CN103476073B - Cell falling-back method and equipment - Google Patents
Cell falling-back method and equipment Download PDFInfo
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- CN103476073B CN103476073B CN201310412330.7A CN201310412330A CN103476073B CN 103476073 B CN103476073 B CN 103476073B CN 201310412330 A CN201310412330 A CN 201310412330A CN 103476073 B CN103476073 B CN 103476073B
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 210000004027 cell Anatomy 0.000 claims description 138
- 102000018059 CS domains Human genes 0.000 claims description 102
- 108050007176 CS domains Proteins 0.000 claims description 102
- 230000008859 change Effects 0.000 claims description 13
- 210000002199 attachment cell Anatomy 0.000 claims description 5
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- 101100078001 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) MSC2 gene Proteins 0.000 description 17
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- 230000032683 aging Effects 0.000 description 5
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- 238000004891 communication Methods 0.000 description 2
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Abstract
The invention provides a cell falling-back method and equipment. A mobile terminal starts CSFB falling-back; the mobile terminal supports a first SIM card of an LTE system and a second SIM card of a 2G/3G system; the mobile terminal obtains network information of a first cell where the second SIM card is attached at present from a storage unit; the mobile terminal sends the network information to an MME to enable the MME to send the network information to a second base station corresponding to a cell where the first SIM card is attached and to enable the second base station to send a switching request to a first base station according to the network information; the mobile terminal receives a switching instruction sent by the second base station; the switching instruction is sent to the second base station when the first base station receives the switching request and then allows a CS area of the first SIM card to fall back to the first cell; the mobile terminal enables the CS area of the first SIM card to fall back to the first cell according to the switching instruction. The cell falling-back method can reduce CS area calling time delay.
Description
Technical field
The present invention relates to the communication technology, more particularly, to a kind of cell falling-back method and equipment.
Background technology
In Long Term Evolution（Long Term Evolution, referred to as LTE）At the network design initial stage, LTE network mainly provides
Broadband data service, and the speech business scheme of most operator adopts circuit domain dropping（Circuit Switched
Fallback, referred to as CSFB）Technology, needs to fall back to the second generation and move during the CS domain business such as mobile terminal execution voice to lead to
Letter technology（Second Generation, referred to as 2G）/ G mobile communication（3rd-generation, referred to as
3G）In network, the user with the high coverage rate using 2G/3G network and mature technology as LTE network provides speech business to support
Deng.
At present, in the lte networks, mobile terminal after powering, the smart card of LTE standard（Subscriber Identity
Module, abbreviation SIM）Can be by packet switch（Packet Switched, abbreviation PS）Domain and CS domain carry out combined registering, pass through
Mobile management entity（Mobility Management Entity, abbreviation MME）Ps domain is adhered in the lte networks, by CS domain
It is attached in 2G/3G network.When SIM receives or initiates CS domain business, mobile terminal is carried out little using CSFB technology
When area falls after rise, before accompanying cell is most likely not the best cell residing for terminal, along with the position residing for mobile terminal
Put and change such as moving of mobile terminal, in this case, the mobile terminal cell accompanying in start, just
The business demand of mobile terminal possibly cannot be met, now, mobile terminal needs to re-start web search, suitable to get
Target cell switch over, but existing CSFB technology, because mobile terminal re-searches for obtaining Target cell, can increase
The call flow of CS domain business, leads to CS domain service call time delay to increase, affects Consumer's Experience.
Content of the invention
The present invention provides a kind of cell falling-back method and equipment, in order to solve to realize cell falling by existing CSFB technology
When, there is a problem of that call delay is longer.
To achieve these goals, the invention provides a kind of cell falling-back method, including：
Mobile terminal startup CSFB falling, the first SIM of described mobile terminal support LTE standard and 2G/3G standard
Second SIM；
Described mobile terminal gets the network letter of the currently accompanying first community of the second SIM from memory cell
Breath；The described network information be described second SIM after described first community is adhered to, by corresponding first base of described first community
Station is sent to described mobile terminal；
The described network information is sent to mobile management entity MME by described mobile terminal, so that described MME is by described network
Information is sent to corresponding second base station of cell accompanying by described first SIM, and makes described second base station according to described network
Information sends handover request to described first base station；
Described mobile terminal receives the switching instruction that described second base station sends；Described switching instruction is by described first base station
It is sent to described second base station after receiving described handover request and when falling back to described first community described in permission；
Described mobile terminal will be little to described first for the CS domain dropping under described first SIM according to described switching instruction
Area.
To achieve these goals, the invention provides a kind of mobile terminal, including：
Starting module, falls after rise for starting CSFB；
Acquisition module, the network for getting the currently accompanying first community of the second SIM from memory cell is believed
Breath；The described network information be described second SIM after described first community is adhered to, by corresponding first base of described first community
Station is sent to mobile terminal；
Sending module, for the described network information is sent to described MME, so that the described network information is sent out by described MME
Give described first SIM attachment corresponding second base station of cell, and make described second base station according to the described network information to
Described first base station sends handover request；
Receiver module, for receiving the switching instruction that described second base station sends；Described switching instruction is by described first base
Stand in after receiving described handover request and allow the CS domain dropping under described first SIM to send to during described first community
To described second base station；
Fall module after rise, will be little to described first for the CS domain dropping under described first SIM for being indicated according to described switching
Area；
Wherein, described mobile terminal supports described first SIM of LTE standard and described 2nd SIM of 2G/3G standard
Card.
A kind of cell falling-back method and equipment that the present invention provides.Mobile terminal starts CSFB to be fallen after rise, from memory cell
The network information getting the currently accompanying first community of the second SIM is sent to MME, so that MME is by the net of first community
Network information is sent to corresponding second base station of the currently accompanying cell of the first SIM, and so that the second base station is believed according to this network
Cease and send handover request to the corresponding first base station of first community, mobile terminal receives the switching instruction that the second base station sends；Cut
Change instruction to be sent out after receiving handover request and when allowing the CS domain dropping under the first SIM to first community by first base station
Give the second base station, mobile terminal indicates the CS domain dropping under the first SIM to first community according to switching.In the present invention
Mobile terminal includes the first SIM of LTE standard and the second SIM of 2G/3G standard, and will be currently accompanying for the second SIM
It is local that the network information of cell is stored in mobile terminal.When mobile terminal first SIM needs to carry out CSFB falling, if by
When the change in location of mobile terminal leads to the first SIM in start, accompanying cell in 2G/3G network can not meet
During business demand, mobile terminal can be directly from the network information locally getting the current accompanying cell of the second SIM, at this
When the corresponding base station of cell accompanying by second SIM allows mobile terminal to fall after rise, directly mobile terminal is fallen back to the second SIM
Currently accompanying cell, so that the CS domain business of the first SIM can continue, such mobile terminal does not need to be first again
CS domain search Target cell under SIM, overcomes when existing CSFB falls after rise and there is a problem of that call delay is longer, improve CS domain industry
It is ageing that business continues.
Brief description
Fig. 1 is a kind of schematic diagram of cell falling-back method provided in an embodiment of the present invention；
Fig. 2 is the method schematic diagram that another kind cell provided in an embodiment of the present invention falls after rise；
Fig. 3 is the schematic diagram of another kind cell falling-back method provided in an embodiment of the present invention；
Fig. 4 is a kind of structural representation of mobile terminal provided in an embodiment of the present invention.
Specific embodiment
Below by drawings and Examples, technical scheme is described in further detail.
With the development of mobile communication technology, commercially double-standby mobile teminal gradually occupies increasing ratio.
And the development with LTE technology, communication network also will enter LTE epoch, therefore, the double-standby mobile teminal of LTE pattern
It is increasingly becoming the focus of concern.
Fig. 1 is a kind of schematic diagram of cell falling-back method provided in an embodiment of the present invention.As shown in figure 1, this cell falls after rise
Method comprises the following steps：
101st, mobile terminal starts CSFB and falls after rise；Described mobile terminal supports the first SIM and the 2G/3G system of LTE standard
Second SIM of formula.
Wherein, mobile terminal is the double standby terminal of LTE pattern, including first SIM and of a support LTE standard
Second SIM of individual support 2G/3G standard.First SIM mobile terminal can be resided in LTE network and the second SIM will
Mobile terminal resides in 2G/3G network so that this mobile terminal can be simultaneously standby in LTE network and 2G/3G network.Its
In, the first SIM and the second SIM may be incorporated for providing data service and CS domain business to mobile terminal.But, due to
At the initial stage of LTE development, the CS domain service needed of the first SIM falls back to execution 2G/3G network from LTE network, and this requires
First SIM needs to have CSFB function.
Before step 101 mobile terminal starts CSFB falling：
Mobile terminal upper establish machine by cable after, the first SIM and the second SIM need to carry out net respectively in corresponding network
Network adheres to.First SIM sends joint attach request to the MME in LTE network, and MME is by the ps domain of the first SIM in LTE net
Network is registered, and ps domain is attached to LTE network, and the CS domain of the first SIM is registered by MME in 2G/3G network simultaneously, will
CS domain is attached to 2G/3G network.Specifically, the mobile switching centre in MME with 2G/3G network（Mobile Switching
Center, abbreviation MSC）Between set up direct SGs interface, such that it is able to realize mobile terminal in LTE network and 2G/3G network
Combined registering function.
For the ps domain under the first SIM, MME is that ps domain under the first SIM selects a suitable cell as the
The currently accompanying cell of ps domain under one SIM.For the CS domain under the first SIM, accompanying by the CS domain under the first SIM
2G/3G network be the MSC or VLR Visitor Location Register being found by MME（Visitor Location Register, referred to as
VLR）The co-location carrying out updates, and is not truly the CS domain under the first SIM to be registered to 2G/3G network.Now,
One SIM can only listen to CS domain business, can not execute CS domain business.
While the first SIM carries out network attachment, the second SIM sends attach request to MSC, and MSC is by the 2nd SIM
It is stuck in 2G/3G network and is registered, the second SIM is attached in 2G/3G network.Attached in the network completing the second SIM
After, MSC is that the second SIM selects suitable cell as the initial cell accompanying by the second SIM.In the first SIM and
After second SIM completes network attachment, the first SIM and the second SIM just can be carried out each on the network of oneself attachment
The business carrying.
In practical application, the mobile terminal cell accompanying in start is most likely not the best cell residing for terminal,
Along with mobile terminal location can be constantly occurring change, when mobile terminal location is moved away from start time shift
During terminal location, it is the cell chosen of the first SIM and the second SIM in start it is impossible to meet mobile terminal again
Business demand.Now, the ps domain under the first SIM and the second SIM be accomplished by being continuously updated oneself currently accompanying
Cell.When needing to carry out cell update, mobile terminal can send attachment by the corresponding base station in initial cell to second SIM
Cell update message the second SIM can be attached in first community to MSC, MSC.In the present embodiment, the second SIM is worked as
Front accompanying cell is referred to as first community.
When the first SIM need execute CS domain business when, mobile terminal can receive the first SIM in the lte networks when
The corresponding base station of front accompanying cell is the falling instruction that eNodeB sends, to indicate that mobile terminal carries out CSFB falling.Existing
There is mobile terminal in technology to need by signal search, be that the CS domain under the first SIM selects suitable cell to be linked into 2G/
In 3G network, but re-start the process of signal search, CS domain call delay can be led to longer.In the present embodiment, when
After first community attachment, the network information of first community is sent to movement to two SIMs by the corresponding first base station of first community
Terminal.In the present embodiment after receiving the network information of first community, this network information is stored in and locally deposits by mobile terminal
In storage unit.Wherein, the network information includes the mark of first community and the mark of first base station.
Specifically, when the MME being in LTE network receives CS service request, illustrate that the first SIM needs to carry out CS
Domain business.First SIM is in LTE network in the present embodiment, and the CS domain service needed due to LTE network falls back to 2G/
Carry out in 3G network, MME will send for indicating that CS domain business is fallen back to the falling in 2G/3G network refers to mobile terminal
Show.Alternatively, mobile terminal can send CS service request to MME as calling party, or mobile terminal is as callee,
MME can receive the CS service request that calling party is sent by MSC.
102nd, described mobile terminal get from memory cell the second SIM currently accompanying first community network letter
Breath；The described network information be described second SIM after described first community is adhered to, by corresponding first base of described first community
Station is sent to described mobile terminal.
After receiving falling instruction, mobile terminal can get the current institute of the second SIM from local storage unit
Then the network information of first community is sent MME by the network information of the first community of attachment.Wherein, the network of first community
Information is sent to mobile terminal by the corresponding first base station of first community for the second SIM after 2G/3G network attachment.
103rd, the described network information is sent to MME by described mobile terminal, so that the described network information is sent by described MME
To corresponding second base station of cell accompanying by described first SIM, and make described second base station according to the described network information to institute
State first base station and send handover request.
After receiving the network information of first community of mobile terminal transmission, MME is by the network information of this first community
It is sent to corresponding second base station of the currently accompanying cell of the first SIM, the second base station is according to the network information of first community
Send handover request to first base station, mobile terminal is fallen back to first base station application by Target cell by this handover request.
Specifically, the network information of first community is sent to behind the second base station by MME, and the second base station is according to first in this network information
The identifier lookup of base station, to first base station, sends handover request to first base station.First base station receives the switching of the second base station
After request, determine whether that mobile terminal falls back in 2G/3G network, and send permission to the second base station to fall response after rise.
104th, described mobile terminal receives the switching instruction that described second base station sends；Described switching indicates by described first
Base station is sent out after receiving described handover request and when allowing the CS domain dropping under described first SIM to described first community
Give described second base station.
Specifically, after allowing mobile terminal to fall back to first community, mobile terminal can receive the second base station and send
Switching instruction, to indicate that mobile terminal falls back to Target cell.Specifically, first base station is allowing mobile terminal to fall back to the
After one cell, one can be sent to MSC and allow to fall after rise response, this permission falling response is simultaneously sent to MME by MSC, and MME is connecing
After receiving this permission falling response, send a switching instruction to the second base station, then switching instruction is sent to by the second base station
Mobile terminal, to indicate that mobile terminal falls back to first community.
105th, described mobile terminal indicates the CS domain dropping under described first SIM to described first according to described switching
Cell.
After receiving switching instruction, mobile terminal can fall back to first community according to this switching instruction.When mobile whole
After first community is fallen back at end, set up CS domain between mobile terminal and first base station and be connected, the CS domain business in the first SIM is just
Can be continued in first community.
The cell falling-back method that the present embodiment provides, mobile terminal starts CSFB to be fallen after rise, gets the from memory cell
The network information of the currently accompanying first community of two SIMs is sent to MME, so that the network information of first community is sent out by MME
Give the currently accompanying cell of the first SIM corresponding second base station, and make the second base station according to this network information to first
The corresponding first base station of cell sends handover request, and mobile terminal receives the switching instruction that the second base station sends, and according to switching
Instruction is by the CS domain dropping under the first SIM to first community.In the present embodiment, mobile terminal includes a SIM of LTE standard
Card and the second SIM of 2G/3G standard, and by the network information of the current accompanying cell of the second SIM be stored in mobile eventually
End is local, when the CS domain under the first SIM needs to carry out CSFB falling, if due to accompanying cell before mobile terminal
Be not best cell or led to due to the change in location of mobile terminal the first SIM start when appended in 2G/3G network
When the cell can not meet business demand, mobile terminal can be directly currently accompanying little from locally getting the second SIM
The network information in area, when currently the corresponding base station of accompanying cell allows mobile terminal to fall after rise to this second SIM, directly by the
CS domain dropping under one SIM is to the second SIM currently accompanying cell, so that the CS domain business of the first SIM can continue,
So mobile terminal does not need to be the CS domain search Target cell under a SIM again, overcomes when existing CSFB falls after rise and exists
The longer problem of call delay, improves the ageing of CS domain business continuing.
Fig. 2 is the schematic diagram of another kind cell falling-back method provided in an embodiment of the present invention.As shown in Fig. 2 the method bag
Include following steps：
201st, network by mobile terminal attachment.
Wherein, mobile terminal is the double standby terminal of LTE pattern, including first SIM and of a support LTE standard
Second SIM of individual support 2G/3G standard.First SIM mobile terminal can be resided in LTE network and the second SIM will
Mobile terminal resides in 2G/3G network so that this mobile terminal can be simultaneously standby in LTE network and 2G/3G network.The
One SIM and the second SIM all can provide data service and CS domain business to mobile terminal.But, due to develop in LTE
At the initial stage, the CS domain service needed of the first SIM falls back to execution 2G/3G network from LTE network, and this requires the first SIM
Need to have CSFB function.
Mobile terminal upper establish machine by cable after, the first SIM and the second SIM need to carry out net respectively in corresponding network
Network adheres to.First SIM sends joint attach request to the MME in LTE network, and MME is by the ps domain of the first SIM in LTE net
Network is registered, and ps domain is attached to LTE network, and the CS domain of the first SIM is registered by MME in 2G/3G network simultaneously, will
The CS domain of the first SIM is attached to 2G/3G network.Carry out the process of network attachment with regard to the first SIM and the second SIM, can
Referring to the record of related content in above-described embodiment, here is omitted.
Herein it is to be appreciated that the 2G/3G network accompanying by CS domain under the first SIM be the MSC being found by MME or
The co-location that VLR is carried out updates, and is not truly the CS domain under the first SIM to be registered to 2G/3G network.Herein,
One SIM can listen to CS domain business, can not execute CS domain business.
In practical application, the mobile terminal cell accompanying in start is most likely not the best cell residing for terminal,
Along with mobile terminal location can be constantly occurring change, when mobile terminal location is moved away from start time shift
During terminal location, it is the cell chosen of the first SIM and the second SIM in start it is impossible to meet mobile terminal again
Business demand.Now, the ps domain under the first SIM and the second SIM be accomplished by being continuously updated oneself currently accompanying
Cell.When needing to carry out cell update, mobile terminal can send attachment by the corresponding base station in initial cell to second SIM
Cell update message the second SIM can be eventually adhering in current first community to MSC, MSC.
202nd, mobile terminal sends CS service request to eNodeB.
In the present embodiment, mobile terminal can send CS service request as calling terminal by the first SIM.Specifically,
Mobile terminal sends CS service request to the corresponding eNodeB of the currently accompanying cell of the first SIM, to ask in a SIM
CS domain business is carried out on card.
203rd, eNodeB sends CS service request and is sent to MME.
204th, MME sends to eNodeB and falls instruction after rise.
After receiving CS service request, because the first SIM is LTE standard, the CS domain business under the first SIM is necessary
Fall back in 2G/3G network and process, MME sends to eNodeB and falls instruction after rise.This falling indicates returns CS domain business for instruction
Fall in 2G/3G network, in 2G/3G network, CS domain business is processed.
205th, eNodeB sends falling and is indicated to mobile terminal.
206th, the network information of the current accompanying first community of acquisition for mobile terminal second SIM.
In the present embodiment, after first community is adhered to, the corresponding first base station of first community is by first for the second SIM
The network information of cell is sent to mobile terminal.In the present embodiment after receiving the network information of first community, mobile terminal
This network information is stored in local storage unit.Wherein, the network information includes the mark of first community and first base station
Mark.Further, after receiving falling instruction, mobile terminal is directly obtained the second SIM from local storage unit
The currently network information of accompanying first community.
207th, mobile terminal sends the network information to eNodeB.
208th, eNodeB sends the network information to MME.
209th, MME sends the network information to MSC2.
In the present embodiment, when the first SIM carries out network attachment in step 201, the CS domain in an ISM card is adhered to
Mobile switching centre corresponding to 2G/3G network is MSC2.
210th, MSC2 sends handover request to MSC1.
MSC2, according to the network information receiving, can inquire the mobile switching centre of first community place network
MSC1.MSC2 sends handover request to MSC1, to apply for falling back to mobile terminal in first community.In the present embodiment, switching
Request includes the network information of first community.Wherein, the network information of first community includes the mark and first of first community
The mark of base station.
Herein it is to be appreciated that the first SIM is in network attachment, the 2G/3G network pair accompanying by CS domain in the first SIM
The MSC2 answering is same MSC from MSC1 it is also possible to not be different MSC.
211st, MSC1 sends handover request to first base station.
After MSC1 receives handover request, according to the mark of the first base station carrying in this network information, to first base station
It is sent to handover request, mobile terminal is fallen back to first community by application.
212nd, first base station sends and allows falling to respond to MSC1.
After receiving handover request, first base station can decide whether to allow mobile terminal to fall after rise.If allowing to move
Terminal falls back to first community, and first base station returns to MSC1 and allows to fall response after rise.
213rd, MSC1 sends and allows falling to respond to MSC2.
MSC1, after receiving permission falling response, this permission is fallen after rise response and is transmitted to the 2G/ accompanying by the first SIM
The corresponding MSC2 of 3G network.
214th, MSC2 sends to MME and allows to fall response after rise.
MSC2, after receiving permission falling response, is transmitted to MME by allowing falling response.
215th, MME sends and allows falling to respond to eNodeB.
216th, eNodeB switches mobile terminal into first base station.
After receiving permission falling response, it is little that eNodeB can learn that first base station allows mobile terminal to fall back to first
Area, eNodeB switches mobile terminal into first base station.
217th, eNodeB sends switching and is indicated to mobile terminal.
After completing network switching, eNodeB sends switching instruction to mobile terminal, and instruction mobile terminal falls back to first
Cell.
218th, mobile terminal falls back to first community, sets up CS domain business in first community.
Mobile terminal, after receiving switching instruction, falls back to first community according to switching instruction, and builds in first community
Vertical CS domain business.
In the present embodiment, mobile terminal includes the first SIM of LTE standard and the second SIM of 2G/3G standard, and will
It is local, when the CS domain under the first SIM that the network information of the currently accompanying first community of the second SIM is stored in mobile terminal
When needing to carry out CSFB and falling after rise, if because accompanying cell before mobile terminal is not best cell or due to mobile terminal
Change in location and when leading to the first SIM cell accompanying in 2G/3G network can not meet business demand in start,
Mobile terminal can be worked as in this second SIM directly from the network information locally getting the current accompanying cell of the second SIM
When front accompanying cell corresponding base station permission mobile terminal falls after rise, directly by the CS domain dropping under the first SIM to the 2nd SIM
Card is currently in accompanying cell, so that the CS domain business of the first SIM can continue, such mobile terminal does not need to be the again
CS domain search Target cell under one SIM, overcomes when existing CSFB falls after rise and there is a problem of that call delay is longer, improve CS
Domain business continuing ageing.
Fig. 3 is the schematic diagram of another kind cell falling-back method provided in an embodiment of the present invention.As shown in figure 3, the method bag
Include following steps：
301st, network by mobile terminal attachment.
Step 300 can be found in the record of related content in above-described embodiment, and here is omitted.
302nd, MSC2 sends CS service request to MME.
Mobile terminal in the present embodiment can be used as called end.Other-end can send CS business to the first SIM
Request, now, the MSC2 being in 2G/3G network sends CS service request to being in MME in LTE network.
303rd, MME sends falling and is indicated to eNodeB.
Because the CS domain of the first SIM need to be fallen back in 2G/3G network, after receiving CS service request, MME need to
ENodeB sends and falls instruction after rise.Wherein, eNodeB is the corresponding base station of cell accompanying by the first SIM.
304th, eNodeB sends falling and is indicated to mobile terminal.
After receiving and falling instruction after rise, eNodeB is sent to mobile terminal by falling instruction after rise, to inform that mobile terminal will enter
Row falls after rise.
305th, the network information of the currently accompanying first community of acquisition for mobile terminal second SIM.
306th, mobile terminal sends the network information to eNodeB.
307th, eNodeB sends the network information to MME.
308th, MME sends the network information to MSC2.
309th, MSC2 sends handover request to MSC1.
310th, MSC1 sends handover request to first base station.
311st, first base station sends and allows falling to respond to MSC1.
312nd, MSC1 sends and allows falling to respond to MSC2.
313rd, MSC2 sends to MME and allows to fall response after rise.
314th, MME sends and allows falling to respond to eNodeB.
315th, eNodeB switches mobile terminal into first base station.
316th, eNodeB sends switching and is indicated to mobile terminal.
317th, mobile terminal falls back to first community, sets up CS domain business in first community.
Above-mentioned steps 305～step 317 can be found in the record of step 206 in examples detailed above～step 218 related content, this
Place repeats no more.
Herein it is to be appreciated that the first SIM is in network attachment, the 2G/3G network pair accompanying by CS domain in the first SIM
The MSC2 answering is same MSC from MSC1 it is also possible to not be different MSC.
In the present embodiment, mobile terminal includes the first SIM of LTE standard and the second SIM of 2G/3G standard, and will
It is local, when mobile terminal needs to carry out that the network information of the currently accompanying first community of the second SIM is stored in mobile terminal
When CSFB falls after rise, if because accompanying cell during mobile terminal-opening is not best cell or the position due to mobile terminal
Change and lead to the cell in the CS domain accompanying network in 2G/3G in start under the first SIM can not meet business demand
When, mobile terminal can be directly from the network information locally getting the current accompanying cell of the second SIM, in the 2nd SIM
Card is when currently the corresponding base station of accompanying cell allows the CS domain dropping under the first SIM, directly by the CS domain under the first SIM
Fall back to the second SIM currently in accompanying cell, so that the CS domain business of the first SIM can continue, such mobile terminal
Do not need to re-search for Target cell, overcome when existing CSFB falls after rise and there is a problem of that call delay is longer, improve CS domain industry
It is ageing that business continues.
Fig. 4 is a kind of structural representation of mobile terminal provided in an embodiment of the present invention.As shown in figure 4, this mobile terminal
Including：Starting module 40, acquisition module 41, sending module 42, receiver module 43 and falling module 44.
Wherein, mobile terminal is double standby terminal, is provided with the first SIM 45 He of LTE standard in this mobile terminal
Second SIM 46 of 2G/3G standard.First SIM 45 mobile terminal can be resided in LTE network and the second SIM 46 will
Mobile terminal resides in 2G/3G network so that this mobile terminal can be simultaneously standby in LTE network and 2G/3G network.The
One SIM 45 and the second SIM 46 all can provide data service and CS domain business to mobile terminal.But, due to sending out in LTE
At the initial stage of exhibition, the CS domain service needed of the first SIM 45 falls back to execution 2G/3G network from LTE network, and this requires first
SIM 45 needs to have CSFB function.
In the present embodiment, mobile terminal also includes：First attachable module 47 and the second attachable module 48.
On mobile terminals after electricity, the first attachable module 47 is used for sending joint attach request to described MME, so that described
MME CS domain in the lte networks and by described first SIM 45 by the packet switched ps domain attachment of described first SIM 45
It is attached in 2G/3G network.Second attachable module 48 is used for sending described attachment in described first attachable module 48 to described MME
While request, send attach request to the mobile switching centre in 2G/3G network, so that described mobile switching centre will be described
Second SIM 46 is attached in 2G/3G network.
In the present embodiment, for the first SIM 45, MME is that the ps domain under the first SIM 45 selects a suitable cell
As the currently accompanying cell of the ps domain under the first SIM 45.For the CS domain under the first SIM, under the first SIM 45
2G/3G network accompanying by CS domain is to be updated by the co-location that MSC or VLR that MME finds is carried out, and truly will be not
CS domain under first SIM 45 is registered to 2G/3G network.Now, the first SIM 45 can only listen to CS domain business, can not
Execution CS domain business.
While the first SIM 45 carries out network attachment, the second SIM 46 sends attach request to MSC, and MSC is by the
Two SIMs 46 are registered in 2G/3G network, and the second SIM 46 is attached in 2G/3G network.For the second SIM
46, MSC is that the second SIM 46 selects suitable cell as the initial cell accompanying by the second SIM 46.
In practical application, before mobile terminal, accompanying cell is most likely not best cell, along with mobile terminal
Location can be constantly occurring change, when mobile terminal location moves terminal location away from start time shift
When, it is the cell chosen of the first SIM 45 and the second SIM 46 in start it is impossible to meet the business demand of mobile terminal again.
Now, the ps domain under the first SIM 45 and the second SIM 46 are accomplished by being continuously updated oneself currently accompanying cell.
In the present embodiment, mobile terminal also includes：Cell update module 49 and memory cell 50.
, when needing to carry out cell update, cell update module 49 can be corresponding by initial cell for second SIM 46
Base station sends attachment cell update message to MSC, and the second SIM 46 can be re-attached in first community for MSC.This enforcement
In example, cell currently accompanying for the second SIM 46 is referred to as first community.
For the CS domain under the first SIM 45 only when sending CSFB falling, the CS domain under the first SIM 45 just needs
Re-start cell attachment.In the present embodiment, the currently accompanying cell of the second SIM 46 is referred to as first community.
Further, after the second SIM 46 is adhered in first community, the corresponding first base station of first community is by
The network information of one cell is sent to mobile terminal.In the present embodiment after receiving the network information of first community, mobile whole
This network information is stored in memory cell 50 at end.Wherein, the network information includes the mark of first community and first base station
Mark.
CSFB can be started by starting module 40 in the present embodiment mobile terminal to fall after rise.As the MME being in LTE network
When receiving CS service request, illustrate that the first SIM 45 needs to carry out CS domain business.Because the first SIM 45 is in LTE network
In, the CS domain service needed of the first SIM 45 falls back in 2G/3G network and carries out.
When mobile terminal is as Calling Side, starting module 40 can be by the currently accompanying cell of the first SIM 45
Corresponding second base station is eNodeB, sends CS service request to MME, after MME receives CS service request, can be to startup mould
Block 40 sends the falling instruction falling back to CS domain business for instruction in 2G/3G network.Alternatively, when mobile terminal is as quilt
The side of crying, other mobile terminals can by MSC to the first SIM 45 in the present embodiment accompanying by LTE network in MME send out
When playing CS service request, after receiving CS service request, MME sends for indicating that CS domain business falls back to starting module 40
Falling instruction in 2G/3G network.
After starting module 40 starts CSFB falling, acquisition module 41 gets the second SIM 46 from memory cell 49 and works as
The network information of front the first accompanying mark cell.After acquisition module 41 gets the network information, sending module 42 is by first
The network information of cell is sent to MME, and it is currently accompanying that the network information of first community is sent to the first SIM 45 by MME
Corresponding second base station of cell, the second base station sends handover request according to the network information to first base station, to apply for moving end
First community is fallen back at end.Specifically, the network information of first community is sent to behind the second base station by MME, the second base station according to
The identifier lookup of the first base station in the network information, to first base station, sends handover request to first base station.Receiving switching
After request, first base station determines whether CS domain dropping under the first SIM in 2G/3G network, and sends out to the second base station
Permission is sent to fall response after rise.
If CS domain is adhered in 2G/3G network in the first SIM 45, first base station allows mobile terminal to fall after rise
To first community.First base station allow by the CS domain dropping under the first SIM to first community when, can to MSC transmission one
Individual allow to fall response after rise, this permission falling response is simultaneously sent to MME by MSC, MME receiving after this permission falls response after rise, to
Second base station sends a switching instruction, and then the second base station is sent to receiver module 43 by switching instruction, is moved eventually with indicating
End is by the CS domain dropping under the first SIM to first community.
After receiver module 43 receives switching instruction, falling module 44 after rise can indicate the first SIM according to this switching
Under CS domain dropping to first community.After the CS domain dropping under the first SIM is to first community, mobile terminal and first base station
Between set up CS domain and connect, the CS domain business in the first SIM 45 just can be continued in first community.
The mobile terminal that the present embodiment provides, when starting CSFB falling, gets the second SIM from memory cell and works as
The network information of front accompanying first community is sent to MME, so that the network information of first community is sent to first by MME
Corresponding second base station of the currently accompanying cell of SIM, and so that the second base station is corresponded to first community according to this network information
First base station send handover request, mobile terminal receives the switching instruction that the second base station sends, and according to switching instruction by the
CS domain dropping under one SIM is to first community.In the present embodiment, mobile terminal supports the first SIM and the 2G/3G of LTE standard
Second SIM of standard, and the network information of cell accompanying by the second SIM is stored in mobile terminal locally, work as movement
When terminal needs to carry out CSFB falling, because accompanying cell during mobile terminal-opening can not be best cell, or by
When the change in location of mobile terminal leads to the first SIM in start, accompanying cell in 2G/3G network can not meet
During business demand, mobile terminal can be directly from the network information locally getting the current accompanying cell of the second SIM, at this
CS domain under first SIM when currently the corresponding base station of accompanying cell allows mobile terminal to fall after rise, is directly returned by the second SIM
Fall the second SIM currently in accompanying cell, so that the CS domain business of the first SIM can continue, such mobile terminal is not
Need to be the CS domain search Target cell under the first SIM again, there is call delay when overcoming existing CSFB falling longer
Problem, improve the ageing of CS domain business continuing.
Finally it should be noted that：Various embodiments above only in order to technical scheme to be described, is not intended to limit；To the greatest extent
Pipe has been described in detail to the present invention with reference to foregoing embodiments, it will be understood by those within the art that：Its according to
So the technical scheme described in foregoing embodiments can be modified, or wherein some or all of technical characteristic is entered
Row equivalent；And these modifications or replacement, do not make the essence of appropriate technical solution depart from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of cell falling-back method is it is characterised in that include：
Mobile terminal starts CSFB to be fallen after rise, and described mobile terminal includes supporting the first SIM of LTE standard and supports 2G/3G system
Second SIM of formula；The ps domain of described first SIM is attached to LTE network, and CS domain is attached to 2G/3G network；Meanwhile, described
Second SIM is attached to 2G/3G network；Described first SIM and described second SIM are carried out each on accompanying network
The business carrying；
Described mobile terminal gets the network information of the current accompanying first community of the second SIM from memory cell；Described
The network information, is sent by the corresponding first base station of described first community for described second SIM after described first community is adhered to
To described mobile terminal；
The described network information is sent to mobile management entity MME by described mobile terminal, so that described MME is by the described network information
It is sent to described first SIM currently corresponding second base station of accompanying cell, and make described second base station according to described network
Information sends handover request to described first base station；
Described mobile terminal receives the switching instruction that described second base station sends；Described switching instruction is being connect by described first base station
After receiving described handover request and allow the circuit-switched CS domain under described first SIM to fall back to and send out during described first community
Give described second base station；
Described mobile terminal indicates the CS domain dropping under described first SIM to described first community according to described switching.
2. cell falling-back method according to claim 1 falls bag after rise it is characterised in that described mobile terminal starts CSFB
Include：
Described mobile terminal sends CS service request to described MME；
What described mobile terminal received that described MME sends fall back to the falling in 2G/3G network for instruction by CS domain business refers to
Show.
3. cell falling-back method according to claim 2 is it is characterised in that described mobile terminal sends institute to described MME
Before stating CS service request, also include：
Electricity on described mobile terminal-opening；
Described mobile terminal sends joint attach request to described MME, so that the packet of described first SIM is handed over by described MME
Change ps domain attachment to be attached in 2G/3G network in the lte networks and by the CS domain of described first SIM；
Described mobile terminal sends attach request to the moving exchanging center MSC in 2G/3G network, so that described MSC will be described
Second SIM is attached in the initial cell of 2G/3G network.
4. cell falling-back method according to claim 3 is it is characterised in that described mobile terminal is in 2G/3G network
Mobile switching centre sends attach request, so that described second SIM is attached to 2G/3G network by described mobile switching centre
After in initial cell, also include：
Described mobile terminal sends attachment cell by the corresponding base station in described initial cell to MME and changes message, so that described
MME, according to described attachment cell change message, described second SIM is attached in described first community；
Receive the described network information of described first community corresponding first base station transmission；
The described network information is stored in described memory cell by described mobile terminal.
5. the cell falling-back method according to any one of claim 1-4 is it is characterised in that the described network information includes：Institute
State the mark of first community and the mark of described first base station.
6. a kind of mobile terminal is it is characterised in that include：
Starting module, falls after rise for starting CSFB；
Acquisition module, for getting the network information of the currently accompanying first community of the second SIM from memory cell；Institute
State the network information be described second SIM after described first community is adhered to, sent out by the corresponding first base station of described first community
Give mobile terminal；
Sending module, for the described network information is sent to MME, so that the described network information is sent to first by described MME
Corresponding second base station of cell of SIM attachment, and make described second base station according to the described network information to described first base station
Send handover request；
Receiver module, for receiving the switching instruction that described second base station sends；Described switching instruction is existed by described first base station
It is sent to institute after receiving described handover request and when allowing the CS domain dropping under described first SIM to described first community
State the second base station；
Fall module after rise, for indicating the CS domain dropping under described first SIM to described first community according to described switching；
Wherein, described mobile terminal includes described first SIM and described the second of support 2G/3G standard supporting LTE standard
SIM；The ps domain of described first SIM is attached to LTE network, and CS domain is attached to 2G/3G network；Meanwhile, described second SIM
It is attached to 2G/3G network；The industry that described first SIM and described second SIM are each carried on accompanying network
Business.
7. mobile terminal according to claim 6 is it is characterised in that described starting module is specifically for sending out to described MME
Send CS service request, and receive the described falling instruction that described MME sends.
8. mobile terminal according to claim 7 is it is characterised in that also include：
First attachable module, for described MME send joint attach request so that described MME by described first SIM dividing
Group exchanges ps domain and adheres to the initial cell being attached to 2G/3G network in the lte networks and by the CS domain of described first SIM
In；
Second attachable module, for sending attach request to the moving exchanging center MSC in 2G/3G network, so that described MSC will
Described second SIM is attached in 2G/3G network.
9. mobile terminal according to claim 8 is it is characterised in that also include：
Cell changes module, changes message for sending attachment cell by the corresponding base station in described initial cell to MME, so that
Described MME, according to described attachment cell change message, described second SIM is attached in described first community；
Memory cell, for receiving and storing the described network information of described first community corresponding first base station transmission.
10. the mobile terminal according to any one of claim 6-9 is it is characterised in that the described network information includes：Described
The mark of one cell and the mark of described first base station.
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103747493B (en) * | 2014-01-27 | 2017-03-08 | 中国联合网络通信集团有限公司 | Data service handling method, terminal, base station and mobile management entity |
| CN104883713A (en) * | 2014-02-28 | 2015-09-02 | 华为技术有限公司 | Method for determining terminal communication mode and terminal |
| CN103974231B (en) * | 2014-05-21 | 2017-10-03 | 中国联合网络通信集团有限公司 | Location updating method and mobile terminal |
| WO2016011603A1 (en) * | 2014-07-22 | 2016-01-28 | 华为技术有限公司 | User equipment and circuit switched domain fall-back switching method |
| CN105657763A (en) * | 2014-12-08 | 2016-06-08 | 中国移动通信集团公司 | Method and device for realizing circuit switched fallback |
| CN106162763B (en) * | 2015-04-02 | 2021-01-29 | 小米科技有限责任公司 | SIM card switching method and device |
| CN106304211B (en) * | 2015-05-29 | 2019-06-21 | 中国移动通信集团广东有限公司 | A method and device for constructing a CSFB network frequency point fallback in the circuit domain |
| CN105376765B (en) * | 2015-12-02 | 2019-04-05 | 中国联合网络通信集团有限公司 | A kind of method and device reducing CSFB time delay |
| CN107018510B (en) * | 2016-01-27 | 2020-04-24 | 中国移动通信集团内蒙古有限公司 | Fallback frequency point configuration method and device |
| US11246061B2 (en) | 2016-03-30 | 2022-02-08 | Honor Device Co., Ltd. | Voice service processing method and terminal device |
| CN105744581A (en) * | 2016-04-01 | 2016-07-06 | 宇龙计算机通信科技(深圳)有限公司 | Network switching method and device based on eSIM (Embedded Subscriber Identity Module) card, and mobile terminal |
| WO2017201694A1 (en) * | 2016-05-25 | 2017-11-30 | 华为技术有限公司 | Csfb implementation method and access network device |
| WO2018018465A1 (en) * | 2016-07-27 | 2018-02-01 | 北京小米移动软件有限公司 | Method and apparatus for switching network functions |
| CN109257776B (en) * | 2017-07-12 | 2022-03-22 | 中兴通讯股份有限公司 | Method and device for circuit switched fallback of dual-card terminal and terminal |
| CN110418384B (en) * | 2018-04-26 | 2021-02-23 | 华为技术有限公司 | Circuit switching backspacing method and device |
| CN110366165B (en) * | 2019-07-17 | 2021-12-14 | 中国联合网络通信集团有限公司 | Method and system for re-associating attachment of mobile terminal |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102308629A (en) * | 2011-07-18 | 2012-01-04 | 华为技术有限公司 | Method of voice falling back and device thereof |
| CN102387560A (en) * | 2010-08-30 | 2012-03-21 | 中兴通讯股份有限公司 | Method and system capable of realizing circuit domain backspacing and circuit domain backspacing detection |
| CN102547891A (en) * | 2010-12-15 | 2012-07-04 | 中兴通讯股份有限公司 | Method for realizing circuit switched fallback business and terminal with double receiving modes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009095777A1 (en) * | 2008-01-31 | 2009-08-06 | Telefonaktiebolaget L M Ericsson (Publ) | Circuit switched fallback for mobile terminated calls |
-
2013
- 2013-09-11 CN CN201310412330.7A patent/CN103476073B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102387560A (en) * | 2010-08-30 | 2012-03-21 | 中兴通讯股份有限公司 | Method and system capable of realizing circuit domain backspacing and circuit domain backspacing detection |
| CN102547891A (en) * | 2010-12-15 | 2012-07-04 | 中兴通讯股份有限公司 | Method for realizing circuit switched fallback business and terminal with double receiving modes |
| CN102308629A (en) * | 2011-07-18 | 2012-01-04 | 华为技术有限公司 | Method of voice falling back and device thereof |
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