CN103843406B - mobile network sharing method and device - Google Patents
mobile network sharing method and device Download PDFInfo
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- CN103843406B CN103843406B CN201280001906.4A CN201280001906A CN103843406B CN 103843406 B CN103843406 B CN 103843406B CN 201280001906 A CN201280001906 A CN 201280001906A CN 103843406 B CN103843406 B CN 103843406B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Abstract
The present invention relates to a kind of mobile network sharing method, when being moved to GERAN the method includes the UE in Idle state from LTE network and share network, oldPLMN ID or the old RAI of UE ps domains in LTE network are obtained;Select the corresponding PLMN of old PLMN ID or the old RAI as the PLMN of the ps domain for the GERAN networks for servicing the UE;The PLMN of the ps domain is identical as the domains the CS PLMN that the UE is selected in the LTE network.Mobile network sharing method provided in an embodiment of the present invention, can be different to avoid the PLMN in the domains ps domain PLMN and CS of service user, the problem of to make UE that can not obtain normal service.
Description
Technical field
The present invention relates to mobile communication fields, and in particular to a kind of mobile network sharing method and device.
Background technology
Existing long-term evolving network(Long Term Evolution, LTE)In, when there is multiple responsible voice data
Circuit switching(Circuit switching, CS)The public land mobile network in domain(Public LandMobile Network,
PLMN)It can be with served user equipment(User Equipment, UE)When, mobility management entity(Mobility Management
Entity, MME)The PLMN in the domains CS of selection service UE or operator(operator).
In GSM EDGE wireless access networks(GSM EDGE Radio Access Network, GERAN)In GERAN networks,
If there is Gs interface then by service universal grouping wireless service(General PacketRadio Service, GPRS)It supports
Node(Serving GPRS Support Node, SGSN)Select the PLMN in the domains CS;Otherwise base station controller(Base
Station Controller,BSC)The PLMN of selection service UE.The existing standard regulation domains CS and packet-switched domain (packet
Switch, PS) PLMN it is consistent, otherwise UE cannot be normally carried out business.
UE when LTE is resident, initiate joint tracing section updating either attachment flow MME selected the domains CS PLMN or
Operator.When UE is moved to GERAN from LTE, the domains ps domain PLMN and CS that access network element is UE selections are may result in
PLMN is different, to make UE that can not obtain normal service.
Since a PLMN can only belong to an operator, an operator can include one or more PLMN,
In same RAT the domains CS it is identical with the PLMN of ps domain, the PLMN of different RAT may be different, for example, GERAN the domains CS PLMN and PS
Domain PLMN is identical, but the PLMN of GERAN and UTRAN is not necessarily identical, can be different.The present invention provides a kind of methods, protect
The ps domain of card service UE is identical with the domains CS PLMN or operator.
Invention content
The object of the present invention is to provide a kind of mobile network sharing method and device, with solve in the prior art UE from LTE
It when Network Mobility is to GERAN networks, can not ensure that the domains CS are consistent with the PLMN of ps domain or operator, and cause UE that can not obtain just
The problem of informal dress is engaged in.
On the one hand, an embodiment of the present invention provides a kind of mobile network sharing method, the method includes:
UE in Idle state from LTE network be moved to GERAN share network when, obtain the ps domain in LTE network of UE
Old PLMN ID or old RAI;
Select the corresponding PLMN of old PLMN ID or the old RAI as the PS for the GERAN networks for servicing the UE
The PLMN in domain;The PLMN of the ps domain is identical as the domains the CS PLMN that the UE is selected in the LTE network.
In a kind of preferable embodiment of the embodiment of the present invention, the ps domain in LTE network of described acquisition UE
Old PLMN ID or old RAI are specifically included:
The message for including old PLMN ID or old RAI that mobile management network element is sent is received, to obtain old
PLMN ID or old RAI.
In a kind of preferable embodiment of the embodiment of the present invention, old PLMN ID or the old RAI couple is selected
The PLMN answered includes as the PLMN of the ps domain for the GERAN networks for servicing the UE:
The corresponding PLMN selection strategies of PLMN ID or RAI are locally configured in access network element, according to the old of the UE
PLMN ID or RAI ID are locally searching corresponding PLMN selection strategies, PLMN are selected to service UE.
On the other hand, the embodiment of the present invention provides a kind of mobile network sharing method, the method includes:
Receive the access request information for the Idle state UE that GERAN networks are moved to from LTE network;
The old RAI information or old PLMN id informations of the UE are obtained according to the access request message;
The old RAI or old PLMN id informations are sent to base station controller area BSC, so that the BSC selects institute
State PLMNs of the corresponding PLMN of old RAI or old PLMN ID as the ps domain of the GERAN networks of service UE, the ps domain
PLMN that the PLMN in the domains CS of UE is serviced in the LTE with the UE is identical.
It is described to send the old RAI or old to BSC in a kind of preferable embodiment of the embodiment of the present invention
Further include after PLMN id informations,
Judge whether UE sends out in the case where the UE is in GERAN and shares network to BSC in the shared networks of GERAN
Send the old RAI or old PLMN.
It is described to send the old RAI or old to BSC in a kind of preferable embodiment of the embodiment of the present invention
Further include after PLMN id informations,
Judge whether UE is moved to GERAN from LTE and shares network, if the UE is to be moved to GERAN from LTE to share net
Network sends the old RAI or old PLMN to BSC.
In a kind of preferable embodiment of the embodiment of the present invention, described judges whether institute UE is to be moved to from LTE
GERAN share network method be:
Know that the UE is moved to GERAN from LTE from UE, wherein the shared network that the GERAN networks are.
It is described according to described in access request message acquisition in a kind of preferable embodiment of the embodiment of the present invention
The old PLMN id informations of UE are specially:
The old RAI information in access request information is obtained, it is old PLMN ID that PLMN information is read from old RAI.
In another aspect, the embodiment of the present invention provides a kind of mobile network sharing method, the method includes:
Receive the access request information of UE;
The domains the CS PLMN for obtaining or selecting UE, selects the corresponding MME Code of the domains the CS PLMN;
The unique interim subscriber identity information in the whole world is sent to the UE, the unique interim subscriber identity information in the whole world includes institute
MME Code is stated, when UE is moved to GERAN networks, the NRI of the MME Code mapping services the UE's for BSC selections
The PLMN of the ps domain of GERAN networks, the PLMN of the ps domain and the UE service the PLMN phases in the domains CS of UE in the LTE
Together.
In a kind of preferable embodiment of the embodiment of the present invention, the domains the CS PLMN for obtaining UE is specially:
The domains the CS PLMN/ operator's informaitons of UE are received from mobile services switching centre.
In a kind of preferable embodiment of the embodiment of the present invention, the MME Code be include the domains the CS PLMN
The MME Code of ps domain NRI or null NRI.
It is when the PLMN disposes SGSN pool or more in a kind of preferable embodiment of the embodiment of the present invention
When a SGSN can service UE, the MME Code includes null NRI.
In another aspect, the embodiment of the present invention provides a kind of mobile network sharing method, the method includes:
Receive the message for including UE access request message that base station controller BSC is sent;
The domains the CS PLMN that message obtains the CS reception services UE of UE is sent to the old mobile management network element MME of service UE
ID,
The domains the CS PLMN/ operators of PLMN/ operators belonging to comparing and service UE, if different by the domains the CS PLMN ID
It is sent to BSC.
In a kind of preferable embodiment of the embodiment of the present invention, the CS of relatively more affiliated PLMN/ operators and service UE
Domain PLMN/ operators further include if the domains the CS PLMN ID are sent to BSC by difference:
If not including that the IMSI or BSC is sent in the message including UE access request message that the BSC is sent
The message including UE access request message include redirect attempt label, then the domains the CS PLMN information is sent to BSC.
In a kind of preferable embodiment of the embodiment of the present invention, the old mobile management network element to service UE
MME sends message and obtains user's context, specially:
The old RAI in the access request message are obtained, and search the old movement of service UE according to the old RAI
Property managed network element, from the old mobile management network element got obtain user's context.
In another aspect, the embodiment of the present invention provides a kind of mobile network sharing method, the method includes:
Receive the message for including access request message of UE;
The message for including the access request message is sent to first movement managed network element;
Receive the domains the CS PLMN id informations that the first movement managed network element is sent;
The second mobile management network element corresponding with the domains the CS PLMN is selected according to the domains the CS PLMN ID;
Include the message of UE access request message to second mobile management network element transmission, makes the ps domain of service UE
It is identical that PLMN services in the LTE PLMN in the domains CS of UE with the UE.
In a kind of preferable embodiment of the embodiment of the present invention, according to the domains CS PLMN ID selections and the CS
Corresponding second mobile management network elements of domain PLMN, specially:
The GPRS serving GPRS support node SGSN of selection service CS domain PLMN, or;
The SGSN of the domains selection service CS PLMN operators.
In a kind of preferable embodiment of the embodiment of the present invention, receive what the first movement managed network element was sent
The domains CS PLMN id informations further include,
Receive the domains CS PLMN id informations and international mobile subscriber identity that the first movement managed network element is sent
IMSI information.
In another aspect, the embodiment of the present invention also provides a kind of mobile network sharing device, described device includes:
Acquiring unit, for the UE in Idle state from LTE network be moved to GERAN share network when, obtain UE
Old PLMN ID or the old RAI of ps domain when LTE network;
Selecting unit, for selecting the corresponding PLMN of old PLMN ID or the old RAI as the service UE's
The PLMN of the ps domain of GERAN networks;The domains the CS PLMN phases that the PLMN of the ps domain is selected with the UE in the LTE network
Together.
In another aspect, the embodiment of the present invention also provides a kind of mobile network sharing device, described device includes:
Receiving unit, to receive the access request information for the Idle state UE for being moved to GERAN networks from LTE network;
Acquiring unit, to obtain the old RAI information or old PLMN of the UE according to the access request message
Id information;
Transmission unit sends the old RAI or old PLMN id informations, so that described to base station controller BSC
BSC select the old RAI or the corresponding PLMN of old PLMN ID as service UE GERAN networks ps domain PLMN,
It is identical that the PLMN of the ps domain services in the LTE PLMN in the domains CS of UE with the UE.
In another aspect, the embodiment of the present invention also provides a kind of mobile network sharing device, described device includes:
Receiving unit, the access request information for receiving UE;
Acquiring unit, the domains the CS PLMN for obtaining or selecting UE select the corresponding MME Code of the domains the CS PLMN;
Transmission unit, for sending the unique interim subscriber identity information in the whole world, the unique casual user in the whole world to the UE
Identification information includes the MME Code, and when UE is moved to GERAN networks, the NRI of the MME Code mapping is selected for BSC
Service the CS that the PLMN of the ps domain of the GERAN networks of the UE, the PLMN of the ps domain and the UE service UE in the LTE
The PLMN in domain is identical.
In another aspect, the embodiment of the present invention also provides a kind of mobile network sharing device, described device includes:
Receiving unit, to receive the message for including UE access request message of BSC transmissions;
Transmission unit sends message to the old mobile management network element MME to service UE and obtains user's context, institute
The domains the CS PLMN ID that context includes the CS reception services UE for servicing UE are stated,
Comparing unit, the domains the CS PLMN/ operators of relatively more affiliated PLMN/ operators and service UE, if different by the CS
Domain PLMN ID are sent to BSC.
In another aspect, the embodiment of the present invention also provides a kind of mobile network sharing device, described device includes:
First receiving unit receives the access request message of UE;
First transmission unit includes the message of the access request message to the forwarding of first movement managed network element;
Second receiving unit, to receive the domains the CS PLMN id informations that the first movement managed network element is sent;
Selecting unit, to select the second mobility pipe corresponding with the domains the CS PLMN according to the domains the CS PLMN ID
Manage network element;
Second transmission unit includes the message of UE access request message to second mobile management network element transmission, makes
It is identical that the PLMN of the ps domain services in the LTE PLMN in the domains CS of UE with the UE.
Mobile network sharing method provided in an embodiment of the present invention, by obtaining and the domains the CS old PLMNID information pair
The mode for the ps domain PLMN/ operators answered is that UE selects ps domain identical with the domains CS old PLMN ID are stated by access network element
PLMN/operator is accessed, to avoid the PLMN in the domains ps domain PLMN and CS of BSC selections different, to make UE can not
The problem of obtaining normal service.
Description of the drawings
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
Needed in attached drawing be briefly described, it should be apparent that, the accompanying drawings in the following description be only the present invention some
Embodiment for those of ordinary skill in the art without having to pay creative labor, can also be according to these
Attached drawing obtains other attached drawings.
Fig. 1 is the Organization Chart that Operator Core Network is shared by multiple operators;
Fig. 2 is that wireless network architecture figure is shared by multiple a operators;
Fig. 3 is the flow chart of one embodiment of mobile network sharing of embodiment of the present invention method;
Fig. 4 is the interaction mode figure of one embodiment of mobile network sharing of embodiment of the present invention method;
Fig. 5 is the interaction mode figure of another embodiment of mobile network sharing method of the embodiment of the present invention;
Fig. 6 is the interaction mode figure of another embodiment of mobile network sharing method of the embodiment of the present invention;
Fig. 7 is the structure chart of another embodiment of mobile network sharing device of the embodiment of the present invention;
Fig. 8 is the structure chart of another embodiment of mobile network sharing device of the embodiment of the present invention;
Fig. 9 is the structure chart of one embodiment of mobile network sharing of embodiment of the present invention device;
Figure 10 is the structure chart of another embodiment of mobile network sharing device of the embodiment of the present invention;
Figure 11 is the structure chart of another embodiment of mobile network sharing device of the embodiment of the present invention.
Specific implementation mode
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Fig. 1 is the Organization Chart that Operator Core Network is shared by multiple operators, and Fig. 2 is that wireless network frame is shared by multiple operators
Composition.It supports the UE of network share to select PLMN, and the PLMN of selection is sent to BSC, BSC notifies SGSN/MSC.To not propping up
Hold the UE of network share, BSC attempts the SGSN accesses of different PLMN in multi-operator core network MOCN, until success or all
Until SGSN refusal accesses.Gateway core net(Gateway Core Netword, GWCN)In, service is determined by SGSN/MSC
PLMN。
In GERAN network shares, to not supporting the UE of network share, network to need to ensure service user ps domain
As PLMN/ operators with the PLMN/ operators in the domains service user CS are, if there is Gs interface, SGSN needs to select MSC
Operator it is consistent with oneself.If there is no Gs interface, temporary logical link identifier is read to the UE of initial access, BSC
(Temporary Logical LinkIdentifier, TLLI)In internet resource mark(Network Resource
Identifier, NRI)If NRI is not effective, cooperated using CS/PS(coordination)Flow ensures the domains CS and PS
Domain operator is consistent.If NRI is effective, determine that PLMN, selection are corresponding according to the relationship of NRI and local NRI and PLMN
SGSN sends a message to the SGSN.
NRI of the present invention is effective, refers to the value of the NRI in TLLI and in the list that NRI is locally configured.Wherein NRI includes
In TLLI codings.In other implementations, all PLMN for servicing current region form a pool, which belongs to
The pool, NRI is effective at this time.
CS/PS coordination flows are one that the initial message of user is sent in multiple SGSN by BSC
SGSN, and include redirecting to attempt label(redirection attempt flag), after receiving initial message, SGSN from UE or
The old SGSN/MME of person's service user obtains user's international mobile subscriber identity(International Mobile
SubscriberIdentification Number, IMSI), include redirecting order label to BSC/RNC transmissions
(redirection command flag)Message, message includes cause value " CS/PS coordination ";BSC according to
IMSI reselects SGSN, and the initial message of user is sent to selected SGSN, is sent collectively to the also packet of the SGSN
Include the IMSI of user.
For this purpose, the embodiment of the present invention is to configure selection PLMN strategies identical with the affiliated PLMN of MME on BSC;Work as user
When being moved to GERAN from LTE, BSC obtains PLMN or the Route Areas user old code belonging to the MME of service UE(Routing
Area Identification, RAI), the domains the CS PLMN selection strategies of PLMN or RAI belonging to MME, determining service
The ps domain PLMN of UE.Or when disposing MME Code, MME Code corresponding with the PLMN/ operators in the domains CS, MME Code are configured
The high eight-bit of the NRI fields in TLLI can be mapped to, under MOCN scenes, BSC reads NRI, select the corresponding PLMN of NRI to
Determine that PLMN is user service, to ensure that the PLMN in the domains ps domain PLMN and CS of BSC selections is identical.
Fig. 3 is the flow chart of an embodiment of mobile network sharing method provided in an embodiment of the present invention, the embodiment from
Base station controller BSC side as access network element describes method provided in an embodiment of the present invention.As seen from the figure the method includes:
Step 301, the UE in Idle state from LTE network be moved to GERAN share network when, obtain UE in LTE nets
Old PLMN ID or the old RAI of ps domain when network;
Specifically, after UE is moved to GERAN from LTE network and shares network, the service of the domains CS is obtained by shared network
With ps domain service.In this embodiment, UE first accesses LTE, obtains CS services by a PLMN, it is total to be moved to GERAN later
Network is enjoyed, access request is sent out, request obtains ps domain service.
When UE access LTE obtains the service of the domains CS and has multiple PLMN that can provide the service of the domains CS, by MME according to operation
The PLMN in the domains policy selection CS of quotient's configuration.The strategy of operator's configuration can be the unification of MME operators configuration
Selection CS domain PLMN strategy, can also be the proprietary domains the CS PLMN selection strategies of MME.When UE is moved to GERAN, GUMMEI
(Global Unique MME Identifier, MME global unique identification), is mapped as RAI, therefore can locally match in BSC
It sets and the distinctive PLMN selection strategies of the MME affiliated PLMN or the MME.As the PLMN or multiple MME of BSC and multiple MME
When having the demand of communication, the PLMN selection strategies of multiple PLMN or multiple MME can be configured on BSC.When UE access,
BSC obtains old PLMN or the old RAI (i.e. GUMMEI) of UE access, searches the local policy configuration of BSC, obtains corresponding
PLMN selection strategies.It should be strongly noted that is configured on MME is the PLMN selection strategies in the domains CS, and configured on BSC
Be then ps domain PLMN selection strategies, ensure MME, the selected domains CS BSC are identical with the PLMN of ps domain.
After getting corresponding PLMN, to the mobile management net element of the ps domain PLMN/ operators got
(SGSN)Access request is forwarded, it is identical to ensure to service the PLMN in the domains ps domain PLMN and CS of UE.
In this embodiment, by the way that PLMN identical with MME is locally configured in the base station controller BSC for being used as access network element
Selection strategy is that UE selects ps domain PLMN/operator identical with the domains CS old PLMN ID are stated to be connect by access network element
Enter, to avoid the PLMN in domains ps domain PLMN and CS that BSC selects different, to make UE that can not obtain asking of normally servicing
Topic.
Fig. 4 is a kind of interaction mode reference chart of embodiment of mobile network sharing method provided by the invention, can by figure
See, the method includes:
Step S401, BSC distributing radio resource receives the message that UE is sent, message includes issuing mobility pipe to UE
Manage the NAS message of network element;
Specifically, in GERAN networks, access network element is BSC or BSS, and network share is not supported in the present invention
UE, which refers to, does not support GERAN network shares UE.
Step S402, BSC send the access request information of UE to mobile management network element;
It is asked specifically, the message that BSC is sent to mobile management network element is the access that UE is sent to mobile management network element
Message is sought, may include old RAI in access request message, which is sent initially to BSC, then is transmitted to by BSC
Mobile management network element.
Since BSC does not know which PLMN can service UE, BSC at will one mobile management network element forwarding of selection
The access request of user, while BSC can attempt label by redirecting(RedirectAttempt Flag)Including sending out in the message
Mobile management network element is sent to, in the present embodiment, it is assumed that user's first choice is sent to mobile management network element SGSN1.
It should be noted that the access request of user (is also referred to as NAS request, nonaccess in the present embodiment
Stratum Non-Access Stratums are asked), it can include but is not limited to Attach request attach requests, the Route Areas RAU request
Update request.Access request refusal (also referred to as NAS reject, nonaccess stratum Non-Access Stratums refusal) in the present invention
Message can include but is not limited to attach reject attachments refusal, RAU reject Routing Area Updates refusal.Access request
Receive and (also become NAS accpet, Non-Access Stratum receives), may include but be not limited to attach accept attachment receive,
RAU accept Routing Area Updates receive, and are only illustrated so that attach adheres to as an example in the present embodiment.
GERAN includes redirecting to attempt label(redirect attempt flag)Message is upcoming base station subsystem
System and GPRS protocol messages.
Step S403, mobile management network element obtains old RAI in access request message, obtains and indicates that the UE's is old
PLMN identification information, PLMN at this time refers to the old PLMN information for serving ps domain;
Specifically, SGSN1 services the old mobile management network element of UE before being searched according to old RAI, to old movement
Property managed network element obtain user's IMSI information.
If it is first access network to obtain failure or UE, mobile management network element obtains user's IMSI information from UE.
The old PLMN information that mobile management network element can be read from old RAI judges that UE is roaming according to IMSI
User, and old PLMN are the PLMN for having the LTE network using agreement with the domains CS;
Step S404, mobile management network element to BSC send redirect instruction message, message include old PLMN or
Old RAI information;
Optional SGSN may determine that UE is in shared network and just sends old PLMN or old RAI, on the contrary then do not send out
It send;
Whether wherein UE can be realized by operator in SGSN configurations in shared network, for example configure the BSC of UE access
It is that multi-operator is shared, then UE is in shared network.
Optionally, SGSN may determine that UE is moved to GERAN from LTE, and just transmission old PLMN or old RAI, on the contrary
It does not send then.
Wherein, UE is moved to GERAN from LTE, can carry " P-TMSI type " in access request message by UE and be
" GUTI " is known.
Specifically, the instruction message that redirects includes redirecting instruction(redirection indicaiton)'s
Message, the Reason For Denial value in message are CS/PS cooperations(coordination).
Step S405, BSC according to old RAI or old PLMN and be locally configured data determine service UE PLMN;
Specifically, configuring the selection strategy of the corresponding PLMN of LTE PLMN or RAI, this selection strategy and old on BSC
The strategy configured on the MME of PLMN is consistent.
Old PLMN | Select PLMN |
PLMN1 | PLMN A |
PLMN2,3 | PLMN B |
PLMN4 | PLMN C |
Table 1
PLMN wherein in old PLMN and selection strategy can be one-one relationship as shown in Table 1 or many-to-one
Relationship.
Old RAI | Select PLMN |
RAI1 | PLMNA |
RAI2,3 | PLMN B |
RAI4 | PLMN C |
Table 2
Wherein, the PLMN in old RAI and selection strategy can be as shown in Table 2 one-to-one or many-to-one pass
System.
Step S406, BSC send access request message to the corresponding mobile management network element of selection strategy;
Specifically, SGSN2 can be the SGSN different from SGSN1, can also be exactly SGSN1.
After this, if SGSN2 refuses UE access, it includes refusing disappearing for UE access message to be sent to access network element
Breath, access network element forward the refusal UE access message to UE.
By above-described embodiment, the PLMN selection strategies of multiple PLMN/RAI are configured in BSC, BSC is obtained belonging to MME
The corresponding Old RAI of PLMN or MME search the corresponding PLMN selection strategies of old RAI/PLMN, determine ps domain PLMN.It keeps away
Exempt from, because of the domains CS PLMN and ps domain PLMN inconsistent the case where causing UE that can not obtain service, to improve user experience.
Fig. 5 is the interaction mode reference of another embodiment of mobile network sharing method provided in an embodiment of the present invention
Figure, it is seen that the method includes:
Step S501, UE send joint attachment/tracing section updating to mobile management network element and ask (combined
Attach, combined TAU request) message;
Step S502 after MME receives message, obtains CS domain PLMN/operator, selects the domains CS PLMN or operator
Corresponding mobile management network element coding(MME Code, MMEC);
Specifically, the mode that the domains CS PLMN/operator is obtained can have following methods:
The first, the domains the CS PLMN/operator of MME selection services UE;
Second, MME sends location update request message to MSC under MOCN scenes, belonging to the MSC for receiving update request
PLMN be the domains CS PLMN/operator;
The third, under GWCN scenes, MME sends access request message to MSC, by MSC selection CS domain PLMN/
Operator, and notify MME;
Three of the above mode, only as an example, the present invention does not limit.
The corresponding MMEC of the domains CS PLMN/ operators refers to:Include NRI null NRI corresponding with the PLMN
MMEC, alternatively, the MMEC of ps domain NRI or the null NRI including the domains CS PLMN, this implementation NRI refers to that can be identified for that out
The PLMN of ps domain or operator(operator)One mark, its specific expression form is not limited.
More specifically, when there is the multiple domains CS PLMN/ operators(operator)When can service a MME, the domains CS are each
PLMN/ operators(operator)All there are one the NRI for being different from other PLMN, operator can configure multiple MME Code, often
One MME Code includes an above-mentioned PLMN/ operator(operator)NRI;When above-mentioned PLMN/ operators
(operator)When ps domain NRI codings are different from the NRI in the domains CS, MME Code should include the NRI of ps domain.For example, working as
The NRI in the domains PLMN/operator1CS is 1, and when the ps domain NRI of the PLMN/operator1 is 2, MMEC includes that NRI values are
2。
In addition, when the PLMN/ operators of shared network(operator)Group has MSC/ VLR Visitor Location Registers
(Visitor Location Register), when VLR SGSN pool, MMEC includes PLMN/ operators
(operator)Null-NRI;When the domains PLMN/operator CS and the null-NRI differences of ps domain, MMEC includes
PLMN/ operators(operator)The null-NRI of ps domain.
When there is the multiple domains CS PLMN to service a MME, which has multiple MMEC, so MME will be selected and the domains CS
The corresponding MMEC of NRI of PLMN are illustrated:
The corresponding NRI or null-NRI of the domains CS PLMN for servicing the MME are 1,2,3 respectively;Binary coding is respectively
00,10,11;Then the coding of MMEC can be as shown in table 3:
MMEC | NRI null NRI |
xxxxxx01 | 01 |
Xxxxxx10 | 10 |
xxxxx11 | 11 |
Table 3
In the present embodiment " x " identify 0,1 arbitrary value;It should be noted that the position of the coding of NRI depends on
Access network element reads the position of NRI in GERAN/UTRAN, and the present invention is not restricted.The present embodiment is only to be placed on minimum two
Example.According to standard regulation, MMEC is mapped as 23-16 of P-TMSI at this time, according to the present embodiment access network element reading 16-17
Position is used as NRI, and position is configured as NRI by operator those of in wherein access network element reading P-TMSI.
But the position of NRI is identified in MMEC not as restriction, can at minimum 2, can also 2 intermediate, etc..
If the position that NRI is read in operator's configuration is 23-22, the coding of MMEC should be as shown in table 4.
Table 4
Step S504, MME send GUTI information to UE, include MMEC in GUTI information;
Specifically, MME sends the whole world only after the corresponding MMEC of the domains CS PLMN/operator for obtaining UE, to UE
One temporary identifier id information GUIT includes MMEC in GUIT.
Step S505, UE send the information for including network resource identifier to access network element;
Specifically, UE after receiving GUTI, reads MMEC information, and obtain network resource identifier NRI wherein.
When UE is moved to GERAN networks, GUTI can be mapped as TLLI by UE, and wherein MMEC can be mapped as in TLLI
The field of 23-16.NRI is sent to access network element.For example, in GERAN networks, TLLI is sent to BSC, certain in TLLI codings
A little position such as 23-18 encode for NRI, and BSC reads the NRI in TLLI, are asked according to the NRI accesses for selecting corresponding SGSN to forward UE
Seek message.In TLLI codings, the specific location of NRI is configured by operator in BSC.
Step S506, access network element forward the access request message of UE to target mobility management network element.
Specifically, access network element obtains NRI in the information for including NRI for receiving UE transmissions, such as after TLLI.
In GERAN networks, TLLI is sent to BSC, certain positions such as 23-16 in TLLI codings encodes for NRI, BSC
The NRI in TLLI is read, the access request message of corresponding SGSN forwardings UE is selected according to NRI.In TLLI codings, the tool of NRI
Body position is configured by operator in BSC.
The MMEC of the corresponding NRI codings of the domains CS PLMN is sent to UE, when UE is moved to by method through this embodiment
When GERAN, the PLMN of service UE can be determined according to NRI, ensure the domains the CS PLMN mono- of ps domain PLMN and the MME selection of selection
It causes.It avoids, because of the domains CS PLMN and ps domain PLMN inconsistent the case where causing UE that can not obtain service, improving user experience.
Fig. 6 is the interaction mode reference of another embodiment of mobile network sharing method provided in an embodiment of the present invention
Figure, it is seen that the method includes:
Step S601, does not support the flow between the UE of network share and BSC, BSC distributing radio resources to UE, UE to
BSC sends message, and message includes issuing the NAS message of first movement managed network element;
Specifically, in GERAN networks, access network element is BSC or BSS, and network share is not supported in the present invention
UE, which refers to, does not support GERAN network shares UE.
Step S602, due to being to share network, UE does not support network share, will not provide PLMN to the BSC of selection, BSC
It according to local policy, for example randomly chooses, the access request message of selection mobile management network element SGSN transmissions UE, in this step
The network element that BSC is selected is the first SGSN, and UE sends the access request information of UE to the first SGSN;BSC can will be redirected simultaneously
Attempt label(RedirectAttempt Flag)Including being sent to the first SGSN in the message.
Specifically, UE sends access request message to the first SGSN, may include old RAI in access request message,
The access request is sent initially to BSC.
It should be noted that the access request of user (is also referred to as NAS request, nonaccess in the present embodiment
Stratum Non-Access Stratums are asked), it can include but is not limited to Attach request attach requests, the Route Areas RAU request
Update request.Access request refusal (also referred to as NAS reject, nonaccess stratum Non-Access Stratums refusal) in the present invention
Message can include but is not limited to attach reject attachments refusal, RAU reject Routing Area Updates refusal.Access request
Receive and (also become NAS accpet, Non-Access Stratum receives), may include but be not limited to attach accept attachment receive,
RaU accept Routing Area Updates receive, and are only illustrated so that attach adheres to as an example in the present embodiment.
GERAN includes redirecting to attempt label(redirect attempt flag)Message is upcoming base station subsystem
System and GPRS agreements (Uplink BSSGP Unidata) message.
Step S603, the first SGSN obtain old RAI in access request message, search service UE's according to old RAI
Old mobile management network element MME and from acquisition UE contextual informations, wherein user context information includes service UE
The domains CS PLMN ID;The wherein described domains the CS PLMN is preserved by MME, can is that MME is selected when being accessed before UE for UE, also may be used
To be to be sent to MME by SGs interfaces after MSC is selected, the present invention does not limit.
Step S604, if the PLMN and the above-mentioned domains CS PLMN belonging to the first SGSN judgements MME are differed, to
BSC sends message;
The message includes the domains the CS PLMN ID of the service UE obtained in step S603, and the message can be reset
To instruction message, the instruction message that redirects includes redirecting instruction(redirection indication)Disappear
Breath.
Optional SGSN may determine that UE is in shared network and just sends the domains the CS PLMN ID, conversely, not sending then;
Whether wherein UE can be realized by operator in SGSN configurations in shared network, for example configure the BSC of UE access
It is that multi-operator is shared, then UE is in shared network.
Optional SGSN, which may determine that in the message that BSC is sent, not to be included IMSI or includes to redirect to attempt label
(redirect attempt flag)Just send CS domain PLMN ID.
Optionally, SGSN may determine that UE is just to send the domains the CS PLMN information when being moved to GERAN from LTE, on the contrary
It does not send then.
Wherein, UE is moved to GERAN from LTE, can carry " P-TMSI type " in access request message by UE and be
" GUTI " is known.
Step S605, BSC obtain the domains the CS PLMN of service UE, select corresponding 2nd SGSN of the PLMN, described in guarantee
The domains CS PLMN is identical with the ps domain PLMN;
In same operator(operator)In the case of having multiple PLMN, BSC can match operator according to local
(operator)Selection and the domains the CS same operators of PLMN(operator)SGSN, such as the domains CS PLMN be PLMN1, belong to
Operator1, operator1 deploy PLMN1, PLMN2, then BSC can also select the SGSN of PLMN2 to service UE.If not yet
Have identical PLMN/Operator SGSN and BSC interconnect, then BSC can be selected according to IMSI hash algorithms a SGSN as
Second mobile management network element.It should be strongly noted that in the future some step UE access domain CS when, BSC still can root
Select a MSC, the MSC for ensureing selection identical with the SGSN PLMN of selection according to identical IMSI hash algorithms.
Step S606, BSC are described to disappear to the message that selected 2nd SGSN transmissions include user's access request message
Breath includes the IMSI of UE, can not include redirecting to attempt label in message(redirect attempt flag);
The 2nd SGSN of step S607 receive the message that BSC is sent, and are searched according to the old RAI in the access request message
Old mobile management network element MME obtains user context information.The user context information includes the domains CS for servicing UE
PLMN ID。
After receiving message, if the PLMNID belonging to the domains CS PLMN ID and the second mobile management network element is different but BSC is sent out
Include in the message sent IMSI or include redirect trial label, then do not send the domains CS PLMN ID to BSC, otherwise
Send CS domain PLMN ID to BSC.
By above-described embodiment, when UE is moved to GERAN from LTE, the domains the CS PLMN ID for servicing UE are sent to by MME
Target mobility management network element (the first, second mobile management network element i.e. in the present embodiment), when target mobile management network
When the first domains PLMN with CS PLMN differences, the BSC that target mobility management network element sends the domains the CS PLMN, BSC is according to
The domains CS PLMN selects corresponding SGSN.Ensure that the affiliated domains PLMN with the CS PLMN of SGSN are consistent, improves user experience.
Correspondingly, the embodiment of the present invention also provides a kind of mobile network sharing device, mobile network sharing device can be
BSC, described device can refer to Fig. 7, including:
Acquiring unit 701, for the UE in Idle state from LTE network be moved to GERAN share network when, obtain UE's
Old PLMN ID or the old RAI of ps domain in LTE network;
Selecting unit 702, for selecting the corresponding PLMN of old PLMN ID or the old RAI as described in service
The PLMN of the ps domain of the GERAN networks of UE;The domains the CS PLMN that the PLMN of the ps domain and UE is selected in the LTE network
It is identical.
Acquiring unit 701 is specifically used for:The access request message is forwarded to first movement managed network element SGSN1, is used
The domains the CS old RAI identification informations of the UE are obtained according to the access request message in SGSN1, obtain the CS for indicating the UE
The identification information of the old PLMN ID in domain;
It receives the redirection that mobility management entity is sent and indicates information, include the domains CS of the UE in the instruction information
The identification information of old PLMN ID;
According to the identification information of the old PLMN ID in the domains CS of the UE, the old with the domains CS of the UE is locally being searched
Ps domain PLMN corresponding to the identification information of PLMN ID.
The mobile network sharing device is stored with the second selection strategies of PLMN being locally configured, the selection strategy and institute
It is consistent to state the first choice strategy configured on the mobile management entity of the old PLMN ID in the domains CS of UE;
Identification information of the acquiring unit 701 according to the old PLMN ID in the domains CS, in the second selection plan being locally configured
The corresponding ps domain PLMN of selection in slightly.
In this embodiment, by the way that PLMN identical with MME is locally configured in the base station controller BSC for being used as access network element
Selection strategy is that UE selects ps domain PLMN/operator identical with the domains CS old PLMN ID are stated to be connect by access network element
Enter, to avoid the PLMN in domains ps domain PLMN and CS that BSC selects different, to make UE that can not obtain asking of normally servicing
Topic.
As shown in figure 8, the embodiment of the present invention also provides a kind of mobile network sharing device, which can
To be a kind of SGSN, described device includes:
Receiving unit 801, to receive the access request information for the Idle state UE for being moved to GERAN networks from LTE network;
Acquiring unit 802, to obtain the old RAI information or old of the UE according to the access request message
PLMN id informations;
Transmission unit 803 sends the old RAI or old PLMN id informations to BSC, is used for the access network element
Select the old RAI or the corresponding PLMN of old PLMN ID as the PLMN of the ps domain of the GERAN networks of service UE, institute
Stating the PLMN and the UE of ps domain, that the PLMN in the domains CS of UE is serviced in the LTE is identical.
By above-described embodiment, the PLMN selection strategies of multiple PLMN/RAI are configured in BSC, BSC is obtained belonging to MME
The corresponding Old RAI of PLMN or MME search the corresponding PLMN selection strategies of old RAI/PLMN, determine ps domain PLMN.It keeps away
Exempt from, because of the domains CS PLMN and ps domain PLMN inconsistent the case where causing UE that can not obtain service, to improve user experience.
As shown in figure 9, the embodiment of the present invention also provides a kind of mobile network sharing device, in the present embodiment, mobile network
Network sharing means are mobility management entity MME, and described device includes:
Receiving unit 901, the access request information for receiving UE;
Acquiring unit 902, the domains the CS PLMN for obtaining or selecting UE select the corresponding MME of the domains the CS PLMN to compile
Code;
Transmission unit 903, for sending the unique interim subscriber identity information in the whole world to the UE, the whole world is uniquely interim to be used
Family identification information includes the MME Code, and when UE is moved to GERAN networks, the NRI of the MME Code mapping is selected for BSC
The PLMN of the ps domain for the GERAN networks for servicing the UE is selected, the ps domain PLMN is identical with the domains the CS PLMN.
The MMEC of the corresponding NRI codings of the domains CS PLMN is sent to UE by mobile network sharing device through this embodiment,
When UE is moved to GERAN, the PLMN of service UE can be determined according to NRI, ensure the CS of ps domain PLMN and the MME selection of selection
Domain PLMN is consistent.It avoids, because of the domains CS PLMN and ps domain PLMN inconsistent the case where causing UE that can not obtain service, improving user
Experience.
Correspondingly, the embodiment of the present invention also provides a kind of mobile network sharing device, mobile network sharing device can be
SGSN, described device can refer to Figure 10, including:
Receiving unit 1001, to receive the message for including UE access request message of BSC transmissions;
Transmission unit 1002 sends message to the old mobile management network element MME to service UE and obtains user or more
Text, the context include the domains the CS PLMN ID for the CS reception services UE for servicing UE;
Comparing unit 1003, the domains the CS PLMN/ operators of relatively more affiliated PLMN/ operators and service UE, if different by institute
It states the domains CS PLMN ID and is sent to BSC.
Processing unit 1004, if identical, allows the UE to connect if the domains the CS PLMN ID are sent to BSC by difference
Enter.
By above-described embodiment, when UE is moved to GERAN from LTE, the domains the CS PLMN ID for servicing UE are sent to by MME
Target mobility management network element (the first, second mobile management network element i.e. in the present embodiment), when target mobile management network
When the first domains PLMN with CS PLMN differences, the BSC that target mobility management network element sends the domains the CS PLMN, BSC is according to
The domains CS PLMN selects corresponding SGSN.Ensure that the affiliated domains PLMN with the CS PLMN of SGSN are consistent, improves user experience.
Correspondingly, the embodiment of the present invention also provides a kind of mobile network sharing device, mobile network sharing device can be
BSC, described device can refer to Figure 11, including:
First receiving unit 1101 receives the access request message of UE;
First transmission unit 1102 includes the message of the access request message to the forwarding of first movement managed network element;
Second receiving unit 1103, to receive the domains the CS PLMN id informations that the first movement managed network element is sent;
Selecting unit 1104, to according to the domains CS PLMN ID selections the second movement corresponding with the domains the CS PLMN
Property managed network element;
Second transmission unit 1105 includes disappearing for UE access request message to second mobile management network element transmission
Breath, keeps the ps domain of service UE identical with the domains the CS PLMN or operator.
By above-described embodiment, when UE is moved to GERAN from LTE, the domains the CS PLMN ID for servicing UE are sent to by MME
Target mobility management network element (the first, second mobile management network element i.e. in the present embodiment), when target mobile management network
When the first domains PLMN with CS PLMN differences, the BSC that target mobility management network element sends the domains the CS PLMN, BSC is according to
The domains CS PLMN selects corresponding SGSN.Ensure that the affiliated domains PLMN with the CS PLMN of SGSN are consistent, improves user experience.
Above-mentioned apparatus is just for the sake of realizing the virtual bench of the above method, and each unit is only for method and step stroke
The functional unit divided, those skilled in the art should understand that, in order to realize corresponding method, each unit can be integrated
In the same processor, it or by hardware realization, should not be construed as limiting the invention.
Professional should further appreciate that, described in conjunction with the examples disclosed in the embodiments of the present disclosure
Unit and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software generally describes each exemplary composition and step according to function in the above description.
These functions are implemented in hardware or software actually, depend on the specific application and design constraint of technical solution.
Professional technician can use different methods to achieve the described function each specific application, but this realization
It should not be considered as beyond the scope of the present invention.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can use hardware, processor to execute
The combination of software module or the two is implemented.Software module can be placed in random access memory(RAM), memory, read-only memory
(ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field
In any other form of storage medium well known to interior.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (19)
1. a kind of mobile network sharing method, which is characterized in that the method includes:
User equipment (UE) in Idle state is moved to GERAN from LTE network when sharing network, obtains UE CS in LTE network
Old PLMN ID or the old RAI in domain;
Select the corresponding PLMN of old PLMN ID or the old RAI as the ps domain for the GERAN networks for servicing the UE
PLMN, the PLMN of the ps domain are identical as the domains the CS PLMN that the UE is selected in the LTE network.
2. mobile network sharing method as described in claim 1, which is characterized in that acquisition UE CS in LTE network
Old PLMN ID or the old RAI in domain are specifically included:
The message for including old PLMN ID or old RAI that mobile management network element is sent is received, to obtain old PLMN
ID old RAI.
3. mobile network sharing method as claimed in claim 2, which is characterized in that select old the PLMN ID or old
The corresponding PLMN of RAI include as the PLMN of the ps domain for the GERAN networks for servicing the UE:
The corresponding PLMN selection strategies of PLMN ID or RAI, the old according to the UE is locally configured in access network element
PLMN ID or RAI ID are locally searching corresponding PLMN selection strategies, PLMN are selected to service UE.
4. a kind of mobile network sharing method, it is characterised in that the method includes:
Receive the access request information for the Idle state UE that GERAN networks are moved to from LTE network;
According to the old RAI information of UE described in the access request acquisition of information or old PLMN id informations;
The old RAI or old PLMN id informations are sent to base station controller BSC, so that BSC selects the old
PLMNs, the PLMN of the ps domain of the corresponding PLMN of RAI old PLMN ID as the ps domain of the GERAN networks of service UE
It is identical that the PLMN in the domains CS of UE is serviced in the LTE with the UE.
5. mobile network sharing method as claimed in claim 4, which is characterized in that it is described to BSC send the old RAI or
Further include after person old PLMN id informations,
UE is judged whether in the shared networks of GERAN, in the case where the UE is in GERAN and shares network, to BSC transmissions institute
State old RAI or old PLMN.
6. mobile network sharing method as claimed in claim 4, which is characterized in that it is described to BSC send the old RAI or
Further include after person old PLMN id informations,
Judge whether UE is moved to GERAN from LTE and shares network, if the UE is to be moved to GERAN from LTE to share network, to
BSC sends the old RAI or old PLMN.
7. mobile network sharing method as claimed in claim 6, which is characterized in that it is described judge the UE whether be from
LTE be moved to GERAN share network method be:
Know that the UE is moved to GERAN from LTE from UE, wherein the GERAN networks are shared network.
8. mobile network sharing method as claimed in claim 4, which is characterized in that described to be obtained according to the access request information
The old PLMN id informations of the UE are taken to be specially:
The old RAI information in access request information is obtained, it is old PLMN ID that PLMN information is read from old RAI.
9. a kind of mobile network sharing method, which is characterized in that the method includes:
Receive the access request information of UE;
The domains the CS PLMN for obtaining or selecting UE, selects the corresponding MME Code of the domains the CS PLMN;
The unique interim subscriber identity information in the whole world is sent to the UE, the unique interim subscriber identity information in the whole world includes described
MME Code, when UE is moved to GERAN networks from LTE network, the NRI of the MME Code mapping is for BSC selection services institute
The PLMN of the ps domain of the GERAN networks of UE is stated, the PLMN of the ps domain and UE services the PLMN phases in the domains CS of UE in LTE
Together.
10. mobile network sharing method as claimed in claim 9, which is characterized in that the domains the CS PLMN for obtaining UE is specific
For:
The domains the CS PLMN/ operator's informaitons of UE are received from mobile services switching centre.
11. mobile network sharing method as claimed in claim 9, which is characterized in that the MME Code be include the domains CS
The MME Code of ps domain NRI or the null NRI of PLMN.
12. such as claim 9-11 any one of them mobile network sharing methods, which is characterized in that when the PLMN is disposed
When SGSN pool or when multiple SGSN can service UE, the MME Code includes null NRI.
13. a kind of mobile network sharing method, which is characterized in that the method includes,
The message for including access request message of UE is received, wherein the access request message includes old RAI, the UE is not propped up
Hold GERAN network shares;
The message for including the access request message is sent to first movement managed network element;
The PLMN id informations in the domains CS for the service UE that the first movement managed network element is sent are received, wherein, the service UE
The PLMN ID in the domains CS got according to the old RAI;
The second mobility corresponding with the service PLMN in the domains CS of UE is selected according to the PLMN ID in the domains CS of the service UE
Managed network element;
Include the message of UE access request message to second mobile management network element transmission, makes the PLMN of the ps domain of service UE
It is identical that the PLMN in the domains CS of UE is serviced in LTE with the UE.
14. mobile network sharing method according to claim 13, which is characterized in that selected according to the domains the CS PLMN ID
The second mobile management network element corresponding with the domains the CS PLMN is selected, specially:
The GPRS serving GPRS support node SGSN of selection service CS domain PLMN, or;
The SGSN of the domains selection service CS PLMN operators.
15. according to the method for claim 13, which is characterized in that receive the CS that the first movement managed network element is sent
Domain PLMN id informations further include,
Receive the domains the CS PLMN id informations and international mobile subscriber identity IMSI letters that the first movement managed network element is sent
Breath.
16. a kind of mobile network sharing device, which is characterized in that described device includes:
Acquiring unit, for the UE in Idle state from LTE network be moved to GERAN share network when, obtain UE in LTE network
When the domains CS old PLMN ID or old RAI;
Selecting unit, for selecting the corresponding PLMN of old PLMN ID or the old RAI as the service UE's
The PLMN of the ps domain of GERAN networks;The domains the CS PLMN phases that the PLMN of the ps domain is selected with the UE in the LTE network
Together.
17. a kind of mobile network sharing device, which is characterized in that described device includes:
Receiving unit, to receive the access request information for the Idle state UE for being moved to GERAN networks from LTE network;
Acquiring unit, to according to the old RAI information of UE described in the access request acquisition of information or old PLMN ID letters
Breath;
Transmission unit sends the old RAI or old PLMN id informations, so that the BSC to base station controller BSC
Select the old RAI or the corresponding PLMN of old PLMN ID as the PLMN of the ps domain of the GERAN networks of service UE, institute
Stating the PLMN and the UE of ps domain, that the PLMN in the domains CS of UE is serviced in the LTE is identical.
18. a kind of mobile network sharing device, which is characterized in that described device includes:
Receiving unit, the access request information for receiving UE;
Acquiring unit, the domains the CS PLMN for obtaining or selecting UE select the corresponding MME Code of the domains the CS PLMN;
Transmission unit, for sending the unique interim subscriber identity information in the whole world, the unique interim subscriber identity in the whole world to the UE
Information includes the MME Code, and when UE is moved to GERAN networks from LTE network, the NRI of the MME Code mapping is used for
The PLMN, the PLMN of the ps domain and the UE that BSC selections service the ps domain of the GERAN networks of the UE service UE in LTE
The domains CS PLMN it is identical.
19. a kind of mobile network sharing device, which is characterized in that described device includes,
First receiving unit receives the access request message of UE, wherein the access request message includes old RAI, the UE
GERAN network shares are not supported;
First transmission unit includes the message of the access request message to the forwarding of first movement managed network element;
Second receiving unit is believed to receive the PLMN ID in the domains CS for the service UE that the first movement managed network element is sent
Breath, wherein the PLMN ID in the domains CS of the service UE are got according to the old RAI;
Selecting unit, to PLMN pairs according to the PLMN ID selections in the domains CS of the service UE with the domains CS of the service UE
The second mobile management network element answered;
Second transmission unit includes the message of UE access request message to second mobile management network element transmission, makes ps domain
PLMN that the PLMN in the domains CS of UE is serviced in LTE with the UE is identical.
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