CN103476077B - Network attached method and equipment - Google Patents
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- CN103476077B CN103476077B CN201310412128.4A CN201310412128A CN103476077B CN 103476077 B CN103476077 B CN 103476077B CN 201310412128 A CN201310412128 A CN 201310412128A CN 103476077 B CN103476077 B CN 103476077B
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Abstract
The invention provides a kind of network attached method and equipment, mobile terminal sends the first attachment request to MSC, so that the CS territory under 2G/3G standard is attached in the first community of 2G/3G network by MSC；Mobile terminal sends the second attachment request to MME, so that the PS territory under LTE standard is attached in the second community of LTE network by MME；The first network information of the first community accompanying by acquisition for mobile terminal 2G/3G standard；Mobile terminal sends the 3rd attachment request according to the first base station that first network information is corresponding to the first community, so that the 3rd attachment request is sent to MSC by the first base station, and makes MSC be attached in described first community in the CS territory under LTE standard.It is in the optimum attachment community that 2G/3G standard selects that CS territory under LTE standard directly can be attached to mobile terminal by the present invention.
Description
Technical field
The present invention relates to the communication technology, particularly relate to a kind of network attached method and equipment.
Background technology
At Long Term Evolution (Long Term Evolution, referred to as LTE) network design initial stage, LTE
Network mainly provides broadband data service, and speech business etc. needs to fall back to the second generation/third generation (Second
Generation/3rd-generation, referred to as 2G/3G) in mobile communications network, to utilize 2G/3G
The user that the high coverage rate of network and mature technology are LTE network provides speech business etc..
For the mobile terminal of LTE standard, packet switch under LTE standard (Packet Switched,
It is called for short PS) territory needs attachment in the lte networks, and the circuit switching (Circuit under LTE standard
Switched, is called for short CS) territory needs to be attached in 2G/3G network.At present, the mobile end of LTE standard
After end start, mobile terminal can be to mobile management entity (the Mobility Management in LTE network
Entity, is called for short MME) send and combine attachment request, MME is LTE standard according to the algorithm prestored
Under CS territory derive a mobile switching centre (Mobile Switching Center, be called for short MSC),
CS territory is attached in Target cell by the MSC then derived.
The above-mentioned mobile terminal to LTE standard carries out in the method for joint network attachment, owing to MSC is
By MME according to algorithmic derivation out, MSC be CS territory under LTE standard choose accompanying
Target cell, may not be optimal attachment community for mobile terminal.
Summary of the invention
The present invention provides a kind of network attached method and equipment, existing under LTE standard in order to solve
CS territory exist during network attachment selected by attachment community be not likely to be asking of optimal attachment community
Topic.
To achieve these goals, the invention provides a kind of network attached method, including:
Mobile terminal sends the first attachment request to moving exchanging center MSC, so that described MSC will
CS territory under 2G/3G standard is attached in the first community of 2G/3G network；Described mobile terminal support
2G/3G standard and LTE standard；
Described mobile terminal sends the second attachment request to mobile management entity MME, so that described MME
Packet switched ps domain under described LTE standard is attached in the second community of LTE network；
The first network information of the first community described in described acquisition for mobile terminal；
Described mobile terminal is sent out according to the first base station that described first network information is corresponding to described first community
Send the 3rd attachment request, so that described 3rd attachment request is sent to described MSC by described first base station,
And make described MSC be attached in described first community in the CS territory under described LTE standard.
To achieve these goals, the invention provides a kind of mobile terminal, including:
First attachable module, for sending the first attachment request to moving exchanging center MSC, so that described
CS territory under 2G/3G standard is attached in the first community of 2G/3G network by MSC；
Second attachable module, sends the second attachment for described mobile terminal to mobile management entity MME
Request, so that the packet switched ps domain under described LTE standard is attached to LTE network by described MME
The second community in；
Acquisition module, for obtaining the first network information of the first community accompanying by described 2G/3G standard；
3rd attachable module, for according to described first network information corresponding to described first community first
Base station sends the 3rd attachment request, so that described 3rd attachment request is sent to described by described first base station
MSC, and make described MSC be attached in described first community in the CS territory under described LTE standard；
Wherein, described mobile terminal supports described 2G/3G standard and described LTE standard.
A kind of network attached method of present invention offer and equipment.Mobile terminal sends the first attachment to MSC
Request, so that 2G/3G standard is attached in the first community of 2G/3G network by MSC, mobile terminal
The second attachment request is sent, so that the PS territory under LTE standard is attached to LTE by MME to MME
In second community of network, the first network of the first community accompanying by acquisition for mobile terminal 2G/3G standard
Information, sends the 3rd attachment request according to the first base station that first network information is corresponding to the first community, with
Make the first base station that the 3rd attachment request to be sent to MSC, and make MSC by the CS territory under LTE standard
It is attached in the first community.Mobile terminal of the present invention supports 2G/3G standard and LTE standard, the first community
For mobile terminal be CS territory under 2G/3G standard select most preferably adhere to community, complete 2G/3G system
After the network attachment in the CS territory under formula and the PS territory under LTE standard, it is little that mobile terminal can obtain first
The network information in district, sends under LTE standard for request to the first base station according to this network information
CS adheres in territory the Attach Request message in the first community, to be attached directly in the CS territory under LTE standard
In first community, thus overcome in prior art and cannot directly the CS territory under LTE standard be adhered to
In the optimal problem adhering to community that mobile terminal selects.
Accompanying drawing explanation
The schematic diagram of a kind of network attached method that Fig. 1 provides for the embodiment of the present invention；
The method schematic diagram of the another kind of network attachment that Fig. 2 provides for the embodiment of the present invention；
The schematic diagram of the another kind of network attached method that Fig. 3 provides for the embodiment of the present invention；
The structural representation of a kind of mobile terminal that Fig. 4 provides for the embodiment of the present invention.
Detailed description of the invention
Below by drawings and Examples, technical scheme is described in further detail.
Along with the development of mobile communication technology, commercially double-standby mobile teminal gradually occupies more and more
Ratio.And along with the development of LTE technology, communication network also will enter LTE epoch, therefore, LTE
The double-standby mobile teminal of pattern is increasingly becoming the focus of concern.
The schematic diagram of a kind of network attached method that Fig. 1 provides for the embodiment of the present invention.As it is shown in figure 1,
This network attached method comprises the following steps:
101, mobile terminal sends the first attachment request to moving exchanging center MSC, so that described MSC
CS territory under 2G/3G standard is attached in the first community of 2G/3G network；Described mobile terminal props up
Hold 2G/3G standard and LTE standard.
Wherein, mobile terminal is double standby terminals of LTE pattern, supports 2G/3G standard and LTE standard.
Preferably, in the present embodiment, mobile terminal can be to need to embed one to support 2G/3G standard the oneth SIM
Card and the terminal device of second SIM supporting LTE standard.In the present embodiment, pass through 2G/3G
Standard and LTE standard, mobile terminal can be the most standby in LTE network and 2G/3G network.Optional
Ground, can be in mobile terminal built-in support 2G/3G standard and the module of LTE standard.
Mobile terminal is after the start that powers on, and 2G/3G standard and LTE standard need respectively at corresponding network
In carry out network attachment.2G/3G standard MSC in 2G/3G network sends the first attachment request,
So that the CS territory under 2G/3G standard is attached in the first community of 2G/3G network by MSC.Specifically
Ground, 2G/3G standard is after MSC sends the first attachment request, and MSC is that the selection of 2G/3G standard is suitable
Community as the first community accompanying by the CS territory under 2G/3G standard.Such as, MSC can choose
The community that in community, signal strength signal intensity is maximum is as the first community.Further, the PS territory under 2G/3G standard
Can synchronously be attached in the first community.
102, described mobile terminal sends the second attachment request to mobile management entity MME, so that described
Packet switched ps domain under described LTE standard is attached in the second community of LTE network by MME.
Due to the initial stage developed at LTE, the CS territory service needed of LTE standard falls back to from LTE network
Performing in 2G/3G network, this just requires that LTE standard needs to possess circuit domain dropping (Circuit Switched
Fall Back, is called for short CSFB) function.In the present embodiment, carry out network attachment in 2G/3G standard
Meanwhile, LTE standard sends the second attachment request to MME, so that MME is by the PS of LTE standard
Territory is attached to LTE network.After receiving the second attachment request that mobile terminal sends, MME is LTE
The PS territory of standard selects suitable community as the second community accompanying by the PS territory under LTE standard.
It should be noted that not limiting by described sequence of movement between step 101 and step 102
System, step 101 and step 102 can use other orders or carry out simultaneously.
103, the first network information of the first community described in described acquisition for mobile terminal.
Specifically, after 2G/3G standard is attached in the first community, the first base station that the first community is corresponding
The first network information of the first community is sent to mobile terminal.Alternatively, the first community corresponding first
Base station, after 2G/3G standard is adhered to successfully, sends attachment success message to mobile terminal, mobile to notify
Terminal 2G/3G standard has completed network attachment.Wherein, in the attachment success message that this first base station sends
Carry the first network information of the first community.
Further, after receiving first network information, this first network information is stored by mobile terminal
In the memory unit.Wherein, first network information includes mark and the mark of the first base station of the first community.
104, described mobile terminal is according to described first network information first base corresponding to described first community
Transmission the 3rd attachment of standing is asked, so that described 3rd attachment request is sent to described by described first base station
MSC, and it is described first little to make described MSC be attached to by the circuit-switched CS domain under described LTE standard
Qu Zhong.
Owing to LTE standard includes PS territory and CS territory, mobile terminal not only needs under LTE standard
PS territory carries out network attachment, in addition it is also necessary to the CS territory under LTE standard is carried out network attachment.In this enforcement
In example, mobile terminal carries out network attachment to the PS territory under LTE standard and CS territory respectively.
In the present embodiment, mobile terminal gets first network information from memory cell, according to the first net
Network information sends the 3rd attachment request to the first base station, and the 3rd attachment request is sent to by the first base station
MSC.CS territory under LTE standard, after receiving the 3rd attachment request, can be attached to the by MSC
In one community.Specifically, at VLR Visitor Location Register, (Visitor Location Register is called for short MSC
VLR) positional information in CS territory under this LTE standard is stored.
The network attached method that the present embodiment provides, mobile terminal sends the first attachment request to MSC, with
Making MSC 2G/3G standard be attached in the first community of 2G/3G network, mobile terminal is to MME
Send the second attachment request, so that the PS territory under LTE standard is attached to the of LTE network by MME
In two communities, the first network information of the first community accompanying by acquisition for mobile terminal 2G/3G standard, root
The 3rd attachment request is sent according to the first base station that first network information is corresponding to the first community, so that the first base
Stand and the 3rd attachment request is sent to MSC, and make MSC that the CS territory under LTE standard to be attached to
In one community.The present embodiment mobile terminal includes 2G/3G standard and LTE standard, and the first community is for mobile
Terminal be 2G/3G standard select most preferably adhere to community, the CS territory under completing 2G/3G standard and LTE
After the network attachment in the PS territory under standard, mobile terminal can obtain the network information of the first community, according to
This network information sends to the first base station adheres to the CS territory under LTE standard in the first community for request
Attach Request message, the CS territory under LTE standard is attached directly in the first community, thus
Overcome and the CS territory under LTE standard directly cannot be attached to mobile terminal by prior art select
The problem of good attachment community.
The schematic diagram of the another kind of network attached method that Fig. 2 provides for the embodiment of the present invention.As in figure 2 it is shown,
The method comprises the following steps:
201, mobile terminal sends the first attachment request to MSC, so that MSC is by under 2G/3G standard
CS territory be attached in the first community of 2G/3G network.
202, mobile terminal sends the second attachment request to MME, so that MME is by under LTE standard
PS territory is attached in the second community of LTE network.
Step 201～202 be discussed in detail and can be found in the record of related content in above-described embodiment, the most not
Repeat again.
When 2G/3G standard is attached to the first community of 2G/3G network, the first base that the first community is corresponding
Standing and the first network information of the first community can be sent to mobile terminal, first network is believed by mobile terminal
Breath storage is in the memory unit.Similarly, when LTE standard is attached to the second community of LTE network, the
Second network information of the second community can be sent to mobile terminal by the second base station corresponding to two communities, moves
Second network information is stored in the memory unit by dynamic terminal.Wherein, the second base station can be in LTE standard
Under PS territory after LTE network is adhered to successfully, to mobile terminal send attachment success message, attached at this
And success message carries second network information.Second network information includes the mark and of the second community
The mark of two base stations.
203, first network information whether is stored during mobile terminal judges memory cell.
Specifically, first network information includes mark and the mark of the first base station of the first community.Mobile whole
End can judge whether store in memory cell according to the mark of the first community and the mark of the first base station
There is first network information.In the present embodiment, the mark of the first community and the mark of the first base station may indicate that
Go out whether this network information belongs to 2G/3G network.
When 2G/3G standard is after MSC sends the first attachment request, and MSC is it is possible that nothing in reality
2G/3G standard is attached to the situation in 2G/3G network by method, and now, 2G/3G standard is at 2G/3G net
The attachment failure of network.So 2G/3G standard is impossible to be attached in the first community of 2G/3G network,
Mobile terminal is also impossible to receive the first network information that the first base station corresponding to the first community sends.
When being adhered in 2G/3G network in the CS territory under LTE standard, mobile terminal needs to sentence
Whether disconnected memory cell stores the first network information of the first community accompanying by 2G/3G standard.
If mobile terminal judges that in memory cell, storage has first network information, performs step 204.
If mobile terminal is judged not stored first network information in memory cell, perform step 207.
204, mobile terminal is attached according to the first base station transmission the 3rd that first network information is corresponding to the first community
Request, so that the 3rd attachment request is sent to MSC by the first base station, and make MSC by LTE standard
Under CS territory be attached in the first community.
Step 204 can be found in the record of related content in step 104 in above-described embodiment, the most superfluous
State.
205, after the first community accompanying by CS territory under 2G/3G standard is changed, mobile terminal
Receive the attachment community change message that MSC is sent by the base station that the first community after change is corresponding, attached
Community change message first after indicating MSC that the CS territory under 2G/3G standard is adhered to change little
Qu Zhong.
In actual application, 2G/3G standard or LTE standard are after network attachment, it is possible that without net
The situation that network covers, now, 2G/3G standard or LTE standard need to re-start network attachment.This
In embodiment, illustrate as a example by 2G/3G standard, when mobile terminal detects that 2G/3G standard is current
When the signal of the first accompanying community is more weak, mobile terminal can send the first attachment to MSC again please
Asking, MSC, after receiving the first attachment request, selects the conduct of suitable community for 2G/3G standard again
The first accompanying community of 2G/3G standard, say, that the first community accompanying by 2G/3G standard
There occurs change.
Behind the first community after the CS territory under 2G/3G standard is attached to change, MSC can pass through
Base station corresponding to the first community after change sends to mobile terminal attachment community change message.Mobile terminal
According to attachment community change message, it is appreciated that the CS territory under 2G/3G standard is attached to change by MSC
After the first community in.
206, in the first community after the CS territory under LTE standard is attached to change by mobile terminal again.
The network information of the first community after change can be sent by base station corresponding to the first community after change
To mobile terminal.After the first community is changed, mobile terminal is receiving attachment community change message
After, can again the CS territory under LTE standard be re-attached in the first community after change.Specifically,
Mobile terminal gets the network information of the first community after change from memory cell, believes according to this network
Ceasing base station corresponding to the first community after change and send the 3rd attachment request, this base station please by the 3rd attachment
Asking and be sent to corresponding MSC, the CS territory under LTE standard is attached to first after changing by MSC again
In community.In the present embodiment, mobile terminal can by the CS territory under LTE standard always with 2G/3G system
Community accompanying by formula keeps synchronizing, so that the community accompanying by CS territory under LTE standard is all the time
For the community that mobile terminal is most preferably accompanying.
207, mobile terminal sends to MME and combines attachment request, so that MME is under LTE standard
CS derives in territory target MSC, and is sent to target MSC by combining attachment request, so that target MSC
From 2G/3G network, the Target cell for attachment is chosen for the CS territory under LTE standard.
When not storing first network information in step 203 judges memory cell, 2G/3G standard is described
Unsuccessful in the attachment of 2G/3G network of network, the CS territory under such LTE standard cannot be attached to 2G/3G
In community accompanying by standard.Herein, mobile terminal sends to MME combines attachment request, passes through MME
CS territory under LTE standard is attached in 2G/3G network.Specifically, receive combine attachment please
After asking, MME is that target MSC is derived in the CS territory under LTE standard, and sends out combining attachment request
Giving target MSC, target MSC carries out network attachment, target MSC to the CS territory under LTE standard
From 2G/3G network, a suitable community is chosen, as LTE standard for the CS territory under LTE standard
Under the Target cell that adheres in 2G/3G network of CS territory.
In the present embodiment, mobile terminal supports 2G/3G standard and LTE standard, and the first community is mobile terminal
Community is most preferably adhered to, the PS under completing 2G/3G standard and LTE standard for what 2G/3G standard selected
After the network attachment in territory, mobile terminal can obtain the network information of the first community, according to this network information
The attachment request adhering in the first community by the CS territory under LTE standard for request is sent to the first base station
Message, to be attached directly in the first community in the CS territory under LTE standard, thus overcomes existing
What the CS territory under LTE standard cannot directly be attached in technology mobile terminal selection most preferably adheres to community
Problem.And after the community accompanying by 2G/3G standard in the terminal is changed, mobile whole
CS under LTE standard also can be correspondingly re-attached in the community after change by end, it is achieved thereby that
CS territory under LTE standard is attached in the optimal attachment community that mobile terminal selects all the time.
The schematic diagram of the another kind of network attached method that Fig. 3 provides for the embodiment of the present invention.As it is shown on figure 3,
The method comprises the following steps:
301, mobile terminal sends the first attachment request to MSC, so that MSC is by under 2G/3G standard
CS territory be attached in the first community of 2G/3G network.
302, mobile terminal sends the second attachment request to MME, so that MME is by under LTE standard
Packet switched ps domain is attached in the second community of LTE network.
303, the first network information of acquisition for mobile terminal the first community.
304, mobile terminal is attached according to the first base station transmission the 3rd that first network information is corresponding to the first community
Request, so that the 3rd attachment request is sent to MSC by the first base station, and make MSC by LTE standard
Under CS territory be attached in the first community.
Step 301～step 304 can be found in related content in step 101 in above-described embodiment～step 104
Recording, here is omitted.It should be noted that not by being retouched between step 301 and step 302
The restriction of the sequence of movement stated, step 301 and step 302 can use other orders or carry out simultaneously.
305, mobile terminal receives the circuit domain dropping CSFB instruction that MME sends.
After 2G/3G standard and LTE standard are respectively completed network attachment, when being in LTE network
When MME receives CS service request, illustrate that LTE standard needs to carry out CS territory business.In this enforcement
In example, LTE standard is in LTE network, owing to the CS territory service needed of LTE network falls back to 2G/3G
Carrying out in network, MME will send to mobile terminal, for instruction, CS territory business be fallen back to 2G/3G
CSFB instruction in network.Alternatively, mobile terminal can send CS as calling party to MME
Service request, or mobile terminal can be received calling party sent by MSC as callee, MME
CS service request.
306, mobile terminal is by the CS domain dropping under LTE standard to the first community.
In the present embodiment, owing to the CS territory under LTE standard is attached to 2G/3G system by mobile terminal all the time
In community accompanying by formula, therefore, when receiving falling instruction, mobile terminal can be directly by LTE
CS domain dropping under standard is in the community accompanying by 2G/3G standard, to carry out continuing of CS territory business,
CS territory under so mobile terminal is not necessary for LTE standard re-searches for the Target cell that can fall after rise,
Solve existing CSFB fall after rise during mobile terminal need re-search for obtain fall after rise Target cell
And cause the problem that CS territory service call time delay is longer, decrease exhaling of the CS territory business under LTE network
It is time delay, improves the ageing of CS territory business continuing.
The structural representation of a kind of mobile terminal that Fig. 4 provides for the embodiment of the present invention.As shown in Figure 4,
This mobile terminal includes: first attachable module the 41, second attachable module 42, acquisition module 43 and the 3rd
Attachable module 44.
Wherein, mobile terminal is double standby terminals of LTE pattern, supports 2G/3G standard 45 and LTE
Standard 46.Preferably, in the present embodiment, corresponding one of 2G/3G standard 45 supports 2G/3G standard first
SIM, corresponding second SIM supporting LTE standard of LTE standard 46.By 2G/3G system
Formula 45 and LTE standard 46, mobile terminal is the most standby in LTE network and 2G/3G network.Optional
Ground, can be in the module 46 of mobile terminal built-in support 2G/3G standard 45 and LTE standard.
Mobile terminal is after the start that powers on, and 2G/3G standard 45 and LTE standard 46 needs respectively in correspondence
Network in carry out network attachment.2G/3G standard 45 passes through the first attachable module 41 to 2G/3G network
In MSC send first attachment request so that the CS territory under 2G/3G standard 45 is attached to by MSC
In 2G/3G network.Specifically, the first attachable module 41 to MSC send first attachment request after, MSC
Suitable community is selected, as the CS under 2G/3G standard 45 for the CS territory under 2G/3G standard 45
First community of territory attachment.Such as, MSC can choose the maximum community of signal strength signal intensity in community as the
One community.Further, the PS territory under 2G/3G standard 45 can synchronously be attached in the first community.
Due to the initial stage developed at LTE, the CS territory service needed under LTE standard 46 is returned from LTE network
Falling in 2G/3G network and perform, this just requires that LTE standard 46 needs to possess CSFB function.This reality
Executing in example, while 2G/3G standard 45 carries out network attachment, LTE standard 46 is by the second attachment
Module 42 sends the second attachment request to MME, so that MME is by attached for the PS territory under LTE standard 46
In LTE network.After receiving the second attachment request that the second attachable module 42 sends, MME is
PS territory under LTE standard 46 selects suitable community as the accompanying by the PS territory under LTE standard
Two communities.
After 2G/3G standard 45 in mobile terminal is attached to the first community, the first community corresponding first
The acquisition module 43 that the first network information of the first community is sent in mobile terminal by base station.Alternatively,
After 2G/3G standard 45 is adhered to successfully, the first base station corresponding to the first community sends to acquisition module 43
Attachment success message, to notify that mobile terminal 2G/3G standard has completed network attachment.Wherein, this first
The attachment success message that base station sends carries the first network information of the first community.Wherein, the first net
Network information includes mark and the mark of the first base station of the first community.
Alternatively, after the PS territory under LTE standard 46 is attached to the second community, the second community is corresponding
Second network information of the second community is sent to acquisition module 43 by the second base station.Specifically, in LTE system
PS territory under formula 46 is after LTE network is adhered to successfully, and the second base station can send to acquisition module 43
Attachment success message, carries second network information in this attachment success message.Wherein, the second network
Information includes mark and the mark of the second base station of the second community.
After receiving first network information and second network information, acquisition module 43 is by the first and second networks
Information stores in the memory unit.
Owing to LTE standard 46 includes PS territory and CS territory, therefore, mobile terminal not only needs LTE
PS territory under standard 46 carries out network attachment, in addition it is also necessary to the CS territory under LTE standard 46 is carried out network
Attachment.In the present embodiment, the PS territory under LTE standard 46 and CS territory are carried out by mobile terminal respectively
Network attachment.
3rd attachable module 44 can get first network information from memory cell, according to first network
Information sends the 3rd attachment request to the first base station, and the 3rd attachment request is sent to by the first base station
MSC.CS territory under LTE standard, after receiving the 3rd attachment request, can be attached to the by MSC
In one community.Specifically, the positional information in MSC CS territory under VLR stores this LTE standard.
Alternatively, the one of the 3rd attachable module 44 realizes structure and includes: judging unit 441 and attachment are single
Unit 442.
Specifically, first network information includes mark and the mark of the first base station of the first community.This enforcement
In example, the mark of the first community and the mark of the first base station can indicate that whether this network information belongs to
2G/3G network.
In reality when 2G/3G standard 45 to MSC send first attachment request after, MSC it is possible that
2G/3G standard 45 cannot be attached to the situation in 2G/3G network, now, 2G/3G standard 45 exists
The attachment failure of 2G/3G network.So 2G/3G standard 45 is impossible to be attached to 2G/3G network
In first community, mobile terminal is also impossible to receive that the first base station corresponding to the first community send the
One network information.
When being adhered in 2G/3G network in the CS territory under LTE standard, mobile terminal judges to deposit
Whether storage unit stores the first network information of the first community accompanying by 2G/3G standard.Specifically
Judging unit 441 can judge memory cell according to the mark of the first community and the mark of the first base station
In whether stored first network information.If it is determined that unit 441 judges in memory cell that storage has the
One network information, adhesion unit 442 is sent out according to the first base station that first network information is corresponding to the first community
Send the 3rd attachment request, so that the 3rd attachment request is sent to MSC by the first base station, and make MSC incite somebody to action
CS territory under LTE standard is attached in the first community.
If it is determined that unit 441 is judged not stored first network information in memory cell, 2G/3G is described
The network attachment of standard 45 is unsuccessful, and the CS territory under such LTE standard 46 cannot be attached to 2G/3G
In community accompanying by standard 45.Herein, adhesion unit 442 sends to MME combines attachment request,
By MME, the CS territory under LTE standard 46 is attached in 2G/3G network.
Specifically, receive combine attachment request after, MME is that the CS territory under LTE standard 46 pushes away
Deriving target MSC, and be sent to target MSC by combining attachment request, target MSC is to LTE standard
CS territory under 46 carries out network attachment, and target MSC is that the CS territory under LTE standard 46 is from 2G/3G
Network is chosen a suitable community, in CS territory is attached to 2G/3G network under LTE standard
Target cell.
The mobile terminal that the present embodiment provides, can send the first attachment request to MSC, so that MSC
2G/3G standard 45 is attached in 2G/3G network, sends the second attachment request to MME simultaneously,
So that the PS territory under LTE standard 46 is adhered in the lte networks by MME, getting the first community
The network information, according to this network information corresponding to the first community first base station send the 3rd attachment request,
So that the 3rd attachment request is sent to MSC by the first base station, and make MSC by under LTE standard 46
CS territory is attached in the first community.
In the present embodiment the first community be mobile terminal be 2G/3G standard 45 select most preferably adhere to community,
After the network attachment in the PS territory under completing 2G/3G standard 45 and LTE standard 46, mobile terminal can
To obtain the network information of the first community accompanying by 2G/3G standard 45, according to this network information to the
One base station sends the attachment request adhering in the first community by the CS territory under LTE standard 46 for request and disappears
Breath, to be attached directly in the first community in the CS territory under LTE standard 46, thus overcomes existing
The optimal attachment that CS territory under LTE standard 46 cannot directly be attached in technology mobile terminal selection is little
The problem in district.
Further, the mobile terminal that the present embodiment provides also includes: more new module 47 and falling module
48。
In actual application, 2G/3G standard 45 or LTE standard 46, after network attachment, may go out
Now without the situation of the network coverage, now, 2G/3G standard 45 or LTE standard 46 needs to re-start
Network attachment.
In the present embodiment, illustrate as a example by 2G/3G standard 45, when mobile terminal detects 2G/3G
When the signal of current the first accompanying community of standard 45 is more weak, 2G/3G standard 45 can be by updating
Module 47 sends the first attachment request to MSC again, and MSC is after receiving the first attachment request, heavy
Newly for 2G/3G standard 45 select suitable community as the first community accompanying by 2G/3G standard 45,
It is to say, the first community accompanying by 2G/3G standard 45 there occurs change.
Behind the first community after the CS territory under 2G/3G standard 45 is attached to change, MSC is permissible
The base station corresponding by the first community after change sends attachment community change message to more new module 47, more
New module 47 changes message according to this attachment community, is appreciated that MSC is by under 2G/3G standard 45
CS territory is attached in the first community after change.
The network information of the first community after change can be sent to by base station corresponding to the first community after change
Acquisition module 43.After the first community is changed, the 3rd attachable module 44 is connected with more new module 47,
After more new module 47 receives attachment community change message, the 3rd attachable module 44 can be again by LTE
CS territory under standard 46 is re-attached in the first community after change.
Specifically, the network of the first community after the 3rd attachable module 44 gets change from memory cell
Information, sends the 3rd attachment request according to the base station that this network information the first community after change is corresponding,
3rd attachment request is sent to corresponding MSC, MSC again by under LTE standard 46 by this base station
CS territory is attached in the first community after change.
In the present embodiment, after the community accompanying by 2G/3G standard 45 is changed, mobile terminal is also
Correspondingly the CS under LTE standard 46 can be re-attached in the community after change so that LTE system
CS territory under formula keeps Tong Bu with the community accompanying by 2G/3G standard 45 always, it is achieved thereby that LTE
CS territory under standard 46 is attached in the optimal attachment community that mobile terminal selects all the time.
After 2G/3G standard 45 and LTE standard 46 is respectively completed network attachment, when being in LTE network
In MME when receiving CS service request, illustrate that LTE standard 46 needs to carry out CS territory business.
LTE standard 46 is in LTE network in the present embodiment, owing to the CS territory business of LTE network needs
Carrying out in 2G/3G network to be fallen back to, MME will send to the falling module 48 in mobile terminal and use
CSFB CS territory business fallen back in 2G/3G network in instruction indicates.Alternatively, mobile terminal
CS service request can be sent 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.
Owing to the CS territory under LTE standard 46 is attached in the first community accompanying by 2G/3G standard 45,
Therefore, when receiving falling instruction, falling module 48 after rise can be directly by the CS under LTE standard 46
Domain dropping is in the first community accompanying by 2G/3G standard 45, to carry out continuing of CS territory business.
In the present embodiment, during network attachment, by the CS territory under LTE standard is attached to
Community accompanying by 2G/3G standard, the CS territory that such mobile terminal is not necessary under LTE standard is again
The Target cell that search can fall after rise, solve existing CSFB fall after rise during mobile terminal need weight
New search obtains the Target cell fallen after rise and causes the problem that CS territory service call time delay is longer, decreases
The call delay of the CS territory business under LTE network, improves the ageing of CS territory business continuing.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, rather than right
It limits；Although the present invention being described in detail with reference to foregoing embodiments, this area common
Skilled artisans appreciate that the technical scheme described in foregoing embodiments still can be modified by it,
Or the most some or all of technical characteristic is carried out equivalent；And these amendments or replacement, and
The essence not making appropriate technical solution departs from the scope of various embodiments of the present invention technical scheme.
Claims (2)
1. a network attached method, it is characterised in that including:
Mobile terminal sends the first attachment request to moving exchanging center MSC, so that described MSC will
Circuit-switched CS domain under 2G/3G standard is attached in the first community of 2G/3G network；Described movement
Terminal supports 2G/3G standard and LTE standard；
Described mobile terminal sends the second attachment request to mobile management entity MME, so that described MME
Packet switched ps domain under described LTE standard is attached in the second community of LTE network；
The first network information of the first community described in described acquisition for mobile terminal；
Described mobile terminal is sent out according to the first base station that described first network information is corresponding to described first community
Send the 3rd attachment request, so that described 3rd attachment request is sent to described MSC by described first base station,
And make described MSC be attached in described first community in the CS territory under described LTE standard；
It is attached that described first base station corresponding to described first community according to described first network information sends the 3rd
Request, so that described 3rd attachment request is sent to described MSC by described first base station, and make described
CS territory under described LTE standard is attached to described first community and includes by MSC:
Described mobile terminal judges whether stored described first network information in memory cell；
If it is judged that be yes, described mobile terminal according to described first network information to described first base
The described 3rd attachment request of transmission of standing, so that described 3rd attachment request is sent to institute by described first base station
State MSC, and make described MSC be attached in described first community in the CS territory under described LTE standard；
Also include:
If it is judged that be no, described mobile terminal sends to described MME combines attachment request, with
Making described MME is that target MSC is derived, to described target MSC in the CS territory under described LTE standard
Send and described combine attachment request, and make described target MSC be CS territory under described LTE standard from
2G/3G network is chosen the Target cell for attachment；
Described mobile terminal is sent out according to the first base station that described first network information is corresponding to described first community
Send the 3rd attachment request, so that described 3rd attachment request is sent to described MSC by described first base station,
And after making described MSC be attached in described first community in the CS territory under described LTE standard, also wrap
Include:
After described first community accompanying by CS territory under described 2G/3G standard is changed, described
It is little that mobile terminal receives the attachment that MSC sent by base station corresponding to the first community after described change
District's change message, described attachment community change message is used for indicating described MSC by described 2G/3G standard
Under CS territory be attached in the first community after described change；
CS territory under described LTE standard is attached to after described change first by described mobile terminal again
In community；
Described mobile terminal is sent out according to the first base station that described first network information is corresponding to described first community
Send the 3rd attachment request, so that described 3rd attachment request is sent to described MSC by described first base station,
And after making described MSC be attached in described first community in the CS territory under described LTE standard, also wrap
Include:
Described mobile terminal receives the circuit domain dropping CSFB instruction that described MME sends；
Described mobile terminal is by the CS domain dropping of described LTE standard to described first community.
2. a mobile terminal, it is characterised in that including:
First attachable module, for sending the first attachment request to moving exchanging center MSC, so that described
Circuit-switched CS domain under 2G/3G standard is attached in the first community of 2G/3G network by MSC；
Second attachable module, sends the second attachment for described mobile terminal to mobile management entity MME
Request, so that the packet switched ps domain under LTE standard is attached to the of LTE network by described MME
In two communities；
Acquisition module, for obtaining the first network information of described first community；
3rd attachable module, for according to described first network information corresponding to described first community first
Base station sends the 3rd attachment request, so that described 3rd attachment request is sent to described by described first base station
MSC, and make described MSC be attached in described first community in the CS territory under described LTE standard；
Wherein, described mobile terminal supports described 2G/3G standard and described LTE standard；
Described 3rd attachable module includes:
Judging unit, is used for judging whether stored described first network information in memory cell；
At described judging unit, adhesion unit, for judging that described memory cell storage has described first net
During network information, send described 3rd attachment according to described first network information to described first base station and ask,
So that described 3rd attachment request is sent to described MSC by described first base station, and described MSC is made to incite somebody to action
CS territory under described LTE standard is attached in described first community；
Described adhesion unit, is additionally operable to judge that described memory cell does not stores at described judging unit described
During first network information, send to described MME and combine attachment request, so that described MME is described
Target MSC is derived in CS territory under LTE standard, to described target MSC send described combine attachment please
Ask, and make the CS territory under the described LTE standard of described target MSC position choose use from 2G/3G network
Target cell in attachment；
Also include:
More new module, sends out for described first community accompanying by CS territory under described 2G/3G standard
After sending change, receive the attachment that MSC sent by base station corresponding to the first community after described change little
District's change message, described attachment community change message is used for indicating described MSC by described 2G/3G standard
Under CS territory be attached in the first community after described change, and again by under described LTE standard
CS territory is attached to after described change in the first community；
Also include:
Fall module after rise, for receiving the circuit domain dropping CSFB instruction that described MME sends, and
By in the CS domain dropping under described LTE standard to described first community.
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| 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 |
| 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 |
| CN105657787B (en) * | 2016-01-22 | 2018-09-04 | 北京小米移动软件有限公司 | The selection method and device of adhering mode |
| CN110167090B (en) * | 2019-07-04 | 2021-12-07 | 中国联合网络通信集团有限公司 | Multi-mode single-card combined attachment method and device |
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| CN102301794A (en) * | 2008-11-10 | 2011-12-28 | 阿尔卡特朗讯公司 | Support Of Cs Domain Services Over A Packet Only Mobile System |
| CN102497629A (en) * | 2011-12-13 | 2012-06-13 | 华为终端有限公司 | Method for triggering co-registration of long term evolution (LTE) single-card dual-standby multimode terminal and terminal |
| CN102893673A (en) * | 2010-04-12 | 2013-01-23 | 高通股份有限公司 | System, apparatus, and method to enable domain selection in multimode device |
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| JP5478455B2 (en) * | 2010-10-07 | 2014-04-23 | 株式会社Ｎｔｔドコモ | Network apparatus and mobile station control method |
| KR101311526B1 (en) * | 2011-08-01 | 2013-09-25 | 주식회사 케이티 | Method for selecting cell for cs fallback service |
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| CN102301794A (en) * | 2008-11-10 | 2011-12-28 | 阿尔卡特朗讯公司 | Support Of Cs Domain Services Over A Packet Only Mobile System |
| CN102893673A (en) * | 2010-04-12 | 2013-01-23 | 高通股份有限公司 | System, apparatus, and method to enable domain selection in multimode device |
| CN102497629A (en) * | 2011-12-13 | 2012-06-13 | 华为终端有限公司 | Method for triggering co-registration of long term evolution (LTE) single-card dual-standby multimode terminal and terminal |
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