CN110572765A - cell switching method and system - Google Patents
cell switching method and system Download PDFInfo
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- CN110572765A CN110572765A CN201810474768.0A CN201810474768A CN110572765A CN 110572765 A CN110572765 A CN 110572765A CN 201810474768 A CN201810474768 A CN 201810474768A CN 110572765 A CN110572765 A CN 110572765A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
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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
- H04W36/0085—Hand-off measurements
- H04W36/0094—Definition of hand-off measurement parameters
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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
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/023—Services making use of location information using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/02—Services making use of location information
- H04W4/025—Services making use of location information using location based information parameters
- H04W4/026—Services making use of location information using location based information parameters using orientation information, e.g. compass
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Abstract
the embodiment of the invention provides a method and a system for cell switching, wherein the method comprises the following steps: receiving a measurement report reported by a terminal device, wherein the measurement report comprises real-time position information of the terminal device; determining the moving direction of the terminal equipment according to the first real-time position information and the second real-time position information; if the moving direction is the direction in which the mobile terminal is far away from the serving cell and close to the adjacent cell, calculating the distance between the terminal equipment and the adjacent cell according to the second real-time position information; when the distance is within a preset distance range, judging whether the terminal equipment meets a switching condition or not based on the distance; and when the terminal equipment meets the switching condition, switching the serving cell of the terminal equipment. The embodiment of the invention can reduce the error rate of the cell wrong switching, more correctly reflect the switching willingness of the terminal equipment and improve the accuracy and timeliness of the cell switching.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a cell switching method and a cell switching system.
background
Handover, one of the important functional blocks in radio resources, has an important impact on the performance of the network. The good switching algorithm can correctly reflect the actual movement of the UE (user Equipment), understand the switching will of the UE and more accurately complete the cell switching.
In the prior art, the handover process in the mobile communication network is mainly divided into three stages, including handover measurement, handover decision and handover execution.
In the Measurement phase, when the UE measures that a radio Measurement signal of a serving cell reaches a configuration threshold, reporting a triggered MR (Measurement Report) to an eNodeB (Evolved Node B); in the decision-making stage, the eNodeB evaluates according to the measurement result reported by the UE and the threshold configured on the network side, and determines whether to trigger the switching; and in the execution stage, the eNodeB issues a switching command to control the UE to be switched to the target cell according to the decision result, and the UE completes the switching.
in the cell switching process, the strength change of the wireless measurement signal of the serving cell is used as the basis for cell switching, however, the propagation of the wireless signal is greatly influenced by the surrounding environment, various scattering, diffraction and refraction exist in the transmission, and under a complex electromagnetic environment, various interferences also exist among the wireless signals, so that the propagation of the wireless signal is unstable, the value of the wireless measurement signal is inaccurate, and the strength change of the wireless signal cannot correctly reflect the cell switching requirement of the UE; especially, at the edge of a cell needing handover, the problems of the wireless signals are particularly obvious, the defects are obvious, and the problems of wrong handover and ping-pong handover are easy to occur.
disclosure of Invention
the technical problem to be solved by the embodiments of the present invention is to provide a cell handover method, so as to solve the problems that the value of a wireless measurement signal is inaccurate and cannot correctly reflect the cell handover requirement of a UE, which are caused by the strength change of the wireless measurement signal of a serving cell as the basis for cell handover in the existing cell handover.
correspondingly, the embodiment of the invention also provides a system for cell switching, which is used for ensuring the realization and the application of the method.
In order to solve the above problem, the present invention discloses a method for cell handover, wherein the method comprises:
Receiving a measurement report reported by a terminal device, wherein the measurement report comprises real-time position information of the terminal device, the measurement report comprises a first measurement report and a second measurement report which are reported in sequence, and the real-time position information comprises first real-time position information corresponding to the first measurement report and second real-time position information corresponding to the second measurement report;
determining the moving direction of the terminal equipment according to the first real-time position information and the second real-time position information;
If the moving direction is the direction in which the mobile terminal is far away from the serving cell and close to the adjacent cell, calculating the distance between the terminal equipment and the adjacent cell according to the second real-time position information;
when the distance is within a preset distance range, judging whether the terminal equipment meets switching conditions or not based on the distance
and when the terminal equipment meets the switching condition, switching the serving cell of the terminal equipment.
preferably, the measurement report further comprises a radio signal index, wherein the radio signal index comprises signal strength and/or signal quality;
when the distance is within a preset distance range, judging whether the terminal equipment meets a switching condition based on the distance, wherein the judging step comprises the following steps:
When the distance is within a preset distance range, judging whether the wireless signal index contained in the second measurement report meets a preset signal condition;
And if the wireless signal index contained in the second measurement report meets a preset signal condition, judging that the terminal equipment meets a switching condition.
preferably, when the distance is within a preset distance range, the determining whether the radio signal index included in the second measurement report meets a preset signal condition includes:
when the distance is within a preset distance range, calculating whether the difference value between the signal intensity of the adjacent cell and the signal intensity of the serving cell is greater than a signal difference value threshold value;
and if the difference is greater than a signal difference threshold, the signal strength of the serving cell is less than a preset strength threshold, and the signal quality of the neighbor cell is greater than a preset quality threshold, determining that the wireless signal index meets a preset signal condition.
Preferably, the measurement report further comprises a radio signal index, wherein the radio signal index comprises signal strength and/or signal quality;
When the distance is within a preset distance range, judging whether the terminal equipment meets a switching condition based on the distance, wherein the judging step comprises the following steps:
When the distance is within a preset distance range, setting a first weight for the distance, setting a second weight for the signal strength of the adjacent cell, and setting a third weight for the signal quality of the adjacent cell;
according to the first weight, the second weight and the third weight, carrying out weighted summation on the distance, the signal strength of the adjacent cell and the signal quality of the adjacent cell to obtain a weighted value;
and if the weighted value is greater than a preset weighted value threshold, judging that the terminal equipment meets the switching condition.
The embodiment of the invention also provides a system for switching the cells, which comprises the following steps:
A measurement report receiving module, configured to receive a measurement report reported by a terminal device, where the measurement report includes real-time location information of the terminal device, and the measurement report includes a first measurement report and a second measurement report that are reported in sequence, and then the real-time location information includes first real-time location information corresponding to the first measurement report and second real-time location information corresponding to the second measurement report;
a moving direction determining module, configured to determine a moving direction of the terminal device according to the first real-time location information and the second real-time location information;
a distance calculation module, configured to calculate, according to the second real-time location information, a distance between the terminal device and an adjacent cell if the moving direction is a direction in which the mobile terminal is far away from a serving cell and is close to the adjacent cell;
The distance decision module is used for judging whether the terminal equipment meets a switching condition or not based on the distance when the distance is within a preset distance range;
and the switching module is used for switching the service cell of the terminal equipment when the terminal equipment meets the switching condition.
preferably, the measurement report further comprises a radio signal index, wherein the radio signal index comprises signal strength and/or signal quality;
the distance decision module comprises:
the signal condition judgment submodule is used for judging whether the wireless signal index contained in the second measurement report meets the preset signal condition or not when the distance is within the preset distance range; and if the wireless signal index contained in the second measurement report meets a preset signal condition, judging that the terminal equipment meets a switching condition.
preferably, the signal condition judgment sub-module is further configured to:
when the distance is within a preset distance range, calculating whether the difference value between the signal intensity of the adjacent cell and the signal intensity of the serving cell is greater than a signal difference value threshold value;
and if the difference is greater than a signal difference threshold, the signal strength of the serving cell is less than a preset strength threshold, and the signal quality of the neighbor cell is greater than a preset quality threshold, determining that the wireless signal index meets a preset signal condition.
Preferably, the measurement report further comprises a radio signal index, wherein the radio signal index comprises signal strength and/or signal quality;
The distance decision module comprises:
the weight configuration submodule is used for setting a first weight for the distance, setting a second weight for the signal intensity of the adjacent cell and setting a third weight for the signal quality of the adjacent cell when the distance is within a preset distance range;
a weighting submodule, configured to perform weighted summation on the distance, the signal strength of the neighboring cell, and the signal quality of the neighboring cell according to the first weight, the second weight, and the third weight, so as to obtain a weighted value;
And the switching condition judgment submodule is used for judging that the terminal equipment meets the switching condition if the weighted value is greater than a preset weighted value threshold.
compared with the prior art, the embodiment of the invention has the following advantages:
In the embodiment of the present invention, the measurement report reported by the terminal device may include the real-time location information of the terminal device, and the influence factor of the real-time location information of the terminal device is increased in the cell handover decision, if the moving direction of the terminal equipment is judged to be the direction far away from the service cell and close to the adjacent cell according to the change of the real-time position information corresponding to the two measurement reports reported by the terminal equipment in sequence, calculating the distance between the terminal equipment and the adjacent cell, judging whether the terminal equipment meets the switching condition according to the distance, if the terminal equipment meets the switching condition, the serving cell of the terminal equipment is switched, the risks of large environmental influence and unstable signals caused by only taking the wireless measurement signals as the switching conditions are reduced, and the error rate of cell wrong switching is reduced, the switching willingness of the terminal equipment is reflected more correctly, and the accuracy and timeliness of cell switching are improved.
Drawings
fig. 1 is a flowchart illustrating steps of a method for cell handover according to an embodiment of the present invention;
Fig. 2 is a schematic diagram of terminal device movement in an embodiment of a method for cell handover according to the present invention;
Fig. 3 is a block diagram of a system for cell handover according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1, a flowchart illustrating steps of an embodiment of a method for cell handover according to an embodiment of the present invention is shown, where the embodiment of the present invention may be applied to cell handover in a same base station, and may also be applied to cell handover in different base stations, including cell handover in different networks, such as cell handover in an LTE (Long Term Evolution) network and a WCDMA (Wideband Code Division Multiple Access) network, which is not limited in the embodiment of the present invention.
the embodiment of the invention specifically comprises the following steps:
step 101, receiving a measurement report reported by a terminal device, wherein the measurement report comprises real-time position information of the terminal device;
In a specific implementation, the manner of reporting the measurement report by the UE may include periodic reporting and event-triggered reporting, where the periodic reporting is configured by the base station, and the UE directly reports the measurement report. The event-triggered reporting is further divided into events of the same-frequency/different-frequency system and events of different systems, and the method for reporting the measurement report by the UE is not limited in the embodiment of the present invention.
As an example, the measurement report may include: reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), eNodeB received interference Power, eNodeB antenna arrival angle, UE transmission Power margin, uplink packet loss rate, downlink packet loss rate, uplink Signal to noise ratio, PRB (Physical Resource Block) granularity, eNodeB received interference Power, and the like. In the embodiment of the present invention, along with the development of the communication network, the measurement report may include, in addition to the above contents, real-time location information (required by an operator) of the terminal device, such as longitude and latitude data of the UE, and in practice, the real-time location information may reach a decimeter level and may be more and more accurate.
in the embodiment of the present invention, the base station may receive the measurement report at least twice, for example, the base station may receive a first measurement report and a second measurement report which are reported sequentially, where the first measurement report may include the first real-time location information, and the second measurement report may include the second real-time location information.
In implementation, the interval between the first measurement report and the second measurement report may be T1, for example, as shown in fig. 2, when the UE is located at a P1 position, the UE meets a serving cell wireless measurement threshold or enters a location area, and triggers a first measurement report, where the first measurement report reported to the base station may carry a longitude and latitude position P1 of the UE at this moment; and after waiting for a certain time T1, when the UE is at the position P2, the UE reports a second measurement report, and the first measurement report can carry the longitude and latitude position P2 of the second reporting time of the UE.
after receiving the measurement report reported by the UE, the base station may determine whether the UE satisfies the handover condition according to the real-time location information included in the measurement report.
Step 102, determining the moving direction of the terminal equipment according to the first real-time position information and the second real-time position information;
specifically, the moving direction of the UE may be determined according to the longitude and latitude positions of the two adjacent measurement reports and the position changes of the base station of the serving cell and the base station of the neighboring cell.
For example, in fig. 2, the moving direction of the UE may be a direction from P1 to P2. Assume that the base station position of the serving cell is C1 and the base station position of the neighboring cell (serving cell) is C2. When the UE moves from P1 to P2, as shown in FIG. 2, the UE is at a base station far from the serving cell, i.e., (P2-C1) > (P1-C1), and at a base station near the target cell, i.e., (P1-C2) > (P2-C2).
Step 103, if the moving direction is the direction in which the mobile terminal is far away from the serving cell and close to the neighboring cell, calculating the distance between the terminal equipment and the neighboring cell according to the second real-time position information;
When it is determined that the moving direction of the UE is a direction away from the serving cell and close to the neighboring cell, the distance between the real-time location of the UE and the base station of the neighboring cell may be calculated according to the measurement report reported last time, such as the second real-time location information in the second measurement report.
104, when the distance is within a preset distance range, judging whether the terminal equipment meets a switching condition or not based on the distance;
in an embodiment, if the distance between the real-time location information of the UE and the base station of the neighboring cell is within a preset distance range, it indicates that the UE is close enough to the base station of the neighboring cell, and it may be determined that the UE satisfies the handover condition.
Correspondingly, if the distance is not within the preset range, the UE is judged not to meet the switching condition, and the wireless measurement threshold triggering of the next cell switching of the UE is continuously waited.
It should be noted that the embodiment of the present invention is not limited to the above-mentioned manner of determining whether the UE satisfies the handover condition according to the real-time location information, and those skilled in the art may determine whether the UE satisfies the handover condition by adopting other manners according to the real-time location information, for example, in fig. 2, if the distance difference between P1, P2, C2, and C1 satisfies a certain range, it is determined that the UE satisfies the handover condition.
in the embodiment of the invention, the switching condition of cell switching is judged according to the real-time position information of the UE, the actual movement of the UE is used as the judging condition of cell switching, the problems of large environmental influence and unstable signals caused by using wireless measurement signals as the switching conditions in the prior art are solved, the error rate of error switching during cell switching is reduced, and the switching efficiency is accelerated.
In a specific implementation, the distance from the real-time location information of the UE to the base station of the neighboring cell and the radio signal index (signal strength and/or signal quality) may also be combined to decide whether the UE satisfies the handover condition. In another embodiment, step 104 may further include the sub-steps of:
substep S11, when the distance is within a preset distance range, determining whether the wireless signal index included in the second measurement report meets a preset signal condition;
and a substep S12, determining that the terminal device satisfies a handover condition if the wireless signal index included in the second measurement report meets a preset signal condition.
Specifically, in an embodiment, when the signal strength of the neighboring cell is greater than a preset strength threshold, and/or the signal quality of the neighboring cell is greater than a preset quality threshold, it may be determined that the radio signal index meets the preset signal condition.
in another embodiment, the sub-step S11 may further include the following sub-steps:
Substep S111, when the distance is within a preset distance range, calculating whether a difference between the signal strength of the neighboring cell and the signal strength of the serving cell is greater than a signal difference threshold;
and a substep S112, determining that the radio signal index meets a predetermined signal condition if the difference is greater than the signal difference threshold, the signal strength of the serving cell is less than a predetermined strength threshold, and the signal quality of the neighboring cell is greater than a predetermined quality threshold.
in particular, if RSRPn-RSRPs>h, and, RSRPs<T，RSRQn>t', the wireless signal index can be judged to meet the preset signal condition, wherein RSRPnRSRP value, RSRP, representing a neighbor cellsRSRP value, RSRQ, representing a serving cellnthe value of the RSRQ of the neighboring cell is represented, H is a preset signal difference threshold, T represents a preset strength threshold, and T' represents a preset quality threshold.
in the embodiment of the invention, when judging whether the UE meets the preset condition, the real-time position information of the UE, the signal intensity and the signal quality of the serving cell and the signal intensity and the signal quality of the adjacent cell are considered, so that the accuracy of cell switching is better improved.
in yet another preferred embodiment of the present invention, step 104 may further comprise the sub-steps of:
a substep S13, setting a first weight for the distance, a second weight for the signal strength of the neighboring cell, and a third weight for the signal quality of the neighboring cell when the distance is within a preset distance range;
Substep S14, performing weighted summation on the distance, the signal strength of the neighboring cell and the signal quality of the neighboring cell according to the first weight, the second weight and the third weight to obtain a weighted value;
and a substep S15, if the weighted value is greater than a preset weighted value threshold, determining that the terminal device meets the switching condition.
in particular implementations, cell handover decisions may be made in conjunction with various parameters in the measurement reports. Specifically, a first weight, a second weight, and a third weight are respectively set for a distance between the UE and the neighboring cell base station, a signal strength of the neighboring cell, and a signal quality of the neighboring cell, which are calculated according to the real-time location parameter in the measurement report. And according to the first weight, the second weight and the third weight, carrying out weighted summation on the distance, the signal strength of the adjacent cell and the signal quality of the adjacent cell to obtain a weighted value, namely the weighted value is distance, the first weight, the signal strength of the adjacent cell, the second weight and the signal quality of the adjacent cell.
When the weighted value is larger than the preset weighted value threshold, the UE is close enough to the base station of the adjacent cell, the cell switching can be carried out, and at the moment, the UE is judged to meet the switching condition.
And 105, switching the service cell of the terminal equipment when the terminal equipment meets the switching condition.
when the UE meets the switching condition, a relevant switching command is issued, the cell switching is started to be executed, and the UE is switched from the current service cell to the adjacent cell.
In the embodiment of the present invention, the measurement report reported by the terminal device may include the real-time location information of the terminal device, and the influence factor of the real-time location information of the terminal device is increased in the cell handover decision, if the moving direction of the terminal equipment is judged to be the direction far away from the service cell and close to the adjacent cell according to the change of the real-time position information corresponding to the two measurement reports reported by the terminal equipment in sequence, calculating the distance between the terminal equipment and the adjacent cell, judging whether the terminal equipment meets the switching condition according to the distance, if the terminal equipment meets the switching condition, the serving cell of the terminal equipment is switched, the risks of large environmental influence and unstable signals caused by only taking the wireless measurement signals as the switching conditions are reduced, and the error rate of cell wrong switching is reduced, the switching willingness of the terminal equipment is reflected more correctly, and the accuracy and timeliness of cell switching are improved.
It should be noted that, for simplicity of description, the method embodiments are described as a series of acts or combination of acts, but those skilled in the art will recognize that the present invention is not limited by the illustrated order of acts, as some steps may occur in other orders or concurrently in accordance with the embodiments of the present invention. Further, those skilled in the art will appreciate that the embodiments described in the specification are presently preferred and that no particular act is required to implement the invention.
referring to fig. 3, a block diagram of a structure of a system embodiment of cell handover according to an embodiment of the present invention is shown, which may specifically include the following modules:
a measurement report receiving module 301, configured to receive a measurement report reported by a terminal device, where the measurement report includes real-time location information of the terminal device, and the measurement report includes a first measurement report and a second measurement report that are reported in sequence, and then the real-time location information includes first real-time location information corresponding to the first measurement report and second real-time location information corresponding to the second measurement report;
A moving direction determining module 302, configured to determine a moving direction of the terminal device according to the first real-time location information and the second real-time location information;
A distance calculating module 303, configured to calculate, according to the second real-time location information, a distance between the terminal device and an adjacent cell if the moving direction is a direction in which the mobile terminal is far away from a serving cell and is close to the adjacent cell;
A distance decision module 304, configured to determine whether the terminal device meets a handover condition based on the distance when the distance is within a preset distance range;
A switching module 305, configured to switch a serving cell of the terminal device when the terminal device meets the switching condition.
In a preferred embodiment of the present invention, the measurement report further comprises a wireless signal index, wherein the wireless signal index comprises signal strength and/or signal quality;
The distance decision module may further comprise sub-modules:
The signal condition judgment submodule is used for judging whether the wireless signal index contained in the second measurement report meets the preset signal condition or not when the distance is within the preset distance range; and if the wireless signal index contained in the second measurement report meets a preset signal condition, judging that the terminal equipment meets a switching condition.
In a preferred embodiment of the present invention, the signal condition determining sub-module is further configured to:
when the distance is within a preset distance range, calculating whether the difference value between the signal intensity of the adjacent cell and the signal intensity of the serving cell is greater than a signal difference value threshold value;
And if the difference is greater than a signal difference threshold, the signal strength of the serving cell is less than a preset strength threshold, and the signal quality of the neighbor cell is greater than a preset quality threshold, determining that the wireless signal index meets a preset signal condition.
In a preferred embodiment of the present invention, the measurement report further comprises a wireless signal index, wherein the wireless signal index comprises signal strength and/or signal quality;
the distance decision module may further comprise sub-modules:
The weight configuration submodule is used for setting a first weight for the distance, setting a second weight for the signal intensity of the adjacent cell and setting a third weight for the signal quality of the adjacent cell when the distance is within a preset distance range;
a weighting submodule, configured to perform weighted summation on the distance, the signal strength of the neighboring cell, and the signal quality of the neighboring cell according to the first weight, the second weight, and the third weight, so as to obtain a weighted value;
and the switching condition judgment submodule is used for judging that the terminal equipment meets the switching condition if the weighted value is greater than a preset weighted value threshold.
for the system embodiment, since it is basically similar to the method embodiment described above, the description is simple, and for the relevant points, reference may be made to the partial description of the system embodiment.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
as will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, embodiments of the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, embodiments of the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
embodiments of the present invention are described with reference to flowchart illustrations and/or block diagrams of methods, terminal devices (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing terminal to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing terminal, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing terminal to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing terminal to cause a series of operational steps to be performed on the computer or other programmable terminal to produce a computer implemented process such that the instructions which execute on the computer or other programmable terminal provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
finally, it should also be noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or terminal that comprises the element.
the method for cell handover and the system for cell handover provided by the present invention are introduced in detail above, and a specific example is applied in the text to explain the principle and the implementation of the present invention, and the description of the above embodiment is only used to help understanding the method of the present invention and the core idea thereof; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (8)
1. A method of cell handover, the method comprising:
Receiving a measurement report reported by a terminal device, wherein the measurement report comprises real-time position information of the terminal device, the measurement report comprises a first measurement report and a second measurement report which are reported in sequence, and the real-time position information comprises first real-time position information corresponding to the first measurement report and second real-time position information corresponding to the second measurement report;
Determining the moving direction of the terminal equipment according to the first real-time position information and the second real-time position information;
If the moving direction is the direction in which the mobile terminal is far away from the serving cell and close to the adjacent cell, calculating the distance between the terminal equipment and the adjacent cell according to the second real-time position information;
When the distance is within a preset distance range, judging whether the terminal equipment meets a switching condition or not based on the distance;
and when the terminal equipment meets the switching condition, switching the serving cell of the terminal equipment.
2. The method of claim 1, wherein the measurement report further comprises a radio signal index, wherein the radio signal index comprises a signal strength and/or a signal quality;
When the distance is within a preset distance range, judging whether the terminal equipment meets a switching condition based on the distance, wherein the judging step comprises the following steps:
When the distance is within a preset distance range, judging whether the wireless signal index contained in the second measurement report meets a preset signal condition;
and if the wireless signal index contained in the second measurement report meets a preset signal condition, judging that the terminal equipment meets a switching condition.
3. The method of claim 2, wherein the determining whether the index of the radio signal included in the second measurement report meets a predetermined signal condition when the distance is within a predetermined distance range comprises:
when the distance is within a preset distance range, calculating whether the difference value between the signal intensity of the adjacent cell and the signal intensity of the serving cell is greater than a signal difference value threshold value;
And if the difference is greater than a signal difference threshold, the signal strength of the serving cell is less than a preset strength threshold, and the signal quality of the neighbor cell is greater than a preset quality threshold, determining that the wireless signal index meets a preset signal condition.
4. The method of claim 1, wherein the measurement report further comprises a radio signal index, wherein the radio signal index comprises a signal strength and/or a signal quality;
when the distance is within a preset distance range, judging whether the terminal equipment meets a switching condition based on the distance, wherein the judging step comprises the following steps:
When the distance is within a preset distance range, setting a first weight for the distance, setting a second weight for the signal strength of the adjacent cell, and setting a third weight for the signal quality of the adjacent cell;
According to the first weight, the second weight and the third weight, carrying out weighted summation on the distance, the signal strength of the adjacent cell and the signal quality of the adjacent cell to obtain a weighted value;
and if the weighted value is greater than a preset weighted value threshold, judging that the terminal equipment meets the switching condition.
5. a system for cell handover, the system comprising:
A measurement report receiving module, configured to receive a measurement report reported by a terminal device, where the measurement report includes real-time location information of the terminal device, and the measurement report includes a first measurement report and a second measurement report that are reported in sequence, and then the real-time location information includes first real-time location information corresponding to the first measurement report and second real-time location information corresponding to the second measurement report;
A moving direction determining module, configured to determine a moving direction of the terminal device according to the first real-time location information and the second real-time location information;
a distance calculation module, configured to calculate, according to the second real-time location information, a distance between the terminal device and an adjacent cell if the moving direction is a direction in which the mobile terminal is far away from a serving cell and is close to the adjacent cell;
The distance decision module is used for judging whether the terminal equipment meets a switching condition or not based on the distance when the distance is within a preset distance range;
and the switching module is used for switching the service cell of the terminal equipment when the terminal equipment meets the switching condition.
6. The system of claim 5, wherein the measurement report further comprises a radio signal index, wherein the radio signal index comprises a signal strength and/or a signal quality;
the distance decision module comprises:
The signal condition judgment submodule is used for judging whether the wireless signal index contained in the second measurement report meets the preset signal condition or not when the distance is within the preset distance range; and if the wireless signal index contained in the second measurement report meets a preset signal condition, judging that the terminal equipment meets a switching condition.
7. the system of claim 6, wherein the signal condition determination sub-module is further configured to:
when the distance is within a preset distance range, calculating whether the difference value between the signal intensity of the adjacent cell and the signal intensity of the serving cell is greater than a signal difference value threshold value;
and if the difference is greater than a signal difference threshold, the signal strength of the serving cell is less than a preset strength threshold, and the signal quality of the neighbor cell is greater than a preset quality threshold, determining that the wireless signal index meets a preset signal condition.
8. The system of claim 7, wherein the measurement report further comprises a radio signal index, wherein the radio signal index comprises a signal strength and/or a signal quality;
The distance decision module comprises:
the weight configuration submodule is used for setting a first weight for the distance, setting a second weight for the signal intensity of the adjacent cell and setting a third weight for the signal quality of the adjacent cell when the distance is within a preset distance range;
a weighting submodule, configured to perform weighted summation on the distance, the signal strength of the neighboring cell, and the signal quality of the neighboring cell according to the first weight, the second weight, and the third weight, so as to obtain a weighted value;
and the switching condition judgment submodule is used for judging that the terminal equipment meets the switching condition if the weighted value is greater than a preset weighted value threshold.
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