CN110049524A - Mobile terminal and its method for falling cell after rise - Google Patents
Mobile terminal and its method for falling cell after rise Download PDFInfo
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- CN110049524A CN110049524A CN201910386242.1A CN201910386242A CN110049524A CN 110049524 A CN110049524 A CN 110049524A CN 201910386242 A CN201910386242 A CN 201910386242A CN 110049524 A CN110049524 A CN 110049524A
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- mobile terminal
- rise
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- mme
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
- H04W36/0085—Hand-off measurements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
The present invention provides a kind of mobile terminal and its falls the method for cell after rise.This method comprises: mobile terminal receives the paging request that MME is sent, its location information and TAI information at this time is saved, sends request of activating business to MME；Mobile terminal saves its this time falling subdistrict frequency point information after end of conversation；When mobile terminal receives the paging request of MME transmission again, judging it, whether the TAI information of persistent district and the TAI information of last time are consistent at this time；If so, calculating whether the distance between the position of its this time and the position of last time are less than threshold value；If so, the falling subdistrict frequency point information that mobile terminal was saved according to last time is fallen after rise.The time that this method substantially reduces mobile terminal progress cell falling improves user experience to substantially reduce the entire call set-up time of mobile terminal.
Description
Technical field
The invention belongs to fields of communication technology, and in particular to a kind of mobile terminal and its method for falling cell after rise.
Background technique
Currently, when mobile terminal has incoming call, MSC issues paging request to MME in CSFB calling implementation process,
MME issues paging request to mobile terminal, and mobile terminal receives the paging request of MME transmission, and mobile terminal is issued to MME to be expanded
Service request is opened up, mobile terminal is by measuring falling cell, and the suitable falling by receiving eNB determination and sending back to
Cell falling is carried out after cell, to establish calling.This keeps the entire call set-up time of mobile terminal long, user's perception
It is bad.
Summary of the invention
The present invention is directed to the above problem in the prior art, provides a kind of mobile terminal and its falls the method for cell after rise.It should
Method substantially reduces the time that mobile terminal carries out cell falling, to substantially reduce the entire call setup of mobile terminal
Time improves user experience.
The present invention provides a kind of method of mobile terminal falling cell, comprising:
Step S10: mobile terminal receives the paging request that MME is sent, and saves its location information and TAI information at this time,
Request of activating business is sent to MME；
Step S11: mobile terminal saves its this time falling subdistrict frequency point information after end of conversation；
Step S12: when mobile terminal again receives the paging request of MME transmission, judge its persistent district at this time
Whether TAI information and the TAI information of last time are consistent；
If so, thening follow the steps S13: calculating whether the distance between the position of its this time and the position of last time are less than threshold
Value；If so, executing step S14: mobile terminal is fallen after rise according to the falling subdistrict frequency point information that last time saves.
Preferably, if the judging result of the step S12 and/or the step S13 be it is no, then follow the steps S15: protecting
Mobile terminal location information at this time and TAI information are deposited, is activated business request to MME transmission；Then it executes
Step S20:MME sends mobile terminal to eNB and falls cell instruction after rise；
The falling cell information of configuration is sent to mobile terminal by step S21:eNB；
Step S22: mobile terminal carries out falling cell signal measurement after rise, and measurement result is sent to eNB；
The optimal falling cell of signal is determined as most preferably falling cell after rise by step S23:eNB, and by it is described most preferably fall after rise it is small
Area is sent to mobile terminal；
Step S24: mobile terminal falls back to the best falling cell.
Preferably, mobile terminal is 4G multimode card, before the step S10 further include:
Step S09: mobile terminal carries out the joint attachment of 4G multimode card.
Preferably, the step S09 includes:
Mobile terminal 4G multimode card sends Attach Request message to MME；
MME sends SGs location update request message to corresponding VLR；The SGs location update request message includes moving
IMSI, MME information and location updating type of LAI, 4G multimode card of dynamic terminal；
VLR stores the MME information, and creates and be associated with the SGs of 4G multimode card under MME；
IMSI of the VLR according to LAI the and 4G multimode card, the 4G multimode card position more new technological process of initiation to HLR, and
Confirmation message is returned after the completion of updating to MME；
MME sends attachment and completes message to mobile terminal, completes the joint attachment of 4G multimode card.
Preferably, after mobile terminal falling cell further include:
Step S30: judge whether mobile terminal falls the cell LAI that cell LAI combines with 4G multimode card when adhering to after rise consistent；
If not, thening follow the steps S31: mobile terminal carries out location updating.
The present invention also provides a kind of mobile terminals, comprising:
Fall request module after rise, for receiving the paging request of MME transmission, save mobile terminal location information at this time and
TAI information sends request of activating business to MME；
Preserving module this time falls subdistrict frequency point information after rise for saving it after mobile terminal call；
First judgment module judges that it is stayed at this time when for receiving the paging request of MME transmission again when mobile terminal
Whether the TAI information of the TAI information and last time of staying cell is consistent；
Second judgment module is when being, to calculate this time of mobile terminal for the judging result in the first judgment module
Position and the distance between the position of last time whether be less than threshold value；
It falls module after rise, is when being, according to the preserving module last time for the judging result in second judgment module
The falling subdistrict frequency point information saved is fallen after rise.
Preferably, further includes:
It falls instruction sending module after rise, sends mobile terminal to eNB for MME and fall cell instruction after rise；
Fall configuration information receiving module after rise, the falling cell information of the configuration for receiving eNB transmission；
Signal measurement module falls cell signal measurement after rise for carrying out, and measurement result is sent to eNB；
Cell receiving module is fallen after rise, for receiving the best falling cell that eNB is determining and sends；The best falling
Cell is the optimal falling cell of signal；
It is described fall after rise module be also used to according to it is described it is best fall after rise cell frequency point information fall back to it is described most preferably fall after rise it is small
Area.
It preferably, further include joint attachable module, the joint for carrying out 4G multimode card is adhered to.
Preferably, further include third judgment module, for mobile terminal fall after rise cell after judge its fall after rise cell LAI with
Whether the cell LAI when joint attachment of 4G multimode card is consistent；
Location updating module, for the judging result in the third judgment module be it is no when, update the position of mobile terminal
It sets.
Beneficial effects of the present invention: the method that mobile terminal provided by the present invention falls cell after rise, it is mobile whole by saving
It holds location information when last time call, TAI information and falls subdistrict frequency point information after rise, and judge that mobile terminal is in call next time
It is no also last time converse when persistent district and mobile terminal position whether also last time call base station coverage area,
If can be realized when mobile terminal is conversed again also in last time call where persistent district within the scope of, and mobile terminal
Position also last time converse when base station range in, then mobile terminal directly fall back to its last time call when falling it is small
Area before any primary call requires that falling cell is measured and selected, then compared to existing mobile terminal
The case where suitable cell can just be fallen back to, substantially reduces the time that mobile terminal carries out cell falling, to substantially reduce
The entire call set-up time of mobile terminal, improves user experience.
Mobile terminal provided by the present invention falls request module, preserving module, first judgment module and the after rise by setting
Two judgment modules, if can be realized when mobile terminal is conversed again also in last time call where persistent district range
It is interior, and the position of mobile terminal in the base station range also when conversing last time, then mobile terminal directly falls back to its last time
Falling cell when call requires to survey falling cell compared to existing mobile terminal before any primary call
The case where measuring and selecting, then can just fall back to suitable cell substantially reduces the time that mobile terminal carries out cell falling, from
And the entire call set-up time of mobile terminal is substantially reduced, improve user experience.
Detailed description of the invention
Fig. 1 is the flow chart that mobile terminal falls minilocus approach after rise in the embodiment of the present invention 1；
Fig. 2 is the flow chart that mobile terminal falls minilocus approach after rise in the embodiment of the present invention 2；
Fig. 3 is the flow chart of mobile terminal 4G multimode card joint attachment in the embodiment of the present invention 2；
Fig. 4 is the functional block diagram of mobile terminal in the embodiment of the present invention 3.
Wherein appended drawing reference are as follows:
1, request module is fallen after rise；2, preserving module；3, first judgment module；4, the second judgment module；5, module is fallen after rise；6,
Fall instruction sending module after rise；7, configuration information receiving module is fallen after rise；8, signal measurement module；9, cell receiving module is fallen after rise；10,
Joint attachable module；11, third judgment module；12, location updating module.
Specific embodiment
Technical solution in order to enable those skilled in the art to better understand the present invention, with reference to the accompanying drawing and specific embodiment party
Formula is described in further detail the method for a kind of mobile terminal of the present invention and its falling cell.
Embodiment 1:
The present embodiment provides a kind of methods that mobile terminal falls cell after rise, as shown in Figure 1, comprising:
Step S10: mobile terminal receives the paging request that MME is sent, and saves its location information and TAI information at this time,
Request of activating business is sent to MME.
Step S11: mobile terminal saves its this time falling subdistrict frequency point information after end of conversation.
Step S12: when mobile terminal again receives the paging request of MME transmission, judge its persistent district at this time
Whether TAI information and the TAI information of last time are consistent.
If so, thening follow the steps S13: calculating whether the distance between the position of its this time and the position of last time are less than threshold
Value.If so, executing step S14: the falling subdistrict frequency point information that mobile terminal was saved according to last time is fallen after rise.
Wherein, threshold value is the signal cover of a base station.
By step S10- step S14, if can be realized when mobile terminal is conversed again also in call last time, institute when
Persistent district within the scope of, and the position of mobile terminal is in the base station range also when conversing last time, then mobile terminal
The falling cell when call of its last time is directly fallen back to, is required before any primary call compared to existing mobile terminal
To the case where cell is measured and selected, then can just fall back to suitable cell is fallen after rise, mobile terminal progress is substantially reduced
The time that cell is fallen after rise improves user experience to substantially reduce the entire call set-up time of mobile terminal.
Embodiment 2:
The present embodiment provides a kind of methods that mobile terminal falls cell after rise, as shown in Figure 2, comprising:
Step S10: mobile terminal receives the paging request that MME is sent, and saves its location information and TAI information at this time,
Request of activating business is sent to MME.
Step S11: mobile terminal saves its this time falling subdistrict frequency point information after end of conversation.
Step S12: when mobile terminal again receives the paging request of MME transmission, judge its persistent district at this time
Whether TAI information and the TAI information of last time are consistent.
If so, thening follow the steps S13: calculating whether the distance between the position of its this time and the position of last time are less than threshold
Value.Wherein, threshold value is the signal cover of a base station.If so, executing step S14: mobile terminal was saved according to last time
Falling subdistrict frequency point information fallen after rise.
If the judging result of step S12 and/or step S13 be it is no, then follow the steps S15: saving mobile terminal at this time
Location information and TAI information, activate business request to MME transmission.Then it executes
Step S20:MME sends mobile terminal to eNB and falls cell instruction after rise.
The falling cell information of configuration is sent to mobile terminal by step S21:eNB.
Step S22: mobile terminal carries out falling cell signal measurement after rise, and measurement result is sent to eNB.
The optimal falling cell of signal is determined as most preferably falling cell after rise by step S23:eNB, and will most preferably fall cell hair after rise
Give mobile terminal.
Step S24: mobile terminal falls back to best falling cell.
By step S20- step S24, make mobile terminal when conversing again, if it has gone out call last time, institute when
Persistent district range, then fallen after rise according to current conventional falling minilocus approach, to enable mobile terminal point feelings
Condition carries out cell falling by different modes, shortens and falls the time after rise and improve user experience.
In the present embodiment, mobile terminal is 4G multimode card, before the step S10 further include:
Step S09: mobile terminal carries out the joint attachment of 4G multimode card.
Wherein, the joint attachment of 4G multimode card refers to that 4G multimode card is attached to 3G network, is communicated using 3G network.4G
After the completion of the joint attachment of multimode card, it is just able to achieve calling link of the mobile terminal in call.
Step S09 is specifically included: as shown in figure 3,
Step S091: mobile terminal 4G multimode card sends Attach Request message to MME.
Step S092:MME sends SGs location update request message to corresponding VLR.SGs location update request message packet
Include IMSI, MME information and location updating type of LAI, 4G multimode card of mobile terminal.
Step S093:VLR stores MME information, and creates and be associated with the SGs of 4G multimode card under MME.
Step S094:VLR initiates the 4G multimode card position more new technological process for arriving HLR according to the IMSI of LAI and 4G multimode card,
And confirmation message is returned to after the completion of update to MME.
Step S095:MME sends attachment and completes message to mobile terminal, completes the joint attachment of 4G multimode card.
In the present embodiment, as shown in Fig. 2, after mobile terminal falling cell further include:
Step S30: judge whether mobile terminal falls the cell LAI that cell LAI combines with 4G multimode card when adhering to after rise consistent.
If not, thening follow the steps S31: mobile terminal carries out location updating.If it is, terminating.
By step S30- step S31, the mobile terminal after falling cell after rise could establish call connection with caller.
Embodiment 1-2's the utility model has the advantages that mobile terminal provided by embodiment 1-2 fall after rise cell method, pass through preservation
Location information, TAI information and falling subdistrict frequency point information when mobile terminal last time converses, and the judgement movement in call next time
Whether whether the position of the persistent district and mobile terminal also when conversing last time is also in the covering of last time call base station for terminal
Range, if can be realized when mobile terminal is conversed again also in last time call where persistent district within the scope of, and move
The position of dynamic terminal is in the base station range also when conversing last time, then when mobile terminal directly falls back to the call of its last time
It falls cell after rise, before any primary call requires that falling cell is measured and selected compared to existing mobile terminal
The case where selecting, then capable of just falling back to suitable cell substantially reduces the time that mobile terminal carries out cell falling, thus significantly
The entire call set-up time for shortening mobile terminal, improves user experience.
Embodiment 3:
The method for falling cell after rise based on mobile terminal provided in embodiment 2, the present embodiment provides a kind of mobile terminal,
As shown in Figure 4, comprising: fall request module 1 after rise, for receiving the paging request of MME transmission, save the position of mobile terminal at this time
Information and TAI information send request of activating business to MME.Preserving module 2, for saving it after mobile terminal call
This time fall subdistrict frequency point information after rise.First judgment module 3, for receiving the paging request of MME transmission again when mobile terminal
When, judging it, whether the TAI information of persistent district and the TAI information of last time are consistent at this time.Second judgment module 4, for the
The judging result of one judgment module 3 is when being, whether to calculate the distance between position and position of last time of this time of mobile terminal
Less than threshold value.It falls module 5 after rise, is to be saved according to 2 last time of preserving module when being for the judging result in the second judgment module 4
Falling subdistrict frequency point information fallen after rise.
Request module 1, preserving module 2, first judgment module 3 and the second judgment module 4 are fallen after rise by setting, can be realized
If when mobile terminal is conversed again also when conversing last time where persistent district within the scope of, and the position of mobile terminal is also
Last time call when base station range in, then mobile terminal directly fall back to its last time call when falling cell, compare
It before any primary call requires that falling cell is measured and selected in existing mobile terminal, then could fall after rise
The case where to suitable cell, substantially reduces the time that mobile terminal carries out cell falling, to substantially reduce mobile terminal
Entire call set-up time, improve user experience.
In the present embodiment, mobile terminal further include: fall instruction sending module 6 after rise, send mobile terminal to eNB for MME
Fall cell instruction after rise.Fall configuration information receiving module 7 after rise, the falling cell information of the configuration for receiving eNB transmission.Signal is surveyed
Module 8 is measured, falls cell signal measurement after rise for carrying out, and measurement result is sent to eNB.It falls cell receiving module 9 after rise, is used for
Receive the best falling cell that eNB is determining and sends.The best cell that falls after rise is the optimal falling cell of signal.Fall module 5 after rise also
For falling back to best falling cell according to the best frequency point information for falling cell after rise.
Instruction sending module 6 is fallen after rise by setting, is fallen configuration information receiving module 7, signal measurement module 8 after rise and is fallen after rise small
Area's receiving module 9, makes mobile terminal when conversing again, if its gone out last time call when where persistent district model
It encloses, is then fallen after rise according to current conventional falling minilocus approach, so that mobile terminal point situation be enable to pass through different sides
Formula carries out cell falling, shortens and falls the time after rise and improve user experience.
In the present embodiment, mobile terminal further includes joint attachable module 10, and the joint for carrying out 4G multimode card is adhered to.
The setting of joint attachable module 10, calling link when mobile terminal being made to can be realized call.
In addition, mobile terminal further includes third judgment module 11 in the present embodiment, for after mobile terminal falls cell after rise
Judge whether it falls the cell LAI that cell LAI combines with 4G multimode card when adhering to after rise consistent.Location updating module 12 is used for
When the judging result of third judgment module 11 is no, the position of mobile terminal is updated.Third judgment module 11 and location updating mould
The setting of block 12, mobile terminal and caller after enabling falling cell establish call connection.
Embodiment 3 the utility model has the advantages that mobile terminal provided in embodiment 3, pass through setting and fall request module after rise, save
Module, first judgment module and the second judgment module were also conversed in last time if can be realized when mobile terminal is conversed again
When where persistent district within the scope of, and the position of mobile terminal also last time converse when base station range in, then move
Terminal directly falls back to the falling cell when call of its last time, compared to existing mobile terminal before any primary call all
It needs to substantially reduce mobile terminal to the case where cell is measured and selected, then can just fall back to suitable cell is fallen after rise
The time for carrying out cell falling improves user experience to substantially reduce the entire call set-up time of mobile terminal.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present and the exemplary implementation that uses
Mode, however the present invention is not limited thereto.For those skilled in the art, essence of the invention is not being departed from
In the case where mind and essence, various changes and modifications can be made therein, these variations and modifications are also considered as protection scope of the present invention.
Claims (9)
1. a kind of method that mobile terminal falls cell after rise characterized by comprising
Step S10: mobile terminal receives the paging request that MME is sent, its location information and TAI information at this time is saved, to MME
Transmission is activated business request；
Step S11: mobile terminal saves its this time falling subdistrict frequency point information after end of conversation；
Step S12: when mobile terminal receive again MME transmission paging request when, judge its at this time persistent district TAI letter
It ceases whether consistent with the TAI information of last time；
If so, thening follow the steps S13: calculating whether the distance between the position of its this time and the position of last time are less than threshold value；
If so, executing step S14: mobile terminal is fallen after rise according to the falling subdistrict frequency point information that last time saves.
2. the method that mobile terminal according to claim 1 falls cell after rise, which is characterized in that if the step S12 and/
Or the judging result of the step S13 be it is no, then follow the steps S15: saving the location information and TAI letter of mobile terminal at this time
Breath sends request of activating business to MME；Then it executes
Step S20:MME sends mobile terminal to eNB and falls cell instruction after rise；
The falling cell information of configuration is sent to mobile terminal by step S21:eNB；
Step S22: mobile terminal carries out falling cell signal measurement after rise, and measurement result is sent to eNB；
The optimal falling cell of signal is determined as most preferably falling cell after rise by step S23:eNB, and the best falling cell is sent out
Give mobile terminal；
Step S24: mobile terminal falls back to the best falling cell.
3. the method that mobile terminal according to claim 1 or 2 falls cell after rise, which is characterized in that mobile terminal is 4G more
Mould card, before the step S10 further include:
Step S09: mobile terminal carries out the joint attachment of 4G multimode card.
4. the method that mobile terminal according to claim 3 falls cell after rise, which is characterized in that the step S09 includes:
Mobile terminal 4G multimode card sends Attach Request message to MME；
MME sends SGs location update request message to corresponding VLR；The SGs location update request message includes mobile terminal
LAI, 4G multimode card IMSI, MME information and location updating type；
VLR stores the MME information, and creates and be associated with the SGs of 4G multimode card under MME；
VLR initiates the 4G multimode card position more new technological process for arriving HLR, and updating according to the IMSI of the LAI and 4G multimode card
At rear return confirmation message to MME；
MME sends attachment and completes message to mobile terminal, completes the joint attachment of 4G multimode card.
5. the method that mobile terminal according to claim 4 falls cell after rise, which is characterized in that mobile terminal fall after rise cell it
Afterwards further include:
Step S30: judge whether mobile terminal falls the cell LAI that cell LAI combines with 4G multimode card when adhering to after rise consistent；
If not, thening follow the steps S31: mobile terminal carries out location updating.
6. a kind of mobile terminal characterized by comprising
It falls request module after rise, for receiving the paging request of MME transmission, saves the location information and TAI letter of mobile terminal at this time
Breath sends request of activating business to MME；
Preserving module this time falls subdistrict frequency point information after rise for saving it after mobile terminal call；
It is small to judge that it is resident at this time when for receiving the paging request of MME transmission again when mobile terminal for first judgment module
Whether the TAI information in area and the TAI information of last time are consistent；
Second judgment module is when being, to calculate the position of this time of mobile terminal for the judging result in the first judgment module
Set whether the distance between position of last time is less than threshold value；
It falls module after rise, is to be saved according to the preserving module last time when being for the judging result in second judgment module
The falling subdistrict frequency point information fallen after rise.
7. mobile terminal according to claim 6, which is characterized in that further include:
It falls instruction sending module after rise, sends mobile terminal to eNB for MME and fall cell instruction after rise；
Fall configuration information receiving module after rise, the falling cell information of the configuration for receiving eNB transmission；
Signal measurement module falls cell signal measurement after rise for carrying out, and measurement result is sent to eNB；
Cell receiving module is fallen after rise, for receiving the best falling cell that eNB is determining and sends；The best falling cell
For the optimal falling cell of signal；
The module that falls after rise is also used to fall back to the best falling cell according to the best frequency point information for falling cell after rise.
8. mobile terminal according to claim 6 or 7, which is characterized in that further include joint attachable module, for carrying out 4G
The joint of multimode card is adhered to.
9. mobile terminal according to claim 8, which is characterized in that further include third judgment module, for mobile whole
End judges whether it falls the cell LAI that cell LAI combines with 4G multimode card when adhering to after rise consistent after falling cell after rise；
Location updating module, for the judging result in the third judgment module be it is no when, update the position of mobile terminal.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110300437A (en) * | 2019-07-25 | 2019-10-01 | 中国联合网络通信集团有限公司 | Shorten method, terminal and system that CSFB cell falls the time after rise |
| CN110381552A (en) * | 2019-07-25 | 2019-10-25 | 中国联合网络通信集团有限公司 | A kind of method and system fallen after rise based on position optimization |
| CN111465094A (en) * | 2020-04-10 | 2020-07-28 | 中国联合网络通信集团有限公司 | Position updating method, system and terminal in combined attachment mode |
| CN113630831A (en) * | 2021-09-16 | 2021-11-09 | 中国联合网络通信集团有限公司 | Cell fallback method, terminal and network side equipment |
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| CN110300437B (en) * | 2019-07-25 | 2021-06-22 | 中国联合网络通信集团有限公司 | Method, terminal and system for shortening CSFB (Circuit switched fallback) cell fall-back time |
| CN110381552B (en) * | 2019-07-25 | 2021-07-09 | 中国联合网络通信集团有限公司 | Method and system for optimizing fallback based on position |
| CN111465094A (en) * | 2020-04-10 | 2020-07-28 | 中国联合网络通信集团有限公司 | Position updating method, system and terminal in combined attachment mode |
| CN113630831A (en) * | 2021-09-16 | 2021-11-09 | 中国联合网络通信集团有限公司 | Cell fallback method, terminal and network side equipment |
| CN113630831B (en) * | 2021-09-16 | 2022-08-26 | 中国联合网络通信集团有限公司 | Cell fallback method, terminal and network side equipment |
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