WO2021003623A1 - Method, apparatus, and device for controlling transmission power in direct connection communications, and storage medium - Google Patents
Method, apparatus, and device for controlling transmission power in direct connection communications, and storage medium Download PDFInfo
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- 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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- power control
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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]
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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
- H04W52/22—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
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- 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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Abstract
Provided in the present disclosure are a method, an apparatus, and a device for controlling transmission power in direct connection communications, and a storage medium, relating to the field of mobile communications, and the method comprising: a first UE sending an ith SL-RSRP report to a second UE; after a length of time T after sending the ith SL-RSRP report, the first UE restarting RSRP high layer filtering; and the first UE sending an i+1th RSRP report to the second UE, the i+1th SL-RSRP report being used to allow the second UE to control transmission power. In the present disclosure, the second UE is enabled to obtain a relatively accurate SL-RSRP report for the sending power after each adjustment, improving the accuracy of transmission power control during internet of vehicles communications of sending end user equipment, thereby reducing interference between various user equipment during internet of vehicles communications.
Description
本公开涉及移动通信领域,特别涉及一种直连通信的发送功率控制方法、装置、设备及存储介质。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.
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。Vehicle to Everything (V2X) is a new generation of information and communication technology that connects vehicles with everything. V stands for vehicles, and X stands for any object that interacts with the vehicle. At present, 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.
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和组播业务,如何调整合理的发送功率以减少干扰,尚不存在合理的解决方案。In the fifth-generation mobile communication technology (5th-Generation, 5G), there is no reasonable solution for how to adjust a reasonable transmission power to reduce interference for unicast services and multicast services of direct communication.
发明内容Summary of the invention
本公开实施例提供了一种直连通信的发送功率控制方法、装置、设备及存储介质,可以用于解决针对直连通信的单播业务和组播业务,发送端用户设备如何调整合理的发送功率以减少干扰的问题。所述技术方案如下: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:
一个方面,提供了一种直连通信的发送功率控制方法,应用于V2X中的第一UE中,所述方法包括:In one aspect, a transmission power control method for direct communication is provided, which is applied to a first UE in V2X, and the method includes:
所述第一UE向第二UE发送第i个直连通信参考信号接收功率(Side Link Reference Signal Received Power,SL-RSRP)报告,所述第i个SL-RSRP报告用于供所述第二UE进行发送功率控制,i为整数;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;
所述第一UE在发送第i个所述SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波;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;
所述第一UE向所述第二UE发送第i+1个RSRP报告,所述第i+1个 SL-RSRP报告用于供所述第二UE进行发送功率控制。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.
在一个可选的实施例中,所述重新启动SL-RSRP的高层滤波,包括:In an optional embodiment, said restarting the high-level filtering of SL-RSRP includes:
初始化F
n-1为0;
Initialize F n-1 to 0;
初始化F
n为M
n,M
n为最近一次的物理层测量结果;
Initialize F n as M n , and M n is the most recent physical layer measurement result;
按照如下公式重新开始进行所述SL-RSRP的高层滤波:Restart the high-level filtering of the SL-RSRP according to the following formula:
F
n=(1-a)*F
n-1+a*M
n;
F n =(1-a)*F n-1 +a*M n ;
其中,所述F
n-1为更新之前的过滤测量结果,所述F
n为更新之后的过滤测量结果,a为配置参数。
Wherein, the F n-1 is the filtered measurement result before the update, the F n is the filtered measurement result after the update, and a is a configuration parameter.
另一方面,提供了一种直连通信的发送功率控制方法,应用于V2X中的UE中,所述方法包括:On the other hand, a transmission power control method for direct communication is provided, which is applied to a UE in V2X, and the method includes:
所述第二UE接收第一UE发送的第i个SL-RSRP报告;Receiving, by the second UE, the i-th SL-RSRP report sent by the first UE;
所述第二UE在接收到第i个所述SL-RSRP报告后的T时长内,根据第i个所述SL-RSRP报告进行发送功率控制;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;
其中,所述第i个所述SL-RSRP报告是所述第一UE在发送第i-1个SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波后生成的。Wherein, 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.
另一方面,提供了一种直连通信的发送功率控制方法,应用于V2X中的第一UE中,所述方法包括:On the other hand, there is provided a transmission power control method for direct communication, which is applied to a first UE in V2X, and the method includes:
所述第一UE测量第二UE发送的参考信号的接收功率,生成未经过高层滤波的SL-RSRP报告;Measuring the received power of the reference signal sent by the second UE by the first UE, and generating an SL-RSRP report without high-layer filtering;
所述第一UE向第二UE发送所述SL-RSRP报告,所述SL-RSRP报告用于供所述第二UE进行发送功率控制。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.
另一方面,提供了一种直连通信的发送功率控制方法,应用于V2X中的第二UE中,所述方法包括:On the other hand, there is provided a transmission power control method for direct communication, which is applied to a second UE in V2X, and the method includes:
所述第二UE向第一UE发送参考信号;Sending a reference signal by the second UE to the first UE;
所述第二UE接收所述第一UE上报的SL-RSRP报告,所述SL-RSRP报告中的SL-RSRP是未经过高层滤波的SL-RSRP;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;
所述第二UE根据所述SL-RSRP报告进行发送功率控制。The second UE performs transmit power control according to the SL-RSRP report.
另一方面,提供了一种直连通信的发送功率控制装置,所述装置包括:In another aspect, there is provided a transmission power control device for direct communication, the device comprising:
发送模块,被配置为向第二UE发送第i个SL-RSRP报告,所述第i个SL-RSRP报告用于供所述第二UE进行发送功率控制,i为整数;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;
重启模块,被配置为在发送第i个所述SL-RSRP报告后的T时长后,重新 启动SL-RSRP的高层滤波;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;
所述发送模块,被配置为向所述第二UE发送第i+1个RSRP报告,所述第i+1个SL-RSRP报告用于供所述第二UE进行发送功率控制。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.
在一个可选的实施例中,所述重启模块,被配置为初始化F
n-1为0;初始化F
n为M
n,M
n为最近一次的物理层测量结果;按照如下公式重新开始进行所述SL-RSRP的高层滤波:
In an optional embodiment, 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 high-level filtering of SL-RSRP:
F
n=(1-a)*F
n-1+a*M
n;
F n =(1-a)*F n-1 +a*M n ;
其中,所述F
n-1为更新之前的过滤测量结果,所述F
n为更新之后的过滤测量结果,a为配置参数。
Wherein, the F n-1 is the filtered measurement result before the update, the F n is the filtered measurement result after the update, and a is a configuration parameter.
另一方面,提供了一种直连通信的发送功率控制装置,所述装置包括:In another aspect, there is provided a transmission power control device for direct communication, the device comprising:
接收模块,被配置为接收第一UE发送的第i个SL-RSRP报告;A receiving module configured to receive the i-th SL-RSRP report sent by the first UE;
调整模块,被配置为在接收到第i个所述SL-RSRP报告后的T时长内,根据第i个所述SL-RSRP报告进行发送功率控制;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;
其中,所述第i个所述SL-RSRP报告是所述第一UE在发送第i-1个SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波后生成的。Wherein, 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.
另一方面,提供了一种直连通信的发送功率控制装置,所述装置包括:In another aspect, there is provided a transmission power control device for direct communication, the device comprising:
测量模块,被配置为测量第二UE发送的参考信号的接收功率,生成未经过高层滤波的SL-RSRP报告;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;
发送模块,被配置为向第二UE发送所述SL-RSRP报告,所述SL-RSRP报告用于供所述第二UE进行发送功率控制。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.
另一方面,提供了一种直连通信的发送功率控制装置,所述装置包括:In another aspect, there is provided a transmission power control device for direct communication, the device comprising:
发送模块,被配置为向第一UE发送参考信号;A sending module configured to send a reference signal to the first UE;
接收模块,被配置为接收所述第一UE上报的SL-RSRP报告,所述SL-RSRP报告中的SL-RSRP是未经过高层滤波的SL-RSRP;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;
发送模块,被配置为根据所述SL-RSRP报告进行发送功率控制。The sending module is configured to perform transmission power control according to the SL-RSRP report.
另一方面,提供了一种V2X接收设备,所述设备包括:In another aspect, a V2X receiving device is provided, and the device includes:
处理器;processor;
与所述处理器相连的收发器;A transceiver connected to the processor;
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上方面所述的由第一UE执行的直连通信的发送功率控制方法。Wherein, 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.
另一方面,提供了一种V2X发送设备,所述设备包括:In another aspect, a V2X sending device is provided, and the device includes:
处理器;processor;
与所述处理器相连的收发器;A transceiver connected to the processor;
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上方面所述的由第二UE执行的直连通信的发送功率控制方法。Wherein, 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.
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发送功率控制方法。In another aspect, a computer-readable storage medium is provided, and the 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.
本公开实施例提供的技术方案带来的有益效果至少包括:The beneficial effects brought about by the technical solutions provided by the embodiments of the present disclosure include at least:
通过在发送第i个SL-RSRP报告后,重新启动SL-RSRP的高层滤波,第i个SL-RSRP报告用于供第二UE进行第i次的发送功率调整,由第一UE通过重新启动后的SL-RSRP的高层滤波对第二UE的第i次调整后的新发送功率进行长时监测,从而得到第i+1个SL-RSRP报告,该第i+1个SL-RSRP报告用于供第二UE进行第i+1次的发送功率调整,使得第二UE对每次调整后的发送功率,能够得到较为准确的SL-RSRP报告,提高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,从而减少车联网通信时各个用户设备之间的干扰。By restarting the high-level filtering of SL-RSRP after sending the i-th SL-RSRP report, 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 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 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.
为了更清楚地说明本公开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公开的一些实施例,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。In order to more clearly describe the technical solutions in the embodiments of the present disclosure, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.
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;Fig. 1 shows a block diagram of a communication system provided by an exemplary embodiment of the present disclosure;
图2示出了本公开一个示例性实施例提供的直连通信的发送功率控制方法的流程图;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;
图3示出了本公开一个示例性实施例提供的直连通信的发送功率控制方法的流程图;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;
图4示出了本公开一个示例性实施例提供的直连通信的发送功率控制方法的流程图;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;
图5示出了本公开一个示例性实施例提供的直连通信的发送功率控制方法的时隙表现示意图;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;
图6示出了本公开一个示例性实施例提供的直连通信的发送功率控制方法的流程图;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;
图7示出了本公开一个示例性实施例提供的直连通信的发送功率控制装置的结构示意图;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;
图8示出了本公开一个示例性实施例提供的直连通信的发送功率控制装置的结构示意图;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;
图9示出了本公开一个示例性实施例提供的直连通信的发送功率控制装置的结构示意图;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;
图10示出了本公开一个示例性实施例提供的直连通信的发送功率控制装置的结构示意图;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;
图11是本公开另一个示例性实施例提供的用户设备的结构示意图。Fig. 11 is a schematic structural diagram of a user equipment provided by another exemplary embodiment of the present disclosure.
为使本公开的目的、技术方案和优点更加清楚,下面将结合附图对本公开实施方式作进一步地详细描述。In order to make the objectives, technical solutions, and advantages of the present disclosure clearer, the following further describes the embodiments of the present disclosure in detail with reference to the accompanying drawings.
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。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.
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)。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).
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)。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. One or more access network devices, such as base stations (gNB), are set in the wireless access network.
该系统构架中,数据网络与5G核心网中的用户面功能通过N6参考点(Reference Point)连接,V2X应用服务器与用户设备中的V2X应用通过V1参考点连接;无线接入网与5G核心网中的AMF功能以及UPF功能连接,无线接入网分别通过Uu参考点与用户设备1以及用户设备5连接;多个用户设备之间通过PC5参考点进行直连通信,多个V2X应用之间通过V5参考点连接。上述参考点也可称为“接口”。In this system architecture, 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".
在新空口(New Radio,NR)V2X讨论中,RAN1决议支持对于直连通信的单播、组播业务使用物理层混合自动重传请求(Hybrid Automatic Repeat reQuest,HARQ)重传机制。同时,为了减少干扰,对于单播数据通信,支持基于发送端用户设备到接收端用户设备的路径损耗(pathloss)进行发送功率控制。在发送功率的控制过程中,支持接收端用户设备上报SL-RSRP报告给发送端用户设备,由发送端用户设备根据SL-RSRP报告进行路损估计,进而根据路损估计的估计结果来调整发送功率。In the New Radio (NR) V2X discussion, 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. At the same time, in order to reduce interference, for unicast data 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. In the transmission power control process, 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.
其中,SL-RSRP为接收端用户设备经过高层(layer 3)滤波后的长时测量结果。示例性的,接收端用户设备按照一定的时间间隔来对发送端用户设备发送的参考信号进行测量,该参考信号可以是解调参考信号或。对于物理层的测量结果,在用于评估报告标准或测量报告之前,接收端用户设备中的高层采用如下公式过滤测量结果:Among them, 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). Exemplarily, 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. For the measurement results of the physical layer, before being used to evaluate report standards or measurement reports, the upper layer in the user equipment at the receiving end uses the following formula to filter the measurement results:
F
n=(1-a)*F
n-1+a*M
n;
F n =(1-a)*F n-1 +a*M n ;
其中,M
n是最近一次的物理层测量结果,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。
Among them, 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) , and k i is the configuration value.
此外,在NR上行通信中,用户设备的上行发送功率控制中的路损估计方法为:In addition, in NR uplink communication, the path loss estimation method in the uplink transmit power control of the user equipment is:
PL=referenceSignalPower–higher layer filtered RSRPPL=referenceSignalPower--higher layer filtered RSRP
其中,referenceSignalPower为基站向用户设备发送的下行参考信号的发送功率,该发送功率通常是保持不变的;higher layer filtered RSRP为用户设备测量得到的下行参考信号的接收功率。Among them, 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.
根据上述公式可知,SL-RSRP报告是长时测量结果。SL-RSRP值为一段较长时间内的多个测量结果的加权平均值。在NR上行通信的用户设备和基站之间 的上行发送功率控制过程中,基站在发送下行参考信号时的发送功率是保持不变的。而在直连通信的单播场景中,发送端用户设备的发送功率会根据路损估计进行不断调整。如果接收端用户设备测量得到的多个测量值对应的发送端发送功率不一致,很难根据SL-RSRP值进行正确的路损估计,从而影响直连通信的功率控制的效果。According to the above formula, 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. In the uplink transmission power control process between the user equipment of NR uplink communication and the base station, the transmission power of the base station when transmitting the downlink reference signal remains unchanged. In the unicast scenario of direct communication, 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.
图2示出了本公开一个示例性实施例提供的直连通信的发送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: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:
步骤201,第一UE向第二UE发送第i个SL-RSRP报告,第i个SL-RSRP报告用于供第二UE进行发送功率控制;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.
第一UE是接收端用户设备,第二UE是发送端用户设备。The first UE is user equipment at the receiving end, and the second UE is user equipment at the transmitting end.
第二UE周期性地向第一UE发送参考信号,该参考信号可以是解调参考信号(Demodulation Reference Signal,DMRS);或者,该参考信号可以是信道状态信息参考信号(Channel State Information-Reference Signal,CSI-RS)。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).
SL-RSRP报告中携带有第一UE测量到的SL-RSRP。该SL-RSRP是第一UE中的高层(layer 3)进行高层滤波(L3filter)后的SL-RSRP。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).
可选地,第一UE周期性地向第二UE发送SL-RSRP报告。第i个SL-RSRP报告可以是周期性上报的多个SL-RSRP报告中的任意一个,i为整数。当第二UE接收到第i个SL-RSRP报告后,可以进行第i次的发送功率控制。Optionally, 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. After the second UE receives the i-th SL-RSRP report, the i-th transmit power control can be performed.
可选地,第二UE在接收到第i个SL-RSRP报告后,根据最近的参考信号的发送功率(比如根据第i-1个SL-RSRP报告调整后的发送功率)和第i个SL-RSRP报告中的接收功率来计算路损,进而根据该路损进行发送功率控制。Optionally, 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.
步骤202,第一UE在发送第i个SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波;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.
在第一UE发送第i个SL-RSRP报告后的T时长后,第一UE认为第二UE的第i次的发送功率控制已经调整完毕,重新启动SL-RSRP的高层滤波。也即,T大于第二UE根据第i个SL-RSRP报告调整发送功率所需的时长。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.
示例性的,第二UE在接收到第i+1个RSRP报告之前,仅根据第i个SL-RSRP对发送功率进行一次调整。Exemplarily, the second UE adjusts the transmission power only once according to the i-th SL-RSRP before receiving the i+1-th RSRP report.
“重新启动SL-RSRP的高层滤波”是指清除历史的滤波测量结果,重新开 始新的一轮SL-RSRP的高层滤波。"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.
步骤203,第一UE向第二UE发送第i+1个RSRP报告,第i+1个SL-RSRP报告用于供第二UE进行发送功率控制。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.
第一UE在SL-RSRP的高层滤波后,对SL-RSRP进行一段时间的长时监测,然后等待下一个上波时机时,第一UE向第二UE发送第i+1个RSRP报告。其中,第i+1个SL-RSRP报告用于供第二UE进行第i+1次的发送功率控制。After the high-level filtering of the SL-RSRP, 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. Wherein, the i+1th SL-RSRP report is used for the second UE to perform the i+1th transmit power control.
可选地,第二UE在接收到第i+1个SL-RSRP报告后,根据最近的参考信号的发送功率(比如根据第i个SL-RSRP报告调整后的发送功率)和第i+1个SL-RSRP报告中的接收功率来计算路损,进而根据该路损进行发送功率控制。Optionally, 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.
示例性的,上述步骤201至步骤203可以周期性的执行多次。Exemplarily, the foregoing steps 201 to 203 may be periodically performed multiple times.
综上所述,本实施例提供的方法,通过在发送第i个SL-RSRP报告后,重新启动SL-RSRP的高层滤波,第i个SL-RSRP报告用于供第二UE进行第i次的发送功率调整,由第一UE通过重新启动后的SL-RSRP的高层滤波对第二UE的第i次调整后的新发送功率进行长时监测,从而得到第i+1个SL-RSRP报告,该第i+1个SL-RSRP报告用于供第二UE进行第i+1次的发送功率调整,使得第二UE对每次调整后的发送功率,能够得到较为准确的SL-RSRP报告,提高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,从而减少车联网通信时各个用户设备之间的干扰。In summary, 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.
图3示出了本公开一个示例性实施例提供的直连通信的发送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: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:
步骤301,第二UE接收第一UE发送的第i个SL-RSRP报告;Step 301: The second UE receives the i-th SL-RSRP report sent by the first UE;
第一UE是接收端用户设备,第二UE是发送端用户设备。The first UE is user equipment at the receiving end, and the second UE is user equipment at the transmitting end.
第二UE周期性地向第一UE发送参考信号,该参考信号可以是解调参考信号(Demodulation Reference Signal,DMRS);或者,该参考信号可以是信道状态信息参考信号(Channel State Information-Reference Signal,CSI-RS)。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).
SL-RSRP报告中携带有第一UE测量到的SL-RSRP。该SL-RSRP是第一UE中的高层(layer 3)进行高层滤波(L3filter)后的SL-RSRP。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).
可选地,第一UE周期性地向第二UE发送SL-RSRP报告。第i个SL-RSRP报告可以是周期性上报的多个SL-RSRP报告中的任意一个,i为整数。当第二 UE接收到第i个SL-RSRP报告后,可以进行第i次的发送功率控制。Optionally, 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. After the second UE receives the i-th SL-RSRP report, it can perform the i-th transmit power control.
步骤302,第二UE在接收到第i个SL-RSRP报告后的T时长内,根据第i个SL-RSRP报告进行发送功率控制;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;
第二UE在接收到第i个SL-RSRP报告后,根据最近的参考信号的发送功率(比如根据第i-1个SL-RSRP报告调整后的发送功率)和第i个SL-RSRP报告中的接收功率来计算路损,进而根据该路损进行第i次的发送功率控制。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.
其中,第i个SL-RSRP报告是第一UE在发送第i-1个SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波后生成的。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.
其中,第一UE和第二UE之间的车联网通信可以是直连通信的单播通信,或者组播通信。Wherein, the IoV communication between the first UE and the second UE may be unicast communication of direct communication, or multicast communication.
综上所述,本实施例提供的方法,通过在发送第i个SL-RSRP报告后,重新启动SL-RSRP的高层滤波,第i个SL-RSRP报告用于供第二UE进行第i次的发送功率调整,由第一UE通过重新启动后的SL-RSRP的高层滤波对第二UE的第i次调整后的新发送功率进行长时监测,从而得到第i+1个SL-RSRP报告,该第i+1个SL-RSRP报告用于供第二UE进行第i+1次的发送功率调整,使得第二UE对每次调整后的发送功率,能够得到较为准确的SL-RSRP报告,提高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,从而减少车联网通信时各个用户设备之间的干扰。In summary, 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.
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发送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: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:
步骤401,第二UE采用第i次的发送功率向第一UE发送参考信号;Step 401: The second UE uses the i-th transmit power to transmit a reference signal to the first UE.
第一UE是接收端用户设备,第二UE是发送端用户设备。The first UE is user equipment at the receiving end, and the second UE is user equipment at the transmitting end.
第二UE采用第i次的发送功率周期性地向第一UE发送参考信号,该参考信号可以是DMRS或CSI-RS。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.
当i为0时,发送功率可以是通信协议预定义的,或者,接入网设备预配置的,或者,第二UE内的默认值。当i大于0时,第i次的发送功率可以是第二UE根据最近一次的SL-RSRP报告来调整得到的。When i is 0, 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. When i is greater than 0, the i-th transmit power may be adjusted by the second UE according to the latest SL-RSRP report.
步骤402,第一UE测量第二UE发送的参考信号的接收功率,采用高层滤波得到第i个SL-RSRP报告;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;
第一UE对第二UE发送的参考信号进行测量,得到最近一次的参考信号接收功率(也即物理层测量结果)。采用高层滤波得到第i个SL-RSRP报告。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.
示例性的,第一UE中的高层采用如下公式过滤测量结果:Exemplarily, the upper layer in the first UE uses the following formula to filter the measurement results:
F
n=(1-a)*F
n-1+a*M
n;
F n =(1-a)*F n-1 +a*M n ;
其中,M
n是最近一次的物理层测量结果,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。
Among them, 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) , and k i is the configuration value.
步骤403,第一UE向第二UE发送第i个SL-RSRP报告;Step 403: The first UE sends the i-th SL-RSRP report to the second UE.
步骤404,第一UE在发送第i个SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波;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.
“重新启动SL-RSRP的高层滤波”是指清除历史的滤波测量结果,重新开始新的一轮SL-RSRP的高层滤波。"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.
在一个示例中,第一UE在发送第i个SL-RSRP报告后,启动定时器。该定时器的定时时长为T,当定时器超时时,重新启动SL-RSRP的高层滤波,如图5所示。In an example, the first UE starts a timer after sending the i-th SL-RSRP report. The timing duration of this timer is T. When the timer expires, the high-level filtering of SL-RSRP is restarted, as shown in Figure 5.
示例性的,第一UE重新启动SL-RSRP的高层滤波包括:Exemplarily, the first UE restarting the high-level filtering of SL-RSRP includes:
1、初始化F
n-1为0;
1. Initialize F n-1 to 0;
2、初始化F
n为M
n,M
n为最近一次的物理层测量结果;
2. Initialize F n as M n , and M n is the most recent physical layer measurement result;
3、按照如下公式重新开始进行SL-RSRP的高层滤波:3. Restart the high-level filtering of SL-RSRP according to the following formula:
F
n=(1-a)*F
n-1+a*M
n;
F n =(1-a)*F n-1 +a*M n ;
其中,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为配置参数。示例性的,a=1/2
(ki/4),k
i为配置值。
Among them, F n-1 is the filtered measurement result before the update, F n is the filtered measurement result after the update, and a is the configuration parameter. Exemplarily, a=1/2 (ki/4) , and k i is the configuration value.
可选地,T大于第二UE根据第i个SL-RSRP报告调整发送功率所需的时长。T为固定值或者预配置的值。Optionally, 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.
可选地,在本步骤之前,第一UE还接收接入网设备发送的下行配置信令;根据下行配置信令来确定T。Optionally, before this step, the first UE also receives downlink configuration signaling sent by the access network device; T is determined according to the downlink configuration signaling.
步骤405,第二UE在接收到第i个SL-RSRP报告后,根据第i个SL-RSRP报告进行发送功率控制;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;
第二UE在接收到第i个SL-RSRP报告后的T时长内,根据第i个SL-RSRP报告进行发送功率控制。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.
第二UE根据第i个SL-RSRP报告获取第i个SL-RSRP。The second UE obtains the i-th SL-RSRP according to the i-th SL-RSRP report.
第二UE计算第i次的发送功率和第i个SL-RSRP之间的功率差值,也即路 损。第二UE根据路损来对发送功率进行调整,得到第i+1次的发送功率。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.
步骤406,第二UE采用第i+1次的发送功率向第一UE发送参考信号;Step 406: The second UE sends the reference signal to the first UE by using the i+1th transmit power.
第二UE采用第i+1次的发送功率周期性地向第一UE发送参考信号,该参考信号可以是DMRS或CSI-RS。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.
步骤407,第一UE测量第二UE发送的参考信号的接收功率,采用高层滤波得到第i+1个SL-RSRP报告;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;
第一UE对第二UE发送的参考信号进行测量,得到最近一次的参考信号接收功率(也即物理层测量结果)。采用重新启动后的高层滤波得到第i+1个SL-RSRP报告。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.
示例性的,第一UE中的高层采用如下公式过滤测量结果:Exemplarily, the upper layer in the first UE uses the following formula to filter the measurement results:
F
n=(1-a)*F
n-1+a*M
n;
F n =(1-a)*F n-1 +a*M n ;
其中,M
n是最近一次的物理层测量结果,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。
Among them, 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) , and k i is the configuration value.
步骤408,第一UE向第二UE发送第i+1个SL-RSRP报告;Step 408: The first UE sends the i+1th SL-RSRP report to the second UE;
步骤409,第一UE在发送第i+1个SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波;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;
“重新启动SL-RSRP的高层滤波”是指清除历史的滤波测量结果,重新开始新的一轮SL-RSRP的高层滤波。"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.
在一个示例中,第一UE在发送第i+1个SL-RSRP报告后,启动定时器。该定时器的定时时长为T,当定时器超时时,重新启动SL-RSRP的高层滤波,如图5所示。In an example, the first UE starts the timer after sending the i+1th SL-RSRP report. The timing duration of this timer is T. When the timer expires, the high-level filtering of SL-RSRP is restarted, as shown in Figure 5.
示例性的,第一UE重新启动SL-RSRP的高层滤波包括:Exemplarily, the first UE restarting the high-level filtering of SL-RSRP includes:
1、初始化F
n-1为0;
1. Initialize F n-1 to 0;
2、初始化F
n为M
n,M
n为最近一次的物理层测量结果;
2. Initialize F n as M n , and M n is the most recent physical layer measurement result;
3、按照如下公式重新开始进行SL-RSRP的高层滤波:3. Restart the high-level filtering of SL-RSRP according to the following formula:
F
n=(1-a)*F
n-1+a*M
n;
F n =(1-a)*F n-1 +a*M n ;
其中,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为配置参数。示例性的,a=1/2
(ki/4),k
i为配置值。
Among them, F n-1 is the filtered measurement result before the update, F n is the filtered measurement result after the update, and a is the configuration parameter. Exemplarily, a=1/2 (ki/4) , and k i is the configuration value.
可选地,T大于第二UE根据第i+1个SL-RSRP报告调整发送功率所需的时长。T为固定值或者预配置的值。Optionally, 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.
可选地,在本步骤之前,第一UE还接收接入网设备发送的下行配置信令; 根据下行配置信令来确定T。Optionally, before this step, the first UE also receives downlink configuration signaling sent by the access network device; and determines T according to the downlink configuration signaling.
步骤410,第二UE在接收到第i+1个SL-RSRP报告后,根据第i+1个SL-RSRP报告进行发送功率控制。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.
第二UE在接收到第i+1个SL-RSRP报告后的T时长内,根据第i+1个SL-RSRP报告进行发送功率控制。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.
第二UE从第i+1个SL-RSRP报告中获取第i+1个SL-RSRP。The second UE obtains the (i+1)th SL-RSRP from the (i+1)th SL-RSRP report.
第二UE计算第i+1次的发送功率和第i+1个SL-RSRP之间的功率差值,也即路损。第二UE根据路损来对发送功率进行调整,得到第i+2次的发送功率。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.
综上所述,本实施例提供的方法,通过在发送第i个SL-RSRP报告后,重新启动SL-RSRP的高层滤波,第i个SL-RSRP报告用于供第二UE进行第i次的发送功率调整,由第一UE通过重新启动后的SL-RSRP的高层滤波对第二UE的第i次调整后的新发送功率进行长时监测,从而得到第i+1个SL-RSRP报告,该第i+1个SL-RSRP报告用于供第二UE进行第i+1次的发送功率调整,使得第二UE对每次调整后的发送功率,能够得到较为准确的SL-RSRP报告,提高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,从而减少车联网通信时各个用户设备之间的干扰。In summary, 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.
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侧的直连通信的发送功率控制方法;由第二UE执行的步骤,可以单独实现成为第二UE侧的直连通信的发送功率控制方法。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.
图6示出了本公开另一示例性实施例提供的直连通信的发送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: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:
步骤601,第二UE向第一UE发送参考信号;Step 601: The second UE sends a reference signal to the first UE;
步骤602,第一UE测量第二UE发送的参考信号的接收功率,生成未经过高层滤波的SL-RSRP报告;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;
在一个示例中,“未经过高层滤波的SL-RSRP报告”是指将上述公式中的a设置为1来实现的高层滤波,本质上为不使用高层滤波。In an example, "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.
步骤603,第一UE向第二UE发送SL-RSRP报告,SL-RSRP报告用于供第二UE进行发送功率控制;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;
步骤604,第二UE接收第一UE上报的SL-RSRP报告,SL-RSRP报告中 的SL-RSRP是未经过高层滤波的SL-RSRP;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;
步骤605,第二UE根据SL-RSRP报告进行发送功率控制。Step 605: The second UE performs transmit power control according to the SL-RSRP report.
综上所述,本实施例提供的方法,通过第一UE向第二UE发送未经过高层滤波的SL-RSRP报告,使得第二UE对每次调整后的发送功率,能够得到较为准确的SL-RSRP报告,提高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,从而减少车联网通信时各个用户设备之间的干扰。In summary, in the method provided in this embodiment, 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.
以下为本公开实施例的装置实施例,对于装置实施例中未详细描述的细节,可参考上述对应的方法实施例,本公开不再一一赘述。The following are device embodiments of the embodiments of the present disclosure. For details that are not described in detail in the device embodiments, reference may be made to the corresponding method embodiments above, and this disclosure will not repeat them one by one.
图7是本公开一个示例性实施例提供的直连通信的发送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: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:
发送模块720,被配置为向第二UE发送第i个SL-RSRP报告,所述第i个SL-RSRP报告用于供所述第二UE进行发送功率控制,i为整数;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;
重启模块740,被配置为在发送第i个所述SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波;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;
所述发送模块720,被配置为向所述第二UE发送第i+1个RSRP报告,所述第i+1个SL-RSRP报告用于供所述第二UE进行发送功率控制。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.
在一个可选的实施例中,所述重启模块740,被配置为初始化F
n-1为0;初始化F
n为M
n,M
n为最近一次的物理层测量结果;按照如下公式重新开始进行所述SL-RSRP的高层滤波:
In an optional embodiment, 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:
F
n=(1-a)*F
n-1+a*M
n;
F n =(1-a)*F n-1 +a*M n ;
其中,所述F
n-1为更新之前的过滤测量结果,所述F
n为更新之后的过滤测量结果,a为配置参数。
Wherein, the F n-1 is the filtered measurement result before the update, the F n is the filtered measurement result after the update, and a is a configuration parameter.
在一个可选的实施例中,所述a=1/2
(ki/4),ki为配置值。
In an optional embodiment, a=1/2 (ki/4) , and ki is a configuration value.
在一个可选的实施例中,所述T大于所述第二UE根据所述第i个SL-RSRP报告调整发送功率所需的时长。In an optional embodiment, 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.
在一个可选的实施例中,所述T为:固定值;或,预配置的值。In an optional embodiment, the T is: a fixed value; or, a pre-configured value.
在一个可选的实施例中,所述装置还包括:In an optional embodiment, the device further includes:
接收模块760,被配置为接收接入网设备发送的下行配置信令;The receiving module 760 is configured to receive downlink configuration signaling sent by the access network device;
所述重启模块740,被配置为根据所述下行配置信令确定所述T。The restart module 740 is configured to determine the T according to the downlink configuration signaling.
综上所述,本实施例提供的装置,通过在发送第i个SL-RSRP报告后,重新启动SL-RSRP的高层滤波,第i个SL-RSRP报告用于供第二UE进行第i次的发送功率调整,由第一UE通过重新启动后的SL-RSRP的高层滤波对第二UE的第i次调整后的新发送功率进行长时监测,从而得到第i+1个SL-RSRP报告,该第i+1个SL-RSRP报告用于供第二UE进行第i+1次的发送功率调整,使得第二UE对每次调整后的发送功率,能够得到较为准确的SL-RSRP报告,提高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,从而减少车联网通信时各个用户设备之间的干扰。In summary, 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.
图8是本公开一个示例性实施例提供的直连通信的发送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: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:
接收模块820,被配置为接收第一UE发送的第i个SL-RSRP报告;The receiving module 820 is configured to receive the i-th SL-RSRP report sent by the first UE;
调整模块840,被配置为在接收到第i个所述SL-RSRP报告后的T时长内,根据第i个所述SL-RSRP报告进行发送功率控制;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;
其中,所述第i个所述SL-RSRP报告是所述第一UE在发送第i-1个SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波后生成的。Wherein, 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.
在一个可选的实施例中,所述调整模块840,被配置为获取参考信号的第i次的发送功率,所述第i次的发送功率是在接收所述第i个SL-RSRP报告之前发送所述参考信号时使用的功率;根据所述第i个SL-RSRP报告获取所述参考信号的接收功率;根据所述第i次的发送功率和所述接收功率之差,计算得到路损;根据所述路损计算第i+1次的发送功率。In an optional embodiment, 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.
在一个可选的实施例中,所述调整模块840,被配置为在接收到所述第i+1个SL-RSRP报告之前,保持所述第i+1次的发送功率。In an optional embodiment, the adjustment module 840 is configured to maintain the i+1th transmission power before receiving the i+1th SL-RSRP report.
综上所述,本实施例提供的装置,通过在发送第i个SL-RSRP报告后,重新启动SL-RSRP的高层滤波,第i个SL-RSRP报告用于供第二UE进行第i次的发送功率调整,由第一UE通过重新启动后的SL-RSRP的高层滤波对第二UE的第i次调整后的新发送功率进行长时监测,从而得到第i+1个SL-RSRP报告,该第i+1个SL-RSRP报告用于供第二UE进行第i+1次的发送功率调整,使得第二UE对每次调整后的发送功率,能够得到较为准确的SL-RSRP报告,提高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,从而减少车联网通 信时各个用户设备之间的干扰。In summary, 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.
图9是本公开一个示例性实施例提供的直连通信的发送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: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:
测量模块920,被配置为测量第二UE发送的参考信号的接收功率,生成未经过高层滤波的SL-RSRP报告;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;
发送模块940,被配置为向第二UE发送所述SL-RSRP报告,所述SL-RSRP报告用于供所述第二UE进行发送功率控制。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.
图10是本公开一个示例性实施例提供的直连通信的发送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: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:
发送模块1020,被配置为向第一UE发送参考信号;The sending module 1020 is configured to send a reference signal to the first UE;
接收模块1040,被配置为接收所述第一UE上报的SL-RSRP报告,所述SL-RSRP报告中的SL-RSRP是未经过高层滤波的SL-RSRP;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;
发送模块1020,被配置为根据所述SL-RSRP报告进行发送功率控制。The sending module 1020 is configured to perform transmission power control according to the SL-RSRP report.
综上所述,本实施例提供的装置,通过第一UE向第二UE发送未经过高层滤波的SL-RSRP报告,使得第二UE对每次调整后的发送功率,能够得到较为准确的SL-RSRP报告,提高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,从而减少车联网通信时各个用户设备之间的干扰。In summary, 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.
图11示出了本公开一个示例性实施例提供的用户设备(或称V2X发送设备、V2X接收设备)的结构示意图,该用户设备包括:处理器1101、接收器1102、发射器1103、存储器1104和总线1105。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.
处理器1101包括一个或者一个以上处理核心,处理器1101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。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.
接收器1102和发射器1103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。The receiver 1102 and the transmitter 1103 may be implemented as a communication component, and the communication component may be a communication chip.
存储器1104通过总线1105与处理器1101相连。The memory 1104 is connected to the processor 1101 through the bus 1105.
存储器1104可用于存储至少一个指令,处理器1101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。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.
此外,存储器1104可以由任何类型的易失性或非易失性存储设备或者它们的组合实现,易失性或非易失性存储设备包括但不限于:磁盘或光盘,电可擦除可编程只读存储器(EEPROM),可擦除可编程只读存储器(EPROM),静态随时存取存储器(SRAM),只读存储器(ROM),磁存储器,快闪存储器,可编程只读存储器(PROM)。In addition, 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) .
在示例性实施例中,还提供了一种包括指令的非临时性计算机可读存储介质,例如包括指令的存储器,上述指令可由用户设备的处理器执行以完成上述直连通信的发送功率控制方法。例如,所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。In an exemplary embodiment, there is also provided a 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. . For example, 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.
一种非临时性计算机可读存储介质,当所述非临时性计算机存储介质中的指令由用户设备的处理器执行时,使得用户设备能够执行上述直连通信的发送功率控制方法。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.
本公开一示例性实施例还提供了一种通信系统,所述系统包括:上述V2X发送设备和上述V2X接收设备。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.
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发送功率控制方法。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.
本领域普通技术人员可以理解实现上述实施例的全部或部分步骤可以通过硬件来完成,也可以通过程序来指令相关的硬件完成,所述的程序可以存储于一种计算机可读存储介质中,上述提到的存储介质可以是只读存储器,磁盘或光盘等。Those of ordinary skill in the art can understand that all or part of the steps in the foregoing embodiments can be implemented by hardware, or by a program instructing relevant hardware to be completed. The program can be stored in a computer-readable storage medium. The storage medium mentioned can be a read-only memory, a magnetic disk or an optical disk, etc.
以上所述仅为本公开的可选实施例,并不用以限制本公开,凡在本公开的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本公开的保护范围之内。The above descriptions are only optional embodiments of the present disclosure and are not intended to limit the present disclosure. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection of the present disclosure. Within range.
Claims (19)
- 一种直连通信的发送功率控制方法,其特征在于,应用于车联网V2X中的第一用户设备UE中,所述方法包括:A transmission power control method for direct communication, characterized in that it is applied to a first user equipment UE in a V2X network of vehicles, and the method includes:所述第一UE向第二UE发送第i个直连通信参考信号接收功率SL-RSRP报告,所述第i个SL-RSRP报告用于供所述第二UE进行发送功率控制,i为整数;The first UE sends the i-th direct communication reference signal received power SL-RSRP report to the second UE, the i-th SL-RSRP report is used for the second UE to perform transmit power control, and i is an integer ;所述第一UE在发送第i个所述SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波;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;所述第一UE向所述第二UE发送第i+1个SL-RSRP报告,所述第i+1个SL-RSRP报告用于供所述第二UE进行发送功率控制。The first UE sends an i+1 th SL-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.
- 根据权利要求1所述的方法,其特征在于,所述重新启动SL-RSRP的高层滤波,包括:The method according to claim 1, wherein said restarting the high-level filtering of SL-RSRP comprises:初始化F n-1为0; Initialize F n-1 to 0;初始化F n为M n,M n为最近一次的物理层测量结果; Initialize F n as M n , and M n is the most recent physical layer measurement result;按照如下公式重新开始进行所述SL-RSRP的高层滤波:Restart the high-level filtering of the SL-RSRP according to the following formula:F n=(1-a)*F n-1+a*M n; F n =(1-a)*F n-1 +a*M n ;其中,所述F n-1为更新之前的过滤测量结果,所述F n为更新之后的过滤测量结果,a为配置参数。 Wherein, the F n-1 is the filtered measurement result before the update, the F n is the filtered measurement result after the update, and a is a configuration parameter.
- 根据权利要求2所述的方法,其特征在于,所述a=1/2 (ki/4),ki为配置值。 The method according to claim 2, wherein a=1/2 (ki/4) , and ki is a configuration value.
- 根据权利要求1至3任一所述的方法,其特征在于,所述T大于所述第二UE根据所述第i个SL-RSRP报告调整发送功率所需的时长。The method according to any one of claims 1 to 3, wherein 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.
- 根据权利要求1至3任一所述的方法,其特征在于,所述T为:The method according to any one of claims 1 to 3, wherein the T is:固定值;Fixed value;或,or,预配置的值。Pre-configured value.
- 根据权利要求1至3任一所述的方法,其特征在于,所述方法还包括:The method according to any one of claims 1 to 3, wherein the method further comprises:接收接入网设备发送的下行配置信令;Receive downlink configuration signaling sent by access network equipment;根据所述下行配置信令确定所述T。Determine the T according to the downlink configuration signaling.
- 一种直连通信的发送功率控制方法,其特征在于,应用于车联网V2X中的第二用户设备UE中,所述方法包括:A transmission power control method for direct communication, characterized in that it is applied to a second user equipment UE in a V2X network of vehicles, and the method includes:所述第二UE接收第一UE发送的第i个直连通信参考信号接收功率SL-RSRP报告;Receiving, by the second UE, the i-th direct communication reference signal received power SL-RSRP report sent by the first UE;所述第二UE在接收到第i个所述SL-RSRP报告后,根据第i个所述SL-RSRP报告进行发送功率控制;After receiving the i-th SL-RSRP report, the second UE performs transmit power control according to the i-th SL-RSRP report;其中,所述第i个所述SL-RSRP报告是所述第一UE在发送第i-1个SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波后生成的,i为整数。Wherein, the i-th SL-RSRP report is generated after the first UE restarts the high-level filtering of SL-RSRP after sending the i-1th SL-RSRP report for T duration, i is Integer.
- 根据权利要求7所述的方法,其特征在于,所述根据第i个所述SL-RSRP报告进行发送功率控制,包括:The method according to claim 7, wherein the performing transmit power control according to the i-th SL-RSRP report comprises:获取参考信号的第i次的发送功率,所述第i次的发送功率是在接收所述第i个SL-RSRP报告之前发送所述参考信号时使用的功率;Acquiring the i-th transmit power of the reference signal, where the i-th transmit power is the power used when transmitting the reference signal before receiving the i-th SL-RSRP report;根据所述第i个SL-RSRP报告获取所述参考信号的接收功率;Acquiring the received power of the reference signal according to the i-th SL-RSRP report;根据所述第i次的发送功率和所述接收功率之差,计算得到路损;Calculate the path loss according to the difference between the i-th transmit power and the received power;根据所述路损计算第i+1次的发送功率。Calculate the i+1th transmit power according to the path loss.
- 一种直连通信的发送功率控制装置,其特征在于,所述装置包括:A transmission power control device for direct communication, characterized in that the device includes:发送模块,被配置为向第二UE发送第i个SL-RSRP报告,所述第i个SL-RSRP报告用于供所述第二UE进行发送功率控制,i为整数;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;重启模块,被配置为在发送第i个所述SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波;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;所述发送模块,被配置为向所述第二UE发送第i+1个RSRP报告,所述第i+1个SL-RSRP报告用于供所述第二UE进行发送功率控制。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.
- 根据权利要求9所述的装置,其特征在于,The device according to claim 9, wherein:所述重启模块,被配置为初始化F n-1为0;初始化F n为M n,M n为最近一次的物理层测量结果;按照如下公式重新开始进行所述SL-RSRP的高层滤波: The restart 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 the high-level filtering of the SL-RSRP according to the following formula:F n=(1-a)*F n-1+a*M n; F n =(1-a)*F n-1 +a*M n ;其中,所述F n-1为更新之前的过滤测量结果,所述F n为更新之后的过滤测量结果,a为配置参数。 Wherein, the F n-1 is the filtered measurement result before the update, the F n is the filtered measurement result after the update, and a is a configuration parameter.
- 根据权利要求9所述的装置,其特征在于,所述a=1/2 (ki/4),ki为配置值。 The apparatus according to claim 9, wherein a=1/2 (ki/4) , and ki is a configuration value.
- 根据权利要求9至11任一所述的装置,其特征在于,所述T大于所述第二UE根据所述第i个SL-RSRP报告调整发送功率所需的时长。The apparatus according to any one of claims 9 to 11, wherein 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.
- 根据权利要求9至11任一所述的装置,其特征在于,所述T为:The device according to any one of claims 9 to 11, wherein the T is:固定值;Fixed value;或,or,预配置的值。Pre-configured value.
- 根据权利要求9至11任一所述的装置,其特征在于,所述装置还包括:The device according to any one of claims 9 to 11, wherein the device further comprises:接收模块,被配置为接收接入网设备发送的下行配置信令;The receiving module is configured to receive downlink configuration signaling sent by the access network device;所述重启模块,被配置为根据所述下行配置信令确定所述T。The restart module is configured to determine the T according to the downlink configuration signaling.
- 一种直连通信的发送功率控制装置,其特征在于,所述装置包括:A transmission power control device for direct communication, characterized in that the device includes:接收模块,被配置为接收第一UE发送的第i个SL-RSRP报告;A receiving module configured to receive the i-th SL-RSRP report sent by the first UE;调整模块,被配置为在接收到第i个所述SL-RSRP报告后的T时长内,根据第i个所述SL-RSRP报告进行发送功率控制;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;其中,所述第i个所述SL-RSRP报告是所述第一UE在发送第i-1个SL-RSRP报告后的T时长后,重新启动SL-RSRP的高层滤波后生成的。Wherein, 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.
- 根据权利要求15所述的装置,其特征在于,The device according to claim 15, wherein:所述调整模块,被配置为获取参考信号的第i次的发送功率,所述第i次的 发送功率是在接收所述第i个SL-RSRP报告之前发送所述参考信号时使用的功率;根据所述第i个SL-RSRP报告获取所述参考信号的接收功率;根据所述第i次的发送功率和所述接收功率之差,计算得到路损;根据所述路损计算第i+1次的发送功率。The adjustment module is configured to obtain the i-th transmission power of the reference signal, where the i-th transmission power is the power used when transmitting the reference signal before receiving the i-th SL-RSRP report; Obtain the received power of the reference signal according to the i-th SL-RSRP report; calculate the path loss according to the difference between the i-th transmitted power and the received power; calculate the i+th according to the path loss Transmission power for 1 time.
- 一种车联网V2X接收设备,其特征在于,所述设备包括:A vehicle networking V2X receiving device, characterized in that, the device includes:处理器;processor;与所述处理器相连的收发器;A transceiver connected to the processor;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6任一所述的直连通信的发送功率控制方法。Wherein, the processor is configured to load and execute executable instructions to implement the transmission power control method for direct communication according to any one of claims 1 to 6.
- 一种车联网V2X发送设备,其特征在于,所设备包括:A vehicle networking V2X sending device is characterized in that the device includes:处理器;processor;与所述处理器相连的收发器;A transceiver connected to the processor;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7至8任一所述的直连通信的发送功率控制方法。Wherein, the processor is configured to load and execute executable instructions to implement the transmission power control method for direct communication according to any one of claims 7 to 8.
- 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8任一所述的直连通信的发送功率控制方法。A computer-readable storage medium storing 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 The instruction set is loaded and executed by the processor to realize the transmission power control method of direct communication according to any one of claims 1 to 8.
Priority Applications (2)
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CN115701149B (en) * | 2021-07-14 | 2024-08-09 | 宸芯科技股份有限公司 | Method, device, equipment and medium for controlling power under unicast service of Internet of vehicles |
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