit power control.
  • the first UE monitors the SL-RSRP for a period of time, and then waits for the next wave-up opportunity, the first UE sends the i+1th RSRP report to the second UE.
  • the i+1th SL-RSRP report is used for the second UE to perform the i+1th transmit power control.
  • the second UE After the second UE receives the i+1th SL-RSRP report, it is based on the transmission power of the latest reference signal (for example, the adjusted transmission power according to the i-th SL-RSRP report) and the i+1th SL-RSRP report.
  • the received power in the SL-RSRP report is used to calculate the path loss, and then the transmission power control is performed according to the path loss.
  • the foregoing steps 201 to 203 may be periodically performed multiple times.
  • the method provided in this embodiment restarts the high-level filtering of SL-RSRP after sending the i-th SL-RSRP report, and the i-th SL-RSRP report is used for the second UE to perform the i-th time
  • the transmission power adjustment of the first UE through the high-level filtering of the restarted SL-RSRP performs long-term monitoring of the new transmission power of the second UE after the i-th adjustment to obtain the i+1th SL-RSRP report
  • the i+1th SL-RSRP report is used for the second UE to perform the i+1th transmit power adjustment, so that the second UE can obtain a more accurate SL-RSRP report for the transmit power adjusted each time ,
  • To improve the accuracy of the transmission power control of the transmitting end user equipment during the IoV communication thereby reducing the interference between various user equipment during IoV communication.
  • Fig. 3 shows a flow chart of a method for controlling transmit power of direct communication provided by an exemplary embodiment of the present disclosure. This method may be executed by a second UE in V2X (such as UE2 in FIG. 1), and the method includes:
  • Step 301 The second UE receives the i-th SL-RSRP report sent by the first UE;
  • the first UE is user equipment at the receiving end, and the second UE is user equipment at the transmitting end.
  • the second UE periodically sends a reference signal to the first UE.
  • the reference signal may be a Demodulation Reference Signal (DMRS); or, the reference signal may be a Channel State Information-Reference Signal (Channel State Information-Reference Signal). , CSI-RS).
  • DMRS Demodulation Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • the SL-RSRP report carries the SL-RSRP measured by the first UE.
  • the SL-RSRP is the SL-RSRP after the higher layer (layer 3) in the first UE performs the higher layer filtering (L3 filter).
  • the first UE periodically sends an SL-RSRP report to the second UE.
  • the i-th SL-RSRP report may be any one of multiple SL-RSRP reports periodically reported, and i is an integer.
  • the second UE After the second UE receives the i-th SL-RSRP report, it can perform the i-th transmit power control.
  • Step 302 The second UE performs transmit power control according to the i-th SL-RSRP report within T time period after receiving the i-th SL-RSRP report;
  • the second UE After the second UE receives the i-th SL-RSRP report, according to the transmit power of the latest reference signal (for example, the adjusted transmit power according to the i-1th SL-RSRP report) and the i-th SL-RSRP report Calculate the path loss based on the received power of, and then perform the i-th transmit power control based on the path loss.
  • the transmit power of the latest reference signal for example, the adjusted transmit power according to the i-1th SL-RSRP report
  • the i-th SL-RSRP report Calculate the path loss based on the received power of, and then perform the i-th transmit power control based on the path loss.
  • the i-th SL-RSRP report is generated after the first UE restarts the high-level filtering of the SL-RSRP after sending the i-1th SL-RSRP report for T duration.
  • the IoV communication between the first UE and the second UE may be unicast communication of direct communication, or multicast communication.
  • the method provided in this embodiment restarts the high-level filtering of SL-RSRP after sending the i-th SL-RSRP report, and the i-th SL-RSRP report is used for the second UE to perform the i-th time
  • the transmission power adjustment of the first UE through the high-level filtering of the restarted SL-RSRP performs long-term monitoring of the new transmission power of the second UE after the i-th adjustment to obtain the i+1th SL-RSRP report
  • the i+1th SL-RSRP report is used for the second UE to perform the i+1th transmit power adjustment, so that the second UE can obtain a more accurate SL-RSRP report for the transmit power adjusted each time ,
  • To improve the accuracy of the transmission power control of the transmitting end user equipment during the IoV communication thereby reducing the interference between various user equipment during IoV communication.
  • Fig. 4 is a flowchart of a transmission power control method for direct communication provided according to an exemplary embodiment of the present disclosure.
  • the method may be executed by the first UE and the second UE in V2X (such as UE1 and UE2 in FIG. 1), and the method includes:
  • Step 401 The second UE uses the i-th transmit power to transmit a reference signal to the first UE.
  • the first UE is user equipment at the receiving end, and the second UE is user equipment at the transmitting end.
  • the second UE uses the i-th transmit power to periodically send a reference signal to the first UE.
  • the reference signal may be a DMRS or a CSI-RS.
  • the transmission power may be predefined by the communication protocol, or pre-configured by the access network device, or a default value in the second UE.
  • the i-th transmit power may be adjusted by the second UE according to the latest SL-RSRP report.
  • Step 402 The first UE measures the received power of the reference signal sent by the second UE, and obtains the i-th SL-RSRP report by using high-layer filtering;
  • the first UE measures the reference signal sent by the second UE, and obtains the latest reference signal received power (that is, the physical layer measurement result). Use high-level filtering to obtain the i-th SL-RSRP report.
  • the upper layer in the first UE uses the following formula to filter the measurement results:
  • M n is the most recent physical layer measurement result
  • F n-1 is the filter measurement result before the update
  • F n is the filter measurement result after the update
  • a 1/2 (ki/4)
  • k i is the configuration value.
  • Step 403 The first UE sends the i-th SL-RSRP report to the second UE.
  • Step 404 The first UE restarts the high-level filtering of the SL-RSRP after sending the i-th SL-RSRP report after the duration of T.
  • Restarting the high-level filtering of SL-RSRP refers to clearing the historical filtering measurement results and restarting a new round of high-level filtering of SL-RSRP.
  • the first UE starts a timer after sending the i-th SL-RSRP report.
  • the timing duration of this timer is T.
  • the timer expires, the high-level filtering of SL-RSRP is restarted, as shown in Figure 5.
  • the first UE restarting the high-level filtering of SL-RSRP includes:
  • F n-1 is the filtered measurement result before the update
  • F n is the filtered measurement result after the update
  • a is the configuration parameter.
  • a 1/2 (ki/4)
  • k i is the configuration value.
  • T is greater than the time required for the second UE to adjust the transmission power according to the i-th SL-RSRP report.
  • T is a fixed value or a pre-configured value.
  • the first UE also receives downlink configuration signaling sent by the access network device; T is determined according to the downlink configuration signaling.
  • Step 405 After receiving the i-th SL-RSRP report, the second UE performs transmit power control according to the i-th SL-RSRP report;
  • the second UE performs transmit power control according to the i-th SL-RSRP report within T time period after receiving the i-th SL-RSRP report.
  • the second UE obtains the i-th SL-RSRP according to the i-th SL-RSRP report.
  • the second UE calculates the power difference between the i-th transmission power and the i-th SL-RSRP, that is, the path loss.
  • the second UE adjusts the transmission power according to the path loss to obtain the i+1th transmission power.
  • Step 406 The second UE sends the reference signal to the first UE by using the i+1th transmit power.
  • the second UE periodically sends a reference signal to the first UE using the i+1th transmission power, and the reference signal may be a DMRS or a CSI-RS.
  • Step 407 The first UE measures the received power of the reference signal sent by the second UE, and obtains the i+1th SL-RSRP report by using high-layer filtering;
  • the first UE measures the reference signal sent by the second UE, and obtains the latest reference signal received power (that is, the physical layer measurement result).
  • the i+1th SL-RSRP report is obtained by the high-level filtering after the restart.
  • the upper layer in the first UE uses the following formula to filter the measurement results:
  • M n is the most recent physical layer measurement result
  • F n-1 is the filter measurement result before the update
  • F n is the filter measurement result after the update
  • a 1/2 (ki/4)
  • k i is the configuration value.
  • Step 408 The first UE sends the i+1th SL-RSRP report to the second UE;
  • Step 409 The first UE restarts the high-level filtering of the SL-RSRP after sending the i+1th SL-RSRP report after T duration;
  • Restarting the high-level filtering of SL-RSRP refers to clearing the historical filtering measurement results and restarting a new round of high-level filtering of SL-RSRP.
  • the first UE starts the timer after sending the i+1th SL-RSRP report.
  • the timing duration of this timer is T.
  • the timer expires, the high-level filtering of SL-RSRP is restarted, as shown in Figure 5.
  • the first UE restarting the high-level filtering of SL-RSRP includes:
  • F n-1 is the filtered measurement result before the update
  • F n is the filtered measurement result after the update
  • a is the configuration parameter.
  • a 1/2 (ki/4)
  • k i is the configuration value.
  • T is greater than the time required for the second UE to adjust the transmission power according to the i+1th SL-RSRP report.
  • T is a fixed value or a pre-configured value.
  • the first UE also receives downlink configuration signaling sent by the access network device; and determines T according to the downlink configuration signaling.
  • Step 410 After receiving the i+1th SL-RSRP report, the second UE performs transmit power control according to the i+1th SL-RSRP report.
  • the second UE performs transmit power control according to the (i+1)th SL-RSRP report within T time period after receiving the (i+1)th SL-RSRP report.
  • the second UE obtains the (i+1)th SL-RSRP from the (i+1)th SL-RSRP report.
  • the second UE calculates the power difference between the i+1th transmission power and the i+1th SL-RSRP, that is, the path loss.
  • the second UE adjusts the transmission power according to the path loss to obtain the i+2th transmission power.
  • the method provided in this embodiment restarts the high-level filtering of SL-RSRP after sending the i-th SL-RSRP report, and the i-th SL-RSRP report is used for the second UE to perform the i-th time
  • the transmission power adjustment of the first UE through the high-level filtering of the restarted SL-RSRP performs long-term monitoring of the new transmission power of the second UE after the i-th adjustment to obtain the i+1th SL-RSRP report
  • the i+1th SL-RSRP report is used for the second UE to perform the i+1th transmit power adjustment, so that the second UE can obtain a more accurate SL-RSRP report for the transmit power adjusted each time ,
  • To improve the accuracy of the transmission power control of the transmitting end user equipment during the IoV communication thereby reducing the interference between various user equipment during IoV communication.
  • the steps performed by the first UE in the above-mentioned embodiments can be separately implemented as the transmit power control method for the direct communication on the first UE side; the steps performed by the second UE can be separately implemented as the direct communication on the second UE side.
  • the transmission power control method can be separately implemented as the transmit power control method for the direct communication on the first UE side; the steps performed by the second UE can be separately implemented as the direct communication on the second UE side.
  • Fig. 6 shows a flowchart of a method for controlling transmit power of direct communication provided by another exemplary embodiment of the present disclosure.
  • the method may be executed by the first UE and the second UE in V2X (such as UE1 and UE2 in FIG. 1), and the method includes:
  • Step 601 The second UE sends a reference signal to the first UE;
  • Step 602 The first UE measures the received power of the reference signal sent by the second UE, and generates an SL-RSRP report without high-layer filtering;
  • SL-RSRP report without high-level filtering refers to high-level filtering achieved by setting a in the above formula to 1, which essentially does not use high-level filtering.
  • Step 603 The first UE sends an SL-RSRP report to the second UE, where the SL-RSRP report is used for the second UE to perform transmit power control;
  • Step 604 The second UE receives the SL-RSRP report reported by the first UE, and the SL-RSRP in the SL-RSRP report is the SL-RSRP that has not been filtered by a higher layer;
  • Step 605 The second UE performs transmit power control according to the SL-RSRP report.
  • the first UE sends the SL-RSRP report without high-layer filtering to the second UE, so that the second UE can obtain a more accurate SL-RSRP report for each adjusted transmit power.
  • -RSRP report to improve the accuracy of the transmission power control of the transmitting end user equipment during the IoV communication, thereby reducing the interference between various user equipment during IoV communication.
  • Fig. 7 is a block diagram of a transmission power control device for direct communication provided by an exemplary embodiment of the present disclosure.
  • the device can be implemented as all or a part of the first UE through software, hardware or a combination of both.
  • the device includes:
  • the sending module 720 is configured to send an i-th SL-RSRP report to the second UE, where the i-th SL-RSRP report is used for the second UE to perform transmit power control, and i is an integer;
  • the restarting module 740 is configured to restart the high-level filtering of the SL-RSRP after sending the i-th SL-RSRP report after T duration;
  • the sending module 720 is configured to send an i+1th RSRP report to the second UE, and the i+1th SL-RSRP report is used for the second UE to perform transmit power control.
  • the restart module 740 is configured to initialize F n-1 to 0; initialize F n to M n , and M n to be the most recent physical layer measurement result; restart the process according to the following formula The high-level filtering of the SL-RSRP:
  • the F n-1 is the filtered measurement result before the update
  • the F n is the filtered measurement result after the update
  • a is a configuration parameter.
  • a 1/2 (ki/4)
  • ki is a configuration value
  • the T is greater than the time required for the second UE to adjust the transmission power according to the i-th SL-RSRP report.
  • the T is: a fixed value; or, a pre-configured value.
  • the device further includes:
  • the receiving module 760 is configured to receive downlink configuration signaling sent by the access network device
  • the restart module 740 is configured to determine the T according to the downlink configuration signaling.
  • the device provided in this embodiment restarts the high-level filtering of SL-RSRP after sending the i-th SL-RSRP report, and the i-th SL-RSRP report is used for the second UE to perform the i-th time
  • the transmission power adjustment of the first UE through the high-level filtering of the restarted SL-RSRP performs long-term monitoring of the new transmission power of the second UE after the i-th adjustment to obtain the i+1th SL-RSRP report
  • the i+1th SL-RSRP report is used for the second UE to perform the i+1th transmit power adjustment, so that the second UE can obtain a more accurate SL-RSRP report for the transmit power adjusted each time ,
  • To improve the accuracy of the transmission power control of the transmitting end user equipment during the IoV communication thereby reducing the interference between various user equipment during IoV communication.
  • Fig. 8 is a block diagram of a transmission power control device for direct communication provided by an exemplary embodiment of the present disclosure.
  • the device can be implemented as all or part of the second UE through software, hardware or a combination of both.
  • the device includes:
  • the receiving module 820 is configured to receive the i-th SL-RSRP report sent by the first UE;
  • the adjustment module 840 is configured to perform transmit power control according to the i-th SL-RSRP report within T time period after receiving the i-th SL-RSRP report;
  • the i-th SL-RSRP report is generated after the first UE restarts the high-layer filtering of the SL-RSRP after the length of T after sending the i-1th SL-RSRP report.
  • the adjustment module 840 is configured to obtain the i-th transmit power of the reference signal, and the i-th transmit power is before receiving the i-th SL-RSRP report The power used when transmitting the reference signal; the received power of the reference signal is obtained according to the i-th SL-RSRP report; the path loss is calculated according to the difference between the i-th transmission power and the received power ; Calculate the i+1th transmit power according to the path loss.
  • the adjustment module 840 is configured to maintain the i+1th transmission power before receiving the i+1th SL-RSRP report.
  • the device provided in this embodiment restarts the high-level filtering of SL-RSRP after sending the i-th SL-RSRP report, and the i-th SL-RSRP report is used for the second UE to perform the i-th time
  • the transmission power adjustment of the first UE through the high-level filtering of the restarted SL-RSRP performs long-term monitoring of the new transmission power of the second UE after the i-th adjustment to obtain the i+1th SL-RSRP report
  • the i+1th SL-RSRP report is used for the second UE to perform the i+1th transmit power adjustment, so that the second UE can obtain a more accurate SL-RSRP report for the transmit power adjusted each time ,
  • To improve the accuracy of the transmission power control of the transmitting end user equipment during the IoV communication thereby reducing the interference between various user equipment during IoV communication.
  • Fig. 9 is a block diagram of a transmission power control device for direct communication provided by an exemplary embodiment of the present disclosure.
  • the device can be implemented as all or a part of the first UE through software, hardware or a combination of both.
  • the device includes:
  • the measuring module 920 is configured to measure the received power of the reference signal sent by the second UE, and generate an SL-RSRP report that has not been filtered by a higher layer;
  • the sending module 940 is configured to send the SL-RSRP report to the second UE, where the SL-RSRP report is used for the second UE to perform transmit power control.
  • Fig. 10 is a block diagram of a transmission power control device for direct communication provided by an exemplary embodiment of the present disclosure.
  • the device can be implemented as all or part of the second UE through software, hardware or a combination of both.
  • the device includes:
  • the sending module 1020 is configured to send a reference signal to the first UE
  • the receiving module 1040 is configured to receive the SL-RSRP report reported by the first UE, where the SL-RSRP in the SL-RSRP report is the SL-RSRP without high-layer filtering;
  • the sending module 1020 is configured to perform transmission power control according to the SL-RSRP report.
  • the device provided in this embodiment sends the SL-RSRP report without high-layer filtering to the second UE through the first UE, so that the second UE can obtain a more accurate SL-RSRP report for each adjusted transmit power.
  • -RSRP report to improve the accuracy of the transmission power control of the transmitting end user equipment during the IoV communication, thereby reducing the interference between various user equipment during IoV communication.
  • FIG. 11 shows a schematic structural diagram of a user equipment (or V2X sending device or V2X receiving device) provided by an exemplary embodiment of the present disclosure.
  • the user equipment includes: a processor 1101, a receiver 1102, a transmitter 1103, and a memory 1104 And bus 1105.
  • the processor 1101 includes one or more processing cores, and the processor 1101 executes various functional applications and information processing by running software programs and modules.
  • the receiver 1102 and the transmitter 1103 may be implemented as a communication component, and the communication component may be a communication chip.
  • the memory 1104 is connected to the processor 1101 through the bus 1105.
  • the memory 1104 may be used to store at least one instruction, and the processor 1101 is used to execute the at least one instruction, so as to implement each step in the foregoing method embodiment.
  • the memory 1104 can be implemented by any type of volatile or non-volatile storage device or a combination thereof.
  • the volatile or non-volatile storage device includes, but is not limited to: magnetic disks or optical disks, electrically erasable and programmable Read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static anytime access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM) .
  • non-transitory computer-readable storage medium including instructions, such as a memory including instructions, which may be executed by a processor of a user equipment to complete the transmission power control method of the direct communication.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.
  • a non-transitory computer-readable storage medium When the instructions in the non-transitory computer storage medium are executed by a processor of a user equipment, the user equipment can execute the above-mentioned direct communication transmission power control method.
  • An exemplary embodiment of the present disclosure further provides a communication system, which includes: the above-mentioned V2X sending device and the above-mentioned V2X receiving device.
  • An exemplary embodiment of the present disclosure also provides a computer-readable storage medium in which at least one instruction, at least one program, code set or instruction set is stored, the at least one instruction, the At least one program, the code set, or the instruction set is loaded and executed by the processor to implement the transmission power control method for direct communication provided by the foregoing method embodiments.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé, un appareil et un dispositif de commande de puissance de transmission pendant des communications par connexion directe, ainsi qu'un support de stockage, relevant du domaine des communications mobiles. Le procédé comprend les étapes au cours desquelles : un premier UE envoie un i-ième rapport SL-RSRP à un second UE ; après une durée T suivant l'envoi du i-ième rapport SL-RSRP, le premier UE redémarre un filtrage de couche supérieure RSRP ; et le premier UE envoie un i+1-ième rapport RSRP au second UE, le i+1-ième rapport SL-RSRP étant utilisé pour permettre au second UE de commander une puissance de transmission. Dans la présente invention, le second UE est activé de façon à obtenir un rapport SL-RSRP relativement précis sur la puissance d'envoi après chaque ajustement, ce qui accroît la précision de la commande de puissance de transmission pendant des communications par l'Internet des véhicules d'un équipement utilisateur à une extrémité d'envoi. L'interférence entre divers équipements utilisateur pendant des communications par l'Internet des véhicules s'en trouve réduite.
PCT/CN2019/094949 2019-07-05 2019-07-05 Procédé, appareil et dispositif de commande de puissance de transmission pendant des communications par connexion directe, et support de stockage WO2021003623A1 (fr)

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PCT/CN2019/094949 WO2021003623A1 (fr) 2019-07-05 2019-07-05 Procédé, appareil et dispositif de commande de puissance de transmission pendant des communications par connexion directe, et support de stockage
CN201980001266.9A CN110463234B (zh) 2019-07-05 2019-07-05 直连通信的发送功率控制方法、装置、设备及存储介质

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CN115053578A (zh) * 2020-02-14 2022-09-13 华为技术有限公司 一种确定路径损耗的方法、装置及系统
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108235797A (zh) * 2017-12-28 2018-06-29 北京小米移动软件有限公司 确定路径损耗的方法及装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3254506B1 (fr) * 2015-02-06 2022-09-28 Samsung Electronics Co., Ltd. Procédé et appareil de transmitter et du soutien de la transmission de signaux dans un système de communication acceptant un schéma de dispositif à dispositif
KR102314442B1 (ko) * 2015-02-06 2021-10-19 삼성전자주식회사 D2d 네트워크에서 ue 디스커버리 방법 및 시스템
US10624049B2 (en) * 2015-02-19 2020-04-14 Telefonaktiebolaget Lm Ericsson (Publ) Measurement of candidates synchronization references by device-to-device user equipment
CN106304257A (zh) * 2015-05-15 2017-01-04 上海贝尔股份有限公司 选择ue到网络的中继的方法和用于中继发现的同步方法
US9974039B2 (en) * 2015-12-21 2018-05-15 Intel IP Corporation User equipment and method for measurement of side-link reference signal received power (S-RSRP)
CN108702244B (zh) * 2016-04-01 2022-04-29 英特尔公司 用于低复杂度设备到设备(d2d)通信的链路适配

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108235797A (zh) * 2017-12-28 2018-06-29 北京小米移动软件有限公司 确定路径损耗的方法及装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
HUAWEI ET AL.: "Sidelink measurements", 3GPP TSG RAN WG1 MEETING #96BIS, R1-1904692, XI'AN, CHINA, APRIL 8-12, 2019, 2 April 2019 (2019-04-02), XP051707285, DOI: 20200306155328Y *

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