CN101076186B

CN101076186B - Method, network and apparatus for processing afterservice

Info

Publication number: CN101076186B
Application number: CN2006101535288A
Authority: CN
Inventors: 徐杰; 朱东铭; 段小琴
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2006-05-19
Filing date: 2006-09-11
Publication date: 2011-04-13
Anticipated expiration: 2026-09-11
Also published as: WO2007134507A1; CN101076186A

Abstract

The method is used for solving the issue that is if the VCC service control entity has no need to be reserved in session path, it can't be released from the session path after a later forwarding server occurs. The method comprises: a) after VCC service control entity gets the information of later forwarding server, when said VCC service control entity makes interaction with the visited place to the a roaming number, said later forwarding information is informed to the visited place; b) when originating a later forwarding service, according to said later forwarding information, the visited place indicates the incoming GMSC to optimize the route; c) said incoming GMSC executes the later forwarding service optimizing operation.

Description

A kind of method, network and device of handling afterservice

Technical field

The present invention relates to the communications field, particularly relate to a kind of method, network and device of handling afterservice.

Background technology

Evolve to the process of 3G network from the 2G network at wireless network, 3G network and the meeting of 2G network are also deposited very long one period, and under a kind of pair of net like this and the situation of depositing, the interoperability between two nets becomes a problem that requires study.

Network needs the registration situation of perception user at two networks, can select suitable network to continue when calling need be routed to the user like this.Network equally also needs grappling user's all-calls, can carry out assist control when making things convenient for the user to switch between two networks.

In order to address the above problem, 3GPP and 3GPP2 normal structure have all proposed a kind of entity based on the IMS territory, it can carry out grappling control, detects registration, the session status of user at two networks respectively, and according to user's registration, route and the switching controls that session status carries out the user.The embodiment of 3GPP is: a kind of VCC (Voice Call Continuity) is provided in IMS territory and CS territory operation controlling entity, comprises following functional entity in the described VCC operation controlling entity:

1, a routing redirection is carried out entity, is responsible for that circuit domain call is redirected to the IMS territory and calls out grappling control;

2, territory Route Selection entity NeDS is responsible in the IMS territory that various strategies such as login state, call state according to the user are made a strategic decision and controlling call is routed to the selected territory of continuing;

3, call continuity controlled entity CCCF is responsible for calling out in the grappling of IMS territory, carries out switching controls when switching generation;

The above-mentioned functions entity may set up separately physically, also may close and establish.In the present invention for convenience, they unified VCC operation controlling entity that is called.

Based on above-mentioned VCC operation controlling entity, there are following 4 kinds of schemes in the called route flow process of 3GPP formulation at present:

Called routing plan one: call out and directly enter CCCF/NeDS (being the VCC operation controlling entity), directly find VMSC (the double GMSC of being of VCC operation controlling entity) again by IMS.Referring to shown in Figure 1, comprise following key step:

1, calling enters into the VCC operation controlling entity from the IMS territory;

2, the VCC operation controlling entity is applied for customer location to HLR;

3, HLR is to user visiting territory VMSC/VLR application user roaming number;

4, VMSC/VLR returns user's roaming number;

5, HLR returns to the VCC operation controlling entity with user's roaming number;

6, the VCC operation controlling entity is that new IMS session and related original session are initiated in CSI called subscriber identification with the roaming number;

7, IMS territory conversation control entity (CSCF) is routed to CS territory visited network according to roaming number with session.

Called routing plan two: call out and enter GMSC, after the VCC operation controlling entity, be rerouted to IMS by intelligent trigger by GMSC again, enter the grappling of VCC operation controlling entity again by CS.Referring to shown in Figure 2, comprise following key step:

1, calls out from CS territory arrival GMSC;

2,3, GMSC is from HSS download user intelligent contactor;

4～6, to the VCC operation controlling entity, the VCC operation controlling entity allows call re-direction to the IMS territory by returning IMRN to GMSC by intelligent trigger;

7, GMSC arrives IMS realm entry network element MGCF according to IMRN with call re-direction;

8, MGCF generates the SIP session, will talk about and be routed to I-CSCF;

9, I-CSCF is to the address of HSS inquiry VCC operation controlling entity in the IMS territory;

10, I-CSCF will talk about and be routed to the VCC operation controlling entity;

11, the user that need continue to the CS territory is judged in this calling of VCC operation controlling entity grappling again, then returns CSRN and is rerouted to the CS territory with the control session;

12～13, IMS territory conversation control entity CSCF and MGCF route the call to CS territory GMSC according to CSRN;

14～17, GMSC downloads intelligent contactor to HSS, arrives the VCC operation controlling entity by intelligent trigger then, and the VCC operation controlling entity is returned to call out and continued indication;

18～19, GMSC by HSS to visit territory network application user roaming number;

20～22, GMSC routes the call to the user visiting network by roaming number.

Called routing plan three: call out and enter GMSC, control route by the mode of signaling catching again and redirect to IMS territory grappling (i.e. VCC-SRF among the figure) by CS.Referring to shown in Figure 3, comprise following key step:

1, calling enters GMSC by the CS territory;

2～3, GMSC sends SRI application user routing iinformation to HSS, and the VCC operation controlling entity is carried out signaling catching, and returns IMRN and be rerouted to the IMS territory with controlling call;

5～8, GMSC routes the call to the IMS territory according to IMRN, and IMS territory conversation control entity CSCF/MGCF is triggered to the VCC operation controlling entity with session;

9～11, the VCC operation controlling entity is judged the user that need continue in the CS territory, then returns CSRN and is rerouted to CS territory GMSC with controlling call;

12～13, to HSS application user routing iinformation, the VCC operation controlling entity is carried out signaling catching to GMSC by CSRN, and replaces GMSC to use the real called party number to HSS application user routing iinformation;

14～16, HSS returns to GMSC to visit territory application roaming number by the VCC operation controlling entity;

17, GMSC routes the call to visited network according to roaming number.

Called routing plan four: call out and to enter, directly arrive the CCCF/NeDS grappling, be routed to the CS territory, then call re-direction will be called out in the CS territory by the signaling catching mode behind the CS territory again and be continued to continue by NeDS if call out requirement by IMS.Referring to shown in Figure 4, comprise following key step:

1, session enters the VCC operation controlling entity in the IMS territory;

2～4, the VCC operation controlling entity determines the user that need continue in the CS territory, then returns CSRN and is rerouted to CS territory GMSC with the control session always;

5～6, to HSS application user routing iinformation, the VCC operation controlling entity is carried out signaling catching to GMSC by CSRN, and replaces GMSC to use the real called party number to HSS application user routing iinformation;

7～9, HSS returns to GMSC to visit territory application roaming number by the VCC operation controlling entity;

10, GMSC routes the call to visited network according to roaming number.

Afterservice is promptly called out and has been routed to the forward-shifting service that just triggers after the called place VMSC, and several relatively typical application scenes are to change before user's Call Forwarding No Reply and the User Determined User Busy.User's Call Forwarding No Reply is to the preceding commentaries on classics that triggers after user's ringing timeout, and changeing before the User Determined User Busy is the preceding commentaries on classics that the user triggers by " END " key during to user's ring.The flow process of the afterservice of working out does not all relate to above-mentioned VCC operation controlling entity at present, mainly has following two kinds of schemes.

Commentaries on classics scheme one before evening referring to shown in Figure 5, comprises the following steps:

The called subscriber contracts CFB (Call Forwarding Busy) or CFNRy (Call ForwardingNo Reply) business.Have this moment to call out and arrive.

1, gateway exchange GMSC receives incoming call signaling IAM.

2, GMSC applies for customer location to HLR, sends SRI message.

3, HLR sends PRN message to user place VMSC application roaming number.

4, VMSC returns user's roaming number MSRN.

5, HLR returns to GMSC with roaming number.

6, GMSC routes the call to VMSC by roaming number.

7, the VMSC paging begins ring to the user to the user.

If the long-time no response of 8 users, perhaps the user presses the calling of END key refusal, and then VMSC triggers CFB or CFNRy business.From user contracting data (when the user registers, downloading), obtain user's transferred number, initiate new calling in the side of commentaries on classics forward according to transferred number then, change before having in the message related to calls and change reason before indication parameter shows from HLR.

Commentaries on classics scheme two before evening, by the flow process of commentaries on classics scheme one before evening as can be seen the VMSC at called subscriber place preceding commentaries on classics has taken place the user after, also need to be retained in the call path always, will cause making a circulation of call signaling like this.3GPP has proposed a scheme of optimizing route again thus.Referring to shown in Figure 6, comprise the following steps:

1～7, compares with commentaries on classics scheme one before evening, difference is: GMSC is when sending SRI inquiring user position to HLR in the 2nd step, be with Call Reference Number and GMSC address, HLR the 3rd step during to VMSC/VLR application roaming number also with Call Reference Number and GMSC address strap on, VMSC/VLR notes this two information.

8, when VMSC has triggered CFB or CFNRy, VMSC does not directly carry out preceding commentaries on classics, but the GMSC address that obtains according to the 3rd step sends a RCH (Resume Call Handling) message to GMSC, changes reason, Call Reference Number and transferred number before having in the message.

After GMSC receives RCH message, be associated with the incoming call that step 1 is received according to described Call Reference Number, in order to it is carried out routing optimality; GMSC can choose HLR and remove to ask again transferred number, also can select the transferred number that uses VMSC to take back.

9, GMSC returns the response message of RCH to VMSC.

10, GMSC sends REL message release session in the past to VMSC.

11, GMSC uses transferred number to carry out route querying, with the network of call proceeding to the transferred number place.

If with the called route flow process under above-mentioned 4 kinds of VCC frameworks and 2 kinds of afterservice flow process combination in any, the user carries out the network route situation after the afterservice, referring to shown in Figure 7.Obviously in called route flow process, can not allow the VCC operation controlling entity perceive and carry out afterservice.

As seen, under 3G network and 2G network and the state deposited, if late preceding the commentaries on classics taken place, then the VCC operation controlling entity can't perceive, and also can continue to be retained in the session path by the customer call of VCC operation controlling entity grappling, make session path meaningless pass through the IMS network, cause signalling route circuitous, the waste Internet resources, and meaningless carrying out the conversion of carrying from TDM to IP, make voice quality descend, cause bad impression to the user.And, if the VCC operation controlling entity needs to be retained in the session path for some reason, also can be because of not receiving service announcements or receiving that the customer call state that also can't handle and cause record with actual inconsistent, causes the follow-up routing decision of user is derived a wrong conclusion.

Summary of the invention

The invention provides a kind of method, network and device of handling afterservice, in order to solve after afterservice has taken place, if the VCC operation controlling entity need not to be retained in the session path, then can't from session path, discharge, perhaps if the VCC operation controlling entity need be retained in the session path, then can't know service announcements, cause to upgrade the problem of customer call state.

The inventive method comprises step:

After A, VCC operation controlling entity are known late Redirection Information, described VCC operation controlling entity to called visit obtain in the reciprocal process of roaming number, described late Redirection Information is informed called visit ground;

B, when initiating afterservice, called visit ground is according to described late Redirection Information, indication Incoming GMSC optimizes route;

C, change the routing optimality operation before carrying out evening by Incoming GMSC.

Wherein, described late Redirection Information comprises the address of Incoming GMSC at least, and the Call Reference Number that is used for related incoming call, further comprises to carry the routing optimality indication.

Further, described VCC operation controlling entity can replace GMSC to generate late Redirection Information, and changes the routing optimality operation before carrying out evening.

If after afterservice took place, the VCC operation controlling entity need be retained in the session path, among the then described step C, the VCC operation controlling entity discharges former out session, and is initiated to the out session of preceding commentaries on classics side.The VCC operation controlling entity is after finishing afterservice, and more new record Central Plains called subscriber's call state is an Idle state.

Perhaps, if after afterservice takes place, the VCC operation controlling entity need not be retained in the session path, and among the then described step C, the VCC operation controlling entity discharges out session, and notifies MGCF that calling is altered course, with commentaries on classics side before being routed to again.The 3XX changed course response of SIP is returned in the Incoming session that the VCC operation controlling entity is sent MGCF, and MGCF alters course to calling with notice.

Perhaps, if after afterservice takes place, the VCC operation controlling entity need not be retained in the session path, among the then described step C, change before the GMSC generation before the VCC operation controlling entity notice IMS territory grappling, initiate to discharge out session by described GMSC, and be initiated to the session of preceding commentaries on classics side.

Described steps A comprises that following substep: A11, VCC operation controlling entity send location request message to HLR, with the application customer location, carries the address of Call Reference Number and GMSC in this message at least; A12, HLR inform VMSC/VLR with the address of described Call Reference Number and GMSC to VMSC/VLR application roaming number the time.Further, also portability routing optimality indication of described location request message.

Described VCC operation controlling entity is preserved address and the Call Reference Number that the preceding GMSC of IMS grappling informs at least, and carries the Call Reference Number of being preserved in the signaling of changeing before the GMSC generation before described notice IMS territory grappling, so that this GMSC is associated with former session.

Further, described VCC operation controlling entity and GMSC are provided with respectively.

Among the described step C, support the SOR normal process pair route relevant to be optimized with GMSC with routing optimality.Comprise that following substep: C1, Incoming GMSC send REL message to MGCF, indication discharges former calling; C2, MGCF send CANCEL to the VCC operation controlling entity; C3, VCC operation controlling entity send CANCEL to MGCF, and indication discharges out session; C4, MGCF send REL message to called visit ground, to discharge out session.

Described steps A is associated described late Redirection Information after comprising that following substep: A21, VCC operation controlling entity are known late Redirection Information with routing number; A22, when receiving the call request that has described routing number, the VCC operation controlling entity is extracted described late Redirection Information according to described incidence relation; A23, VCC operation controlling entity to called visit obtain in the reciprocal process of roaming number, described late Redirection Information is informed called visit ground.

Described steps A 21 comprises following substep: the VCC operation controlling entity is known the address of routing optimality indication, Call Reference Number and Incoming GMSC from the message that Incoming GMSC sends, and return IMS territory routing number IMRN to Incoming GMSC, so that will calling out, Incoming GMSC inserts the IMS territory; The VCC operation controlling entity is carried CS territory routing number CSRN in newly-built IMS territory call request, and described IMRN is related with CSRN.Described CSRN is identical with the IMRN part, with related IMRN and CSRN.

Can be for described CSRN and IMRN are provided with identical suffix and different prefixes, with related IMRN and CSRN.

Described steps A 22 comprises: by alternately, when the VCC operation controlling entity is received the message that carries described CSRN, according to described incidence relation, extract the address of routing optimality indication, Call Reference Number and Incoming GMSC.

Perhaps, described steps A 21 comprises: the VCC operation controlling entity is obtained the address of routing optimality indication, Call Reference Number and Incoming GMSC from the message that Incoming GMSC sends, and returns IMRN to Incoming GMSC, inserts the IMS territory so that Incoming GMSC will call out.

Described steps A 22 comprises: by alternately, when the VCC operation controlling entity is received the message that carries described IMRN, extract the address of described routing optimality indication of obtaining, Call Reference Number and Incoming GMSC.

Described steps A 23 comprises: the VCC operation controlling entity sends SRI message to HLR, with the application customer location, carries the address of routing optimality indication, Call Reference Number and Incoming GMSC in this SRI message; HLR informs VMSC/VLR with the address of described routing optimality indication, Call Reference Number and Incoming GMSC to VMSC/VLR application roaming number the time.

The address setting of GMSC before the IMS grappling that described VCC operation controlling entity is received to the major general is the address of Incoming GMSC, changes the routing optimality operation before being used to make GMSC before the IMS grappling to carry out evening.

The described VCC operation controlling entity Call Reference Number that GMSC generates before the use IMS grappling in the late Redirection Information of structure is so that the GMSC before the IMS grappling is associated with former session.

A kind of VCC operation controlling entity of the present invention, comprise: the NeDS execution entity that in the IMS territory, is used to carry out Route Selection, and in the CS territory, be used for carrying out entity to the routing redirection in IMS territory with calling out routing redirection, described VCC operation controlling entity also comprises: late Redirection Information acquiring unit is used for obtaining late Redirection Information from Incoming GMSC side; The roaming number acquiring unit, be used for to called visit obtain roaming number, and the late Redirection Information that in reciprocal process described late Redirection Information acquiring unit is obtained is informed called visit ground, make called visit ground before Incoming GMSC transmission is late, change the routing optimality indication, carry out the late preceding routing optimality operation of changeing by Incoming GMSC.

Also comprise in the described VCC operation controlling entity: the CCCF execution entity that in the IMS territory, is used to call out grappling.

Described late Redirection Information acquiring unit is arranged on routing redirection and carries out in the entity.

Described roaming number acquiring unit is arranged on routing redirection and carries out in the entity, perhaps is arranged among the NeDS and NeDS carries out with routing redirection and has the interface that transmits late Redirection Information between the entity.

If comprise the GMSC functional unit in the described VCC operation controlling entity, before generating late Redirection Information and carrying out evening, change the routing optimality operation, and after afterservice takes place, the VCC operation controlling entity need be retained in the session path, then discharge former out session, and be initiated to the out session of preceding commentaries on classics side by the VCC operation controlling entity.Described entity also comprises: updating block, be used for after finishing afterservice, and notice CCCF carries out the more customer call state of new record of entity.

If comprise the GMSC functional unit in the described VCC operation controlling entity, before generating late Redirection Information and carrying out evening, change the routing optimality operation, and after afterservice takes place, the VCC operation controlling entity does not need to be retained in the session path, then discharge out session by the VCC operation controlling entity, and notify MGCF that calling is altered course, with commentaries on classics side before being routed to again.The 3XX changed course response of SIP is returned in the Incoming session that the VCC operation controlling entity is sent MGCF, and MGCF alters course to calling with notice.

If comprise the GMSC functional unit in the described VCC operation controlling entity, before generating late Redirection Information and carrying out evening, change the routing optimality operation, the VCC operation controlling entity is preserved the GMSC address before the IMS territory grappling, and after afterservice takes place, the VCC operation controlling entity does not need to be retained in the session path, then, initiate to discharge out session by this GMSC, and be initiated to the session of preceding commentaries on classics side by changeing before the GMSC generation before the VCC operation controlling entity notice IMS territory grappling.

Described late Redirection Information is generated by the VCC operation controlling entity.

If do not comprise the GMSC functional unit in the described VCC operation controlling entity, also comprise in the then described entity: associative cell, be used for the late Redirection Information that described late Redirection Information acquiring unit obtains is associated with routing number, so that after receiving the call request that carries described routing number, extract described late Redirection Information according to described incidence relation.Described late Redirection Information, is perhaps obtained by the interception signaling method by the intelligent trigger mode by late Redirection Information acquiring unit.

A kind of pair of net mutual operation network of the present invention, comprise: HLR, GMSC, VMSC/VLR, and VCC operation controlling entity, it is used for obtaining late Redirection Information from the message that Incoming GMSC sends, and when obtaining roaming number, by HLR described late Redirection Information is sent to VMSC/VLR,, and finish the late preceding routing optimality that changes by Incoming GMSC and operate so that VMSC/VLR indicates Incoming GMSC routing optimality according to late Redirection Information.

Described VCC operation controlling entity comprises: late Redirection Information acquiring unit is used for obtaining late Redirection Information from Incoming GMSC side; The roaming number acquiring unit is used for obtaining roaming number to the VMSC/VLR side, and the late Redirection Information that in reciprocal process described late Redirection Information acquiring unit is obtained is informed VMSC/VLR.

Commentaries on classics routing optimality operation before if described VCC operation controlling entity replacement GMSC generates late Redirection Information and carries out evening, and after afterservice takes place, the VCC operation controlling entity need be retained in the session path, then discharge former out session, and be initiated to the out session of preceding commentaries on classics side by the VCC operation controlling entity.Described VCC operation controlling entity also comprises: updating block, be used for after finishing afterservice, and trigger the more customer call state of new record.

Commentaries on classics routing optimality operation before if described VCC operation controlling entity replacement GMSC generates late Redirection Information and carries out evening, and after afterservice takes place, the VCC operation controlling entity does not need to be retained in the session path, then discharge out session by the VCC operation controlling entity, and notify MGCF that calling is altered course, with commentaries on classics side before being routed to again.

Commentaries on classics routing optimality operation before if described VCC operation controlling entity replacement GMSC generates late Redirection Information and carries out evening, the VCC operation controlling entity is preserved the GMSC address before the IMS territory grappling, and after afterservice takes place, the VCC operation controlling entity does not need to be retained in the session path, change before then taking place by the GMSC before the VCC operation controlling entity notice IMS territory grappling, initiate to discharge out session by described GMSC, and be initiated to the session of preceding commentaries on classics side.

If described VCC operation controlling entity and GMSC are provided with respectively, also comprise in the then described VCC operation controlling entity: associative cell, be used for the late Redirection Information that described late Redirection Information acquiring unit obtains is associated with routing number, so that after receiving the call request that carries described routing number, extract described late Redirection Information according to described incidence relation.

Beneficial effect of the present invention is as follows:

The inventive method is associated the called route flow process under the VCC framework with the afterservice flow process, so that after the VCC operation controlling entity knows late Redirection Information, described VCC operation controlling entity to called visit obtain in the reciprocal process of roaming number, described late Redirection Information is informed called visit ground; When initiating afterservice, called visit ground sends the routing optimality indication according to described late Redirection Information to Incoming GMSC; Change the routing optimality operation before carrying out evening by Incoming GMSC again.The VCC operation controlling entity not only can be known late Redirection Information like this, so that upgrade the User Status of its preservation; Also can participate in obtaining the process of roaming number, and late Redirection Information is informed called visit ground, after afterservice takes place, the IMS territory route resource that comprises the VCC operation controlling entity can be discharged by normal process such as existing SOR.

In order to support the inventive method, the present invention also provides a kind of VCC operation controlling entity and a kind of pair of net mutual operation network.

By enforcement of the present invention, when being in after the user who is called out the grappling state by the VCC operation controlling entity initiated afterservice, if the VCC operation controlling entity need not to be retained in the session path, then can from the IMS grappling, discharge calling out, with the influence of avoiding meaningless repeatedly encoding and decoding conversion that voice quality is caused, the route resource of saving the IMS territory simultaneously; If the VCC operation controlling entity need be retained in the session path, then can allow the VCC operation controlling entity perceive user's the service condition and the record of renewal oneself, so that after in the call proceeding that takes place, can carry out correct routing decision according to the real call state of user.

Description of drawings

Fig. 1 is the signaling process figure of existing called routing plan one;

Fig. 2 is the signaling process figure of existing called routing plan two;

Fig. 3 is the signaling process figure of existing called routing plan three;

Fig. 4 is the signaling process figure of existing called routing plan four;

Fig. 5 is the signaling process figure of existing afterservice;

Fig. 6 is the signaling process figure of existing optimization afterservice;

Fig. 7 carries out afterservice network route situation schematic diagram afterwards for existing user;

Fig. 8 is an of the present invention pair of net mutual operation network schematic diagram;

Fig. 9 closes the structural representation of the scheme of establishing for VCC operation controlling entity of the present invention and GMSC;

Figure 10 closes the structural representation of the scheme of establishing two for VCC operation controlling entity of the present invention and GMSC;

Figure 11 sets up the structural representation of scheme one separately for VCC operation controlling entity of the present invention and GMSC;

Figure 12 sets up the structural representation of scheme two separately for VCC operation controlling entity of the present invention and GMSC;

Figure 13 is the inventive method flow chart of steps;

Figure 14 is the signaling process figure of the inventive method example one;

Figure 15 is the signaling process figure of the inventive method example two;

Figure 16 is the signaling process figure of the inventive method example three;

Figure 17 is the signaling process figure of the inventive method example four;

Figure 18 is the signaling process figure of the inventive method example five;

Figure 19 is the signaling process figure of the inventive method example six.

Embodiment

Based on 3GPP and two fields of 3GPP2.For when being in after the user who is called out the grappling state by the VCC operation controlling entity initiated afterservice, if the VCC operation controlling entity need not to be retained in the session path, then can from the IMS grappling, discharge calling out, with the influence of avoiding meaningless repeatedly encoding and decoding conversion that voice quality is caused, simultaneously in order to save the route resource in IMS territory; If the VCC operation controlling entity need be retained in the session path, then can allow the VCC operation controlling entity perceive user's the service condition and the record of renewal oneself, so that after in the call proceeding that takes place, can carry out correct routing decision according to the real call state of user.

The invention provides a kind of pair of net mutual operation network, can be applicable to two fields of 3GPP and 3GPP2, referring to shown in Figure 8, it comprises: HLR, GMSC and VMSC/VLR, also comprise: the VCC operation controlling entity, be used for obtaining late Redirection Information from the message that Incoming GMSC sends, perhaps described VCC operation controlling entity oneself generates late Redirection Information (generating the address of Incoming GMSC at least), and when obtaining roaming number, by HLR described late Redirection Information is sent to VMSC/VLR, so that VMSC/VLR, finishes the late preceding routing optimality operation of changeing according to late Redirection Information indication routing optimality.

Further, VCC operation controlling entity of the present invention can merge setting with Incoming GMSC, replace Incoming GMSC to generate late Redirection Information (generating the address of Incoming GMSC at least) by the VCC operation controlling entity, and change the routing optimality operation before carrying out evening, at merging the following two kinds of schemes that the invention provides that are provided with:

Merge the plan of establishment one: referring to shown in Figure 9, described VCC operation controlling entity comprises:

NeDS carries out entity, and it is used to carry out Route Selection in the IMS territory.

Routing redirection is carried out entity, is used for the calling routing redirection to the IMS territory in the CS territory.

CCCF carries out entity, and it is used to call out grappling in the IMS territory.

Evening, the Redirection Information acquiring unit was used for obtaining late Redirection Information from Incoming GMSC side.Described late Redirection Information acquiring unit can be arranged on routing redirection and carry out in the entity.

The roaming number acquiring unit is used for obtaining roaming number to the VMSC/VLR side, and the late Redirection Information that in reciprocal process described late Redirection Information acquiring unit is obtained, or the late Redirection Information of VCC operation controlling entity oneself generation is informed VMSC/VLR.Described roaming number acquiring unit can be arranged on routing redirection and carry out in the entity.

The GMSC functional unit is used to realize the partial function of GMSC, as: generate Call Reference Number, the address of Incoming GMSC is provided, change routing optimality operation etc. before carrying out evening.

If after afterservice took place, the VCC operation controlling entity need be retained in the session path, then described VCC operation controlling entity also comprises: updating block, be used for after finishing afterservice, and notice CCCF carries out the more customer call state of new record of entity.And discharge former out session, and the out session of commentaries on classics side before being initiated to by the VCC operation controlling entity.

If after afterservice takes place, the VCC operation controlling entity does not need to be retained in the session path, then discharges out session by the VCC operation controlling entity, and the Incoming session that MGCF sends is returned the 3XX changed course response of SIP, MGCF alters course to calling with notice, commentaries on classics side before being routed to again.

The VCC operation controlling entity is preserved the GMSC address before the IMS territory grappling, if after afterservice takes place, the VCC operation controlling entity does not need to be retained in the session path, before taking place, changes GMSC before the then described VCC operation controlling entity notice IMS territory grappling, initiate to discharge out session by described GMSC, and be initiated to the session of preceding commentaries on classics side.

Merge the plan of establishment two: referring to shown in Figure 10, described roaming number acquiring unit is arranged among the NeDS, and has the interface of the late Redirection Information of transmission between NeDS and the routing redirection execution entity.Other unit are identical with the merging plan of establishment one with the relevant information of carrying out entity.

Further, VCC operation controlling entity of the present invention can be provided with respectively with GMSC, at the following two kinds of schemes that the invention provides are set respectively:

The plan of establishment one respectively: referring to shown in Figure 11, described VCC operation controlling entity comprises:

Late Redirection Information acquiring unit, it adopts intelligent trigger mode or interception signaling method to obtain late Redirection Information from Incoming GMSC side.Described late Redirection Information acquiring unit can be arranged on routing redirection and carry out in the entity.

The roaming number acquiring unit is used for obtaining roaming number to the VMSC/VLR side, and the late Redirection Information that in reciprocal process described late Redirection Information acquiring unit is obtained is informed VMSC/VLR.Described roaming number acquiring unit can be arranged on routing redirection and carry out in the entity.

Associative cell, be used for the late Redirection Information that described late Redirection Information acquiring unit obtains is associated with routing number, so that after receiving the call request that carries described routing number, make late Redirection Information acquiring unit extract described late Redirection Information, and offer the roaming number acquiring unit according to described incidence relation.

The plan of establishment two respectively: referring to shown in Figure 12, described roaming number acquiring unit is arranged among the NeDS, and has the interface of the late Redirection Information of transmission between NeDS and the routing redirection execution entity.Other unit are identical with the difference plan of establishment one with the relevant information of carrying out entity.

With the plan of establishment two respectively is example, and described associative cell is associated late Redirection Information and has two kinds of situations with routing number.

Situation one: only need related IMS territory routing number and late Redirection Information.

Routing redirection is carried out entity and is obtained late Redirection Information from GMSC, and generates IMS territory routing number IMRN, to route the call to the IMS territory.Calling is carried out entity by NeDS and is carried out Route Selection after the IMS territory is triggered to NeDS execution entity.Needs according to concrete business, NeDS carries out entity and directly obtains roaming number to the CS territory, then need not generative circuit territory routing number CSRN, can directly carry out the late Redirection Information of inquiry in the entity (promptly only needing related IMRN and late Redirection Information) to routing redirection according to IMRN, after obtaining late Redirection Information, obtain roaming number with going called visit, carry simultaneously and changeed routing iinformation before described evening.

Situation two: IMRN, CSRN and late Redirection Information three are associated.

Routing redirection is carried out entity and is obtained late Redirection Information from GMSC, and generates IMS territory routing number IMRN, to route the call to the IMS territory.Calling is carried out entity by NeDS and is carried out Route Selection after the IMS territory is triggered to NeDS execution entity.According to the needs of concrete business, NeDS carry out entity with call re-direction to the CS territory, then generate CSRN and return.IMS territory conversation control entity (CSCF/MGCF) routes the call to the GMSC in CS territory according to CSRN, GMSC is triggered to calling routing redirection again and carries out entity, then routing redirection is carried out entity and just can be associated with IMRN according to CSRN, and then is associated with corresponding late Redirection Information.Afterwards, NeDS carries out entity and obtains roaming number with going called visit, and carries described late Redirection Information.

Use above-mentioned network and VCC operation controlling entity, the invention provides a kind of method of handling afterservice, can be applicable to two fields of 3GPP and 3GPP2,, comprise following key step referring to shown in Figure 13:

S1, VCC operation controlling entity are obtained late Redirection Information.

If comprise the GMSC functional unit in the VCC operation controlling entity, in order to replace GMSC to generate late Redirection Information, and carry out and to change routing optimality operation (be VCC operation controlling entity and Incoming GMSC close establish) before evening, then generate described late Redirection Information (generating the address of Incoming GMSC at least) by the VCC operation controlling entity.

If VCC operation controlling entity and GMSC are provided with respectively, then can adopt the mode of intelligent trigger, will carry the message trigger of late Redirection Information to the VCC operation controlling entity, so that the VCC operation controlling entity is known late Redirection Information; Perhaps, adopt interception mode, by the SRI message that carries late Redirection Information of VCC operation controlling entity interception Incoming GMSC, to obtain late Redirection Information to the HLR transmission.Set up separately under the situation, described VCC operation controlling entity can be the address of Incoming GMSC with the address setting of the GMSC before the IMS grappling of receiving also, is used to make the preceding GMSC of IMS grappling to carry out preceding commentaries on classics in evening routing optimality and operates; The described VCC operation controlling entity Call Reference Number that GMSC generates before the use IMS grappling in the late Redirection Information of structure then can make the preceding GMSC of IMS grappling be associated with former session.

S2, VCC operation controlling entity are applied for customer location to HLR, and carry late Redirection Information.

The present invention sends SRI message by the VCC operation controlling entity to HLR, with the application customer location, carries the late Redirection Information that obtains among the step S1 in this SRI message.

S3, HLR apply for roaming number to VMSC/VLR, and carry late Redirection Information.

This step has realized late Redirection Information is inserted into VMSC/VLR.

S4, when initiating afterservice, VMSC/VLR optimizes route according to late Redirection Information indication GMSC.

When initiating afterservice, VMSC/VLR sends RCH message according to the GMSC address (being included in the late Redirection Information) of preserving to Incoming GMSC, to carry out the late preceding routing optimality indication of changeing.

S5, change the routing optimality operation before carrying out evening by Incoming GMSC.

If closing, VCC operation controlling entity and GMSC establish, then the VCC operation controlling entity can (as: caller be in the IMS territory when needs are retained in the session path, enter the scene that the VCC operation controlling entity is found in called affiliated IMS territory through I-CSCF), discharge out session according to standard SOR flow process, and the session of the side of commentariesing on classics before being initiated to, the while is the User Status of new record more.

If closing, VCC operation controlling entity and GMSC establish, (as: caller was in the CS territory when then the VCC operation controlling entity need not be retained in the session path, enter the scene that the VCC operation controlling entity is found in the IMS territory through MGCF), the VCC operation controlling entity discharges out session, and to Incoming the 3XX changed course response of SIP is returned in session, MGCF carries out call re-direction, commentaries on classics side before being routed to again after receiving 3XX changed course response.Perhaps, change before the GMSC generation before the VCC operation controlling entity notice IMS territory grappling, initiate to discharge out session by described GMSC, and be initiated to the session of preceding commentaries on classics side.Described in this case VCC operation controlling entity is preserved address and the Call Reference Number that the preceding GMSC of IMS grappling informs at least, and carry the Call Reference Number of being preserved in the signaling of changeing before the GMSC generation before described notice IMS territory grappling, so that this GMSC can be associated with former session.

If VCC operation controlling entity and GMSC are provided with respectively, then discharge the session of out direction, and be initiated to the session of preceding commentaries on classics side according to the SOR normal process, so just the VCC operation controlling entity can be discharged from session path at interior IMS network.

Below specifically describe the inventive method by six examples.

Method example one: VCC operation controlling entity and GMSC close and establish (GMSC be the IMS territory Incoming GMSC) herein, finish the processing of afterservice.Referring to shown in Figure 14, comprise following concrete steps:

1, calling has been routed to the IMS territory, and CSCF triggers by business calling is toggled to the VCC operation controlling entity.

2, the VCC operation controlling entity decision-making user that will continue in the CS territory, then send SRI message to HLR and come the inquiring user position as GMSC, be with route optimization indication expression to initiate late preceding the commentaries on classics in the SRI message, simultaneously with address (being the address of VCC operation controlling entity) and the Call Reference Number of going up GMSC by GMSC.

3, HLR sends PRN request roaming number to user place VMSC, has the routing optimality indication in the PRN message, simultaneously with address and the Call Reference Number of going up GMSC.

4, VMSC returns user's roaming number.

5, HLR returns to the VCC operation controlling entity with roaming number.

6, the VCC operation controlling entity uses roaming number with call re-direction, notice CSCF, and CSCF detects the roaming number that routing address is the tel form, then routes the call to MGCF.

7, MGCF routes the call to VMSC by roaming number.

8, when triggering afterservice, GMSC address and the late preceding routing optimality indication of changeing that VMSC obtained according to the 3rd step, to GMSC is that the VCC operation controlling entity sends RCH message, has Call Reference Number and preceding commentaries on classics reason in the RCH message, also can be with transferred number simultaneously.

9, the VCC operation controlling entity is received and is associated with incoming call according to described Call Reference Number after the RCH message, and turn of tidal stream journey before initiating.Transferred number can be initiated SRI to HLR asks to obtain, and also can directly use the transferred number that brings in the RCH message.The VCC operation controlling entity is returned the response message of RCH to VMSC.

10, the VCC operation controlling entity sends the BYE request to CSCF and is released in original session in the 6th step, and the BYE request is sent to MGCF always.

Annotate: the sequencing in above-mentioned 9,10 liang of steps does not have special provision.

11, MGCF just discharges original session to VMSC transmission REL message after receiving the BYE request.

12, the VCC operation controlling entity begins to carry out the routing optimality operation.If the VCC operation controlling entity need continue to be retained in the session path, then directly use transferred number to initiate new session, and with new session with at the 1st session association received of step, simultaneously the VCC operation controlling entity more in the new record customer call state be Idle state; If the VCC operation controlling entity does not need to continue to be retained in the session path, can be in the 1st step session of receiving return call re-direction indication 3XX message and be with transferred number allow CSCF or the MGCF changed course that makes a call simultaneously to CSCF.

Method example two: VCC operation controlling entity and GMSC are provided with (GMSC be the IMS territory Incoming GMSC) herein respectively, and adopt the mode of intelligent trigger, finish the processing of afterservice.Referring to shown in Figure 15, comprise following concrete steps:

1, GMSC1 receives the call proceeding signaling.

2, GMSC1 applies for user data to HLR.

3, HLR downloads called intelligent contactor to GMSC1.

4, GMSC1 is triggered to VCC operation controlling entity (in routing redirection entity) according to trigger, in the message with the Call Reference Number 1 of going up this calling and the address of GMSC1.

5, VCC operation controlling entity (in routing redirection entity) is noted the address of Call Reference Number 1 and GMSC1, and returns IMRN (IMS Routing Number) to GMSC1 and indicate GMSC1 to route the call to the IMS territory.

6, GMSC1 routes the call to IMS territory gateway entity MGCF according to IMRN.

7, MGCF generates IMS territory call signaling and according to IMRN call signaling is sent to VCC operation controlling entity (in territory select entity) through CSCF.

8, the call continuity controlled entity in the VCC operation controlling entity carries out grappling with calling.If it is to call out to continue in circuit domain that the entity result of decision is selected in the territory, the call request of the then newly-built CSRN of having (CS RoutingNumber) allows call out and is routed to the CS territory, a related simultaneously calling of newly calling out and receiving.For this step and the 5th step are associated so that subsequent operation can be provided with CSRN and adopt identical suffix with IMRN, prefix is then different, and indication is routed to not same area respectively.

9, after MGCF receives the call signaling that has CSRN, route the call to CS territory GMSC2 according to CSRN, GMSC2 may be a GMSC with GMSC1, also might not be, and is in order not obscure different sessions, that they are described separately here.

10, after GMSC2 receives incoming call, learn that according to information analyses such as number analysis or Incoming relaying, office direction that the CSRN that receives is carried out needs directly trigger intelligent signaling to VCC operation controlling entity (also being called N-CSI in WCDMA triggers), can be in the signaling with the Call Reference Number 2 and address (useless in the present invention) that go up GMSC2.

11, after the VCC operation controlling entity is received the triggering signaling that has CSRN, be associated with the 5th processing that goes on foot by suffix identical among the CSRN with IMRN, to HLR application customer location, and with the Call Reference Number 1 of last the 5th step preservation and the address of GMSC1.

12, HLR applies for roaming number to VMSC/VLR, is with the indication of preceding commentaries on classics in evening routing optimality simultaneously, and the address of Call Reference Number 1 and GMSC1.

13, VMSC returns roaming number and notes late preceding address of changeing routing optimality indication and Call Reference Number 1 and GMSC1 simultaneously.

14, HLR returns to the VCC operation controlling entity with roaming number.

15, the VCC operation controlling entity returns roaming number to GMSC2.

16, GMSC2 routes the call to VMSC according to roaming number.

If 17 triggering preceding commentaries on classics conditions in evening, then VMSC indicates and the GMSC1 address according to the late preceding routing optimality that changes of preservation, indicates preceding commentaries on classics to GMSC1 transmission RCH message has taken place, and is with simultaneously and goes forward to change reason, Call Reference Number 1 and transferred number.

Annotate: after GMSC1 receives RCH message, carry out the preceding routing optimality flow process of changeing in evening according to the SOR standard operation.Below the sequencings regulation not in the 18th step, 19 steps and 23 steps.According to the SOR standard, the transferred number that GMSC1 can remove HLR application transferred number or directly use VMSC to bring triggers late preceding turn of tidal stream journey.

18, at first GMSC1 returns the response message of RCH to VMSC, and is associated with incoming call according to described Call Reference Number 1.

19, GMSC1 discharges original calling to MGCF transmission REL message then.

20, after MGCF receives REL message, to the release message CANCEL of CSCF and VCC operation controlling entity transmission SIP.

21, the VCC operation controlling entity is received after the CANCEL, also discharges session to sending CANCEL in the newly-built session of the 8th step.

22, MGCF receives after the CANCEL, sends the calling that REL message is released in the foundation of the 9th step to GMSC2, and release message is delivered to VMSC always, will arrive the calling of VMSC and all remove; GMSC1 just can carry out preceding turn of tidal stream journey after the calling that has discharged MGCF, commentaries on classics side sets up new calling forward.

Method example three: VCC operation controlling entity and GMSC are provided with (GMSC be the IMS territory Incoming GMSC) herein respectively, and adopt the interception signaling method, finish the processing of afterservice.Referring to shown in Figure 16, comprise following concrete steps:

1, calls out the GMSC1 that arrives called affiliated home network from circuit domain.

2, GMSC1 sends SRI message to HLR and takes the family positional information, has the address that GMSC1 supports SOR operation and Call Reference Number 1 and GMSC1 in the message.

3, VCC signaling catching entity is handled after the SRI message block is got off.Need call out via the IMS territory when making a strategic decision, then Call Reference Number 1 and the address of the routing redirection entity of VCC operation controlling entity (unification is provided with the signaling catching entity) preservation GMSC1 are returned IMRN to GMSC1 then and are rerouted to the IMS territory with controlling call.

4, GMSC1 routes the call to IMS territory gateway entity MGCF according to IMRN.

5, MGCF generates IMS territory call signaling and according to IMRN call signaling is sent to the VCC operation controlling entity through CSCF.

6, the continuity controlled entity of VCC operation controlling entity will be called out grappling.Call out and need continue in circuit domain if the territory selects entity to make a strategic decision, the call request of the then newly-built CSRN of having (CS Routing Number) allows call out and is routed to the CS territory, a related simultaneously calling of newly calling out and receiving.For this step and the 3rd step are associated so that subsequent operation can be provided with CSRN and adopt identical suffix with IMRN, prefix is then different, and indication is routed to not same area respectively.

7, after MGCF receives the call signaling that has CSRN, route the call to CS territory GMSC2 according to CSRN, GMSC2 may be a GMSC with GMSC1, also might not be, and is in order not obscure different sessions, that they are described separately here.

8, after GMSC2 receives incoming call, get the application customer location to HLR according to the CSRN that receives, can be in the signaling with the Call Reference Number 2 and address (useless in the present invention) that go up GMSC2.

9, after VCC signaling catching entity is intercepted the SRI signaling that called number is CSRN, by being associated with the 3rd processing that goes on foot with the suffix identical with IMRN, called number is changed into the real MSISDN of user and applies for customer location to HLR, and with the Call Reference Number 1 of last the 3rd step preservation and the address of GMSC1.

10, HLR applies for roaming number to VMSC/VLR, supports the preceding indication of changeing routing optimality in evening with going up GMSC1 simultaneously, and the address of Call Reference Number 1 and GMSC1.

11, VMSC returns roaming number and notes the address that GMSC1 supports late preceding commentaries on classics routing optimality and Call Reference Number 1 and GMSC1 simultaneously.

12, HLR returns to the VCC operation controlling entity with roaming number.

13, the VCC operation controlling entity returns roaming number to GMSC2.

Subsequent step is identical with method example two.

Method example four: under the 3GPP2 VCC framework, VCC operation controlling entity and GMSC are provided with (GMSC is the inlet GMSC in CS territory, i.e. GMSC before the IMS territory grappling) respectively herein, and adopt the mode of intelligent trigger, finish the processing of afterservice.Referring to shown in Figure 17, comprise following concrete steps:

1, GMSC receives the call proceeding signaling.

2, GMSC applies for user data to HLR.

3, HLR downloads called intelligent contactor to GMSC.

4, GMSC is triggered to the SCP entity according to trigger, in the message with the Call Reference Number 1 of going up this calling and the address of GMSC.

5, SCP gives the VCC operation controlling entity with forwards, carries the Call Reference Number 1 of this calling and the address of GMSC.

6, the VCC operation controlling entity is noted the address of Call Reference Number 1 and GMSC, and returns the IMS routing number to SCP.

7, SCP returns the IMS routing number to GMSC and is used for the follow-up IMS of routing the call to territory.

8, GMSC routes the call to IMS territory gateway entity MGCF according to the IMS routing number.

9, MGCF generates IMS territory call signaling and according to the IMS routing number call signaling is sent to the VCC operation controlling entity through CSCF.

10, the VCC operation controlling entity is carried out the result that grappling and decision domain select with calling and need be continued in circuit domain for calling out, then the VCC operation controlling entity is as a B2B user agent, initiation is to the calling of the Tel URI of called subscriber MDN correspondence, and this call initiation message is sent to called subscriber's S-CSCF.

11, trigger by iFC, call initiation message is triggered to the VCC operation controlling entity.

12, the VCC operation controlling entity is applied for customer location to HLR, carries the Call Reference Number 1 of the 5th step preservation and the address of GMSC.

13, HLR applies for roaming number to VMSC/VLR, simultaneously with the address of going up late Call Reference Number 1 and GMSC.

14, VMSC returns the address that roaming number is noted Call Reference Number 1 and GMSC simultaneously.

15, HLR returns to the VCC operation controlling entity with roaming number.

16, the VCC operation controlling entity routes the call to MGCF according to roaming number.

17, MGCF routes the call to VMSC according to roaming number.

18, VMSC attempts to set up and the contact of called number.

If 19 trigger preceding commentaries on classics condition in evening, VMSC sends the indication of REDREQ message to GMSC preceding commentaries on classics has taken place according to the GMSC address of preserving, and carries Call Reference Number 1.

20, GMSC gets transferred number to HLR.

21, HLR returns transferred number and gives GMSC.

22, GMSC returns the response message redreq of REDREQ to VMSC.

23, GMSC discharges original calling to MGCF transmission REL message then.

24, after MGCF receives REL message, to the release message CANCEL of CSCF and VCC operation controlling entity transmission SIP.

25～28, the VCC operation controlling entity is received after the CANCEL, sends CANCEL and discharges previous session, and release message is delivered to VMSC always, will arrive the calling of VMSC and all remove.

29, turn of tidal stream journey before GMSC carries out, commentaries on classics side sets up new calling forward.

Method example five: under the 3GPP2 VCC framework, VCC operation controlling entity and GMSC merge setting (GMSC is the MSC that reaches roaming number) herein, and adopt the mode of intelligent trigger, finish the processing of afterservice.Referring to shown in Figure 180, comprise following concrete steps:

1, GMSC receives the call proceeding signaling.

2, GMSC applies for user data to HLR.

3, HLR downloads called intelligent contactor to GMSC.

12, the VCC operation controlling entity is applied for customer location to HLR, carry the Call Reference Number 1 of the 5th step preservation or carry the Call Reference Number 2 that VCC operation controlling entity oneself generates, and carry the MSCIN address of VCC operation controlling entity or carry the signalling point address.

13, HLR applies for roaming number to VMSC/VLR, simultaneously with the MSCIN address or the signalling point address of going up Call Reference Number 1 or Call Reference Number 2 and VCC operation controlling entity.

14, VMSC returns MSCIN address or the signalling point address that roaming number is noted Call Reference Number 1 or Call Reference Number 2 and VCC operation controlling entity simultaneously.

15, HLR returns to the VCC operation controlling entity with roaming number.

17, MGCF routes the call to VMSC according to roaming number.

18, VMSC attempts to set up and the contact of called number.

If 19 trigger preceding commentaries on classics condition in evening, VMSC sends the indication of REDREQ message for VCC AS preceding commentaries on classics has taken place according to the MSCIN address or the signalling point address of the VCC operation controlling entity of preserving, and carries Call Reference Number 1 or Call Reference Number 2.

20, (as: call out from the CS territory and before wanting and forward the CS territory to, avoid route to make a circulation) in the call path after changeing before VCC AS judgement oneself does not need to be retained in, then give GMSC with the REDREQ forwards according to the GMSC address of preserving.If what carry from the REDREQ message that VMSC receives is Call Reference Number 2, then VCC AS also will be replaced by it Call Reference Number of being preserved 1.

21, GMSC gets transferred number to HLR.

22, HLR returns transferred number and gives GMSC.

23, GMSC returns the response message redreq of REDREQ to VCC AS.

24, VCC AS returns the response message redreq of REDREQ to VMSC.

25, GMSC discharges original calling to MGCF transmission REL message then.

26, after MGCF receives REL message, to the release message CANCEL of CSCF and VCC operation controlling entity transmission SIP.

27～30, the VCC operation controlling entity is received after the CANCEL, sends CANCEL and discharges previous session, and release message is delivered to VMSC always, will arrive the calling of VMSC and all remove.

31, turn of tidal stream journey before GMSC carries out, commentaries on classics side sets up new calling forward.

Method example six: under the 3GPP2 VCC framework, VCC operation controlling entity and GMSC merge setting (GMSC is the MSC that gets roaming number) herein, and adopt the mode of intelligent trigger, finish the processing of afterservice.Referring to shown in Figure 19, comprise following concrete steps:

1～19 with method example five.

20, in the call path after changeing before the judgement of VCC operation controlling entity need be retained in oneself, then get transferred number to HLR.

21, HLR returns transferred number and gives the VCC operation controlling entity.

22, the VCC operation controlling entity returns to VMSC/VLR with the transferred number that obtains.

23～26, VCC operation controlling entity transmission CANCEL discharges previous session, and release message is delivered to VMSC always, will arrive the calling of VMSC and all remove.

27, turn of tidal stream journey before the VCC operation controlling entity is carried out, commentaries on classics side sets up new calling forward.Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. a method of handling afterservice is characterized in that, comprises the following steps:

2. the method for claim 1 is characterized in that, described late Redirection Information comprises at least: the address of Incoming GMSC, and the Call Reference Number that is used for related incoming call.

3. method as claimed in claim 2 is characterized in that, described Incoming GMSC and the unification of VCC operation controlling entity; Described VCC operation controlling entity replaces Incoming GMSC to generate the address of Incoming GMSC at least, and changes the routing optimality operation before carrying out evening.

4. method as claimed in claim 3 is characterized in that, if after afterservice takes place, the VCC operation controlling entity need be retained in the session path, among the then described step C, the VCC operation controlling entity discharges former out session, and is initiated to the out session of preceding commentaries on classics side.

5. method as claimed in claim 3 is characterized in that, if after afterservice takes place, the VCC operation controlling entity need not be retained in the session path, and among the then described step C, the VCC operation controlling entity discharges out session, and notify MGCF that calling is altered course, with commentaries on classics side before being routed to again.

6. method as claimed in claim 5 is characterized in that, the 3XX changed course response of SIP is returned in the Incoming session that the VCC operation controlling entity is sent MGCF, and MGCF alters course to calling with notice.

7. method as claimed in claim 3, it is characterized in that, if after afterservice takes place, the VCC operation controlling entity need not be retained in the session path, among the then described step C, change before the GMSC generation before the VCC operation controlling entity notice IMS territory grappling, initiate to discharge out session by this GMSC, and be initiated to the session of preceding commentaries on classics side.

8. as each described method of claim 3 to 7, it is characterized in that described steps A comprises following substep:

A11, VCC operation controlling entity send message to HLR, with the application customer location, carry late Redirection Information in this message;

A12, HLR inform VMSC/VLR with described late Redirection Information to VMSC/VLR application roaming number the time.

9. method as claimed in claim 8 is characterized in that, described late Redirection Information also comprises: the routing optimality indication.

10. method as claimed in claim 5 is characterized in that, the VCC operation controlling entity is after finishing afterservice, and more new record Central Plains called subscriber's call state is an Idle state.

11. method as claimed in claim 7, it is characterized in that, described VCC operation controlling entity is preserved address and the Call Reference Number that the preceding GMSC of IMS grappling informs at least, and carry the Call Reference Number of being preserved in the signaling of changeing before the GMSC generation before described notice IMS territory grappling, so that this GMSC is associated with former session.

12. method as claimed in claim 2 is characterized in that, described VCC operation controlling entity and Incoming GMSC are provided with respectively.

13. method as claimed in claim 12 is characterized in that, among the described step C, supports the SOR normal process pair route relevant with GMSC to be optimized with routing optimality.

14. method as claimed in claim 13 is characterized in that, described step C comprises following substep:

C1, Incoming GMSC send REL message to MGCF, and indication discharges former calling;

C2, MGCF send CANCEL to the VCC operation controlling entity;

C3, VCC operation controlling entity send CANCEL to MGCF, and indication discharges out session;

C4, MGCF send REL message to called visit ground, to discharge out session.

15., it is characterized in that described steps A comprises following substep as each described method of claim 12 to 14:

After A21, VCC operation controlling entity are known late Redirection Information, described late Redirection Information is associated with routing number;

A22, when receiving the call request that has described routing number, the VCC operation controlling entity is extracted described late Redirection Information according to described incidence relation;

A23, VCC operation controlling entity to called visit obtain in the reciprocal process of roaming number, described late Redirection Information is informed called visit ground.

16. method as claimed in claim 15 is characterized in that, described steps A 21 comprises following substep:

-VCC operation controlling entity is known the address of routing optimality indication, Call Reference Number and Incoming GMSC from the message that Incoming GMSC sends, and returns IMS territory routing number IMRN to Incoming GMSC, inserts the IMS territory so that Incoming GMSC will call out;

-VCC operation controlling entity is carried CS territory routing number CSRN in newly-built IMS territory call request, and described IMRN is related with CSRN.

17. method as claimed in claim 16 is characterized in that, described CSRN is identical with the IMRN part, with related IMRN and CSRN.

18. method as claimed in claim 17 is characterized in that, for described CSRN and IMRN are provided with identical suffix and different prefixes, with related IMRN and CSRN.

19. method as claimed in claim 18, it is characterized in that described steps A 22 comprises: by alternately, when the VCC operation controlling entity is received the message that carries described CSRN, according to described incidence relation, extract the address of routing optimality indication, Call Reference Number and Incoming GMSC.

20. method as claimed in claim 17, it is characterized in that, described steps A 21 comprises: the VCC operation controlling entity is obtained the address of routing optimality indication, Call Reference Number and Incoming GMSC from the message that Incoming GMSC sends, and return IMRN to Incoming GMSC, so that will calling out, Incoming GMSC inserts the IMS territory.

21. method as claimed in claim 20, it is characterized in that, described steps A 22 comprises: by alternately, when the VCC operation controlling entity is received the message that carries described IMRN, extract the address of described routing optimality indication of obtaining, Call Reference Number and Incoming GMSC.

22. method as claimed in claim 15 is characterized in that, described steps A 23 comprises:

-VCC operation controlling entity sends SRI message to HLR, with the application customer location, carries the address of routing optimality indication, Call Reference Number and Incoming GMSC in this SRI message;

-HLR informs VMSC/VLR with the address of described routing optimality indication, Call Reference Number and Incoming GMSC to VMSC/VLR application roaming number the time.

23. method as claimed in claim 12 is characterized in that, the address setting of the GMSC of described VCC operation controlling entity before with the IMS grappling of receiving is the address of Incoming GMSC, changes the routing optimality operation before being used to make GMSC before the IMS grappling to carry out evening.

24. method as claimed in claim 12 is characterized in that, GMSC generates 2 Call Reference Number described VCC operation controlling entity is used the IMS grappling in the late Redirection Information of structure before, so that the GMSC before the IMS grappling is associated with former session.

25. VCC operation controlling entity, comprise: the NeDS execution entity that in the IMS territory, is used to carry out Route Selection, and in the CS territory, be used for carrying out entity with calling out routing redirection to the routing redirection in IMS territory, it is characterized in that described VCC operation controlling entity also comprises:

Evening, the Redirection Information acquiring unit was used for obtaining late Redirection Information from Incoming GMSC side;

The roaming number acquiring unit, be used for to called visit obtain roaming number, and in reciprocal process, late Redirection Information is informed called visit ground, commentaries on classics routing optimality indication before Incoming GMSC transmission is late by the operation of the late preceding commentaries on classics routing optimality of Incoming GMSC execution with making called visit.

26. VCC operation controlling entity as claimed in claim 25 is characterized in that, also comprises in the described VCC operation controlling entity: the CCCF execution entity that in the IMS territory, is used to call out grappling.

27. VCC operation controlling entity as claimed in claim 25 is characterized in that, described late Redirection Information acquiring unit is arranged on routing redirection and carries out in the entity.

28. VCC operation controlling entity as claimed in claim 25, it is characterized in that, described roaming number acquiring unit is arranged on routing redirection and carries out in the entity, perhaps is arranged among the NeDS and NeDS carries out with routing redirection and has the interface that transmits late Redirection Information between the entity.

29. VCC operation controlling entity as claimed in claim 25, it is characterized in that, if comprise the GMSC functional unit in the described VCC operation controlling entity, before generating late Redirection Information and carrying out evening, change the routing optimality operation, and after afterservice takes place, the VCC operation controlling entity need be retained in the session path, then discharges former out session by the VCC operation controlling entity, and is initiated to the out session of preceding commentaries on classics side.

30. VCC operation controlling entity as claimed in claim 29 is characterized in that, described entity also comprises:

Updating block is used for after finishing afterservice, and notice CCCF carries out the more customer call state of new record of entity.

31. VCC operation controlling entity as claimed in claim 25, it is characterized in that, if comprise the GMSC functional unit in the described VCC operation controlling entity, before generating late Redirection Information and carrying out evening, change the routing optimality operation, and after afterservice took place, the VCC operation controlling entity did not need to be retained in the session path, then discharges out session by the VCC operation controlling entity, and notify MGCF that calling is altered course, with commentaries on classics side before being routed to again.

32. VCC operation controlling entity as claimed in claim 31 is characterized in that, the 3XX changed course response of SIP is returned in the Incoming session that the VCC operation controlling entity is sent MGCF, and MGCF alters course to calling with notice.

33. VCC operation controlling entity as claimed in claim 25, it is characterized in that, if comprise the GMSC functional unit in the described VCC operation controlling entity, in order to generate late Redirection Information, the VCC operation controlling entity is preserved the GMSC address before the IMS territory grappling, and after afterservice takes place, the VCC operation controlling entity does not need to be retained in the session path, change before then taking place by the GMSC before the VCC operation controlling entity notice IMS territory grappling, initiate to discharge out session by this GMSC, and be initiated to the session of preceding commentaries on classics side.

34., it is characterized in that described late Redirection Information is generated by the VCC operation controlling entity as each described VCC operation controlling entity of claim 29 to 33.

35. VCC operation controlling entity as claimed in claim 25 is characterized in that, if do not comprise the GMSC functional unit in the described VCC operation controlling entity, also comprises in the then described entity:

Associative cell is used for the late Redirection Information that described late Redirection Information acquiring unit obtains is associated with routing number, so that after receiving the call request that carries described routing number, extracts described late Redirection Information according to described incidence relation.

36., it is characterized in that described late Redirection Information, is perhaps obtained by the interception signaling method by the intelligent trigger mode by late Redirection Information acquiring unit as claim 25,27 or 35 described VCC operation controlling entity.

37. a two net mutual operation network, comprising: HLR, GMSC and VMSC/VLR is characterized in that described network also comprises:

The VCC operation controlling entity, be used to obtain late Redirection Information, and when obtaining roaming number, described late Redirection Information sent to VMSC/VLR by HLR, so that VMSC/VLR indicates Incoming GMSC routing optimality according to late Redirection Information, and finish the late preceding routing optimality that changes by Incoming GMSC and operate.

38. network as claimed in claim 37 is characterized in that, described VCC operation controlling entity comprises:

The roaming number acquiring unit is used for obtaining roaming number to the VMSC/VLR side, and in reciprocal process late Redirection Information is informed VMSC/VLR.

39. network as claimed in claim 38, it is characterized in that, commentaries on classics routing optimality operation before if described VCC operation controlling entity replacement GMSC generates late Redirection Information and carries out evening, and after afterservice takes place, the VCC operation controlling entity need be retained in the session path, then discharge former out session, and be initiated to the out session of preceding commentaries on classics side by the VCC operation controlling entity.

40. network as claimed in claim 39 is characterized in that, described VCC operation controlling entity also comprises: updating block, be used for after finishing afterservice, and trigger the more customer call state of new record.

41. network as claimed in claim 38, it is characterized in that, commentaries on classics routing optimality operation before if described VCC operation controlling entity replacement GMSC generates late Redirection Information and carries out evening, and after afterservice takes place, the VCC operation controlling entity does not need to be retained in the session path, then discharge out session, and notify MGCF that calling is altered course, with commentaries on classics side before being routed to again by the VCC operation controlling entity.

42. network as claimed in claim 38, it is characterized in that, commentaries on classics routing optimality operation before if described VCC operation controlling entity replacement GMSC generates late Redirection Information and carries out evening, the VCC operation controlling entity is preserved the GMSC address before the IMS territory grappling, and after afterservice takes place, the VCC operation controlling entity does not need to be retained in the session path, change before then taking place by the GMSC before the VCC operation controlling entity notice IMS territory grappling, initiate to discharge out session by described GMSC, and be initiated to the session of preceding commentaries on classics side.

43. network as claimed in claim 38 is characterized in that, if described VCC operation controlling entity and GMSC are provided with respectively, also comprises in the then described VCC operation controlling entity: