CN115396968B - Cell switching method, device, server and storage medium - Google Patents

Cell switching method, device, server and storage medium Download PDF

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Publication number
CN115396968B
CN115396968B CN202211024406.4A CN202211024406A CN115396968B CN 115396968 B CN115396968 B CN 115396968B CN 202211024406 A CN202211024406 A CN 202211024406A CN 115396968 B CN115396968 B CN 115396968B
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cell
grid
preset
network
network quality
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CN115396968A (en
Inventor
狄子翔
只璐
朱佳佳
乔金剑
刘亮
吕非彼
李�一
王云云
肖天
程新洲
程丽君
翟金羽
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/08—Reselecting an access point
    • 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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a cell switching method, a device, a server and a storage medium, relates to the technical field of communication, and solves the technical problems that a server switches a serving cell of UE into another type of cell whenever the signal intensity of one type of cell is smaller, frequent switching of the serving cell can be caused, and the stability of communication service cannot be guaranteed. The method comprises the following steps: determining a difference score for characterizing a difference between the network quality of the first cell and the network quality of the second cell; adjusting an initial switching threshold value to obtain a target switching threshold value in response to the difference score being outside a preset numerical range; and switching the serving cell of the UE to the second cell in response to the serving cell of the UE being the first cell and a preset time length being longer than or equal to a time length threshold, wherein the preset time length is a time length of which the signal strength of the first cell is smaller than or equal to the target switching threshold.

Description

Cell switching method, device, server and storage medium
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a cell handover method, a device, a server, and a storage medium.
Background
Currently, a serving cell of a User Equipment (UE) may be a 4G cell or a 5G cell. When the serving cell of the UE is a 4G cell and the signal strength of the 4G cell is small, the server may switch the serving cell to the 5G cell; when the serving cell of the UE is a 5G cell and the signal strength of the 5G cell is small, the server may switch the serving cell to the 4G cell.
However, in the above method, since the signal strength of the 4G cell and the signal strength of the 5G cell change at any time, the server switches the serving cell of the UE to another type of cell (e.g., 5G cell) whenever the signal strength of one type of cell (e.g., 4G cell) is small, which may cause frequent switching of the serving cell, and thus the stability of the communication service cannot be ensured.
Disclosure of Invention
The invention provides a cell switching method, a cell switching device, a server and a storage medium, which solve the technical problems that the server can switch a serving cell of UE into another type of cell whenever the signal intensity of one type of cell is smaller, frequent switching of the serving cell can be caused, and the stability of communication service cannot be ensured.
In a first aspect, the present invention provides a cell handover method, including: determining a difference score, the difference score being used to characterize a difference between the network quality of a first cell and the network quality of a second cell, the network system of the first cell being different from the network system of the second cell; adjusting an initial switching threshold value to obtain a target switching threshold value in response to the difference score being outside a preset numerical range; and switching the serving cell of the UE to the second cell in response to the serving cell of the UE being the first cell and a preset time period being longer than or equal to a time period threshold, wherein the preset time period is a time period when the signal strength of the first cell is smaller than or equal to the target switching threshold.
Optionally, before determining the difference score, the cell handover method further includes: obtaining minimization of drive tests (minimization of drive tests, MDT) data of the first cell, the MDT data comprising at least one location information; performing rasterization processing on a target area, and determining at least one grid from a plurality of grids, wherein the plurality of grids are grids included in the target area, the position information of the at least one grid is the same as the at least one position information, and the target area comprises the first cell and the second cell; determining first network data of each grid and second network data of each grid in the at least one grid, wherein the first network data of one grid comprises a first radio resource control (radio resource control, RRC) reestablishment times corresponding to the position information of the grid and a first media access control (media access control, MAC) layer rate corresponding to the position information of the grid, the first RRC reestablishment times being RRC reestablishment times in the first cell, the first MAC layer rate being MAC layer rate in the first cell, the second network data of one grid comprises a second RRC reestablishment times corresponding to the position information of the grid and a second MAC layer rate corresponding to the position information of the grid, the second RRC reestablishment times being RRC reestablishment times in the second cell, the second MAC layer rate being MAC layer rate in the second cell; determining a network quality score for the first cell from the first network data for each grid and determining a network quality score for the second cell from the second network data for each grid, wherein the network quality score for a cell is used to characterize the network quality of the cell; the determining the difference score specifically includes: the difference score is determined based on the network quality score of the first cell and the network quality score of the second cell.
Optionally, the MDT data further includes a timestamp corresponding to each piece of location information in the at least one piece of location information, and the cell handover method further includes: acquiring a first corresponding relation, wherein the first corresponding relation comprises a plurality of network data of the first cell and time stamps corresponding to the plurality of network data; the determining the first network data of the preset grid specifically includes: determining preset network data as first network data of the preset grid, wherein the preset network data is network data with the smallest difference value between corresponding time stamps and preset time stamps in the plurality of network data, the preset time stamp is a time stamp corresponding to preset position information, the preset position information is one of the at least one position information, the preset grid is one of the at least one grid, and the position information of the preset grid is the same as the preset position information.
Optionally, the determining the difference score according to the network quality score of the first cell and the network quality score of the second cell specifically includes:
determining that the difference score satisfies the following formula:
wherein F represents the difference score, F 1 A network quality score, f, representing the first cell 2 Representing a network quality score for the second cell.
Optionally, the adjusting the initial handover threshold to obtain the target handover threshold specifically includes: responding to the difference score being greater than a first threshold value, wherein the network quality of the second cell is better than that of the first cell, and increasing the initial switching threshold value according to a preset step length to obtain a target switching threshold value, wherein the first threshold value is the maximum value within the preset numerical range; and in response to the difference score being smaller than a second threshold, and the network quality of the first cell being better than the network quality of the second cell, reducing the initial handover threshold according to the preset step length to obtain a target handover threshold, wherein the second threshold is the minimum value within the preset numerical range.
In a second aspect, the present invention provides a cell switching apparatus, including: a determining module and a processing module; the determining module is used for determining a difference score, wherein the difference score is used for representing the difference between the network quality of a first cell and the network quality of a second cell, and the network system of the first cell is different from the network system of the second cell; the processing module is used for adjusting an initial switching threshold value to obtain a target switching threshold value in response to the difference score being out of a preset numerical range; the processing module is further configured to switch the serving cell of the UE to the second cell in response to the serving cell of the UE being the first cell and a preset time period being a duration time period in which the signal strength of the first cell is less than or equal to the target switching threshold.
Optionally, the cell switching device further includes: an acquisition module; the obtaining module is configured to obtain MDT data of the first cell, where the MDT data includes at least one location information; the processing module is further used for rasterizing a target area, wherein the target area comprises the first cell and the second cell; the determining module is further configured to determine at least one grid from a plurality of grids, where the plurality of grids are grids included in the target area, and position information of the at least one grid is the same as the at least one position information; the determining module is further configured to determine first network data of each grid and second network data of each grid in the at least one grid, where the first network data of one grid includes a first RRC reestablishment number corresponding to location information of the grid and a first MAC layer rate corresponding to location information of the grid, the first RRC reestablishment number is an RRC reestablishment number in the first cell, the first MAC layer rate is an MAC layer rate in the first cell, the second network data of one grid includes a second RRC reestablishment number corresponding to location information of the grid and a second MAC layer rate corresponding to location information of the grid, the second RRC reestablishment number is an RRC reestablishment number in the second cell, and the second MAC layer rate is an MAC layer rate in the second cell; the determining module is further configured to determine a network quality score of the first cell according to the first network data of each grid, and determine a network quality score of the second cell according to the second network data of each grid, where the network quality score of one cell is used to characterize the network quality of the cell; the determining module is specifically configured to determine the difference score according to the network quality score of the first cell and the network quality score of the second cell.
Optionally, the MDT data further includes a timestamp corresponding to each location information in the at least one location information; the acquiring module is further configured to acquire a first correspondence, where the first correspondence includes a plurality of network data of the first cell and time stamps corresponding to the plurality of network data; the determining module is specifically further configured to determine preset network data as first network data of the preset grid, where the preset network data is network data with a smallest difference between corresponding timestamps and preset timestamps in the plurality of network data, the preset timestamp is a timestamp corresponding to preset location information, the preset location information is one of the at least one location information, the preset grid is one of the at least one grid, and the location information of the preset grid is the same as the preset location information.
Optionally, the determining module is specifically further configured to determine that the difference score satisfies the following formula:
wherein F represents the difference score, F 1 A network quality score, f, representing the first cell 2 Representing a network quality score for the second cell.
Optionally, the processing module is specifically configured to increase the initial handover threshold according to a preset step size to obtain a target handover threshold in response to the difference score being greater than a first threshold, and the network quality of the second cell is better than the network quality of the first cell, where the first threshold is a maximum value within the preset numerical range; the processing module is specifically further configured to reduce the initial handover threshold according to the preset step length in response to the difference score being smaller than a second threshold, and the network quality of the first cell is better than the network quality of the second cell, so as to obtain a target handover threshold, where the second threshold is a minimum value within the preset numerical range.
In a third aspect, the present invention provides a server comprising: a processor and a memory configured to store processor-executable instructions; wherein the processor is configured to execute the instructions to implement any of the above-described alternative cell handover methods of the first aspect.
In a fourth aspect, the present invention provides a computer readable storage medium having instructions stored thereon which, when executed by a server, enable the server to perform any one of the above-described alternative cell handover methods of the first aspect.
The cell switching method, the device, the server and the storage medium provided by the invention can determine the difference score, wherein the difference score is used for representing the difference between the network quality of the first cell and the network quality of the second cell. And in response to the difference score being outside the preset numerical range, indicating that the network quality of the first cell and the network quality of the second cell are greatly different, at this time, the server can adjust the initial handover threshold value to obtain the target handover threshold value. Then, in response to the serving cell of the UE being the first cell, and the preset duration (i.e., the duration that the signal strength of the first cell is less than or equal to the target handover threshold) being greater than or equal to the duration threshold, it is indicated that the serving cell of the UE (i.e., the first cell) is continuously in a state that the signal strength is lower, and at this time, the server may handover the serving cell of the UE to the second cell. In the invention, when the network quality of the first cell and the network quality of the second cell are greatly different, the server can adjust the initial switching threshold value to obtain the target switching threshold value; and because the server can determine whether to switch the service cell to other cells based on the target switching threshold and the signal strength of the service cell, particularly, in response to the signal strength of the service cell being less than or equal to the duration time length of the target switching threshold being greater than or equal to the duration time length threshold, the server switches the service cell to other cells, so that frequent switching of the service cell can be avoided, and the stability of communication service is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below.
Fig. 1 is a schematic flow chart of a cell handover method according to an embodiment of the present invention;
fig. 2 is a flow chart of another cell handover method according to an embodiment of the present invention;
fig. 3 is a flow chart of another cell handover method according to an embodiment of the present invention;
fig. 4 is a flowchart of another cell handover method according to an embodiment of the present invention;
fig. 5 is a flowchart of another cell handover method according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a cell switching device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another cell switching apparatus according to an embodiment of the present invention.
Detailed Description
The cell handover method, device, server and storage medium provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The terms "first" and "second" and the like in the description and in the drawings are used for distinguishing between different objects and not for describing a particular sequential order of objects, e.g., a first cell and a second cell and the like are used for distinguishing between different cells and not for describing a particular sequential order of cells.
Furthermore, references to the terms "comprising" and "having" and any variations thereof in the description of the present application are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed but may optionally include other steps or elements not listed or inherent to such process, method, article, or apparatus.
It should be noted that, in the embodiments of the present invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment of the present invention is not to be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.
The term "and/or" as used herein includes the use of either or both of these methods.
In the description of the present application, unless otherwise indicated, the meaning of "a plurality" means two or more.
Based on the description in the background art, since in the related art, the server switches the serving cell of the UE to another type of cell (e.g. 5G cell) whenever the signal strength of one type of cell (e.g. 4G cell) is small, frequent switching of the serving cell may be caused, and stability of communication service cannot be guaranteed. Based on this, the embodiment of the invention provides a cell switching method, a device, a server and a storage medium, when the network quality of a first cell and the network quality of a second cell are greatly different, the server can adjust an initial switching threshold value to obtain a target switching threshold value; and because the server can determine whether to switch the service cell to other cells based on the target switching threshold and the signal strength of the service cell, particularly, in response to the signal strength of the service cell being less than or equal to the duration time length of the target switching threshold being greater than or equal to the duration time length threshold, the server switches the service cell to other cells, so that frequent switching of the service cell can be avoided, and the stability of communication service is ensured.
The cell switching method, the device, the server and the storage medium provided by the embodiment of the invention are applied to a scene of cell switching. And in response to the difference score being outside the preset numerical range, the server may adjust the initial handover threshold to obtain a target handover threshold. Then, in response to the serving cell of the UE being the first cell and the preset duration (i.e., the duration that the signal strength of the first cell is less than or equal to the target handover threshold) being greater than or equal to the duration threshold, the server may handover the serving cell of the UE to the second cell.
As shown in fig. 1, the cell handover method provided in the embodiment of the present invention may include S101-S103.
S101, the server determines a difference score.
The difference score is used for representing the difference between the network quality of the first cell and the network quality of the second cell, and the network system of the first cell is different from the network system of the second cell.
In one implementation of the embodiment of the present invention, the network quality of a cell may include the signal strength of the cell, the transmission rate of the cell, the transmission delay of the cell, the jitter of the cell, and so on. The server may determine a difference between the signal strength of the first cell and the signal strength of the second cell as the difference score.
Illustratively, the network system of the first cell may be a 4G network, and the network system of the second cell may be a 5G network. The embodiment of the invention does not limit the network system of the first cell and the network system of the second cell in particular.
S102, the server responds to the fact that the difference score is out of a preset numerical range, and adjusts an initial switching threshold value to obtain a target switching threshold value.
It will be appreciated that the server may be understood that in response to the difference score being outside of the preset range of values, the server may be understood as if the difference score is outside of the preset range of values.
It should be appreciated that in the case where the difference score is outside the preset range, it is indicated that the difference between the network quality of the first cell and the network quality of the second cell is large, and at this time, the server may adjust the initial handover threshold to obtain the target handover threshold.
Alternatively, the server may specifically adjust the initial handover threshold by increasing or decreasing the initial handover threshold.
S103, the server responds that the serving cell of the UE is a first cell, and the preset time length is greater than or equal to a time length threshold value, and the serving cell of the UE is switched to a second cell.
It may be understood that, in response to the serving cell of the UE being the first cell and the preset time period being greater than or equal to the duration threshold, the server may be understood as in the case where the serving cell of the UE is the first cell and the preset time period is greater than or equal to the duration threshold.
The preset duration is a duration that the signal strength of the first cell is less than or equal to the target handover threshold.
It should be appreciated that when the signal strength of the first cell is less than or equal to the target handover threshold, it is indicated that the signal strength of the first cell is lower. When the preset time length is greater than or equal to a time length threshold value, the duration time that the signal strength of the first cell is lower is longer, namely the first cell is continuously in a state that the signal strength is lower; also, since the first cell is a serving cell of the UE, at this time, the server may switch the serving cell of the UE to the second cell, specifically from the first cell to (or redirected to) the second cell.
In an alternative implementation manner, when the serving cell of the UE is the first cell and the preset duration is less than the duration threshold, it is indicated that the serving cell of the UE (i.e., the first cell) is not continuously in a state with low signal strength, and the server may determine that the serving cell of the UE remains unchanged.
For example, the time period threshold may be 1min (minute).
In an implementation manner of the embodiment of the present invention, when the difference score is within a preset numerical range, it indicates that a difference between the network quality of the first cell and the network quality of the second cell is small, and the server may determine that the initial handover threshold remains unchanged, and determine whether to handover the serving cell of the UE to another cell based on the initial handover threshold. Specifically, in the case that the serving cell of the UE is a first cell, and the target duration (i.e., the duration of time that the signal strength of the first cell is less than or equal to the initial handover threshold) is greater than or equal to the duration threshold, the server may handover the serving cell of the UE to the second cell.
The technical scheme provided by the embodiment at least has the following beneficial effects: from S101-S103, the server may determine a difference score, which is used to characterize the difference between the network quality of the first cell and the network quality of the second cell. And in response to the difference score being outside the preset numerical range, indicating that the network quality of the first cell and the network quality of the second cell are greatly different, at this time, the server can adjust the initial handover threshold value to obtain the target handover threshold value. Then, in response to the serving cell of the UE being the first cell, and the preset duration (i.e., the duration that the signal strength of the first cell is less than or equal to the target handover threshold) being greater than or equal to the duration threshold, it is indicated that the serving cell of the UE (i.e., the first cell) is continuously in a state that the signal strength is lower, and at this time, the server may handover the serving cell of the UE to the second cell. In the invention, when the network quality of the first cell and the network quality of the second cell are greatly different, the server can adjust the initial switching threshold value to obtain the target switching threshold value; and because the server can determine whether to switch the service cell to other cells based on the target switching threshold and the signal strength of the service cell, particularly, in response to the signal strength of the service cell being less than or equal to the duration time length of the target switching threshold being greater than or equal to the duration time length threshold, the server switches the service cell to other cells, so that frequent switching of the service cell can be avoided, and the stability of communication service is ensured.
Referring to fig. 1, as shown in fig. 2, before the server determines the difference score, the cell switching method provided by the embodiment of the present invention further includes: S104-S107.
S104, the server acquires MDT data of the first cell.
Wherein the MDT data includes at least one location information.
In an alternative implementation, the server may obtain trace data (link data) of the first cell, and obtain MDT data of the first cell from the trace data of the first cell.
In the embodiment of the invention, each piece of position information in the at least one piece of position information can be characterized in a longitude and latitude form.
Alternatively, the server may further obtain trace data of the second cell, and obtain MDT data of the second cell from the trace data of the second cell, and so on.
S105, the server performs rasterization processing on the target area, and determines at least one grid from the grids.
The plurality of grids are grids included in the target area, the position information of the at least one grid is the same as the at least one position information, and the target area includes the first cell and the second cell.
It should be understood that the server performs rasterization processing on the target area, that is, divides the target area into the multiple grids.
It is understood that, for the above-described plurality of grids, one grid corresponds to one position information. After acquiring each of the at least one location information (specifically, at least one location information included in the MDT data of the first cell), the server may determine a grid corresponding to the same location information as the at least one location information from the plurality of grids, and determine the grid corresponding to the same location information as the at least one grid.
Alternatively, the server may divide the target area into square grids of equal size. By way of example, a square grid may have a side length of 1m (meter).
S106, the server determines the first network data of each grid and the second network data of each grid in at least one grid.
The first network data of one grid comprises a first RRC reconstruction times corresponding to the position information of the grid and a first MAC layer rate corresponding to the position information of the grid, wherein the first RRC reconstruction times are RRC reconstruction times in the first cell, the first MAC layer rate is the MAC layer rate in the first cell, the second network data of one grid comprises a second RRC reconstruction times corresponding to the position information of the grid and a second MAC layer rate corresponding to the position information of the grid, the second RRC reconstruction times are RRC reconstruction times in the second cell, and the second MAC layer rate is the MAC layer rate in the second cell.
It should be understood that the number of RRC reestablishments for a certain cell is the number of RRC connection reestablishments in that cell. Specifically, the initial RRC state of the UE in the cell may be a connected state, but the RRC state of the UE in the cell may be a disconnected state for some reason, and a procedure of reestablishing the RRC connection between the UE and the cell needs to be performed.
In the embodiment of the invention, the more the number of RRC reestablishment times (including the first number of RRC reestablishment times corresponding to the position information of the grid and the second number of RRC reestablishment times corresponding to the position information of the grid) corresponding to one grid, the worse the network quality corresponding to the grid is indicated.
In the embodiment of the present invention, the MAC layer rate corresponding to one of the grids (including the first MAC layer rate corresponding to the location information of the grid and the second MAC layer rate corresponding to the location information of the grid) may represent the rate at which data transmission is performed in the grid. The greater the MAC layer rate corresponding to the grid, the greater the rate at which data transmission occurs within the grid, i.e., the better the network quality corresponding to the grid.
In one implementation of the embodiment of the present invention, one MAC layer rate may include a MAC layer upstream rate and a MAC layer downstream rate. Specifically, the first MAC layer rate corresponding to the location information of the one grid includes a first MAC layer uplink rate corresponding to the location information of the grid and a first MAC layer downlink rate corresponding to the location information of the grid.
In an optional implementation manner, the trace data of the first cell may further include the RRC reestablishment number of the first cell and the MAC layer rate of the first cell, and the trace data of the second cell may include the RRC reestablishment number of the second cell and the MAC layer rate of the second cell. The server may determine the first network data of each of the at least one grid from the trace data of the first cell and determine the second network data of each of the grids from the trace data of the second cell.
S107, the server determines a network quality score of the first cell according to the first network data of each grid, and determines a network quality score of the second cell according to the second network data of each grid.
Wherein the network quality score of a cell is used to characterize the network quality of the cell.
In the embodiment of the present invention, the server may determine the first network quality score of each grid according to the first network data of each grid, and further determine the network quality score of the first cell according to the first network quality score of each grid.
In an implementation manner of the embodiment of the present invention, the server may allocate a first weight for a first RRC reestablishment number corresponding to the location information of each grid included in the first network data of each grid, and allocate a second weight for a first MAC layer rate corresponding to the location information of each grid, and then determine a first network quality score of each grid according to the first RRC reestablishment number corresponding to the location information of each grid, the first MAC layer rate corresponding to the location information of each grid, the first weight, and the second weight.
Optionally, the server may determine that the first network quality score of the ith grid satisfies the following formula:
Q i ＝R i ×ω 1 +M i ×ω 2
wherein Q is i A first network quality score representing the ith grid, R i Indicating the number of times, ω, of the first RRC reestablishment corresponding to the position information of the ith cell 1 Represents the first weight, M i Representing a first MAC layer rate, ω, corresponding to the position information of the ith trellis 2 And the second weight, i.gtoreq.1.
Optionally, the first MAC layer rate corresponding to the location information of each grid may include a first MAC layer uplink rate corresponding to the location information of each grid and a first MAC layer downlink rate corresponding to the location information of each grid, and the server may further determine a first network quality score of each grid according to the first MAC layer uplink rate corresponding to the location information of each grid, the first MAC layer downlink rate corresponding to the location information of each grid, and the first RRC reestablishment number corresponding to the location information of each grid.
In another implementation manner of the embodiment of the present invention, the server may also determine, as the first network quality score of the grid, the first RRC reestablishment number corresponding to the location information of the grid and the average value of the first MAC layer rate corresponding to the location information of the grid.
Alternatively, the server may determine an average value of the first network quality score of each of the at least one grid as the network quality score of the first cell.
In the embodiment of the present invention, the server may determine that the network quality score of the first cell satisfies the following formula:
wherein f 1 Representing the network quality score, Q, of the first cell i A first network mass fraction representing an ith grid, m representing the number of the at least one grid, i being greater than or equal to 1, m being greater than or equal to 1.
It should be noted that, the process of determining the network quality score of the second cell by the server is the same as or similar to the process of determining the network quality score of the first cell by the server, which is not described herein.
Continuing with fig. 2, the server determines a difference score, specifically including S1011.
S1011, the server determines a difference score according to the network quality score of the first cell and the network quality score of the second cell.
In connection with the description of the above embodiments, it should be understood that the network quality score of a cell is used to characterize the network quality of that cell. After determining the network quality score of the first cell and the network quality score of the second cell, the server may determine the difference score based on the network quality of the first cell and the network quality of the second cell, i.e. determine the difference between the network quality of the first cell and the network quality of the second cell.
In an alternative implementation, the server may determine a difference between the network quality score of the first cell and the network quality score of the second cell as the difference score.
In another alternative implementation manner, the server may further assign a weight (hereinafter referred to as a third weight) to the network quality score of the first cell, and assign a weight (hereinafter referred to as a fourth weight) to the network quality score of the second cell; the server may then determine a difference between a first value (i.e., the product between the network quality score of the first cell and the third weight) and a second value (i.e., the product between the network quality score of the second cell and the fourth weight) as the difference score.
Referring to fig. 2, as shown in fig. 3, in an implementation manner of the embodiment of the present invention, the determining, by the server, the difference score may specifically include S1011a according to the network quality score of the first cell and the network quality score of the second cell.
S1011a, the server determines that the difference score satisfies the following formula:
wherein F represents a difference score, F 1 Representing a network quality score of a first cell, f 2 Representing a network quality score for the second cell.
In an implementation manner of the embodiment of the present invention, the MDT data of the first cell further includes a timestamp corresponding to each piece of location information in the at least one piece of location information. Referring to fig. 2, as shown in fig. 4, the cell handover method provided in the embodiment of the present invention further includes S108.
S108, the server acquires the first corresponding relation.
The first correspondence includes a plurality of network data of the first cell and time stamps corresponding to the plurality of network data.
Continuing with fig. 4, the server determines the first network data of the preset grid, specifically including S1061.
S1061, the server determines the preset network data as the first network data of the preset grid.
The preset network data is network data with the smallest difference between a corresponding timestamp and a preset timestamp in the plurality of network data, the preset timestamp is a timestamp corresponding to preset position information, the preset position information is one of the at least one position information, the preset grid is one of the at least one grid, and the position information of the preset grid is the same as the preset position information.
In connection with the description of the above embodiments, it should be understood that, since the MDT data further includes a time stamp corresponding to each of the at least one location information. After acquiring the first correspondence (specifically, the time stamp corresponding to each of the plurality of network data included in the first correspondence), the server may determine a difference between the time stamp corresponding to each of the plurality of network data and the time stamp corresponding to the preset location information (i.e., the preset time stamp), and determine the network data with the smallest difference (i.e., the preset network data) as the first network data of the preset grid.
In the embodiment of the present invention, when the difference between the timestamp corresponding to one network data in the plurality of network data and the preset timestamp (i.e., the timestamp corresponding to the preset location information) is minimum, it is indicated that the reporting time of the network data is closest to the reporting time of the preset location information, and at this time, the server may determine the network data as the preset network data. And because the position information of the preset grid is the same as the preset position information, the server can determine the preset network data as the first network data of the preset grid.
For example, table 1 below is an example of a first correspondence provided in an embodiment of the present invention.
As shown in table 1, the first correspondence relationship includes 3 network data (i.e., network data 1, network data 2, and network data 3) and time stamps corresponding to the 3 network data; specifically, the timestamp corresponding to the network data 1 is 12:00:00, the timestamp corresponding to the network data 2 is 12:00:10, and the timestamp corresponding to the network data 3 is 12:00:15.
TABLE 1
Network data Time stamp
Network data 1 12:00:00
Network data 2 12:00:10
Network data 3 12:00:15
Assuming that the predetermined timestamp is 12:00:08, the server determines that the network data 2 is the predetermined network data, that is, the network data 2 is the first network data of the predetermined grid.
Referring to fig. 1, as shown in fig. 5, in an implementation manner of the embodiment of the present invention, the server adjusts an initial handover threshold to obtain a target handover threshold, which may specifically include S1021-S1022.
S1021, the server responds to the fact that the difference score is larger than the first threshold value, the network quality of the second cell is better than that of the first cell, and the initial switching threshold value is increased according to a preset step length to obtain the target switching threshold value.
The first threshold is a maximum value within the preset numerical range.
It is understood that the server is responsive to the difference score being greater than the first threshold and the network quality of the second cell being better than the network quality of the first cell, it is understood that in the event that the difference score is greater than the first threshold and the network quality of the second cell is better than the network quality of the first cell.
It should be appreciated that when the difference score is greater than the first threshold, it is indicated that the difference score is outside the predetermined range, i.e., the difference between the network quality of the first cell and the network quality of the second cell is greater. And because the network quality of the second cell is better than that of the first cell, the network quality of the second cell is far better than that of the first cell. At this time, the server may increase the initial switching threshold according to a preset step, that is, the obtained target switching threshold is greater than the initial switching threshold.
In the embodiment of the present invention, the target handover threshold may be understood as a signal strength threshold, and the server may determine whether to handover the serving cell of the UE to another cell based on the signal strength threshold. Since the target handover threshold is greater than the initial handover threshold, the server may more easily implement a handover procedure of the serving cell of the UE based on the signal strength of the serving cell and the target handover threshold, i.e., the server more easily switches the serving cell of the UE to other cells.
Alternatively, the predetermined step size may be 1 decibel milliwatt (decibel relative to one milliwatt, dbm).
And S1022, the server responds to the fact that the difference score is smaller than the second threshold value, and the network quality of the first cell is better than that of the second cell, and the initial switching threshold value is reduced according to a preset step length to obtain a target threshold value.
The first threshold is a minimum value within the preset numerical range.
It is understood that the server is responsive to the difference score being less than the second threshold and the network quality of the first cell being better than the network quality of the second cell, it is understood that in the event that the difference score is less than the second threshold and the network quality of the first cell is better than the network quality of the second cell.
It should be appreciated that when the difference score is less than the second threshold, it is indicated that the difference score is outside the predetermined range, i.e. the difference between the network quality of the first cell and the network quality of the second cell is large. And when the network quality of the first cell is better than that of the second cell, the network quality of the first cell is far better than that of the second cell. At this time, the server may reduce the initial switching threshold according to a preset step length, that is, the obtained target switching threshold is smaller than the initial switching threshold.
In connection with the above description of the embodiments, it should be understood that the target handover threshold may be understood as a signal strength threshold, and the server may determine whether to handover the serving cell of the UE to another cell based on the signal strength threshold. When the target switching threshold is smaller than the initial switching threshold, the server may be more difficult to realize the switching process of the serving cell of the UE based on the signal strength of the serving cell and the target switching threshold, that is, the server is more difficult to switch the serving cell of the UE to other cells, so that the UE can be ensured to have longer residence time in the original serving cell, and the residence ratio of the serving cell is improved.
In the embodiment of the present invention, the first threshold and the second threshold may be understood as critical values in the preset value range.
In one implementation of the embodiment of the present invention, when the difference score is equal to the second threshold value or the first threshold value (i.e. the critical value), it is indicated that the difference between the network quality of the first cell and the network quality of the second cell is smaller. At this time, the server may determine that the initial handover threshold value described above remains unchanged.
For example, the initial handover threshold may be-114 dbm and the target handover threshold may be-115 dbm.
The embodiment of the invention can divide the functional modules of the server and the like according to the method example, for example, each functional module can be divided corresponding to each function, and two or more functions can be integrated in one processing module. The integrated modules may be implemented in hardware or in software functional modules. It should be noted that, in the embodiment of the present invention, the division of the modules is schematic, which is merely a logic function division, and other division manners may be implemented in actual implementation.
In the case of dividing the respective functional modules with the respective functions, fig. 6 shows a schematic diagram of one possible configuration of the cell switching apparatus 10 involved in the above-described embodiment, and as shown in fig. 6, the cell switching apparatus 10 may include: a determination module 101 and a processing module 102.
A determining module 101, configured to determine a difference score, where the difference score is used to characterize a difference between a network quality of a first cell and a network quality of a second cell, and a network system of the first cell is different from a network system of the second cell.
And the processing module 102 is configured to adjust the initial handover threshold to obtain the target handover threshold in response to the difference score being outside the preset numerical range.
The processing module 102 is further configured to switch the serving cell of the UE to the second cell in response to the serving cell of the UE being the first cell and a preset time period being a duration period in which the signal strength of the first cell is less than or equal to the target switching threshold.
Optionally, the cell switching apparatus 10 further includes: and an acquisition module 103.
An obtaining module 103, configured to obtain MDT data of the first cell, where the MDT data includes at least one location information.
The processing module 102 is further configured to perform rasterization processing on a target area, where the target area includes the first cell and the second cell.
The determining module 101 is further configured to determine at least one grid from a plurality of grids, where the plurality of grids are grids included in the target area, and the location information of the at least one grid is the same as the at least one location information.
The determining module 101 is further configured to determine first network data of each grid and second network data of each grid in the at least one grid, where the first network data of one grid includes a first RRC reestablishment number corresponding to location information of the grid and a first MAC layer rate corresponding to location information of the grid, the first RRC reestablishment number is an RRC reestablishment number in the first cell, the first MAC layer rate is an MAC layer rate in the first cell, the second network data of one grid includes a second RRC reestablishment number corresponding to location information of the grid and a second MAC layer rate corresponding to location information of the grid, the second RRC reestablishment number is an RRC reestablishment number in the second cell, and the second MAC layer rate is an MAC layer rate in the second cell.
The determining module 101 is further configured to determine a network quality score of the first cell according to the first network data of each grid, and determine a network quality score of the second cell according to the second network data of each grid, wherein the network quality score of one cell is used for characterizing the network quality of the cell.
The determining module 101 is specifically configured to determine the difference score according to the network quality score of the first cell and the network quality score of the second cell.
Optionally, the MDT data further includes a timestamp corresponding to each location information in the at least one location information.
The obtaining module 103 is further configured to obtain a first correspondence, where the first correspondence includes a plurality of network data of the first cell and a timestamp corresponding to each of the plurality of network data.
The determining module 101 is specifically further configured to determine preset network data as first network data of the preset grid, where the preset network data is network data with a smallest difference between a corresponding timestamp and a preset timestamp in the plurality of network data, the preset timestamp is a timestamp corresponding to preset location information, the preset location information is one of the at least one location information, the preset grid is one of the at least one grid, and the location information of the preset grid is the same as the preset location information.
Optionally, the determining module 101 is specifically further configured to determine that the difference score satisfies the following formula:
wherein F represents the difference score, F 1 A network quality score, f, representing the first cell 2 Representing a network quality score for the second cell.
Optionally, the processing module 102 is specifically configured to increase the initial handover threshold according to a preset step size to obtain a target handover threshold in response to the difference score being greater than a first threshold, and the network quality of the second cell is better than the network quality of the first cell, where the first threshold is a maximum value within the preset numerical range.
The processing module 102 is specifically further configured to reduce the initial handover threshold according to the preset step size in response to the difference score being smaller than a second threshold, and the network quality of the first cell is better than the network quality of the second cell, so as to obtain a target handover threshold, where the second threshold is a minimum value within the preset numerical range.
In case of an integrated unit, fig. 7 shows a schematic diagram of one possible structure of the cell switching arrangement referred to in the above embodiment. As shown in fig. 7, the cell switching apparatus 20 may include: a processing module 201 and a communication module 202. The processing module 201 may be configured to control and manage the operation of the cell switching apparatus 20. The communication module 202 may be used to support communication of the cell switching apparatus 50 with other entities. Optionally, as shown in fig. 7, the cell switching device 20 may further include a storage module 203 for storing program codes and data of the cell switching device 50.
Wherein the processing module 201 may be a processor or a controller. The communication module 202 may be a transceiver, a transceiver circuit, a communication interface, or the like. The storage module 203 may be a memory.
When the processing module 201 is a processor, the communication module 202 is a transceiver, and the storage module 203 is a memory, the processor, the transceiver, and the memory may be connected through a bus. The bus may be a peripheral component interconnect standard (peripheral component interconnect, PCI) bus or an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like. The buses may be divided into address buses, data buses, control buses, etc.
It should be understood that, in various embodiments of the present invention, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on 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.
In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber terminal line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., a floppy Disk, a hard Disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (12)

1. A method for cell handover, comprising:
obtaining MDT data of a first cell, wherein the MDT data comprises at least one piece of position information;
performing rasterization processing on a target area, and determining at least one grid from a plurality of grids, wherein the grids are grids included in the target area, the position information of the at least one grid is the same as the at least one position information, and the target area comprises the first cell and the second cell;
determining first network data of each grid and second network data of each grid in the at least one grid, wherein the first network data of one grid comprises first Radio Resource Control (RRC) reestablishment times corresponding to position information of the grid and first Media Access Control (MAC) layer rate corresponding to the position information of the grid, the first RRC reestablishment times are RRC reestablishment times in the first cell, the first MAC layer rate is an MAC layer rate in the first cell, the second network data of one grid comprises second RRC reestablishment times corresponding to the position information of the grid and second MAC layer rate corresponding to the position information of the grid, the second RRC reestablishment times are RRC reestablishment times in the second cell, and the second MAC layer rate is an MAC layer rate in the second cell;
Determining a network quality score of the first cell from the first network data of each grid and determining a network quality score of the second cell from the second network data of each grid, wherein the network quality score of one cell is used for characterizing the network quality of the cell;
determining a difference score, wherein the difference score is used for representing the difference between the network quality of the first cell and the network quality of the second cell, and the network system of the first cell is different from the network system of the second cell;
adjusting an initial switching threshold value to obtain a target switching threshold value in response to the difference score being outside a preset numerical range;
and responding to the service cell of the User Equipment (UE) as the first cell, wherein the preset time length is greater than or equal to a time length threshold value, switching the service cell of the UE into the second cell, and the preset time length is the time length that the signal strength of the first cell is less than or equal to the target switching threshold value.
2. The cell handover method according to claim 1, wherein the determining a difference score comprises:
and determining the difference score according to the network quality score of the first cell and the network quality score of the second cell.
3. The cell handover method according to claim 2, wherein the MDT data further includes a time stamp corresponding to each location information of the at least one location information, the method further comprising:
acquiring a first corresponding relation, wherein the first corresponding relation comprises a plurality of network data of the first cell and time stamps corresponding to the plurality of network data;
determining first network data of a preset grid, including:
determining preset network data as first network data of the preset grids, wherein the preset network data is network data with the smallest difference value between corresponding time stamps and preset time stamps in the plurality of network data, the preset time stamp is a time stamp corresponding to preset position information, the preset position information is one of the at least one position information, the preset grid is one of the at least one grids, and the position information of the preset grid is the same as the preset position information.
4. A cell handover method according to claim 2 or 3, wherein said determining the difference score from the network quality score of the first cell and the network quality score of the second cell comprises:
Determining that the difference score satisfies the following formula:
wherein F represents the difference score, F 1 A network quality score, f, representing the first cell 2 Representing the second cellNetwork quality score.
5. A cell handover method according to any of claims 1-3, wherein said adjusting the initial handover threshold to obtain the target handover threshold comprises:
responding to the difference score being larger than a first threshold value, wherein the network quality of the second cell is better than that of the first cell, and increasing the initial switching threshold value according to a preset step length to obtain a target switching threshold value, wherein the first threshold value is the maximum value within the preset numerical range;
and in response to the difference score being smaller than a second threshold, and the network quality of the first cell being better than the network quality of the second cell, reducing the initial handover threshold according to the preset step length to obtain a target handover threshold, wherein the second threshold is the minimum value within the preset numerical range.
6. A cell switching apparatus, comprising: the device comprises an acquisition module, a determination module and a processing module;
the acquisition module is used for acquiring MDT data of a first cell, wherein the MDT data comprises at least one piece of position information;
The processing module is further used for rasterizing a target area, wherein the target area comprises the first cell and the second cell;
the determining module is further configured to determine at least one grid from a plurality of grids, where the plurality of grids are grids included in the target area, and position information of the at least one grid is the same as the at least one position information;
the determining module is further configured to determine first network data of each grid and second network data of each grid, where the first network data of one grid includes a first radio resource control RRC reestablishment number corresponding to location information of the grid and a first medium access control MAC layer rate corresponding to location information of the grid, the first RRC reestablishment number is an RRC reestablishment number in the first cell, the first MAC layer rate is an MAC layer rate in the first cell, and the second network data of one grid includes a second RRC reestablishment number corresponding to location information of the grid and a second MAC layer rate corresponding to location information of the grid, the second RRC reestablishment number is an RRC reestablishment number in the second cell, and the second MAC layer rate is an MAC layer rate in the second cell;
The determining module is further configured to determine a network quality score of the first cell according to the first network data of each grid, and determine a network quality score of the second cell according to the second network data of each grid, where the network quality score of one cell is used to characterize the network quality of the cell;
the determining module is configured to determine a difference score, where the difference score is used to characterize a difference between a network quality of the first cell and a network quality of the second cell, and a network system of the first cell is different from a network system of the second cell;
the processing module is used for adjusting an initial switching threshold value to obtain a target switching threshold value in response to the difference score being out of a preset numerical range;
the processing module is further configured to switch the serving cell of the UE to the second cell in response to the serving cell of the UE being the first cell and a preset time period being greater than or equal to a time period threshold, where the preset time period is a time period when the signal strength of the first cell is less than or equal to the target switching threshold.
7. The cell switching apparatus according to claim 6, wherein,
The determining module is specifically configured to determine the difference score according to the network quality score of the first cell and the network quality score of the second cell.
8. The cell switching apparatus according to claim 7, wherein the MDT data further includes a time stamp corresponding to each location information of the at least one location information;
the acquiring module is further configured to acquire a first correspondence, where the first correspondence includes a plurality of network data of the first cell and time stamps corresponding to the plurality of network data;
the determining module is specifically configured to determine preset network data as first network data of a preset grid, where the preset network data is network data with a smallest difference between a timestamp corresponding to the plurality of network data and a preset timestamp, the preset timestamp is a timestamp corresponding to preset location information, the preset location information is one of the at least one location information, the preset grid is one of the at least one grid, and the location information of the preset grid is the same as the preset location information.
9. Cell switching device according to claim 7 or 8, characterized in that,
The determining module is specifically further configured to determine that the difference score satisfies the following formula:
wherein F represents the difference score, F 1 A network quality score, f, representing the first cell 2 Representing a network quality score for the second cell.
10. Cell switching device according to any of the claims 6-8, characterized in that,
the processing module is specifically configured to increase the initial handover threshold according to a preset step size in response to the difference score being greater than a first threshold, and the network quality of the second cell is better than that of the first cell, so as to obtain a target handover threshold, where the first threshold is a maximum value within the preset numerical range;
the processing module is specifically further configured to respond to the difference score being smaller than a second threshold, and the network quality of the first cell is better than the network quality of the second cell, reduce the initial handover threshold according to the preset step length to obtain a target handover threshold, where the second threshold is a minimum value within the preset numerical range.
11. A server, the server comprising:
a processor;
a memory configured to store the processor-executable instructions;
Wherein the processor is configured to execute the instructions to implement the cell handover method of any of claims 1-5.
12. A computer readable storage medium having instructions stored thereon, which when executed by a server, cause the server to perform the cell handover method according to any of claims 1-5.
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