CN106412984A - Method and system for predicting best adjacent region of mobile terminal - Google Patents
Method and system for predicting best adjacent region of mobile terminal Download PDFInfo
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- CN106412984A CN106412984A CN201611065125.8A CN201611065125A CN106412984A CN 106412984 A CN106412984 A CN 106412984A CN 201611065125 A CN201611065125 A CN 201611065125A CN 106412984 A CN106412984 A CN 106412984A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
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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
- H04W36/0011—Control or signalling for completing the hand-off for data sessions of end-to-end connection
- H04W36/0016—Hand-off preparation specially adapted for end-to-end data sessions
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/08—Reselecting an access point
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/02—Arrangements for optimising operational condition
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Abstract
The invention discloses a method and a system for predicting a best adjacent region of a mobile terminal. The method comprises the following steps: acquiring the current moving speed of a mobile terminal and judging whether the current moving speed is greater than a preset first speed threshold; if the current moving speed is greater than the preset first speed threshold, acquiring base stations of which the distances from the mobile terminal are smaller than a preset spacing threshold, and acquiring the included angle between the connecting line of the mobile terminal and each base station and the line of moving direction of the mobile terminal and the signal strength of each base station; acquiring the base station meeting the condition that the signal strength is greater than a first signal strength threshold and the condition that the included angle between the connecting line of the mobile terminal and the base station and the line of moving direction of the mobile terminal is minimum among multiple included angles, and reporting a connection request of the mobile terminal to the base station. By using the method and the system, next best adjacent region can be predicted during high-speed movement and reported to a corresponding base station, the base station can provide service for a longer time after switching, and thus, ping-pong switching and disorderly invalid switching are reduced.
Description
Technical field
The present invention relates to wireless communication technology field, more particularly, to a kind of mobile terminal optimal adjacent area prediction realization side
Method and system.
Background technology
The popularization of high-speed railway, greatly facilitates the trip of people.But the speed being as bullet train improves constantly, people
Find in bullet train that mobile phone communication quality also declines continuous, particularly when speed is more than 200 kilometers/hour, often go out
Now fall net, call drop, cannot converse, converse discontinuously, conversation noise, networking speed slow the problems such as.One of main cause is hand
Serving cell frequent switching, pingpang handoff and invalid switching that machine high-speed mobile causes.These problems can be by optimizing network
Cover and to improve, such as build high ferro private network, simultaneously need to being optimized to mobile terminal, the particularly network coverage is not also complete
During optimization, mobile terminal is optimized and seems even more important.
Existing mobile terminal is general only to be measured and reports base station to the signal of Serving cell and adjacent area, by base station
Decide whether to switch over and how to switch.Existing mobile terminal typically can not be predicted next according to the motion state of itself
Best server cell.
Therefore, prior art has yet to be improved and developed.
Content of the invention
In view of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of prediction of mobile terminal optimal adjacent area is real
Existing method and system most preferably can not take according to the motion state prediction next one of itself it is intended to solve mobile terminal in prior art
The defect of business cell.
Technical scheme is as follows：
A kind of mobile terminal optimal adjacent area prediction implementation method, wherein, the method comprising the steps of：
A, the current translational speed of acquisition mobile terminal, and judge current translational speed whether more than the First Speed pre-setting
Threshold value；
If the current translational speed of B is more than described First Speed threshold value, obtain and mobile terminal distance be less than default between
Away from the base station of threshold value, and obtain the line of mobile terminal and each base station respectively and motion of mobile terminals place direction line folder
Angle, and the signal strength signal intensity of each base station；
C, the signal strength signal intensity of acquisition base station are more than described first signal strength threshold and the line of mobile terminal and base station and movement
The angle of terminal motion place direction line is the base station of the minimum of a value in multiple angles, and the connection request of mobile terminal is reported
To this base station.
Described mobile terminal optimal adjacent area prediction implementation method, wherein, described step B specifically includes：
If the current translational speed of B1 is more than described First Speed threshold value, judge whether the gps signal of mobile terminal can use；
B2, when the gps signal of mobile terminal can use, then obtain the base being less than default spacing threshold with the distance of mobile terminal
Stand, and according to θ=arccos（fd*c）/（f*v）Obtain the line of mobile terminal and each base station respectively and motion of mobile terminals institute
In the angle of direction line, and the signal strength signal intensity of each base station；Wherein, θ is line and the mobile terminal of mobile terminal and base station
The angle of motion place direction line, fd is the Doppler frequency shift between mobile terminal and base station, and c is propagation velocity of electromagnetic wave, and f is
The current downlink operating frequency of base station, v is the current translational speed of mobile terminal.
Described mobile terminal optimal adjacent area prediction implementation method, wherein, also includes after described step B2：
B3, when the gps signal of mobile terminal is unavailable, then obtain each base station with respect to mobile terminal base station signal change
Slope, and obtain the base station that base station signal change slope is more than or equal to 0.
Described mobile terminal optimal adjacent area prediction implementation method, wherein, described step C specifically includes：
C1, when mobile terminal gps signal can use when, then determine whether base station signal strength signal intensity be more than described first signal strong
Degree threshold value and mobile terminal and the minimum that the line of base station and the angle of motion of mobile terminals place direction line are in multiple angles
The base station of value；
If the signal strength signal intensity that C2 has base station is more than described first signal strength threshold and the line of mobile terminal and base station and shifting
The angle of dynamic terminal motion place direction line is the base station of the minimum of a value in multiple angles, then by the connection request of mobile terminal
Report to this base station；
If the signal strength signal intensity that C3 has base station is less than described first signal strength threshold and is more than default secondary signal intensity threshold
Value, the current translational speed of mobile terminal are more than the line of second speed threshold value, mobile terminal and base station pre-setting and shifting
The angle of dynamic terminal motion place direction line is the base station of the minimum of a value in multiple angles, then by the connection request of mobile terminal
Report to this base station；Wherein, described secondary signal intensity threshold is less than described first signal strength threshold, described second speed threshold value
More than First Speed threshold value.
Described mobile terminal optimal adjacent area prediction implementation method, wherein, also includes in described step C：
C4, when the gps signal of mobile terminal is unavailable, then obtain base station signal strength signal intensity be more than described first signal strength signal intensity threshold
The angle of the line of value, mobile terminal and base station and motion of mobile terminals place direction line is less than the signal strength signal intensity of 90 ° and base station
For the base station of maximum, and the connection request of mobile terminal is reported to this base station.
System is realized in a kind of mobile terminal optimal adjacent area prediction, and wherein, described system includes：
Speed obtains judge module, for obtaining the current translational speed of mobile terminal, and judges whether current translational speed is big
In the First Speed threshold value pre-setting；
Angle and signal strength signal intensity acquisition module, if be more than described First Speed threshold value for current translational speed, obtain with
The distance of mobile terminal is less than the base station of default spacing threshold, and obtains the line of mobile terminal and each base station and respectively and move
The angle of dynamic terminal motion place direction line, and the signal strength signal intensity of each base station；
Report interconnection module, the signal strength signal intensity for obtaining base station be more than described first signal strength threshold and mobile terminal with
The angle of the line of base station and motion of mobile terminals place direction line is the base station of the minimum of a value in multiple angles, and will move end
The connection request at end reports to this base station.
System is realized in described mobile terminal optimal adjacent area prediction, and wherein, described angle and signal strength signal intensity acquisition module are concrete
Including：
First judging unit, if be more than described First Speed threshold value for current translational speed, judges the GPS of mobile terminal
Whether signal can use；
Angle acquiring unit, for when the gps signal of mobile terminal can use, then obtain with the distance of mobile terminal be less than default
The base station of spacing threshold, and according to θ=arccos（fd*c）/（f*v）The line obtaining mobile terminal with each base station respectively and moves
The angle of dynamic terminal motion place direction line, and the signal strength signal intensity of each base station；Wherein, θ is the company of mobile terminal and base station
Line and the angle of motion of mobile terminals place direction line, fd is the Doppler frequency shift between mobile terminal and base station, and c is electromagnetic wave
Spread speed, f is the current downlink operating frequency of base station, and v is the current translational speed of mobile terminal.
System is realized in described mobile terminal optimal adjacent area prediction, and wherein, described angle and signal strength signal intensity acquisition module also wrap
Include：
Base station information acquiring unit, for when the gps signal of mobile terminal is unavailable, then obtaining each base station with respect to movement
The base station signal change slope of terminal, and obtain the base station that base station signal change slope is more than or equal to 0.
System is realized in the prediction of described mobile terminal optimal adjacent area, wherein, described reports interconnection module to specifically include：
Second judging unit, for when the gps signal of mobile terminal can use, then determining whether that the signal strength signal intensity of base station is more than
The angle of the line of described first signal strength threshold and mobile terminal and base station and motion of mobile terminals place direction line is many
The base station of the minimum of a value in individual angle；
First interconnection unit, if the signal strength signal intensity for there being base station be more than described first signal strength threshold and mobile terminal with
The angle of the line of base station and motion of mobile terminals place direction line is the base station of the minimum of a value in multiple angles, then will move end
The connection request at end reports to this base station；
Second interconnection unit, if the signal strength signal intensity for there being base station is less than described first signal strength threshold and more than default the
Binary signal intensity threshold, the current translational speed of mobile terminal are more than second speed threshold value, mobile terminal and the base pre-setting
The line stood and the base station that the angle of motion of mobile terminals place direction line is the minimum of a value in multiple angles, then by mobile terminal
Connection request report to this base station；Wherein, described secondary signal intensity threshold is less than described first signal strength threshold, described
Second speed threshold value is more than First Speed threshold value.
System is realized in the prediction of described mobile terminal optimal adjacent area, wherein, described reports interconnection module also to include：
3rd interconnection unit, the signal strength signal intensity for when the gps signal of mobile terminal is unavailable, then obtaining base station is more than described
The angle of the line of the first signal strength threshold, mobile terminal and base station and motion of mobile terminals place direction line be less than 90 ° and
The signal strength signal intensity of base station is the base station of maximum, and the connection request of mobile terminal is reported to this base station.
Mobile terminal provided by the present invention optimal adjacent area prediction realization method and system, method includes：Obtain mobile whole
The current translational speed at end, and judge current translational speed whether more than the First Speed threshold value pre-setting；If currently moving
When speed is more than described First Speed threshold value, then the distance of acquisition and mobile terminal is less than the base station of default spacing threshold, and
Obtain the line of mobile terminal and each base station respectively and motion of mobile terminals place direction line angle, and each base station
Signal strength signal intensity；Obtain base station signal strength signal intensity be more than described first signal strength threshold and mobile terminal and base station line and
The angle of motion of mobile terminals place direction line is the base station of the minimum of a value in multiple angles, and the connection request by mobile terminal
Report to this base station.Present invention achieves mobile terminal is during high-speed motion, the next optimal adjacent area of intelligent predicting, only
The measurement result of optimal adjacent area is reported respective base station it is ensured that base station is provided that longer service time after switching, to reduce
Cell pingpang handoff and the lateral unordered invalid switching of cell in front and back.
Brief description
Fig. 1 is the flow chart that implementation method preferred embodiment is predicted in the optimal adjacent area of mobile terminal of the present invention.
Fig. 2 is base station cell and its signal distributions schematic diagram of typical Along Railway.
Fig. 3 is the structured flowchart that system preferred embodiment is realized in the prediction of mobile terminal of the present invention optimal adjacent area.
Specific embodiment
The present invention provides a kind of mobile terminal optimal adjacent area prediction realization method and system, for making the purpose of the present invention, skill
Art scheme and effect are clearer, clear and definite, and the present invention is described in more detail below.It should be appreciated that tool described herein
Body embodiment only in order to explain the present invention, is not intended to limit the present invention.
As shown in figure 1, the flow chart predicting implementation method preferred embodiment for the optimal adjacent area of mobile terminal of the present invention,
The method comprising the steps of：
Step S100, obtain the current translational speed of mobile terminal, and judge current translational speed whether more than pre-setting
First Speed threshold value；
If the current translational speed of step S200 is more than described First Speed threshold value, acquisition is less than with the distance of mobile terminal
The base station of default spacing threshold, and obtain the line of mobile terminal and each base station respectively and motion of mobile terminals place direction
The angle of line, and the signal strength signal intensity of each base station；
Step S300, the signal strength signal intensity of acquisition base station are more than the company of described first signal strength threshold and mobile terminal and base station
The angle of line and motion of mobile terminals place direction line is the base station of the minimum of a value in multiple angles, and the connection by mobile terminal
Request reports to this base station.
When the mobile terminal in bullet train is with train high-speed mobile, the Serving cell of mobile terminal is cut constantly
Change.Fig. 2 is base station cell and its signal distributions schematic diagram of typical Along Railway, is wherein terminal operating direction and base station
The angle of cell（1 is mobile terminal and the line of base station 1 and the angle of motion of mobile terminals place direction line, and 2 is mobile whole
End and the line of base station 2 and the angle of motion of mobile terminals place direction line, 3 is line and the movement of mobile terminal and base station 3
Terminal is moved the angle of place direction line, and 4 is mobile terminal and the line of base station 4 and motion of mobile terminals place direction line
Angle）.Represent this mobile terminal more than 90 degree away from this base station, the service time that this base station can provide is remaining
Seldom；Represent this mobile terminal less than 90 degree near this base station, the service time that this base station can provide also compares relatively
Many, and the less operating path representing terminal, the closer to this base station cell, also means that the service that this base station cell can provide
Time is longer, service range is wider.
When the Serving cell of base station initiates switching, existing mobile terminal typically can be switched to signal strength signal intensity neighbour the strongest
Area, without considering that can this base station provide longer service time.The signal of adjacent area is considered in embodiments of the invention
Intensity and the service time being provided that filter out optimal adjacent area, only the measurement result of this optimal adjacent area are reported corresponding base
Stand, when base station Serving cell initiate switching when, mobile terminal be only switched into optimal adjacent area it is ensured that switching after Target cell energy
Enough offers longer service time, reduce switching times.
Preferably, described step S200 specifically includes：
If the current translational speed of step S201 is more than described First Speed threshold value, whether judge the gps signal of mobile terminal
Available；
Step S202, when the gps signal of mobile terminal can use, then obtain and be less than default spacing threshold with the distance of mobile terminal
The base station of value, and according to θ=arccos（fd*c）/（f*v）Obtain the line of mobile terminal and each base station respectively and mobile terminal
The angle of motion place direction line, and the signal strength signal intensity of each base station；Wherein, θ is line and the shifting of mobile terminal and base station
The angle of dynamic terminal motion place direction line, fd is the Doppler frequency shift between mobile terminal and base station, and c is Electromagnetic Wave Propagation speed
Degree, f is the current downlink operating frequency of base station, and v is the current translational speed of mobile terminal.
Doppler shift formula is fd=(f * v*cos θ)/c, and wherein fd is the Doppler's frequency between mobile terminal and base station
Move, c is propagation velocity of electromagnetic wave, f is the current downlink operating frequency of base station, v is the current translational speed of mobile terminal, θ is
Mobile terminal and the line of base station and the angle of motion of mobile terminals place direction line.Therefore can be derived according to Doppler shift formula
Obtain θ=arccos（fd*c）/（f*v）, and according to θ=arccos（fd*c）/（f*v）Obtain the company of mobile terminal and each base station
The line angle with motion of mobile terminals place direction line respectively.Pass in current downlink operating frequency f of known base station and electromagnetic wave
Broadcast speed c, if measure Doppler frequency shift fd and mobile terminal current translational speed v it is possible to calculate mobile terminal with
The line of base station and the angle theta of motion of mobile terminals place direction line.
Further, also include after described step S202：
Step S203, when the gps signal of mobile terminal is unavailable, then obtain each base station with respect to mobile terminal base station believe
Number change slope, and obtain base station signal to change slope be base station more than or equal to 0.
When gps signal is not available, then the variation tendency by measuring base station signal estimates running of mobile terminal direction
It is greater than 90 degree with the angle (representing identical parameter with θ) of base station and be also less than 90 degree.Base station signal change slope is just
Value, represents that running of mobile terminal direction and the angle of this base station are less than 90 degree；Base station signal change slope is negative value, represents and moves
Dynamic terminal operating direction is more than 90 degree with the angle of this base station cell.
Preferably, described step S300 specifically includes：
Step S301, when mobile terminal gps signal can use when, then determine whether base station signal strength signal intensity be more than described first
The angle of the line of signal strength threshold and mobile terminal and base station and motion of mobile terminals place direction line is in multiple angles
Minimum of a value base station；
If the signal strength signal intensity that step S302 has base station is more than described first signal strength threshold and the company of mobile terminal and base station
The angle of line and motion of mobile terminals place direction line is the base station of the minimum of a value in multiple angles, then by the connection of mobile terminal
Request reports to this base station；
If step S303 has the signal strength signal intensity of base station less than described first signal strength threshold and strong more than default secondary signal
Degree threshold value, the current translational speed of mobile terminal are more than the line of second speed threshold value, mobile terminal and the base station pre-setting
Angle with motion of mobile terminals place direction line is the base station of the minimum of a value in multiple angles, then please by the connection of mobile terminal
Ask and report to this base station；Wherein, described secondary signal intensity threshold is less than described first signal strength threshold, described second speed
Threshold value is more than First Speed threshold value.
When being embodied as, described First Speed threshold value may be configured as 200 kilometers/hour, and described second speed threshold value can set
It is set to 300 kilometers/hour.
Step S303 uses a kind of resident mechanism of high speed weak signal, and mobile terminal selection signal intensity is more than the second letter
Number intensity threshold and be less than the first signal strength threshold and the minimum adjacent area of angle as potentially optimal adjacent area, and only will
The measurement result of this potential optimal adjacent area reports current base station；Do not carry out the prediction of optimal adjacent area in the case of other, according to
Existing rule report measurement results.The purpose of the resident mechanism of above-mentioned high speed weak signal is to reduce switching times further.
When mobile terminal high-speed mobile, the signal intensity of the base station receiving quickly, may have potentially optimal adjacent area：Its angle
Less, but due to its signal strength signal intensity is slightly less than the first signal strength threshold and can not become optimal adjacent area, it is likely that in pole
Reach the first signal strength threshold in the short time and become optimal adjacent area.Although current base station signal is weaker but also may be used simultaneously
To maintain a period of time, therefore after the extremely short time, potentially optimal adjacent area is possible to become optimal adjacent area, because its folder
Angle is less, and the service time being provided that is longer, thus reducing switching times.
Preferably, also include in described step S300：
Step S304, when the gps signal of mobile terminal is unavailable, then obtain base station signal strength signal intensity be more than described first signal
The angle of the line of intensity threshold, mobile terminal and base station and motion of mobile terminals place direction line is less than the letter of 90 ° and base station
Number intensity is the base station of maximum, and the connection request of mobile terminal is reported to this base station.
It can be seen that, present invention achieves mobile terminal is during high-speed motion, the next optimal adjacent area of intelligent predicting, only
The measurement result of optimal adjacent area is reported respective base station it is ensured that base station is provided that longer service time after switching, to reduce
Cell pingpang handoff and the lateral unordered invalid switching of cell in front and back.
Based on said method embodiment, the present invention also provides a kind of prediction of mobile terminal optimal adjacent area to realize system.As Fig. 3
Shown, described mobile terminal optimal adjacent area prediction is realized system and is included：
Speed obtains judge module 100, for obtaining the current translational speed of mobile terminal, and whether judges current translational speed
More than the First Speed threshold value pre-setting；
Angle and signal strength signal intensity acquisition module 200, if be more than described First Speed threshold value for current translational speed, obtain
Be less than the base station of default spacing threshold with the distance of mobile terminal, and obtain the line of mobile terminal and each base station respectively and
The angle of motion of mobile terminals place direction line, and the signal strength signal intensity of each base station；
Report interconnection module 300, the signal strength signal intensity for obtaining base station is more than described first signal strength threshold and mobile terminal
With the line of base station and base station that the angle of motion of mobile terminals place direction line is the minimum of a value in multiple angles, and will move
The connection request of terminal reports to this base station.
Preferably, in described mobile terminal optimal adjacent area, prediction is realized in system, and described angle and signal strength signal intensity obtain mould
Block 200 specifically includes：
First judging unit, if be more than described First Speed threshold value for current translational speed, judges the GPS of mobile terminal
Whether signal can use；
Angle acquiring unit, for when the gps signal of mobile terminal can use, then obtain with the distance of mobile terminal be less than default
The base station of spacing threshold, and according to θ=arccos（fd*c）/（f*v）The line obtaining mobile terminal with each base station respectively and moves
The angle of dynamic terminal motion place direction line, and the signal strength signal intensity of each base station；Wherein, θ is the company of mobile terminal and base station
Line and the angle of motion of mobile terminals place direction line, fd is the Doppler frequency shift between mobile terminal and base station, and c is electromagnetic wave
Spread speed, f is the current downlink operating frequency of base station, and v is the current translational speed of mobile terminal.
Preferably, in described mobile terminal optimal adjacent area, prediction is realized in system, and described angle and signal strength signal intensity obtain mould
Block 200 also includes：
Base station information acquiring unit, for when the gps signal of mobile terminal is unavailable, then obtaining each base station with respect to movement
The base station signal change slope of terminal, and obtain the base station that base station signal change slope is more than or equal to 0.
Preferably, in described mobile terminal optimal adjacent area, prediction is realized in system, described reports interconnection module 300 specifically to wrap
Include：
Second judging unit, for when the gps signal of mobile terminal can use, then determining whether that the signal strength signal intensity of base station is more than
The angle of the line of described first signal strength threshold and mobile terminal and base station and motion of mobile terminals place direction line is many
The base station of the minimum of a value in individual angle；
First interconnection unit, if the signal strength signal intensity for there being base station be more than described first signal strength threshold and mobile terminal with
The angle of the line of base station and motion of mobile terminals place direction line is the base station of the minimum of a value in multiple angles, then will move end
The connection request at end reports to this base station；
Second interconnection unit, if the signal strength signal intensity for there being base station is less than described first signal strength threshold and more than default the
Binary signal intensity threshold, the current translational speed of mobile terminal are more than second speed threshold value, mobile terminal and the base pre-setting
The line stood and the base station that the angle of motion of mobile terminals place direction line is the minimum of a value in multiple angles, then by mobile terminal
Connection request report to this base station；Wherein, described secondary signal intensity threshold is less than described first signal strength threshold, described
Second speed threshold value is more than First Speed threshold value.
Preferably, in described mobile terminal optimal adjacent area, prediction is realized in system, described reports interconnection module 300 also to wrap
Include：
3rd interconnection unit, the signal strength signal intensity for when the gps signal of mobile terminal is unavailable, then obtaining base station is more than described
The angle of the line of the first signal strength threshold, mobile terminal and base station and motion of mobile terminals place direction line be less than 90 ° and
The signal strength signal intensity of base station is the base station of maximum, and the connection request of mobile terminal is reported to this base station.
In sum, mobile terminal provided by the present invention optimal adjacent area prediction realization method and system, method includes：Obtain
Take the current translational speed of mobile terminal, and judge current translational speed whether more than the First Speed threshold value pre-setting；If
When current translational speed is more than described First Speed threshold value, then obtains and the distance of mobile terminal is less than default spacing threshold
Base station, and obtain the line of mobile terminal and each base station respectively and motion of mobile terminals place direction line angle, and often
The signal strength signal intensity of one base station；The signal strength signal intensity obtaining base station is more than described first signal strength threshold and mobile terminal and base station
Line and motion of mobile terminals place direction line angle be the minimum of a value in multiple angles base station, and by mobile terminal
Connection request reports to this base station.Present invention achieves mobile terminal is during high-speed motion, the intelligent predicting next one is
The measurement result of optimal adjacent area is only reported respective base station it is ensured that base station is when being provided that longer service after switching by good adjacent area
Between, with cell pingpang handoff before and after reducing and the lateral unordered invalid switching of cell.
One of ordinary skill in the art will appreciate that all or part of flow process in above-described embodiment method, can be by
Computer program completes come the hardware to instruct correlation, and described computer program can be stored in a computer read/write memory medium
In, program is upon execution, it may include the flow process of the embodiment of above-mentioned each method.Storage medium therein can for magnetic disc, CD,
Read-only memory（ROM）Or random access memory（RAM）Deng.
It should be appreciated that the application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can
To be improved according to the above description or to convert, all these modifications and variations all should belong to the guarantor of claims of the present invention
Shield scope.
Claims (10)
1. a kind of mobile terminal optimal adjacent area prediction implementation method is it is characterised in that the method comprising the steps of：
A, the current translational speed of acquisition mobile terminal, and judge current translational speed whether more than the First Speed pre-setting
Threshold value；
If the current translational speed of B is more than described First Speed threshold value, obtain and mobile terminal distance be less than default between
Away from the base station of threshold value, and obtain the line of mobile terminal and each base station respectively and motion of mobile terminals place direction line folder
Angle, and the signal strength signal intensity of each base station；
C, the signal strength signal intensity of acquisition base station are more than described first signal strength threshold and the line of mobile terminal and base station and movement
The angle of terminal motion place direction line is the base station of the minimum of a value in multiple angles, and the connection request of mobile terminal is reported
To this base station.
2. the optimal adjacent area of mobile terminal predicts implementation method it is characterised in that described step B is concrete according to claim 1
Including：
If the current translational speed of B1 is more than described First Speed threshold value, judge whether the gps signal of mobile terminal can use；
B2, when the gps signal of mobile terminal can use, then obtain the base being less than default spacing threshold with the distance of mobile terminal
Stand, and according to θ=arccos（fd*c）/（f*v）Obtain the line of mobile terminal and each base station respectively and motion of mobile terminals institute
In the angle of direction line, and the signal strength signal intensity of each base station；Wherein, θ is line and the mobile terminal of mobile terminal and base station
The angle of motion place direction line, fd is the Doppler frequency shift between mobile terminal and base station, and c is propagation velocity of electromagnetic wave, and f is
The current downlink operating frequency of base station, v is the current translational speed of mobile terminal.
3. according to claim 2 mobile terminal optimal adjacent area prediction implementation method it is characterised in that after described step B2
Also include：
B3, when the gps signal of mobile terminal is unavailable, then obtain each base station with respect to mobile terminal base station signal change
Slope, and obtain the base station that base station signal change slope is more than or equal to 0.
4. the optimal adjacent area of mobile terminal according to Claims 2 or 3 prediction implementation method is it is characterised in that described step C has
Body includes：
C1, when mobile terminal gps signal can use when, then determine whether base station signal strength signal intensity be more than described first signal strong
Degree threshold value and mobile terminal and the minimum that the line of base station and the angle of motion of mobile terminals place direction line are in multiple angles
The base station of value；
If the signal strength signal intensity that C2 has base station is more than described first signal strength threshold and the line of mobile terminal and base station and shifting
The angle of dynamic terminal motion place direction line is the base station of the minimum of a value in multiple angles, then by the connection request of mobile terminal
Report to this base station；
If the signal strength signal intensity that C3 has base station is less than described first signal strength threshold and is more than default secondary signal intensity threshold
Value, the current translational speed of mobile terminal are more than the line of second speed threshold value, mobile terminal and base station pre-setting and shifting
The angle of dynamic terminal motion place direction line is the base station of the minimum of a value in multiple angles, then by the connection request of mobile terminal
Report to this base station；Wherein, described secondary signal intensity threshold is less than described first signal strength threshold, described second speed threshold value
More than First Speed threshold value.
5. implementation method is predicted it is characterised in that going back in described step C in the optimal adjacent area of mobile terminal according to claim 4
Including：
C4, when the gps signal of mobile terminal is unavailable, then obtain base station signal strength signal intensity be more than described first signal strength signal intensity threshold
The angle of the line of value, mobile terminal and base station and motion of mobile terminals place direction line is less than the signal strength signal intensity of 90 ° and base station
For the base station of maximum, and the connection request of mobile terminal is reported to this base station.
6. a kind of mobile terminal optimal adjacent area prediction realizes system it is characterised in that described system includes：
Speed obtains judge module, for obtaining the current translational speed of mobile terminal, and judges whether current translational speed is big
In the First Speed threshold value pre-setting；
Angle and signal strength signal intensity acquisition module, if be more than described First Speed threshold value for current translational speed, obtain with
The distance of mobile terminal is less than the base station of default spacing threshold, and obtains the line of mobile terminal and each base station and respectively and move
The angle of dynamic terminal motion place direction line, and the signal strength signal intensity of each base station；
Report interconnection module, the signal strength signal intensity for obtaining base station be more than described first signal strength threshold and mobile terminal with
The angle of the line of base station and motion of mobile terminals place direction line is the base station of the minimum of a value in multiple angles, and will move end
The connection request at end reports to this base station.
7. the prediction of mobile terminal optimal adjacent area realizes system it is characterised in that described angle and signal according to claim 6
Intensity acquisition module specifically includes：
First judging unit, if be more than described First Speed threshold value for current translational speed, judges the GPS of mobile terminal
Whether signal can use；
Angle acquiring unit, for when the gps signal of mobile terminal can use, then obtain with the distance of mobile terminal be less than default
The base station of spacing threshold, and according to θ=arccos（fd*c）/（f*v）The line obtaining mobile terminal with each base station respectively and moves
The angle of dynamic terminal motion place direction line, and the signal strength signal intensity of each base station；Wherein, θ is the company of mobile terminal and base station
Line and the angle of motion of mobile terminals place direction line, fd is the Doppler frequency shift between mobile terminal and base station, and c is electromagnetic wave
Spread speed, f is the current downlink operating frequency of base station, and v is the current translational speed of mobile terminal.
8. the prediction of mobile terminal optimal adjacent area realizes system it is characterised in that described angle and signal according to claim 7
Intensity acquisition module also includes：
Base station information acquiring unit, for when the gps signal of mobile terminal is unavailable, then obtaining each base station with respect to movement
The base station signal change slope of terminal, and obtain the base station that base station signal change slope is more than or equal to 0.
9. the prediction of the optimal adjacent area of mobile terminal according to claim 7 or 8 realizes system it is characterised in that described report mutually
Gang mould block specifically includes：
Second judging unit, for when the gps signal of mobile terminal can use, then determining whether that the signal strength signal intensity of base station is more than
The angle of the line of described first signal strength threshold and mobile terminal and base station and motion of mobile terminals place direction line is many
The base station of the minimum of a value in individual angle；
First interconnection unit, if the signal strength signal intensity for there being base station be more than described first signal strength threshold and mobile terminal with
The angle of the line of base station and motion of mobile terminals place direction line is the base station of the minimum of a value in multiple angles, then will move end
The connection request at end reports to this base station；
Second interconnection unit, if the signal strength signal intensity for there being base station is less than described first signal strength threshold and more than default the
Binary signal intensity threshold, the current translational speed of mobile terminal are more than second speed threshold value, mobile terminal and the base pre-setting
The line stood and the base station that the angle of motion of mobile terminals place direction line is the minimum of a value in multiple angles, then by mobile terminal
Connection request report to this base station；Wherein, described secondary signal intensity threshold is less than described first signal strength threshold, described
Second speed threshold value is more than First Speed threshold value.
10. the prediction of mobile terminal optimal adjacent area realizes system it is characterised in that described report interconnection according to claim 9
Module also includes：
3rd interconnection unit, the signal strength signal intensity for when the gps signal of mobile terminal is unavailable, then obtaining base station is more than described
The angle of the line of the first signal strength threshold, mobile terminal and base station and motion of mobile terminals place direction line be less than 90 ° and
The signal strength signal intensity of base station is the base station of maximum, and the connection request of mobile terminal is reported to this base station.
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