CN103874145B - Carry out method, switching device and the mobile terminal of cell switching - Google Patents
Carry out method, switching device and the mobile terminal of cell switching Download PDFInfo
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- CN103874145B CN103874145B CN201410098950.2A CN201410098950A CN103874145B CN 103874145 B CN103874145 B CN 103874145B CN 201410098950 A CN201410098950 A CN 201410098950A CN 103874145 B CN103874145 B CN 103874145B
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Abstract
There is provided a kind of method, switching device and mobile terminal for carrying out cell switching in a communications system.Cell switching is carried out when the performance parameter for the signal that the mobile terminal can be detected at it reaches default handoff threshold, methods described is included in the performance parameter of the signal and reaches the following steps performed before the default handoff threshold value：Obtain the movement state information of the mobile terminal；Obtain the current communication status information of the mobile terminal；Judge whether to need to carry out cell switching in advance based on the movement state information and the current communication status information；When needing to carry out cell switching in advance, the mobile terminal is switched to new cell from current area.In technical scheme according to embodiments of the present invention, cell switching is carried out by the movement state information based on mobile terminal and current communication status information in advance, influence of the cell handover operations to the communication of mobile terminal can be reduced, so as to improve the usage experience of user.
Description
Technical field
The present invention relates to communication technical field, more particularly, to a kind of side for carrying out cell switching in a communications system
Method, switching device and the mobile terminal including the switching device.
Background technology
In recent years, with the development of the communication technology, various mobile terminals are occurred in that, such as notebook, intelligence are logical
Believe terminal and personal digital assistant etc..These mobile terminals have good communication performance so that mobile terminal can transmit language
The information such as sound, data.In addition, these mobile terminals generally have excellent portability, so that user is in different positions
Advantageously communicated.
In each communication system, the signal coverage areas of each base station is generally divided into one or more cells, often
The signal cover of individual cell is relatively-stationary.As the motion of mobile terminal is, it is necessary to carry out cell switching, so as to ensure
The communication performance of mobile terminal.
In existing handoff technique, mobile terminal can detect the communication performance for the current area being currently located, and
Cell handover request is sent to associated base stations when the communication performance reaches preparatory condition, to perform cell switching.Performing
During switching, mobile terminal needs to send and receive a series of instruction and information, to realize switching.Now, if institute
State mobile terminal to be communicated, then cell switching can have a strong impact on the communication of mobile terminal, so as to reduce user's
Usage experience.
Accordingly, it would be desirable to which a kind of cell handoff technique reduces the influence of the communication to mobile terminal, to improve making for user
With experience.
The content of the invention
The embodiments of the invention provide a kind of method for carrying out cell switching in a communications system, switching device and including this
The mobile terminal of switching device, it can reduce influence of the cell handover operations to the communication of mobile terminal, to improve user's
Usage experience.
On the one hand there is provided a kind of method for carrying out cell switching in a communications system for mobile terminal, the shifting
Cell switching, methods described are carried out when the performance parameter for the signal that dynamic terminal can be detected at it reaches default handoff threshold
The performance parameter that may include in the signal reaches the following steps performed before the default handoff threshold value：Obtain described
The movement state information of mobile terminal；Obtain the current communication status information of the mobile terminal；Based on motion state letter
Breath and the current communication status information judge whether to need to carry out cell switching in advance, generate the first judged result；Described
First judged result is indicated when needing to carry out cell switching in advance, and the mobile terminal is switched into new cell from current area.
In the method for the progress cell switching, the movement state information for obtaining the mobile terminal may include note
Movement locus of the mobile terminal in a past period is recorded as the motion related information；It is described to obtain described move
The current communication status information of dynamic terminal may include to judge whether the mobile terminal currently transmits data, generate second and sentence
Disconnected result, and it regard second judged result as the current communication status.
It is described to be based on the movement state information and the current communication status in the method for the progress cell switching
Information, which judges whether to need to carry out cell switching in advance, may include：Judge the performance parameter of the mobile terminal whether described in
Default handoff threshold value；When the performance parameter of the mobile terminal is close to the default handoff threshold value, based on described
Current communication status judges whether the mobile terminal currently transmits data；When judging institute based on the current communication status
When stating mobile terminal currently without transmission data, judgement needs to carry out cell switching in advance.
It is described to be based on the movement state information and the current communication status in the method for the progress cell switching
Information judges whether to need to carry out cell switching in advance and may also include：When based on the current communication status judge it is described it is mobile eventually
When data are currently transmitted in end, judge not carry out cell switching in advance.
In the method for the progress cell switching, the mobile terminal can have global positioning system apparatus, described to incite somebody to action
The mobile terminal is switched to new cell from current area may include：The movement is obtained using the global positioning system apparatus
The movement locus of terminal and current location；Each neighbor cell of the mobile terminal is determined based on the current location；It is based on
The movement locus selects the new cell that the mobile terminal to be switched to from each neighbor cell；With by mobile terminal from work as
Preceding cell is switched to the new cell.
In the method for the progress cell switching, the number of the neighbor cell can be at least two, described to be based on
The movement locus selects the mobile terminal new cell to be switched to may include from each neighbor cell：Based on the fortune
Dynamic rail mark selects a preferable cell from each neighbor cell；Detect the performance parameter of the preferable cell；When the preferable cell
Performance parameter when meeting predetermined condition, regard the preferable cell as the new cell.
In the method for the progress cell switching, it may also include：When the mobile terminal is covered by least two cells
Gai Shi, judges whether at least two cell belongs to identical communication system, and generates the 3rd judged result；When the 3rd judgement
When as a result indicating that at least two cell is not belonging to identical communication system, perform described based on movement state information and current
Communications condition information judges whether to need to carry out cell switching in advance.
On the other hand there is provided a kind of switching device for carrying out cell switching in a communications system for mobile terminal,
The switching device may include：Switch unit, the performance parameter for the signal that can be detected in mobile terminal reaches default switching
Cell switching is carried out during thresholding；Acquiring unit, before the performance parameter of the signal reaches the default handoff threshold value,
The movement state information of the mobile terminal is obtained, and obtains the current communication status information of the mobile terminal；First judges
Unit, for judging whether to need to carry out cell in advance based on the movement state information and the current communication status information to cut
Change, generate the first judged result, wherein, the switch unit is indicated in first judged result to be needed to carry out cell in advance to cut
New cell is switched to when changing, by the mobile terminal from current area.
In the switching device, the acquiring unit may include：Recording-member, for recording the mobile terminal in mistake
Movement locus in the period gone is used as the motion related information, judgement part, for judging that the mobile terminal is worked as
It is preceding whether to transmit data, the second judged result is generated, and regard second judged result as the current communication status.
In the switching device, first judging unit can be by operating based on movement state information and current as follows
Communications condition information judges whether to need to carry out cell switching in advance：Judge the performance parameter of the mobile terminal whether close to institute
State default handoff threshold value；When the performance parameter of the mobile terminal is close to the default handoff threshold value, based on institute
State current communication status and judge whether the mobile terminal currently transmits data；Judge when based on the current communication status
When the mobile terminal is currently without transmission data, judgement needs to carry out cell switching in advance.
In the switching device, first judging unit can judge described move based on the current communication status
When dynamic terminal is currently transmitting data, judge not carry out cell switching in advance.
In the switching device, the mobile terminal can have global positioning system apparatus, and the acquiring unit can be with
Movement locus and the current location of the mobile terminal are obtained using the global positioning system apparatus, the switch unit can be wrapped
Include：Part is determined, the current location for being obtained based on the acquiring unit determines each neighbor cell of the mobile terminal；
Alternative pack, the movement locus for being obtained based on the acquiring unit selects the mobile terminal will from each neighbor cell
The new cell being switched to；And switching part, for mobile terminal to be switched into the new cell from current area.
In the switching device, the number of the neighbor cell can be at least two, and the alternative pack can pass through
The following operation selection mobile terminal new cell to be switched to：Selected based on the movement locus from each neighbor cell
One preferable cell；Obtain the performance parameter of the preferable cell；, will when the performance parameter of the preferable cell meets predetermined condition
The preferable cell is used as the new cell.
In the switching device, it can also include：3rd judging unit, for when the mobile terminal is by least two
When cell is covered, judge whether at least two cell belongs to identical communication system, and generate the 3rd judged result.Institute
Stating the first judging unit can be when the 3rd judged result indicates that at least two cell is not belonging to identical communication system, base
Judge whether to need to carry out cell switching in advance in movement state information and current communication status information.
There is provided a kind of mobile terminal, including switching device as described above for another aspect.
In the according to embodiments of the present invention method, switching device and the mobile terminal that carry out cell switching in a communications system
Technical scheme in, cell is carried out by the movement state information based on mobile terminal and current communication status information in advance and cut
Change, influence of the cell handover operations to the communication of mobile terminal can be reduced, so as to improve the usage experience of user.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art
The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention
Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 be a diagram that the schematic diagram that mobile terminal is switched between the different districts of communication system；
Fig. 2 be a diagram that the method that mobile terminal according to embodiments of the present invention is switched between different cells
Flow chart；
Fig. 3 be a diagram that judging whether in Fig. 2 method switched between different cells needs to enter in advance
The flow chart of the operation of row cell switching；
Fig. 4 be a diagram that being switched to newly from current area in Fig. 2 method switched between different cells
The flow chart of the operation of cell；
Fig. 5 schematically illustrates the block diagram of switching device according to embodiments of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is a part of embodiment of the invention, rather than whole embodiments.
Fig. 1 be a diagram that the schematic diagram that mobile terminal is switched between the different districts of communication system.
As shown in figure 1, mobile terminal T1 is in the region that three different cell C1, C2, C3 are collectively covered.The movement
Terminal T1 can be for example mobile phone and notebook, can also be portable, pocket, hand-held, computer
Built-in or vehicle-mounted mobile device, its can be communicated with each cell under different base station transmit voice and/or
Data.
When the mobile terminal T1 cell C1 being currently located communication performance is poor and communication performance of cell C2 or C3 is preferable
When, the mobile terminal T1 may need to be switched to the cell C2 or C3 from the cell C1 being currently located.Typically, it is described to move
The performance parameter for the signal that dynamic terminal T1 can be detected at it（That is the performance parameter of current area）Reach default switching door
Cell switching is carried out in limited time.Signal intensity of the performance parameter such as detected by can be mobile terminal T1, signal to noise ratio,
When the signal intensity detected by mobile terminal T1 is less than or equal to the letter detected by the first predetermined threshold or mobile terminal T1
Number signal to noise ratio when being less than or equal to the second predetermined threshold, mobile terminal T1 will perform cell switching, and be no longer on cell C1.
In addition, the mobile terminal T1 can also by its cell C1 signal performance parameter with its in cell C2 or C3
The performance parameter of signal be compared, and therefrom the best cell of selection performance as communication cell, if for example it is mobile eventually
The performance parameter of signal of the performance parameter better than cell C2 or C3 of the signal of cell C1 where the T1 of end, then by mobile terminal T1
It is maintained at cell C1 and switches without cell；If the performance parameter of the signal of the cell C2 is better than cell C1 and C3 letter
Number performance parameter, then mobile terminal T1 is switched to cell C2 from current cell C1.In Fig. 1, mobile terminal T1 is by three
Individual cell C1, C2, C3 are covered, and this is only schematical, and mobile terminal T1 can be by two cells（Such as cell C1 and
C2 or cell C1 and C3）Or four cells are covered.
Each cell can be located in different communication systems, such as described cell C1 can be global system for mobile communications
（GSM）Under cell, the cell C2 can be CDMA（CDMA）Cell under communication system, the cell C3 can be
Long Term Evolution（LTE）Cell under communication system；Each cell can also be located in identical communication system, for example, cell C1,
At least two in C2, C3 can be located at global system for mobile communications（GSM）Or Long Term Evolution（LTE）Communication system.It is described here
Each cell at communication system be only schematical, the type of the communication system at each cell is not constituted
Limitation to the embodiment of the present invention.
The mobile terminal T1 is when carrying out cell switching, it is necessary to send and receive a series of instruction and information to interrupt
It is new logical to set up that a series of interactive operation is carried out with the base station of the communication of current area, and needs and the new cell to be switched to
Believe link.If performing cell switching when the mobile terminal is communicated, cell switching can cause mobile terminal
Communication interruption or delay, so as to reduce the usage experience of user.
In an embodiment of the present invention, before mobile terminal T1 is switched over according to traditional handoff technique, obtaining should
Mobile terminal T1 movement state information and current communication status information, and based on described information judge whether to need to carry out in advance
Cell switches, and the mobile terminal is switched into new cell from current area when needing to carry out cell switching in advance.
That is, it is possible to carry out cell switching in advance when needed, to avoid carrying out cell switching during mass data transmission is carried out,
So as to reduce influence of the cell handover operations to the communication of mobile terminal, and improve the usage experience of user.
Fig. 2 be a diagram that the method that mobile terminal according to embodiments of the present invention is switched between different cells
200 flow chart.The method 200 switched between different cells can apply to mobile terminal as shown in Figure 1,
Cell switching is carried out when the performance parameter for the signal that the mobile terminal can be detected at it reaches default handoff threshold.Institute
State in the method 200 switched between different cells, the performance parameter of the signal of cell is currently located in mobile terminal
Reach before the default handoff threshold value, judge whether to need to carry out cell in advance based on the information of the mobile terminal
Switching, and correspondingly carry out cell switching in advance when needed.
As shown in Fig. 2 the method 200 switched between different cells may include：Obtain described mobile whole
The movement state information at end（S210）；Obtain the current communication status information of the mobile terminal（S220）；Based on the motion
Status information and the current communication status information judge whether to need to carry out cell switching in advance, generate the first judged result
（S230）；First judged result indicate need to carry out cell switching in advance when, by the mobile terminal from current area
It is switched to new cell（S240）.
In S210, the movement state information of the mobile terminal is obtained.The movement state information for example can be institute
State the information such as movement locus, movement velocity, the direction of motion of mobile terminal.Because the scope of different cells is to be relatively fixed
, so if knowing movement state information of the mobile terminal within the past period, it is possible to estimate the motion in its future
Trend, and correspondingly tentatively judge whether that cell switching will be carried out.
As an example, the mobile terminal T1 in Fig. 1 in past ten minutes rapidly to the cell C1 from left side to the right
The cell C2 movements of side, be now arranged in cell C1 and cell C2 collectively covers region, the movement velocity according to mobile terminal T1
（For example, current movement velocity or the average speed in past ten minutes）, mobile terminal T1 will leave after the 2 minutes
Cell C1, C2 collectively covers scope, and the scope that is individually covered in cell C2, now it may determine that the mobile terminal
T1 will be switched to cell C2 from current cell C1.Of course, it is possible to record and update in real time the motion shape of the mobile terminal
State information, to judge whether mobile terminal will carry out cell switching and the new cell to be switched to exactly.If for example, moved
Dynamic terminal T1 is after the cell C2 from the cell C1 in left side to the right moves a period of time, cell C3 movements upward suddenly,
It can then determine that mobile terminal T1 may be switched to cell C3.The movement state information for example can be using on mobile terminal
Global positioning system is obtained, and can also be obtained from the base station for the mobile terminal T1 cells being currently located.
In S220, the current communication status information of the mobile terminal is obtained.The current communication status information is for example
It can be whether the mobile terminal is carried out type of service etc. when being communicated and being communicated.Such as preceding institute
State, if mobile terminal performed during being communicated cell switching, may cause communicated content delay or
Lose, this can greatly reduce the usage experience of user.Therefore, the current communication status letter of mobile terminal is obtained in S220
Breath, to avoid carrying out cell switching in communication process.
The current communication status information may include the condition information for the communication service that cell switching is influenced whether, for example, move
Move the voice communication of terminal, utilize general packet radio service（GPRS, General Packet Radio Service) technology
Data communication of progress etc..Wireless Fidelity is utilized in the mobile terminal（WiFi）Technology, WLAN（WLAN）Skill
When art foradownloaded video, audio, upload audio, photo etc., this kind of communication is not influenceed by the base station of cell where mobile terminal,
Therefore, the current communication status information of the mobile terminal obtained in S220 can not be using such as WiFi, WLAN technology
The status information communicated.In addition it is also possible to obtain the communication of all communication types of the current progress of the mobile terminal
Condition information, and the communication that cell switching is not interfered with is excluded from the current communication status information in subsequent use
The condition information of business.
In S230, judge whether to need to enter in advance based on the movement state information and the current communication status information
Row cell switches, and generates the first judged result.If true according to the movement state information of the mobile terminal obtained in S210
Determine that mobile terminal is advanced to new cell and current communication status information based on the mobile terminal obtained in S220 is true
The fixed mobile terminal then judges to need to carry out in advance currently without the communication service that cell switching can influence is carried out in S230
Cell switches.That is, being cut in by switching in cell without that can be communicated by cell switching application so as to reduce cell
Influence of the operation to the communication of mobile terminal is changed, and improves the usage experience of user.
If determining mobile terminal not to new small according to the movement state information of the mobile terminal obtained in S210
Area is moved, or the current communication status information based on the mobile terminal obtained in S220 determines that the mobile terminal is current just
The communication service that cell switching can influence is being carried out, then is judging that cell switching need not be carried out in advance in S230.
Fig. 3 be a diagram that judging whether in Fig. 2 method switched between different cells needs to enter in advance
The flow chart of the operation of row cell switching.As shown in figure 3, judging whether the performance parameter of the mobile terminal is preset close to described
Handoff threshold value（S231）；When the performance parameter of the mobile terminal is close to the default handoff threshold value（In S231
Be）, judge whether the mobile terminal currently transmits data based on the current communication status（S232）；When based on institute
State current communication status judge the mobile terminal currently without transmission data when（It is no in S232）, judge to need to carry out in advance
Cell switches（S233）；When judging that the mobile terminal currently transmits data based on the current communication status（S232
In be）, judge not carry out cell switching in advance（S234）.
, can be based on mobile terminal in judging whether shown in Fig. 3 needs to carry out the operation of cell switching in advance
After movement state information determines that mobile terminal is advanced to new cell（It is i.e. preliminary to judge to carry out cell switching）, utilize
S231 come further confirm that cell switching execution, with ensure exactly carry out cell switching.In S231, the movement is judged
Whether the performance parameter of terminal is close to the default handoff threshold value, when the performance parameter of the mobile terminal is close to described pre-
If handoff threshold value when, it is meant that close on carry out cell switching switching point, cell switching will occur.It is described close to can be with
The lead switched according to cell is set, such as when it is desirable that carrying out cell switching for a long time in advance, can will described in
The performance parameter of mobile terminal differs a larger difference with the default handoff threshold value and is judged as approaching；When it is desirable that in advance compared with
When carrying out cell switching in short time, the performance parameter of the mobile terminal can be differed with the default handoff threshold value
One smaller difference is judged as approaching.As it was previously stated, the performance parameter of mobile terminal can be the signal intensity of mobile terminal, noise
Than etc., can be set with reference to specific performance parameter described in smaller difference and larger difference.Those skilled in the art can be with
Judge whether the performance parameter of the mobile terminal is preset close to described according to the difference of the performance parameter of the mobile terminal
Handoff threshold value.
In S232, judge whether the mobile terminal currently transmits data based on the current communication status, with
Judgement needs to carry out cell switching in advance.Can based on all communication services of mobile terminal current communication status to judge
State whether mobile terminal currently transmits data, can also be according to the communication service related to cell switching of mobile terminal
Current communication status judges whether the mobile terminal currently transmits data., for example can be from the case of the latter
The data communication carried out using WiFi, WLAN technology is excluded in current communication status, so as to more accurately judge present communications shape
Condition is appropriate for that cell switches.
Enter row data communication in mobile terminal or carry out certain types of data communication（For example, utilizing
The data communication that GPRS technologies are carried out）In the case of, judge not carry out cell switching in advance in S234.Generally, in voice communication
When the portfolio that is transmitted it is smaller, being switched by cell is influenceed also relatively small, even if so mobile terminal is carrying out voice leads to
Letter, can also judge not carry out cell switching in advance in S234.Eliminated in S232-S234 from current communication status
Voice communication, only when entering row data communication, judges not carry out cell switching in advance.However, in practice, can also be in movement
Terminal is carried out under any signal intelligence, all judges not carry out cell switching in advance in S234.
In S240, first judged result indicate need to carry out cell switching in advance when, by the mobile terminal
New cell is switched to from current area.In S240, it is first determined the new cell to be switched to, then by the mobile terminal from
Current area is switched to new cell.In the case where mobile terminal has global positioning system apparatus, it can be based on using described
Global positioning system apparatus obtains movement locus and the current location of the mobile terminal；Determined based on the current location described
Each neighbor cell of mobile terminal；The mobile terminal is selected to switch from each neighbor cell based on the movement locus
The new cell arrived.
, for example can be from current small with the mobile terminal further, it is also possible to determine new cell using existing means
The big cell of selection signal intensity in the adjacent neighbor cell in area, uses a variety of new cells of determination in which can be combined with
Mode, so as to ensure the excellent communication performance after cell switching.
Fig. 4 be a diagram that being switched to newly from current area in Fig. 2 method switched between different cells
The flow chart of the operation of cell.It the mobile terminal is switched to new cell from current area may include as shown in figure 4, described：
Movement locus and the current location of the mobile terminal are obtained using the global positioning system apparatus（S241）；Worked as based on described
Front position determines each neighbor cell of the mobile terminal（S242）；Selected based on the movement locus from each neighbor cell
Select a preferable cell（S243）；Detect the performance parameter of the preferable cell（S244）；When the performance parameter of the preferable cell expires
During sufficient predetermined condition, the preferable cell is regard as the new cell（S245）；With by mobile terminal institute is switched to from current area
State new cell（S246）.In Fig. 4 S241-S243, movement locus and current location selection based on mobile terminal may be made
For the preferable cell of new cell, and via after the further determining that of S244-S245, so as to ensure mobile terminal in the new cell
Communication performance.Further, it is also possible to which after S241-S242, institute is selected from each neighbor cell based on the movement locus
State the mobile terminal new cell to be switched to.
In addition, can also include in the method 200 of the carry out cell switching shown in Fig. 2：When the mobile terminal is by extremely
When few two cells are covered, judge whether at least two cell belongs to identical communication system, and generate the 3rd judgement
As a result；When the 3rd judged result indicates that at least two cell is not belonging to identical communication system, the S230 is performed, i.e.,
Judge whether to need to carry out cell switching in advance based on movement state information and current communication status information.When mobile terminal is not
, it is necessary to perform more instruction transmission and receive operation when being switched between the cell for belonging to same communication system, more should
Avoid being communicated during cell switches.Therefore, judge whether based on movement state information and current communication status information
Before needing to carry out cell switching in advance, it can be determined that whether the current area and neighbor cell of mobile terminal, which belong to identical, leads to
Letter system.
In the technical scheme of the method for the cell switching of progress in a communications system according to embodiments of the present invention, pass through base
Cell switching is carried out in advance in the movement state information and current communication status information of mobile terminal, can reduce cell switching behaviour
Make the influence of the communication to mobile terminal, so as to improve the usage experience of user.
Fig. 5 schematically illustrates the block diagram of switching device 500 according to embodiments of the present invention.The switching device 500 can be with
Applied to mobile terminal as shown in Figure 1 or any other electronic equipment that can be communicated.
As shown in figure 5, the switching device 500 may include：Switch unit 510, the letter that can be detected in mobile terminal
Number performance parameter carry out cell switching when reaching default handoff threshold；Acquiring unit 520, in the performance parameter of the signal
Reach before the default handoff threshold value, obtain the movement state information of the mobile terminal, and obtain described mobile whole
The current communication status information at end；First judging unit 530, for based on the movement state information and the present communications shape
Condition information judges whether to need to carry out cell switching in advance, generates the first judged result, wherein, the switch unit 510 is in institute
State the first judged result indicate when needing to carry out cell switching in advance, the mobile terminal is switched to from current area it is new small
Area.
The performance parameter for the signal that the switch unit 510 can be detected in mobile terminal reaches default handoff threshold
Shi Jinhang cells switch.Signal intensity of the performance parameter such as detected by can be mobile terminal, signal to noise ratio, work as shifting
Noise of the signal intensity less than or equal to the signal detected by the first predetermined threshold or mobile terminal detected by dynamic terminal
During than less than or equal to the second predetermined threshold, switch unit 510 performs cell switching, and correspondingly mobile terminal is no longer on current small
Area.
The movement state information of mobile terminal acquired in acquiring unit 520 for example can be the motion of the mobile terminal
The information such as track, movement velocity, the direction of motion.For example, acquiring unit 520 may include recording-member 521, the recording-member 521
Movement locus of the mobile terminal in a past period is recorded as the motion related information.Due to different small
The scope in area is relatively-stationary, so if knowing movement state information of the mobile terminal within the past period, so that it may
To estimate the movement tendency in its future, and tentatively judge whether that cell switching will be carried out.The acquiring unit 520 can also be in real time
Obtain and update the movement state information of the mobile terminal, with judge exactly mobile terminal whether to carry out cell switching,
With the new cell to be switched to.If for example, cell C2s of the mobile terminal T1 in the cell C1 from left side to the right shown in Fig. 1
After mobile a period of time, cell C3 movements upward, then can determine that mobile terminal T1 may be switched to cell C3 suddenly.Institute
Stating movement state information can for example be obtained using the global positioning system on mobile terminal, can also be from for mobile terminal
The base station of the cell being currently located is obtained.
The current communication status information of mobile terminal acquired in acquiring unit 520 for example can be that the mobile terminal is
No is carried out type of service etc. when being communicated and being communicated.For example, acquiring unit 520 may include to judge
Part 522, the judgement part 522 judges whether the mobile terminal currently transmits data, generates the second judged result, and
It regard second judged result as the current communication status.If mobile terminal performs cell during being communicated and cut
Change, then may cause delay or the loss of communicated content, this can greatly reduce the usage experience of user.Therefore, obtaining
Unit 520 is taken to obtain the current communication status information of mobile terminal, to avoid carrying out cell switching in communication process.
The current communication status information may include the condition information for the communication service that cell switching is influenced whether, for example, move
The voice communication of dynamic terminal, the data communication carried out using GPRS technologies etc..Wireless Fidelity is utilized in the mobile terminal
（WiFi）Technology, WLAN（WLAN）When technology foradownloaded video, audio, upload audio, photo etc., this kind of data communication is not
Influenceed by the base station of cell where mobile terminal, therefore, judgement part 522 can not judge to utilize such as WiFi, WLAN skill
The status information that art is communicated.When realizing, judgement part 522 may determine that all of the current progress of the mobile terminal
The communications condition information of communication type, and exclude cell switching not from the current communication status information in subsequent use
The condition information of the communication service influenced whether；Judgement part 522 can also only judge the communication that cell switching is influenced whether
The current communication status information of business.
First judging unit 530 is based on the movement state information and the current communication status information judges whether needs
Cell switching is carried out in advance, generates the first judged result.If the movement state information of the mobile terminal indicates mobile terminal
Advanced to new cell and the current communication status information of mobile terminal indicates that the mobile terminal is small currently without carrying out
The communication service that area's switching can influence, then the first judging unit 530 judgement needs to carry out cell switching in advance.That is, logical
Cross in cell switching without that can be communicated by cell switching application, mobile terminal is led to so as to reduce cell handover operations
The influence of letter, and improve the usage experience of user.If the movement state information of the mobile terminal indicates that mobile terminal does not have
Moved to new cell, or the current communication status information of mobile terminal indicates that the mobile terminal is currently carrying out cell and cut
The communication service that can be influenceed is changed, then judges that cell switching need not be carried out in advance in the first judging unit 530.
As an example, first judging unit 530 can be by operating based on movement state information and present communications as follows
Condition information judges whether to need to carry out cell switching in advance：Judge the performance parameter of the mobile terminal whether close to described pre-
If handoff threshold value；When the performance parameter of the mobile terminal is close to the default handoff threshold value, worked as based on described
Preceding communication conditions judge whether the mobile terminal currently transmits data；Described in being judged based on the current communication status
When mobile terminal is currently without transmission data, judgement needs to carry out cell switching in advance；Sentence based on the current communication status
When the mobile terminal that breaks currently transmits data, judge not carry out cell switching in advance.That is, the first judging unit
530 after the movement state information based on mobile terminal determines that mobile terminal is advanced to new cell（It is i.e. preliminary to judge to want
Carry out cell switching）, judge whether to perform cell switching using traditional handoff threshold value, to ensure that carrying out cell exactly cuts
Change.When the performance parameter of the mobile terminal is close to the default handoff threshold value, it is meant that close on progress cell switching
Switching point, cell switching will occur.It is described to set close to the lead that be switched according to cell, such as when wishing to carry
, can be by the performance parameter of the mobile terminal and the default handoff threshold value during the preceding cell switching of progress for a long time
A larger difference is differed to be judged as approaching；When it is desirable that carrying out cell switching to the short period in advance, can will it is described it is mobile eventually
The performance parameter at end differs a smaller difference with the default handoff threshold value and is judged as approaching.
First judging unit 530 can be judged based on the current communication status of all communication services of mobile terminal
Whether the mobile terminal currently transmits data, can also be according to the communication service related to cell switching of mobile terminal
Current communication status judge whether the mobile terminal currently transmits data.Data are being carried out in mobile terminal to lead to
Believe or carry out certain types of data communication（For example, the data communication carried out using GPRS technologies）In the case of, first
Judging unit 530 judges not carry out cell switching in advance.Generally, the portfolio transmitted in voice communication is smaller, by
The influence of cell switching is also relatively small, even if so mobile terminal carries out voice communication, the first judging unit 530 can also
Judge not carry out cell switching in advance.That is, the first judging unit 530 can eliminate voice from current communication status
Communication, only when entering row data communication, judges not carry out cell switching in advance.In practice, can also be in mobile terminal
Carry out under any signal intelligence, the first judging unit 530 all judges not carry out cell switching in advance.
Indicate that the switch unit 510 is moved described when needing to carry out cell switching in advance in first judged result
Dynamic terminal is switched to new cell from current area.Switch unit 510 determines the new cell to be switched to first, is then moved described
Dynamic terminal is switched to new cell from current area.There is global positioning system apparatus, the profit of the acquiring unit 520 in mobile terminal
In the case of movement locus and current location that the mobile terminal is obtained with the global positioning system apparatus, the switching is single
Member 510 may include：Part 511 is determined, the current location for being obtained based on the acquiring unit 520 determines the mobile terminal
Each neighbor cell；Alternative pack 512, for the movement locus that is obtained based on the acquiring unit from each neighbor cell
Select the new cell that the mobile terminal to be switched to；With switching part 513, for mobile terminal to be switched to from current area
The new cell.The switch unit 510 is it is determined that during new cell, can be combined with traditional means, to ensure that cell switches
Excellent communication performance afterwards.For example, the alternative pack 512 can be by operating the selection mobile terminal to be switched to as follows
New cell：One preferable cell is selected from each neighbor cell based on the movement locus；Obtain the property of the preferable cell
Can parameter；When the performance parameter of the preferable cell meets predetermined condition, the preferable cell is regard as the new cell.
Alternatively, it can also include in the switching device 500 shown in Fig. 5：3rd judging unit 540（Such as dotted line in Fig. 5
Shown in frame）, for when the mobile terminal is covered by least two cells, judging whether at least two cell belongs to
Identical communication system, and generate the 3rd judged result.When the 3rd judged result indicates that at least two cell is not belonging to phase
With communication system when, first judging unit 530 is based on movement state information and current communication status information and judged whether
Need to carry out cell switching in advance.When mobile terminal is switched between the cell for being not belonging to same communication system, it is necessary to
Perform more instruction transmission and receive operation, communicated during more should be avoided in cell switching.Therefore, judge first
Unit 530 is based on before movement state information and current communication status information judges whether to need to carry out cell switching in advance, can
Whether identical communication system is belonged to current area and neighbor cell that mobile terminal is judged using the 3rd judging unit 540
System.
In the technical scheme of switching device 500 according to embodiments of the present invention, pass through the motion shape based on mobile terminal
State information and current communication status information carry out cell switching in advance, can reduce communication of the cell handover operations to mobile terminal
Influence, so as to improve the usage experience of user.
Above-mentioned switching device 500 can be applied to various mobile terminals, correspondingly include the movement of the switching device 500
Terminal is also in the open scope of the embodiment of the present invention.In addition, if it is desired, the mobile terminal can also include other single
Member or device, such as antenna assembly, global positioning system.
It should be noted that the division of the unit in Fig. 5 is only schematic, other dividing modes can be taken in practice.
In addition, it is apparent to those skilled in the art that, for convenience and simplicity of description, the equipment of foregoing description, list
Member, the specific work process of part, may be referred to the corresponding process in preceding method embodiment, will not be repeated here.
Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein
Member and algorithm steps, can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually
Performed with hardware or software mode, depending on the application-specific and design constraint of technical scheme.Professional and technical personnel
Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed
The scope of the present invention.
In embodiment provided herein, it should be understood that disclosed systems, devices and methods, it can pass through
Other modes are realized.For example, device embodiment described above is only schematical, for example, the division of the unit,
It is only a kind of division of logic function, there can be other dividing mode when actually realizing, such as multiple units or component can be with
With reference to or be desirably integrated into another system, or some features can be ignored, or not perform.In addition, in each reality of the invention
Apply that each functional unit in example can be integrated in a processing unit or unit is individually physically present, also may be used
It is integrated in a unit with two or more units.
If the function is realized using in the form of SFU software functional unit and is used as independent production marketing or in use, can be with
It is stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially in other words
The part contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, including some instructions are to cause each implementation of the computing device present invention
The all or part of step of example methods described.And foregoing storage medium includes：It is USB flash disk, mobile hard disk, read-only storage, random
Access memory, magnetic disc or CD etc. are various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.
Claims (15)
1. a kind of method for carrying out cell switching in a communications system for mobile terminal, the mobile terminal can be in its inspection
The performance parameter of the signal measured carries out cell switching when reaching default handoff threshold, and methods described is included in the signal
Performance parameter reaches the following steps performed before the default handoff threshold value：
Obtain the movement state information of the mobile terminal；
Obtain the current communication status information of the mobile terminal；
Judge whether to need to carry out cell switching in advance based on the movement state information and the current communication status information, it is raw
Into the first judged result；
First judged result indicate need to carry out cell switching in advance when, by the mobile terminal from current area switch
To new cell.
2. method according to claim 1, wherein,
The movement state information for obtaining the mobile terminal includes recording the mobile terminal in a past period
Movement locus as the motion related information,
The current communication status information for obtaining the mobile terminal includes judging whether the mobile terminal currently passes
Transmission of data, generates the second judged result, and regard second judged result as the current communication status.
3. method according to claim 2, wherein, it is described to be based on the movement state information and the current communication status information
Judging whether to need to carry out cell switching in advance includes：
Judge the performance parameter of the mobile terminal whether close to the default handoff threshold value；
When the performance parameter of the mobile terminal is close to the default handoff threshold value, sentenced based on the current communication status
Whether the mobile terminal that breaks currently transmits data；
When judging the mobile terminal currently without transmission data based on the current communication status, judgement needs to carry out in advance
Cell switches.
4. method according to claim 3, wherein, it is described to be based on the movement state information and the current communication status information
Judging whether to need to carry out cell switching in advance also includes：
When judging that the mobile terminal currently transmits data based on the current communication status, judgement does not carry out small in advance
Area switches.
5. method according to claim 1, wherein, the mobile terminal has global positioning system apparatus, described to be moved described
Dynamic terminal is switched to new cell from current area to be included：
Movement locus and the current location of the mobile terminal are obtained using the global positioning system apparatus；
Each neighbor cell of the mobile terminal is determined based on the current location；
The new cell that the mobile terminal to be switched to is selected from each neighbor cell based on the movement locus；With
Mobile terminal is switched to the new cell from current area.
6. method according to claim 5, wherein, the number of the neighbor cell is at least two, described to be based on the motion
Track selects the mobile terminal new cell to be switched to include from each neighbor cell：
One preferable cell is selected from each neighbor cell based on the movement locus；
Detect the performance parameter of the preferable cell；
When the performance parameter of the preferable cell meets predetermined condition, the preferable cell is regard as the new cell.
7. method according to claim 1, in addition to：
When the mobile terminal is covered by least two cells, judge whether at least two cell belongs to identical and lead to
Letter system, and generate the 3rd judged result；
When the 3rd judged result indicates that at least two cell is not belonging to identical communication system, perform described based on motion
Status information and current communication status information judge whether to need to carry out cell switching in advance.
8. a kind of switching device for carrying out cell switching in a communications system for mobile terminal, including：
Switch unit, the performance parameter for the signal that can be detected in mobile terminal carries out cell when reaching default handoff threshold
Switching；
Acquiring unit, before the performance parameter of the signal reaches the default handoff threshold value, obtains described mobile whole
The movement state information at end, and obtain the current communication status information of the mobile terminal；
First judging unit, for judging whether that needs are carried based on the movement state information and the current communication status information
Preceding progress cell switching, generates the first judged result,
Wherein, the switch unit first judged result indicate need to carry out cell switching in advance when, by the movement
Terminal is switched to new cell from current area.
9. switching device according to claim 8, wherein, the acquiring unit includes：
Recording-member is related as the motion for recording movement locus of the mobile terminal in a past period
Information,
Judgement part, for judging whether the mobile terminal currently transmits data, generates the second judged result, and should
Second judged result is used as the current communication status.
10. switching device according to claim 9, wherein, first judging unit by operating based on motion state as follows
Information and current communication status information judge whether to need to carry out cell switching in advance：
Judge the performance parameter of the mobile terminal whether close to the default handoff threshold value；
When the performance parameter of the mobile terminal is close to the default handoff threshold value, sentenced based on the current communication status
Whether the mobile terminal that breaks currently transmits data；
When judging the mobile terminal currently without transmission data based on the current communication status, judgement needs to carry out in advance
Cell switches.
11. switching device according to claim 10, wherein, first judging unit is sentenced based on the current communication status
When the mobile terminal that breaks currently transmits data, judge not carry out cell switching in advance.
12. switching device according to claim 8, wherein, the mobile terminal has global positioning system apparatus, the acquisition
Unit obtains movement locus and the current location of the mobile terminal, the switch unit using the global positioning system apparatus
Including：
Determine part, the current location for being obtained based on the acquiring unit determine the mobile terminal each is adjacent small
Area；
Alternative pack, the movement locus for being obtained based on the acquiring unit selects described mobile whole from each neighbor cell
Hold the new cell to be switched to；With
Switching part, for mobile terminal to be switched into the new cell from current area.
13. switching device according to claim 12, wherein, the number of the neighbor cell is at least two, the selector
Part by operating the selection mobile terminal new cell to be switched to as follows：
One preferable cell is selected from each neighbor cell based on the movement locus；
Obtain the performance parameter of the preferable cell；
When the performance parameter of the preferable cell meets predetermined condition, the preferable cell is regard as the new cell.
14. switching device according to claim 8, in addition to：
3rd judging unit, for when the mobile terminal is covered by least two cells, judging that described at least two is small
Whether area belongs to identical communication system, and generates the 3rd judged result；
When the 3rd judged result indicates that at least two cell is not belonging to identical communication system, first judging unit
Judge whether to need to carry out cell switching in advance based on movement state information and current communication status information.
15. a kind of mobile terminal, including the switching device as any one of claim 8-14.
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| CN201410098950.2A CN103874145B (en) | 2014-03-17 | 2014-03-17 | Carry out method, switching device and the mobile terminal of cell switching |
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| CN105407512B (en) * | 2015-10-23 | 2018-07-13 | 广东欧珀移动通信有限公司 | A kind of method for switching network of mobile terminal, device and mobile terminal |
| CN106572511A (en) * | 2016-11-15 | 2017-04-19 | 中国联合网络通信集团有限公司 | Cell switching or reselection method in heterogeneous network and apparatus thereof |
| CN110740482B (en) * | 2018-07-20 | 2021-09-03 | 比亚迪股份有限公司 | Area switching method and device, train access unit and train |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316400A (en) * | 2007-05-29 | 2008-12-03 | 大唐移动通信设备有限公司 | Method, system and device for community re-selection and switch |
| CN101616436A (en) * | 2009-07-08 | 2009-12-30 | 西安电子科技大学 | Based on the user selection switching method under the moving load equilibrating mechanism |
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2014
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101316400A (en) * | 2007-05-29 | 2008-12-03 | 大唐移动通信设备有限公司 | Method, system and device for community re-selection and switch |
| CN101616436A (en) * | 2009-07-08 | 2009-12-30 | 西安电子科技大学 | Based on the user selection switching method under the moving load equilibrating mechanism |
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