CN105208609B - Residence reselecting and device - Google Patents
Residence reselecting and device Download PDFInfo
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- CN105208609B CN105208609B CN201410301273.XA CN201410301273A CN105208609B CN 105208609 B CN105208609 B CN 105208609B CN 201410301273 A CN201410301273 A CN 201410301273A CN 105208609 B CN105208609 B CN 105208609B
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- mobile terminal
- cell
- cell reselection
- neighboring community
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
A kind of method and device of cell reselection, which comprises when mobile terminal initiates cell re-selection request, if the mobile terminal is in table tennis environment, increase the gravity treatment biasing that the mobile terminal requests the neighboring community of access；Gravity treatment biasing after being increased based on the neighboring community, executes the cell re-selection request of the mobile terminal.This method can be when the mobile terminal be in table tennis environment, and sluggish cell reselection behavior effectively reduces paging information losing probability, reduces system power dissipation, provides good user experience.
Description
Technical field
The present invention relates to field of communication technology more particularly to a kind of residence reselectings and device.
Background technique
Mobile communication technology develops the mobile communications network for foring multiple types, such as second generation mobile communication system (2G)
In global communication mobile system (GSM, Global System for Mobile Communication), the third generation it is mobile logical
Wideband code division multiple access (WCDMA, Wideband Code Division Multiple Access) in letter system (3G), the 4th
Long-term artistic skills (LTE, Long Term Evolution) in Generation Mobile Communication System etc..
Currently, the third generation, forth generation mobile communcations system are with its more efficient spectrum efficiency, higher service quality and guarantor
Close property and higher service rate are obtaining the concern and use of more and more users.But second generation mobile communcations system
The wide network coverage, communication effect stablize, also have certain advantage.
User can select suitable network communicating system according to the demand of itself in actually using.It is used in user
During, in order to guarantee good business, top-quality cell can be selected to be resident.In the standby state, mobile whole
End can periodically measure the signal quality of adjacent cell, when the quality of a certain adjacent cell is better than current serving cell
When, mobile terminal will initiate cell reselection.Cell reselection can be the cell reselection of identical mobile communications network, can also be with
The cell reselection of across a network.
In mobile communication system, if existing simultaneously the signal of multiple and different base stations in certain area, and each cell
Signal quality relatively, will lead to the mobile terminal and carry out ping-pong reselection between serving cell and neighboring community.
Ping-pong reselection can not only waste a large amount of interface-free resources and Internet resources, but also will increase terminal power consumption and
Increase the probability of user's off-grid, reduces user experience.
Summary of the invention
When problems solved by the invention is that the signal quality in serving cell and neighboring community is close, it is easy to cause the shifting
The problem of dynamic terminal carries out ping-pong reselection between the serving cell and neighboring community.
To solve the above problems, technical solution of the present invention provides a kind of method of cell reselection, comprising:
When mobile terminal initiates cell re-selection request, if the mobile terminal is in table tennis environment, described in increase
Mobile terminal requests the gravity treatment biasing of the neighboring community of access；
Gravity treatment biasing after being increased based on the neighboring community, executes the cell re-selection request of the mobile terminal.
Optionally, judge whether the mobile terminal is in table tennis environment as follows:
If the network signal quality difference of serving cell locating for the mobile terminal and neighboring community is less than quality threshold,
And the mobile terminal is in static or low-speed motion state, and contains the service in cell reselection track data record
The gravity treatment of cell and the neighboring community records, it is determined that the mobile terminal is in table tennis environment.
Optionally, it is the position letter based on the mobile terminal that the mobile terminal, which is in static or low-speed motion state,
What the variable quantity of breath determined.
Optionally, further includes: when cell reselection occurs for the mobile terminal, cell reselection information is recorded described small
In area's gravity treatment track data record.
Optionally, the cell reselection information includes the mark of the selected neighboring community of the cell reselection and described small
The temporal information that area's gravity treatment occurs.
Optionally, the neighboring community gravity treatment biasing incrementss be based on cell reselection occur the case where ping-pong reselection into
The corresponding adjustment of row.
Optionally, the gravity treatment biasing after the increase based on the neighboring community, executes the cell weight of the mobile terminal
Choosing is requested
Optionally, after the neighboring community increases gravity treatment biasing, if the network signal quality of the neighboring community is more than
The network signal quality of serving cell locating for mobile terminal makes the mobile terminal access the neighboring community.
In order to solve the above technical problems, technical solution of the present invention also provides a kind of device of cell reselection, described device packet
It includes:
Bias unit is used for when mobile terminal initiates cell re-selection request, if the mobile terminal is in table tennis environment
In, then increase the gravity treatment biasing that the mobile terminal requests the neighboring community of access；
Gravity treatment unit executes the cell of the mobile terminal for the gravity treatment biasing after increasing based on the neighboring community
Reselection request.
Compared with prior art, technical solution of the present invention has the advantage that
When mobile terminal initiates cell re-selection request, if the mobile terminal is in table tennis environment, described in increase
Mobile terminal requests the gravity treatment biasing of the neighboring community of access；Gravity treatment biasing after being increased based on the neighboring community, is executed
The cell re-selection request of the mobile terminal.This method can be when the mobile terminal be in table tennis environment, sluggish cell
Gravity treatment behavior effectively reduces paging information losing probability, reduces system power dissipation, provides good user experience.
Detailed description of the invention
Fig. 1 is the flow diagram of the method for the cell reselection that technical solution of the present invention provides；
Fig. 2 is the flow diagram of the method for cell reselection provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of the device of cell reselection provided in an embodiment of the present invention.
Specific embodiment
In the prior art, if existing simultaneously the signal of multiple and different base stations in certain area, and the signal of each cell
Quality relatively, will lead to the mobile terminal and carry out ping-pong reselection between serving cell and neighboring community.
To solve the above problems, technical solution of the present invention provides a kind of method of cell reselection, as shown in Figure 1, holding first
Row step S1, when mobile terminal initiates cell re-selection request, if the mobile terminal is in table tennis environment, described in increase
Mobile terminal requests the gravity treatment biasing of the neighboring community of access.
The mobile terminal be in table tennis environment refer to existed simultaneously at position where the mobile terminal locates it is multiple and different
The signal of base station, and the signal quality of the current serving cell and neighboring community of the mobile terminal is relatively, the movement
Terminal be in network signal covering it is relatively average in the case where, in such circumstances, the mobile terminal is easy to happen ping-pong reselection.
The serving cell refers to the cell that mobile terminal is currently resident, i.e., provides service for the mobile terminal
Cell, the neighboring community be the serving cell near cell.
Due to the mobile terminal in the standby state, the signal quality that mobile terminal can periodically to neighboring community
It measures, when the quality of a certain neighboring community is better than current serving cell, mobile terminal will initiate cell reselection, and
When the serving cell of the mobile terminal and the signal quality of the neighboring community on periphery relatively when, it is easy to lead to the shifting
Cell reselection ceaselessly occurs between current service cell and neighboring community for dynamic terminal, i.e., can be easy to generate ping-pong.
And when the mobile terminal is stationary or movement speed is slow, if current service cell and phase
Signal quality between adjacent cell relatively when, it should reside in current service cell, to avoid occur cell reselection
When the paging information that may cause the case where losing.The mobile terminal is in the behavior that cell reselection ceaselessly occurs, meeting
The system power dissipation for increasing the mobile terminal increases the power consumption of the mobile terminal.
So in this step, when mobile terminal initiates cell re-selection request, if the mobile terminal is in table tennis ring
In border, then increase gravity treatment biasing (CRO, CELL_RESELECT_ that the mobile terminal requests the neighboring community of access
OFFSET), the behavior of the cell reselection of the sluggish mobile terminal is realized with this.
Step S2 is executed, the gravity treatment biasing after increasing based on the neighboring community executes the cell weight of the mobile terminal
Choosing request.
After increasing the mobile terminal and requesting the gravity treatment biasing of neighboring community of access, the signal of the neighboring community
Quality is underestimated, and the probability that the mobile terminal accesses the neighboring community is reduced, if but in the weight for increasing the neighboring community
After choosing biasing, the signal quality of the neighboring community is still higher than the signal quality of serving cell where the mobile terminal locates,
It can be said that the signal for being higher than mobile terminal place serving cell that the signal quality of the bright neighboring community is more stable
Quality, it should be allowed the cell reselection behavior of the mobile terminal.
This method can be when the mobile terminal be in table tennis environment, and sluggish cell reselection behavior is effectively reduced and sought
Information losing probability is exhaled, system power dissipation is reduced, good user experience is provided.
To make the above purposes, features and advantages of the invention more obvious and understandable, with reference to the accompanying drawing to the present invention
Specific embodiment be described in detail.
Fig. 2 is the flow diagram of the method for cell reselection provided in an embodiment of the present invention.As shown in Fig. 2, being first carried out
Step S201, to where mobile terminal serving cell and neighboring community measure.
In the present embodiment, the signal quality of serving cell where the mobile terminal locates and neighboring community can be carried out
Measurement.For example, can signal measurements, amount of hysteresis to the Primary Common Pilot Channel of the serving cell and the neighboring community
It is measured with amount of bias etc., and then determines the serving cell and described adjacent according to signal measurements of the channel etc.
The signal quality of cell.
The signal measurements may include: the signal strength (RSCP) of the Primary Common Pilot Channel of serving cell and adjacent area
Measured value, received signal strength indicator (RSSI), signal-to-noise ratio and change in signal strength rate etc..
Step S202 is executed, starting cell reselection is assessed.
It, can be by the measured value according to the signal measurements of the measured serving cell and each neighboring community
Analysis, the operation such as compare, and determine the power of the signal quality of the serving cell and neighboring community.
Strong and weak comparison and analysis for the signal quality of the serving cell and each neighboring community, those skilled in the art
Member can be determined accordingly using a variety of methods, be not specifically limited herein.
According to the power of the serving cell and the signal quality of the neighboring community, it can determine that the mobile terminal is
It is no to need to initiate cell re-selection request.
Step S203 is executed, judges whether the mobile terminal initiates the request of cell reselection.
After being resident current serving cell in the mobile terminal, when the mobile terminal is in standby mode, meeting
Periodically the signal quality of neighboring community is measured, when the signal quality that measurement obtains neighboring community is better than when Forward
When the signal quality of the serving cell where dynamic terminal, the mobile terminal can initiate the request of cell reselection.
If the judging result of step S203 be it is yes, then follow the steps S204；Otherwise S201 is returned to step, is continued to institute
It states serving cell and neighboring community measures.
Step S204 assesses the signal coverage condition of the mobile terminal region.
Due to mobile terminal be in network signal covering it is relatively average in the case where, the serving cell of the mobile terminal
Relatively with the signal quality of the neighboring community on periphery, can be easy to generate ping-pong, thus need it is right in this step
The signal coverage condition of the mobile terminal region is assessed, can be according to the institute detected in step s 201
The signal quality of the serving cell of mobile terminal and the signal quality of each neighboring community are stated, is determined locating for the mobile terminal
Environment whether be network signal covering it is average.Specifically, environment locating for the mobile terminal assessed
In the process, one can be preset to be used to describe the other threshold value of poor signal quality, the service locating for the mobile terminal is small
When the network signal quality difference of area and neighboring community is less than quality threshold, it can determine that the movement is in network signal covering
In average environment.
In the serving cell of the mobile terminal and the larger signal quality difference of neighboring community, ping-pong reselection occurs
The probability of situation can be smaller, so can permit the request of cell reselection transmitted by the mobile terminal at this time.And if
The mobile terminal be in network signal covering it is relatively average in the case where, step S205 and subsequent step are needed to be implemented, to keep away
Exempt from that ping-pong reselection occurs.
Step S205 assesses the motion state of the mobile terminal.
In the present embodiment, determine the mobile terminal be in network signal covering it is relatively average in the case where, in institute
After stating the request instruction that mobile terminal initiates cell reselection, the motion state of the mobile terminal can be assessed.
During the mobile terminal fast moves, the position that thus may cause the mobile terminal can occur
Biggish change, if the location information of the mobile terminal biggish change has occurred, the mobile terminal should be allowed
The request of transmitted cell reselection.
And during mobile terminal is in opposing stationary or slowly carries out mobile, due to the position of the mobile terminal
Biggish change can't be occurred by setting, it may be said that and too big variation can't occur for communication environment locating for the mobile terminal,
At this time in order to avoid generation ping-pong, it should be carried out to the request of cell reselection transmitted by the mobile terminal further
Judgement.
Whether the mobile terminal is in state that is opposing stationary or slowly moving, can be according to the mobile terminal
Location information is judged that the variation of the location information of the mobile terminal whithin a period of time can combine existing skill accordingly
The location technology of a variety of pairs of mobile terminals in art determined accordingly, such as based on global positioning system (GPS, Global
Positioning System) location technology, be based on assisted global positioning system (AGPS, Assisted Global
Positioning System) location technology etc., according to the variation of the location information of the mobile terminal, it can to described
The state of mobile terminal is determined accordingly.
During mobile terminal is in opposing stationary or slowly carries out mobile, in order to avoid ping-pong occurs,
Step S206 is needed to be implemented,
Step S206 inquires cell reselection track database.
When every time cell reselection occurs for mobile terminal, can time to the cell reselection that it is occurred and
When cell reselection occurs, the id information etc. of the neighboring community of serving cell and access which is resident is recorded,
For example, the relevant information that cell reselection occurs can be recorded in cell reselection track database.Then in the mobile terminal
Again occur cell reselection when, can be inquired in the cell reselection track database whether have with it is currently requested
The similar record of cell reselection.
After step S206, step S207 is executed, judges whether the mobile terminal is in fluctuation environment.
If being inquired requested with presently described mobile terminal containing a plurality of in the cell reselection track database
The operation note of the similar cell reselection of cell reselection operation can then determine that current cell reselection may be that ping-pong reselection is small
A possibility that area, can be bigger.
In the specific implementation, certain quantity threshold can be set, if containing in the cell reselection track database
Gravity treatment more than quantity threshold records, then can determine that the mobile terminal is in fluctuation environment, i.e., the secondary cell reselection may
For ping-pong reselection, should not be allowed to that the behavior of cell reselection occurs at once.The setting of the quantity threshold can be according to reality
Disposition is set accordingly.
After whether the mobile terminal initiates the request of cell reselection, it can be determined by step S204 to step S207
Whether the mobile terminal currently in table tennis environment, i.e., fluctuates in environment, in the judgement knot of step S207 as described above
Fruit is to execute step S208 when being, no to then follow the steps S210.
Step S208 increases the gravity treatment biasing that the mobile terminal requests the neighboring community of access.
Cell reselection biasing can be artificially for being adjusted, to improve or reduce institute for describing cell reselection parameters
It states cell reselection described in the chance that the corresponding cell of gravity treatment biasing is selected and is biased to a magnitude, it is indicated to cell reselection
The artificial correction value of parameter.Cell reselection biasing indicates that unit dB, value range is 0~63 with decimal number, expression 0~
126dB (using 2dB as step-length).Default value is 0.
When determining that the mobile terminal is in fluctuation environment, after the mobile terminal initiates cell re-selection request,
By increasing the gravity treatment amount of bias of neighboring community, avoid that described there is a situation where ping-pong reselections.
The incrementss of the gravity treatment biasing of the neighboring community are based on cell reselection and the progress of the case where ping-pong reselection occur accordingly
Adjustment, for example, if the probability for ping-pong reselection occur is still bigger, then can continue after increasing a certain amount of gravity treatment biasing
Increase the gravity treatment amount of bias.
Step S209 is executed, judges whether that there is still a need for execute cell reselection.
If the mobile terminal is still sent out after enhancing the mobile terminal and requesting the gravity treatment biasing of neighboring community of access
The request for sending cell reselection illustrates the network signal quality of the neighboring community still above serving cell locating for mobile terminal
Network signal quality should allow to start reselection operation at this time；If the mobile terminal shows without carrying out cell reselection at this time
It is better choice that the mobile terminal, which resides in current serving cell, then can return to step S201, is continued to institute
It states serving cell and neighboring community measures.
I.e. when the judging result of step S209 is, step S210 is executed；Otherwise S201 is returned to step.
Step S210 allows the mobile terminal starting reselection operation.
The mobile terminal execution reselection operation, carries out cell switching, and the mobile terminal requests the adjacent small of access
Area becomes the new serving cell of the mobile terminal.
The method of cell reselection provided by the present embodiment, when the mobile terminal initiates cell re-selection request, first
According to the measurement result of serving cell and neighboring community under standby mode, the signal of environment covers where detecting the mobile terminal
Lid situation, and then can judge whether the mobile terminal is in static or low speed according to the location information of the mobile terminal
The state of movement, and then according to signal coverage condition, the motion state of the mobile terminal and the gravity treatment track database
The middle gravity treatment track data etc. recorded of accumulating judges whether current environment is table tennis environment, is in table tennis in the mobile terminal
When in environment, the behavior of sluggish cell reselection can effectively reduce the probability of the loss of paging information, reduce the mobile terminal
System power dissipation, the Experience Degree of good mobile terminal is provided.
The method of corresponding above-mentioned cell reselection, the embodiment of the present invention also provide a kind of device of cell reselection.Fig. 3 is this hair
The structural schematic diagram of the device for the cell reselection that bright embodiment provides.Described device includes bias unit U11 and gravity treatment unit
U12。
The bias unit U11 is used for when mobile terminal initiates cell re-selection request, if the mobile terminal is in table tennis
In pang environment, then increase the gravity treatment biasing that the mobile terminal requests the neighboring community of access.
The gravity treatment unit U12 executes the mobile terminal for the gravity treatment biasing after increasing based on the neighboring community
Cell re-selection request.
Described device further includes table tennis environment determination unit U13, for the serving cell locating for the mobile terminal and
The network signal quality difference of neighboring community is less than quality threshold, and the mobile terminal is in static or low-speed motion shape
State, and the gravity treatment record in cell reselection track data record containing the serving cell and the neighboring community, determine institute
Mobile terminal is stated to be in table tennis environment.
Described device further includes recording unit U14, is used for when cell reselection occurs for the mobile terminal, by cell reselection
Information is recorded in the cell reselection track data record.The cell reselection information includes that the cell reselection is selected
The temporal information that the mark of neighboring community and the cell reselection occur.
Described device further includes adjustment unit U15, for there is the case where ping-pong reselection to the phase based on cell reselection
The incrementss of the gravity treatment biasing of adjacent cell are adjusted correspondingly.
Although present disclosure is as above, present invention is not limited to this.Anyone skilled in the art are not departing from this
It in the spirit and scope of invention, can make various changes or modifications, therefore protection scope of the present invention should be with claim institute
Subject to the range of restriction.
Claims (10)
1. a kind of method of cell reselection characterized by comprising
When mobile terminal initiates cell re-selection request, judge whether the mobile terminal is in table tennis environment, comprising: if institute
The network signal quality difference for stating serving cell locating for mobile terminal and neighboring community is less than quality threshold, and described mobile whole
End is in static or low-speed motion state, and contains the serving cell and the phase in cell reselection track data record
The gravity treatment of adjacent cell records, it is determined that the mobile terminal is in table tennis environment；
If the mobile terminal is in table tennis environment, increase the gravity treatment that the mobile terminal requests the neighboring community of access
Biasing；
Gravity treatment biasing after being increased based on the neighboring community, executes the cell re-selection request of the mobile terminal.
2. the method for cell reselection as described in claim 1, which is characterized in that the mobile terminal is in static or low speed
Motion state is the variable quantity determination based on the location information of the mobile terminal.
3. the method for cell reselection as described in claim 1, which is characterized in that further include: occur in the mobile terminal small
When area's gravity treatment, cell reselection information is recorded in the cell reselection track data record.
4. the method for cell reselection as claimed in claim 3, which is characterized in that the cell reselection information includes the cell
The temporal information that the mark of the selected neighboring community of gravity treatment and the cell reselection occur.
5. the method for cell reselection as described in claim 1, which is characterized in that the increase of the gravity treatment biasing of the neighboring community
There is the case where ping-pong reselection based on cell reselection and is adjusted correspondingly in amount.
6. the method for cell reselection as described in claim 1, which is characterized in that after the increase based on the neighboring community
Gravity treatment biasing, the cell re-selection request for executing the mobile terminal include:
After the neighboring community increases gravity treatment biasing, if the network signal quality of the neighboring community is more than locating for mobile terminal
Serving cell network signal quality, so that the mobile terminal is accessed the neighboring community.
7. a kind of device of cell reselection characterized by comprising
Table tennis environment determination unit is used for when mobile terminal initiates cell re-selection request, if clothes locating for the mobile terminal
Cell of being engaged in and the network signal quality difference of neighboring community are less than quality threshold, and the mobile terminal is in static or low speed
Motion state, and the gravity treatment record in cell reselection track data record containing the serving cell and the neighboring community,
Determine that the mobile terminal is in table tennis environment；
Bias unit, for when the mobile terminal is in table tennis environment, then increasing the mobile terminal and requesting to access
Neighboring community gravity treatment biasing；
Gravity treatment unit executes the cell reselection of the mobile terminal for the gravity treatment biasing after increasing based on the neighboring community
Request.
8. the device of cell reselection as claimed in claim 7, which is characterized in that further include: recording unit, in the shifting
When cell reselection occurs for dynamic terminal, cell reselection information is recorded in the cell reselection track data record.
9. the device of cell reselection as claimed in claim 8, which is characterized in that the cell reselection information includes the cell
The temporal information that the mark of the selected neighboring community of gravity treatment and the cell reselection occur.
10. the device of cell reselection as claimed in claim 7, which is characterized in that further include: adjustment unit, for based on small
The incrementss that gravity treatment biasing of the case where ping-pong reselection to the neighboring community occurs in area's gravity treatment are adjusted correspondingly.
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| CN201410301273.XA CN105208609B (en) | 2014-06-27 | 2014-06-27 | Residence reselecting and device |
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| CN201410301273.XA CN105208609B (en) | 2014-06-27 | 2014-06-27 | Residence reselecting and device |
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| CN107124740B (en) * | 2016-02-24 | 2020-05-26 | 成都鼎桥通信技术有限公司 | Cell reselection method and device |
| CN105959918B (en) * | 2016-06-23 | 2020-04-24 | 哈尔滨海能达科技有限公司 | Data processing method and server |
| CN106162769B (en) * | 2016-08-17 | 2019-08-16 | 努比亚技术有限公司 | A kind of base station switch method and terminal |
| WO2018082040A1 (en) * | 2016-11-04 | 2018-05-11 | 富士通株式会社 | Beam reselection device, cell reselection device and measurement triggering device |
| CN108093453B (en) * | 2016-11-21 | 2020-03-03 | 北京小米移动软件有限公司 | Cell reselection method and device |
| CN113286333B (en) * | 2020-02-19 | 2022-08-19 | 华为技术有限公司 | Network selection method and device |
| WO2021253279A1 (en) * | 2020-06-17 | 2021-12-23 | Qualcomm Incorporated | Preventing frequent 5g new radio (nr) cell handovers in a non-standalone (nsa) mode when user equipment (ue) is stationary |
| US20230422130A1 (en) * | 2021-01-05 | 2023-12-28 | Qualcomm Incorporated | Detecting and preventing ping-pong events |
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