WO2021003742A1 - 直连通信的功率控制方法、装置、终端及存储介质 - Google Patents

直连通信的功率控制方法、装置、终端及存储介质 Download PDF

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Publication number
WO2021003742A1
WO2021003742A1 PCT/CN2019/095623 CN2019095623W WO2021003742A1 WO 2021003742 A1 WO2021003742 A1 WO 2021003742A1 CN 2019095623 W CN2019095623 W CN 2019095623W WO 2021003742 A1 WO2021003742 A1 WO 2021003742A1
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Prior art keywords
reference signal
signal
measurement result
threshold value
direct communication
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PCT/CN2019/095623
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English (en)
French (fr)
Inventor
杨星
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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/CN2019/095623 priority Critical patent/WO2021003742A1/zh
Priority to US17/626,473 priority patent/US20220286977A1/en
Priority to CN201980001329.0A priority patent/CN110547000B/zh
Publication of WO2021003742A1 publication Critical patent/WO2021003742A1/zh

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    • 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
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • 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
    • H04W52/38—TPC being performed in particular situations
    • H04W52/383—TPC being performed in particular situations power control in peer-to-peer links
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • 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
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • 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
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present disclosure relates to the field of mobile communication, and in particular to a power control method, device, terminal and storage medium for direct communication.
  • V2X Vehicle to Everything
  • V2V Vehicle to Everything
  • X stands for any object that interacts with the vehicle.
  • X mainly includes vehicles, people, Traffic roadside infrastructure and network.
  • the information modes of V2X interaction include: between vehicle and vehicle (Vehicle to Vehicle, V2V), vehicle to road (Vehicle to Infrastructure, V2I), vehicle to person (Vehicle to Pedestrian, V2P), vehicle to network (Vehicle to Network, V2N) interaction.
  • V2V Vehicle to Vehicle
  • V2I vehicle to Infrastructure
  • V2P vehicle to person
  • V2N vehicle to network
  • a direct connection (Sidelink) method is introduced.
  • the Sidelink communication method realizes addressing through the source identification and target identification of the Media Access Control (MAC) layer. Before transmission, UEs do not need to be connected in advance. Sidelink uses this to satisfy faster and more efficient communication methods.
  • MAC Media Access Control
  • the embodiments of the present disclosure provide a power control method, device, terminal, and storage medium for direct communication, which can be used to solve the problem of inaccurate power control of direct communication caused by the inaccuracy of the path loss of the Sidelink channel.
  • the technical solution is as follows:
  • a power control method for direct communication which is applied to a first UE in V2X, and the method includes:
  • the first UE reports the measurement report of the reference signal to the second UE according to the measurement result of the reference signal, and the measurement report uses For the second UE to perform power control;
  • the change value is used to indicate the change of the measurement result of the reference signal relative to the measurement result reported last time.
  • the reporting the measurement report of the reference signal to the second UE according to the measurement result of the reference signal includes:
  • the first unicast Sidelink RRC message includes: the signal type of the reference signal and the measurement result after high-layer filtering.
  • a power control method for direct communication is provided, which is applied to a second UE in V2X, and the method includes:
  • the second UE performs power control during vehicle networking communication according to the measurement report of the reference signal.
  • the receiving, by the second UE, of the measurement report of the reference signal reported by the first UE includes:
  • the second UE receives a first unicast Sidelink RRC message sent by the first UE, where the first unicast Sidelink RRC message includes: the signal type of the reference signal and the measurement result after high-layer filtering.
  • a power control device for direct communication includes:
  • the receiving module is configured to obtain a measurement result of the reference signal sent by the second UE through measurement
  • the sending module is configured to perform a sending process when the change in the measurement result of the reference signal is greater than the threshold value, and report a measurement report to the second UE, the measurement report being used for the second UE to perform power control;
  • the change value is used to indicate the change of the measurement result of the reference signal relative to the measurement result reported last time.
  • the sending module configured to report the measurement result of the reference signal to the second UE a measurement report of the reference signal, including:
  • the first unicast direct communication radio resource control message includes: the signal type of the reference signal and the measurement result, or the signal type of the reference signal and the measurement result after high layer filtering.
  • a power control device for direct communication includes:
  • a sending module configured to send a reference signal to the first UE
  • a receiving module configured to receive a measurement report of the reference signal reported by the first UE, the measurement report being reported by the first UE when the change value of the measurement result of the reference signal is greater than a threshold value, The change value is used to indicate the change of the measurement result of the reference signal relative to the measurement result reported last time;
  • the processing module is configured to perform power control during vehicle networking communication according to the measurement report of the reference signal.
  • a vehicle networking device in another aspect, and the terminal includes:
  • a transceiver connected to the processor
  • the processor is configured to load and execute executable instructions to implement the power control method for direct communication executed by the first UE.
  • a vehicle networking device in another aspect, and the terminal includes:
  • a transceiver connected to the processor
  • the processor is configured to load and execute executable instructions to implement the power control method for direct communication performed by the second UE.
  • 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 power control method for direct communication as described in the above aspect.
  • the second UE When the change value of the measurement result of the reference signal is greater than the threshold value, the second UE will receive the measurement report of the reference signal reported by the first UE.
  • the change value in the measurement report is used to indicate that the measurement result of the reference signal is relative to the previous report.
  • the second UE When the measurement result changes, the second UE will perform power control during IoV communication based on the measurement report of the reference signal, improve the accuracy of the transmission power control of the second UE (transmitting user equipment) in IoV communication, and reduce the Sidelink channel The impact of the path loss on the communication between user equipment.
  • 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 power control method for direct communication provided by an exemplary embodiment of the present disclosure
  • Fig. 3 shows a flow chart of a power control method for direct communication provided by an exemplary embodiment of the present disclosure
  • FIG. 4 shows a flowchart of a power control method for direct communication provided by an exemplary embodiment of the present disclosure
  • FIG. 5 shows a flowchart of a power control method for direct communication provided by an exemplary embodiment of the present disclosure
  • Fig. 6 shows a flowchart of a power control method for direct communication provided by an exemplary embodiment of the present disclosure
  • FIG. 7 shows a schematic structural diagram of a power control device for direct communication provided by an exemplary embodiment of the present disclosure
  • FIG. 8 shows a schematic structural diagram of a power control device for direct communication provided by an exemplary embodiment of the present disclosure
  • Fig. 9 is a schematic structural diagram of a car networking device provided by an 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 equipment (User Equipment, UE) in the 5G core network are connected through a PC-5 interface.
  • the Sidelink connection mode is introduced. Because Sidelink transmission is addressed through the source identification and target identification of the media access control layer, when the Sidelink connection mode is used, the UE and the UE do not need to establish a connection in advance before transmission.
  • the UE used to transmit the signal adjusts the transmit power of the Sidelink signal according to the measurement result of the Sidelink channel.
  • QoS quality of service
  • Pe is the transmit power
  • P 0 is the transmit power base
  • ⁇ is the adjustment step size
  • Pathloss is the Sidelink channel loss.
  • the Sidelink power control function is introduced in the Sidelink connection.
  • the path loss of the Sidelink channel will vary with multiple reasons such as the distance between the UEs, the filtering method, or the information propagation medium.
  • the compensation mechanism of the path loss refer to the following embodiments as an example.
  • FIG. 2 shows a flowchart of a power control method for 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 measures and obtains the measurement result of the reference signal sent by the second UE.
  • the first UE is user equipment at the receiving end, and the second UE is user equipment at the transmitting end.
  • the first UE receives the reference signal sent by the second UE and performs measurement, and the signal type of the reference signal may be at least one of SLSS, SideLink CSI-RS, and DMRS.
  • the first UE will periodically receive the reference signal sent by the second UE and perform measurement.
  • the measurement result of the reference signal includes but is not limited to: at least one of the received power of the reference signal, the signal-to-noise ratio of the reference signal, and the signal-to-interference and noise ratio of the reference signal.
  • the measurement result of the reference signal is the received power of the reference signal as an example.
  • Step 202 When the change value of the measurement result of the reference signal is greater than the threshold value, the first UE reports the measurement report of the reference signal to the second UE according to the measurement result of the reference signal, and the measurement report is used for the second UE to perform power control.
  • the first UE After the first UE obtains the measurement result of the reference signal in this measurement, it compares the measurement result of the reference signal obtained in this measurement with the measurement result reported last time to obtain a change value.
  • the first UE reports the measurement report of the reference signal to the second UE according to the measurement result of the reference signal.
  • the measurement report at least carries the measurement result of the reference signal.
  • the first UE sends a first unicast direct communication radio resource control message to the second UE, where the first unicast direct communication radio resource control message includes: the signal type of the reference signal and the measurement after high-level filtering result.
  • the measurement report also carries at least one of the signal type of the reference signal and the threshold value.
  • the method provided in this embodiment reports the measurement report of the reference signal to the second UE according to the measurement result of the reference signal by the first UE when the change value of the measurement result of the reference signal is greater than the threshold value.
  • the second UE Used for the second UE to perform power control, so that the second UE can perform power control during IoV communication according to the measurement report of the reference signal, and improve the transmission power control of the second UE (transmitting user equipment) during IoV communication Accuracy, reducing the impact of Sidelink channel path loss on communication between user equipment.
  • Fig. 3 shows a flowchart of a power control method for 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 sends a reference signal to the first UE.
  • the signal type of the reference signal may be at least one of SLSS, SideLink CSI-RS, and DMRS.
  • Step 302 The second UE receives the measurement report of the reference signal reported by the first UE.
  • the measurement report is reported by the first UE when the change value of the measurement result of the reference signal is greater than the threshold value.
  • the change value is used to indicate the measurement of the reference signal.
  • the result is the change from the last reported measurement result.
  • the second UE receives the first unicast SideLink RRC message sent by the first UE, and the first unicast SideLink RRC message includes: the signal type of the reference signal and the measurement result after high-layer filtering.
  • Step 303 The second UE performs power control during the Internet of Vehicles communication according to the measurement report of the reference signal.
  • the second UE sends the reference signal to the first UE, the second UE receives the measurement report of the reference signal reported by the first UE, and the second UE performs the vehicle operation based on the measurement report of the reference signal.
  • the power control during networked communication enables the second UE to perform power control during IoV communication according to the measurement report of the reference signal, and improves the accuracy of the transmission power control of the second UE (transmitting user equipment) during IoV communication. Reduce the impact of Sidelink channel path loss on communication between user equipment.
  • Fig. 4 is a flowchart of a 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 configures the signal type and threshold of the reference signal to be measured to the first UE.
  • the second UE configures the signal type and threshold of the reference signal to be measured to the first UE.
  • the signal type of the reference signal is at least one of SLSS, SideLink CSI-RS, and DMRS.
  • the second UE configures the signal type and threshold of the reference signal to be measured to the first UE.
  • the second UE configures the first UE with the signal type of the reference signal to be measured as DMRS, and the threshold is 3db.
  • the second UE sends a second unicast SideLink RRC message to the first UE, and the second unicast SideLink RRC message includes the signal type and threshold of the reference signal to be measured.
  • Step 402 The first UE receives the signal type and threshold value of the reference signal to be measured configured by the second UE.
  • the first UE receives a second unicast SideLink RRC message sent by the second UE, and the second unicast SideLink RRC message includes: the signal type and threshold of the reference signal to be measured.
  • step 401 and step 402 can also be performed in reverse, that is, the signal type and threshold value of the reference signal to be measured are configured by the first UE to the second UE, which is not described in this embodiment. limited.
  • Step 403 The second UE sends a reference signal to the first UE.
  • the second UE sends the reference signal to the first UE according to the configured signal type of the reference signal.
  • Step 404 The first UE measures and obtains the measurement result of the reference signal sent by the second UE.
  • the first UE will periodically receive the reference signal sent by the second UE and perform measurement.
  • the measurement result of the reference signal includes but is not limited to: at least one of the received power of the reference signal, the signal-to-noise ratio of the reference signal, and the signal-to-interference and noise ratio of the reference signal.
  • the measurement result of the reference signal is the received power of the reference signal as an example.
  • the first UE may also perform high-level filtering on the measurement result of the reference signal.
  • the received power of the reference signal Take the received power of the reference signal as an example:
  • the upper layer (L3 layer) of the first UE uses the following formula to filter the measurement results:
  • M n is the most recent measurement result
  • F n-1 is the filtered measurement result before the update
  • F n is the filtered measurement result after the update
  • a 1/2 (ki/4)
  • k i is the configuration value.
  • Step 405 When the change value of the measurement result of the reference signal is greater than the threshold value, report the measurement report of the reference signal to the second UE according to the measurement result of the reference signal.
  • Step 406 The second UE receives the measurement report of the reference signal reported by the first UE.
  • the second UE When the change value of the measurement result of the reference signal is greater than the threshold, the second UE will receive the measurement report of the reference signal reported by the first UE.
  • the measurement report of the reference signal includes: the measurement result of the reference signal.
  • the measurement report of the reference signal also includes: the signal type of the reference signal.
  • Step 407 The second UE performs power control according to the measurement report.
  • the second UE determines the path loss according to the difference between the transmission power and the received power of the reference signal; the second UE determines the transmission power in the vehicle networking communication according to the path loss.
  • the transmission power of the reference signal is the transmission power used in step 403.
  • the method provided in this embodiment sends the reference signal to the first UE after the second UE configures the threshold value and the reference signal type, and the first UE performs processing on subsequent signals of the second UE according to the reference signal.
  • the second UE configures the reference signal type and threshold value, and the second UE can select the reference signal type and threshold value by itself, which meets the requirement that the second UE dynamically uses the Sidelink control method according to its own performance and requirements. purpose. For example, when you want to adjust the transmission power frequently, configure a relatively small threshold; when you want to adjust the transmission power at a lower frequency, configure a relatively large threshold.
  • the steps performed by the first UE in the above embodiments can be separately implemented as the 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. Power control method.
  • Fig. 5 is a flowchart of a 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 501 The access network device configures the signal type and threshold of the reference signal to the first UE.
  • the access network device configures the signal type and threshold value of the reference signal to be measured to the first UE.
  • the access network device sends broadcast signaling, which carries the signal type and threshold value of the reference signal to be measured; or, the access network device sends dedicated signaling, in which the dedicated signaling Carry the signal type and threshold of the reference signal to be measured.
  • the dedicated signaling is control signaling sent only to the first UE.
  • Step 502 The first UE receives the signal type and threshold value of the reference signal to be measured configured by the access network device.
  • the first UE receives broadcast signaling or dedicated signaling sent by the access network device, where the broadcast signaling or dedicated signaling carries: the signal type and threshold of the reference signal to be measured.
  • the access network device may also configure the signal type and threshold value of the reference signal to the second UE, and the second UE receives the signal type and threshold value of the reference signal to be measured configured by the access network device.
  • Step 503 The second UE sends a reference signal to the first UE.
  • the second UE sends the reference signal to the first UE according to the configured signal type of the reference signal.
  • Step 504 The first UE measures the measurement result of the reference signal sent by the second UE.
  • the first UE will periodically receive the reference signal sent by the second UE and perform measurement.
  • the measurement result of the reference signal includes but is not limited to: at least one of the received power of the reference signal, the signal-to-noise ratio of the reference signal, and the signal-to-interference and noise ratio of the reference signal.
  • the measurement result of the reference signal is the received power of the reference signal as an example.
  • the first UE may also perform high-level filtering on the measurement result of the reference signal.
  • the received power of the reference signal Take the received power of the reference signal as an example:
  • the upper layer (L3 layer) of the first UE uses the following formula to filter the measurement results:
  • M n is the most recent measurement result
  • F n-1 is the filtered measurement result before the update
  • F n is the filtered measurement result after the update
  • a 1/2 (ki/4)
  • k i is the configuration value.
  • Step 505 When the change value of the measurement result of the reference signal is greater than the threshold value, the first UE reports the measurement report of the reference signal to the second UE according to the measurement result of the reference signal.
  • Step 506 The second UE receives the measurement report of the reference signal reported by the first UE.
  • the second UE When the change value of the measurement result of the reference signal is greater than the threshold, the second UE will receive the measurement report of the reference signal reported by the first UE.
  • the measurement report of the reference signal includes: the measurement result of the reference signal.
  • the measurement report of the reference signal also includes: the signal type of the reference signal.
  • Step 507 The second UE performs power control according to the measurement report.
  • the second UE determines the path loss according to the difference between the transmission power and the received power of the reference signal; the second UE determines the transmission power in the vehicle networking communication according to the path loss.
  • the second UE sends the reference signal to the first UE after the threshold value and the reference signal type are configured by the access network device.
  • the access network equipment configures the threshold value and reference signal type.
  • Large-scale channel configuration can be done through broadcast signaling, or specific UE can be configured through dedicated signaling, which satisfies operators Level of use needs.
  • Fig. 6 is a flowchart of a 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 601 The access network device configures the second reference signal type and the second threshold value of the reference signal to the first UE.
  • the access network device configures the second reference signal type and the second threshold value of the reference signal to be measured to the first UE.
  • the access network device sends broadcast signaling, which carries the second reference signal type and the second threshold of the reference signal to be measured; or, the access network device sends dedicated signaling,
  • the dedicated signaling carries the second reference signal type and the second threshold value of the reference signal to be measured.
  • the dedicated signaling is control signaling sent only to the first UE.
  • the first UE receives the second reference signal type and the second threshold value of the reference signal to be measured configured by the access network device.
  • the first UE receives broadcast signaling or dedicated signaling sent by the access network device, where the broadcast signaling or dedicated signaling carries: the second reference signal type and the second threshold of the reference signal to be measured.
  • the access network device may also configure the second reference signal type and second threshold value of the reference signal to the second UE, and the second UE receives the second reference signal to be measured configured by the access network device.
  • Reference signal type and second threshold may also configure the second reference signal type and second threshold value of the reference signal to the second UE, and the second UE receives the second reference signal to be measured configured by the access network device.
  • Step 602 The second UE configures the first signal type and the first threshold value of the reference signal to the first UE.
  • the second UE sends a second unicast SideLink RRC message to the first UE, and the second unicast SideLink RRC message includes: the first signal type and the first threshold value of the reference signal to be measured.
  • the first UE receives the first signal type and the first threshold value of the reference signal to be measured configured by the second UE.
  • the first UE receives a second unicast SideLink RRC message sent by the second UE, where the second unicast SideLink RRC message includes: the first signal type and the first threshold value of the reference signal to be measured.
  • step 602 can also be performed in reverse, that is, the first UE configures the first signal type and the first threshold value of the reference signal to be measured to the second UE, which is not in this embodiment. Be qualified.
  • Step 603 The first UE selects the first reference type and the first threshold value as the signal type and threshold value of the reference signal to be measured.
  • the first UE selects the first signal type and the first threshold configured (or selected) by the UE as the reference signal to be measured Signal type and threshold.
  • Step 604 The second UE sends a reference signal to the first UE.
  • the second UE sends the reference signal to the first UE according to the first signal type of the configured reference signal.
  • Step 605 The first UE measures the measurement result of the reference signal sent by the second UE.
  • the first UE will periodically receive the reference signal sent by the second UE and perform measurement.
  • the measurement result of the reference signal includes but is not limited to: at least one of the received power of the reference signal, the signal-to-noise ratio of the reference signal, and the signal-to-interference and noise ratio of the reference signal.
  • the measurement result of the reference signal is the received power of the reference signal as an example.
  • the first UE may also perform high-level filtering on the measurement result of the reference signal.
  • the received power of the reference signal Take the received power of the reference signal as an example:
  • the upper layer (L3 layer) of the first UE uses the following formula to filter the measurement results:
  • M n is the most recent measurement result
  • F n-1 is the filtered measurement result before the update
  • F n is the filtered measurement result after the update
  • a 1/2 (ki/4)
  • k i is the configuration value.
  • Step 606 When the change value of the measurement result of the reference signal is greater than the first threshold value, the first UE reports the measurement report of the reference signal to the second UE according to the measurement result of the reference signal.
  • the second UE When the change value of the measurement result of the reference signal is greater than the first threshold value, the second UE will receive the measurement report of the reference signal reported by the first UE.
  • the measurement report of the reference signal includes: the measurement result of the reference signal.
  • the measurement report of the reference signal also includes: the signal type of the reference signal.
  • Step 607 The second UE receives the measurement report of the reference signal reported by the first UE.
  • the second UE When the change value of the measurement result of the reference signal is greater than the threshold value, the second UE will receive the measurement report of the reference signal reported by the first UE.
  • the measurement report contains the measurement result exceeding the change value and the signal type of the measurement result .
  • Step 608 The second UE performs power control according to the measurement report.
  • the second UE determines the path loss according to the difference between the transmission power and the received power of the reference signal; the second UE determines the transmission power in the vehicle networking communication according to the path loss.
  • the first UE preferentially selects the signal type and reference signal type configured by the UE.
  • the threshold value can give priority to ensuring fast communication between UEs.
  • Fig. 7 is a block diagram of a 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: a receiving module 701, a processing module 702, and a sending module 703.
  • the receiving module 701 is configured to obtain a measurement result of the reference signal sent by the second UE.
  • the sending module 703 is configured to report the measurement report of the reference signal to the second UE according to the measurement result of the reference signal when the change value of the measurement result of the reference signal is greater than the threshold value, and the measurement report is used for the second UE to perform Power Control.
  • the sending module 703 is configured to send the first unicast direct communication radio to the second UE when the change in the measurement result of the reference signal is greater than the threshold value.
  • the first unicast direct communication radio resource control message includes: the signal type of the reference signal and the measurement result after high-layer filtering.
  • the receiving module 701 is configured to receive the signal type and the threshold value of the reference signal to be measured configured by the second UE.
  • the receiving module 701 is configured to receive a second unicast direct communication resource control message sent by the second UE, and the second unicast direct communication radio resource control message Including: the signal type of the reference signal to be measured and the threshold value.
  • the receiving module 701 is configured to receive the signal type of the reference signal to be measured and the threshold value configured by the access network device.
  • the receiving module 701 is configured to receive broadcast signaling sent by the access network device, where the broadcast signaling includes: the signal type of the reference signal to be measured and the signal The threshold; or, the receiving module 701 is configured to receive dedicated signaling sent by an access network device, where the dedicated signaling includes: the signal type of the reference signal to be measured and the threshold Limit.
  • the device further includes:
  • the receiving module 701 is configured to receive the first signal type and the first threshold value of the reference signal configured by the second UE;
  • the receiving module 701 is configured to receive the second signal type and the second threshold value of the reference signal configured by the access network device;
  • the processing module 703 is configured to determine the first signal type and the first threshold value as the signal type and threshold value of the reference signal to be measured.
  • the signal type of the reference signal includes at least one of the following types:
  • Fig. 8 is a block diagram of a 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 801 is configured to send a reference signal to the first UE
  • the receiving module 802 is configured to receive the measurement report of the reference signal reported by the first UE.
  • the measurement report is reported by the first UE when the change value of the measurement result of the reference signal is greater than the threshold value, and the change value is used to indicate the reference signal The change of the measurement result from the last reported measurement result;
  • the processing module 803 is configured to perform power control in vehicle networking communication according to the measurement report of the reference signal.
  • the receiving module 802 is configured to receive a first unicast direct communication radio resource control message sent by the first UE, and the first unicast direct communication radio resource control message The message includes: the signal type of the reference signal and the measurement result after high-level filtering.
  • the processing module 803 is configured to configure the signal type of the reference signal to be measured and the threshold value to the first UE.
  • the sending module 801 is configured to send a second unicast direct communication resource control message to the first UE, and the second unicast direct communication radio resource control message includes : The signal type of the reference signal to be measured and the threshold value.
  • the signal type of the reference signal includes at least one of the following types:
  • FIG. 9 shows a schematic structural diagram of a car networking device (or V2X sending terminal, V2X receiving terminal) provided by an exemplary embodiment of the present disclosure, and the car networking device includes:
  • the processor 901 includes one or more processing cores, and the processor 901 executes various functional applications and information processing by running software programs and modules.
  • the receiver 902 and the transmitter 903 may be implemented as a communication component, and the communication component may be a communication chip.
  • the memory 904 is connected to the processor 901 through the bus 905.
  • the memory 904 may be used to store at least one instruction, and the processor 901 is used to execute the at least one instruction to implement each step in the foregoing method embodiment.
  • 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 power control method for direct communication provided by the foregoing method embodiments.

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Abstract

一种直连通信的功率控制方法、装置、终端及存储介质，涉及通信领域。该方法包括：第一UE测量第二UE发送的参考信号得到测量结果；第一UE在参考信号的测量结果的变化值大于门限值时，根据参考信号的测量结果向第二UE上报参考信号的测量报告，测量报告用于供第二UE进行功率控制。

Description

直连通信的功率控制方法、装置、终端及存储介质 技术领域
本公开涉及移动通信领域，特别涉及一种直连通信的功率控制方法、装置、终端及存储介质。
背景技术
车用无线通信技术(Vehicle to Everything,V2X)是将车辆与一切事物相连接的新一代信息通信技术，其中V代表车辆，X代表任何与车交互信息的对象，当前X主要包含车、人、交通路侧基础设施和网络。V2X交互的信息模式包括：车与车之间(Vehicle to Vehicle,V2V)、车与路之间(Vehicle to Infrastructure,V2I)、车与人之间(Vehicle to Pedestrian,V2P)、车与网络之间(Vehicle to Network,V2N)的交互。为了满足车与多种对象中的交互，特别是两个用户设备(User Equipment，UE)之间的直接通信，引入了直连通信(Sidelink)方式。Sidelink通信方式通过媒体接入控制层(Media Access Control，MAC)的源标识和目标标识来实现寻址。在传输之前，UE之间不需要预先连接。Sidelink以此来满足更加快捷且高效的通信方式。
发明内容
本公开实施例提供一种直连通信的功率控制方法、装置、终端及存储介质，可以用于解决因Sidelink信道的路损情况无法及时得到，而造成的直连通信的功率控制不准确的问题。所述技术方案如下：
根据本公开实施例的一个方面，提供了一种直连通讯的功率控制方法，应用于V2X中的第一UE中，所述方法包括：
所述第一UE测量第二UE发送的参考信号的测量结果；
所述第一UE在所述参考信号的测量结果的变化值大于门限值时，根据所述参考信号的测量结果向所述第二UE上报所述参考信号的测量报告，所述测量报告用于供所述第二UE进行功率控制；
其中，所述变化值用于指示所述参考信号的测量结果相对于上一次上报的 测量结果的变化。
在一个可选的实施例中，所述根据所述参考信号的测量结果向所述第二UE上报所述参考信号的测量报告，包括：
向所述第二UE发送第一单播直连通信无线资源控制(Sidelink Radio Resource Control，Sidelink RRC)消息；
其中，所述第一单播Sidelink RRC消息包括：所述参考信号的信号类型和高层滤波后的所述测量结果。
另一方面，提供了一种直连通讯的功率控制方法，应用于V2X中的第二UE中，所述方法包括：
所述第二UE向第一UE发送参考信号；
所述第二UE接收所述第一UE上报的所述参考信号的测量报告，所述测量报告是所述第一UE在所述参考信号的测量结果的变化值大于门限值时上报的，所述变化值用于指示所述参考信号的测量结果相对于上一次上报的测量结果的变化；
所述第二UE根据所述参考信号的测量报告进行车联网通信时的功率控制。
其中，所述第二UE接收所述第一UE上报的所述参考信号的测量报告，包括：
所述第二UE接收所述第一UE发送的第一单播Sidelink RRC消息，所述第一单播Sidelink RRC消息包括：所述参考信号的信号类型和高层滤波后的所述测量结果。
另一方面，提供了一种直连通信的功率控制装置，所述装置包括：
接收模块，被配置为测量得到第二UE发送的参考信号的测量结果；
发送模块，被配置为在所述参考信号的测量结果变化大于所述门限值时执行发送过程，向所述第二UE上报测量报告，所述测量报告用于供所述第二UE进行功率控制；
其中，所述变化值用于指示所述参考信号的测量结果相对于上一次上报的测量结果的变化。
所述发送模块，被配置为对所述参考信号的测量结果向所述第二UE上报所述参考信号的测量报告，包括：
向所述第二UE发送第一单波直连通信无线资源控制消息；
其中，所述第一单播直连通信无线资源控制消息包括：所述参考信号的信 号类型和所述测量结果，或，所述参考信号的信号类型和高层滤波后的所述测量结果。
另一方面，提供了一种直连通信的功率控制装置，所述装置包括：
发送模块，被配置为向第一UE发送参考信号；
接收模块，被配置接收所述第一UE上报的所述参考信号的测量报告，所述测量报告是所述第一UE在所述参考信号的测量结果的变化值大于门限值时上报的，所述变化值用于指示所述参考信号的测量结果相对于上一次上报的测量结果的变化；
处理模块，被配置为根据所述参考信号的测量报告进行车联网通信时的功率控制。
另一方面，提供了一种车联网设备，所述终端包括：
处理器；
与所述处理器相连的收发器；
其中，所述处理器被配置为加载并执行可执行指令以实现由第一UE执行的直连通信的功率控制方法。
另一方面，提供了一种车联网设备，所述终端包括：
处理器；
与所述处理器相连的收发器；
其中，所述处理器被配置为加载并执行可执行指令以实现由第二UE执行的直连通信的功率控制方法。
另一方面，提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或所述指令集由处理器加载并执行以实现如上方面所述的直连通信的功率控制方法。
本公开实施例提供的技术方案带来的有益效果至少包括：
在参考信号的测量结果的变化值大于门限值时，第二UE会接收到第一UE上报的参考信号的测量报告，测量报告中的变化值用于指示参考信号的测量结果相对上一次上报测量结果的变化，第二UE会根据参考信号的测量报告进行车联网通信时的功率控制，提高第二UE(发送端用户设备)在车联网通信时的发送功率控制的准确性，降低Sidelink信道的路损对于用户设备之间通信的影响。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出了本公开一个示例性实施例提供的通信系统的框图；
图2示出了本公开一个示例性实施例提供的直连通信的功率控制方法的流程图；
图3示出了本公开一个示例性实施例提供的直连通信的功率控制方法的流程图；
图4示出了本公开一个示例性实施例提供的直连通信的功率控制方法的流程图；
图5示出了本公开一个示例性实施例提供的直连通信的功率控制方法的流程图；
图6示出了本公开一个示例性实施例提供的直连通信的功率控制方法的流程图；
图7示出了本公开一个示例性实施例提供的直连通信的功率控制装置的结构示意图；
图8示出了本公开一个示例性实施例提供的直连通信的功率控制装置的结构示意图；
图9是本公开一个示例性实施例提供的车联网设备的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本公开相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本公开的一些方面相一致的装置和方法的例子。
本申请实施例描述的通信系统以及业务场景是为了更加清楚地说明本申请实施例的技术方案，并不构成对本申请实施例提供的技术方案的限定，本领域 普通技术人员可知，随着通信系统的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
图1示出了本公开一个示例性实施例提供的通信系统的框图。该通信系统可以是非漫游5G系统构架(Non-roaming 5G system architecture)的示意图，该系统构架可以应用于使用D2D技术的车联网(Vehicle to everything，V2X)业务。
该系统架构包括数据网络(Data Network，DN)，该数据网络中设置有V2X业务所需的V2X应用服务器(Application Server)。该系统构架还包括5G核心网，5G核心网的网络功能包括：统一数据管理(Unified Data Management，UDM)、策略控制功能(Policy Control Function，PCF)、网络开放功能(Network Exposure Function，NEF)、应用功能(Application Function，AF)、统一数据存储(Unified Data Repository，UDR)、接入和移动性管理功能(Access and Mobility Management Function，AMF)、会话管理功能(Session Management Function，SMF)以及用户面功能(User Plane Function，UPF)。
该系统构架还包括：无线接入网(New Generation-Radio Access Network，NG-RAN)以及示例性示出的4个用户设备(即用户设备1至用户设备4)，其中，每个用户设备均设置有V2X应用(Application)。无线接入网中设置有一个或多个接入网设备，比如基站(gNB)。
该系统构架中，数据网络与5G核心网中的用户设备(User Equipment，UE)之间通过PC-5接口连接。为了支持UE与UE间的直接通信，引入了Sidelink连接方式。因为Sidelink的传输通过媒体接入控制层的源标识和目标标识来实现寻址，所以通过Sidelink连接方式时，UE与UE之间在传输之前不需要提前建立连接。
目前，在第五代移动通信技术(5th-Generation，5G)中，针对直连通信的单播业务，为了在Sidelink通信传输时满足单播发送数据的服务质量(Quality of Service，QoS)要求，引入Sidelink的功率控制功能。用以发送信号的UE会根据Sidelink信道测量结果，调整Sidelink信号的发送功率。相关公式为：
P e＝P 0+αPathloss。
其中Pe为发射功率，P 0为发射功率基数，α为调整步长，Pathloss为Sidelink信道路损。
上述相关技术中，Sidelink信道的路损情况无法被及时且准确地得到，使得 直连通信的功率控制变得不准确。
为了可以支持增强的V2X业务，即支持更高的传输速率和更高的可靠性，需要在Sidelink上建立单播连接。为了保证单波发送数据的QoS要求，Sidelink功率控制功能在Sidelink连接中被引入。在Sidelink功率控制功能中，Sidelink信道的路径损耗会跟随UE之间距离，滤波方式或信息传播介质等多个原因变化，对于路径损耗的补偿机制示例性的参考如下实施例。
图2示出了本公开一个示例性实施例提供的直连通信的功率控制方法的流程图。该方法可以由V2X中的第一UE(比如图1中的UE1)来执行，该方法包括：
步骤201，第一UE测量得到第二UE发送的参考信号的测量结果。
第一UE是接收端用户设备，第二UE是发送端用户设备。
第一UE接收第二UE发送的参考信号并进行测量，参考信号的信号类型可以是SLSS、SideLink CSI-RS，DMRS中的至少一种。
第一UE会周期性地接收第二UE发送的参考信号并进行测量。
参考信号的测量结果包括但不限于：参考信号的接收功率、参考信号的信噪比、参考信号的信干噪比中的至少一种。本实施例，以参考信号的测量结果是参考信号的接收功率来举例说明。
步骤202，第一UE在参考信号的测量结果的变化值大于门限值时，根据参考信号的测量结果向第二UE上报参考信号的测量报告，测量报告用于供第二UE进行功率控制。
第一UE在本次测量得到参考信号的测量结果后，将本次测量得到的参考信号的测量结果与上一次上报的测量结果进行比较，得到变化值。
当该变化值大于门限值时，第一UE根据参考信号的测量结果向第二UE上报参考信号的测量报告。该测量报告中至少携带有参考信号的测量结果。
示例性的，第一UE向第二UE发送第一单播直连通信无线资源控制消息，其中，第一单播直连通信无线资源控制消息包括：参考信号的信号类型和高层滤波后的测量结果。
可选地，该测量报告中还携带有参考信号的信号类型，以及门限值中的至少一种。
综上所述，本实施例提供的方法，通过第一UE在参考信号的测量结果的变化值大于门限值时，根据参考信号的测量结果向第二UE上报参考信号的测量报告，测量报告用于供第二UE进行功率控制，使得第二UE能够根据参考信号的测量报告进行车联网通信时的功率控制，提高第二UE(发送端用户设备)在车联网通信时的发送功率控制的准确性，降低Sidelink信道的路损对于用户设备之间通信的影响。
图3示出了本公开一个示例性实施例提供的直连通信的功率控制方法的流程图。该方法可以由V2X中的第二UE(比如图1中的UE2)来执行，该方法包括：
步骤301，第二UE向第一UE发送参考信号。
参考信号的信号类型可以是SLSS、SideLink CSI-RS，DMRS中的至少一种。
步骤302，第二UE接收第一UE上报的参考信号的测量报告，测量报告是第一UE在参考信号的测量结果的变化值大于门限值时上报的，变化值用于指示参考信号的测量结果相对于上一次上报的测量结果的变化。
示例性的，第二UE接收第一UE发送的第一单播SideLink RRC消息，第一单播SideLink RRC消息包括：参考信号的信号类型和高层滤波后的测量结果。
步骤303，第二UE根据参考信号的测量报告进行车联网通信时的功率控制。
综上所述，本实施例提供的方法，通过第二UE向第一UE发送参考信号，第二UE接收第一UE上报的参考信号的测量报告，第二UE根据参考信号的测量报告进行车联网通信时的功率控制，使得第二UE能够根据参考信号的测量报告进行车联网通信时的功率控制，提高第二UE(发送端用户设备)在车联网通信时的发送功率控制的准确性，降低Sidelink信道的路损对于用户设备之间通信的影响。
图4是根据本公开的一个示例性实施例提供的直连通信的功率控制方法的流程图。该方法可以由V2X中的第一UE和第二UE(比如图1中的UE1和UE2)来执行，该方法包括：
步骤401，第二UE向第一UE配置待测量的参考信号的信号类型与门限值。
第二UE向第一UE配置待测量的参考信号的信号类型和门限值。
示例性的，参考信号的信号类型是SLSS、SideLink CSI-RS，DMRS中的至 少一种。第二UE向第一UE配置需要测量的参考信号的信号类型与门限值。
比如，第二UE向第一UE配置需要测量的参考信号的信号类型为DMRS，门限值为3db。
示例性的，第二UE向第一UE发送第二单播SideLink RRC消息，第二单播SideLink RRC消息包括：待测量的参考信号的信号类型和门限值。
步骤402，第一UE接收第二UE配置待测量的参考信号的信号类型与门限值。
示例性的，第一UE接收第二UE发送的第二单播SideLink RRC消息，该第二单播SideLink RRC消息包括：待测量的参考信号的信号类型和门限值。
需要说明的是，步骤401和步骤402的配置过程也可以反向执行，也即由第一UE向第二UE配置待测量的参考信号的信号类型与门限值，本实施例对此不加以限定。
步骤403，第二UE向第一UE发送参考信号。
第二UE根据配置的参考信号的信号类型，向第一UE发送参考信号。
步骤404，第一UE测量得到第二UE发送的参考信号的测量结果。
第一UE会周期性地接收第二UE发送的参考信号并进行测量。
参考信号的测量结果包括但不限于：参考信号的接收功率、参考信号的信噪比、参考信号的信干噪比中的至少一种。本实施例，以参考信号的测量结果是参考信号的接收功率来举例说明。
可选地，第一UE还会对参考信号的测量结果进行高层滤波。以测量结果是参考信号的接收功率为例：
第一UE的高层(L3层)采用如下公式过滤测量结果：
F n＝(1-a)*F n-1+a*M n；
其中，M n是最近一次的测量结果，F n-1为更新之前的过滤测量结果，F n为更新之后的过滤测量结果，a＝1/2 (ki/4)，k i为配置值。
步骤405，在参考信号的测量结果的变化值大于门限值时，根据参考信号的测量结果向第二UE上报参考信号的测量报告。
步骤406，第二UE接收第一UE上报的参考信号的测量报告。
当参考信号的测量结果的变化值大于门限值时，第二UE即会接收到第一UE上报的参考信号的测量报告。示例性的，参考信号的测量报告中包括：参考信号的测量结果，可选地，参考信号的测量报告中还包括：参考信号的信号类 型。
步骤407，第二UE根据测量报告进行功率控制。
第二UE根据参考信号的发送功率和接收功率之差，确定出路径损失；第二UE根据路径损失确定出车联网通信时的发送功率。
其中，参考信号的发送功率是步骤403中使用的发送功率。
综上所述，本实施例提供的方法，通过在第二UE进行门限值与参考信号类型配置之后将参考信号发送给第一UE，第一UE根据参考信号对第二UE的后续信号进行实时监测，并在变化值超出门限值时发送反馈消息，使得路径损耗的补偿。另外，由第二UE进行参考信号类型与门限值的配置，可以由第二UE自行选择参考信号类型与门限值，满足了第二UE根据自身的性能和需求来动态使用Sidelink控制方式的目的。比如，当希望频繁调节发送功率时，配置相对较小的门限值；当希望较低频率低调节发送功率时，配置相对较大的门限值。
上述实施例中由第一UE执行的步骤，可以单独实现成为第一UE侧的直连通信的功率控制方法；由第二UE执行的步骤，可以单独实现成为第二UE侧的直连通信的功率控制方法。
图5是根据本公开的一个示例性实施例提供的直连通信的功率控制方法的流程图。该方法可以由V2X中的第一UE和第二UE(比如图1中的UE1和UE2)来执行，该方法包括：
步骤501，接入网设备向第一UE配置参考信号的信号类型与门限值。
接入网设备向第一UE配置待测量的参考信号的信号类型和门限值。
可选地，接入网设备发送广播信令，该广播信令中携带有待测量的参考信号的信号类型和门限值；或者，接入网设备发送专有信令，该专有信令中携带有待测量的参考信号的信号类型和门限值。专有信令是仅发送给第一UE的控制信令。
步骤502，第一UE接收接入网设备配置的待测量的参考信号的信号类型和门限值。
第一UE接收接入网设备发送的广播信令或专有信令，该广播信令或专有信令中携带有：待测量的参考信号的信号类型和门限值。
需要说明的是，接入网设备还可以向第二UE配置参考信号的信号类型与门限值，由第二UE接收接入网设备配置的待测量的参考信号的信号类型和门限 值。
步骤503，第二UE向第一UE发送参考信号。
第二UE根据配置的参考信号的信号类型，向第一UE发送参考信号。
步骤504，第一UE测量第二UE发送的参考信号的测量结果。
第一UE会周期性地接收第二UE发送的参考信号并进行测量。
参考信号的测量结果包括但不限于：参考信号的接收功率、参考信号的信噪比、参考信号的信干噪比中的至少一种。本实施例，以参考信号的测量结果是参考信号的接收功率来举例说明。
可选地，第一UE还会对参考信号的测量结果进行高层滤波。以测量结果是参考信号的接收功率为例：
第一UE的高层(L3层)采用如下公式过滤测量结果：
F n＝(1-a)*F n-1+a*M n；
其中，M n是最近一次的测量结果，F n-1为更新之前的过滤测量结果，F n为更新之后的过滤测量结果，a＝1/2 (ki/4)，k i为配置值。
步骤505，第一UE在参考信号的测量结果的变化值大于门限值时，根据参考信号的测量结果向第二UE上报参考信号的测量报告。
步骤506，第二UE接收第一UE上报的参考信号的测量报告。
当参考信号的测量结果的变化值大于门限值时，第二UE即会接收到第一UE上报的参考信号的测量报告。示例性的，参考信号的测量报告中包括：参考信号的测量结果，可选地，参考信号的测量报告中还包括：参考信号的信号类型。
步骤507，第二UE根据测量报告进行功率控制。
第二UE根据参考信号的发送功率和接收功率之差，确定出路径损失；第二UE根据路径损失确定出车联网通信时的发送功率。
综上所述，本实施例提供的方法，通过在接入网设备进行门限值与参考信号类型配置之后，由第二UE将参考信号发送给第一UE。由接入网设备进行门限值与参考信号类型的配置，可以通过广播信令的方式进行大规模的信道配置，或是通过专有信令的方式对特定的UE进行配置，满足了运营商层面的使用需求。
图6是根据本公开的一个示例性实施例提供的直连通信的功率控制方法的 流程图。该方法可以由V2X中的第一UE和第二UE(比如图1中的UE1和UE2)来执行，该方法包括：
步骤601，接入网设备向第一UE配置参考信号的第二参考信号类型与第二门限值。
接入网设备向第一UE配置待测量的参考信号的第二参考信号类型与第二门限值。
可选地，接入网设备发送广播信令，该广播信令中携带有待测量的参考信号的第二参考信号类型与第二门限值；或者，接入网设备发送专有信令，该专有信令中携带有待测量的参考信号的第二参考信号类型与第二门限值。专有信令是仅发送给第一UE的控制信令。
对应地，第一UE接收接入网设备配置的待测量的参考信号的第二参考信号类型与第二门限值。第一UE接收接入网设备发送的广播信令或专有信令，该广播信令或专有信令中携带有：待测量的参考信号的第二参考信号类型与第二门限值。
需要说明的是，接入网设备还可以向第二UE配置参考信号的第二参考信号类型与第二门限值，由第二UE接收接入网设备配置的待测量的参考信号的第二参考信号类型与第二门限值。
步骤602，第二UE向第一UE配置参考信号的第一信号类型与第一门限值。
示例性的，第二UE向第一UE发送第二单播SideLink RRC消息，第二单播SideLink RRC消息包括：待测量的参考信号的第一信号类型与第一门限值。
对应的，第一UE接收第二UE配置待测量的参考信号的第一信号类型与第一门限值。示例性的，第一UE接收第二UE发送的第二单播SideLink RRC消息，该第二单播SideLink RRC消息包括：待测量的参考信号的第一信号类型与第一门限值。
需要说明的是，步骤602的配置过程也可以反向执行，也即由第一UE向第二UE配置待测量的参考信号的第一信号类型与第一门限值，本实施例对此不加以限定。
步骤603，第一UE选取第一参考类型与第一门限值，作为待测量的参考信号的信号类型和门限值。
当同时存在UE和接入网设备分别配置的信号类型和门限值时，第一UE选取由UE配置(或选择)的第一信号类型与第一门限值，作为待测量的参考信号 的信号类型和门限值。
步骤604，第二UE向第一UE发送参考信号。
第二UE根据配置的参考信号的第一信号类型，向第一UE发送参考信号。
步骤605，第一UE测量第二UE发送的参考信号的测量结果。
第一UE会周期性地接收第二UE发送的参考信号并进行测量。
参考信号的测量结果包括但不限于：参考信号的接收功率、参考信号的信噪比、参考信号的信干噪比中的至少一种。本实施例，以参考信号的测量结果是参考信号的接收功率来举例说明。
可选地，第一UE还会对参考信号的测量结果进行高层滤波。以测量结果是参考信号的接收功率为例：
第一UE的高层(L3层)采用如下公式过滤测量结果：
F n＝(1-a)*F n-1+a*M n；
其中，M n是最近一次的测量结果，F n-1为更新之前的过滤测量结果，F n为更新之后的过滤测量结果，a＝1/2 (ki/4)，k i为配置值。
步骤606，第一UE在参考信号的测量结果的变化值大于第一门限值时，根据参考信号的测量结果向第二UE上报参考信号的测量报告。
当参考信号的测量结果的变化值大于第一门限值时，第二UE即会接收到第一UE上报的参考信号的测量报告。示例性的，参考信号的测量报告中包括：参考信号的测量结果，可选地，参考信号的测量报告中还包括：参考信号的信号类型。
步骤607，第二UE接收第一UE上报的参考信号的测量报告。
当参考信号的测量结果的变化值大于门限值是，第二UE即会接收到第一UE上报的参考信号的测量报告，测量报告中包含了超过变化值的测量结果和测量结果的信号类型。
步骤608，第二UE根据测量报告进行功率控制。
第二UE根据参考信号的发送功率和接收功率之差，确定出路径损失；第二UE根据路径损失确定出车联网通信时的发送功率。
综上所述，本实施例提供的方法，通过在第二UE和接入网设备同时进行门限值与参考信号类型配置之后，第一UE优先选择了由UE配置的参考信号的信号类型和门限值，能够优先保证UE之间的快捷通信。
图7是本公开一个示例性实施例提供的直连通信的功率控制装置的框图。该装置可以通过软件、硬件或者两者的结合实现成为第一UE的全部或一部分。该装置包括：接收模块701、处理模块702和发送模块703。
所述接收模块701，被配置为测量得到第二UE发送的参考信号的测量结果。
所述发送模块703，被配置为在参考信号的测量结果的变化值大于门限值时，根据参考信号的测量结果向第二UE上报参考信号的测量报告，测量报告用于供第二UE进行功率控制。
在一个可选的实施例中，所述发送模块703，被配置为在所述参考信号的测量结果变化大于所述门限值时，向所述第二UE发送第一单播直连通信无线资源控制消息；
其中，所述第一单播直连通信无线资源控制消息包括：所述参考信号的信号类型和高层滤波后的所述测量结果。
在一个可选的实施例中，所述接收模块701，被配置为接收所述第二UE配置的待测量的所述参考信号的信号类型和所述门限值。
在一个可选的实施例中，所述接收模块701，被配置为接收所述第二UE发送的第二单播直连通信资源控制消息，所述第二单播直连通信无线资源控制消息包括：待测量的所述参考信号的信号类型和所述门限值。
在一个可选的实施例中，所述接收模块701，被配置为接收接入网设备配置的待测量的所述参考信号的信号类型和所述门限值。
在一个可选的实施例中，所述接收模块701，被配置为接收所述接入网设备发送的广播信令，所述广播信令包括：待测量的所述参考信号的信号类型和所述门限值；或，所述接收模块701，被配置为接收接入网设备发送的专有信令，所述专有信令包括：待测量的所述参考信号的信号类型和所述门限值。
在一个可选的实施例中，所述装置还包括：
所述接收模块701，被配置为接收所述第二UE配置的所述参考信号的第一信号类型和第一门限值；
所述接收模块701，被配置为接收接入网设备配置的所述参考信号的第二信号类型和第二门限值；
所述处理模块703，被配置为将所述第一信号类型和所述第一门限值，确定为待测量的所述参考信号的信号类型和门限值。
在一个可选的实施例中，所述参考信号的信号类型包括如下类型中的至少 一种：
SLSS；
SideLink CSI-RS；
DMRS。
图8是本公开一个示例性实施例提供的直连通信的功率控制装置的框图。该装置可以通过软件、硬件或者两者的结合实现成为第二UE的全部或一部分。该装置包括：
发送模块801，被配置为向第一UE发送参考信号；
接收模块802，被配置为接收第一UE上报的参考信号的测量报告，测量报告是第一UE在参考信号的测量结果的变化值大于门限值时上报的，变化值用于指示参考信号的测量结果相对于上一次上报的测量结果的变化；
处理模块803，被配置为根据参考信号的测量报告进行车联网通信时的功率控制。
在一个可选的实施例中，所述接收模块802，被配置为接收所述第一UE发送的第一单播直连通信无线资源控制消息，所述第一单播直连通信无线资源控制消息包括：所述参考信号的信号类型和高层滤波后的所述测量结果。
在一个可选的实施例中，所述处理模块803，被配置为向所述第一UE配置待测量的所述参考信号的信号类型和所述门限值。
在一个可选的实施例中，所述发送模块801，被配置为向所述第一UE发送第二单播直连通信资源控制消息，所述第二单播直连通信无线资源控制消息包括：待测量的所述参考信号的信号类型和所述门限值。
在一个可选的实施例中，所述参考信号的信号类型包括如下类型中的至少一种：
SLSS；
SideLink CSI-RS；
DMRS。
图9示出了本公开一个示例性实施例提供的车联网设备(或称V2X发送终端、V2X接收终端)的结构示意图，该车联网设备包括：
处理器901包括一个或者一个以上处理核心，处理器901通过运行软件程 序以及模块，从而执行各种功能应用以及信息处理。
接收器902和发射器903可以实现为一个通信组件，该通信组件可以是一块通信芯片。
存储器904通过总线905与处理器901相连。
存储器904可用于存储至少一个指令，处理器901用于执行该至少一个指令，以实现上述方法实施例中的各个步骤。
本公开一示例性实施例还提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或指令集由所述处理器加载并执行以实现上述各个方法实施例提供的直连通信的功率控制方法。
应当理解的是，在本文中提及的“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (29)

  1. 一种直连通信的功率控制方法，其特征在于，所述方法应用于车联网V2X中的第一用户设备UE中，所述方法包括：
    所述第一UE测量得到第二UE发送的参考信号的测量结果；
    所述第一UE在所述参考信号的测量结果的变化值大于门限值时，根据所述参考信号的测量结果向所述第二UE上报所述参考信号的测量报告，所述测量报告用于供所述第二UE进行功率控制；
    其中，所述变化值用于指示所述参考信号的测量结果相对于上一次上报的测量结果的变化。
  2. 根据权利要求1所述的方法，其特征在于，所述根据所述参考信号的测量结果向所述第二UE上报所述参考信号的测量报告，包括：
    向所述第二UE发送第一单播直连通信无线资源控制消息；
    其中，所述第一单播直连通信无线资源控制消息包括：所述参考信号的信号类型和高层滤波后的所述测量结果。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述第一UE接收所述第二UE配置的待测量的所述参考信号的信号类型和所述门限值。
  4. 根据权利要求3所述的方法，其特征在于，所述第一UE接收所述第二UE配置的待测量的所述参考信号的信号类型和所述门限值，包括：
    所述第一UE接收所述第二UE发送的第二单播直连通信资源控制消息，所述第二单播直连通信无线资源控制消息包括：待测量的所述参考信号的信号类型和所述门限值。
  5. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述第一UE接收接入网设备配置的待测量的所述参考信号的信号类型和所述门限值。
  6. 根据权利要求5所述的方法，其特征在于，所述第一UE接收接入网设备配置的待测量的所述参考信号的信号类型和所述门限值，包括：
    所述第一UE接收接入网设备发送的广播信令，所述广播信令包括：待测量的所述参考信号的信号类型和所述门限值；
    或，
    所述第一UE接收接入网设备发送的专有信令，所述专有信令包括：待测量的所述参考信号的信号类型和所述门限值。
  7. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述第一UE接收所述第二UE配置的所述参考信号的第一信号类型和第一门限值；
    所述第一UE接收接入网设备配置的所述参考信号的第二信号类型和第二门限值；
    所述第一UE将所述第一信号类型和所述第一门限值，确定为待测量的所述参考信号的信号类型和门限值。
  8. 根据权利要求1所述的方法，其特征在于，所述参考信号的信号类型包括如下类型中的至少一种：
    旁路同步信号SLSS；
    直连通信信道状态信息参考信号SideLink CSI-RS；
    解调参考信号DMRS。
  9. 一种直连通信的功率控制方法，其特征在于，所述方法应用于车联网V2X中的第二用户设备UE中，所述方法包括：
    所述第二UE向第一UE发送参考信号；
    所述第二UE接收所述第一UE上报的所述参考信号的测量报告，所述测量报告是所述第一UE在所述参考信号的测量结果的变化值大于门限值时上报的，所述变化值用于指示所述参考信号的测量结果相对于上一次上报的测量结果的变化；
    所述第二UE根据所述参考信号的测量报告进行车联网通信时的功率控制。
  10. 根据权利要求9所述的方法，其特征在于，所述第二UE接收所述第一UE上报的所述参考信号的测量报告，包括：
    所述第二UE接收所述第一UE发送的第一单播直连通信无线资源控制消息，所述第一单播直连通信无线资源控制消息包括：所述参考信号的信号类型和高层滤波后的所述测量结果。
  11. 根据权利要求9或10所述的方法，其特征在于，所述方法还包括：
    所述第二UE向所述第一UE配置待测量的所述参考信号的信号类型和所述门限值。
  12. 根据权利要求11所述的方法，其特征在于，所述第一UE接收所述第二UE配置的待测量的所述参考信号的信号类型和所述门限值，包括：
    所述第二UE向所述第一UE发送第二单播直连通信资源控制消息，所述第二单播直连通信无线资源控制消息包括：待测量的所述参考信号的信号类型和所述门限值。
  13. 根据权利要求11所述的方法，其特征在于，所述参考信号的信号类型包括如下类型中的至少一种：
    旁路同步信号SLSS；
    直连通信信道状态信息参考信号SideLink CSI-RS；
    解调参考信号DMRS。
  14. 一种直连通信的功率控制装置，其特征在于，所述装置包括：
    接收模块，被配置为测量得到第二UE发送的参考信号的测量结果；
    发送模块，被配置为在所述参考信号的测量结果的变化值大于门限值时，根据所述参考信号的测量结果向所述第二UE上报所述参考信号的测量报告，所述测量报告用于供所述第二UE进行功率控制；
    其中，所述变化值用于指示所述参考信号的测量结果相对于上一次上报的测量结果的变化。
  15. 根据权利要求14所述的装置，其特征在于，
    所述发送模块，被配置为在所述参考信号的测量结果变化大于所述门限值时，向所述第二UE发送第一单播直连通信无线资源控制消息；
    其中，所述第一单播直连通信无线资源控制消息包括：所述参考信号的信号类型和高层滤波后的所述测量结果。
  16. 根据权利要求14或15所述的装置，其特征在于，
    所述接收模块，被配置为接收所述第二UE配置的待测量的所述参考信号的信号类型和所述门限值。
  17. 根据权利要求16所述的装置，其特征在于，
    所述接收模块，被配置为接收所述第二UE发送的第二单播直连通信资源控制消息，所述第二单播直连通信无线资源控制消息包括：待测量的所述参考信号的信号类型和所述门限值。
  18. 根据权利要求14或15所述的装置，其特征在于，
    所述接收模块，被配置为接收接入网设备配置的待测量的所述参考信号的信号类型和所述门限值。
  19. 根据权利要求18所述的装置，其特征在于，
    所述接收模块，被配置为接收所述接入网设备发送的广播信令，所述广播信令包括：待测量的所述参考信号的信号类型和所述门限值；
    或，
    所述接收模块，被配置为接收接入网设备发送的专有信令，所述专有信令包括：待测量的所述参考信号的信号类型和所述门限值。
  20. 根据权利要求14或15所述的装置，其特征在于，所述装置还包括：处理模块；
    所述接收模块，被配置为接收所述第二UE配置的所述参考信号的第一信号 类型和第一门限值；
    所述接收模块，被配置为接收接入网设备配置的所述参考信号的第二信号类型和第二门限值；
    所述处理模块，被配置为将所述第一信号类型和所述第一门限值，确定为待测量的所述参考信号的信号类型和门限值。
  21. 根据权利要求14所述的装置，其特征在于，所述参考信号的信号类型包括如下类型中的至少一种：
    旁路同步信号SLSS；
    直连通信信道状态信息参考信号SideLink CSI-RS；
    解调参考信号DMRS。
  22. 一种直连通信的功率控制设备，其特征在于，所述装置包括：
    发送模块，被配置为向第一UE发送参考信号；
    接收模块，被配置为接收所述第一UE上报的所述参考信号的测量报告，所述测量报告是所述第一UE在所述参考信号的测量结果的变化值大于门限值时上报的，所述变化值用于指示所述参考信号的测量结果相对于上一次上报的测量结果的变化；
    处理模块，被配置为根据所述参考信号的测量报告进行车联网通信时的功率控制。
  23. 根据权利要求20所述的装置，其特征在于，
    所述接收模块，被配置为接收所述第一UE发送的第一单播直连通信无线资源控制消息，所述第一单播直连通信无线资源控制消息包括：所述参考信号的信号类型和高层滤波后的所述测量结果。
  24. 根据权利要求19或20所述的装置，其特征在于，
    所述处理模块，被配置为向所述第一UE配置待测量的所述参考信号的信号类型和所述门限值。
  25. 根据权利要求22所述的装置，其特征在于，：
    所述发送模块，被配置为向所述第一UE发送第二单播直连通信资源控制消息，所述第二单播直连通信无线资源控制消息包括：待测量的所述参考信号的信号类型和所述门限值。
  26. 根据权利要求22所述的装置，其特征在于，所述参考信号的信号类型包括如下类型中的至少一种：
    旁路同步信号SLSS；
    直连通信信道状态信息参考信号SideLink CSI-RS；
    解调参考信号DMRS。
  27. 一种车联网设备，其特征在于，所述终端包括：
    处理器；
    与所述处理器相连的收发器；
    其中，所述处理器被配置为加载并执行可执行指令以实现如权利要求1至8任一所述的直连通信的功率控制方法。
  28. 一种车联网设备，其特征在于，所述终端包括：
    处理器；
    与所述处理器相连的收发器；
    其中，所述处理器被配置为加载并执行可执行指令以实现如权利要求9至13任一所述的直连通信的功率控制方法。
  29. 一种计算机可读存储介质，所述计算机可读存储介质中存储有至少一条指令、至少一段程序、代码集或指令集，所述至少一条指令、所述至少一段程序、所述代码集或所述指令集由处理器加载并执行以实现如权利要求1至13任一所述的直连通信的功率控制方法。
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