CN114760666B - Cell reselection method, device, electronic equipment and storage medium - Google Patents
Cell reselection method, device, electronic equipment and storage medium Download PDFInfo
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- 230000003247 decreasing effect Effects 0.000 claims 2
- 238000004891 communication Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000005259 measurement Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/00837—Determination of triggering parameters for hand-off
- H04W36/008375—Determination of triggering parameters for hand-off based on historical data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/26—Reselection being triggered by specific parameters by agreed or negotiated communication parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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Abstract
The application provides a cell reselection method, a cell reselection device, electronic equipment and a storage medium, and relates to the technical field of communication, wherein the method comprises the following steps: and acquiring RSRP values of the candidate serving cells at the current moment and RSRP values of the previous moment which are preset for a long time from the current moment. Based on the RSRP value of each candidate service cell at the current moment and the RSRP value of the previous moment, the direction indication parameter corresponding to each candidate service cell is obtained, so that the terminal can determine the change information of the RSRP value of each candidate service cell according to the direction indication parameter, and then determine the target service cell according to the RSRP value of each candidate service cell at the current moment and the corresponding direction indication parameter, so that the change of the RSRP value of the target service cell is stable, the RSPR value is higher, the number of times of cell reselection can be effectively reduced when the terminal moves quickly, and the problem of hysteresis of the determined target service cell is avoided.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a cell reselection method, a cell reselection device, an electronic device, and a storage medium.
Background
A cell, also called a cell, refers to an area covered by one of the base stations or a part of the base station (sector antenna) in a cellular mobile communication system, in which area a terminal device can communicate with the base station through a channel of the cell.
When the signal quality of the communication between the terminal equipment and the serving cell is poor, the terminal can autonomously detect the communication quality of other cells and select the cell with the best signal strength as the serving cell, and the process is called cell reselection. If the terminal is in a fast moving state, the signal stability of the cell with the best current signal strength may be poor, and along with the fast movement of the terminal, the signal strength of the cell also drops rapidly, so that the terminal reselects the cell frequently in a short time, the power consumption of the terminal is improved, and further, the terminal is difficult to determine a proper cell as a service cell in the fast moving state, so that the terminal reselects to the proper cell with certain hysteresis.
Disclosure of Invention
The embodiment of the application aims to provide a cell reselection method, so that a proper cell can be selected as a service cell when a terminal moves quickly, the problem of hysteresis in the current reselection to the proper cell is solved, the problem of overlarge power consumption of terminal equipment caused by frequent execution of cell reselection by the terminal is avoided, and the user experience is further improved.
In a first aspect, the present application provides a cell reselection method, the method comprising: acquiring RSRP values of a plurality of candidate serving cells at the current moment and RSRP values of a previous moment which are preset long from the current moment, wherein the candidate serving cells are predetermined cells which accord with R criteria and S criteria; based on the RSRP value of the current moment and the RSRP value of the previous moment corresponding to each candidate serving cell, obtaining a direction indication parameter corresponding to each candidate serving cell, wherein the direction indication parameter is used for representing the RSRP value change information of the corresponding candidate serving cell from the previous moment to the current moment; and determining the target serving cell according to the RSRP value of each candidate serving cell at the current moment and the corresponding direction indication parameter.
In the implementation process, the direction indication parameters of each service cell are obtained by obtaining the RSRP values of a plurality of candidate service cells at the current moment and the RSRP value of the previous moment preset long from the current moment, so that the terminal can determine the change information of the RSRP values of each candidate service cell according to the direction indication parameters, and then determine the target service cell according to the direction indication parameters of each candidate service cell and the RSRP value of the current moment, so that the change of the RSRP value of the target service cell is stable, the RSPR value is higher, the number of times of cell reselection can be effectively reduced when the terminal moves rapidly, and the problem of hysteresis of the determined target service cell is avoided.
In an embodiment, for each candidate serving cell, subtracting the RSRP value at the current time corresponding to the candidate serving cell from the RSRP value at the previous time to obtain the variation of the RSRP value from the previous time to the current time of the candidate serving cell; dividing the variation by the preset time length to obtain the average variation rate of the RSRP value of the candidate serving cell from the previous time to the current time; constraining the average change rate through a function to obtain a constrained RSRP change rate; and multiplying the constraint RSRP change rate by a preset direction factor to obtain the direction indication parameter of the candidate serving cell.
In the implementation process, the RSRP value at the current time corresponding to each candidate serving cell is subtracted from the RSRP value at the previous time to obtain the variation of the RSRP value, the variation is divided by the preset duration from the previous time to the current time to obtain the average variation rate of the RSRP value of the candidate serving cell from the previous time to the current time, the accuracy of determining the target serving cell is affected by considering that the average variation rate of the RSPR value may be too large, the average variation rate is constrained by a function to obtain the constraint RSRP variation rate, and the value of the constraint RSRP variation rate is adjusted by multiplying the preset direction factor by the constraint RSRP variation rate, so that the value of the direction indication parameter of the target serving cell is determined more accurately.
In an embodiment, the quality score of each candidate serving cell is obtained according to the RSRP value and the direction indication parameter of the current time corresponding to each candidate serving cell; and taking the candidate serving cell with the highest quality score as the target serving cell.
In the implementation process, the quality score of each candidate serving cell is obtained through the RSRP value and the direction indication parameter of the current moment corresponding to each candidate serving cell, and the target candidate serving cell with the highest quality score is used as the target serving cell, so that the signal of the target serving cell reselected by the terminal is stable and has higher strength.
In an embodiment, the SINR value of the candidate serving cell is greater than a preset threshold.
In the implementation process, the fact that the RSRP value of the candidate serving cell is good under certain conditions, but the SINR value is poor is considered, so that the communication service quality of the terminal and the base station is easily affected, the SINR value of the candidate serving cell is compared with a preset threshold value, the SINR value of the finally determined target serving cell is enabled to be larger than the preset threshold value, and the communication service quality of the target serving cell reselected by the terminal is guaranteed.
In a second aspect, the present application provides a cell reselection apparatus, the apparatus comprising: the acquisition module is used for acquiring RSRP values of a plurality of candidate serving cells at the current moment and RSRP values of the previous moment which are preset in a time length from the current moment, wherein the candidate serving cells are predetermined cells which accord with R criteria and S criteria; the obtaining module is further configured to obtain a direction indication parameter corresponding to each candidate serving cell based on the RSRP value of the current time and the RSRP value of the previous time corresponding to each candidate serving cell, where the direction indication parameter is used to characterize RSRP value change information of the corresponding candidate serving cell from the previous time to the current time; and the determining module is used for determining the target serving cell according to the RSRP value of each candidate serving cell at the current moment and the corresponding direction indication parameter.
In an embodiment, the obtaining module is further configured to subtract, for each candidate serving cell, an RSRP value of the current time corresponding to the candidate serving cell and an RSRP value of the previous time, to obtain a change amount of the RSRP value of the candidate serving cell from the previous time to the current time; dividing the variation by the preset time length to obtain the average variation rate of the RSRP value of the candidate serving cell from the previous time to the current time; constraining the average change rate through a function to obtain a constrained RSRP change rate; and multiplying the constraint RSRP change rate by a preset direction factor to obtain the direction indication parameter of the candidate serving cell.
In an embodiment, the determining module is further configured to obtain a quality score of each candidate serving cell according to the RSRP value of the current time and the direction indication parameter corresponding to each candidate serving cell; and taking the candidate serving cell with the highest quality score as the target serving cell.
In an embodiment, the SINR value of the candidate serving cell is greater than a preset threshold.
In a third aspect, the present application provides an electronic device, including a memory and a processor, where the memory stores computer readable instructions that, when executed by the processor, cause the processor to perform the above cell reselection method or implement the function of the above cell reselection apparatus.
In a fourth aspect, a non-volatile readable storage medium stores computer readable instructions that, when executed by a processor, cause the processor to perform the above cell reselection method or to implement the above cell reselection apparatus functionality.
The details of one or more embodiments of the application are set forth in the accompanying drawings and the description below. Other features, objects, and advantages of the application will be apparent from the description and drawings, and from the claims.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a flowchart of a cell reselection method according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a cell reselection apparatus according to an embodiment of the present application;
Fig. 3 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Icon: a cell reselection device 100; an acquisition module 10; a determination module 20.
Detailed Description
The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
Referring to fig. 1, fig. 1 is a flowchart of a method for cell reselection according to an embodiment of the present application, where the method for cell reselection is applied to a terminal. The terminal may be, but is not limited to, a personal computer (Personal Computer, PC), a notebook, a cell phone, a customer premise equipment (Customer Premise Equipment, CPE), etc.
The cell reselection method may include the following steps.
S11, acquiring RSRP values of a plurality of candidate serving cells at the current moment and RSRP values of the previous moment which are preset for a time length from the current moment.
The RSRP (REFERENCE SINGNAL RECEIVED Power, reference signal received Power) is a Common Reference Signal (CRS) Power value of a candidate serving cell received by a terminal, and the value is a linear average value of Power of a single RE (Resource Element) in a measurement bandwidth of the terminal, and is used for responding to the strength of a useful signal of the cell.
In the embodiment of the application, the candidate serving cells are predetermined cells meeting the R criterion and the S criterion, and the preset time length from the current time to the previous time can be set according to specific application scenes.
In particular, the manner in which the candidate serving cell is determined may include the following steps.
S101, acquiring RSRP values of a current serving cell and neighbor cells of the serving cell of the terminal.
S102, judging whether to reselect the cell or not according to the priorities of the serving cell and the adjacent cell and the RSRP values of the serving cell and the adjacent cell.
Specifically, if the serving cell and the neighboring cell are in the same priority, when the RSRP value of the serving cell is greater than or equal to the threshold of the opposite terminal for reselection with the same priority, and the duration is greater than or equal to the threshold duration, cell reselection is performed.
If the priority of the service cell is greater than that of the adjacent cell, when the RSRP value of the adjacent cell is greater than or equal to the threshold of the high priority reselection opposite terminal and the duration is greater than or equal to the threshold duration, cell reselection is performed.
If the priority of the serving cell is smaller than that of the adjacent cell, when the RSRP value of the adjacent cell is larger than the threshold of the low-priority reselection opposite terminal, the RSRP value of the serving cell is larger than the threshold of the low-priority reselection opposite terminal, and the duration is larger than or equal to the threshold duration, cell reselection is carried out.
The method comprises the steps that a high-priority reselection opposite end threshold is an RSRP threshold for carrying out cell reselection when the priority of a serving cell is higher than that of a neighboring cell, an equal-priority reselection opposite end threshold is an RSRP threshold for carrying out cell reselection when the serving cell and the neighboring cell are in the same priority, a low-priority reselection opposite end threshold is an RSRP threshold for carrying out cell reselection when the priority of the serving cell is lower than that of the neighboring cell, and the threshold duration is an RSRP value duration threshold which needs to be met when the threshold duration is the cell reselection. The high-priority reselection opposite end threshold, the equal-priority reselection opposite end threshold, the low-priority reselection opposite end threshold and the threshold duration can be obtained by SIB (System Information Block ) of the terminal, and the threshold duration of each priority condition of the serving cell and the adjacent cell is the same.
And S103, if yes, screening the adjacent cells by using the S criterion and the R criterion to determine candidate serving cells.
The terminal reselects the cells, and the terminal needs to screen each adjacent cell through an S criterion and an R criterion to obtain a candidate serving cell, so that the signal strength of the candidate serving cell obtained through screening is good.
Specifically, the S criterion is srxlev=qrxlevmeas- (qrxlevmin+ Qrxlevminoffset) -Pcompensation, and when Srxlev >0 of a neighboring cell, the cell meets the S criterion.
Where Srxlev is a cell reception level value, qrxlevmeas is a RSRP value of a cell, qrxlevmin and Qrxlevminoffset are both minimum reception levels of cell camping configured in SIB, pcompensation is a maximum value of a difference between an uplink maximum usable transmission power of a terminal minus a terminal maximum radio frequency output power and 0.
R criterion: rs=qmeas, s+qhysts, rn=qmeas, n-Qoffsetn, rn > Rs
Wherein Qmeas s is the RSRP value of the serving cell, qhysts is the cell reselection hysteresis delay value, qmeas, n is the RSRP value of the neighboring cell, qoffsetn is the offset value between the serving cell and the neighboring cell, and Qhysts and Qoffsetn can be obtained through SIB.
The same priority is given to the serving cell and the neighboring cell, including both the same-frequency cell reselection and different-frequency cell reselection.
And when Srxlev is less than or equal to SINTRASEARCH, starting the same-frequency cell reselection, and if the adjacent cells meet Rn > Rs and the duration is longer than or equal to Treselection, reselecting the same-priority same-frequency cell by the terminal.
And when Srxlev is less than or equal to SnonintraSearch, starting the reselection of the inter-frequency cell, and when the duration is longer than or equal to Treselection if the neighbor cell meets Rn > Rs, reselecting the terminal to the same-priority same-frequency cell.
Wherein SINTRASEARCH is the same-frequency measurement threshold, snonintraSearch is the different-frequency measurement threshold, treselection is the time threshold, and SINTRASEARCH, SNONINTRASEARCH, TRESELECTION can be obtained through SIB.
If the priority of the adjacent cell is higher than that of the service cell, srxlev is more than or equal to Threshx, high, the duration is longer than or equal to Treselection, and the terminal reselects to the high priority cell.
Wherein Threshx, high is a high priority reselection threshold.
If the priority of the adjacent cell is lower than that of the serving cell and Srxlev is less than or equal to SnonintraSearch, starting inter-frequency inter-system measurement, and if the Srxlev of the adjacent cell with low priority is more than or equal to Threshx and low and the Srxlev of the serving cell is less than or equal to THRESHSERVING and low, the duration is longer than or equal to Treselection, reselecting the UE to the cell with low priority.
Wherein Threshx, low is a low priority reselection threshold, THRESHSERVING, and low is a service frequency point low priority reselection threshold.
The neighbor cells meeting the S criterion and the R criterion are candidate serving cells.
It should be understood that the manner of acquiring each parameter by the terminal and SIB may be by adopting a prior art approach, which is not described herein in detail.
S12, based on the RSRP value of the current moment and the RSRP value of the previous moment corresponding to each candidate service cell, the direction indication parameter corresponding to each candidate service cell is obtained.
The direction indication parameter is used for representing RSRP value change information from the previous time to the current time of the corresponding candidate serving cell.
In one embodiment, S12 may include the following steps:
S201, subtracting the RSRP value of the candidate serving cell at the current moment and the RSRP value of the previous moment aiming at each candidate serving cell, and obtaining the variation of the RSRP value of the candidate serving cell from the previous moment to the current moment.
Wherein deltanc, j is the variation of the RSRP value of the candidate cell j,For the RSRP value of the current moment corresponding to the candidate serving cell j,/>And presetting an RSRP value of a time t before the current time for the distance corresponding to the candidate serving cell j.
And S202, dividing the variation by the preset time length to obtain the average variation rate of the RSRP value of the candidate serving cell from the previous time to the current time.
Wherein,The Δt is a preset time period from the previous time to the current time, which is an average change rate of RSRP values.
S203, restraining the average change rate through a function to obtain a restrained RSRP change rate.
Where F (Q) is a function, which may be sigmoid, arctan, etc.
It should be noted that the function requirement is to infinitely increase or decrease with the independent variable, and the dependent variable tends to two different parallel asymptotes.
S204, the direction indication parameter of the candidate serving cell is obtained according to the preset direction factor multiplied by the constraint RSRP change rate.
The direction factor characterizes the change of the candidate service cell signals in unit time to characterize the moving direction of the terminal, and the specific value range is related to the selected function.
It can be understood that the average change rate of the RSRP value of each candidate serving cell from the previous time to the current time is obtained by subtracting the RSRP value of the current time from the RSRP value of the previous time, and then dividing the change by the preset time length from the previous time to the current time, so that the accuracy of determining the target serving cell is affected by considering that the average change rate of the RSPR value may be too large, and therefore, the average change rate is constrained by a function to obtain the constrained RSRP change rate, and then the value of the constrained RSRP change rate is adjusted by multiplying the preset direction factor by the constrained RSRP change rate, so that the value of the direction indication parameter of the target serving cell is determined more accurately.
S13, determining the target service cell according to the RSRP value of each candidate service cell at the current moment and the corresponding direction indication parameter.
In one embodiment, S13 includes the following steps.
S301, obtaining the quality score of each candidate service cell according to the RSRP value and the direction indication parameter of the current moment corresponding to each candidate service cell.
And S302, taking the candidate serving cell with the highest quality score as a target serving cell.
It can be understood that, by using the RSRP value and the direction indication parameter of the current moment corresponding to each candidate serving cell, the quality score of each candidate serving cell is obtained, and the target serving cell with the highest quality score is used as the target serving cell, so that the signal of the target serving cell reselected by the terminal is stable and has higher strength.
In one embodiment, the SINR value of the candidate serving cell is greater than a predetermined threshold.
It can be understood that, considering that the RSRP value of the candidate serving cell is better in some cases, but the SINR value is worse, the communication service quality between the terminal and the base station is easily affected, so that the SINR value of the candidate serving cell is compared with a preset threshold, so that the finally determined SINR value of the target serving cell is greater than the preset threshold, and the communication service quality of the target serving cell reselected by the terminal is ensured.
Referring to fig. 2, based on the same inventive concept, an embodiment of the present application further provides a structure diagram of a cell reselection apparatus 100, where the cell reselection apparatus 100 includes: an acquisition module 10 and a determination module 20.
The acquiring module 10 is configured to acquire RSRP values of a plurality of candidate serving cells at a current time and RSRP values of a previous time preset long from the current time, where the candidate serving cells are predetermined cells meeting R criteria and S criteria; the obtaining module 10 is further configured to obtain, based on the RSRP value at the current time and the RSRP value at the previous time corresponding to each candidate serving cell, a direction indication parameter corresponding to each candidate serving cell, where the direction indication parameter is used to characterize RSRP value change information of the corresponding candidate serving cell from the previous time to the current time.
The determining module 20 is configured to determine the target serving cell according to the RSRP value of each candidate serving cell at the current time and the corresponding direction indication parameter.
In an embodiment, the obtaining module 10 is further configured to subtract, for each candidate serving cell, an RSRP value at a current time corresponding to the candidate serving cell and an RSRP value at a previous time, to obtain a variation of the RSRP value of the candidate serving cell from the previous time to the current time; dividing the variation by a preset time length to obtain the average variation rate of the RSRP value of the candidate serving cell from the previous time to the current time; constraint is carried out on the average change rate through a function, and the constraint RSRP change rate is obtained; and obtaining the direction indication parameters of the candidate serving cells according to the preset direction factors multiplied by the constraint RSRP change rate.
In an embodiment, the determining module 20 is further configured to obtain a quality score of each candidate serving cell according to the RSRP value and the direction indication parameter of the current time corresponding to each candidate serving cell; and taking the candidate serving cell with the highest quality score as a target serving cell.
In one embodiment, the SINR value of the candidate serving cell is greater than a predetermined threshold.
It can be understood that the cell reselection device 100 provided by the present application corresponds to the cell reselection method provided by the present application, and for brevity of description, the same or similar parts may refer to the content of the cell reselection method part, and will not be described herein again.
The respective modules in the cell reselection apparatus 100 described above may be implemented in whole or in part by software, hardware, and a combination thereof. The above modules may be embedded in hardware or independent of a processor in a server, or may be stored in software in a memory in the server, so that the processor may call and execute operations corresponding to the above modules. The processor may be a Central Processing Unit (CPU), microprocessor, single-chip microcomputer, etc.
The cell reselection method and/or the cell reselection apparatus 100 described above may be implemented in the form of a computer readable instruction that may be executed on an electronic device as shown in fig. 3.
The embodiment of the application also provides electronic equipment which comprises a memory, a processor and computer readable instructions stored on the memory and capable of running on the processor, wherein the processor realizes the cell reselection method when executing the program.
Fig. 3 is a schematic diagram illustrating an internal structure of an electronic device according to an embodiment of the present application, which may be a server. Referring to fig. 3, the electronic device includes a processor, a nonvolatile storage medium, an internal memory, an input device, a display screen, and a network interface connected by a system bus. The non-volatile storage medium of the electronic device may store an operating system and computer readable instructions, where the computer readable instructions, when executed, may cause the processor to perform a cell reselection method according to embodiments of the present application, and a specific implementation process of the method may refer to fig. 1, which is not repeated herein. The processor of the electronic device is configured to provide computing and control capabilities to support the operation of the entire electronic device. The internal memory may have stored therein computer readable instructions that, when executed by the processor, cause the processor to perform a cell reselection method. The input device of the electronic equipment is used for inputting various parameters, the display screen of the electronic equipment is used for displaying, and the network interface of the electronic equipment is used for carrying out network communication. It will be appreciated by those skilled in the art that the structure shown in fig. 3 is merely a block diagram of a portion of the structure associated with the present inventive arrangements and is not limiting of the electronic device to which the present inventive arrangements are applied, and that a particular electronic device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
Based on the same inventive concept, an embodiment of the present application provides a computer readable storage medium having computer readable instructions stored thereon, which when executed by a processor, implement the steps in the cell reselection method described above.
Any reference to memory, storage, database, or other medium as used herein may include non-volatile. Suitable nonvolatile memory can include Read Only Memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed.
Further, the units described as separate units may or may not be physically separate, and units displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
Furthermore, functional modules in various embodiments of the present application may be integrated together to form a single portion, or each module may exist alone, or two or more modules may be integrated to form a single portion.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and variations will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (6)
1. A cell reselection method, applied to a user terminal, comprising:
acquiring RSRP values of a plurality of candidate serving cells at the current moment and RSRP values of a previous moment which are preset long from the current moment, wherein the candidate serving cells are predetermined cells which accord with R criteria and S criteria;
Based on the RSRP value of the current moment and the RSRP value of the previous moment corresponding to each candidate serving cell, obtaining a direction indication parameter corresponding to each candidate serving cell, wherein the direction indication parameter is used for representing the RSRP value change information of the corresponding candidate serving cell from the previous moment to the current moment;
Determining a target serving cell according to the RSRP value of each candidate serving cell at the current moment and the corresponding direction indication parameter;
the direction indication parameters corresponding to the candidate service cells are obtained based on the RSRP value of the current moment and the RSRP value of the previous moment corresponding to the candidate service cells; determining a target serving cell according to the RSRP value of each candidate serving cell at the current moment and the corresponding direction indication parameter, including:
Subtracting the RSRP value of the current moment corresponding to each candidate serving cell from the RSRP value of the previous moment aiming at each candidate serving cell to obtain the variation of the RSRP value of the candidate serving cell from the previous moment to the current moment;
dividing the variation by the preset time length to obtain the average variation rate of the RSRP value of the candidate serving cell from the previous time to the current time;
Constraining the average change rate through a function to obtain a constrained RSRP change rate; wherein the function requirement is infinitely increasing or decreasing with the independent variable, which tends to two different parallel asymptotes;
Multiplying the constraint RSRP change rate by a preset direction factor to obtain the direction indication parameter of the candidate serving cell; the direction factor represents the change of the candidate service cell signals in unit time to represent the moving direction of the terminal;
Obtaining quality scores of the candidate service cells according to the RSRP value of the current moment and the direction indication parameter corresponding to the candidate service cells;
And taking the candidate serving cell with the highest quality score as the target serving cell.
2. The cell reselection method of claim 1, wherein the SINR value of the candidate serving cell is greater than a preset threshold.
3. A cell reselection apparatus, comprising:
the acquisition module is used for acquiring RSRP values of a plurality of candidate serving cells at the current moment and RSRP values of the previous moment which are preset in a time length from the current moment, wherein the candidate serving cells are predetermined cells which accord with R criteria and S criteria;
The obtaining module is further configured to obtain a direction indication parameter corresponding to each candidate serving cell based on the RSRP value of the current time and the RSRP value of the previous time corresponding to each candidate serving cell, where the direction indication parameter is used to characterize RSRP value change information of the corresponding candidate serving cell from the previous time to the current time;
The determining module is used for determining the target serving cell according to the RSRP value of each candidate serving cell at the current moment and the corresponding direction indication parameter;
The obtaining module is further configured to subtract, for each candidate serving cell, the RSRP value of the current time corresponding to the candidate serving cell and the RSRP value of the previous time, to obtain a variable quantity of the RSRP value of the candidate serving cell from the previous time to the current time; dividing the variation by the preset time length to obtain the average variation rate of the RSRP value of the candidate serving cell from the previous time to the current time; constraining the average change rate through a function to obtain a constrained RSRP change rate; multiplying the constraint RSRP change rate by a preset direction factor to obtain the direction indication parameter of the candidate serving cell; the direction factor represents the change of the candidate service cell signals in unit time to represent the moving direction of the terminal; the function requirement is that the independent variable is infinitely increased or decreased, and the independent variable tends to two different parallel asymptotes;
the determining module is further configured to obtain a quality score of each candidate serving cell according to the RSRP value of the current time and the direction indication parameter corresponding to each candidate serving cell; and taking the candidate serving cell with the highest quality score as the target serving cell.
4. The cell reselection apparatus of claim 3 wherein the SINR value of the candidate serving cell is greater than a preset threshold.
5. An electronic device comprising a memory and a processor, the memory having stored therein computer readable instructions that, when executed by the processor, cause the processor to perform the cell reselection method of any of claims 1-2 or to implement the functionality of the cell reselection apparatus of any of claims 3-4.
6. A non-transitory readable storage medium storing computer readable instructions which, when executed by a processor, cause the processor to perform the cell reselection method of any of claims 1-2 or to implement the functionality of the cell reselection apparatus of any of claims 3-4.
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| CN202210572546.9A CN114760666B (en) | 2022-05-24 | 2022-05-24 | Cell reselection method, device, electronic equipment and storage medium |
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| CN109862598B (en) * | 2017-11-30 | 2021-04-20 | 中国电信股份有限公司 | Cell reselection method, device and computer readable storage medium |
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| CN114760666B (en) * | 2022-05-24 | 2024-05-03 | 上海移远通信技术股份有限公司 | Cell reselection method, device, electronic equipment and storage medium |
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