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WO2021063195A1 - Procédé et appareil de mesure de puissance de réception de signal de référence (rsrp) de liaison directe - Google Patents

Procédé et appareil de mesure de puissance de réception de signal de référence (rsrp) de liaison directe Download PDF

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Publication number
WO2021063195A1
WO2021063195A1 PCT/CN2020/116151 CN2020116151W WO2021063195A1 WO 2021063195 A1 WO2021063195 A1 WO 2021063195A1 CN 2020116151 W CN2020116151 W CN 2020116151W WO 2021063195 A1 WO2021063195 A1 WO 2021063195A1
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Prior art keywords
rsrp
direct link
measurement
path loss
measurement period
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PCT/CN2020/116151
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English (en)
Chinese (zh)
Inventor
沈兴亚
曲鑫
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Spreadtrum Communications Shanghai Co Ltd
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Spreadtrum Communications Shanghai Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H04B17/327—Received signal code power [RSCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/06—TPC algorithms
    • H04W52/14—Separate analysis of uplink or downlink
    • H04W52/143—Downlink power control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/242—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account path loss
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/04—Transmission power control [TPC]
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/245—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • 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]
    • H04W4/44—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for communication between vehicles and infrastructures, e.g. vehicle-to-cloud [V2C] or vehicle-to-home [V2H]

Definitions

  • the present disclosure relates to the field of communication technologies, and in particular, to a method and device for measuring RSRP of the reference signal received power of a direct link.
  • LTE Long Term Evolution
  • UE User Equipment
  • UE B which may be multiple UEs
  • PC5 interface is a direct interface between UEs.
  • resource allocation There are two modes of resource allocation, one is scheduled resource allocation, which is configured by the base station through dedicated signaling; the other is automatic resource selection, where the base station can use system messages or RRC (Radio Resource Control) signaling provides a resource pool for direct communication for the UE, and the UE can select a resource for direct communication from the resource pool. If the transmitting UE (Transmitter UE) is not within the network coverage area, the UE can use an automatic resource selection method to select resources for direct communication from a pre-configured resource pool.
  • RRC Radio Resource Control
  • V2X Vehicle-to-Everything
  • Figure 1 shows a V2X scenario.
  • a certain UE sends V2X messages to multiple UEs within the network coverage.
  • both the receiving UE and the sending UE may not be within the network coverage, or some UEs may be within the network coverage.
  • NR New Radio
  • V2X transmission In LTE, if a UE performing V2X transmission uses the transmission resources configured by the serving cell to perform V2X transmission, it needs to perform power control. It cannot transmit according to the maximum power that the UE can transmit, but needs to consider the impact on the serving cell. Therefore, V2X transmission The power needs to be min.
  • the calculation expression of the transmission power of the transmitting UE is as follows:
  • the formula represents the calculation of the transmission power of the transmitting UE on the PSSCH, where M is the number of PSSCH or PSCCH resource blocks used by the transmitting UE, and PL is the path loss of the serving cell detected by the UE (the UE uses the current serving cell to provide The transmission resource is V2X transmission), P CMAX and ⁇ O_PSSCH_3 are the parameters configured by the higher layer.
  • NR V2X power control supports three path loss configurations, namely: only supports Uu port downlink path loss PL gNB-Tx , only supports direct link path loss PL Tx-Rx , and supports Uu port downlink path loss PL at the same time gNB-Tx and direct link loss PL Tx-Rx .
  • the V2X transmitter uses the smaller value between the two as the parameter for transmission power calculation.
  • the direct link path loss PL Tx-Rx is calculated by the V2X transmitter based on the RSRP (Reference Signal Receiving Power) of the direct link fed back by the V2X receiver and the transmit power of the V2X transmitter.
  • Link path loss PL Tx-Rx transmit power-direct link RSRP value.
  • the RSRP of a direct link can be composed of two parts: Layer 1 RSRP and Layer 3 RSRP.
  • L1RSRP can be regarded as the average of one or more measurement results within a time window. For example, a weighted average of multiple measurement results is performed in a 200 millisecond period.
  • L3RSRP filters L1RSRP in the time domain.
  • the one or more measurement results corresponding to the Layer 1 RSRP are physical layer measurement results.
  • Direct link RSRP is measured based on the reference signals sent by the V2X transmitter on the direct link. These reference signals can be the demodulation reference signal (DMRS) of the physical layer direct link control channel (PSCCH, Pysical Sidelink Control Channel).
  • DMRS demodulation reference signal
  • DMRS demodulation reference signal
  • PSSCH physical layer direct link data channel
  • Sidelink direct link
  • the V2X transmitter is configured to calculate the transmission power based on the downlink path loss PL gNB-Tx between the base station and the V2X transmitter and the direct link path between the V2X transmitter and the V2X receiver, PL Tx-Rx.
  • the V2X transmitter obtains PL gNB-Tx each time, and compares it with PL Tx-Rx , and uses the smaller value as a parameter for transmission power calculation.
  • PL Tx-Rx is calculated based on the RSRP of the direct link fed back by the V2X receiving end.
  • the V2X receiver measures the RSRP of the direct link in a configured measurement period.
  • the RSRP is measured based on the reference signal sent by the V2X transmitter on the direct link.
  • the transmission power of these reference signals in a measurement period is determined by The V2X sender is determined. If the transmission power calculation is performed based on PL gNB-Tx and PL Tx-Rx at the same time, the transmission power of the V2X transmitter may change in a measurement period.
  • the transmission power of the V2X transmitter changes in a measurement period, it will cause The calculation of the RSRP of the direct link measured by the V2X receiving end in a measurement period is inaccurate (because the calculation of the RSRP of the direct link requires the transmission power as one of the parameters), which leads to the direct link calculated by the V2X receiving end The path loss is inaccurate, which may further cause the transmission power of the V2X transmitter to fail to meet the requirements of power control.
  • Fig. 2 shows an example of sidelink power control based on downlink pathloss (downlink pathloss) or sidelink pathloss (direct link pathloss).
  • the V2X sender gets the Uu port (the air interface between the base station and the V2X sender) downlink path loss at T0, and the direct link path loss at T0', and the Uu port downlinks
  • the link path loss and the direct link path loss determine the current transmit power, and the transmit power of the V2X transmitter remains unchanged until T2.
  • the V2X transmitter obtains a new downlink path loss, and compares it with the downlink path loss or direct link path loss at T0' to determine the current transmit power, then it will continue until T2 ,
  • the transmit power of the V2X transmitter remains unchanged.
  • the transmit power of the V2X transmitter during the RSRP measurement period of the V2X receiver may have changed.
  • the V2X transmitter uses different path losses in time window 1 (T0'-T2) and time window 2 (T2-T2'). Parameters, resulting in different transmission power.
  • the V2X transmitting end cannot accurately reconstruct the direct link loss in the measurement period, which leads to inaccurate direct link loss, which in turn leads to inaccurate direct link loss.
  • the transmission power cannot meet the power control requirements.
  • the main problem solved by the present invention is how to ensure the accuracy of the RSRP measurement results on the V2X direct link, so as to ensure that in the NR V2X scenario, the transmission power of the V2X transmitter meets the requirements of power control.
  • the present disclosure proposes a method and device for measuring RSRP of the reference signal received power of a direct link.
  • a method for measuring RSRP of the reference signal received power of a direct link is applied to a V2X transmitter, and the method includes:
  • the measurement information of the downlink RSRP configure the measurement information of the direct link RSRP of the V2X sender, the measurement information of the downlink RSRP includes one of the first measurement period, the first time domain start position, and the end position
  • the measurement information of the direct link RSRP includes one or more of a second measurement period, a second time domain start position, and an end position
  • the time period from the start position to the end position of the first time domain is a first measurement period
  • the time period from the start position to the end position of the second time domain is a second measurement period
  • the first measurement period is N times the second measurement period, and the first time domain start position is aligned with N consecutive second time domain start positions or the first time domain end position is aligned with N consecutive second time domains.
  • the end position of the time domain is aligned, where N is a positive integer.
  • a method for measuring RSRP of reference signal received power of a direct link is applied to a V2X transmitter, and the method includes:
  • the first direct link RSRP is the direct link RSRP before the transmit power change
  • the second direct link RSRP is the direct link RSRP after the transmit power change.
  • the first transmit power and the second transmit power are both Is the transmit power of the V2X transmitter.
  • a method for measuring RSRP of reference signal received power of a direct link is applied to a V2X receiving end, and the method includes:
  • the indication information After receiving the indication information, calculate the RSRP of the first direct link and the RSRP of the second direct link, the RSRP of the first direct link is the RSRP of the direct link before the transmit power change, and the RSRP of the second direct link is RSRP of the direct link after the transmission power has changed; the indication information is used to indicate that the transmission power has changed;
  • an RSRP measurement device for reference signal received power of a direct link.
  • the device is applied to a V2X transmitter, and the device includes:
  • the configuration module is used to obtain the measurement information of the downlink RSRP and configure the measurement information of the direct link RSRP of the V2X sender.
  • the measurement information of the downlink RSRP includes a first measurement period, a first time domain start position, and One or more of the end positions, the measurement information of the direct link RSRP includes one or more of the second measurement period, the second time domain start position, and the end position;
  • the time period from the start position to the end position of the first time domain is a first measurement period
  • the time period from the start position to the end position of the second time domain is a second measurement period
  • the first measurement period is N times the second measurement period, and the first time domain start position is aligned with N consecutive second time domain start positions or the first time domain end position is aligned with N consecutive second time domains.
  • the end position of the time domain is aligned, where N is a positive integer.
  • an RSRP measurement device for reference signal received power of a direct link.
  • the device is applied to a V2X transmitter, and the device includes:
  • the instruction module is used to compare the currently determined first transmit power with the current second transmit power determined most recently. If the first transmit power is different from the second transmit power, send instruction information to the V2X receiving end to indicate the direction
  • the V2X sender reports the RSRP of the first direct link and the RSRP of the second direct link;
  • the first direct link RSRP is the direct link RSRP before the transmit power change
  • the second direct link RSRP is the direct link RSRP after the transmit power change.
  • the first transmit power and the second transmit power are both Is the transmit power of the V2X transmitter.
  • an RSRP measurement device for reference signal received power of a direct link.
  • the device is applied to a V2X receiving end, and the device includes:
  • the RSRP calculation module is used to calculate the RSRP of the first direct link and the RSRP of the second direct link after receiving the indication information.
  • the RSRP of the first direct link is the RSRP of the direct link before the transmit power change, and the second The direct link RSRP is the direct link RSRP after the transmission power has changed; the indication information is used to indicate that the transmission power has changed;
  • the first reporting module is configured to report the RSRP of the first direct link and the RSRP of the second direct link.
  • a measurement device for a direct link RSRP including: a processor; a memory for storing executable instructions of the processor; wherein the processor is configured to execute the above method.
  • a non-volatile computer-readable storage medium having computer program instructions stored thereon, wherein the computer program instructions implement the above method when executed by a processor.
  • the RSRP measurement method of the direct link of the present disclosure through the above configuration process, it can be ensured that the transmit power of the V2X transmitting end remains unchanged during a measurement period of the RSRP of the direct link, and the measurement result of the RSRP of the direct link is guaranteed. accuracy.
  • Figure 1 shows a V2X scenario.
  • Figure 2 shows an example of sidelink power control based on downlink path loss or direct link path loss.
  • Fig. 3 shows a schematic diagram of an application scenario according to an embodiment of the present disclosure.
  • Fig. 4 shows a schematic diagram of a method for measuring RSRP of a direct link according to an embodiment of the present disclosure.
  • Fig. 5 shows a schematic diagram of a method for measuring RSRP of a direct link according to an embodiment of the present disclosure.
  • Fig. 6 shows an interaction diagram of a method for measuring RSRP of a direct link according to an embodiment of the present disclosure.
  • Fig. 7 shows a block diagram of an RSRP measurement device for a direct link according to an embodiment of the present disclosure.
  • Fig. 8 shows a block diagram of an RSRP measurement device for a direct link according to an embodiment of the present disclosure.
  • Fig. 9 shows a block diagram of an RSRP measurement device for a direct link according to an embodiment of the present disclosure.
  • the present disclosure provides a method for measuring RSRP of the reference signal received power of a direct link.
  • the method can be applied to the V2X transmitter, and the method can include:
  • the measurement information of the downlink RSRP configure the measurement information of the direct link RSRP of the V2X sender, the measurement information of the downlink RSRP includes one of the first measurement period, the first time domain start and end position Or more, the measurement information of the RSRP of the directly connected link includes one or more of the second measurement period and the start and end positions of the second time domain;
  • the time period from the start position to the end position of the first time domain is a first measurement period
  • the time period from the start position to the end position of the second time domain is a second measurement period
  • the first measurement period is N times the second measurement period, N is a positive integer
  • the first time domain start position is aligned with N consecutive second time domain start positions or the first time domain end position is equal to N The end position of the consecutive second time domain is aligned.
  • the start position of the measurement period of the downlink RSRP is aligned with the start position of the first measurement period of the N consecutive RSRP measurement periods of the directly connected link, and the end position is aligned with the N number of The end positions of the last measurement period of the continuous direct link RSRP measurement period are aligned.
  • the V2X sender configures the direct link RSRP measurement information of the V2X sender according to the downlink RSRP measurement information.
  • Fig. 3 shows a schematic diagram of an application scenario according to an embodiment of the present disclosure.
  • the downlink may refer to the downlink between the base station 1 and the V2X transmitter 2
  • the direct link may refer to the link between the V2X transmitter 2 and the V2X receiver 3.
  • the downlink is the downlink between the NR base station and the V2X transmitter, or the downlink between the LTE base station and the V2X transmitter.
  • the first measurement period may refer to the period during which the V2X transmitter 2 measures the downlink RSRP
  • the second measurement period may refer to the period during which the V2X transmitter 2 measures the RSRP of the direct link.
  • the first measurement period may be a measurement period configured by the network side, or a measurement period generated by the V2X transmitter, or the first measurement period may be a measurement period configured by the network side and a measurement generated by the V2X transmitter.
  • the unit of the measurement period may be milliseconds, and the method for determining the first measurement period is not limited in the present disclosure.
  • the time period from the start position to the end position of the first time domain defines a time window, and the time length corresponding to the time window is a first measurement period.
  • the time period from the start position to the end position of the second time domain defines a time window, and the time length corresponding to the time window is a second measurement period.
  • the starting position of the first time domain or the second time domain may be determined by an offset parameter.
  • the offset parameter may be the remainder of the first system frame number in the first time domain or the first system frame number in the second time domain and the number of frames included in one measurement period.
  • the starting position of the first time domain may be expressed as the remainder obtained by dividing the first system frame number corresponding to the first time domain by the number of frames included in one measurement period.
  • the V2X sender 2 may first obtain the measurement information of the downlink RSRP.
  • the specific method of obtaining the measurement information may be that the network side configures the measurement information of the downlink RSRP through high-level signaling; the network side may It is an NR base station gNB, or an LTE base station eNB; the high-level signaling may be Radio Resource Control (RRC) signaling or MAC CE.
  • RRC Radio Resource Control
  • the measurement period of the downlink RSRP may be 100, 200, 300,..., 1000 milliseconds, etc., which is not specifically limited here.
  • the start or end position of the first time domain is determined by an offset parameter, which is not specifically limited here.
  • the V2X sender 2 may first obtain the measurement information of the downlink RSRP, and the specific obtaining method may be predefined, for example, pre-specified in the standard.
  • the measurement period of the downlink RSRP may be 100, 200, 300,..., 1000 milliseconds, etc., which is not specifically limited here.
  • the start or end position of the first time domain is determined by an offset value, which is not specifically limited here.
  • the measurement information of the direct link RSRP of the V2X transmitter can be configured according to the measurement information of the downlink RSRP.
  • the measurement period of the downlink RSRP can be set to direct
  • the measurement period of the RSRP of the connected link is an integer multiple, that is, the measurement period of the RSRP of the direct link is 1/N of the measurement period of the downlink RSRP of the V2X transmitter, and N is a positive integer.
  • the multiple of the first measurement period relative to the second measurement period may be predefined. That is to say, the multiple of the measurement period of the downlink RSRP relative to the measurement period of the direct link RSRP may be pre-defined.
  • the above-mentioned value of N may be predefined, for example, N may be a positive integer, etc., which is not limited in the present disclosure.
  • the V2X sender can also set the direct link RSRP of the V2X sender according to the start position or end position of the downlink RSRP measurement period.
  • the start or end position of the measurement period For example, if the measurement information of the downlink RSRP includes the start position of the measurement period of the downlink RSRP, then the start position of the measurement period of the direct link RSRP of the V2X transmitter can be compared with the measurement of the downlink RSRP.
  • the start position of the period is aligned; or, if the measurement information of the downlink RSRP includes the end position of the downlink RSRP measurement period, then the end position of the RSRP measurement period of the direct link RSRP of the V2X transmitter can be compared with the downlink RSRP measurement period. The end positions of the RSRP measurement period are aligned.
  • the start position of the measurement period of the direct link RSRP is aligned with the start position of the measurement period of the downlink RSRP, and the end position of the measurement period of the direct link RSRP is aligned with that of the downlink RSRP.
  • the end position of the measurement period is also aligned.
  • N is a value greater than 2
  • the start position of the downlink RSRP measurement period is aligned with the start position of the first measurement period of multiple consecutive RSRP measurement periods of directly connected links, and the end position is aligned with the start position of the first measurement period of multiple continuous RSRP measurement periods.
  • the end positions of the last measurement period of the continuous direct link RSRP measurement period are aligned.
  • the RSRP measurement method of the direct link of the present disclosure through the above configuration process, it can be ensured that the transmit power of the V2X transmitter remains unchanged during a measurement period of the RSRP of the direct link, and the measurement result of the RSRP of the direct link is guaranteed. accuracy.
  • Fig. 4 shows a schematic diagram of a method for measuring RSRP of a direct link according to an embodiment of the present disclosure.
  • the top is the measurement period of the downlink RSRP of the V2X transmitter and the start and end positions of the measurement period.
  • the middle and bottom are the measurement period and the measurement period of the RSRP of the direct link RSRP of the V2X transmitter.
  • Two different examples of start position and end position In the example shown in the middle, the measurement period of the direct link RSRP of the V2X transmitter is the same as the measurement period of the downlink RSRP of the V2X transmitter, and the start and end positions of the measurement period are also the same.
  • the measurement period of the direct link RSRP of the V2X transmitter is 1/2 of the measurement period of the downlink RSRP of the V2X transmitter, and the start position of the measurement period is the same.
  • the V2X transmitter obtains the Uu port downlink path loss measurement result and the direct link path loss measurement result at T2, and based on the downlink path loss measurement result and the direct link
  • the path loss measurement result determines the current transmit power
  • T_SL_Mea1_2 the transmit power of the V2X transmitter remains unchanged.
  • the V2X transmitter obtains the new Uu port downlink path loss measurement results and direct link path loss measurement results, and based on the downlink path loss measurement results and the direct link path loss measurement results to determine the The current transmit power.
  • the transmit power of the V2X transmitter remains unchanged, which can ensure the accuracy of the RSRP measurement result of the direct link, and the calculated direct link path loss measurement result is Accurate, used to calculate the transmit power of the V2X transmitter in the next cycle.
  • the V2X transmitter obtains a new direct link loss measurement result, and combines it with the downlink loss measurement result at T2 or the direct link loss
  • the measurement results determine the current transmit power. Therefore, in a direct link RSRP measurement period (T_SL_Mea2_3), the transmit power of the V2X transmitter remains unchanged, so that the accuracy of the RSRP measurement results of the direct link can be guaranteed, and the calculated direct link path loss
  • the measurement result is accurate and used to calculate the transmit power of the V2X transmitter in the next cycle.
  • the measurement information of the downlink RSRP may further include a filter coefficient in the first measurement period
  • the measurement information of the direct link RSRP may further include a filter coefficient in the second measurement period.
  • the filter coefficient of the V2X transmitter in the second measurement period is related to the filter coefficient of the V2X transmitter in the first measurement period.
  • the filter coefficient of the V2X transmitter in the second measurement period is a subset of the filter coefficient of the V2X transmitter in the first measurement period.
  • the filter coefficient of the V2X transmitter in the second measurement period is configured to be the same as the filter coefficient of the V2X transmitter in the first measurement period.
  • the filter coefficient in the first measurement period may include the filter coefficient corresponding to each measurement result of the downlink RSRP in the first measurement period
  • the filter coefficient in the second measurement period may include the filter coefficient in the second measurement period.
  • the filter coefficient corresponding to each measurement result of the RSRP of the direct link may include the filter coefficient corresponding to each measurement result of the RSRP of the direct link.
  • the V2X receiving end After the V2X receiving end measures multiple measurement results of the RSRP of the direct link in a measurement period, it can use a filter to filter each measurement result in a measurement period to obtain the RSRP value of the direct link, and feed it back To the V2X sender.
  • the filter coefficient of the filter at the V2X receiving end can be configured according to the filter coefficient in the measurement period of the downlink RSRP.
  • the V2X sending end may configure the filter coefficients in the measurement period of the direct link RSRP according to the filter coefficients in the first measurement period in the measurement information of the downlink RSRP.
  • the filter coefficient in the measurement period of the direct link RSRP may be set to be the same as the filter coefficient in the measurement period of the downlink RSRP.
  • the V2X sender configures the RSRP measurement information of the direct link through the direct link radio resource control RRC.
  • the V2X transmitter can configure the RSRP measurement period of the direct link through RRC, the start or end position of the measurement period, the filter coefficients in the measurement period, etc., for example, the V2X transmitter can configure N through RRC. The value of is used to set the multiple of the measurement period of the downlink RSRP relative to the measurement period of the direct link RSRP, so as to configure the measurement period of the direct link RSRP.
  • the value of the RSRP of the direct link is a weighted average value of the physical layer according to each measurement result of the RSRP of the direct link and the corresponding filter coefficient.
  • the corresponding filter coefficient can be used to weight the multiple measurement results of the direct link RSRP and average the results.
  • the weighted average value is used as the RSRP value of the directly connected link.
  • the value of the RSRP of the directly connected link is a result of iteratively updating the weighted average value by the RRC layer.
  • the result of iterating the weighted average value according to the related iterative method can also be used as the RSRP value of the directly connected link.
  • the present disclosure also provides another embodiment of the RSRP measurement method of the reference signal received power of the direct link.
  • the method of this embodiment sends an indication to the V2X receiving end by detecting the change in the transmission power, so that the V2X can receive
  • the terminal measures the corresponding direct link RSRP before and after the change of the transmit power and reports it to the V2X transmitter. In this way, even if the transmit power of the V2X transmitter changes within a measurement period, the V2X transmitter can still obtain an accurate direct link RSRP, thereby calculating an accurate direct link path loss, and correctly controlling the transmit power .
  • the method may include:
  • the V2X sender reports the RSRP of the first direct link and the RSRP of the second direct link;
  • the first direct link RSRP is the direct link RSRP before the transmit power change
  • the second direct link RSRP is the direct link RSRP after the transmit power change.
  • the first transmit power and the second transmit power are both Is the transmit power of the V2X transmitter.
  • the V2X sender obtains the downlink RSRP and the direct link RSRP, calculates the corresponding downlink path loss according to the downlink RSRP, and calculates the corresponding direct link path loss according to the direct link RSRP. Determine the corresponding transmission power according to the downlink path loss and determine the corresponding transmission power according to the direct link path loss. By comparing the transmission power corresponding to the two path loss parameters, select the smaller transmission power as the current V2X transmitter Transmission power.
  • the V2X sender obtains the updated downlink RSRP or direct link RSRP, and obtains the corresponding updated downlink path loss or direct link path loss through calculation, and obtains the corresponding updated Transmission power.
  • the V2X transmitter sends instructions to the V2X receiver to instruct the V2X receiver to report the first direct link to the V2X transmitter RSRP and the second direct link RSRP, that is, the direct link RSRP before the transmission power change and the direct link RSRP after the transmission power change are reported.
  • the indication information includes the time when the transmission power of the V2X transmitting end changes.
  • the V2X receiving end can determine the time when the transmission power of the V2X transmitting end changes according to the indication information, and the direct link RSRP before the changed time and the direct link RSRP after the changed time can be respectively calculated according to the change time.
  • the indication information may include one or both of a path loss parameter used by the first transmission power and a path loss parameter used by the second transmission power.
  • the indication information may include one or both of the direct link path loss identifier of the V2X transmitter and the downlink path loss identifier of the V2X transmitter.
  • the V2X receiver can obtain the path loss parameter used by the first transmission power, the path loss parameter used by the second transmission power, the direct link path loss identifier of the V2X transmitter or the downlink path loss identifier of the V2X transmitter according to the instruction information, etc. . Then, the V2X receiving end can determine the corresponding first link information according to the path loss parameter used by the first transmission power, and can determine the corresponding first RSRP filter according to the first link information, and use the first RSRP filter to determine the corresponding first link information.
  • the multiple measurement results measured before the change time can be filtered to obtain the RSRP of the first direct link; the V2X receiving end can determine the corresponding second link information according to the path loss parameter adopted by the second transmission power, and according to the second
  • the link information may determine the corresponding second RSRP filter, and the second RSRP filter may be used to filter multiple measurement results measured after the time when the transmission power changes, to obtain the second direct link RSRP.
  • the information used to determine which filter to use for filtering in the above process may also be the link path loss identifier corresponding to the path loss parameter used by the first transmission power, which is not limited in the present disclosure.
  • the indication information is carried by direct link radio resource control RRC signaling, or carried by direct link MAC CE, or carried by direct link control information SCI.
  • the V2X sending end can carry the indication information to the V2X receiving end through RRC signaling or MAC CE or SCI.
  • the V2X sender after receiving the RSRP of the first direct link and the RSRP of the second direct link, calculates the first direct link path loss and the second direct link RSRP respectively according to the first direct link RSRP. Calculate the path loss of the second direct link according to the RSRP of the second direct link.
  • the V2X transmitting end may select one of the path loss of the first direct link and the path loss of the second direct link as a parameter for calculating the new first transmit power. For example, the larger direct link path loss is selected as one of the parameters for calculating the new transmission power.
  • the V2X sender after receiving the RSRP of the first direct link and the RSRP of the second direct link, calculates the path loss of the first direct link based on the RSRP of the first direct link. Calculate the path loss of the second direct link according to the RSRP of the second direct link.
  • the V2X transmitting end may select one of the path loss of the first direct link and the path loss of the second direct link as a parameter for calculating the new first transmit power. For example, select a smaller direct link path loss as one of the parameters for calculating the new transmission power.
  • the V2X sender can also calculate the (weighted) average direct link loss of the first direct link loss and the second direct link loss, and set the (weighted) )
  • the average direct link path loss is used as one of the parameters for calculating the new first transmit power.
  • the V2X sender can assign corresponding weighting coefficients to the direct link loss corresponding to each measurement window, and the result obtained after the weighted summation of the multiple direct link loss is used as the new first sender.
  • One of the parameters of power is used as the new first sender.
  • the V2X receiving end can be notified in time when the transmit power of the V2X transmitting end changes, so that the V2X receiving end can measure the direct link before and after the change.
  • the RSRP of the road is reported to the V2X sender.
  • the V2X transmitter can obtain the accurate RSRP of the direct link before and after the change in the transmit power, so as to accurately calculate the direct link path loss, and ensure that the calculated transmit power can meet the power control requirements.
  • the method may include:
  • the RSRP of the first direct link is the RSRP of the direct link before the transmit power change
  • the second direct link RSRP is The link RSRP is the RSRP of the direct link after the transmission power has changed; the indication information is used to indicate that the transmission power has changed; in a possible implementation, the indication information includes the change in the transmission power of the V2X transmitter time.
  • the indication information includes the time when the transmission power changes, that is, the time when the transmission power of the V2X transmitting end changes.
  • the V2X receiving end can determine the time when the transmission power of the V2X transmitting end changes according to the instruction information, and the direct link RSRP before the changed time and the direct link RSRP after the changed time can be calculated separately according to the change time.
  • the processing after the V2X sending end receives the RSRP of the first direct link and the RSRP of the second direct link can refer to the above description, and will not be repeated.
  • the RSRP of the first direct link is calculated based on the RSRP of the direct link before receiving the indication information
  • the RSRP of the second direct link is It is calculated according to the RSRP of the direct link after receiving the indication information. That is to say, when the V2X receiving end receives the indication information, it can calculate the RSRP of the direct link measured before the current cycle to obtain the RSRP of the first direct link, and after receiving the indication information
  • the measured RSRP measurement result of the direct link is used as the basis for calculating the RSRP of the second direct link, that is, the measurement result of the RSRP of the direct link measured after receiving the indication information is calculated to obtain the second direct link Road RSRP.
  • the specific calculation process can be: using the filter coefficients corresponding to the RSRP measurement results of the direct link to weight the measurement results of the direct link RSRP to obtain the weighted average value, and further use related iterative methods to iterate, etc. Etc., this disclosure does not limit this.
  • the V2X receiving end can be notified in time when the transmit power of the V2X transmitting end changes, so that the V2X receiving end can measure the direct link before and after the change.
  • the RSRP of the road is reported to the V2X sender.
  • the V2X transmitter can obtain the accurate RSRP of the direct link before and after the change in the transmit power, so as to accurately calculate the direct link path loss, and ensure that the calculated transmit power can meet the power control requirements.
  • the indication information includes one or both of the path loss parameter used by the first transmission power and the path loss parameter used by the second transmission power; the indication information includes the direct input of the V2X transmitter.
  • Link path loss identifier and the downlink path loss identifier of the V2X sender are possible implementation manners.
  • the V2X receiver can obtain the path loss parameter used by the first transmission power, the path loss parameter used by the second transmission power, the direct link path loss identifier of the V2X transmitter or the downlink path loss identifier of the V2X transmitter according to the instruction information, etc. . Then, the V2X receiving end can determine the corresponding first link information according to the path loss parameter used by the first transmission power, and can determine the corresponding first RSRP filter according to the first link information, and use the first RSRP filter to determine the corresponding first link information.
  • the multiple measurement results measured before the change time can be filtered to obtain the RSRP of the first direct link; the V2X receiving end can determine the corresponding second link information according to the path loss parameter adopted by the second transmission power, and according to the second
  • the link information may determine the corresponding second RSRP filter, and the second RSRP filter may be used to filter multiple measurement results measured after the time when the transmission power changes, to obtain the second direct link RSRP.
  • the information used to determine which filter to use for filtering in the above process may also be the link path loss identifier corresponding to the path loss parameter used by the first transmission power, which is not limited in the present disclosure.
  • the method may further include:
  • the V2X receiving end can report the link information corresponding to the RSRP of the first direct link and the RSRP of the second direct link;
  • the V2X receiving end may report the measurement window information corresponding to the RSRP of the first direct link and the measurement window information corresponding to the RSRP of the second direct link.
  • the link information corresponding to the first direct link RSRP and the second direct link RSRP may refer to the direct link or the downlink corresponding to the first direct link RSRP and the second direct link RSRP.
  • the V2X transmitter can filter the transmission power. Therefore, the corresponding link can be determined based on the link information corresponding to the RSRP of the first direct link and the RSRP of the second direct link reported by the V2X receiver. , Such as direct link or downlink, and then the filter used to filter the transmit power can be determined, that is to say, the link corresponding to the RSRP of the first direct link and the RSRP of the second direct link can be determined The filter filters the calculated transmit power.
  • the measurement window information corresponding to the RSRP of the first direct link may include the measurement start time and end time corresponding to the measurement result of the RSRP of the direct link used for calculating the RSRP of the first direct link.
  • the measurement window information corresponding to the second direct link RSRP may also include the measurement start time and end time corresponding to the measurement result of the direct link RSRP used for calculating the second direct link RSRP.
  • the window composed of the start time and end time of this period of time, It is the measurement window information corresponding to the RSRP of the first direct link or the RSRP of the second direct link.
  • the V2X receiving end maintains two or more sets of RSRP filters, at least one set of the first RSRP filter is related to the downlink path loss of the V2X transmitting end, and at least one set of the second RSRP filter and The direct link path loss is related.
  • the indication information of the V2X transmitting end may include the path loss parameter used by the first transmission power, and the V2X receiving end may determine the filter for filtering the RSRP measurement result of the direct link according to the path loss parameter used by the first transmission power. .
  • the V2X receiving end can use the first RSRP filter to filter the RSRP measurement results of the direct link; if the first transmit power uses Then, the V2X receiving end can use the second RSRP filter to filter the RSRP measurement result of the direct link.
  • the first RSRP filter is used to filter the measured RSRP measurement result of the directly connected link; when the first transmission power is The path loss parameter of is the path loss of the direct link, and the second RSRP filter is used to filter the measured RSRP measurement result of the direct link.
  • the filtered direct link RSRP can be made The value is more accurate.
  • Fig. 5 shows a schematic diagram of a method for measuring RSRP of a direct link according to an embodiment of the present disclosure.
  • Fig. 6 shows an interaction diagram of a method for measuring RSRP of a direct link according to an embodiment of the present disclosure. The method for measuring RSRP of the direct link of the present disclosure will be described in conjunction with Fig. 5 and Fig. 6.
  • the V2X transmitter obtains the Uu port (the air interface between the base station and the V2X transmitter) downlink path loss at T0, and the direct link path loss at T0', and the Uu port downlinks
  • the link path loss and the direct link path loss determine the current transmit power (for example, determine the transmit power 1 based on the downlink path loss, determine the transmit power 2 based on the direct link path loss, select transmit power 1 and transmit
  • the smaller of the power 2 is used as the current transmission power. If the transmission power 2 is smaller, the current transmission power is the transmission power 2), and the transmission power of the V2X transmitting end remains unchanged until T2.
  • the V2X transmitter obtains a new downlink path loss, determines the transmission power 3 according to the new downlink path loss, and compares the transmission power 3 with the current transmission power at time T0', if the transmission power 3 If the current transmission power at the time T0' is smaller than the current transmission power, the new current transmission power has changed.
  • the V2X transmitter compares the first transmit power currently calculated (transmit power 3) with the second transmit power calculated last time (transmit power 2) from the current previous time. If the first transmit power is different from the second transmit power , Then send instructions to the V2X receiving end.
  • the indication information may include the time T2 when the transmission power of the V2X transmitting end changes. It may also include a path loss parameter (direct link path loss) used by the first transmission power and a path loss parameter (downlink path loss) used by the second transmission power.
  • the path loss parameter used by the second transmit power before T2 is the direct link path loss, so the RSRP measurement result of the direct link measured between T0' and T2
  • the second RSRP filter is used for filtering to obtain the RSRP of the first continuous link.
  • the path loss parameter used for the first transmit power after T2 is the downlink path loss. Therefore, the RSRP measurement results of the direct link measured between T2 and T2' are filtered using the first RSRP filter to obtain the second Direct link RSRP.
  • the V2X receiving end reports the first direct link RSRP and the second direct link RSRP to the V2X sending end.
  • the V2X sender receives the RSRP of the first direct link and the RSRP of the second direct link reported by the V2X receiver.
  • the V2X sender calculates the path loss of the first direct link according to the RSRP of the first direct link, and calculates the path loss of the second direct link according to the RSRP of the second direct link.
  • the V2X transmitting end may select one of the path loss of the first direct link and the path loss of the second direct link as a parameter for calculating the new first transmit power. For example, a larger direct link path loss is selected as one of the parameters for calculating the new transmission power, or a smaller direct link path loss is selected as one of the parameters for calculating the new transmission power.
  • a corresponding weighting coefficient may be assigned to the direct link loss corresponding to each measurement window, and the result of the weighted summation of the multiple direct link loss is used as one of the parameters for calculating the new first transmit power.
  • the transmit power may have changed more than once, because the V2X receiving end can also report the measurement window information corresponding to the RSRP of the first direct link and the measurement window corresponding to the RSRP of the second direct link If the information changes multiple times, the measurement window information corresponding to multiple direct link RSRP can be reported.
  • the corresponding weighting coefficient can be assigned or preset. The result obtained after the weighted summation of the path losses of the two direct links is used as one of the parameters for calculating the new first transmit power.
  • the V2X receiving end can be notified in time when the transmit power of the V2X transmitting end changes, so that the V2X receiving end can measure the direct link before and after the change.
  • the RSRP of the road is reported to the V2X sender.
  • the V2X transmitter can obtain the accurate RSRP of the direct link before and after the change in the transmit power, so as to accurately calculate the direct link path loss, and ensure that the calculated transmit power can meet the power control requirements.
  • FIG. 7 shows a block diagram of the RSRP measurement device for a direct link according to an embodiment of the present disclosure. As shown in Figure 7, the device can be applied to the V2X transmitter, and the measurement device can include:
  • the configuration module 71 is configured to obtain the measurement information of the downlink RSRP and configure the measurement information of the direct link RSRP of the V2X sender, where the measurement information of the downlink RSRP includes a first measurement period and a first time domain start position And one or more of the end position, the measurement information of the direct link RSRP includes one or more of the second measurement period, the second time domain start position, and the end position;
  • the time period from the start position to the end position of the first time domain is a first measurement period
  • the time period from the start position to the end position of the second time domain is a second measurement period
  • the first measurement period is N times the second measurement period, and the first time domain start position is aligned with N consecutive second time domain start positions or the first time domain end position is aligned with N consecutive second time domains.
  • the end position of the time domain is aligned, where N is a positive integer.
  • the multiple of the first measurement period relative to the second measurement period is predefined.
  • the measurement information of the downlink RSRP further includes a filter coefficient in a first measurement period
  • the measurement information of the direct link RSRP further includes a filter coefficient in a second measurement period
  • the filter coefficient in the second measurement period is related to the filter coefficient in the first measurement period.
  • the filter coefficient in the second measurement period is the same as the filter coefficient in the first measurement period.
  • the filter coefficient in the second measurement period includes a filter coefficient corresponding to each measurement result of the RSRP of the directly connected link in the second measurement period.
  • the V2X sender configures the RSRP measurement information of the direct link through the direct link radio resource control RRC.
  • the direct link is a link between a V2X sending end and a V2X receiving end.
  • the present disclosure also provides an RSRP measurement device for a direct link, the device is applied to a V2X transmitter, and the device includes:
  • the instruction module 72 is used to compare the currently determined first transmit power with the current second transmit power determined most recently. If the first transmit power is different from the second transmit power, send instruction information to the V2X receiving end to indicate Report the RSRP of the first direct link and the RSRP of the second direct link to the V2X sender;
  • the first direct link RSRP is the direct link RSRP before the transmit power change
  • the second direct link RSRP is the direct link RSRP after the transmit power change.
  • the first transmit power and the second transmit power are both Is the transmit power of the V2X transmitter.
  • the indication information includes one or both of a path loss parameter used by the first transmission power and a path loss parameter used by the second transmission power.
  • the indication information includes one or both of the direct link path loss identifier of the V2X transmitter and the downlink path loss identifier of the V2X transmitter.
  • the indication information includes the time when the transmission power of the V2X transmitting end changes.
  • the indication information is carried by direct link RRC signaling, or carried by direct link MAC CE, or carried by direct link control information SCI.
  • the device further includes:
  • the path loss calculation module 73 is configured to calculate the path loss of the first direct link according to the RSRP of the first direct link and the RSRP of the second direct link respectively after receiving the RSRP of the first direct link and the second direct link
  • the link RSRP calculates the path loss of the second direct link.
  • the device further includes:
  • the power calculation module 74 is configured to calculate a third transmission power according to the path loss of the first direct link and the path loss of the second direct link, and determine a new transmission power according to the third transmission power and the first transmission power.
  • Fig. 8 shows a block diagram of an RSRP measurement device for a direct link according to an embodiment of the present disclosure. As shown in FIG. 8, the device is applied to the V2X receiving end, and the device includes:
  • the RSRP calculation module 81 is configured to calculate the RSRP of the first direct link and the RSRP of the second direct link after receiving the indication information.
  • the RSRP of the first direct link is the RSRP of the direct link before the transmit power change.
  • the second direct link RSRP is the direct link RSRP after the transmission power has changed; the indication information is used to indicate that the transmission power has changed;
  • the first reporting module 82 is configured to report the RSRP of the first direct link and the RSRP of the second direct link.
  • the indication information includes one or both of a path loss parameter used by the first transmission power and a path loss parameter used by the second transmission power.
  • the RSRP of the first direct link is calculated based on the RSRP of the direct link before the instruction information is received, and the RSRP of the second direct link is calculated based on the received The direct link RSRP after the indication information is calculated.
  • the indication information includes a direct link path loss identifier and a downlink path loss identifier.
  • the device further includes:
  • the second reporting module 83 is configured to report link information corresponding to the RSRP of the first direct link and the RSRP of the second direct link;
  • the third reporting module 84 is configured to report the measurement window information corresponding to the RSRP of the first direct link and the measurement window information corresponding to the RSRP of the second direct link.
  • the V2X receiving end maintains two or more sets of RSRP filters, at least one set of the first RSRP filter is related to the downlink path loss, and at least one set of the second RSRP filter is related to the direct link Road loss is related.
  • the path loss parameter adopted by the first transmit power is the downlink path loss
  • the first RSRP filter is used to filter the measured RSRP measurement result of the directly connected link
  • the path loss parameter adopted by the first transmit power is the direct link path loss
  • the second RSRP filter is used to filter the measured RSRP measurement result of the direct link.
  • Fig. 9 is a block diagram showing a device 800 for RSRP measurement of a direct link according to an exemplary embodiment.
  • the device 800 may be a vehicle, a mobile phone, a computer, a digital broadcasting terminal, a messaging device, a game console, a tablet device, a medical device, a fitness device, a personal digital assistant, etc.
  • the device 800 may include one or more of the following components: a processing component 802, a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, And the communication component 816.
  • a processing component 802 a memory 804, a power component 806, a multimedia component 808, an audio component 810, an input/output (I/O) interface 812, a sensor component 814, And the communication component 816.
  • the processing component 802 generally controls the overall operations of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 802 may include one or more processors 820 to execute instructions to complete all or part of the steps of the foregoing method.
  • the processing component 802 may include one or more modules to facilitate the interaction between the processing component 802 and other components.
  • the processing component 802 may include a multimedia module to facilitate the interaction between the multimedia component 808 and the processing component 802.
  • the memory 804 is configured to store various types of data to support the operation of the device 800. Examples of such data include instructions for any application or method operating on the device 800, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 804 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable and Programmable read only memory (EPROM), programmable read only memory (PROM), read only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable and Programmable read only memory
  • PROM programmable read only memory
  • ROM read only memory
  • magnetic memory flash memory
  • flash memory magnetic disk or optical disk.
  • the power supply component 806 provides power for various components of the device 800.
  • the power supply component 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the device 800.
  • the multimedia component 808 includes a screen that provides an output interface between the device 800 and the user.
  • the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from the user.
  • the touch panel includes one or more touch sensors to sense touch, sliding, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure related to the touch or slide operation.
  • the multimedia component 808 includes a front camera and/or a rear camera. When the device 800 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera can receive external multimedia data. Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 810 is configured to output and/or input audio signals.
  • the audio component 810 includes a microphone (MIC), and when the device 800 is in an operation mode, such as a call mode, a recording mode, and a voice recognition mode, the microphone is configured to receive external audio signals.
  • the received audio signal may be further stored in the memory 804 or transmitted via the communication component 816.
  • the audio component 810 further includes a speaker for outputting audio signals.
  • the I/O interface 812 provides an interface between the processing component 802 and a peripheral interface module.
  • the above-mentioned peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include, but are not limited to: home button, volume button, start button, and lock button.
  • the sensor component 814 includes one or more sensors for providing the device 800 with various aspects of status assessment.
  • the sensor component 814 can detect the open/close state of the device 800 and the relative positioning of the components.
  • the component is the display and the keypad of the device 800.
  • the sensor component 814 can also detect the position change of the device 800 or a component of the device 800. , The presence or absence of contact between the user and the device 800, the orientation or acceleration/deceleration of the device 800, and the temperature change of the device 800.
  • the sensor component 814 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact.
  • the sensor component 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.
  • the communication component 816 is configured to facilitate wired or wireless communication between the device 800 and other devices.
  • the device 800 can access a wireless network based on a communication standard, such as WiFi, 2G, or 3G, or a combination thereof.
  • the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 816 further includes a near field communication (NFC) module to facilitate short-range communication.
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the apparatus 800 may be implemented by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing equipment (DSPD), programmable logic devices (PLD), field programmable A gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • ASIC application specific integrated circuits
  • DSP digital signal processors
  • DSPD digital signal processing equipment
  • PLD programmable logic devices
  • FPGA field programmable A gate array
  • controller microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • a non-volatile computer-readable storage medium such as a memory 804 including computer program instructions, which can be executed by the processor 820 of the device 800 to complete the foregoing method.
  • the present disclosure may be a system, method and/or computer program product.
  • the computer program product may include a computer-readable storage medium loaded with computer-readable program instructions for enabling a processor to implement various aspects of the present disclosure.
  • the computer-readable storage medium may be a tangible device that can hold and store instructions used by the instruction execution device.
  • the computer-readable storage medium may be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the foregoing.
  • Non-exhaustive list of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM) Or flash memory), static random access memory (SRAM), portable compact disk read-only memory (CD-ROM), digital versatile disk (DVD), memory stick, floppy disk, mechanical encoding device, such as a printer with instructions stored thereon
  • RAM random access memory
  • ROM read-only memory
  • EPROM erasable programmable read-only memory
  • flash memory flash memory
  • SRAM static random access memory
  • CD-ROM compact disk read-only memory
  • DVD digital versatile disk
  • memory stick floppy disk
  • mechanical encoding device such as a printer with instructions stored thereon
  • the computer-readable storage medium used here is not interpreted as the instantaneous signal itself, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through waveguides or other transmission media (for example, light pulses through fiber optic cables), or through wires Transmission of electrical signals.
  • the computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to various computing/processing devices, or downloaded to an external computer or external storage device via a network, such as the Internet, a local area network, a wide area network, and/or a wireless network.
  • the network may include copper transmission cables, optical fiber transmission, wireless transmission, routers, firewalls, switches, gateway computers, and/or edge servers.
  • the network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network, and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing/processing device .
  • the computer program instructions used to perform the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state setting data, or in one or more programming languages.
  • Source code or object code written in any combination, the programming language includes object-oriented programming languages such as Smalltalk, C++, etc., and conventional procedural programming languages such as "C" language or similar programming languages.
  • Computer-readable program instructions can be executed entirely on the user's computer, partly on the user's computer, executed as a stand-alone software package, partly on the user's computer and partly executed on a remote computer, or entirely on the remote computer or server carried out.
  • the remote computer can be connected to the user's computer through any kind of network-including a local area network (LAN) or a wide area network (WAN), or it can be connected to an external computer (for example, using an Internet service provider to connect to the user's computer) connection).
  • LAN local area network
  • WAN wide area network
  • an electronic circuit such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), can be customized by using the status information of the computer-readable program instructions.
  • FPGA field programmable gate array
  • PDA programmable logic array
  • the computer-readable program instructions are executed to realize various aspects of the present disclosure.
  • These computer-readable program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, thereby producing a machine that makes these instructions when executed by the processor of the computer or other programmable data processing device , A device that implements the functions/actions specified in one or more blocks in the flowcharts and/or block diagrams is produced. It is also possible to store these computer-readable program instructions in a computer-readable storage medium. These instructions make computers, programmable data processing apparatuses, and/or other devices work in a specific manner. Thus, the computer-readable medium storing the instructions includes An article of manufacture, which includes instructions for implementing various aspects of the functions/actions specified in one or more blocks in the flowcharts and/or block diagrams.
  • each block in the flowchart or block diagram may represent a module, program segment, or part of an instruction, and the module, program segment, or part of an instruction contains one or more components for realizing the specified logical function.
  • Executable instructions may also occur in a different order than the order marked in the drawings. For example, two consecutive blocks can actually be executed substantially in parallel, or they can sometimes be executed in the reverse order, depending on the functions involved.
  • each block in the block diagram and/or flowchart, and the combination of the blocks in the block diagram and/or flowchart can be implemented by a dedicated hardware-based system that performs the specified functions or actions Or it can be realized by a combination of dedicated hardware and computer instructions.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé et un appareil de mesure de puissance de réception de signal de référence (RSRP) d'une liaison directe. Le procédé comprend : selon des informations de mesure de la RSRP d'une liaison descendante, la configuration d'informations de mesure pour la RSRP d'une liaison directe d'une extrémité d'émission V2X, la configuration de la période de mesure pour la RSRP de la liaison descendante sous la forme d'un multiple entier de la période de mesure pour la RSRP de la liaison directe, et l'alignement de la position de début de la période de mesure pour la RSRP d'une ou de plusieurs liaisons directes de l'extrémité d'émission V2X sur la position de début de la période de mesure pour la RSRP de la liaison descendante, ou l'alignement de la position de fin de la période de mesure pour la RSRP d'une ou de plusieurs liaisons directes de l'extrémité d'émission V2X sur la position de fin de la période de mesure pour la RSRP de la liaison descendante. Le procédé de mesure de la présente invention permet de garantir que la puissance d'émission de l'extrémité d'émission V2X reste inchangée pendant la période de mesure pour la RSRP d'une liaison directe, ce qui permet d'assurer la précision du résultat de mesure de la RSRP de la liaison directe.
PCT/CN2020/116151 2019-09-30 2020-09-18 Procédé et appareil de mesure de puissance de réception de signal de référence (rsrp) de liaison directe Ceased WO2021063195A1 (fr)

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