CN104244215A - Network attaching method and MME (mobile management entity) of mobile terminal - Google Patents
Network attaching method and MME (mobile management entity) of mobile terminal Download PDFInfo
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- CN104244215A CN104244215A CN201410509356.8A CN201410509356A CN104244215A CN 104244215 A CN104244215 A CN 104244215A CN 201410509356 A CN201410509356 A CN 201410509356A CN 104244215 A CN104244215 A CN 104244215A
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Abstract
The invention provides a network attaching method and an MME (mobile management entity) of a mobile terminal. The method includes: the MME judges whether the mobile terminal is switched from an original base station in an LTE network to a first base station to perform attaching or not, if so, all second base stations of the 2G/3G network in the coverage of the first base station, the MME selects one of the second base stations as a target base station, and if the MSC which the target base station belongs to is not the MSC selected in the 2G/3G network in a previous moment, the MME attaches the mobile terminal to the target base station. The method has the advantages that when the LTE network which the mobile terminal is attached to changes, the MME can switch the mobile terminal from the currently-attached 2G/3G network base station to the 2G/3G network base station in the coverage of the LTE network, so that when the mobile terminal needs CS domain fallback, the mobile terminal can smoothly falls back to the switched 2G/3G network base station.
Description
Technical field
The embodiment of the present invention relates to communication technical field, particularly relates to a kind of network attached method and MME of mobile terminal.
Background technology
Long Term Evolution (Long Term Evolution, be called for short LTE) be the 3rd generation the Long Term Evolution of universal mobile telecommunications system technology dominated of partner program.LTE network is one and has two-forty, low time delay, the multiple access technology of support, mobile communications network based on full packetizing.At the initial stage of deployment of LTE network, LTE network is mainly used in providing broadband data service to terminal, when terminal needs to carry out speech business, terminal needs to fall back to the second generation/third generation (Second Generation/3rd-generation, be called for short 2G/3G) in network, so circuit domain dropping (Circuit Switched Fallback is called for short CSFB) arises at the historic moment, it is the cambic voice solution of one that most operator is selected.
Packet switching (Packet Switched is performed in the lte networks when the terminal under LTE standard is resident, be called for short PS) business, there is initiation circuit switching (Circuit Switched, be called for short CS) service request initiate time, the terminal under LTE standard will fall back in 2G/3G network and process CS business.At present because the CS territory of terminal can be attached in 2G/3G network by combined registering mode by the terminal under LTE standard, receive once terminal or initiate CS business, directly can fall back in the 2G/3G network registered in combined registering process, be completed the CS territory business of terminal by 2G/3G network.
But, when the terminal under LTE standard is in mobile status, may be occurred upgrading in time the phenomenon of location information data of terminal, when terminal attempts to fall back in 2G/3G network, due to the change in location of terminal, this terminal may not be accompanying in a upper moment registration process 2G/3G network coverage in, such terminal just cannot fall after rise.
Summary of the invention
The invention provides a kind of network attached method and MME of mobile terminal, when being in mobile status for the terminal solved under existing LTE standard, when beaming back request to the base station in 2G/3G network, within the scope of ownership due to the MSC of this base station not when a upper moment, MME can not upgrade in time to user data, cause falling after rise unsuccessfully, increase the problem of calling establishment time delay.
To achieve these goals, the network attached method of a kind of mobile terminal provided by the invention, comprising:
Mobile management entity MME judges whether mobile terminal is switched to the first base station from the origination base station LTE network and adheres to;
If judged result is, described MME obtains the second base station of all second generations/third generation 2G/3G network in its coverage of described first base station;
Described MME chooses second base station as target BS from the second all base stations;
MSC selected in 2G/3G network when described MME judges whether the moving exchanging center MSC that described target BS is subordinate to is a moment on described mobile terminal;
If judged result is no, described mobile terminal is attached in described target BS by described MME.
In order to realize above-mentioned target, a kind of MME provided by the invention, comprising:
First judge module, for judging whether mobile terminal is switched to the first base station from the origination base station LTE network and adheres to;
Acquisition module, for when the judged result of described first judge module is for being, obtains the second base station of all second generations/third generation 2G/3G network in its coverage of described first base station;
Choose module, for choosing second base station as target BS from the second all base stations;
Second judge module, MSC selected in 2G/3G network during for judging whether the moving exchanging center MSC that described target BS is subordinate to is a moment on described mobile terminal;
Attachable module, for being no in the judged result of described second judge module, is attached to described mobile terminal in described target BS.
The network attached method of mobile terminal provided by the invention and MME, MME judge mobile terminal whether from LTE network origination base station be switched to the first base station and adhere to, after judging switching, obtain the second base station of all 2G/3G networks in its coverage of the first base station, MME chooses one as target BS from the second all base stations, if during selected in 2G/3G network during a moment on the MSC immobile terminal that target BS is subordinate to MSC, mobile terminal is attached in target BS by MME.In the moving process that the present invention moves at mobile terminal, when the LTE network base station accompanying by mobile terminal changes, MME can by mobile terminal from the 2G/3G network base station that the 2G/3G network base station of current attachment is switched in above-mentioned LTE network base station range, although the position of mobile terminal changes like this, but when mobile terminal needs to carry out CS domain dropping, under the 2G/3G network base station after mobile terminal successfully can fall back to switching, carry out business continuing.
Accompanying drawing explanation
The flow chart of the network attached method of a kind of mobile terminal that Fig. 1 provides for the embodiment of the present invention one;
The flow chart of the network attached method of a kind of mobile terminal that Fig. 2 provides for the embodiment of the present invention two;
The structural representation of a kind of MME that Fig. 3 provides for the embodiment of the present invention three;
The structural representation of a kind of attachable module that Fig. 4 provides for the embodiment of the present invention three.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described.
Embodiment one
The flow chart of the network attached method of a kind of mobile terminal that Fig. 1 provides for the embodiment of the present invention one.As shown in Figure 1, the network attached method of this mobile terminal comprises the following steps:
101, mobile management entity MME judges whether mobile terminal is switched to the first base station from the origination base station LTE network and adheres to.
In the present embodiment, mobile terminal is the LTE terminal possessing CSFB function, when start is adhered to, CS territory can be attached to by the mode of combined registering in an initial base station under 2G/3G network by mobile terminal, is attached in PS territory in an initial base station under LTE network.
When mobile terminal is in mobile status, the position of mobile terminal can constantly change, when moving to the edge of the initial base station under accompanying LTE network, mobile terminal may will re-start measurement, selects a suitable base station to carry out transfer of data from LTE network.Correspondingly, in the moving process of mobile terminal, mobile terminal may need from LTE network, constantly again choose base station and adhere to.
After mobile terminal is switched to another LTE network base station from the base station of a LTE network, mobile terminal can send identification information to mobile management entity (Mobility Management Entity is called for short MME).In the present embodiment, another LTE network base station is called the first base station.
MME judges whether mobile terminal is switched to the first base station from the origination base station LTE network and adheres to.In reality after mobile terminal carries out being switched to the first base station, MME can receive the identification information that the first base station sends, in the present embodiment, by whether receiving above-mentioned identification information from the first base station, MME can judge whether mobile terminal is switched to the first base station.If judged result is yes, perform step 102; Otherwise perform step 103.
Wherein, the identification information that MME receives comprises the mark of this first base station and is switched to the mark of the mobile terminal in this first base station.
Alternatively, after the identification information receiving the first base station transmission, MME can learn that the base station under the LTE network corresponding to current time mobile terminal is the first base station.In practical application, the mark of the base station under the LTE network on storing in MME corresponding to this mobile terminal of a moment, such MME can learn that whether the first base station was the base station under the corresponding LTE network in a upper moment.If judged result is no, illustrates in the coverage of the base station under the LTE network that current time mobile terminal has not been in accompanying by the moment, under current time mobile terminal is attached to the first base station, perform step 102; If judged result is no, illustrate in the coverage of the base station under the LTE network that current time mobile terminal is still in accompanying by the moment, that is mobile terminal does not reselect the base station under the LTE network that will adhere to, and performs step 103.
102, MME obtains the second base station of all 2G/3G networks in its coverage of the first base station.
Particularly, after judging that the base station under the LTE network accompanying by mobile terminal switches, MME indicates the second all base station in its coverage of the first base station search, such as, MME can send to the first base station the request of acquisition, and this acquisition request is used for all second base stations of acquisition request first base station range, and the first base station is after receiving the request of acquisition, the second base station in its coverage will be searched for, to obtain the second base station in its coverage.
Alternatively, can be previously stored with all second base stations in its coverage in the first base station, now MME directly can get each second base station in its coverage from the first base station.
Information interaction is carried out by eat dishes without rice or wine channel and the second corresponding base station in first base station, obtains the facility information of the second base station.Further, MME receives the facility information relevant to each second base station of the first base station feedback.Wherein, facility information comprises the cell information of the device identification of the second base station, geographical location information and the second base station range.
103, MME judges that described mobile terminal adheres to the need of again choosing base station from 2G/3G network.
Mobile terminal can constantly be measured the base station under the base station under accompanying LTE network and accompanying 2G/3G network, and measurement result is reported to MME, thus MME can judge according to the result measured whether current accompanying base station meets the business need of mobile terminal.
When base station can not meet the business demand of mobile terminal under accompanying 2G/3G network, then judge that mobile terminal needs again from 2G/3G network, to choose base station and adheres to, perform step 104; Otherwise perform step 109.
104, MME obtains described second base station of all 2G/3G networks in its coverage of described origination base station.
MME instruction origination base station searches for the second all base station in its coverage, such as, MME can send to origination base station the request of acquisition, this acquisition request is used for all second base stations of acquisition request origination base station coverage, origination base station is after receiving the request of acquisition, the second base station in its coverage will be searched for, to obtain the second base station in its coverage.Alternatively, can be previously stored with all second base stations in its coverage in origination base station, now MME directly can get each second base station in its coverage from origination base station.
Correspondingly, origination base station carries out information interaction by eat dishes without rice or wine channel and the second corresponding base station, obtains the facility information of the second base station.Further, MME receives the facility information relevant to each second base station of origination base station feedback.Wherein, facility information comprises the cell information of the device identification of the second base station, geographical location information and the second base station range.
105, MME chooses second base station as target BS from the second all base stations.
After the facility information receiving the second all base stations, MME can choose the target BS fallen after rise as mobile terminal second base station from the second all base stations.
When all second base stations are the base stations under the 2G/3G network in the first base station range, MME obtains the geographical location information of the first base station, and according to the positional information of this first base station and the geographical location information of each second base station, determine from all second base stations distance the first base station nearest as target BS.
When all second base stations are the base stations under the 2G/3G network in origination base station coverage, MME obtains the geographical location information of origination base station, and according to the positional information of this origination base station and the geographical location information of each second base station, determine from all second base stations distance origination base station nearest as target BS.
106, MSC selected in 2G/3G network when MME judges whether the MSC that target BS is subordinate to is a moment on mobile terminal.
After determining target BS, mobile switching centre (the MobileSwitching Center selected by 2G/3G network when MME can obtain a upper moment according to the mark of this mobile terminal and corresponding to this mobile terminal, be called for short MSC), and can get according to the mark of target BS the MSC that target BS is subordinate to, MSC selected in 2G/3G network when then judging whether the MSC that target BS is subordinate to is a moment on mobile terminal.If judged result is no, in the coverage of MSC selected in 2G/3G network when illustrating that target BS that mobile terminal current time is corresponding is not in a moment, perform step 107; If judged result is yes, MSC selected in 2G/3G network when the MSC illustrating accompanying by the target BS that mobile terminal current time is corresponding was exactly a upper moment, performs step 108.
107, mobile terminal is attached in target BS by MME.
Particularly, the attachment request that MME mobile terminal receive is forwarded by the first base station, attachment request is used for request and is attached in target BS.Further, when MME in step 101 judges that mobile terminal does not carry out the switching of base station in the lte networks, when namely mobile terminal still stops in origination base station in the lte networks, the attachment request that MME will be received mobile terminal and forwarded by origination base station.
The MSC that the attachment request forward received is subordinate to target BS by MME, to inquire whether this MSC target BS allows mobile terminal to adhere to.After target BS allows mobile terminal attachment, MSC can to MME feedback attachment response.After receiving attachment response, MME can send the Data Update instruction of mobile terminal to MSC, and with the more new data making MSC obtain mobile terminal, MME receives the Data Update response that described MSC feeds back.MME sets up the corresponding relation between this MSC, like this when mobile terminal needs CS domain dropping, just can fall back in target BS and carry out business continuing.
108, mobile terminal is switched in target BS and adheres to by MME.
During selected in 2G/3G network when the MSC judging that target BS is subordinate to was a upper moment in the present embodiment MSC, MSC selected in 2G/3G network during a upper moment was called original MSC herein.The original MSC that MME is subordinate to target BS sends handover request, to inquire whether this original MSC allows mobile terminal to be switched to target BS and adhere to.After the attachment of permission mobile terminal, original MSC can to MME feedback attachment response.After receiving attachment response, mobile terminal can be attached in target BS by MME.Because MSC that target BS is now be subordinate to is that corresponding relation between original MSC, MME and this original MSC can't change.
109, process ends.
The network attached method of the mobile terminal provided in the present embodiment, MME judge mobile terminal whether from LTE network origination base station be switched to the first base station and adhere to, after judging switching, obtain the second base station of all 2G/3G networks in its coverage of the first base station, MME chooses one as target BS from the second all base stations, if during selected in 2G/3G network during a moment on the MSC immobile terminal that target BS is subordinate to MSC, mobile terminal is attached in target BS by MME.In the present embodiment in the moving process of mobile terminal, after the LTE network base station accompanying by mobile terminal changes, MME can by mobile terminal from the 2G/3G network base station that the 2G/3G network base station of current attachment is switched in above-mentioned LTE network base station range, like this when the position of mobile terminal changes, when needs carry out CS domain dropping, under the 2G/3G network base station after mobile terminal successfully can fall back to switching, carry out business continuing.
Embodiment two
The flow chart of the network attached method of a kind of mobile terminal that Fig. 2 provides for the embodiment of the present invention two.As shown in Figure 2, the network attached method of this mobile terminal comprises the following steps:
201, user equipment (UE) is measured the base station under LTE network, selects suitable base station to carry out transfer of data.
Particularly, as subscriber equipment (User Equipment, be called for short UE) be in mobile in when causing the base station under accompanying LTE network can not meet the business demand of UE, UE can re-start measurement to the base station under LTE network, carries out transfer of data to select suitable base station (eNodeB) in the lte networks.In the present embodiment, UE is the mobile terminal in above-described embodiment, and the suitable eNodeB selected in the lte networks is the first base station in above-described embodiment one.
202, UE reports identification information to MME.
Wherein, identification information comprises the mark of UE and the mark with the eNodeB corresponding to this UE.
203, MME obtains the facility information of the second base station of all 2G/3G networks in eNodeB coverage.
MME indicates second base station of eNodeB to all 2G/3G networks in its coverage to search for.Alternatively, store all second base stations in its coverage in the enodeb, such MME directly can be stored in all second base stations in its coverage this eNodeB from eNodeB acquisition.
Further, eNodeB carries out information interaction by eat dishes without rice or wine channel and the second corresponding base station, obtains the facility information of the second base station.Wherein, facility information comprises the cell information of the device identification of the second base station, geographical location information and the second base station range.Further, MME receives the facility information relevant to each second base station of the first base station feedback.
204, MME chooses second base station as target BS from the second all base stations.
Detailed process see the record of related content in above-described embodiment 1, can repeat no more herein.
205, MSC selected in 2G/3G network when MME judges that whether MSC that target BS is subordinate to was UE upper moment.
If judged result is no, perform step 206, if judged result is yes, perform step 211.Detailed process see the record of related content in above-described embodiment 1, can repeat no more herein.
206, MME will adhere to the MSC asking to send to target BS to be subordinate to.
Wherein, described attachment request is used for asking UE to be attached in target BS.
Whether MME receives the attachment request that UE is forwarded by eNodeB, and by the MSC that this attachment request sends to target BS to be subordinate to, be attached in target BS by UE to inquire.
207, MME is received in the attachment response sent when be subordinate to MSC allows UE to be attached to target BS.
After be subordinate to MSC receives attachment request, can send this attachment request to target BS, when target BS allows UE attachment, target BS can send attachment response to be subordinate to MSC, and this attachment response is transmitted to MME by this MSC.
208, MME sends the Data Update instruction of UE to be subordinate to MSC, with the more new data making be subordinate to MSC obtain UE.
After receiving attachment response, MME learns and allows UE to be attached in target BS, and such MME just can send the Data Update instruction of UE to be subordinate to MSC.The MSC be subordinate to is after receiving Data Update instruction, and this MSC can get the data message of UE from attaching position register (Home Location Register is called for short HLR), carry out Data Update operation.Simultaneously HLR can the moment upper to UE time MSC transmission data deletion action selected in 2G/3G network, attachment removal is carried out to UE.
209, the Data Update response that the MSC that MME receiving target base station is subordinate to sends.
210, the corresponding relation between the MSC that MME sets up and target BS is subordinate to.
MME sets up the corresponding relation between this MSC, like this when mobile terminal needs CS domain dropping, just can fall back in target BS and carry out business continuing.
211, MME sends handover request to original MSC.
Wherein, described handover request is used for asking mobile terminal to be switched in target BS.
During selected in 2G/3G network when the MSC judging that target BS is subordinate to was a upper moment in the present embodiment MSC, MSC selected in 2G/3G network during a upper moment was called original MSC herein.
The original MSC that MME is subordinate to target BS sends handover request, to inquire whether this original MSC allows mobile terminal to be switched to target BS and adhere to.
212, MME is received in original MSC permission UE and is switched to the attachment response sent when target BS adheres to.
Original MSC allow mobile terminal be switched to target BS adhere to time, original MSC can to MME feedback attachment response.After receiving attachment response, mobile terminal can be attached in target BS by MME.Because MSC that target BS is now be subordinate to is that corresponding relation between original MSC, MME and this original MSC can't change.
In the present embodiment, in the moving process of UE, after the LTE network base station accompanying by UE changes, MME can by UE from the 2G/3G network base station that the 2G/3G network base station of current attachment is switched in above-mentioned LTE network base station range, like this after the position of UE changes, when UE needs to carry out CS domain dropping, under the 2G/3G network base station after UE successfully can fall back to switching, carry out business continuing.
Embodiment three
The structural representation of a kind of MME that Fig. 3 provides for the embodiment of the present invention three.As shown in Figure 3, this MME comprises: the first judge module 31, acquisition module 32, choose module 33, second judge module 34 and attachable module 35.
Wherein, the first judge module 31, for judging whether mobile terminal is switched to the first base station from the origination base station LTE network and adheres to.
The acquisition module 32 be connected with the first judge module 31, for when the judged result of the first judge module 31 is for being, obtains the second base station of all 2G/3G networks in its coverage of described first base station.
What be connected with acquisition module 32 chooses module 33, for choosing second base station as target BS from the second all base stations.
With the second judge module 34 chosen module 33 and be connected, MSC selected in 2G/3G network during for judging whether the MSC that described target BS is subordinate to is a moment on described mobile terminal.
The attachable module 35 be connected with the second judge module 34, is no for the judged result at described second judge module 34, is attached in described target BS by described mobile terminal.
Attachable module 35, also for when the judged result of the second judge module 34 is for being, the original MSC be subordinate to target BS sends handover request, to inquire whether this original MSC allows mobile terminal to be switched to target BS and adhere to.
MSC selected in 2G/3G network during a upper moment was called original MSC herein.
Further, described acquisition module 32, specifically for indicating all described second base station in described its coverage of first base station search, receives the facility information relevant to each described second base station of described first base station feedback.Alternatively, described acquisition module 32, specifically for receiving the facility information of each second base station in its coverage prestored that described first base station sends.
Wherein, described facility information comprises the cell information of the device identification of the second base station, geographical location information and the second base station range.
Further, described in choose module 33, specifically for according to the geographical location information of described first base station and the geographical location information of each second base station, from all second base stations, determine target BS described in the conduct nearest apart from described first base station.
The structural representation of a kind of attachable module that Fig. 4 provides for the embodiment of the present invention three.As shown in Figure 4, described attachable module 35 specifically comprises: receiving element 351, transmitting element 352 and set up unit 353.
Wherein, receiving element 351, receive the attachment request that described mobile terminal sends, described attachment request is used for request and is attached in described target BS by described mobile terminal, and be received in the attachment response sent when the MSC be subordinate to described in target BS allows described mobile terminal to access described target BS, and the Data Update response of feeding back after described be subordinate to MSC gets the more new data of described mobile terminal.
The transmitting element 352 be connected with receiving element 351, for described attachment request is sent to described be subordinate to MSC, and after the described attachment response receiving described be subordinate to MSC transmission, send the Data Update instruction of described mobile terminal to described be subordinate to MSC, with the more new data making described be subordinate to MSC obtain described mobile terminal.
With receiving element 351 establishment of connection unit 353, for setting up the corresponding relation between described be subordinate to MSC.
Further, during selected in 2G/3G network when the second judge module 34 judges that the MSC that target BS is subordinate to is a moment on mobile terminal MSC, MSC selected in 2G/3G network during a moment on mobile terminal is called original MSC herein, transmitting element 352 is for sending handover request to original MSC, mobile terminal is switched in target BS by request to be adhered to, after permission switches, receiving element 351 will receive the attachment response of target BS feedback.After receiving attachment response, set up unit 353 and mobile terminal is switched in target BS adheres to.
The device of the present embodiment can perform the technical scheme of embodiment of the method shown in Fig. 1 and 2, and it realizes principle and technique effect is similar, repeats no more herein.
In the present embodiment, MME judge mobile terminal whether from LTE network origination base station be switched to the first base station and adhere to, after judging switching, obtain the second base station of all 2G/3G networks in its coverage of the first base station, MME chooses one as target BS from the second all base stations, if during selected in 2G/3G network during a moment on the MSC immobile terminal that target BS is subordinate to MSC, mobile terminal is attached in target BS by MME.In the moving process moved at mobile terminal in the present embodiment, after the LTE network base station accompanying by mobile terminal changes, MME can by mobile terminal from the 2G/3G network base station that the 2G/3G network base station of current attachment is switched in above-mentioned LTE network base station range, like this when the position of mobile terminal changes, when needs carry out CS domain dropping, under the 2G/3G network base station after mobile terminal successfully can fall back to switching, carry out business continuing.
One of ordinary skill in the art will appreciate that: all or part of step realizing above-mentioned each embodiment of the method can have been come by the hardware that program command is relevant.Aforesaid program can be stored in a computer read/write memory medium.This program, when performing, performs the step comprising above-mentioned each embodiment of the method; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a network attached method for mobile terminal, is characterized in that, comprising:
Mobile management entity MME judges whether mobile terminal is switched to the first base station from the origination base station LTE network and adheres to;
If judged result is, described MME obtains the second base station of all second generations/third generation 2G/3G network in its coverage of described first base station;
Described MME chooses second base station as target BS from the second all base stations;
Original MSC selected in 2G/3G network when described MME judges whether the moving exchanging center MSC that described target BS is subordinate to is a moment on described mobile terminal;
If judged result is no, described mobile terminal is attached in described target BS by described MME.
2. the network attached method of mobile terminal according to claim 1, is characterized in that, described MME chooses second base station as before target BS from the second all base stations, also comprises:
If judged result is no, described MME judges that described mobile terminal adheres to the need of again choosing base station from 2G/3G network;
If judged result is yes, described MME obtains described second base station of all 2G/3G networks in its coverage of described origination base station.
3. the network attached method of mobile terminal according to claim 1, is characterized in that, if described judged result is yes, described MME obtains the second base station of all 2G/3G networks in its coverage of described first base station, comprising:
Described MME indicates all described second base station in described its coverage of first base station search;
Described MME receives the facility information relevant to each described second base station of described first base station feedback;
Or, the facility information of each second base station in its coverage prestored that described described first base station of MME reception sends;
Wherein, described facility information comprises the cell information of the device identification of the second base station, geographical location information and the second base station range.
4. the network attached method of mobile terminal according to claim 3, is characterized in that, described MME chooses second base station as target BS from the second all base stations, comprising:
Described MME, according to the geographical location information of the geographical location information of described first base station and each second base station, determines target BS described in the conduct nearest apart from described first base station from all second base stations.
5. the network attached method of mobile terminal according to claim 1 and 2, is characterized in that, if judged result is no, described mobile terminal is attached in described target BS by described MME, comprising:
Described MME receives the attachment request of described mobile terminal transmission and described attachment request is sent to described be subordinate to MSC, and described attachment request is used for request and is attached in described target BS by described mobile terminal;
Described MME is received in the attachment response sent when described be subordinate to MSC allows described mobile terminal to access described target BS;
Described MME sends the Data Update instruction of described mobile terminal to described be subordinate to MSC, with the more new data making described be subordinate to MSC obtain described mobile terminal;
Described MME receives the Data Update response of described be subordinate to MSC feedback, and sets up the corresponding relation between described be subordinate to MSC.
6. a mobile management entity MME, is characterized in that, comprising:
First judge module, for judging whether mobile terminal is switched to the first base station from the origination base station LTE network and adheres to;
Acquisition module, for when the judged result of described first judge module is for being, obtains the second base station of all second generations/third generation 2G/3G network in its coverage of described first base station;
Choose module, for choosing second base station as target BS from the second all base stations;
Second judge module, MSC selected in 2G/3G network during for judging whether the moving exchanging center MSC that described target BS is subordinate to is a moment on described mobile terminal;
Attachable module, for being no in the judged result of described second judge module, is attached to described mobile terminal in described target BS.
7. MME according to claim 6, it is characterized in that, described first judge module, also for described mobile terminal not from LTE network origination base station be switched to the first base station adhere to time, judge that described mobile terminal adheres to the need of again choosing base station from 2G/3G network;
Described acquisition module, also for obtaining described second base station of all 2G/3G networks in its coverage of described origination base station.
8. MME according to claim 6, it is characterized in that, described acquisition module, specifically for indicating all described second base station in described its coverage of first base station search, receives the facility information relevant to each described second base station of described first base station feedback;
Or described acquisition module, specifically for receiving the facility information of each second base station in its coverage prestored that described first base station sends;
Wherein, described facility information comprises the cell information of the device identification of the second base station, geographical location information and the second base station range.
9. MME according to claim 8, it is characterized in that, describedly choose module, specifically for according to the geographical location information of described first base station and the geographical location information of each second base station, from all second base stations, determine target BS described in the conduct nearest apart from described first base station.
10. the MME according to claim 6 or 7, is characterized in that, described attachable module, specifically comprises:
Receiving element, receive the attachment request that described mobile terminal sends, described attachment request is used for request and is attached in described target BS by described mobile terminal, and be received in the attachment response sent when described be subordinate to MSC allows described mobile terminal to access described target BS, and the Data Update response of feeding back after described MSC gets the more new data of described mobile terminal;
Transmitting element, for described attachment request is sent to described be subordinate to MSC, and after the described attachment response receiving described be subordinate to MSC transmission, send the Data Update instruction of described mobile terminal to described be subordinate to MSC, with the more new data making described be subordinate to MSC obtain described mobile terminal;
Set up unit, for setting up the corresponding relation between described be subordinate to MSC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| US20100034168A1 (en) * | 2008-08-08 | 2010-02-11 | Kaniz Mahdi | System and Method for Enabling SR-VCC with Shared IMPU |
| US20130210430A1 (en) * | 2012-02-15 | 2013-08-15 | Samsung Electronics Co., Ltd | Mobile communication system and paging message processing method thereof |
| CN103974231A (en) * | 2014-05-21 | 2014-08-06 | 中国联合网络通信集团有限公司 | Position updating method and mobile terminal |
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| CN101594605A (en) * | 2008-05-28 | 2009-12-02 | 华为技术有限公司 | Select method, the Apparatus and system of circuit domain service network |
| US20100034168A1 (en) * | 2008-08-08 | 2010-02-11 | Kaniz Mahdi | System and Method for Enabling SR-VCC with Shared IMPU |
| US20130210430A1 (en) * | 2012-02-15 | 2013-08-15 | Samsung Electronics Co., Ltd | Mobile communication system and paging message processing method thereof |
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