CN114258040A - Selection method and device for reconstruction target cell, storage medium and terminal - Google Patents

Selection method and device for reconstruction target cell, storage medium and terminal Download PDF

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CN114258040A
CN114258040A CN202011005491.0A CN202011005491A CN114258040A CN 114258040 A CN114258040 A CN 114258040A CN 202011005491 A CN202011005491 A CN 202011005491A CN 114258040 A CN114258040 A CN 114258040A
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reconstruction
candidate target
target cell
cell
determining
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CN114258040B (en
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杨恩浩
谭舒
周巧成
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Unisoc Chongqing Technology Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract

A method and a device for selecting a reconstructed target cell, a storage medium and a terminal are provided, the method comprises: determining a plurality of reconstruction candidate target cells; determining a reconstruction sequence of the plurality of reconstruction candidate target cells according to the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell; and reconstructing at least one part of the plurality of reconstruction candidate target cells according to the reconstruction sequence of the plurality of reconstruction candidate target cells until reconstruction is successful. The invention can restrain the access signal strength and the signal quality of the reconstructed candidate target cell and realize the balance of the conflict between the access time and the access performance.

Description

Selection method and device for reconstruction target cell, storage medium and terminal
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for selecting a target cell for reconstruction, a storage medium, and a terminal.
Background
Along with increasingly obvious difference of application scenes of consumers, the cost difference of the mobile terminal is accelerated in two polarization trends, and the application requirements of the mobile terminal are further subdivided: from the view of implementation cost, the mobile terminal can be generally divided into a high-cost terminal and a low-cost terminal, and the high-cost terminal generally adopts a more complex RF device with better performance and a baseband chip with a more complex demodulation scheme and stronger bottom layer resolution capability to achieve better user experience; the low-cost terminal generally adopts a relatively simple RF device due to relatively low requirements on transmission quality and transmission fault tolerance, and is limited by the capacity of an adopted baseband processor, so that a complex demodulation scheme is unlikely to be adopted, which also determines that the bottom layer resolution capability is relatively low.
From the view of terminal application requirements, a mobile terminal can be generally divided into two application appeal modes, one mode is that the transmission rate is extremely pursued, it is expected that the faster the transmission speed is, the better the transmission speed is in unit time, and the transmission quality at every moment is not excessively required, such as a real-time monitoring system cloud transmission module.
The other is an extreme requirement on transmission quality, and the terminal of this type has a higher requirement on transmission quality on the basis of ensuring a certain transmission rate, such as a voice communication module, which is referred to as a signal transmission quality priority application scenario in the following description, and is defined by "a signal transmission quality parameter of a cell that is successfully reconstructed needs to be greater than a preset transmission quality threshold value", where the signal transmission quality parameter may be, for example, a signal quality parameter Sinr, or may also be a signal-to-noise ratio or other appropriate parameters.
However, in the prior art, these cost and application appeal differentiation terminals coexist in any possible location of the same network, and for operators, due to the huge cost of network management optimization, a cell network is usually configured with a set of mobility management parameters. This will inevitably lead to the matching of the set of network parameters of a cell to terminals with different cost differences and different application requirements.
There is a need for a method for selecting a target cell to be reconstructed, which can constrain the access signal strength and signal quality of a candidate target cell to achieve the balance between the access time and the access performance.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and an apparatus for selecting a target cell for reconstruction, a storage medium, and a terminal, which can constrain the access signal strength and signal quality of a candidate target cell for reconstruction, and achieve the balance of the conflict between the access time and the access performance.
To solve the above technical problem, an embodiment of the present invention provides a method for selecting a target cell to be reconstructed, including the following steps: determining a plurality of reconstruction candidate target cells; determining a reconstruction sequence of the plurality of reconstruction candidate target cells according to the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell; and reconstructing at least one part of the plurality of reconstruction candidate target cells according to the reconstruction sequence of the plurality of reconstruction candidate target cells until reconstruction is successful.
Optionally, the determining a plurality of reconstruction candidate target cells includes: determining whether a neighbor cell list exists or not, and measuring signal quality parameters and signal strength parameters of at least one part of neighbor cells in the neighbor cell list; and if the signal quality parameters and the signal strength parameters of at least one part of the adjacent cells in the adjacent cell list are measured, adopting the measured at least one part of the adjacent cells as the reconstruction candidate target cell.
Optionally, determining the reconstruction sequence of the multiple reconstruction candidate target cells according to the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell includes: determining a quality impact weight indicating an impact of the signal quality parameter on the reconstructed power and determining a strength impact weight indicating an impact of the signal strength parameter on the reconstructed power; for each reconstruction candidate target cell, determining the reconstruction sequence according to a weighted sum value, wherein the weighted sum value is a signal quality parameter multiplied by a quality influence weight and a signal strength parameter multiplied by a strength influence weight.
Optionally, for each reconstruction candidate target cell, determining the reconstruction order according to the weighted sum value includes: determining that the signal transmission rate of a cell which is successfully rebuilt needs to be greater than a preset rate; determining each reconstruction candidate target cell with the signal intensity parameter being greater than or equal to a preset intensity threshold; determining a reconstructed integrated value using the following formula:
Figure BDA0002695694580000031
wherein, IiA reconstructed integrated value, Sinr, for representing the ith reconstructed candidate target celliSignal quality parameter, RSRP, for representing the ith reconstruction candidate target celliSignal strength parameter, MeasPRB, for representing the ith reconstruction candidate target celliFor representing the measurement bandwidth, DlSubFrame, of the ith reconstruction candidate target celliThe method comprises the steps of obtaining a first reconstruction candidate target cell, a Factor1, a Factor2 and a Factor3, wherein the first reconstruction candidate target cell is used for representing the number of usable downlink samples in unit time of the ith reconstruction candidate target cell, the Factor1 is used for representing a quality influence weight, the Factor2 is used for representing an intensity influence weight, and the Factor3 is used for representing a bandwidth influence weight of the influence of the measured bandwidth on reconstruction power; and sequencing the reconstruction comprehensive values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction sequence.
Optionally, before the step of sorting the reconstruction integrated values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction sequence, the method for selecting a reconstruction target cell further includes: determining a reconstruction candidate target cell with the minimum signal quality parameter in each reconstruction candidate target cell with the signal strength parameter smaller than the preset strength threshold; determining a reconstruction comprehensive value of each reconstruction candidate target cell with the signal intensity parameter smaller than the preset intensity threshold value by adopting the following formula:
Ij＝Sinrmin×Factor1+RSRPj×Factor2+10×lg(6/100)
wherein, IjA reconstructed composite value, Sinr, for representing a jth reconstructed candidate target cell for which the signal strength parameter is less than the preset strength thresholdminSignal quality parameter, RSRP, for representing a reconstruction candidate target cell for which said signal quality parameter is minimaljThe Factor1 is used for representing the quality impact weight, and the Factor2 is used for representing the strength impact weight.
Optionally, Factor1 > Factor3 > Factor 2.
Optionally, for each reconstruction candidate target cell, determining the reconstruction order according to the weighted sum value includes: determining that a signal transmission quality parameter of a cell which is successfully reconstructed needs to be greater than a preset transmission quality threshold; determining each reconstruction candidate target cell with the signal intensity parameter being greater than or equal to a preset intensity threshold; determining a reconstructed integrated value using the following formula:
Figure BDA0002695694580000032
wherein, IiA reconstructed integrated value, Sinr, for representing the ith reconstructed candidate target celliSignal quality parameter, RSRP, for representing the ith reconstruction candidate target celliThe signal strength parameter is used for representing the signal strength parameter of the ith reconstruction candidate target cell, the Factor1 is used for representing the quality influence weight, and the Factor2 is used for representing the strength influence weight; and sequencing the reconstruction comprehensive values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction sequence.
Optionally, before the step of sorting the reconstruction integrated values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction sequence, the method for selecting a reconstruction target cell further includes: determining a reconstruction candidate target cell with the minimum signal quality parameter in each reconstruction candidate target cell with the signal strength parameter smaller than the preset strength threshold; determining a reconstruction comprehensive value of each reconstruction candidate target cell with the signal intensity parameter smaller than the preset intensity threshold value by adopting the following formula:
Ij＝Sinrmin×Factor1+RSRPj×Factor2
wherein, IjA reconstructed composite value, Sinr, for indicating a reconstructed candidate target cell for which the jth signal strength parameter is less than the preset strength thresholdminSignal quality parameter, RSRP, for representing a reconstruction candidate target cell for which said signal quality parameter is minimaljThe Factor1 is used for representing the quality impact weight, and the Factor2 is used for representing the strength impact weight.
Optionally, Factor1 < Factor 2.
Optionally, reconstructing at least a part of the plurality of reconstruction candidate target cells according to the reconstruction sequence of the plurality of reconstruction candidate target cells until reconstruction succeeds, including: determining a traversal order of the plurality of reconstruction candidate target cells according to the reconstruction order; and sequentially determining whether the signal quality parameter of each reconstruction candidate target cell is greater than or equal to a preset quality threshold value or not by adopting the traversal sequence, and only reconstructing the reconstruction candidate target cells of which the signal quality parameters are greater than or equal to the preset quality threshold value until the reconstruction is successful.
Optionally, the reestablished candidate target cell includes an FDD frequency point cell; determining a traversal order for the plurality of reconstruction candidate target cells according to the reconstruction order comprises: traversing the FDD frequency point cells, and determining the FDD frequency point cells with the FDD frequency point signal quality parameter being more than or equal to a first preset FDD frequency point quality threshold value and the FDD frequency point cells with the FDD frequency point signal intensity parameter being more than or equal to the first preset FDD frequency point intensity threshold value, and recording as first-level target cells, wherein the arrangement sequence inside the first-level target cells is determined according to the reconstruction sequence; recording target cells except the first-level target cell in the plurality of reconstruction candidate target cells as second-level target cells, wherein the arrangement sequence of the interior of the second-level target cells is determined according to the reconstruction sequence; determining that the traversal order is that the first-level target cell takes precedence over the second-level target cell.
Optionally, the method for selecting a target cell to be reconstructed further includes: if the plurality of reconstruction candidate target cells are determined to be not successfully reconstructed, searching other frequency points except the plurality of reconstruction candidate target cells to obtain one or more external candidate target cells; determining a reconstruction order of the outer candidate target cells; and reconstructing the external candidate target cell according to the reconstruction sequence of the external candidate target cell until the reconstruction is successful.
Optionally, determining the reconstruction sequence of the outer candidate target cells includes: determining that the signal transmission rate of a cell which is successfully rebuilt needs to be greater than a preset rate; determining PSS power of each external candidate target cell; sequencing the PSS power values of the external candidate target cells from large to small to obtain the power sequence of the external candidate target cells; and determining the reconstruction sequence of the outer candidate target cell according to the power sequence.
Optionally, the external candidate target cell includes an external FDD frequency point cell and an external TDD frequency point cell; determining a reconstruction order of the outer candidate target cells according to the power order comprises: determining a first external TDD frequency point cell and determining an external FDD frequency point cell arranged behind the first external TDD frequency point cell in sequence; traversing the external FDD frequency point cell which is arranged behind the first external TDD frequency point cell in sequence, and if one or more of the following conditions are met, advancing the sequence of the external FDD frequency point cell to the front of the first external TDD frequency point cell: the FDD frequency point signal quality parameter of the external FDD frequency point cell is greater than the preset multiple of the TDD frequency point signal quality parameter of the first external TDD frequency point cell; the FDD frequency point signal quality parameter of the external FDD frequency point cell is greater than or equal to a second preset FDD frequency point quality threshold; and the FDD frequency point signal intensity parameter of the external FDD frequency point cell is greater than or equal to a second preset FDD frequency point intensity threshold value.
Optionally, determining the reconstruction sequence of the outer candidate target cells includes: determining that a signal transmission quality parameter of a cell which is successfully reconstructed needs to be greater than a preset transmission quality threshold; determining each external candidate target cell with the signal strength parameter being greater than or equal to a preset strength threshold: determining a reconstructed integrated value using the following formula:
Figure BDA0002695694580000061
wherein, IkReconstructed composite value, Sinr, for representing the kth outer candidate target cellkSignal quality parameter, RSSI, for representing the kth outer candidate target cellkA signal strength parameter for representing the kth outer candidate target cell, Factor1 for representing a quality impact weight, and Factor2 for representing a strength impact weight; and sequencing the reconstruction comprehensive values of the plurality of external candidate target cells from large to small to obtain the reconstruction sequence.
Optionally, before the step of sorting the reconstruction aggregate values of the plurality of external candidate target cells from large to small to obtain the reconstruction sequence, the method for selecting a reconstruction target cell further includes: determining the external candidate target cell with the minimum signal quality parameter in all the external candidate target cells with the signal strength parameters smaller than the preset strength threshold; determining a reconstruction comprehensive value of each external candidate target cell with the signal intensity parameter smaller than the preset intensity threshold value by adopting the following formula:
Ip＝Sinrmin×Factor1+RSSIp×Factor2
wherein, IpA reconstructed composite value, Sinr, for indicating the p-th signal strength parameter of the outer candidate target cells being smaller than the preset strength thresholdminSignal quality parameter, RSSI, for an outer candidate target cell representing the smallest of said signal quality parameterspThe Factor1 is used for representing the quality influence weight, and the Factor2 is used for representing the strength influence weight.
To solve the foregoing technical problem, an embodiment of the present invention provides a selection apparatus for reconstructing a target cell, including: a cell determination module for determining a plurality of reconstruction candidate target cells; a sequence determination module, configured to determine a reconstruction sequence of the multiple reconstruction candidate target cells according to the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell; and the rebuilding module is used for rebuilding at least one part of the plurality of rebuilding candidate target cells according to the rebuilding sequence of the plurality of rebuilding candidate target cells until the rebuilding is successful.
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 method for selecting a target cell for reconstruction.
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 method for selecting a target cell for reconstruction 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 reconstruction sequence of the plurality of reconstruction candidate target cells is determined by setting the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell, and the two parameters of the signal quality parameter and the signal strength parameter can be considered at the same time, so that the access signal strength and the signal quality of the reconstruction candidate target cells are restricted, and the conflict between the access time and the access performance is balanced.
Further, a quality influence weight used for indicating the influence of the signal quality parameter on the reconstruction power is determined, an intensity influence weight used for indicating the influence of the signal intensity parameter on the reconstruction power is determined, then the reconstruction sequence is determined according to a weighted sum value for each reconstruction candidate target cell, the access signal intensity and the signal quality of the reconstruction candidate target cells can be restrained under different application scenes by determining the appropriate quality influence weight and the appropriate intensity influence weight, and the conflict between the access time and the access performance is balanced.
Further, when it is determined that the signal transmission rate of the cell that is successfully reconstructed needs to be greater than the preset rate, which is equivalent to that in a rate-first terminal application scenario, more parameters that may affect the signal transmission rate are considered for each reconstruction candidate target cell whose signal strength parameter is greater than or equal to the preset strength threshold.
Further, by setting Factor1 > Factor3 > Factor2, the weight occupied by the signal quality parameters can be increased, so that in a rate-first terminal application scenario, a reconstruction candidate target cell with better transmission quality is further selected, and the determined reconstruction sequence can further meet the actual requirements.
Further, when it is determined that the signal transmission quality parameter of the cell which is successfully reconstructed needs to be greater than the preset transmission quality threshold, it is equivalent to that in a quality-first terminal application scenario, for each reconstruction candidate target cell whose signal strength parameter is greater than or equal to the preset strength threshold, only parameters which affect the signal transmission quality, that is, the signal quality parameter and the signal strength parameter, are considered, so that the determined reconstruction sequence can better meet the actual requirements.
Further, by setting Factor1 < Factor2, the weight occupied by the signal strength parameter can be increased, so that in a quality-priority terminal application scenario, a reconstruction candidate target cell with better transmission strength is further selected, and the determined reconstruction sequence can further meet the actual requirements.
Further, setting a reconstruction sequence as a traversal sequence of the plurality of reconstruction candidate target cells; and sequentially determining whether the signal quality parameter of each reconstruction candidate target cell is greater than or equal to a preset quality threshold value or not by adopting the traversal sequence, and only reconstructing the reconstruction candidate target cells of which the signal quality parameters are greater than or equal to the preset quality threshold value until the reconstruction is successful. By adopting the scheme of the embodiment of the invention, only the reconstruction candidate target cell with better signal quality parameter result can be reconstructed, the reconstruction of the invalid reconstruction candidate target cell with worse signal quality parameter result is avoided, and the reconstruction efficiency is improved on the basis of improving the reconstruction success rate.
Further, according to a reconstruction sequence, whether an FDD frequency point cell with better signal quality and signal intensity exists is determined, the FDD frequency point cell is recorded as a first-level target cell, the traversal sequence is determined to be that the first-level target cell is prior to the second-level target cell, and the better FDD frequency point cell can be preferentially adopted for reconstruction, so that the characteristics of abundant service resources and good communication effect of the FDD frequency point cell are utilized, and the communication quality is improved.
Further, if it is determined that none of the plurality of reconstruction candidate target cells is successfully reconstructed, searching other frequency points except the plurality of reconstruction candidate target cells to obtain one or more external candidate target cells, and reconstructing the external candidate target cells according to the reconstruction sequence of the external candidate target cells until the reconstruction is successfully reconstructed, so that when the cells in the neighbor cell list are not suitable, the reconstruction power can be further improved by searching the external candidate target cells.
Drawings
Fig. 1 is a flowchart of a method for selecting a target cell for reconstruction according to an embodiment of the present invention;
fig. 2 is a flowchart of another method for selecting a target cell for reconstruction according to an embodiment of the present invention;
fig. 3 is a partial flowchart of a method for selecting a target cell for reconstruction according to another embodiment of the present invention;
fig. 4 is a partial flow chart of a method for selecting a target cell for reconstruction according to another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a selection apparatus for reconstructing a target cell according to an embodiment of the present invention.
Detailed Description
As described above, in the prior art, cost and application appeal differential terminals coexist in any possible location of the same network, and for an operator, due to the huge cost of network management optimization, a set of mobility management parameters is usually configured for a cell network. This will inevitably lead to the matching of the set of network parameters of a cell to terminals with different cost differences and different application requirements.
The inventor of the present invention finds, through research, that when a terminal is in a Radio Resource Control (RRC) connected state, if conditions such as Radio link failure, integrity protection failure, handover failure, and RRC reconfiguration failure occur, the RRC connection may be reestablished. In the process of reestablishing and establishing connection, the first operation of all the terminals is to find a reestablished target cell, complete the synchronization process with the target cell, and finally complete the system cell reading and accessing process of the cell based on the synchronization information, wherein the shorter the time consumption of the process is, the better the user experience is. For low-cost terminals, the reconstruction probability of the low-cost terminals in the same network is greatly increased compared with that of the high-cost terminals, and in order to guarantee user experience, on the premise that the reconstruction probability cannot be reduced, how to guarantee reconstruction power and shorten reconstruction time is a great challenge. In addition, how to select a reasonable cell to camp on in order to meet different user requirements in different scenarios during cell selection in the reconstruction process is also another challenge.
In the embodiment of the invention, the reconstruction sequence of the plurality of reconstruction candidate target cells is determined by setting the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell, and the two parameters of the signal quality parameter and the signal strength parameter can be considered at the same time, so that the access signal strength and the signal quality of the reconstruction candidate target cells are restricted, and the conflict between the access time and the access performance is balanced.
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 method for selecting a target cell to be reconstructed according to an embodiment of the present invention. The selection method of the reconstruction target cell may include steps S11 to S13:
step S11: determining a plurality of reconstruction candidate target cells;
step S12: determining a reconstruction sequence of the plurality of reconstruction candidate target cells according to the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell;
step S13: and reconstructing at least one part of the plurality of reconstruction candidate target cells according to the reconstruction sequence of the plurality of reconstruction candidate target cells until reconstruction is successful.
In a specific implementation of step S11, determining a plurality of reconstruction candidate target cells may be obtained by determining a neighbor cell list.
Further, the step of determining a plurality of reconstruction candidate target cells may comprise: determining whether a neighbor cell list exists or not, and measuring signal quality parameters and signal strength parameters of at least one part of neighbor cells in the neighbor cell list; and if the signal quality parameters and the signal strength parameters of at least one part of the adjacent cells in the adjacent cell list are measured, adopting the measured at least one part of the adjacent cells as the reconstruction candidate target cell.
Specifically, it may be determined whether there is a reconstruction candidate target cell at this time based on the reconstruction trigger scenario: if the neighbor cell list exists before the serving cell is reestablished and corresponding measurements have been made on the neighbor cell list cells, such as whether a signal quality parameter and a signal strength parameter have been measured. And if so, taking all the measured adjacent cells as reconstruction candidate target cells during reconstruction. And if the neighbor cell list does not exist before the service cell is reconstructed or all the neighbor cells do not carry out neighbor cell measurement, determining that the reconstruction candidate target cell does not exist at the reconstruction triggering moment.
The Signal quality parameter may be a Signal to Interference plus Noise Ratio (Sinr), and the Signal strength parameter may be a Reference Signal Receiving Power (RSRP).
In a specific implementation of step S12, the step of determining a reconstruction order of the plurality of reconstruction candidate target cells according to the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell may include: determining a quality impact weight indicating an impact of the signal quality parameter on the reconstructed power and determining a strength impact weight indicating an impact of the signal strength parameter on the reconstructed power; for each reconstruction candidate target cell, determining the reconstruction sequence according to a weighted sum value, wherein the weighted sum value is a signal quality parameter multiplied by a quality influence weight and a signal strength parameter multiplied by a strength influence weight.
In the embodiment of the invention, the access signal strength and the signal quality of the reconstructed candidate target cell can be restrained under different application scenes by determining the appropriate quality influence weight and strength influence weight, and the conflict between the access time and the access performance is balanced.
Further, the reconstruction sequence may be determined in different manners according to whether the rate-priority terminal application scenario or the quality-priority terminal application scenario is used.
It should be noted that the signal transmission rate depends on the cell signal quality Sinr and the number of downlink resources available to the cell, so that the two can be used as rate-first application scenario-related factors; the signal transfer quality depends on the cell signal quality Sinr, and thus can be applied as a signal transfer quality priority scenario-related factor.
However, actually, the cell signal strength RSRP affects the uplink and downlink access capability and the network side resource decision allocation, and in addition, since the actual power consumption of the terminal is related to the cell signal strength RSRP, because whether the same-frequency and different-frequency measurement tasks configured by the network are started or not is related to the cell signal strength, once the same-frequency and different-frequency measurement tasks are started, the module power is also greatly increased, and especially for some static application terminals, the measurements are useless consumption to a certain extent, so the cell signal strength RSRP is also used as a scene related factor.
Still further, for each reconstruction candidate target cell, the step of determining the reconstruction order according to the weighted sum value may comprise: determining that the signal transmission rate of a cell which is successfully rebuilt needs to be greater than a preset rate; determining each reconstruction candidate target cell with the signal intensity parameter being greater than or equal to a preset intensity threshold; determining a reconstructed integrated value using the following formula:
Figure BDA0002695694580000111
wherein, IiA reconstructed integrated value, Sinr, for representing the ith reconstructed candidate target celliSignal quality parameter, RSRP, for representing the ith reconstruction candidate target celliSignal strength parameter, MeasPRB, for representing the ith reconstruction candidate target celliFor representing the measurement bandwidth, DlSubFrame, of the ith reconstruction candidate target celliThe method comprises the steps of obtaining a first reconstruction candidate target cell, a Factor1, a Factor2 and a Factor3, wherein the first reconstruction candidate target cell is used for representing the number of usable downlink samples in unit time of the ith reconstruction candidate target cell, the Factor1 is used for representing a quality influence weight, the Factor2 is used for representing an intensity influence weight, and the Factor3 is used for representing a bandwidth influence weight of the influence of the measured bandwidth on reconstruction power; and sequencing the reconstruction comprehensive values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction sequence.
It should be noted that by setting 10 × lg (MeasPRB)i/100×DlSubFramei) Conversion of the measurement bandwidth into units of signal strength (e.g., DB values) may be implemented.
Specifically, SinriAnd RSRPiThe method can be obtained from terminal neighbor measurement information; MeasPRBiMay be obtained from the reconfiguration information; DlSubFrameiDifferent preset values can be configured according to whether the reconstruction candidate target cell is a TDD frequency cell or an FDD frequency cell, for example, if TDD is configured to be 2, if FDD is configured to be 10; the Factor1/Factor2/Factor3 may obtain the configuration based on measured or empirical analysis. The preset strength threshold may be RSRP measurement value information corresponding to the upper limit of the uplink transmission capability of the cell.
In the embodiment of the present invention, when it is determined that the signal transmission rate of the cell that is successfully reconstructed needs to be greater than the preset rate, which is equivalent to that in a rate-first terminal application scenario, more parameters that may affect the signal transmission rate are considered for each reconstruction candidate target cell whose signal strength parameter is greater than or equal to the preset strength threshold.
Further, before sorting the reconstruction integration values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction order, the method may further include: determining a reconstruction candidate target cell with the minimum signal quality parameter in each reconstruction candidate target cell with the signal strength parameter smaller than the preset strength threshold; determining a reconstruction comprehensive value of each reconstruction candidate target cell with the signal intensity parameter smaller than the preset intensity threshold value by adopting the following formula:
Ij＝Sinrmin×Factor1+RSRPj×Factor2+10×lg(6/100)
wherein, IjA reconstructed composite value, Sinr, for representing a jth reconstructed candidate target cell for which the signal strength parameter is less than the preset strength thresholdminSignal quality parameter, RSRP, for representing a reconstruction candidate target cell for which said signal quality parameter is minimaljThe Factor1 is used for representing the quality impact weight, and the Factor2 is used for representing the strength impact weight.
Further, Factor1 > Factor3 > Factor 2.
In the embodiment of the invention, the weight occupied by the signal quality parameter can be increased by setting Factor1 > Factor3 > Factor2, so that a reconstruction candidate target cell with better transmission quality is further selected in a rate-first terminal application scene, and the determined reconstruction sequence can further meet the actual requirement.
In a quality-first terminal application scenario, the reconstruction order may be determined in another manner.
Further, for each reconstruction candidate target cell, determining the reconstruction order according to the weighted sum value may include: determining that a signal transmission quality parameter of a cell which is successfully reconstructed needs to be greater than a preset transmission quality threshold; determining each reconstruction candidate target cell with the signal intensity parameter being greater than or equal to a preset intensity threshold; determining a reconstructed integrated value using the following formula:
Figure BDA0002695694580000131
wherein, IiA reconstructed integrated value, Sinr, for representing the ith reconstructed candidate target celliSignal quality parameter, RSRP, for representing the ith reconstruction candidate target celliThe signal strength parameter is used for representing the signal strength parameter of the ith reconstruction candidate target cell, the Factor1 is used for representing the quality influence weight, and the Factor2 is used for representing the strength influence weight; and sequencing the reconstruction comprehensive values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction sequence.
Specifically, SinriAnd RSRPiThe method can be obtained from terminal neighbor measurement information; factor1/Factor2 may obtain the configuration based on measured or empirical analysis. The preset strength threshold may be RSRP measurement value information corresponding to the upper limit of the uplink transmission capability of the cell.
In the embodiment of the present invention, when it is determined that the signal transmission quality parameter of the cell that is successfully reconstructed needs to be greater than the preset transmission quality threshold, it is equivalent to that in a quality-first terminal application scenario, for each reconstruction candidate target cell whose signal strength parameter is greater than or equal to the preset strength threshold, only parameters that affect the signal transmission quality, that is, the signal quality parameter and the signal strength parameter, are considered, so that the determined reconstruction sequence can better meet the actual requirements.
Further, before sorting the reconstruction integration values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction order, the method may further include: determining a reconstruction candidate target cell with the minimum signal quality parameter in each reconstruction candidate target cell with the signal strength parameter smaller than the preset strength threshold; determining a reconstruction comprehensive value of each reconstruction candidate target cell with the signal intensity parameter smaller than the preset intensity threshold value by adopting the following formula:
Ij＝Sinrmin×Factor1+RSRPj×Factor2
wherein, IjA reconstructed composite value, Sinr, for indicating a reconstructed candidate target cell for which the jth signal strength parameter is less than the preset strength thresholdminSignal quality parameter, RSRP, for representing a reconstruction candidate target cell for which said signal quality parameter is minimaljThe Factor1 is used for representing the quality impact weight, and the Factor2 is used for representing the strength impact weight.
Further, Factor1 < Factor 2.
In the embodiment of the invention, the weight occupied by the signal intensity parameter can be increased by setting Factor1 to be less than Factor2, so that a reconstruction candidate target cell with better transmission intensity is further selected in a quality-priority terminal application scene, and the determined reconstruction sequence can further meet the actual requirement.
In a specific embodiment of step S13, the reconstruction order of the reconstruction candidate target cells may be directly adopted to reconstruct at least a part of the reconstruction candidate target cells until the reconstruction is successful.
In another specific embodiment, a traversal order of the plurality of reconstruction candidate target cells may be determined according to the reconstruction order, and at least a portion of the plurality of reconstruction candidate target cells may be reconstructed by using the traversal order until the reconstruction is successful.
Further, reconstructing at least a portion of the plurality of reconstruction candidate target cells according to the reconstruction sequence of the plurality of reconstruction candidate target cells until the reconstruction is successful may include: determining a traversal order of the plurality of reconstruction candidate target cells according to the reconstruction order; and sequentially determining whether the signal quality parameter of each reconstruction candidate target cell is greater than or equal to a preset quality threshold value or not by adopting the traversal sequence, and only reconstructing the reconstruction candidate target cells of which the signal quality parameters are greater than or equal to the preset quality threshold value until the reconstruction is successful.
In the embodiment of the invention, only the reconstruction candidate target cell with a better signal quality parameter result can be reconstructed, so that the reconstruction of the invalid reconstruction candidate target cell with a poorer signal quality parameter result is avoided, and the reconstruction efficiency is improved on the basis of improving the reconstruction success rate.
Furthermore, the reestablishing candidate target cell comprises an FDD frequency point cell; determining the traversal order of the plurality of reconstruction candidate target cells according to the reconstruction order may include: traversing the FDD frequency point cells, and determining the FDD frequency point cells with the FDD frequency point signal quality parameter being more than or equal to a first preset FDD frequency point quality threshold value and the FDD frequency point cells with the FDD frequency point signal intensity parameter being more than or equal to the first preset FDD frequency point intensity threshold value, and recording as first-level target cells, wherein the arrangement sequence inside the first-level target cells is determined according to the reconstruction sequence; recording target cells except the first-level target cell in the plurality of reconstruction candidate target cells as second-level target cells, wherein the arrangement sequence of the interior of the second-level target cells is determined according to the reconstruction sequence; determining that the traversal order is that the first-level target cell takes precedence over the second-level target cell.
More specifically, if the FDD frequency point Sinr > the FDD frequency point Sinr threshold and the FDD frequency point RSRP > the RSRP threshold, the series of FDD frequency points may be classified into a class 1 camping attempt set, and other frequency points that do not satisfy such a relationship may be classified into a class 2 camping attempt set, and when camping, a class 1 set cell is tried first, and then cells in the set 2 are tried. The order of residence of the frequency points in each set is re-ordered using the measurements.
In the embodiment of the invention, whether an FDD frequency point cell with better signal quality and signal intensity exists is determined according to a reconstruction sequence and is recorded as a first-level target cell, and the traversal sequence is determined to be that the first-level target cell is prior to the second-level target cell, so that the better FDD frequency point cell can be preferentially adopted for reconstruction, and the characteristics of abundant service resources and good communication effect of the FDD frequency point cell are utilized to improve the communication quality.
It should be noted that the method can be applied to a rate priority terminal application scenario, and in a quality priority terminal application scenario, the reestablishment of access can be sequentially attempted from large to small according to the size relationship of the cell (RSRP + SINR).
In the embodiment of the invention, the reconstruction sequence of the plurality of reconstruction candidate target cells is determined by setting the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell, and the two parameters of the signal quality parameter and the signal strength parameter can be considered at the same time, so that the access signal strength and the signal quality of the reconstruction candidate target cells are restricted, and the conflict between the access time and the access performance is balanced.
Referring to fig. 2, fig. 2 is a flowchart of another selection method for reconstructing a target cell according to an embodiment of the present invention. The other selection method for reconstructing the target cell may include steps S21 to S25, which are described below.
In step S21, a plurality of reconstruction candidate target cells are determined.
In step S22, a reconstruction order of the plurality of reconstruction candidate target cells is determined.
In step S23, it is determined whether the signal quality parameter is equal to or greater than a preset quality threshold, and if so, the process continues to step S24, and if not, the process continues to step S25.
Specifically, since the reconstruction attempt of the invalid cell will increase the reconstruction duration, in order to reduce the reconstruction attempt of the invalid cell, the reconstruction attempt is performed only on cells that can be successfully reconstructed with a high probability in the existing reconstruction candidate list process. The probability of the invalid cell reconstruction attempt is constrained by a signal quality Sinr threshold (Sinr _ Th), and the larger the value is, the lower the probability of the invalid cell reconstruction is, thereby saving reconstruction time, but the larger the value is, the more possible the valid reconstruction cell misses the reconstruction attempt is also increased. However, in the trade-off of "reducing valid reconstruction attempts" versus "reducing invalid reconstruction attempts", the present document biases "reducing invalid reconstruction attempts" at this step.
In step S24, reconstruction is performed.
Specifically, reading of the target cell MIB + SIB1+ SIB2 may be performed, and the access procedure may be triggered after the reading of the system message is completed. The reading and placing of other SIBs besides SIB1 and SIB2 is done along with the access procedure and the service procedure, and in one embodiment, may be done before entering pause (Idle).
In step S25, each reconstruction candidate target cell is traversed.
It should be noted that, in the process of traversing each reconstruction candidate target cell, the reconstruction may be finished when the reconstruction is successful, or may be finished after all the reconstruction candidate target cells are traversed and the reconstruction fails.
In the specific implementation, more details about steps S21 to S25 are described with reference to steps in fig. 1, and are not described herein again.
Referring to fig. 3, fig. 3 is a partial flowchart of a selection method for reconstructing a target cell according to another embodiment of the present invention. The still another selection method for reconstructing the target cell may include steps S11 to S13 shown in fig. 1, and may further include steps S31 to S33:
step S31: if the plurality of reconstruction candidate target cells are determined to be not successfully reconstructed, searching other frequency points except the plurality of reconstruction candidate target cells to obtain one or more external candidate target cells;
step S32: determining a reconstruction order of the outer candidate target cells;
step S33: and reconstructing the external candidate target cell according to the reconstruction sequence of the external candidate target cell until the reconstruction is successful.
In a specific implementation of step S31, the frequency point of the cell that may reside in the location environment may be obtained by using a frequency point search algorithm or a Broadcast Control Channel (Ba) table.
In the specific implementation of step S32, the reconstruction order may be determined in different manners according to whether the terminal application scenario with rate priority or the terminal application scenario with quality priority.
In a specific implementation manner of the embodiment of the present invention, the step of determining the reconstruction sequence of the outer candidate target cells may include: determining that the signal transmission rate of a cell which is successfully rebuilt needs to be greater than a preset rate; determining Primary Synchronization Signal (PSS) power of each external candidate target cell; sequencing the PSS power values of the external candidate target cells from large to small to obtain the power sequence of the external candidate target cells; and determining the reconstruction sequence of the outer candidate target cell according to the power sequence.
Further, the external candidate target cell includes an external Frequency-division Duplex (FDD) Frequency point cell and an external Time-division Duplex (TDD) Frequency point cell; the step of determining a reconstruction order of the outer candidate target cells according to the power order may comprise: determining a first external TDD frequency point cell and determining an external FDD frequency point cell arranged behind the first external TDD frequency point cell in sequence; traversing the external FDD frequency point cell which is arranged behind the first external TDD frequency point cell in sequence, and if one or more of the following conditions are met, advancing the sequence of the external FDD frequency point cell to the front of the first external TDD frequency point cell: the FDD frequency point signal quality parameter of the external FDD frequency point cell is greater than the preset multiple of the TDD frequency point signal quality parameter of the first external TDD frequency point cell; the FDD frequency point signal quality parameter of the external FDD frequency point cell is greater than or equal to a second preset FDD frequency point quality threshold; and the FDD frequency point signal intensity parameter of the external FDD frequency point cell is greater than or equal to a second preset FDD frequency point intensity threshold value.
The PSS position, the PSS power and the Sinr index corresponding to the PSS corresponding to each frequency point can be obtained by adopting a calculation time domain correlation algorithm.
Specifically, if the terminal application scenario is rate-first, the PSS power is used to sequence all frequency points first; then, a 1 st TDD frequency point Freqx is found from all the frequency points sequenced by the PSS power, all the FDD frequency points Freqy after the frequency point Freqx are judged and meet one or more judgment conditions, and the sequence of other frequency points is kept unchanged before the frequency point Freqy position is referred to the frequency point Freqx. And iterating the process until all the FDD frequency points are judged by traversal.
In another specific implementation manner of the embodiment of the present invention, the terminal application scenario may be that the signal transmission quality is prioritized.
Further, the step of determining the reconstruction order of the outer candidate target cells may comprise: determining that a signal transmission quality parameter of a cell which is successfully reconstructed needs to be greater than a preset transmission quality threshold; determining each external candidate target cell with the signal strength parameter being greater than or equal to a preset strength threshold: determining a reconstructed integrated value using the following formula:
Figure BDA0002695694580000181
wherein, IkReconstructed composite value, Sinr, for representing the kth outer candidate target cellkSignal quality parameter, RSSI, for representing the kth outer candidate target cellkA signal strength parameter for representing the kth outer candidate target cell, Factor1 for representing a quality impact weight, and Factor2 for representing a strength impact weight; and sequencing the reconstruction comprehensive values of the plurality of external candidate target cells from large to small to obtain the reconstruction sequence.
It is understood that the Signal Strength parameter may be Received Signal Strength Indication (RSSI) after PSS synchronization.
Further, before sorting the reconstruction integration values of the plurality of outer candidate target cells from large to small to obtain the reconstruction order, the method may further include: determining the external candidate target cell with the minimum signal quality parameter in all the external candidate target cells with the signal strength parameters smaller than the preset strength threshold; determining a reconstruction comprehensive value of each external candidate target cell with the signal intensity parameter smaller than the preset intensity threshold value by adopting the following formula:
Ip＝Sinrmin×Factor1+RSSIp×Factor2
wherein, IpA reconstructed composite value, Sinr, for indicating the p-th signal strength parameter of the outer candidate target cells being smaller than the preset strength thresholdminSignal quality parameter, RSSI, for an outer candidate target cell representing the smallest of said signal quality parameterspThe Factor1 is used for representing the quality influence weight, and the Factor2 is used for representing the strength influence weight.
In the embodiment of the invention, if it is determined that the reconstruction of the plurality of reconstruction candidate target cells is unsuccessful, other frequency points except the plurality of reconstruction candidate target cells are searched to obtain one or more external candidate target cells, and the external candidate target cells are reconstructed according to the reconstruction sequence of the external candidate target cells until the reconstruction is successful, so that when the cells in the neighbor cell list are not suitable, the reconstruction power can be further improved by searching the external candidate target cells.
Referring to fig. 4, fig. 4 is a partial flowchart of a selection method for reconstructing a target cell according to another embodiment of the present invention. The still another method for selecting a reconstructed target cell may include steps S21 to S25 shown in fig. 2, and may further include steps S41 to S47, which are described below.
In step S41, other frequency points except for the plurality of reconstruction candidate target cells are searched to obtain one or more external candidate target cells.
In step S42, the PSS is synchronized.
Specifically, after the PSS is synchronized, the PSS synchronization position of the frequency point, the RSSI value corresponding to the PSS, and the Sinr corresponding to the PSS may be determined.
In step S43, the PSS power of each outer candidate target cell is determined.
In step S44, the signal quality parameters of the first external TDD frequency point cell and the external FDD frequency point cell frequency point thereafter, and the signal strength parameters of the external FDD frequency point cell frequency point thereafter are determined.
In step S45, a reconstruction order of the outer candidate target cells is determined.
Specifically, after the reconstruction sequence is determined, reconstruction may be attempted, specifically, cell ID estimation and frequency offset estimation may be obtained based on the PSS synchronization position of each frequency point, reading of the reconstruction target candidate cell MIB + SIB1+ SIB2 may be performed in sequence, and an access process is triggered after the system message reading is completed. The reading and placing of other SIBs besides SIB1 and SIB2 is done along with the access procedure and the service procedure, and in one embodiment, may be done before entering pause (Idle).
In step S46, it is determined whether the reconstruction was successful, and if so, it is ended, and if not, step S47 is performed.
In step S47, each outer candidate target cell is traversed.
In the specific implementation, please refer to the description of steps S1 and 2 for further details regarding steps S41 to S47, which are not repeated herein.
Referring to fig. 5, fig. 5 is a schematic structural diagram of a selection apparatus for reconstructing a target cell according to an embodiment of the present invention. The selecting means for reconstructing the target cell may include:
a cell determination module 51 for determining a plurality of reconstruction candidate target cells;
an order determination module 52, configured to determine a reconstruction order of the multiple reconstruction candidate target cells according to the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell;
a reconstructing module 53, configured to reconstruct at least a part of the plurality of reconstruction candidate target cells according to the reconstruction sequence of the plurality of reconstruction candidate target cells until the reconstruction is successful.
In the embodiment of the invention, the reconstruction sequence of the plurality of reconstruction candidate target cells is determined by setting the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell, and the two parameters of the signal quality parameter and the signal strength parameter can be considered at the same time, so that the access signal strength and the signal quality of the reconstruction candidate target cells are restricted, and the conflict between the access time and the access performance is balanced.
For the principle, specific implementation and beneficial effects of the apparatus for selecting a target cell for reconstruction, please refer to the related description of the method for selecting a target cell for reconstruction described above, and will not be described herein again.
Embodiments of the present invention also provide 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 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 other general-purpose processors, Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
It will also be appreciated that the memory in the embodiments of the subject application can be either volatile memory or nonvolatile memory, or can include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash memory. Volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (enhanced SDRAM), SDRAM (SLDRAM), synchlink DRAM (SLDRAM), and direct bus RAM (DR RAM).
The embodiment of the invention also provides a terminal, which comprises a memory and a processor, wherein the memory is stored with a computer program capable of running on the processor, and the processor executes the steps of the method when running the computer program. The terminal includes, but is not limited to, a mobile phone, a computer, a tablet computer and other terminal devices.
Specifically, 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 device), a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing devices 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 evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.
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 (19)

1. A method for selecting a target cell for reconstruction, comprising the steps of:
determining a plurality of reconstruction candidate target cells;
determining a reconstruction sequence of the plurality of reconstruction candidate target cells according to the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell;
and reconstructing at least one part of the plurality of reconstruction candidate target cells according to the reconstruction sequence of the plurality of reconstruction candidate target cells until reconstruction is successful.
2. The method of claim 1, wherein determining a plurality of reconstruction candidate target cells comprises:
determining whether a neighbor cell list exists or not, and measuring signal quality parameters and signal strength parameters of at least one part of neighbor cells in the neighbor cell list;
and if the signal quality parameters and the signal strength parameters of at least one part of the adjacent cells in the adjacent cell list are measured, adopting the measured at least one part of the adjacent cells as the reconstruction candidate target cell.
3. The method of claim 1, wherein determining the reconstruction order of the plurality of reconstruction candidate target cells according to the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell comprises:
determining a quality impact weight indicating an impact of the signal quality parameter on the reconstructed power and determining a strength impact weight indicating an impact of the signal strength parameter on the reconstructed power;
for each reconstruction candidate target cell, determining the reconstruction sequence according to a weighted sum value, wherein the weighted sum value is a signal quality parameter multiplied by a quality influence weight and a signal strength parameter multiplied by a strength influence weight.
4. The method of claim 3, wherein determining the reconstruction order according to the weighted sum comprises, for each reconstruction candidate target cell:
determining that the signal transmission rate of a cell which is successfully rebuilt needs to be greater than a preset rate;
determining each reconstruction candidate target cell with the signal intensity parameter being greater than or equal to a preset intensity threshold;
determining a reconstructed integrated value using the following formula:
Figure FDA0002695694570000021
wherein, IiA reconstructed integrated value, Sinr, for representing the ith reconstructed candidate target celliSignal quality parameter, RSRP, for representing the ith reconstruction candidate target celliSignal strength parameter, MeasPRB, for representing the ith reconstruction candidate target celliFor representing the measurement bandwidth, DlSubFrame, of the ith reconstruction candidate target celliThe method comprises the steps of obtaining a first reconstruction candidate target cell, a Factor1, a Factor2 and a Factor3, wherein the first reconstruction candidate target cell is used for representing the number of usable downlink samples in unit time of the ith reconstruction candidate target cell, the Factor1 is used for representing a quality influence weight, the Factor2 is used for representing an intensity influence weight, and the Factor3 is used for representing a bandwidth influence weight of the influence of the measured bandwidth on reconstruction power;
and sequencing the reconstruction comprehensive values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction sequence.
5. The method of claim 4, further comprising, before sorting the reconstruction integration values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction order:
determining a reconstruction candidate target cell with the minimum signal quality parameter in each reconstruction candidate target cell with the signal strength parameter smaller than the preset strength threshold;
determining a reconstruction comprehensive value of each reconstruction candidate target cell with the signal intensity parameter smaller than the preset intensity threshold value by adopting the following formula:
Ij＝Sinrmin×Factor1+RSRPj×Factor2+10×lg(6/100)
wherein, IjA reconstructed composite value, Sinr, for representing a jth reconstructed candidate target cell for which the signal strength parameter is less than the preset strength thresholdminSignal quality parameter, RSRP, for representing a reconstruction candidate target cell for which said signal quality parameter is minimaljThe Factor1 is used for representing the quality impact weight, and the Factor2 is used for representing the strength impact weight.
6. The method of claim 4, wherein Factor1 > Factor3 > Factor 2.
7. The method of claim 3, wherein determining the reconstruction order according to the weighted sum comprises, for each reconstruction candidate target cell:
determining that a signal transmission quality parameter of a cell which is successfully reconstructed needs to be greater than a preset transmission quality threshold;
determining each reconstruction candidate target cell with the signal intensity parameter being greater than or equal to a preset intensity threshold;
determining a reconstructed integrated value using the following formula:
Figure FDA0002695694570000031
wherein, IiA reconstructed integrated value, Sinr, for representing the ith reconstructed candidate target celliSignal quality parameter, RSRP, for representing the ith reconstruction candidate target celliThe signal strength parameter is used for representing the signal strength parameter of the ith reconstruction candidate target cell, the Factor1 is used for representing the quality influence weight, and the Factor2 is used for representing the strength influence weight;
and sequencing the reconstruction comprehensive values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction sequence.
8. The method of claim 7, further comprising, before the step of sorting the reconstruction integration values of the plurality of reconstruction candidate target cells from large to small to obtain the reconstruction order:
determining a reconstruction candidate target cell with the minimum signal quality parameter in each reconstruction candidate target cell with the signal strength parameter smaller than the preset strength threshold;
determining a reconstruction comprehensive value of each reconstruction candidate target cell with the signal intensity parameter smaller than the preset intensity threshold value by adopting the following formula:
Ij＝Sinrmin×Factor1+RSRPj×Factor2
wherein, IjA reconstructed composite value, Sinr, for indicating a reconstructed candidate target cell for which the jth signal strength parameter is less than the preset strength thresholdminSignal quality parameter, RSRP, for representing a reconstruction candidate target cell for which said signal quality parameter is minimaljSignal strength parameters for representing a reconstruction candidate target cell for which the jth signal strength parameter is less than the preset strength threshold, Factor1 for representing quality impact weight, and Factor2 for representingThe intensity affects the weight.
9. The method of claim 7, wherein Factor1 < Factor 2.
10. The method of claim 1, wherein reconstructing at least a portion of the plurality of reconstruction candidate target cells according to the reconstruction order of the plurality of reconstruction candidate target cells until reconstruction is successful comprises:
determining a traversal order of the plurality of reconstruction candidate target cells according to the reconstruction order;
and sequentially determining whether the signal quality parameter of each reconstruction candidate target cell is greater than or equal to a preset quality threshold value or not by adopting the traversal sequence, and only reconstructing the reconstruction candidate target cells of which the signal quality parameters are greater than or equal to the preset quality threshold value until the reconstruction is successful.
11. The method for selecting a target cell to be reconstructed according to claim 10, wherein the candidate target cell to be reconstructed includes an FDD frequency bin cell;
determining a traversal order for the plurality of reconstruction candidate target cells according to the reconstruction order comprises:
traversing the FDD frequency point cells, and determining the FDD frequency point cells with the FDD frequency point signal quality parameter being more than or equal to a first preset FDD frequency point quality threshold value and the FDD frequency point cells with the FDD frequency point signal intensity parameter being more than or equal to the first preset FDD frequency point intensity threshold value, and recording as first-level target cells, wherein the arrangement sequence inside the first-level target cells is determined according to the reconstruction sequence;
recording target cells except the first-level target cell in the plurality of reconstruction candidate target cells as second-level target cells, wherein the arrangement sequence of the interior of the second-level target cells is determined according to the reconstruction sequence;
determining that the traversal order is that the first-level target cell takes precedence over the second-level target cell.
12. The method of claim 1, further comprising:
if the plurality of reconstruction candidate target cells are determined to be not successfully reconstructed, searching other frequency points except the plurality of reconstruction candidate target cells to obtain one or more external candidate target cells;
determining a reconstruction order of the outer candidate target cells;
and reconstructing the external candidate target cell according to the reconstruction sequence of the external candidate target cell until the reconstruction is successful.
13. The method of claim 12, wherein determining the reconstruction order of the outer candidate target cells comprises:
determining that the signal transmission rate of a cell which is successfully rebuilt needs to be greater than a preset rate;
determining PSS power of each external candidate target cell;
sequencing the PSS power values of the external candidate target cells from large to small to obtain the power sequence of the external candidate target cells;
and determining the reconstruction sequence of the outer candidate target cell according to the power sequence.
14. The method for selecting a target cell for reconstruction according to claim 13, wherein the external candidate target cells include an external FDD frequency cell and an external TDD frequency cell;
determining a reconstruction order of the outer candidate target cells according to the power order comprises:
determining a first external TDD frequency point cell and determining an external FDD frequency point cell arranged behind the first external TDD frequency point cell in sequence;
traversing the external FDD frequency point cell which is arranged behind the first external TDD frequency point cell in sequence, and if one or more of the following conditions are met, advancing the sequence of the external FDD frequency point cell to the front of the first external TDD frequency point cell:
the FDD frequency point signal quality parameter of the external FDD frequency point cell is greater than the preset multiple of the TDD frequency point signal quality parameter of the first external TDD frequency point cell;
the FDD frequency point signal quality parameter of the external FDD frequency point cell is greater than or equal to a second preset FDD frequency point quality threshold;
and the FDD frequency point signal intensity parameter of the external FDD frequency point cell is greater than or equal to a second preset FDD frequency point intensity threshold value.
15. The method of claim 12, wherein determining the reconstruction order of the outer candidate target cells comprises:
determining that a signal transmission quality parameter of a cell which is successfully reconstructed needs to be greater than a preset transmission quality threshold;
determining each external candidate target cell with the signal strength parameter being greater than or equal to a preset strength threshold:
determining a reconstructed integrated value using the following formula:
Figure FDA0002695694570000061
wherein, IkReconstructed composite value, Sinr, for representing the kth outer candidate target cellkSignal quality parameter, RSSI, for representing the kth outer candidate target cellkA signal strength parameter for representing the kth outer candidate target cell, Factor1 for representing a quality impact weight, and Factor2 for representing a strength impact weight;
and sequencing the reconstruction comprehensive values of the plurality of external candidate target cells from large to small to obtain the reconstruction sequence.
16. The method of claim 15, further comprising, before sorting the reconstructed aggregate values of the plurality of outer candidate target cells from large to small to obtain the reconstruction order:
determining the external candidate target cell with the minimum signal quality parameter in all the external candidate target cells with the signal strength parameters smaller than the preset strength threshold;
determining a reconstruction comprehensive value of each external candidate target cell with the signal intensity parameter smaller than the preset intensity threshold value by adopting the following formula:
Ip＝Sinrmin×Factor1+RSSIp×Factor2
wherein, IpA reconstructed composite value, Sinr, for indicating the p-th signal strength parameter of the outer candidate target cells being smaller than the preset strength thresholdminSignal quality parameter, RSSI, for an outer candidate target cell representing the smallest of said signal quality parameterspThe Factor1 is used for representing the quality influence weight, and the Factor2 is used for representing the strength influence weight.
17. A selection apparatus for reconstructing a target cell, comprising:
a cell determination module for determining a plurality of reconstruction candidate target cells;
a sequence determination module, configured to determine a reconstruction sequence of the multiple reconstruction candidate target cells according to the signal quality parameter and the signal strength parameter of each reconstruction candidate target cell;
and the rebuilding module is used for rebuilding at least one part of the plurality of rebuilding candidate target cells according to the rebuilding sequence of the plurality of rebuilding candidate target cells until the rebuilding is successful.
18. A storage medium having stored thereon a computer program for performing the steps of the method for selecting a reconstruction target cell of any one of claims 1 to 16 when executed by a processor.
19. 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 method for selecting a reconstruction target cell of any of claims 1 to 16.
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