CN111479281A - Cell measurement method and device, storage medium and terminal - Google Patents
Cell measurement method and device, storage medium and terminal Download PDFInfo
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- CN111479281A CN111479281A CN202010268005.8A CN202010268005A CN111479281A CN 111479281 A CN111479281 A CN 111479281A CN 202010268005 A CN202010268005 A CN 202010268005A CN 111479281 A CN111479281 A CN 111479281A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
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Abstract
A cell measurement method and device, a storage medium and a terminal are provided, the method comprises the following steps: for each measurement frequency point for receiving cell measurement data, a preset antenna of a terminal is used as a main measurement antenna, and a part of receiving antennas are selected from the rest receiving antennas except the main measurement antenna as auxiliary measurement antennas; adopting the main measuring antenna and the auxiliary measuring antenna to receive the cell measuring data of the frequency point until reaching the preset measuring times, and reselecting the auxiliary measuring antenna according to the preset sequence when receiving the cell measuring data of the frequency point each time; and reselecting the main measurement antenna of the frequency point in the receiving antenna of the terminal after finishing the cell measurement data of the preset measurement times of the frequency point, recording the main measurement antenna as an updated main measurement antenna, and receiving the cell measurement data at the frequency point by adopting the updated main measurement antenna and the updated auxiliary measurement antenna. The invention can reduce the write/read data volume of DDR.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a cell measurement method and apparatus, a storage medium, and a terminal.
Background
In the prior art, because the polarization directions of the transmitting antennas of the base station are different, and the receiving angles of the antennas of the base station and the terminal are also different, the difference between 4 groups of measurement values measured by using 4 receiving antennas of a New Radio, NR (NR) terminal (User Equipment, UE) for the same cell may be very large, which also indicates that X (X <4) antennas among the 4 antennas of the NR terminal are fixedly selected for cell measurement, and the mobility performance is completely unable to be guaranteed.
However, when 4 receiving antennas are used for cell measurement, the amount of time domain Data that needs to be stored offline is large, the requirement on the write/read bus bandwidth of a Double Data Rate (DDR) is too high, which easily causes the problem that hardware pipeline of a measurement accelerator is interrupted and the processing capability is reduced, and particularly, in high-speed service, the problem of processing delay of other service modules may occur due to the large Data amount write/read of DDR by NR cell measurement.
There is a need for a cell measurement method that can reduce the write/read data amount of DDR and reduce the processing delay for other service modules.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a cell measurement method and apparatus, a storage medium, and a terminal, which can reduce the write/read data amount of DDR, reduce the processing delay for other service modules, and continuously select an appropriate receiving antenna, thereby maintaining the mobility performance while reducing the number of receiving antennas.
To solve the above technical problem, an embodiment of the present invention provides a cell measurement method, including the following steps: for each measurement frequency point for receiving cell measurement data, a preset antenna of a terminal is used as a main measurement antenna, and a part of receiving antennas are selected from the rest receiving antennas except the main measurement antenna as auxiliary measurement antennas; adopting the main measuring antenna and the auxiliary measuring antenna to receive the cell measuring data of the frequency point until reaching the preset measuring times, and reselecting the auxiliary measuring antenna according to the preset sequence when receiving the cell measuring data of the frequency point each time; and reselecting the main measuring antenna of the frequency point in the receiving antenna of the terminal after finishing the cell measuring data of the preset measuring times of the frequency point, recording the main measuring antenna as an updated main measuring antenna, selecting a part of receiving antennas from other receiving antennas except the updated main measuring antenna as updated auxiliary measuring antennas of the frequency point, and receiving the cell measuring data by adopting the updated main measuring antenna and the updated auxiliary measuring antennas at the frequency point, wherein the updated auxiliary measuring antennas are reselected according to a preset order when receiving the cell measuring data every time.
Optionally, before the primary measuring antenna and the secondary measuring antenna are used to receive the cell measurement data of the frequency point, the cell measurement method further includes: determining whether the measurement frequency point needs an antenna time-sharing receiving function; and the antenna time-sharing receiving function is used for receiving the cell measurement data by adopting the main measurement antenna and the auxiliary measurement antenna.
Optionally, the determining whether the measurement frequency needs to support an antenna time-sharing receiving function includes: determining a list of measurement frequency points; and for each measurement frequency point in the measurement frequency point list, if the measurement reference signal of the measurement frequency point contains SSB and CSI-RS, determining that the measurement frequency point needs to support an antenna time-sharing receiving function.
Optionally, determining that the current measurement frequency point for cell measurement needs to support the antenna time-sharing receiving function includes: determining a list of measurement frequency points; for each measurement frequency point in the measurement frequency point list, if a measurement reference signal of the measurement frequency point only contains SSB and the data volume of the SSB received in unit time is greater than a first preset data volume threshold, determining that the measurement frequency point needs to support an antenna time-sharing receiving function; or, for each measurement frequency point in the measurement frequency point list, if the measurement reference signal of the measurement frequency point only contains the CSI-RS and the data volume for receiving the CSI-RS in unit time is greater than a second preset data volume threshold, determining that the measurement frequency point needs to support an antenna time-sharing receiving function.
Optionally, determining whether the measurement frequency needs to support an antenna time-sharing receiving function includes: determining a preset zone bit of the measurement frequency point; and determining whether the measurement frequency point needs to support the antenna time-sharing receiving function or not according to the bit value of the preset flag bit.
Optionally, after determining whether the measurement frequency needs to support an antenna time division reception function, the cell measurement method further includes: and if the measurement frequency point needs to support the antenna time-sharing receiving function, determining whether to trigger the antenna time-sharing receiving function.
Optionally, the determining whether to trigger the antenna time-sharing receiving function includes: and if the actual used bandwidth of the current DDR is larger than a preset bandwidth threshold, determining to trigger the antenna time-sharing receiving function.
Optionally, the measurement frequency points are sequentially selected from a preset measurement frequency point list.
Optionally, the number of the receiving antennas of the terminal is 4, and the number of the auxiliary measuring antennas is 1; the auxiliary measuring antenna selected from the other receiving antennas except the main measuring antenna meets one or more of the following conditions:
Sn＝S3k+m＝{Rxbest,Rxx}；
S1∪S2∪S3＝S；
Si∩Sj＝Sbest＝{Rxbest}；
Si！＝Sj；
where S is used to indicate 4 sets of receive antennas S ═ { Rx0，Rx1，Rx2，Rx3}, Rx0, Rx1, Rx2 and Rx3 are used to denote 4 antennas, SiFor indicating the ith reception, S, of said frequency pointjFor indicating the j-th reception, Rx, of said frequency pointbestMain test antenna, Rx, for representing said frequency pointsxAuxiliary test antenna for indicating the frequency point selection according to a preset order, SnFor indicating the set of receiving antennas, S, to be used at each time of the frequency points3k+mUsed for representing the mth reception of the kth round of the frequency point.
Optionally, the reselecting the main measurement antenna of the frequency point in the receiving antennas of the terminal after finishing the cell measurement data of the preset measurement times of the frequency point comprises determining, for each receiving antenna, an antenna measurement value of the cell measurement data of the preset measurement times of the frequency point, performing L1 smooth filtering on the antenna measurement value of each receiving antenna to obtain an antenna filtering value of each receiving antenna, and reselecting the main measurement antenna of the frequency point in the receiving antennas of the terminal according to the antenna filtering value.
Optionally, the antenna measurements are selected from one or more of: RSRP, RSRQ, and SNR.
Optionally, the antenna measurement value is a single parameter; according to the antenna filtering value, reselecting the main antenna of the frequency point in the receiving antenna of the terminal comprises the following steps: and comparing the antenna filtering values of all the receiving antennas, and determining the antenna with the largest antenna filtering value as the reselected main measurement antenna.
Optionally, the antenna measurement value is a plurality of parameters; according to the antenna filtering value, reselecting the main antenna of the frequency point in the receiving antenna of the terminal comprises the following steps: weighting and summing the antenna filtering values of the multiple parameters of each receiving antenna to obtain weighted filtering values; and comparing the weighted filtering values of all the receiving antennas, and determining the antenna with the largest weighted filtering value as the reselected main measurement antenna.
Optionally, the cell measurement method further includes: for each receiving antenna, combining the antenna measurement values of the cell measurement data with the preset measurement times, and then reporting to a high layer; and clearing the measurement times of the antenna measurement values of each receiving antenna.
Optionally, only the cell measurement data received by the main measurement antenna and the auxiliary measurement antenna of the frequency point are processed.
To solve the above technical problem, an embodiment of the present invention provides a cell measurement apparatus, including: the antenna selection module is used for adopting a preset antenna of the terminal as a main measurement antenna for each measurement frequency point for receiving cell measurement data, and selecting a part of receiving antennas from the rest receiving antennas except the main measurement antenna as auxiliary measurement antennas; the measurement module is used for receiving the cell measurement data of the frequency point by adopting the main measurement antenna and the auxiliary measurement antenna until the preset measurement times are reached, and reselecting the auxiliary measurement antenna according to a preset sequence when receiving the cell measurement data of the frequency point each time; and the antenna reselection module is used for reselecting the main measurement antenna of the frequency point in the receiving antenna of the terminal after finishing the cell measurement data of the preset measurement times of the frequency point, recording the main measurement antenna as an updated main measurement antenna, selecting a part of receiving antennas from the rest receiving antennas except the updated main measurement antenna as updated auxiliary measurement antennas of the frequency point, receiving the cell measurement data by adopting the updated main measurement antenna and the updated auxiliary measurement antennas at the frequency point, and reselecting the updated auxiliary measurement antennas according to a preset sequence when receiving the cell measurement data every time.
To solve the above technical problem, an embodiment of the present invention provides a storage medium having a computer program stored thereon, where the computer program is executed by a processor to perform the steps of the above cell measurement method.
In order to solve the above technical problem, an embodiment of the present invention provides a terminal, including a memory and a processor, where the memory stores a computer program capable of running on the processor, and the processor executes the steps of the cell measurement method when running the computer program.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
in the embodiment of the invention, the preset antenna of the terminal is used as the main measuring antenna, and one part of the receiving antennas is selected from the other receiving antennas except the main measuring antenna as the auxiliary measuring antenna. Furthermore, after cell measurement data of preset measurement times are completed, a main measurement antenna is reselected from the receiving antennas of the terminal, and compared with the method that the number of the receiving antennas is directly reduced and a part of the receiving antennas are fixed for processing in the prior art, the scheme of the embodiment of the invention can continuously select the proper receiving antennas, and the number of the receiving antennas is reduced while the mobility performance is maintained.
Further, before the cell measurement data is received by the main measurement antenna and the auxiliary measurement antenna, the method also comprises the step of determining whether the measurement frequency point needs an antenna time-sharing receiving function, and whether the antenna time-sharing receiving function is triggered can be determined only when the antenna time-sharing receiving function is needed, so that when the received data volume is small, a scheme of time-sharing receiving is not adopted, and better communication performance is obtained.
And reselecting a main antenna among the receiving antennas of the terminal according to the antenna filtering value, wherein the antenna with the best received signal quality is selected as the main antenna through the step of setting L1 smooth filtering, thereby reducing the number of the receiving antennas and maintaining better communication performance.
Furthermore, only the cell measurement data received by the main measurement antenna and the auxiliary measurement antenna are processed, so that the data processing pressure of processing hardware can be reduced.
Drawings
Fig. 1 is a flowchart of a cell measurement method according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for determining that a current measurement frequency point for cell measurement needs to support an antenna time-sharing reception function in an embodiment of the present invention;
fig. 3 is a schematic view of an application scenario of a cell measurement method according to an embodiment of the present invention;
FIG. 4 is a flowchart of one embodiment of step S13 of FIG. 1;
fig. 5 is a flowchart of another cell measurement method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a cell measurement apparatus according to an embodiment of the present invention.
Detailed Description
As described above, in the prior art, when a plurality of receiving antennas (e.g. 4 receiving antennas) are used for cell measurement, the amount of time domain data that needs to be stored offline is large, the requirement on the write/read bus bandwidth of the DDR is too high, which easily causes the problem that hardware pipeline of the measurement accelerator is interrupted, and the processing capability is reduced, and particularly in high-speed service, the problem of processing delay of other service modules may occur due to the large data amount write/read of the DDR by NR cell measurement.
In particular, memory bandwidth is the rate at which a processor can read data from or store data to a semiconductor memory, typically expressed in bytes/second.
A plurality of processors can simultaneously perform hardware read-write access on a DDR memory of the NR terminal, and if the data volume of the DDR instantaneous read-write access exceeds the DDR memory bandwidth, certain hardware read-write access is delayed; if the DDR read-write access efficiency of the time sequence sensitive service is low, performance problems such as reduction of the throughput rate of the terminal and the like can be caused, and a pause phenomenon can be caused seriously.
The inventor of the present invention finds, through research, that in a specific embodiment of the prior art, neighboring cell measurement all uses an online (online) processing mode like a serving cell, and does not cache data to a DDR offline, and although there is no requirement for the bandwidth of the DDR, measurement signals crossing slots appearing in some cells cannot be measured; it is also unacceptable for asynchronous networks.
In another specific embodiment of the prior art, the DDR is cached offline by using neighbor measurement, which generally means an increase in hardware cost due to the requirement on the bandwidth of the DDR; for a measurement bandwidth {24, 48, 96, 192, 264} Resource Block (Resource Block, RB) of a channel state Information-Reference Signal Resource (CSI-RS Resource), restriction must be performed; the practical situation is that even if the 15khz is limited to 96 RBs, the bandwidth for writing DDR under the CA of 2CC is 491.52MB/s, the requirement of an Application Specific Integrated Circuit (ASIC) on the DDR reading bandwidth is higher, and the ASIC cannot be pipelined, so that the processing capacity of the accelerator is influenced; if the measurement bandwidth of the CSI-RS is further reduced (e.g., 48 RBs, 10M bandwidth, 15.36M/s sampling rate), the neighbor measurement performance may be affected; after all, the CSI-RS of the serving cell may be measured by full bandwidth reception.
In another specific implementation manner in the prior art, data is cached in a buffer (buffer) inside hardware by limiting a neighbor measurement bandwidth, so that the cost is very high, and the large buffer inside the hardware is generally not also possibly dedicated and needs to be reused with other functional modules, thereby greatly increasing the complexity of hardware design; the trade-off between increasing DDR read-write bandwidth and increasing hardware internal buffer is also only the right and the right on the system, and the inheritance is poor.
In the embodiment of the invention, for each measurement frequency point for receiving cell measurement data, a preset antenna of a terminal is used as a main measurement antenna, and a part of receiving antennas are selected from the other receiving antennas except the main measurement antenna as auxiliary measurement antennas; adopting the main measuring antenna and the auxiliary measuring antenna to receive the cell measuring data of the frequency point until reaching the preset measuring times, and reselecting the auxiliary measuring antenna according to the preset sequence when receiving the cell measuring data of the frequency point each time; and reselecting the main measuring antenna of the frequency point in the receiving antenna of the terminal after finishing the cell measuring data of the preset measuring times of the frequency point, recording the main measuring antenna as an updated main measuring antenna, selecting a part of receiving antennas from other receiving antennas except the updated main measuring antenna as updated auxiliary measuring antennas of the frequency point, and receiving the cell measuring data by adopting the updated main measuring antenna and the updated auxiliary measuring antennas at the frequency point, wherein the updated auxiliary measuring antennas are reselected according to a preset order when receiving the cell measuring data every time. By adopting the scheme, the preset antenna of the terminal is used as the main measuring antenna, and one part of the receiving antennas is selected from the other receiving antennas except the main measuring antenna to be used as the auxiliary measuring antenna. Furthermore, after cell measurement data of preset measurement times are completed, a main measurement antenna is reselected from the receiving antennas of the terminal, and compared with the method that the number of the receiving antennas is directly reduced and a part of the receiving antennas are fixed for processing in the prior art, the scheme of the embodiment of the invention can continuously select the proper receiving antennas, and the number of the receiving antennas is reduced while the mobility performance is maintained.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, fig. 1 is a flowchart of a cell measurement method in an embodiment of the present invention, where the cell measurement method may include steps S11 to S13:
step S11: for each measurement frequency point for receiving cell measurement data, a preset antenna of a terminal is used as a main measurement antenna, and a part of receiving antennas are selected from the rest receiving antennas except the main measurement antenna as auxiliary measurement antennas;
step S12: adopting the main measuring antenna and the auxiliary measuring antenna to receive the cell measuring data of the frequency point until reaching the preset measuring times, and reselecting the auxiliary measuring antenna according to the preset sequence when receiving the cell measuring data of the frequency point each time;
step S13: and reselecting the main measuring antenna of the frequency point in the receiving antenna of the terminal after finishing the cell measuring data of the preset measuring times of the frequency point, recording the main measuring antenna as an updated main measuring antenna, selecting a part of receiving antennas from other receiving antennas except the updated main measuring antenna as updated auxiliary measuring antennas of the frequency point, and receiving the cell measuring data by adopting the updated main measuring antenna and the updated auxiliary measuring antennas at the frequency point, wherein the updated auxiliary measuring antennas are reselected according to a preset order when receiving the cell measuring data every time.
In the specific implementation of step S11, a main measurement antenna and an auxiliary measurement antenna are set at each measurement frequency point, and since the auxiliary measurement antenna is a selected part of the other receiving antennas except the main measurement antenna, the number of the main measurement antenna and the auxiliary measurement antenna is less than the total number of the receiving antennas of the terminal.
In a specific implementation manner of the embodiment of the present invention, the total number of receiving antennas of the terminal is 4, the number of main-test antennas is 1, and the number of auxiliary-test antennas is 1. At the time of first reception, a preset antenna 0 may be adopted as a main antenna.
It should be noted that before the main antenna and the auxiliary antenna are set, or before the main antenna and the auxiliary antenna are used to receive data, a step of determining whether the measurement frequency point needs an antenna time-sharing receiving function may be further included. It can be understood that each measurement frequency point may have an antenna time-sharing receiving function, and it is only necessary to set whether to start the time-sharing receiving function according to specific situations.
Specifically, before the main measuring antenna and the auxiliary measuring antenna are adopted to receive the cell measurement data of the frequency point, the method further includes: determining whether the measurement frequency point needs an antenna time-sharing receiving function; and the antenna time-sharing receiving function is used for receiving the cell measurement data by adopting the main measurement antenna and the auxiliary measurement antenna.
Referring to fig. 2, fig. 2 is a flowchart of a method for determining that a current measurement frequency point for cell measurement needs to support an antenna time-sharing reception function in an embodiment of the present invention. The method may include steps S21 to S22, may further include steps S21 and S23, and may further include steps S21 and S24. The respective steps are explained below.
In a specific implementation of step S12, a list of measurement frequency points is determined.
Specifically, the measurement frequency point list may include a plurality of measurement frequency points for the UE to select, and in specific implementation, the measurement frequency points may be taken according to an order in the list to perform subsequent operations.
Further, the measurement frequency points may be sequentially selected from a preset measurement frequency point list. Therefore, the comprehensiveness of the measuring frequency point can be improved. It should be noted that each measurement frequency point may have its own main measurement antenna and auxiliary measurement antenna, and the antenna selection of different measurement frequency points may not be affected by each other.
In step S22, for each measurement frequency point in the measurement frequency point list, if the measurement reference signal of the measurement frequency point includes an SSB and a CSI-RS, it is determined that the measurement frequency point needs to support an antenna time-sharing reception function.
Specifically, each measurement frequency point can be independently set whether antenna time-sharing reception needs to be supported, and the measurement frequency point can depend on the data size of the measurement reception in unit time. If the data volume received by all receiving antennas of a single terminal is not large, the antennas do not need to be adopted for time-sharing reception, and the setting can be carried out according to the reference signal type and the measurement bandwidth configured by the measurement frequency point.
More specifically, cell measurement of a terminal may be performed by receiving a reference signal of a cell; NR cells perform measurements based on two completely different reference signals, which are synchronization signal Block (SS-Block) and CSI-RS, respectively; the CSI-RS only exists in a service state, and only SS-Block exists in standby.
Further, the fixed bandwidth of the Synchronization Signal (SS)/Physical Broadcast Channel (PBCH) Block is 20 Resource Blocks (RB), the period is {5,10,20,40,80,160} ms, L SS-blocks (numbered 0-L-1) in a window with the length of 5ms constitute 1 SS burst set, wherein the value of L can be determined by frequency points of the cell.
Specifically, NR is used for mobility measurement, the CSI-RS resource has only 1 symbol (symbol) in the time domain, and the frequency domain bandwidth is wide; the time-frequency domain location of the CSI-RS Resource is defined in Table (Table)7.4.1.5.3-1 of 38.211, where Row (Row)1 and Row2 are used for Radio Resource Management (RRM) mobility measurement. The CSI-RS for mobility measurement is configured by Radio Resource Control (RRC) signaling, and it can be seen that the bandwidth is at least 24 RBs and can reach 264 RBs at most, and the number of REs in each RB is 1 or 3 (density is 1 or 3). Referring to a communication protocol (38.214, 5.1.6.1.3), CSI-RS resources used for mobility measurement are 96 under each frequency point at most; the time and frequency domain positions of the resources are configured independently, and the period value range is {4,5,10,20,40} ms.
In the embodiment of the invention, when the measurement reference signal of the measurement frequency point contains the SSB and the CSI-RS, the situation that the received data volume is large can be judged, a time-sharing receiving scheme needs to be adopted, and better communication performance is obtained by setting a small number of antennas to receive data.
In step S23, for each measurement frequency point in the measurement frequency point list, if the measurement reference signal of the measurement frequency point only contains SSB and the data volume of the SSB received in unit time is greater than a first preset data volume threshold, it is determined that the measurement frequency point needs to support an antenna time-sharing receiving function.
Specifically, the SSB frequency domain is configured to receive 20 RBs fixedly, and for a Subcarrier spacing (SCS) of 15khz, the data amount in a unit time is not large (even if the total data amount is large, it is often due to receiving time domain data for a long time, for example, 5ms), and generally there is no need for antenna time division reception; however, the data amount per unit time is doubled for 30khz SCS and doubled for 60khz SCS, so it is necessary to determine whether to turn on the antenna time-sharing receiving function according to specific situations.
In the embodiment of the present invention, by setting the data volume of the SSB to be greater than the first preset data volume threshold, it may be determined that a time-sharing reception scheme needs to be adopted for the case where the received data volume is determined to be greater, and by setting a smaller number of antennas to receive data, a better communication performance is obtained.
In step S23, for each measurement frequency point in the measurement frequency point list, if the measurement reference signal of the measurement frequency point only includes a CSI-RS, and the data volume for receiving the CSI-RS in unit time is greater than a second preset data volume threshold, it is determined that the measurement frequency point needs to support an antenna time-sharing receiving function.
Specifically, the frequency domain bandwidth of the CSI-RS is at least 24 RBs, and whether to start the antenna time-sharing receiving function needs to be determined according to specific situations.
In the embodiment of the invention, the data volume of the CSI-RS received in unit time is set to be larger than the second preset data volume threshold, so that a scheme of time-sharing reception can be determined to be adopted for the condition that the received data volume is judged to be larger, and better communication performance can be obtained by setting less antennas to receive data.
Further, the step of determining whether the measurement frequency needs to support the antenna time-sharing receiving function may include: determining a preset zone bit of the measurement frequency point; and determining whether the measurement frequency point needs to support the antenna time-sharing receiving function or not according to the bit value of the preset flag bit.
Specifically, after determining whether the antenna time sharing needs to be supported for each measurement frequency point by using the method shown in fig. 2, a preset flag bit of each measurement frequency point may be flagged, for example, a preset number of bits are used, and when the bit value is 1, antenna time sharing reception needs to be set as required, and when the bit value is 0, antenna time sharing reception does not need to be set as not required.
In the embodiment of the invention, whether the measurement frequency point needs to support the antenna time-sharing receiving function or not is determined by setting the bit value according to the preset flag bit, so that the accuracy and convenience of determination can be effectively improved.
Further, after determining whether the measurement frequency needs to support an antenna time division reception function, the cell measurement method may further include: and if the measurement frequency point needs to support the antenna time-sharing receiving function, determining whether to trigger the antenna time-sharing receiving function.
Specifically, the frequency points supporting time-sharing reception of the antenna are set, and actually, the frequency points are not necessarily time-sharing reception, or can be triggered according to an actual scene; e.g., low rate data traffic, may not be triggered.
Further, the step of determining whether to trigger the antenna time division receiving function may include: and if the actual used bandwidth of the current DDR is larger than a preset bandwidth threshold, determining to trigger the antenna time-sharing receiving function. The low-rate data service can be determined by the step of comparing the actual bandwidth used by the current DDR with the preset bandwidth threshold, so that the time-sharing receiving function of the antenna is determined not to be triggered.
In the embodiment of the invention, before the cell measurement data is received by the main measurement antenna and the auxiliary measurement antenna, the method further comprises the step of determining whether the measurement frequency point needs the antenna time-sharing receiving function, and whether the antenna time-sharing receiving function is triggered can be determined only when the antenna time-sharing receiving function is needed, so that when the received data volume is small, a time-sharing receiving scheme is not adopted, and better communication performance is obtained.
With reference to fig. 1, in a specific implementation of step S12, each time the measurement frequency point is reached, the auxiliary measurement antenna is reselected, and the main measurement antenna and the auxiliary measurement antenna are used to receive the cell measurement data of the frequency point.
Referring to fig. 3, fig. 3 is a schematic view of an application scenario of a cell measurement method according to an embodiment of the present invention.
As shown in fig. 3, the number of receiving antennas of the terminal may be 4, the number of main antennas may be 1, and the number of auxiliary antennas may be 1; the auxiliary measuring antenna selected from the other receiving antennas except the main measuring antenna can meet one or more of the following conditions:
Sn＝S3k+m＝{Rxbest,Rxx}；
S1∪S2∪S3＝S；
Si∩Sj＝Sbest＝{Rxbest}；
Si！＝Sj；
where S is used to indicate 4 sets of receive antennas S ═ { Rx0，Rx1，Rx2，Rx3}, Rx0, Rx1, Rx2 and Rx3 are used to denote 4 antennas, SiFor indicating the ith reception, S, of said frequency pointjFor indicating the j-th reception, Rx, of said frequency pointbestMain test antenna, Rx, for representing said frequency pointsxAuxiliary test antenna for indicating the frequency point selection according to a preset order, SnFor indicating the set of receiving antennas, S, to be used at each time of the frequency points3k+mUsed for representing the mth reception of the kth round of the frequency point.
Specifically, 4 antenna sets S ═ { Rx ═ Rx of data reception of measurement frequency points0，Rx1，Rx2，Rx3The data reception, storage and processing can be completed in 3 times, and the antenna set used for arbitrary nth data reception, storage and processing selection can be Sn＝S3k+m＝{Rxbest,Rxx}。
The measuring frequency point can press S again after each continuous 3 times of receiving, storing and processingiAnd carrying out a new round of receiving, storing and processing.
As a non-limiting example, the measurement data of the frequency point may be selected to be that the antenna 0 is the dominant antenna, and then the antenna S is the antenna1＝{Rx0,Rx1}、S2＝{Rx0,Rx2}、S3＝{Rx0,Rx3And performing time-sharing reception for 3 times, acquiring the measured values of 4 antennas by the measuring frequency point through data reception for 3 times, wherein the sampling period of the main antenna is the data receiving period, and the sampling periods of other antennas are 3 times that of the main antenna.
In the embodiment of the present invention, after receiving data for a preset number of times, the next step may be performed, for example, L1 filtering (filter) is performed on the sampling points of 4 antennas to obtain the antenna measurement value of the antenna.
Referring to fig. 4, fig. 4 is a flowchart of an embodiment of step S13 in fig. 1. The step of reselecting the main measurement antenna of the frequency point from the receiving antennas of the terminal after the cell measurement data of the preset number of times of measurement of the frequency point is completed may include steps S41 to S43, and the following steps are described.
In step S41, an antenna measurement value of the cell measurement data of the preset number of measurements at the frequency point may be determined for each receiving antenna.
Further, the antenna measurements may be selected from one or more of: reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), and Signal to Noise Ratio (SNR).
Further, the step of reselecting the main measurement antenna of the frequency point from the receiving antennas of the terminal according to the antenna filtering value may include: and comparing the antenna filtering values of all the receiving antennas, and determining the antenna with the largest antenna filtering value as the reselected main measurement antenna.
In step S42, L1 smooth filtering may be performed on the antenna measurement value of each receiving antenna to obtain an antenna filtered value of each receiving antenna.
Specifically, after each measurement frequency point receives data for a preset time, a measurement reporting period is achieved. The measurement reporting period may be set by a communication protocol.
Specifically, M of the reception optimum antenna can be taken outiM of one sampling point and other antennasjPhysical layer filtering (L1 filter) is performed on each sampling point to obtain all antenna measurements of all measurement cells at the sampling point, take 4 receiving antennas as an example, where M isi＝3MjAnd 3k, (i! j), and the physical layer L1 filter coefficients of the main antenna and the auxiliary antenna are different because the sampling period of the auxiliary antenna is 3 times of that of the main antenna.
In step S43, a main antenna of the frequency point may be reselected from receiving antennas of the terminal according to the antenna filter value.
In a specific implementation manner of the embodiment of the present invention, the antenna measurement value may be a single parameter; step S43 may include: and comparing the antenna filtering values of all the receiving antennas, and determining the antenna with the largest antenna filtering value as the reselected main measurement antenna.
For example, in a non-limiting embodiment, the receiving antenna with the strongest RSRP measurement value of the strongest cell may be selected, that is, the antenna measurement value may be a single parameter RSRP.
In the embodiment of the invention, by setting a single parameter, the judgment complexity can be reduced, and the efficiency of determining the reselected main antenna can be improved.
In another specific implementation manner of the embodiment of the present invention, the antenna measurement value may be a plurality of parameters; step S43 may include: weighting and summing the antenna filtering values of the multiple parameters of each receiving antenna to obtain weighted filtering values; and comparing the weighted filtering values of all the receiving antennas, and determining the antenna with the largest weighted filtering value as the reselected main measurement antenna.
For example, in a non-limiting embodiment, the RSRP measurement value of the strongest cell and the SNR of the strongest cell may be considered, and the difference between the measurement values of the strongest cell and other cells may also be considered.
In the embodiment of the invention, the influence of various parameters can be comprehensively considered by setting the weighted sum of the parameters, so that the accuracy of determining the reselected main measurement antenna is improved.
In the embodiment of the invention, L1 smooth filtering is carried out on the antenna measured value of each receiving antenna to obtain the antenna filtering value of each receiving antenna, the main antenna is reselected from the receiving antennas of the terminal according to the antenna filtering value, and the antenna with the best received signal quality is selected as the main antenna through the step of L1 smooth filtering, so that the number of the receiving antennas is reduced and the better communication performance is kept.
Further, the cell measurement method may further include: for each receiving antenna, combining the antenna measurement values of the cell measurement data with the preset measurement times, and then reporting to a high layer; and clearing the measurement times of the antenna measurement values of each receiving antenna.
Specifically, taking 4 receiving antennas as an example, the physical layer reports the cell measurement value of the high layer, and the 4 antenna measurement values need to be combined; the specific combining strategy may not be limited in the 3GPP protocol, and is generally to select a measurement value of the antenna with the strongest RSRP among the 4 antennas per cell.
In the embodiment of the invention, the steps of combining the antenna measurement values, reporting to a high layer and clearing the measurement times of the antenna measurement values of each receiving antenna are arranged, so that after the data are received for the preset times, the data are reported and a new round of measurement is started, thereby realizing the timeliness of the determination of the main measuring antenna.
Further, the cell measurement method may further include: and only processing the cell measurement data received by the main measurement antenna and the auxiliary measurement antenna of the frequency point.
In a specific implementation, a plurality of receiving antennas may be supported by hardware Radio Frequency (RF), Automatic Gain Control (AGC), Digital front-end (DFE), and measurement Accelerator (ACC) to simultaneously receive data.
Specifically, if the setting does not support the antenna time-sharing reception function, the hardware (RF, AGC, DFE, ACC, etc.) can be configured normally to perform data reception and processing for 4 antennas, and the result software of the measurement accelerator output cell measurement is saved by antenna.
If the function of supporting antenna time-sharing reception is set, whether the current service scene of the terminal needs triggering antenna time-sharing reception or not can be checked, if the triggering is not needed, the software normally configures hardware (RF, AGC, DFE, ACC and the like) to receive and process data of 4 antennas, and the software for outputting the result of cell measurement by the measurement accelerator is stored according to the antennas.
If the antenna time-sharing receiving function needs to be triggered, hardware (RF, AGC, DFE, ACC and the like) can be configured to receive and process data of an optimal antenna and 1 other antenna designated in sequence, and software for outputting cell measurement results by the measurement accelerator is stored according to the designated antenna.
In the embodiment of the invention, the data processing pressure of processing hardware can be reduced by processing only the cell measurement data received by the main measurement antenna and the auxiliary measurement antenna.
Referring to fig. 5, fig. 5 is a flowchart of another cell measurement method according to an embodiment of the present invention. The other cell measurement method may include steps S501 to S522, and the respective steps are described below.
In step S501, it is determined whether the measurement frequency needs to support an antenna time-sharing receiving function.
In step S502, when the determination result is that support is required, step S503 may be performed; on the contrary, when the determination result is that the support is not required, step S505 may be performed.
In step S503, a preset flag is set in the measurement bin.
In step S504, the initial master antenna is set to antenna 0.
In step S505, the measurement frequency points are sequentially selected from a preset measurement frequency point list.
In step S506, it is determined whether the measurement frequency point needs to support the antenna time-sharing receiving function according to a preset flag bit.
In step S507, when the determination result is that support is required, step S508 may be performed; otherwise, when the determination result is that the support is not required, step S510 may be performed.
In step S508, it is determined whether the measurement frequency needs to trigger the antenna time-sharing receiving function.
In step S509, when the determination result is that triggering is required, step S512 may be executed; otherwise, when the determination result is that the trigger is not required, step S510 may be executed.
In step S510, all receiving antennas are configured to receive data.
In step S511, the measurement accelerator acquires reception data of all antennas and processes the data.
In step S512, 1 main antenna and 1 auxiliary antenna are configured to receive data.
In step S513, the measurement accelerator acquires the received data of the selected 2 antennas and processes the data.
In step S514, for each receiving antenna, an antenna measurement value of the cell measurement data of the preset number of measurements at the frequency point is determined.
In step S515, it is checked whether the measurement frequency point reaches a preset reporting period.
In step S516, when the determination result is that reporting is required, step S517 may be executed; otherwise, when the determination result is that the report is not required, step S505 may be executed.
In step S517, the antenna measurement value of each receiving antenna is subjected to L1 smoothing filtering to obtain an antenna filtered value of each receiving antenna.
In step S518, the antenna measurement values are combined for each receiving antenna, and then reported to the higher layer.
In step S519, a main measurement antenna of the frequency point is reselected from the receiving antennas of the terminal according to the antenna filtering value.
In step S520, the number of times of measurement of the antenna measurement value of each receiving antenna is cleared.
In step S521, it is checked whether to continue the cell measurement.
In step S522, when the determination result is that measurement is required, step S505 may be performed; otherwise, when the determination result is that measurement is not needed, the process may be ended.
For more details about steps S501 to S522, please refer to the description of steps in fig. 1 to 4 for execution, which is not described herein again.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a cell measurement apparatus according to an embodiment of the present invention. The cell measurement apparatus may include:
an antenna selection module 61, configured to, for each measurement frequency point used for receiving cell measurement data, use a preset antenna of a terminal as a main measurement antenna, and select a part of receiving antennas from the other receiving antennas except the main measurement antenna as auxiliary measurement antennas;
a measuring module 62, configured to receive the cell measurement data of the frequency point by using the main measuring antenna and the auxiliary measuring antenna until a preset number of times of measurement is reached, and reselect the auxiliary measuring antenna according to a preset sequence each time the cell measurement data of the frequency point is received;
and an antenna reselection module 63, configured to reselect the main measurement antenna of the frequency point among the receiving antennas of the terminal after cell measurement data of the preset measurement times of the frequency point is completed, record the reselected main measurement antenna as an updated main measurement antenna, select a part of receiving antennas from the remaining receiving antennas except the updated main measurement antenna as updated auxiliary measurement antennas of the frequency point, and receive the cell measurement data at the frequency point by using the updated main measurement antenna and the updated auxiliary measurement antennas.
And reselecting the updated auxiliary measuring antenna according to a preset sequence every time the cell measuring data is received.
For the principle, specific implementation and beneficial effects of the cell measurement apparatus, please refer to the related description about the cell measurement method shown in the foregoing and fig. 1 to 5, which is not repeated herein.
It should be noted that the technical solution of the present invention is applicable to a 5G (5Generation) communication system, a 4G communication system, a 3G communication system, and various future new communication systems, such as 6G, 7G, and the like.
Embodiments of the present invention also provide a storage medium having stored thereon computer instructions, which when executed by a processor perform the steps of the above method. The storage medium may be a computer-readable storage medium, and may include, for example, a non-volatile (non-volatile) or non-transitory (non-transitory) memory, and may further include an optical disc, a mechanical hard disk, a solid state hard disk, and the like.
Specifically, in the embodiment of the present invention, the processor may be a Central Processing Unit (CPU), and the processor may also be another general-purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It should also be understood that the memory in the embodiments of the present application may be either volatile memory or non-volatile memory, or may include both volatile and non-volatile memory, wherein the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory the volatile memory may be Random Access Memory (RAM), which serves as external cache memory, such as Static RAM (SRAM), Dynamic RAM (DRAM), synchronous dynamic RAM (synchronous DRAM), Synchronous DRAM (SDRAM), SDRAM L, or DDR SDRAM.
The embodiment of the invention also provides a terminal, which comprises a memory and a processor, wherein the memory is stored with computer instructions capable of running on the processor, and the processor executes the steps of the method when running the computer instructions. The terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer and other terminal devices.
In particular, a terminal in this embodiment may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a remote station, a remote terminal, a Mobile device, a user terminal, a terminal device (terminal equipment), a Wireless communication device, a user agent, or a user equipment, and the terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless local loop (Wireless L cal L oop, abbreviated as W LL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device, or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network, or a terminal device in a future Public land Mobile Network (Public Network L, and Mobile MN L), and the like, and the embodiments are not limited thereto.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (18)
1. A cell measurement method, comprising the steps of:
for each measurement frequency point for receiving cell measurement data, a preset antenna of a terminal is used as a main measurement antenna, and a part of receiving antennas are selected from the rest receiving antennas except the main measurement antenna as auxiliary measurement antennas;
adopting the main measuring antenna and the auxiliary measuring antenna to receive the cell measuring data of the frequency point until reaching the preset measuring times, and reselecting the auxiliary measuring antenna according to the preset sequence when receiving the cell measuring data of the frequency point each time;
and reselecting the main measuring antenna of the frequency point in the receiving antenna of the terminal after finishing the cell measuring data of the preset measuring times of the frequency point, recording the main measuring antenna as an updated main measuring antenna, selecting a part of receiving antennas from other receiving antennas except the updated main measuring antenna as updated auxiliary measuring antennas of the frequency point, and receiving the cell measuring data by adopting the updated main measuring antenna and the updated auxiliary measuring antennas at the frequency point, wherein the updated auxiliary measuring antennas are reselected according to a preset order when receiving the cell measuring data every time.
2. The method of claim 1, wherein before the receiving the cell measurement data of the frequency points by using the primary antenna and the secondary antenna, the method further comprises:
determining whether the measurement frequency point needs an antenna time-sharing receiving function;
and the antenna time-sharing receiving function is used for receiving the cell measurement data by adopting the main measurement antenna and the auxiliary measurement antenna.
3. The method of claim 2, wherein the determining whether the measurement frequency point needs to support an antenna time-sharing reception function includes:
determining a list of measurement frequency points;
and for each measurement frequency point in the measurement frequency point list, if the measurement reference signal of the measurement frequency point contains SSB and CSI-RS, determining that the measurement frequency point needs to support an antenna time-sharing receiving function.
4. The method of claim 2, wherein determining that the current measurement frequency point for cell measurement needs to support an antenna time-sharing reception function comprises:
determining a list of measurement frequency points;
for each measurement frequency point in the measurement frequency point list, if a measurement reference signal of the measurement frequency point only contains SSB and the data volume of the SSB received in unit time is greater than a first preset data volume threshold, determining that the measurement frequency point needs to support an antenna time-sharing receiving function;
alternatively, the first and second electrodes may be,
and for each measurement frequency point in the measurement frequency point list, if the measurement reference signal of the measurement frequency point only contains CSI-RS and the data volume for receiving the CSI-RS in unit time is greater than a second preset data volume threshold, determining that the measurement frequency point needs to support an antenna time-sharing receiving function.
5. The method of claim 2, wherein determining whether the measurement frequency point needs to support an antenna time-sharing reception function comprises:
determining a preset zone bit of the measurement frequency point;
and determining whether the measurement frequency point needs to support the antenna time-sharing receiving function or not according to the bit value of the preset flag bit.
6. The method of claim 2, after determining whether the measurement frequency needs to support an antenna time division reception function, further comprising:
and if the measurement frequency point needs to support the antenna time-sharing receiving function, determining whether to trigger the antenna time-sharing receiving function.
7. The cell measurement method of claim 6, wherein determining whether to trigger the antenna time division reception function comprises:
and if the actual used bandwidth of the current DDR is larger than a preset bandwidth threshold, determining to trigger the antenna time-sharing receiving function.
8. The method of claim 1, wherein the measurement frequency points are sequentially selected from a preset measurement frequency point list.
9. The cell measurement method according to claim 1, wherein the number of receiving antennas of the terminal is 4, and the number of secondary measurement antennas is 1;
the auxiliary measuring antenna selected from the other receiving antennas except the main measuring antenna meets one or more of the following conditions:
Sn＝S3k+m＝{Rxbest,Rxx}；
S1∪S2∪S3＝S；
Si∩Sj＝Sbest＝{Rxbest}；
Si！＝Sj；
where S is used to indicate 4 sets of receive antennas S ═ { Rx0，Rx1，Rx2，Rx3}, Rx0, Rx1, Rx2 and Rx3 are used to denote 4 antennas, SiFor indicating the ith reception, S, of said frequency pointjFor indicating the j-th reception, Rx, of said frequency pointbestMain test antenna, Rx, for representing said frequency pointsxAuxiliary test antenna for indicating the frequency point selection according to a preset order, SnFor indicating the set of receiving antennas, S, to be used at each time of the frequency points3k+mUsed for representing the mth reception of the kth round of the frequency point.
10. The cell measurement method according to claim 1, wherein reselecting the main measurement antenna of the frequency point among the receiving antennas of the terminal each time the cell measurement data of the preset number of measurements of the frequency point is completed comprises:
determining antenna measurement values of the cell measurement data of the preset measurement times at the frequency point for each receiving antenna;
l1 smoothing and filtering the antenna measured value of each receiving antenna to obtain an antenna filtered value of each receiving antenna;
and reselecting the main antenna of the frequency point in the receiving antenna of the terminal according to the antenna filtering value.
11. The cell measurement method of claim 10, wherein the antenna measurement value is selected from one or more of the following: RSRP, RSRQ, and SNR.
12. The cell measurement method of claim 11, wherein the antenna measurement value is a single parameter;
according to the antenna filtering value, reselecting the main antenna of the frequency point in the receiving antenna of the terminal comprises the following steps: and comparing the antenna filtering values of all the receiving antennas, and determining the antenna with the largest antenna filtering value as the reselected main measurement antenna.
13. The cell measurement method of claim 11, wherein the antenna measurement values are a plurality of parameters;
according to the antenna filtering value, reselecting the main antenna of the frequency point in the receiving antenna of the terminal comprises the following steps: weighting and summing the antenna filtering values of the multiple parameters of each receiving antenna to obtain weighted filtering values;
and comparing the weighted filtering values of all the receiving antennas, and determining the antenna with the largest weighted filtering value as the reselected main measurement antenna.
14. The cell measurement method of claim 1, further comprising:
for each receiving antenna, combining the antenna measurement values of the cell measurement data with the preset measurement times, and then reporting to a high layer;
and clearing the measurement times of the antenna measurement values of each receiving antenna.
15. The cell measurement method of claim 1, further comprising: and only processing the cell measurement data received by the main measurement antenna and the auxiliary measurement antenna of the frequency point.
16. A cell measurement apparatus, comprising:
the antenna selection module is used for adopting a preset antenna of the terminal as a main measurement antenna for each measurement frequency point for receiving cell measurement data, and selecting a part of receiving antennas from the rest receiving antennas except the main measurement antenna as auxiliary measurement antennas;
the measurement module is used for receiving the cell measurement data of the frequency point by adopting the main measurement antenna and the auxiliary measurement antenna until the preset measurement times are reached, and reselecting the auxiliary measurement antenna according to a preset sequence when receiving the cell measurement data of the frequency point each time;
and the antenna reselection module is used for reselecting the main measurement antenna of the frequency point in the receiving antenna of the terminal after finishing the cell measurement data of the preset measurement times of the frequency point, recording the main measurement antenna as an updated main measurement antenna, selecting a part of receiving antennas from the rest receiving antennas except the updated main measurement antenna as updated auxiliary measurement antennas of the frequency point, receiving the cell measurement data by adopting the updated main measurement antenna and the updated auxiliary measurement antennas at the frequency point, and reselecting the updated auxiliary measurement antennas according to a preset sequence when receiving the cell measurement data every time.
17. A storage medium having a computer program stored thereon, wherein the computer program is adapted to perform the steps of the cell measurement method according to any of claims 1 to 15 when executed by a processor.
18. A terminal comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, performs the steps of the cell measurement method of any of claims 1 to 15.
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