CN101969675B - Method and system for selecting enhanced mobile switching center (eMSC) server - Google Patents
Method and system for selecting enhanced mobile switching center (eMSC) server Download PDFInfo
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Abstract
The invention discloses a method for selecting an enhanced mobile switching center (eMSC) server, which comprises the following steps that: user equipment (UE) initiates position updating and attaches to the common mobile switching center (MSC) server; when determining that the UE is Internet protocol multimedia subsystem centralized service (ICS) UE, the common MSC server informs the UE of reselecting the eMSC server; and the UE initiates the position updating again and selects the eMSC server to attach. The invention also provides a system for selecting the eMSC server. Based on the method and the system, the ICS UE can reselect the eMSC server to attach when selecting the common MSC server without the ICS capability to attach.
Description
Technical field
The present invention relates to the communications field, refer to especially a kind of system of selection and system that strengthens Mobile Switching Center Server.
Background technology
Network interconnection agreement (IP, Internet Protocol) IP multimedia subsystem, IMS (IMS, IP Multimedia Core Network Subsystem) be a kind of IP-based network architecture being proposed by 3G (Third Generation) Moblie partner program (3rd Generation Partnership Project), it has built an opening and service environment flexibly, support multimedia application, can provide abundant multimedia service for user.
IMS and access technology are irrelevant, except being GPRS (GPRS, General Packet Radio Service), WLAN (wireless local area network) (WLAN, Wireless Local Area Network) grouping (PS such as, Packet Switching) access network provides outside business, can also be global system for mobile communications (GSM, Global System for Mobile communications), unify the mobile cellular networks such as mobile communcations system (UMTS, Universal Mobile Telecommunications System) business is provided.
The mobile communications network such as GSM, UMTS adopts circuit-switched technology, is called circuit (CS, Circuit Switched) territory, can provide basic speech business for user, and the supplementary service based on speech business.When CS territory access IMS, it develops into a kind of access way, and business provides by IMS is unified completely, and this technology is called IMS centralized traffic (ICS, IMS Centralized Service).
Figure 1 shows that the application scenarios schematic diagram of ICS, wherein, IMS subscriber equipment (UE, User Equipment) 101 is linked into IMS105 by PS access network 102, by IMS network, provides business; Adopt ICS technology, CS UE103 is linked into IMS105 by CS access network 104, by IMS network, provides business, and so, IMS network can be for adopting the UE of different access waies that business is provided.
Figure 2 shows that the configuration diagram of ICS, comprise: CS UE201, strengthen Mobile Switching Center Server (eMSC Server, enhanced-Mobile Switch Center Server) 202, media gateway (MGW, Media Gateway) 203, CSCF (CSCF, Call Session Control Function) entity 204, application server (AS, Application Server) 205, and home subscriber server (HSS, Home Subscriber Server)/attaching position register (HLR, Home Location Register) 206.
Wherein, eMSC Server202 is the enhancing of CS territory MSC Server, except completing the access, mobile management, CCF of CS UE201, also serve as session initiation protocol (SIP, Session Initiation Protocol) user agent, realize the conversion between CS signaling and sip message, replace CS UE201 access IMS.
CS UE201 is linked into eMSC Server202 by CS control signal; EMSC Server202 serves as user agent, the CSCF entity 204 that replaces CS UE201 access IMS network, and set up session connection with remote subscriber, simultaneously eMSC Server202 controls MGW203 and completes Media Stream on CS access bearer and the conversion between the Media Stream in IP carrying, sets up CS UE201 and is connected with the media between remote subscriber.
CSCF entity 204 is further divided into inquiry CSCF(I-CSCF, Interrogating CSCF) and service (S-CSCF, Serving CSCF), wherein I-CSCF be responsible for HSS/HLR206 in HSS mutual, request HSS is that CS UE201 distributes S-CSCF, or the residing S-CSCF of inquiry CS UE201; S-CSCF provides the functions such as registration, calling control for CS UE201.
Application server AS 205 is positioned at IMS, comprises business continuance server, telephone service server etc., and the services such as business continuance, telephone service can be provided for CS UE201.
HSS/HLR206 preserves the subscription data of CS UE201, for calling out or session provides support.HLR can think the subset of HSS, for traditional CS territory and the service of PS territory, HLR can close and be located in same physical entity with HSS, also can be divided in different physical entities, now between HLR and HSS, there is interface, and pass through the mutual of this Interface realization information.
Fig. 3 is the register flow path of ICS in prior art, and this flow process emphasis has been described position updating process and the IMS registration process in CS territory, has ignored safety certification process wherein, CS user data insertion process, and this flow process comprises as shown in Figure 3:
Step 301, UE initiates CS territory attaching process, to eMSC Server, sends attachment position update request, carries user ID: international mobile subscriber identity (IMSI, International Mobile Subscriber Identity) in this request.
Step 302, eMSC Server sends position updating request to HSS/HLR, to obtain user data.
Step 303, HSS/HLR upgrades response to eMSC Server home position.
HSS/HLR sends user data to eMSC Server when upgrading response to eMSC Server home position, and in user data or position upgrade and in response, to insert ICS indication, this indication be used for illustrating this user contracted ICS business, this user is ICS user.
Step 304, eMSC Server returns to adhere to UE and receives response, shows that UE adheres to successfully at eMSC Server.
Above-mentioned steps 301～304 is position update flow; Step 305 to step 316 is IMS register flow path.
Step 305, UE is after eMSC Server adheres to successfully, eMSC Server carries out this user's IMS registration decision-making: if in user data or position is upgraded in response, contain ICS indication, when this user is ICS user, eMSC Server determines to replace this ICS user to initiate IMS registration.
Step 306, eMSC Server judges this ICS user's ownership place according to this ICS user's sign IMSI, and determines the address that its IMS entry address is I-CSCF.
Step 307, eMSC Server sends SIP registration request according to definite I-CSCF address to I-CSCF, the privately owned sign and the public identify that in this request, comprise this user who determines according to user ID IMSI, and the access way that comprises this user indication, if the access way of this ICS user in this flow process is CS access, this access way indication can represent that SIP registration request is from eMSC Server.
Step 308, I-CSCF sends S-CSCF to HSS and distributes request, and request HSS is user assignment S-CSCF.
Step 309, after HSS is user assignment S-CSCF, sends S-CSCF assignment response to I-CSCF, and be expressed as user assignment S-CSCF and complete, and the S-CSCF information that comprises distribution.
Step 310, I-CSCF is forwarded to SIP registration request according to S-CSCF assignment response the S-CSCF of appointment.
Step 311, S-CSCF indicates by the access way in SIP registration request, while judging this registration request from eMSC Server, skips user's identifying procedure, directly to HSS, sends user data download request, the subscription data of request download user.
Step 312, HSS returns to user data to S-CSCF and downloads response, and this respond packet is containing user's subscription data.
Step 313, S-CSCF returns to the SIP response of succeeding in registration to I-CSCF, and S-CSCF has set up register binding, i.e. this user's public identify and the corresponding relation of eMSC Server address simultaneously.
Step 314, I-CSCF forwards the SIP response of succeeding in registration to eMSC Server.
Step 315, S-CSCF, according to the initial filter standard or norm of user's subscription data, triggers the third party logon procedure, sends third-party registration request, and by this request, to AS, send this user's third-party registration information to AS.
Step 316, AS returns to third-party registration success response to S-CSCF.
So far, eMSC Server replaces UE to complete IMS registration.
Flow process shown in above-mentioned Fig. 3 is only applicable to eMSC Server, but the scene that likely has common MSC Server and eMSC Server and deposit in core net, when ICS user has selected a common MSC Server to adhere to, because common MSC Server does not possess ICS ability, cause it cannot replace UE to carry out IMS registration; And have a kind of effective settling mode to make UE now can reselect eMSC Server in prior art, do not adhere to, therefore can cause the IMS register flow path of above-mentioned steps 305～316 to carry out, thereby can affect the realization of user ICS business.
Summary of the invention
In view of this, main purpose of the present invention is to provide system of selection and the system of a kind of eMSC Server, can make ICS user when the common MSC Server that has selected not possess ICS ability adheres to, and reselects eMSC Server and adheres to.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides a kind of system of selection that strengthens Mobile Switching Center Server, the method comprises:
User equipment (UE) launch position upgrades, and is attached to common mobile switching center server MSC Server;
When described common MSC Server judges described UE as network interconnection protocol multi-media sub-system centralized traffic ICS UE, described common MSC Server obtains ICS customer location district information LAI corresponding with eMSC Server in MSC Server pond from local data base, and notice UE gravity treatment strengthens Mobile Switching Center Server eMSC Server;
Described UE launch position upgrades, and reselects described eMSC Server and adheres to.
Wherein, described UE launch position upgrades, and is attached to common MSC Server, is specially:
Described UE sends attachment position update request to base station radio network controller RNC;
Described RNC chooses described common MSC Server according to described attachment position update request from current MSC Server pond;
Described RNC is transmitted to described common MSC Server by described attachment position update request.
Described common MSC Server judges that described UE, as ICS UE, is specially:
Described common MSC Server confirms the home subscriber server/home location register HSS/HLR of the ownership place of described UE according to the international mobile subscriber identity IMSI of UE in described attachment position update request, and sends position updating request to described HSS/HLR;
Described HSS/HLR returns to the position renewal response of carrying ICS indication to described common MSC Server according to described position updating request;
Described common MSC Server, according to described ICS indication, judges that described UE is as ICS UE;
Or described common MSC Server, according to the User Identity section in described IMSI, judges that UE is as ICS UE.
Described common MSC Server notice UE gravity treatment eMSC Server, is specially:
Response is upgraded to UE in the position that described common MSC Server carries ICS LAI by described RNC transmission, notice UE gravity treatment eMSC Server;
Accordingly, the method further comprises: UE judges that described position upgrades ICS LAI that response carries when inconsistent with the ICS LAI in wireless broadcast channel, described UE launch position renewal again.
Described UE again launch position upgrades, and chooses eMSC Server and adheres to, and is specially:
The attachment position update request that described ICS LAI is carried in described UE transmission is to described RNC;
Described RNC chooses the eMSC Server in current MSC Server pond according to described ICS LAI, and sends attachment position update request to the eMSC Server of described selection.
Described common MSC Server notice UE gravity treatment eMSC Server, is specially:
Described common MSC Server returns to RNC the attachment position that Reason For Denial is " gravity treatment eMSC Server " and upgrades refuse information; RNC upgrades refuse information notice UE gravity treatment eMSC Server according to described attachment position.
Described RNC upgrades refuse information notice UE gravity treatment eMSC Server according to described attachment position, is specially:
Described RNC judge self whether buffer memory described attachment position update request;
Described RNC buffer memory during described attachment position update request, RNC upgrades the Reason For Denial " gravity treatment eMSC Server " of refuse information according to described attachment position, UE and the service connection of self are set and are designated " gravity treatment eMSC Server ", notice UE gravity treatment eMSC Server;
When described RNC does not have described in buffer memory attachment position update request, RNC upgrades refuse information by described attachment position and is transmitted to described UE, notice UE gravity treatment eMSC Server.
Described UE is when launch position upgrades again, and the method also comprises:
Described RNC buffer memory during attachment position update request, RNC is according to described service connection sign " gravity treatment eMSC Server ", judge that position that the corresponding UE of described attachment position update request initiates is updated to ICS position and upgrades, and reselect eMSC Server for UE;
When described RNC does not have buffer memory attachment position update request, the attachment position that UE forwards according to RNC upgrades refuse information, to RNC, resends attachment position update request; ICS in the attachment position update request resending described in RNC foundation adheres to sign, and the position that the corresponding UE of attachment position update request that judgement resends initiates is again updated to ICS position and upgrades, and reselects eMSC Server for described UE.
Described UE chooses eMSC Server and adheres to, and is specially:
Described RNC chooses the eMSC Server in current eMSC Server pond from the eMSC Server list in its data storehouse;
The eMSC Server choosing described in described RNC sends to the attachment position update request of self buffer memory or attachment position update request that UE resends, makes UE state the eMSC Server choosing described in being attached to.
The present invention also provides a kind of selective system that strengthens Mobile Switching Center Server, and this system comprises: UE, common MSC Server and eMSC Server, wherein,
Described UE, upgrades for launch position, and is attached to described common MSC Server; Also when notifying self gravity treatment eMSC Server at described common MSC Server, launch position upgrades again, and selects eMSC Server to adhere to;
Described common MSC Server for when judging described UE as ICS UE, obtains ICS customer location district information LAI corresponding with eMSC Server in MSC Server pond from local data base, notifies described UE gravity treatment eMSC Server;
Described eMSC Server is used for, and when described UE again launch position upgrades, accepts adhering to of described UE.
The selection scheme of eMSC Server of the present invention, when common MSC Server judges UE as ICS UE, refusal ICS UE adheres to; And by position, upgrade the mode that response carries the ICS customer location district information that eMSC Server is corresponding (LAI, Location Area Identification) and inform that UE reselects the eMSC Server that ICS LAI is corresponding and adheres to, completing place is upgraded; Or, by sending attachment position renewal refuse information, inform that UE need to reselect eMSC Server and adhere to, while base station radio network controller (RNC, Radio Network Controller), can be according to " gravity treatment eMSC Server " sign of UE and RNC service connection, or the ICS in the attachment position update request resending according to UE adheres to sign, again from the eMSC Server list of self, choose eMSC Server; So, based on the solution of the present invention, can make ICS UE when the common MSC Server that has selected not possess ICS ability adheres to, can also reselect eMSC Server and adhere to.
Accompanying drawing explanation
Fig. 1 is the application scenarios schematic diagram of ICS;
Fig. 2 is the configuration diagram of ICS;
Fig. 3 is the register flow path of ICS in prior art;
Figure 4 shows that MSC Server of the present invention pond schematic network structure;
Figure 5 shows that the system of selection schematic flow sheet of eMSC Server of the present invention;
Figure 6 shows that the schematic flow sheet of the system of selection embodiment mono-of eMSC Server of the present invention;
Figure 7 shows that the schematic flow sheet of the system of selection embodiment bis-of eMSC Server of the present invention;
Figure 8 shows that the selective system structural representation of eMSC Server of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the present invention is further elaborated.
As shown in Figure 4, a RNC can be connected to a plurality of MSC Server to the applicable network configuration of eMSC Server of the present invention system of selection; Above-mentioned a plurality of MSC Server forms a resource pool, is MSC Server pond, common MSC Server and eMSC Server deposit in this MSC Server pond; This MSC Server pond can connect a plurality of RNC simultaneously simultaneously.RNC is that UE selects the MSC Server adhering to, and by MSC Server, replaces UE to carry out IMS registration, and MSC Server is herein eMSC Server, because common MSC Server does not possess ICS ability, cannot replace UE to carry out IMS registration.
The applicable scene of eMSC Server of the present invention system of selection is: ICS subscriber equipment, be that ICS UE has first adhered to a common MSC Server by RNC, but because common MSC Server cannot replace ICS UE, carry out IMS registration, be the flow process of step 305 to 316 in execution graph 3, therefore, ICS UE need to reselect an eMSC Server and adheres to.As can be seen here, eMSC Server of the present invention system of selection is mainly the improvement of carrying out for the position update flow shown in Fig. 3.
The system of selection schematic flow sheet that Figure 5 shows that eMSC Server of the present invention, comprising:
Below in conjunction with specific embodiment, the scheme shown in Fig. 5 is described, Figure 6 shows that the schematic flow sheet of the system of selection embodiment mono-of eMSC Server of the present invention, comprising:
Step 601, UE sends attachment position update request to RNC.
When user starts shooting, UE starting position is new technological process more.UE sends an attachment position update request to RNC, with this, initiates adhering to MSC Server.In this attachment position update request, at least carry this user's user ID: IMSI, can also carry the current location area information of this user.
Step 602, RNC is transmitted to common MSC Server by attachment position update request.
When RNC receives attachment position update request, preferably, select at random a MSC Server to adhere to; RNC also can, according to the load sharing of MSC Server, select a lighter MSC Server of load to adhere to from the MSC Server pond of its connection; RNC also can select to administer lane place and the highest MSC Server of the current lane place registration of this user adheres to.
That in the method for the invention, suppose that RNC in this step selects is a common MSC Server.
Then RNC is transmitted to selected common MSC Server by attachment position update request.
Step 603, common MSC Server sends position updating request to HSS/HLR.
Common MSC Server receives after attachment position update request, determines this user's ownership place according to IMSI, and sends position updating request to the HSS/HLR of this user ascription area, to obtain this user's user data.
Step 604, HSS/HLR sends position to common MSC Server and upgrades response.
The HSS/HLR of user ascription area receives position updating request, user data is sent to common MSC Server, and home position upgrades response, simultaneously, the HSS/HLR of ownership place upgrades in user data or position and in response, inserts ICS indication, and this ICS indication is used to indicate this user for ICS user, this UE is ICS UE.
Step 605, common MSC Server judges that UE, as ICS UE, refuses adhering to of this ICS UE, and obtains ICS LAI.
When ICS indication is contained in upgrading and responding in common MSC Server judgement user data or position, confirm that this user is ICS UE, refuses adhering to of this ICS UE.
Because common MSC Server does not have ICS ability, therefore, common MSC Server can not replace UE to carry out follow-up IMS register flow path, and UE need to reselect an eMSC Server and adhere to.First, the ICS LAI of eMSC Server administration in the MSC Server pond that obtains its place by current common MSC Server.The customer location district information of eMSC Server administration, be ICS LAI by the local data base of static configuration each MSC Server in MSC Server pond, ICS LAI and eMSC Server are relations one to one.Common MSC Server gets after ICS LAI, is filled up to position and upgrades in the Location Area Identification field of response.
Owing to may containing a plurality of eMSC Server in a MSC Server pond, therefore, when common MSC Server obtains ICS LAI, can obtain at random as required the customer location district information of an eMSC Server administration.
ICS LAI can be a virtual location information, and it mainly contains following effect: the one, and indication UE re-starts position and upgrades; The one,, by ICS LAI, can be associated with eMSC Server.
If it is pointed out that ICS LAI that current common MSC Server obtains, be that the customer location district information of the eMSC Server administration location area information current with UE is identical, just launch position renewal again of UE; Therefore, ICS LAI that the present invention herein requires common MSC Server the to obtain location area information current from UE is different, thereby can guarantee that UE receives position and upgrades after response, and launch position upgrades again.
In addition, when common MSC Server judges UE as ICS UE, can also adopt following mode: common MSC Server self static configuration has the corresponding relation of User Identity section and ICS UE, User Identity section according to UE is mated in above-mentioned corresponding relation, just can learn whether this UE is ICS UE.Wherein, User Identity section is present in IMSI.
Step 606, common MSC Server upgrades response (carrying ICS LAI) by RNC by position and sends to UE, notice UE gravity treatment eMSC Server.
Common MSC Server upgrades response by the position of the above-mentioned ICS of carrying LAI and sends to UE by RNC, to notify UE need to reselect eMSC Server.UE if desired reselects eMSC Server, needs again launch position to upgrade, concrete as follow-up step.
Wherein, ICS LAI is the customer location district information of eMSC Server administration in current MSC Server pond.
Step 607, judges that the ICS LAI in ICS LAI and wireless broadcast channel is inconsistent.
UE receives this position and upgrades after response, the value of Location Area Identification field in the value of Location Area Identification field wherein and current wireless broadcast channel is compared, the customer location district information and the current location area information of UE that are about to eMSC Server administration compare, if consistent, UE can not re-start position renewal; If inconsistent, UE launch position renewal again.
Step 608, UE resends attachment position update request and carries ICS LAI to RNC().
UE again launch position upgrades, and generates attachment position update request and sends to RNC.In the attachment position update request that this resends, carry position and upgrade the ICS LAI in response.
Step 609, RNC reselects eMSC Server.
Due to ICS LAI indication be the customer location district information of eMSC Server administration, therefore, preferably, in the local data base of RNC, preserved the corresponding relation of customer location district information and eMSC Server.RNC is according to the ICS LAI in position updating request, can find the eMSC Server of coupling at self database.
Step 610, RNC sends position updating request to eMSC Server.
RNC sends attachment position update request to the eMSC Server selecting, and UE is attached on this eMSC Server.In this attachment position update request, can not carry above-mentioned position and upgrade the ICS LAI in response.
Step 611, follow-up existing position update flow.
Follow-up position update flow is with step 303～304 in Fig. 3.And then replace UE to carry out the register flow path of IMS by eMSC Server, as step 305～316 in Fig. 3.
The schematic flow sheet that Figure 7 shows that the system of selection embodiment bis-of eMSC Server of the present invention, comprising:
Step 701, UE sends attachment position update request to RNC.
The processing of this step is identical with step 601, repeats no more herein.
Different, this attachment position update request can not carried the current location area information of user.
Step 702, RNC is transmitted to common MSC Server by attachment position update request.
The processing of this step is identical with step 701, repeats no more herein.
Different is, the attachment position update request that RNC can select buffer memory UE to send, if RNC buffer memory attachment position update request, so when RNC receives position that MSC Server sends and upgrades response in follow-up flow process, as Fig. 3 in step 303, can discharge the attachment position update request of buffer memory.
Step 703, common MSC Server sends position updating request to HSS/HLR.
Step 704, HSS/HLR sends position to common MSC Server and upgrades response.
The processing of step 703～704 is identical with step 603～604, repeats no more herein.
Step 705, common MSC Server judges that UE is as ICS UE, refusal UE adheres to.
When ICS indication is contained in upgrading and responding in common MSC Server judgement user data or position, confirm that this UE is ICS UE, refusal UE adheres to.
Step 706, common MSC Server returns to attachment position to RNC and upgrades refuse information, and Reason For Denial is " gravity treatment eMSC Server ".
Because common MSC Server does not have ICS ability, therefore, common MSC Server can not replace UE to carry out follow-up IMS register flow path, and UE need to reselect an eMSC Server and adhere to.Therefore common MSC Server returns to attachment position renewal refuse information to RNC, refusal UE adheres to, and the Reason For Denial of this message is set to " gravity treatment eMSC Server ", RNC upgrades refuse information notice UE according to attachment position and carries out the gravity treatment of eMSC Server.
Step 707, judge RNC whether buffer memory attachment position update request, if not, proceed to step 708; If so, proceed to step 710.
RNC judge self whether buffer memory the attachment position update request that sends of UE, if not, proceed to step 708; If so, proceed to step 710.
If it is pointed out that RNC needs buffer memory attachment position update request, in step step 702, carry out.
Step 708, RNC upgrades refuse information by attachment position and is transmitted to UE, notice UE gravity treatment eMSC Server.
When RNC does not have the attachment position update request of buffer memory UE transmission, RNC upgrades refuse information (Reason For Denial is " gravity treatment eMSC Server ") by attachment position and is transmitted to UE, with this, notifies UE need to reselect eMSC Server.
Step 709, UE sends attachment position update request to RNC, proceeds to step 711.
During UE gravity treatment eMSC Server, launch position upgrades again, first to RNC, sends attachment position update request.
UE receives that attachment position upgrades after refuse information, and while judging Reason For Denial as " gravity treatment eMSC Server ", launch position upgrades again, generates attachment position update request, and sends to RNC.Preferably, UE can arrange an ICS and adhere to sign in attachment position update request, is used to indicate the current position of again initiating of UE and is updated to the renewal of ICS position.
Step 710, the service connection that RNC arranges UE and RNC is designated " gravity treatment eMSC Server ".
When attachment position update request that RNC buffer memory UE sends, the attachment position that RNC sends according to common MSC Server upgrades refuse information (Reason For Denial " gravity treatment eMSC Server "), the service connection sign of current UE and RNC is set to " gravity treatment eMSC Server ", and the service connection of current UE and RNC is the position that the corresponding UE of attachment position update request of RNC buffer memory initiates by RNC and upgrades.
Although common MSC Server has refused adhering to of UE, position that UE initiates by RNC is upgraded and is not finished, so UE corresponding to this position updating process and the service connection of RNC are not released.
RNC now this service connection sign is set to " gravity treatment eMSC Server ", and this position updating process that the clear and definite indication UE of take initiates upgrades as ICS position.
Step 711, RNC judges that position is updated to ICS position and upgrades, and reselects eMSC Server.
The judgement of this step is divided into two kinds of situations:
The one,, accept step 709, RNC adheres to sign according to the ICS in the attachment position update request receiving, and judges that the position that UE initiates is again updated to the renewal of ICS position.
The one,, accept step 710, when RNC buffer memory UE send attachment position update request time, for this attachment position update request, judge that the current position of UE is updated to ICS position and upgrades, concrete, according to the service connection sign " gravity treatment eMSC Server " of UE and RNC, judge that the current position of UE is updated to ICS position and upgrades.
RNC judges when position is updated to the renewal of ICS position, carries out the selection of eMSC Server.Preferably, the list of eMSC Server in default current MSC Server pond in the local data base of RNC, RNC chooses at random an eMSC Server from the list of this eMSC Server, as UE, adheres to MSC Server.
Step 712, RNC is transmitted to eMSC Server by attachment position update request.
RNC is transmitted to selected eMSC Server by attachment position update request, and request eMSC Server accepts adhering to of UE.
It is pointed out that eMSC Server accepted after adhering to of UE, to RNC home position, upgrade response as step 303 in Fig. 3; If before RNC buffer memory UE start the attachment position update request sending, so now, RNC discharges this buffer memory, then carries out follow-up position update flow.
Step 713, follow-up existing position update flow.
Follow-up position update flow is with step 303～304 in Fig. 3.And then replace UE to carry out the register flow path of IMS by eMSC Server, as step 305～316 in Fig. 3.
In order to realize above-mentioned eMSC Server system of selection, the present invention also provides the selective system of a kind of eMSC Server, as shown in Figure 8, comprising: UE10, common MSC Server20 and eMSC Server30, wherein,
UE10, upgrades for launch position, and is attached to common MSC Server20; Also when notifying self gravity treatment eMSC Server30 at common MSC Server20, launch position upgrades again, and selects eMSC Server30 to adhere to;
Common MSC Server20, for when judging UE10 as ICS UE, notice UE10 gravity treatment eMSC Server30;
EMSC Server30 is used for, and when UE10 again launch position upgrades, accepts adhering to of UE10.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (7)
1. strengthen a system of selection for Mobile Switching Center Server, it is characterized in that, the method comprises:
User equipment (UE) launch position upgrades, and is attached to common mobile switching center server MSC Server;
When described common MSC Server judges described UE as network interconnection protocol multi-media sub-system centralized traffic ICS UE, described common MSC Server obtains ICS customer location district information LAI corresponding with eMSC Server in MSC Server pond from local data base, and to base station radio network controller RNC, returns to the attachment position that Reason For Denial is " gravity treatment eMSC Server " and upgrade refuse information; RNC upgrades refuse information notice UE gravity treatment according to described attachment position and strengthens Mobile Switching Center Server eMSC Server;
Described UE launch position upgrades, and reselects described eMSC Server and adheres to;
Wherein, described UE launch position upgrades, and is attached to common MSC Server, for:
Described UE sends attachment position update request to RNC;
Described RNC chooses described common MSC Server according to described attachment position update request from current MSC Server pond;
Described RNC is transmitted to described common MSC Server by described attachment position update request;
Described RNC upgrades refuse information notice UE gravity treatment eMSC Server according to described attachment position, for:
Described RNC judge self whether buffer memory described attachment position update request;
Described RNC buffer memory during described attachment position update request, RNC upgrades the Reason For Denial " gravity treatment eMSC Server " of refuse information according to described attachment position, UE and the service connection of self are set and are designated " gravity treatment eMSC Server ", notice UE gravity treatment eMSC Server;
When described RNC does not have described in buffer memory attachment position update request, RNC upgrades refuse information by described attachment position and is transmitted to described UE, notice UE gravity treatment eMSC Server.
2. strengthen according to claim 1 the system of selection of Mobile Switching Center Server, it is characterized in that, described common MSC Server judges that described UE, as ICS UE, is specially:
Described common MSC Server confirms the home subscriber server/home location register HSS/HLR of the ownership place of described UE according to the international mobile subscriber identity IMSI of UE in described attachment position update request, and sends position updating request to described HSS/HLR;
Described HSS/HLR returns to the position renewal response of carrying ICS indication to described common MSC Server according to described position updating request;
Described common MSC Server, according to described ICS indication, judges that described UE is as ICS UE;
Or described common MSC Server, according to the User Identity section in described IMSI, judges that UE is as ICS UE.
3. strengthen according to claim 2 the system of selection of Mobile Switching Center Server, it is characterized in that, described common MSC Server notice UE gravity treatment eMSC Server, is specially:
Response is upgraded to UE in the position that described common MSC Server carries ICS LAI by described RNC transmission, notice UE gravity treatment eMSC Server;
Accordingly, the method further comprises: UE judges that described position upgrades ICS LAI that response carries when inconsistent with the ICS LAI in wireless broadcast channel, described UE launch position renewal again.
4. strengthen according to claim 3 the system of selection of Mobile Switching Center Server, it is characterized in that, described UE again launch position upgrades, and chooses eMSC Server and adheres to, and is specially:
The attachment position update request that described ICS LAI is carried in described UE transmission is to described RNC;
Described RNC chooses the eMSC Server in current MSC Server pond according to described ICS LAI, and sends attachment position update request to the eMSC Server of described selection.
5. strengthen according to claim 1 the system of selection of Mobile Switching Center Server, it is characterized in that, described UE is when launch position upgrades again, and the method also comprises:
Described RNC buffer memory during attachment position update request, RNC is according to described service connection sign " gravity treatment eMSC Server ", judge that position that the corresponding UE of described attachment position update request initiates is updated to ICS position and upgrades, and reselect eMSC Server for UE;
When described RNC does not have buffer memory attachment position update request, the attachment position that UE forwards according to RNC upgrades refuse information, to RNC, resends attachment position update request; ICS in the attachment position update request resending described in RNC foundation adheres to sign, and the position that the corresponding UE of attachment position update request that judgement resends initiates is again updated to ICS position and upgrades, and reselects eMSC Server for described UE.
6. strengthen according to claim 1 the system of selection of Mobile Switching Center Server, it is characterized in that, described UE chooses eMSC Server and adheres to, and is specially:
Described RNC chooses the eMSC Server in current eMSC Server pond from the eMSC Server list in its data storehouse;
The eMSC Server choosing described in described RNC sends to the attachment position update request of self buffer memory or attachment position update request that UE resends, makes UE state the eMSC Server choosing described in being attached to.
7. a selective system that strengthens Mobile Switching Center Server, is characterized in that, this system comprises: UE, common MSC Server, eMSC Server and RNC, wherein,
Described UE, upgrades for launch position, and is attached to described common MSC Server; Also when notifying self gravity treatment eMSC Server at described common MSC Server, launch position upgrades again, and selects eMSC Server to adhere to;
Wherein, described UE launch position is updated to: described UE sends attachment position update request to RNC;
Described common MSC Server, for when judging described UE as ICS UE, from local data base, obtain ICS customer location district information LAI corresponding with eMSC Server in MSC Server pond, and to RNC, return to the attachment position that Reason For Denial is " gravity treatment eMSC Server " and upgrade refuse information; RNC upgrades refuse information according to described attachment position and notifies described UE gravity treatment eMSC Server;
Described eMSC Server is used for, and when described UE again launch position upgrades, accepts adhering to of described UE;
RNC, for choosing described common MSC Server according to described attachment position update request from current MSC Server pond, is transmitted to described common MSC Server by described attachment position update request;
RNC, also for judge self whether buffer memory described attachment position update request, and when being judged as YES, according to described attachment position, upgrade the Reason For Denial " gravity treatment eMSC Server " of refuse information, UE and the service connection of self are set and are designated " gravity treatment eMSC Server ", notice UE gravity treatment eMSC Server; When the determination result is NO, described attachment position is upgraded to refuse information and be transmitted to described UE, notice UE gravity treatment eMSC Server.
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| CN108738089B (en) * | 2017-04-24 | 2023-04-14 | 中兴通讯股份有限公司 | Method and device for interoffice transmission of subscriber number |
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| CN1905753A (en) * | 2006-08-21 | 2007-01-31 | 华为技术有限公司 | Processing method of error derived network resource indicating in pool |
| CN101141785A (en) * | 2006-09-05 | 2008-03-12 | 华为技术有限公司 | Method and system for implementing load migration in pool section |
| CN101400108A (en) * | 2007-09-30 | 2009-04-01 | 华为技术有限公司 | Method, system and device for establishing control correlated relation |
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| CN1905753A (en) * | 2006-08-21 | 2007-01-31 | 华为技术有限公司 | Processing method of error derived network resource indicating in pool |
| CN101141785A (en) * | 2006-09-05 | 2008-03-12 | 华为技术有限公司 | Method and system for implementing load migration in pool section |
| CN101400108A (en) * | 2007-09-30 | 2009-04-01 | 华为技术有限公司 | Method, system and device for establishing control correlated relation |
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