CN101969675A - 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, be meant a kind of system of selection and system that strengthens Mobile Switching Center Server especially.
Background technology
Network interconnection agreement (IP, Internet Protocol) IP multimedia subsystem, IMS (IMS, IP MultimediaCore Network Subsystem) is a kind of IP-based network framework that proposes by 3G (Third Generation) Moblie partner program (3rd GenerationPartnership Project), it has made up an opening and service environment flexibly, support multimedia application, can provide abundant multimedia service for the user.
IMS and access technology are irrelevant, except being GPRS (GPRS, General PacketRadio Service), WLAN (wireless local area network) (WLAN, Wireless Local Area Network) grouping (PS such as, Packet Switching) access network provides outside the business, can also be global system for mobile communications (GSM, Global System for Mobile communications), unify mobile communcations system mobile cellular networks such as (UMTS, UniversalMobile Telecommunications System) and provide professional.
Mobile communications network such as GSM, UMTS adopts circuit-switched technology, and (CS, CircuitSwitched) territory can provide basic speech business for the user, and based on the supplementary service of speech business to be called circuit.When IMS was inserted in the CS territory, it developed into a kind of access way, and business provides by IMS is unified fully, and this technology is called IMS centralized traffic (ICS, IMS Centralized Service).
Figure 1 shows that the application scenarios schematic diagram of ICS, wherein, (UE UserEquipment) 101 is linked into IMS 105 by PS access network 102 to the IMS subscriber equipment, provides professional by the IMS network; Adopt the ICS technology, CS UE 103 is linked into IMS 105 by CS access network 104, provides professional by the IMS network, and so, it is professional that the IMS network can provide for the UE that adopts different access waies.
Figure 2 shows that the configuration diagram of ICS, comprise: CS UE 201, strengthen Mobile Switching Center Server (eMSC Server, enhanced-Mobile Switch Center Server) 202, media gateway (MGW, Media Gateway) 203, CSCF (CSCF, Call Session ControlFunction) entity 204, application server (AS, Application Server) 205, and home subscriber server (HSS, Home Subscriber Server)/attaching position register (HLR, Home LocationRegister) 206.
Wherein, eMSC Server 202 is enhancings of CS territory MSC Server, except the access of finishing CS UE 201, mobile management, CCF, also serve as session initiation protocol (SIP, SessionInitiation Protocol) user agent, realize the conversion between CS signaling and the sip message, replaced C S UE201 inserts IMS.
CS UE 201 is linked into eMSC Server 202 by CS control signaling; EMSC Server 202 serves as the user agent, replaced C S UE 201 inserts the CSCF entity 204 of IMS network, and and remote subscriber set up session connection, simultaneously eMSC Server 202 control MGW 203 finish Media Stream on the CS access bearer and the conversion between the Media Stream in the IP carrying, set up CS UE 201 and are connected with medium between remote subscriber.
CSCF entity 204 is further divided into inquiry CSCF (I-CSCF, Interrogating CSCF) and the service (S-CSCF, Serving CSCF), wherein I-CSCF be responsible for HSS/HLR 206 in HSS mutual, request HSS is that CS UE 201 distributes S-CSCF, perhaps inquires about CS UE 201 residing S-CSCF; S-CSCF provides functions such as registration, calling control for CS UE 201.
Application server AS 205 is positioned at IMS, comprises business continuance server, telephone service server etc., and services such as business continuance, telephone service can be provided for CS UE 201.
HSS/HLR 206 preserves the subscription data of CS UE 201, for calling out or session provides support.HLR can think the subclass of HSS, be traditional CS territory and the service of PS territory, HLR can close with HSS and be located in the same physical entity, also can be divided in the different physical entities, exist interface between HLR and the HSS this moment, and realize the mutual of information by this interface.
Fig. 3 is the register flow path of ICS in the prior art, and this flow process emphasis has been described the 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, sends the attachment position update request to eMSC Server, carries user ID in this request: international mobile subscriber identity (IMSI, International MobileSubscriber Identity).
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 eMSC Server home position upgrades response, and in user data or the position upgrade and to insert the ICS indication in the response, this indication be used to illustrate this user contracted the ICS business, promptly 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 a more new technological process of position; Step 305 to step 316 is the 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: contain the ICS indication in the response if in the user data or position is upgraded, when promptly this user was ICS user, eMSC Server decision replaced this ICS user to initiate the 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 the SIP register requirement according to the I-CSCF address of determining to I-CSCF, the privately owned sign and the public identify that comprise this user who determines according to user ID IMSI in this request, and comprise this user's access way indication, be that CS inserts as the access way of this ICS user in this flow process, this access way indication can represent that the SIP register requirement is from eMSC Server.
Step 308, I-CSCF sends the S-CSCF request for allocation to HSS, and request HSS distributes S-CSCF for the user.
Step 309, HSS sends the S-CSCF assignment response for after the user distributes S-CSCF to I-CSCF, is expressed as the user and distributes S-CSCF to finish, and comprise the S-CSCF information of distribution.
Step 310, I-CSCF is forwarded to the SIP register requirement according to the S-CSCF assignment response S-CSCF of appointment.
Step 311, S-CSCF when judging this register requirement from eMSC Server, skips the authentification of user flow process by the indication of the access way in the SIP register requirement, directly sends the user data download request to HSS, the subscription data of request download user.
Step 312, HSS returns user data to S-CSCF and downloads response, and this response comprises user's subscription data.
Step 313, S-CSCF returns 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 transmits the SIP response of succeeding in registration to eMSC Server.
Step 315, S-CSCF triggers the third-party registration process according to the initial filter standard or norm of user's subscription data, sends the third-party registration request to AS, and sends this user's third-party registration information to AS by this request.
Step 316, AS returns the third-party registration success response to S-CSCF.
So far, eMSC Server replaces UE to finish the IMS registration.
Above-mentioned flow process shown in Figure 3 only is applicable to eMSC Server, but the scene that in core net, might have common MSC Server and eMSC Server and deposit, when ICS user has selected a common MSCServer to adhere to, because common MSC Server does not possess the ICS ability, cause it can't replace UE to carry out the IMS registration; Do not adhere to and there is a kind of effective settling mode to make UE can reselect eMSC Server at this moment in the prior art, therefore can cause the IMS register flow path of above-mentioned steps 305～316 to carry out, thereby can influence 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 the 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, this method comprises:
User equipment (UE) is initiated the position and is upgraded, and is attached to common mobile switching center server MSC Server;
Described common MSC Server judges when described UE is network interconnection protocol multi-media sub-system centralized traffic ICS UE, notice UE gravity treatment enhancing Mobile Switching Center Server eMSC Server;
Described UE initiates the position and upgrades, and reselects described eMSC Server and adheres to.
Wherein, described UE initiates the position and upgrades, and is attached to common MSC Server, is specially:
Described UE sends the 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 with described attachment position update request.
Described common MSC Server judges that described UE is ICS UE, is specially:
The international mobile subscriber identity IMSI of UE confirms the home subscriber server/home location register HSS/HLR of the ownership place of described UE in the described attachment position update request of described common MSC Server foundation, and sends position updating request to described HSS/HLR;
Described HSS/HLR returns the position of carrying the ICS indication according to described position updating request to described common MSC Server and upgrades response;
Described common MSC Server judges that according to described ICS indication described UE is ICS UE;
Perhaps, described common MSC Server judges that according to the User Identity section among the described IMSI UE is ICS UE.
Described common MSC Server notice UE gravity treatment eMSC Server is specially:
Described common MSC Server obtains the ICS customer location district information LAI of eMSC Server administration in the described MSC Server pond;
Described common MSC Server sends the position of carrying ICS LAI by described RNC and upgrades response to UE, notice UE gravity treatment eMSC Server;
Accordingly, this method further comprises: UE judges that described position upgrades ICS LAI that response carries with the ICS LAI in the wireless broadcast channel when inconsistent, and described UE initiates the position renewal again.
Described UE initiates the position again and upgrades, and chooses eMSC Server and adheres to, and is specially:
Described UE sends and carries the attachment position update request of described ICS LAI to described RNC;
The described ICS LAI of described RNC foundation chooses the eMSC Server in the current MSC Server pond, and sends the attachment position update request to the eMSC of described selection Server.
Described common MSC Server notice UE gravity treatment eMSC Serve is specially:
Described common MSC Server returns the attachment position renewal refuse information of Reason For Denial for " gravity treatment eMSC Server " to RNC; RNC upgrades refuse information notice UE gravity treatment eMSCServe according to described position.
Described RNC upgrades refuse information notice UE gravity treatment eMSC Serve according to the 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 professional connection identifier of self are set are " gravity treatment eMSC Server ", notice UE gravity treatment eMSC Serve;
When described RNC did not have the described attachment position update request of buffer memory, RNC upgraded refuse information with described attachment position and is transmitted to described UE, notice UE gravity treatment eMSC Serve.
When described UE initiated the position renewal again, this method also comprised:
Described RNC buffer memory during the attachment position update request, RNC is according to described professional connection identifier " gravity treatment eMSC Server ", judge that position that the pairing UE of described attachment position update request initiates is updated to the ICS position and upgrades, and reselect eMSC Serve for UE;
When described RNC did not have buffer memory attachment position update request, UE upgraded refuse information according to the attachment position that RNC transmits, and resends the attachment position update request to RNC; RNC adheres to sign according to the ICS in the described attachment position update request that resends, and the position that the pairing UE of attachment position update request that judgement resends initiates again is updated to the ICS position and upgrades, and reselects eMSCServe for described UE.
Described UE chooses eMSC Server and adheres to, and is specially:
Described RNC chooses the eMSC Server in the current eMSC Server pond from the eMSC Server tabulation in its data storehouse;
Described RNC sends to the described eMSC Se rver that chooses with the attachment position update request of self buffer memory or the attachment position update request that UE resends, and makes UE be attached to the described eMSCServer that chooses that states.
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 is used to initiate the position and upgrades, and is attached to described common MSC S erver; Also be used for when described common MSC Server notifies self gravity treatment eMSC Server, initiate the position again and upgrade, and select eMSC Server to adhere to;
Described common MSC Ser ver is used for notifying described UE gravity treatment eMSC Server when judging that described UE is ICS UE;
Described eMSC Ser ver is used for, and when described UE initiates the position renewal again, accepts adhering to of described UE.
The selection scheme of eMSC Server of the present invention, when common MSC Server judged that UE is ICS UE, refusal ICS UE adhered to; And upgrade response by the position and carry the eMSC Server that the mode of the ICS customer location district information (LAI, Location Area Identification) of eMSC Server correspondence informs that UE reselects ICS LAI correspondence and adhere to, the completing place is upgraded; Perhaps, inform that by sending attachment position renewal refuse information UE need reselect eMSC Server and adhere to, while base station radio network controller (RNC, Radio Network Controller), can be according to professional " the gravity treatment eMSC Server " sign that is connected of UE and RNC, perhaps the ICS in the attachment position update request that resends according to UE adheres to sign, chooses eMSC Server again from the eMSC Server tabulation of self; So,, can make ICS UE when the common MSC Server that has selected not possess the ICS ability adheres to, can also reselect eMSC Server and adhere to based on the solution of the present invention.
Description of drawings
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 the 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 one of eMSC Server of the present invention;
Figure 7 shows that the schematic flow sheet of the system of selection embodiment two of eMSC Server of the present invention;
Figure 8 shows that the selective system structural representation of eMSC Server of the present invention.
Embodiment
The technical solution of the present invention is further elaborated below in conjunction with the drawings and specific embodiments.
EMSC Server system of selection of the present invention institute suitable network structure as shown in Figure 4, a RNC can be connected to a plurality of MSC Server; Above-mentioned a plurality of MSC Server forms a resource pool, is the MSCServer pond, common MSC Serve and eMSC Server and deposit in this MSC Server pond; This MSC Server pond can connect a plurality of RNC simultaneously simultaneously.RNC is the MSC Server that the UE selection is adhered to, and replaces UE to carry out the IMS registration by MSC Server, and MSC Server herein is eMSC Server, because common MSC Server does not possess the ICS ability, can't replace UE to carry out the IMS registration.
The scene that eMSC Server of the present invention system of selection is suitable for is: the ICS subscriber equipment, be that ICS UE has adhered to a common MSC Server earlier by RNC, but because common MSC Server can't replace ICS UE to carry out IMS registration, be the flow process of step 305 to 316 in the execution graph 3, therefore, ICS UE need reselect an eMSC Server and adheres to.This shows that eMSC Server of the present invention system of selection mainly is at the more improvement carried out of new technological process of position shown in Figure 3.
Figure 5 shows that the system of selection schematic flow sheet of eMSC Server of the present invention, comprising:
Below in conjunction with specific embodiment scheme shown in Figure 5 is described, Figure 6 shows that the schematic flow sheet of the system of selection embodiment one of eMSCServer of the present invention, comprising:
Step 601, UE sends the attachment position update request to RNC.
When the user started shooting, the UE starting position is new technological process more.UE sends an attachment position update request to RNC, initiates adhering to MSC Server with this.At least carry this user's user ID: IMSI in this attachment position update request, can also carry the current location area information of this user.
Step 602, RNC is transmitted to common MSC Server with the attachment position update request.
When RNC receives the attachment position update request, preferably, select a MSC Server to adhere at random; RNC also can select the lighter MSC Server of load to adhere to from the MSC Server pond of its connection according to the load sharing of MSC Server; RNC also can select to administer the highest MSC Server of the current lane place registration of lane place and this user and adhere to.
That in the method for the invention, suppose that RNC in this step selects is a common MSC Server.
RNC is transmitted to selected common MSC Server with the attachment position update request then.
Step 603, common MSC Server sends position updating request to HSS/HLR.
After common MSC Server receives the attachment position update request, determine this user's ownership place, and send position updating request, to obtain this user data of users to the HSS/HLR of this user ascription area according to IMSI.
Step 604, HSS/HLR sends the 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 MSCServer, and home position upgrades response, simultaneously, the HSS/HLR of ownership place upgrades in user data or position and inserts the ICS indication in the response, and this ICS indication is used to indicate this user for ICS user, promptly this UE is ICS UE.
Step 605, common MSC Server judges that UE is ICS UE, refuses adhering to of this ICS UE, and obtains ICS LAI.
Common MSC Server judges when containing the ICS indication in user data or the position renewal response, confirms that this user is ICS UE, refuses adhering to of this ICS UE.
Because common MSC Server does not have the ICS ability, therefore, common MSC Server can not replace UE to carry out follow-up IMS register flow path, and UE need reselect an eMSC Server and adhere to.At first, obtain the ICS LAI of eMSC Server administration in the MSC Server pond at its place by current common MSC Server.The customer location district information of eMSC Server administration, be ICS LAI by in the local data base of static configuration each MSC Server in MSC Server pond, ICS LAI and eMSC Server concern one to one.After common MSC Server gets access to ICS LAI, it is filled up to the position upgrades in the Location Area Identification field of response.
Owing to may contain a plurality of eMSC Server in a MSC Server pond, therefore, when common MSCServer obtains ICS LAI, can obtain the customer location district information of an eMSC Server administration as required at random.
ICS LAI can be a virtual location information, and it mainly contains following effect: the one, and indication UE carries out the position again to be upgraded; The one,, can be associated with eMSC Server by ICS LAI.
If it is pointed out that ICS LAI that current common MSC Server obtains, be that the current location area information of customer location district information and the UE of eMSC Server administration is identical, then UE just can't initiate the position renewal again; Therefore, the present invention herein requires the current location area information of ICS LAI that common MSC Server obtains and UE different, thereby can guarantee that UE receives after the position upgrades response, can initiate the position again and upgrade.
In addition, common MSC Server judges when UE is 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, the User Identity section is present among the IMSI.
Step 606, common MSC Server upgrades response (carrying ICS LAI) by RNC with the position and sends to UE, notice UE gravity treatment eMSC Server.
Common MSC Server upgrades response with the position of the above-mentioned ICS of carrying LAI and sends to UE by RNC, and UE need reselect eMSC Server with notice.UE then need initiate the position again and upgrade if need reselect eMSC Server, concrete as follow-up step.
Wherein, ICS LAI is the customer location district information of eMSC Server administration in the current MSC Server pond.
Step 607 judges that the ICS LAI in ICS LAI and the wireless broadcast channel is inconsistent.
After UE receives this position renewal response, the value of Location Area Identification field in the value of Location Area Identification field wherein and the 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, then UE can not carry out the position renewal again; If inconsistent, then UE can initiate the position renewal again.
Step 608, UE resends the attachment position update request and gives RNC (carrying ICS LAI).
UE initiates the position again and upgrades, and generates the attachment position update request and sends to RNC.Carry the ICS LAI in the renewal response of position in the attachment position update request that this resends.
Step 609, RNC reselects eMSC Server.
Because ICS LAI indication is the customer location district information of eMSC Server administration, therefore, preferably, has preserved the corresponding relation of customer location district information and eMSC Server in the local data base of RNC.RNC can find the eMSCServer of coupling according to the ICS LAI in the position updating request in self database.
Step 610, RNC sends position updating request to eMSC Server.
RNC sends the attachment position update request to the eMSC Server that selects, and makes UE attached on this eMSCServer.Can not carry the ICS LAI in the renewal response of above-mentioned position in this attachment position update request.
Step 611, follow-up existing position is new technological process more.
Follow-up position more new technological process with step 303 among Fig. 3～304.And then replace UE to carry out the register flow path of IMS by eMSC Serv er, as step 305 among Fig. 3～316.
Figure 7 shows that the schematic flow sheet of the system of selection embodiment two of eMSC Server of the present invention, comprising:
Step 701, UE sends the attachment position update request to RNC.
The processing of this step is identical with step 601, repeats no more herein.
Different is that this attachment position update request can not carried the current location area information of user.
Step 702, RNC is transmitted to common MSC Server with the 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 the RNC buffer memory attachment position update request, so when RNC in follow-up flow process, receive position that MSC Server sends when upgrading response, 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 the 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 ICS UE, refusal UE adheres to.
Common MSC Server judges when containing the ICS indication in user data or the position renewal response that confirm that this UE is ICS UE, refusal UE adheres to.
Step 706, common MSC Server returns attachment position to RNC and upgrades refuse information, and Reason For Denial is " gravity treatment eMSC Server ".
Because common MSC Server does not have the ICS ability, therefore, common MSC Server can not replace UE to carry out follow-up IMS register flow path, and UE need reselect an eMSC Server and adhere to.Therefore common MSC Server returns 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 ", and 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 the attachment position update request, if not, change step 708 over to; If change step 710 over to.
RNC judge self whether buffer memory the attachment position update request that sends of UE, if not, change step 708 over to; If change step 710 over to.
It is pointed out that RNC buffer memory attachment position update request if desired, then in step step 702, carry out.
Step 708, RNC upgrades refuse information with attachment position and is transmitted to UE, notice UE gravity treatment eMSCServer.
When RNC did not have the attachment position update request of buffer memory UE transmission, RNC upgraded refuse information (Reason For Denial is " gravity treatment eMSC Server ") with attachment position and is transmitted to UE, notifies UE need reselect eMSC Server with this.
Step 709, UE sends the attachment position update request to RNC, changes step 711 over to.
During UE gravity treatment eMSC Server, initiate the position again and upgrade, at first send the attachment position update request to RNC.
UE judges when Reason For Denial is " gravity treatment eMSC Server " after receiving that attachment position upgrades refuse information, initiates the position again and upgrades, and generates the attachment position update request, and sends to RNC.Preferably, UE can be provided with an ICS and adhere to sign in the attachment position update request, is used to indicate the current position of initiating again of UE to be updated to the ICS position and upgrades.
Step 710, the professional connection identifier that RNC is provided with UE and RNC is " gravity treatment eMSC Server ".
When attachment position update request that RNC buffer memory UE sends, RNC upgrades refuse information (Reason For Denial " gravity treatment eMSC Server ") according to the attachment position that common MSC Server sends, the professional connection identifier of current UE and RNC is set to " gravity treatment eMSC Server ", and current UE is connected the pairing UE of attachment position update request that is the RNC buffer memory and upgrades by the position that RNC initiates with the business of RNC.
Though common MSC Server has refused adhering to of UE, the position that UE initiates by RNC is not upgraded and is finished, so the UE of this position updating process correspondence is not connected with the business of RNC and is released.
RNC should be set to " gravity treatment eMSC Server " by the business connection identifier this moment, and this position updating process of initiating with clear and definite indication UE is that the ICS position is upgraded.
Step 711, RNC judges that the position is updated to the 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 that receives, and judges that the position that UE initiates again is updated to the renewal of ICS position.
The one,, accept step 710, when the RNC buffer memory UE send the attachment position update request time, judge that at this attachment position update request the current position of UE is updated to the ICS position and upgrades, concrete, according to the professional connection identifier " gravity treatment eMSC Server " of UE and RNC, judge that the current position of UE is updated to the ICS position and upgrades.
RNC judges when the position is updated to the renewal of ICS position, carries out the selection of eMSC Server.Preferably, the tabulation of eMSC Server in the default current MSC Server pond in the local data base of RNC, RNC is eMSC Server of picked at random from the tabulation of this eMSC Server, as the MSCServer that adheres to of UE.
Step 712, RNC is transmitted to eMSC Server with the attachment position update request.
RNC is transmitted to selected eMSC Server with the attachment position update request, and request eMSC Server accepts adhering to of UE.
After it is pointed out that eMSC Server accepts adhering to of UE, step 303 in the renewal of RNC home position responds as Fig. 3; If before the RNC buffer memory UE attachment position update request that begins to send, so this moment, RNC discharges this buffer memory, carries out more new technological process of follow-up position then.
Step 713, follow-up existing position is new technological process more.
Follow-up position more new technological process with step 303 among Fig. 3～304.And then replace UE to carry out the register flow path of IMS by eMSC Serv er, as step 305 among Fig. 3～316.
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: UE 10, common MSC Server 20 and eMSC Server 30, wherein,
UE 10, are used to initiate the position and upgrade, and be attached to common MSC Server 20; Also be used for when common MSC Server 20 notifies self gravity treatment eMSC Server 30, initiate the position again and upgrade, and select eMSC Server 30 to adhere to;
Common MSC Server 20 is used for when judging UE 10 for ICS UE, notice UE 10 gravity treatment eMSC Server 30;
EMSC Server 30 is used for, and when UE 10 initiates the position renewal again, accepts adhering to of UE 10.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.
Claims (10)
1. a system of selection that strengthens Mobile Switching Center Server is characterized in that, this method comprises:
User equipment (UE) is initiated the position and is upgraded, and is attached to common mobile switching center server MSC Server;
Described common MSC Server judges when described UE is network interconnection protocol multi-media sub-system centralized traffic ICS UE, notice UE gravity treatment enhancing Mobile Switching Center Server eMSC Server;
Described UE initiates the position and upgrades, and reselects described eMSC Server and adheres to.
2. according to the system of selection of the described enhancing Mobile Switching Center Server of claim 1, it is characterized in that described UE initiates the position and upgrades, and is attached to common MSC Server, is specially:
Described UE sends the 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 with described attachment position update request.
3. according to the system of selection of the described enhancing Mobile Switching Center Server of claim 2, it is characterized in that described common MSC Server judges that described UE is ICS UE, is specially:
The international mobile subscriber identity IMSI of UE confirms the home subscriber server/home location register HSS/HLR of the ownership place of described UE in the described attachment position update request of described common MSC Server foundation, and sends position updating request to described HSS/HLR;
Described HSS/HLR returns the position of carrying the ICS indication according to described position updating request to described common MSC Server and upgrades response;
Described common MSC Server judges that according to described ICS indication described UE is ICS UE;
Perhaps, described common MSC Server judges that according to the User Identity section among the described IMSI UE is ICS UE.
4. according to the system of selection of the described enhancing Mobile Switching Center Server of claim 3, it is characterized in that described common MSC Server notice UE gravity treatment eMSC Server is specially:
Described common MSC Server obtains the ICS customer location district information LAI of eMSC Server administration in the described MSC Server pond;
Described common MSC Server sends the position of carrying ICS LAI by described RNC and upgrades response to UE, notice UE gravity treatment eMSC Server;
Accordingly, this method further comprises: UE judges that described position upgrades ICS LAI that response carries with the ICS LAI in the wireless broadcast channel when inconsistent, and described UE initiates the position renewal again.
5. according to the system of selection of the described enhancing Mobile Switching Center Server of claim 4, it is characterized in that described UE initiates the position again and upgrades, and chooses eMSC Server and adheres to, and is specially:
Described UE sends and carries the attachment position update request of described ICS LAI to described RNC;
The described ICS LAI of described RNC foundation chooses the eMSC Server in the current MSC Server pond, and sends the attachment position update request to the eMSC of described selection Server.
6. according to the system of selection of the described enhancing Mobile Switching Center Server of claim 3, it is characterized in that described common MSC Server notice UE gravity treatment eMSC Serve is specially:
Described common MSC Server returns the attachment position renewal refuse information of Reason For Denial for " gravity treatment eMSC Server " to RNC; RNC upgrades refuse information notice UE gravity treatment eMSCServe according to described position.
7. according to the system of selection of the described enhancing Mobile Switching Center Server of claim 6, it is characterized in that described RNC upgrades refuse information notice UE gravity treatment eMSC Serve according to the 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 professional connection identifier of self are set are " gravity treatment eMSC Server ", notice UE gravity treatment eMSC Serve;
When described RNC did not have the described attachment position update request of buffer memory, RNC upgraded refuse information with described attachment position and is transmitted to described UE, notice UE gravity treatment eMSC Serve.
8. according to the system of selection of the described enhancing Mobile Switching Center Server of claim 7, it is characterized in that when described UE initiated the position renewal again, this method also comprised:
Described RNC buffer memory during the attachment position update request, RNC is according to described professional connection identifier " gravity treatment eMSC Server ", judge that position that the pairing UE of described attachment position update request initiates is updated to the ICS position and upgrades, and reselect eMSC Serve for UE;
When described RNC did not have buffer memory attachment position update request, UE upgraded refuse information according to the attachment position that RNC transmits, and resends the attachment position update request to RNC; RNC adheres to sign according to the ICS in the described attachment position update request that resends, and the position that the pairing UE of attachment position update request that judgement resends initiates again is updated to the ICS position and upgrades, and reselects eMSCServe for described UE.
9. the system of selection of described according to Claim 8 enhancing Mobile Switching Center Server is characterized in that, described UE chooses eMSC Server and adheres to, and is specially:
Described RNC chooses the eMSC Server in the current eMSC Server pond from the eMSC Server tabulation in its data storehouse;
Described RNC sends to the described eMSC Se rver that chooses with the attachment position update request of self buffer memory or the attachment position update request that UE resends, and makes UE be attached to the described eMSCServer that chooses that states.
10. a selective system that strengthens Mobile Switching Center Server is characterized in that, this system comprises: UE, common MSC Server and eMSC Server, wherein,
Described UE is used to initiate the position and upgrades, and is attached to described common MSC S erver; Also be used for when described common MSC Server notifies self gravity treatment eMSC Server, initiate the position again and upgrade, and select eMSC Server to adhere to;
Described common MSC Ser ver is used for notifying described UE gravity treatment eMSC Server when judging that described UE is ICS UE;
Described eMSC Ser ver is used for, and when described UE initiates the position renewal again, accepts adhering to of described UE.
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| 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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| CN106063332A (en) * | 2014-01-15 | 2016-10-26 | 诺基亚通信公司 | Overlay implementation of IMS centralized service network system with selection of serving network entity within a pool |
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| CN108738089A (en) * | 2017-04-24 | 2018-11-02 | 中兴通讯股份有限公司 | A kind of method and device that Subscriber Number interoffice transmits |
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