CN103796264A - Method, device and system for selecting public land mobile network - Google Patents
Method, device and system for selecting public land mobile network Download PDFInfo
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- CN103796264A CN103796264A CN201410020929.0A CN201410020929A CN103796264A CN 103796264 A CN103796264 A CN 103796264A CN 201410020929 A CN201410020929 A CN 201410020929A CN 103796264 A CN103796264 A CN 103796264A
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Abstract
The embodiment of the invention relates to a method, device and system for selecting a public land mobile network. The method comprises the steps that eNodeB acquires PLMN information of a CSFB; the eNodeB determines a target cell switched by a packet switching domain according to the PLMN information of the CSFB. The PLMN information of the CSFB is acquired through the eNodeB, the eNodeB can determine the target cell switched by the packet switching domain according to the acquired PLMN information of the CSFB, therefore, the target cell is switched to a PLMN where an MSC/VLR attached to by UE in an EPS network is located, the situation that the eNodeB cannot sense the PLMN where the MSC/VLR attached to by the UE in the EPS network in the CSFNB process is located, different PLMNs are selected, and the additional processing delay of the CSFB process is caused is avoided, and the success rate of services is improved.
Description
Technical field
The embodiment of the present invention relates to mobile communication technology field, particularly system of selection, the Apparatus and system of a kind of public land mobile net (Public Land Mobile Network is called for short PLMN).
Background technology
Evolved universal mobile communication system land radio access web (Evolved Universal Mobile Telecommunication System Territorial Radio Access Network, be called for short E-UTRAN) and evolution block core net (Evolved Packet Core Network, be called for short EPC) form evolved packet system (Evolved Packet System, be called for short EPS).And due to operator at present a lot of business all operate in circuit (the Circuit Switching of 2G/3G, be called for short CS) in territory, in order to reuse existing CS territory business in EPS network, therefore proposed to be connected to CS domain core net by EPS network, thereby make subscriber equipment (User Equipment, be called for short UE) can initiate and receive CS business at EPS network, and get back to 2G/3G network by E-UTRAN and complete CS business, its network architecture and processing method can be called " circuit domain dropping " (CS Fallback is called for short CSFB).
In the above-mentioned CSFB flow process of execution, UE carries out to combine at E-UTRAN and adheres to/combine tracing section updating flow process from EPS network registry to CS domain core net equipment moving switching center/visitor location register on (Mobile Switching Center/Visitor Location Register, abbreviation MSC/VLR).In said process, Mobility Management Entity (Mobility Management Entity, be called for short MME) the suitable MSC/VLR of responsible selection, now according to the business setting of operator, MME may select an EPS network adhering to from UE to have the MSC/VLR of different public land mobile net marks (PLMN ID), thereby this UE is in the time that execution CSFB process falls back to 2G/3G network, and the PLMN at access MSC/VLR place, completes follow-up CS territory business.
A kind of method that execution CSFB process falls back to 2G/3G is evolved base station (Evolved NodeB, be called for short eNodeB) execution packet-switched domain switching (PS Handover, be called for short PS HO) flow process, for UE selects suitable target 2G/3G community, completing CSFB processes, mark is carried out by cell ID (Cell ID) in its small area, and cell ID comprises and the PLMN information under Liao Gai community in Cell ID, comprised PLMN ID.But eNodeB cannot perception combine adhere to/combine tracing section updating flow process in the PLMN ID at the selected MSC/VLR of MME place, now, PLMN ID under the selected Target cell of eNodeB may be different from the PLMN ID at the MSC/VLR place of above-mentioned MME selection, make eNodeB may belong to for the switching target 2G/3G community that this UE selects other PLMN, like this after UE is stationed this target 2G/3G community owing to having changed PLMN, this community is served by other MSC/VLR, thereby cause this UE essential executing location district before carrying out CS business to upgrade (Location Area Update, being called for short LAU) flow process is registered to this new MSC/VLR, for the called/situation of exhaling eventually, the MSC/VLR of the MSC/VLR that this is new and UE registration before also needs to carry out roaming retry (Roaming Retry) flow process to complete called flow, above-mentioned extra location area updating and roaming retry flow process have increased the processing delay of CSFB flow process, having reduced service success rate and user experiences.
Summary of the invention
The embodiment of the present invention provides a kind of public land mobile net (Public Land Mobile Network, be called for short PLMN) system of selection, Apparatus and system, in order to avoid the PLMN at the MSC/VLR place that eNodeB adheres to due to UE in cannot perception CSFB flow process in EPS network to select the extra process time delay of the CSFB flow process that different PLMN causes, improve service success rate.
The embodiment of the present invention provides a kind of system of selection of public land mobile net, comprising:
ENodeB is known the PLMN information of CSFB;
Described eNodeB, according to the PLMN information of described CSFB, determines the Target cell that packet-switched domain switches.
The embodiment of the present invention also provides a kind of evolved base station, comprising:
Know module, for knowing the PLMN information of CSFB;
Determination module, for according to the PLMN information of described CSFB, determines the Target cell that packet-switched domain switches.
The embodiment of the present invention also provides a kind of mobile management network element, comprises module is provided, and for the PLMN information of CSFB is provided to eNodeB, determines for described eNodeB the Target cell that packet-switched domain switches.
The embodiment of the present invention provides a kind of selective system of public land mobile net to comprise again:
Mobile management network element, for providing the PLMN information of CSFB;
Evolved base station, for knowing the PLMN information of described CSFB, according to the PLMN information of described CSFB, determines the Target cell that packet-switched domain switches.
As shown from the above technical solution, the embodiment of the present invention is known the PLMN information of CSFB by eNodeB, make the eNodeB can be according to the PLMN information of the CSFB of knowing, determine the Target cell that packet-switched domain switches, thereby be switched to the PLMN at the MSC/VLR place that UE adheres in EPS network, avoid the PLMN at the MSC/VLR place that eNodeB adheres to due to UE in cannot perception CSFB flow process in EPS network to select the extra process time delay of the CSFB flow process that different PLMN causes, improved service success rate.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic flow sheet of the system of selection of the public land mobile net that Fig. 1 provides for the embodiment of the present invention one;
The schematic flow sheet of the system of selection of the public land mobile net that Fig. 2 provides for the embodiment of the present invention two;
The schematic flow sheet of the system of selection of the public land mobile net that Fig. 3 provides for the embodiment of the present invention three;
The schematic flow sheet of the system of selection of the public land mobile net that Fig. 4 provides for the embodiment of the present invention four;
The schematic flow sheet of the system of selection of the public land mobile net that Fig. 5 provides for the embodiment of the present invention five;
The structural representation of the evolved base station that Fig. 6 provides for the embodiment of the present invention six;
The structural representation of the mobile management network element that Fig. 7 provides for the embodiment of the present invention seven;
The structural representation of the selective system of the public land mobile net that Fig. 8 provides for the embodiment of the present invention eight.
Embodiment
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, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The schematic flow sheet of the system of selection of the public land mobile net that Fig. 1 provides for the embodiment of the present invention one.As shown in Figure 1, the system of selection of the public land mobile net of the present embodiment can comprise the following steps:
The present embodiment is known the PLMN information of CSFB by eNodeB, make the eNodeB can be according to the PLMN information of the CSFB of knowing, determine the Target cell that packet-switched domain switches, thereby be switched to the PLMN at the MSC/VLR place that UE adheres in EPS network, avoid the PLMN at the MSC/VLR place that eNodeB adheres to due to UE in cannot perception CSFB flow process in EPS network to select the extra process time delay of the CSFB flow process that different PLMN causes, improved service success rate.
The schematic flow sheet of the system of selection of the public land mobile net that Fig. 2 provides for the embodiment of the present invention two, the present embodiment is applicable to UE and in EPS network, initiates CSFB and call out the scene of (being CSFB caller).As shown in Figure 2, the system of selection of the public land mobile net of the present embodiment can comprise the following steps:
Step 201, UE send service request (the Extended Service Request) message of expansion to MME, above-mentioned message comprises CSFB indication, shows that UE wishes to carry out CSFB;
Wherein, the PLMN information of above-mentioned CSFB refers to that in CSFB flow process MME is the information of PLMN under the MSC/VLR that selects of UE, for example: the PLMN mark (PLMN ID) of the PLMN under MSC/VLR.
The PLMN information that comprises this CSFB in the S1-AP request message that above-mentioned MME sends to eNodeB, its specific implementation can include but not limited to following several mode:
The PLMN information of A, CSFB is in above-mentioned S1-AP request message one independently parameter, can individualism, also can be a part for existing parameter in S1-AP request message, for example: can be included in and switch among restriction list (Handover Restriction List) parameter;
The PLMN information exchange of B, CSFB is crossed other parameters and is indirectly offered eNodeB, for example: MME can embody PLMN information by comprise location area (LAI) parameter in S1-AP request message, wherein, the PLMN ID comprising in LAI parameter is the PLMN ID of the selected CS of MME, and above-mentioned LAI parameter also can be included among switching restriction list (the Handover Restriction List) parameter of S1-AP request message;
The PLMN information of C, CSFB can be included in and be equal to PLMN(Equivalent PLMN, be called for short E-PLMN) in list, for example: the PLMN information of CSFB that MME is selected is placed on this and is equal to first of PLMN list, eNodeB can this PLMN of preferential choice for use, thereby guarantees that follow-up this PLMN that can select of eNodeB is as objective network; Also can in above-mentioned S1-AP request message, adopt an independently indication (for example: selected PLMN for CS), indication is equal to the PLMN information that comprises CSFB in PLMN list, and also can indicate which PLMN in E-PLMN list is the PLMN of CS.
In this step, above-mentioned S1-AP request message is specifically as follows initial context and sets up request (INITIAL CONTEXT SETUP REQUEST) message, can be also UE contextual modifications request (UE CONTEXT MODIFICATION REQUEST) message.
In this step, eNodeB, according to the PLMN information of described CSFB, determines that can there be following mode the Target cell that packet-switched domain switches:
The target that eNodeB can select the RNC in PLMN corresponding to the PLMN information of CSFB to switch as packet-switched domain; Or
The Target cell that eNodeB can select PLMN Nei community corresponding to the PLMN information of CSFB to switch as packet-switched domain.
In this step, in the time that the objective network switching is 3G or UTRAN, eNodeB is included in the PLMN information of above-mentioned CSFB in Target RNC mark (Target RNC ID), specifically above-mentioned PLMN ID can be included in the LAI parameter in Target RNC ID; In the time that the objective network switching is 2G or GERAN, the PLMN information of above-mentioned CSFB is included in target Cell Global Identification (Cell Global Identification by eNodeB, be called for short CGI) in, specifically above-mentioned PLMN ID can be included in the PLMN ID parameter in target CGI.
Above-mentioned steps 203 does not have sequencing with the execution of above-mentioned steps 204.
Step 205, eNodeB carry out PS HO flow process, and UE is moved to 2G/3G network;
In the present embodiment, select the target P LMN as PS HO for PLMN corresponding to the PLMN information of the CSFB of CS territory business by eNodeB, make UE can move to the 2G/3G network of above-mentioned target P LMN, can avoid triggering execution LAU flow process, the processing delay that has reduced CSFB flow process, has improved service success rate.
The schematic flow sheet of the system of selection of the public land mobile net that Fig. 3 provides for the embodiment of the present invention three, the present embodiment is applicable to UE and in EPS network, receives CSFB and call out the scene of (being that the called or CSFB of CSFB exhales eventually).As shown in Figure 3, the system of selection of the public land mobile net of the present embodiment can comprise the following steps:
Step 304, MME send application protocol (S1-AP) request message of S1 interface to eNodeB, comprise the PLMN information of the CSFB selecting in CSFB flow process in above-mentioned message;
Wherein, the PLMN information of above-mentioned CSFB refers to that in CSFB flow process MME is the information of PLMN under the MSC/VLR that selects of UE, for example: the PLMN mark (PLMN ID) of the PLMN under MSC/VLR.The concrete methods of realizing of the PLMN information that comprises this CSFB in the S1-AP request message that above-mentioned MME sends to eNodeB can, referring to the related content of step 202 in a upper embodiment, repeat no more herein.
In this step, above-mentioned S1-AP request message is specifically as follows initial context and sets up request (INITIAL CONTEXT SETUP REQUEST) message, can be also UE contextual modifications request (UE CONTEXT MODIFICATION REQUEST) message.
Step 306, eNodeB, according to the PLMN information of above-mentioned CSFB, determine the Target cell of PS HO, and eNodeB selects the target P LMN of PLMN corresponding to the PLMN information of above-mentioned CSFB as PS HO, thereby selects the Target cell in corresponding target P LMN.
Specific implementation can, referring to step 204 related content in a upper embodiment, repeat no more herein.
Above-mentioned steps 305 does not have sequencing with the execution of above-mentioned steps 306.
Step 307, eNodeB carry out PS HO flow process, and UE is moved to 2G/3G network;
In the present embodiment, select the target P LMN as PS HO for PLMN corresponding to the PLMN information of the CSFB of CS territory business by eNodeB, make UE can move to the 2G/3G network of above-mentioned target P LMN, can avoid triggering and carry out LAU flow process and roam retry flow process, the processing delay that has reduced CSFB flow process, has improved service success rate.
The schematic flow sheet of the system of selection of the public land mobile net that Fig. 4 provides for the embodiment of the present invention four, different with the embodiment of the present invention three from the invention described above embodiment bis-is, the invention described above embodiment bis-and the embodiment of the present invention three are applicable to be provided to eNodeB by MME the scene of the PLMN information of CSFB in calling procedure (comprising caller and called), the present embodiment is applicable to MME after combining and having selected MSC/VLR in adhering to/combine tracing section updating flow process, the PLMN information of the CSFB at the MSC/VLR place of selection is offered to the scene of eNodeB.As shown in Figure 4, the system of selection of the public land mobile net of the present embodiment can comprise the following steps:
Step 401, UE sends and adheres to request (Attach Request) message/tracing section updating request (TAU Request) message to MME, the type of attachment of above-mentioned Attach Request message indicates that it is combines the updating type that adheres to request (combined EPS/IMSI attach Request) or above-mentioned tracing section updating request message and indicates that it is associating tracking area/location area updating request (Combined Tracking Area/Location Area Update Request), associating tracking area/location area updating and IMSI International Mobile Subscriber Identity are adhered to request (combined Tracking Area/Location Area Update with IMSI attach Request),
Step 403, MME, according to the type of attachment indication in above-mentioned Attach Request message, carry out the position update flow of MSC/VLR, and MSC/VLR carries out corresponding CS position and upgrades processing, for example: this UE is registered to the processing such as HLR/HSS.
In above-mentioned steps, MME, according to information such as carrier policy, selects suitable MSC/VLR, and wherein, the PLMN(under the selected MSC/VLR of above-mentioned MME is the PLMN of CS) can from MME under PLMN different.
In this step, above-mentioned S1-AP request message is specifically as follows initial context and sets up request (INITIAL CONTEXT SETUP REQUEST) message, or can also be descending Non-Access Stratum transmission (DOWNLINK NAS TRANSPORT) message.MME sends to acceptance (Attach Accept) message/TAU of adhering to of UE to accept (TAU Accept) message and can be encapsulated in above-mentioned S1-AP request message.
The PLMN information of described CSFB be that in step 403, MME is the information of PLMN under the MSC/VLR that selects of UE, for example: the PLMN mark (PLMN ID) of the PLMN under MSC/VLR.The concrete methods of realizing of the PLMN information of described CSFB in S1-AP request message can, referring to the related content of step 202 in the invention described above embodiment bis-, repeat no more herein.
In the present embodiment, adhere to/combine tracing section updating flow process the PLMN information of the CSFB for CS territory business of selecting is offered to eNodeB combining by MME, follow-up execution CSFB flow process (such as CSFB caller or CSFB are called etc.) time, eNodeB can select the target P LMN of PLMN corresponding to the PLMN information of above-mentioned CSFB as PS HO, make UE can move to the 2G/3G network of above-mentioned target P LMN, can avoid triggering and carry out LAU flow process and roam retry flow process, the processing delay that has reduced CSFB flow process, has improved service success rate.
The schematic flow sheet of the system of selection of the public land mobile net that Fig. 5 provides for the embodiment of the present invention five, different with the embodiment of the present invention three from the invention described above embodiment bis-is, the invention described above embodiment bis-and the embodiment of the present invention three are applicable to be provided to eNodeB by MME the scene of the PLMN information of CSFB in calling procedure (comprising caller and called), the present embodiment was applicable to before calling out, and MME offers the PLMN information of the CSFB of selection the scene of eNodeB in service request procedure.As shown in Figure 5, the system of selection of the public land mobile net of the present embodiment can comprise the following steps:
In this step, above-mentioned S1-AP request message is specifically as follows initial context and sets up request (INITIAL CONTEXT SETUP REQUEST) message.
The PLMN information of described CSFB be to adhere to/combine in tracing section updating flow process combining, and MME is the information of the PLMN under the MSC/VLR that selects of UE, for example: the PLMN mark (PLMN ID) of the PLMN under MSC/VLR.The concrete methods of realizing of the PLMN information of described CSFB in S1-AP request message can, referring to the related content of step 202 in the invention described above embodiment bis-, repeat no more herein.
Step 503, eNodeB send S1-AP response message to MME, complete service request flow process, repeat no more herein.
In this step, above-mentioned S1-AP response message is specifically as follows initial context and has set up (INITIAL CONTEXT SETUP COMPLETE) message.
In the present embodiment, by MME, the PLMN information of the CSFB for CS territory business selecting is offered to eNodeB, follow-up eNodeB can select the target P LMN of PLMN corresponding to the PLMN information of above-mentioned CSFB as PS HO, make UE can move to the 2G/3G network of above-mentioned target P LMN, can avoid triggering and carry out LAU flow process and roam retry flow process, the processing delay that has reduced CSFB flow process, has improved service success rate.
It should be noted that: for aforesaid each embodiment of the method, for simple description, therefore it is all expressed as to a series of combination of actions, but those skilled in the art should know, the present invention is not subject to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.
In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part of detailed description, can be referring to the associated description of other embodiment.
The structural representation of the evolved base station that Fig. 6 provides for the embodiment of the present invention six, as shown in Figure 6, the evolved base station of the present embodiment can comprise knows module 61 and determination module 62.Wherein, know that module 61 knows the PLMN information of CSFB, determination module 62, according to the PLMN information of knowing the above-mentioned CSFB that module 61 is known, is determined the Target cell that packet-switched domain switches.
The evolved base station that in the invention described above embodiment mono-, in eNodeB, the embodiment of the present invention two, in eNodeB, the embodiment of the present invention three, in eNodeB, the embodiment of the present invention four, in eNodeB and the embodiment of the present invention five, the function of eNodeB all can be provided by the present embodiment realizes.
The present embodiment is known the PLMN information of CSFB by knowing module, make the determination module can be according to the PLMN information of the CSFB of knowing, determine the Target cell that packet-switched domain switches, thereby be switched to the PLMN at the MSC/VLR place that UE adheres in EPS network, avoid the PLMN at the MSC/VLR place that eNodeB adheres to due to UE in cannot perception CSFB flow process in EPS network to select the extra process time delay of the CSFB flow process that different PLMN causes, improved service success rate.
Further, the module 61 of knowing in the present embodiment specifically can be known the PLMN information of CSFB in the following way:
The S1-AP request message that A, reception MME send, comprises PLMN mark in above-mentioned S1-AP request message; Or
The S1-AP request message that B, reception MME send, comprises location area in above-mentioned S1-AP request message, comprises PLMN mark in above-mentioned location area; Or
The S1-AP request message that C, reception MME send, comprises in above-mentioned S1-AP request message and is equal to PLMN list or is equal to PLMN list and the indication information of the PLMN of the CS that indication is selected.
Further, determination module 62 in the present embodiment specifically can be selected PLMN corresponding to PLMN information of above-mentioned CSFB, the target P LMN switching as packet-switched domain, and select the Target cell in corresponding above-mentioned target P LMN, or can also preferentially select PLMN corresponding to PLMN information of above-mentioned CSFB, the target P LMN switching as packet-switched domain, and select the Target cell in corresponding above-mentioned target P LMN.
The structural representation of the mobile management network element that Fig. 7 provides for the embodiment of the present invention seven, as shown in Figure 7, the mobile management network element of the present embodiment can comprise provides module 71, for the PLMN information of CSFB is provided to eNodeB, determine for above-mentioned eNodeB the Target cell that packet-switched domain switches.
The mobile management network element that in the invention described above embodiment bis-, in MME, the embodiment of the present invention three, in MME, the embodiment of the present invention four, in MME and the embodiment of the present invention five, the function of MME all can be provided by the present embodiment is realized.
The present embodiment is by providing module that the PLMN information of CSFB is provided to eNodeB, make the eNodeB can be according to the PLMN information of the CSFB of knowing, determine the Target cell that packet-switched domain switches, thereby be switched to the PLMN at the MSC/VLR place that UE adheres in EPS network, avoid the PLMN at the MSC/VLR place that eNodeB adheres to due to UE in cannot perception CSFB flow process in EPS network to select the extra process time delay of the CSFB flow process that different PLMN causes, improved service success rate.
Further, the module 71 that provides in the present embodiment specifically can provide the PLMN information of CSFB in the following way:
A, send S1-AP request message to eNodeB, in above-mentioned S1-AP request message, comprise PLMN mark; Or
B, send S1-AP request message to eNodeB, in above-mentioned S1-AP request message, comprise location area, in above-mentioned location area, comprise PLMN mark; Or
C, send S1-AP request message to eNodeB, in above-mentioned S1-AP request message, comprise and be equal to PLMN list or be equal to PLMN list and the indication information of the PLMN of the CS that indication is selected.
The structural representation of the selective system of the public land mobile net that Fig. 8 provides for the embodiment of the present invention eight, as shown in Figure 8, the selective system of the public land mobile net of the present embodiment can comprise mobile management network element 81 and evolved base station 82.Wherein:
Mobile management network element 81, for providing the PLMN information of CSFB;
Evolved base station 82, for knowing the PLMN information of above-mentioned CSFB, according to the PLMN information of above-mentioned CSFB, determines the Target cell that packet-switched domain switches.
Evolved base station 82 in the selective system of the public land mobile net that in the invention described above embodiment mono-, in eNodeB, the embodiment of the present invention two, in eNodeB, the embodiment of the present invention three, in eNodeB, the embodiment of the present invention four, in eNodeB and the embodiment of the present invention five, the function of eNodeB all can be provided by the present embodiment realizes; Mobile management network element 81 in the selective system of the public land mobile net that in the invention described above embodiment bis-, in MME, the embodiment of the present invention three, in MME, the embodiment of the present invention four, in MME and the embodiment of the present invention five, the function of MME all can be provided by the present embodiment is realized.
The embodiment of the present invention is known the PLMN information of CSFB from MME by eNodeB, make the eNodeB can be according to the PLMN information of the CSFB of knowing, determine the Target cell that packet-switched domain switches, thereby be switched to the PLMN at the MSC/VLR place that UE adheres in EPS network, avoid the PLMN at the MSC/VLR place that eNodeB adheres to due to UE in cannot perception CSFB flow process in EPS network to select the extra process time delay of the CSFB flow process that different PLMN causes, improved service success rate.
It should be noted that: described in the invention described above embodiment, the PLMN information of CSFB can comprise following information:
The PLMN information of the MSC/VLR that in CSFB associating attaching process or associating tracing section updating process, MME selects; Or
The PLMN information in the CS territory that in CSFB associating attaching process or associating tracing section updating process, MME selects.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, in the time carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, magnetic disc or CDs.
Finally it should be noted that: above embodiment only, in order to technical scheme of the present invention to be described, is not intended to limit; Although the present invention is had been described in detail with reference to previous embodiment, those of ordinary skill in the art is to be understood that: its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (11)
1. a system of selection for public land mobile net, is characterized in that, comprising:
Evolved base station eNodeB is known the public land mobile net PLMN information of the circuit domain dropping CSFB of Mobility Management Entity MME selection;
Described eNodeB, according to the PLMN information of described CSFB, determines the Target cell that packet-switched domain switches, PLMN Nei community corresponding to PLMN information that described Target cell is described CSFB.
2. method according to claim 1, is characterized in that, described eNodeB knows that the PLMN information of the CSFB of MME selection comprises:
Described eNodeB receives the S1-AP request message that described MME sends, and described S1-AP request message comprises the PLMN information of described CSFB, and described PLMN information is PLMN mark; Or
Described eNodeB receives the S1-AP request message that described MME sends, and described S1-AP request message comprises location area, and described location area comprises the PLMN information of described CSFB, and described PLMN information is PLMN mark; Or
Described eNodeB receives the S1-AP request message that described MME sends, and described S1-AP request message comprises described PLMN information, and described PLMN information is to be equal to PLMN list or to be equal to PLMN list and the indication information of the PLMN of the CSFB that indication is selected.
3. method according to claim 2, is characterized in that, the S1-AP request message that described eNodeB receives described MME transmission comprises:
Described eNodeB receives the initial context of described MME transmission and sets up request message; Or
Described eNodeB receives the UE contextual modifications request message that described MME sends.
4. according to the method described in arbitrary claim in claim 1～3, it is characterized in that, described eNodeB, according to the PLMN information of described CSFB, determines that the Target cell that packet-switched domain switches comprises:
In the time that the objective network of described packet-switched domain switching is 3G or UTRAN, described eNodeB is included in the PLMN information of described CSFB in Target RNC ID parameter; Or
In the time that the objective network of described packet-switched domain switching is 2G or GERAN, described eNodeB is included in the PLMN information of described CSFB in target CGI parameter.
5. method according to claim 1, is characterized in that, the PLMN information of described CSFB comprises:
The PLMN information of the MSC/VLR that described in CSFB associating attaching process or associating tracing section updating process, MME selects; Or
The PLMN information in the CS territory that described in CSFB associating attaching process or associating tracing section updating process, MME selects.
6. an evolved base station, is characterized in that, comprising:
Know module, for the public land mobile net PLMN information of circuit domain dropping CSFB of knowing that mobile management examination question MME selects;
Determination module, for according to the PLMN information of described CSFB, determines the Target cell that packet-switched domain switches, PLMN Nei community corresponding to PLMN information that described Target cell is described CSFB.
7. evolved base station according to claim 6, is characterized in that, described in know module specifically for
Receive the S1-AP request message that described MME sends, described S1-AP request message comprises the PLMN information of described CSFB, and described PLMN information is PLMN mark; Or
Receive the S1-AP request message that described MME sends, described S1-AP request message comprises location area, and described location area comprises the PLMN information of described CSFB, and described PLMN information is PLMN mark; Or
Receive the S1-AP request message that described MME sends, described S1-AP request message comprises described PLMN information, and described PLMN information is to be equal to PLMN list or to be equal to PLMN list and the indication information of the PLMN of the CS that indication is selected.
8. according to the evolved base station described in claim 6 or 7, it is characterized in that, described determination module specifically for
In the time that the objective network of described packet-switched domain switching is 3G or UTRAN, the PLMN information of described CSFB is included in Target RNC ID parameter; Or
In the time that the objective network of described packet-switched domain switching is 2G or GERAN, the PLMN information of described CSFB is included in target CGI parameter.
9. a mobile management network element, is characterized in that, comprises and selects module and module is provided;
Described selection module, for selecting the Public Land Mobile Nerwork PLMN information of circuit domain dropping CSFB;
The described module that provides, for the PLMN information of described CSFB is provided to evolved base station eNodeB, determines according to the PLMN information of described CSFB the Target cell that packet-switched domain switches for described eNodeB; Wherein, PLMN Nei community corresponding to PLMN information that described Target cell is described CSFB.
10. mobile management network element according to claim 9, is characterized in that, described in provide module specifically for
Send S1-AP request message to described eNodeB, described S1-AP request message comprises the PLMN information of described CSFB, and described PLMN information is PLMN mark; Or
Send S1-AP request message to described eNodeB, described S1-AP request message comprises location area, and described location area comprises the PLMN information of described CSFB, and described PLMN information is PLMN mark; Or
Send S1-AP request message to described eNodeB, described S1-AP request message comprises the PLMN information of described CSFB, and described PLMN information is to be equal to PLMN list or to be equal to PLMN list and the indication information of the PLMN of the CS that indication is selected.
The selective system of 11. 1 kinds of public land mobile nets, is characterized in that, comprising:
Evolved base station as described in as arbitrary in claim 6-8 and the mobile management network element as described in claim 9 or 10.
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