CN1878344A - Called service route selecting method and system - Google Patents
Called service route selecting method and system Download PDFInfo
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- CN1878344A CN1878344A CNA2005100782809A CN200510078280A CN1878344A CN 1878344 A CN1878344 A CN 1878344A CN A2005100782809 A CNA2005100782809 A CN A2005100782809A CN 200510078280 A CN200510078280 A CN 200510078280A CN 1878344 A CN1878344 A CN 1878344A
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Abstract
The invention relates to a service route select method and relative system, which comprises: when user sends service call, the route strategy decide point of network, according to the register condition of called user at the circuit exchange (CS) field and/or IP multimedia subsystem (IMS) field and the called route strategy auxiliary information, selects the CS field or IMS field to route service to called user. The invention can effectively improve the property of route strategy, to meet complex service supply condition. Therefore, operator can flexibly control the service, and the user can flexibly select service supply method.
Description
Technical field
The present invention relates to moving communicating field, relate in particular to a kind of route selection method and system of called service.
Background technology
Development along with broadband network, under the promotion of multiple application, normal structure such as 3GPP and 3GPP2 has all successively been released IP-based IP multimedia subsystem, IMS (IMS) framework, and purpose is to use a kind of structure of standardized opening to realize diversified multimedia application in the mobile network.The IMS system is by CSCF (Call Session Control Function, CSCF), MGCF (MediaGateway Control Function, MGCF), media resource function (Multimedia ResourceFunction, MRF) and home signature user server (Home Subscriber Server, HSS) etc. functional entity is formed, wherein CSCF can be divided into serving CSCF (S-CSCF) again, proxy CSCF (P-CSCF) and three logic entities of inquiry CSCF (I-CSCF), S-CSCF is the service switching center of IMS, carry out user's registration management, session control, peace preservation association's speech phase, be in charge of user profile, produce charge information etc.; P-CSCF is the access point of terminal user access to IMS, finishes user access control, finishes two-way forwards between other network nodes of user and IMS, is responsible for QoS control and safety management, produces metering data etc.; I-CSCF is responsible for the intercommunication between the IMS territory, and network topology and configuration are externally hidden in the distribution of management S-CSCF, produce metering data etc.The MGCF control gateway realizes the intercommunication of IMS network and other circuit switching (CS) network, and MRF provides media resource, as the folding and unfolding sound, and encoding and decoding and multimedia conferencing bridge.HSS is the most important database of each user, in store all with signatory relevant information, be used to support each network entity to calling out and the processing of session, specifically comprise: user's sign, numbering and addressing information; User's security information; User position information and user's descriptor etc.Between a plurality of entities in HSS and the network interface is arranged.
Because it is irrelevant that the structure of IMS network has been accomplished with the bottom bearer network, therefore the IMS network of 3GPP definition also can be applied on other packet networks outside the packet field network of 3GPP definition, such as the packet network that defines among the 3GPP2, wlan network, and NGN network etc., realized using the independence and and the independence of access network type of terminal type with the user.
From 3GPP Rel-6 version, 3GPP introduces the Access Network of non-3 GPP access network (for example WLAN) as the 3GPP system, insert the IMS system by these Access Networks, some characteristics that are different from the 3GPP Access Network can be provided, for example: than higher access rate, lower rate etc., therefore, (for example in the situation that has WLAN to cover) under certain conditions, the user can preferentially select these Access Networks to insert the IMS business, following situation will occur like this: some business (for example speech business) can provide by traditional CS territory network, and can provide equally by the IMS territory, and the user might be simultaneously in CS territory and the registration of IMS territory, at this moment, and when the user just needs the network decision is professional to route to the user by which territory with business when called.
TR 23.806 has proposed a kind of when the user is registered in CS territory and IMS territory simultaneously in existing 3GPP technical research report, realize the method for called service route control, as shown in Figure 1, it no matter is routing inquiry request (issuing attaching position register HLR) from the CS territory, or routing inquiry request (issuing HSS) from the IMS territory, HLR/HSS can be to routing policy decision point (Routing Policy DecisionPoint, RPDP) require further routing decision, RPDP then according to user current registration scenarios and the preference of active user's setting and the strategy of operator in two territories, determines that finally called service is to route to the user from the CS territory or from the IMS territory.
TR 23.806 has proposed another kind when the user is registered in CS territory and IMS territory simultaneously in existing 3GPP technical research report, realizes the method for called service route control, as shown in Figure 2, in this structure, carries out service logic according to following steps:
1. initial address message (IAM) or the call setup message that comes from the GSM network at external network and call initiator place reaches MSC/GMSC;
2. service logic is called, and in the CS territory, gsmSCP can be used as routing policy decision point (PDP); In the IMS territory, PDP can be an application server (AS), and the interface between itself and the S-CSCF adopts ISC interface (SIp agreement);
3﹠amp; 4.PDP remove to inquire about HLR and HSS to obtain the current login state of user in CS and IMS territory according to service logic;
5﹠amp; 6. based on the strategy of login state and operator, MSC will call out route to the UE in IMS territory or the CS territory;
Similarly, to 12, the IAM message or the INVITE that arrive the IMS system carry out identical processing in step 7.
There is following shortcoming in above-mentioned prior art:
Routing policy decision point in the network is not considered ability of user terminal and access network capability when carrying out Route Selection, can not carry out Route Selection neatly according to the termination function that changes day by day and the Added Business of Access Network.
Summary of the invention
The invention provides a kind of called service route selecting method and system, make network carry out Route Selection neatly according to ability of user terminal and access network capability information.
Called service route selecting method provided by the invention comprises:
When the user initiates service call, the routing policy decision point in the network according to called in circuit switching (CS) territory and/or the login state in IP Multimedia System (IMS) territory and callee side routing decision supplementary select by CS territory or IMS territory routing service to called.
If showing, callee side routing decision supplementary do not support called service, then this called service is carried out respective handling by the professional called unreachable flow process of stipulating itself, or deliver to specific service server according to operator/user's setting and handle, or return the failed message that continues to the calling subscriber.
The concrete grammar that described routing policy decision point is carried out Route Selection is: search the callee side routing decision supplementary and the Route Selection table of comparisons of storage according to current callee side routing decision supplementary, determine the route of selection.
Storage callee side routing decision supplementary and the corresponding preferably route determined in conjunction with the predetermined routing strategy of user or operator in described callee side routing decision supplementary and the Route Selection table of comparisons.
The described callee side routing decision supplementary and the Route Selection table of comparisons are stored in the routing policy decision point, or be stored in one with self contained data base that the routing policy decision point is connected by interface in.
Described callee side routing decision supplementary is stored in presenting in the system or being stored in the information management module of network; The routing policy decision point is obtained callee side routing decision supplementary after receiving the routing decision query requests of network entity initiation from present system or described information management module.
Described callee side routing decision supplementary includes but not limited to: the access network capability information of called ability information of user terminal and/or called current access.
Described ability information of user terminal storage means comprises:
The network entity that maybe can be known ability information of user terminal by user terminal is to described system or the information management module issue ability information of user terminal of presenting; Or
Obtain ability information of user terminal by presenting system or information management module to the information inquiry of user terminal initiating capacity; Or
The ability information of user terminal database is set, and the storage ability information of user terminal presents system or information management module and inquires about described database according to user terminal identification and obtain ability information of user terminal.
The issue of described ability information of user terminal is constantly: any time that is provided with when Adding User terminal under new account when registration, the same IP multimedia public identify (IMPU), when terminal capability upgrades, during endpoint registration, when network requests or according to user/operator.
Described access network capability information storage means comprise:
Issue access network capability information by user terminal or network entity to presenting system or information management module; Or
The access network capability information database is set, and storage access network capability information presents the Access Network sign of carrying when system or information management module are registered according to the user and cell ID and inquires about described database and obtain access network capability information.
The present invention provides a kind of called service path selection system in addition, comprising:
The routing policy decision point;
Present system or information management module; And
Information storage module;
Store the routing decision supplementary in the described information storage module, describedly present the inquiry that system or information management module can be accepted the routing policy decision point; When described routing policy decision point receives the routing decision query requests of network entity initiation,, carry out Route Selection by inquiring about described system or the information management module acquisition routing decision supplementary of presenting.
Described information management module is an independently network entity or be arranged in other network entity or be arranged at described routing policy decision point.
Described information storage module is network entity independently, or is arranged at described presenting in system or the information management module.
Described information storage module is an independently network entity, and it is an existing network interface or according to the new interface of existing protocol definition or be the self-defining interface of operator with the interface that presents system.
Described callee side routing decision supplementary includes but not limited to: the access network capability information of called ability information of user terminal and/or called current access.
Beneficial effect of the present invention is as follows:
1, utilization of the present invention with present the interface of system or set up an information management module, realize the perception of network to user terminal and access network capability, promptly provide the ability information of terminal and access network to presenting system or described information management module, and when network carried out routing decision, relevant entity can obtain these ability information and carry out Route Selection.
2, in the inventive method, when carrying out business continuing, can judge whether support this call business, realize the user is continued to called or carry out other respective handling according to the user terminal and the access network capability that obtain.
3, the present invention can effectively improve the performance of routing decision, and better adapting to complicated service provides environment, the professional method that provides is provided more flexibly for simultaneously operator, selects the method for professional presentation mode more flexibly also for the user.
Description of drawings
Fig. 1 is one of prior art called service route control method schematic diagram;
Fig. 2 is two of a prior art called service route control method schematic diagram;
Fig. 3 is the called service route selecting method flow chart of the embodiment of the invention one;
Fig. 4 is the called service route selecting method flow chart of the embodiment of the invention two.
Embodiment
Called service route selecting method provided by the invention comprises: when the user initiated service call, the routing policy decision point in the network was selected by CS territory or IMS territory routing service extremely called according to called at the login state in circuit switching (CS) territory and IP Multimedia System (IMS) territory and the routing decision supplementary of callee side.
The routing decision supplementary is when carrying out professional route, and on route login state inquiry basis, being used for auxiliary network carries out the information of professional route.The routing decision supplementary includes but not limited to ability information of user terminal and/or wireless access network ability information.
According to said method of the present invention, ability information of user terminal and access network capability information can be stored in the network in advance, specifically comprise:
The ability of method one, user terminal and the ability of access network are registered to and present system:
The ability of terminal can be by user terminal to presenting system issue, and store in the information storage module that presents in the system, also can be to present system to inquire about to terminal and obtain.The ability of terminal also can be by network entity on behalf of issuing to presenting system, and when for example the user registered, S-CSCF registered the ability of user terminal to presenting system.Can replace the user to be meant that to the network entity that presents system registry any and user terminal gets in touch, might know the entity of user terminal information, include but not limited to: the 3GPPAAA server, packet data gateway (PDG), HSS/HLR, S-CSCF, mobile switching centre (MSC), the MSC server, Visited Location Registor (VLR), Serving GPRS Support Node (SGSN), Gateway GPRS Support Node (GGSN), GMLC (GMLC).A database can also be set, the ability information of the inside storage user terminal, the user is when presenting system issue about oneself information, can provide terminal or user's identification information to presenting system, index informations such as type information present system and utilize these index informations to go to inquire about and obtain in the database ability information of terminal.This database can be provided with separately, also can be CS territory network entity, IMS network entity or a part that presents system entity, if be provided with separately, then can utilize present interfaces (needing expanded signalling content and parameter) with the interface that presents system, it also can be the interface of redetermination, specific implementation can adopt CAMEL Application Part agreement (CAP), MAP agreement (MAP), far-end dial-in user service authentication protocol (RADIUS), Diameter, the self-defining agreement of initial session protocol (SIP) or other operators.
Need include but not limited to the information about terminal capability that presents system's issue: terminal is supported the ability of VoIP, the wireless capability of terminal, the business support ability of terminal, the disposal ability of terminal.
Terminal ability information can be in following time trigger to presenting system issue: during the new account registration, during the terminal that Adds User under the same IMPU, when terminal capability upgraded, terminal was when registration, when network claims, or any time that is provided with according to user setting/operator.
The ability information of access network can be issued to presenting system by user terminal, also can be issued to presenting system by the entity in the network, and store in the information storage module that presents in the system.
By network entity under the situation that presents system issue access network capability information, when the user is registered to the IMS territory, user terminal can carry the P-Access-Network-Info header field in registration message, in the P-Access-Network-Info header field, comprise access network type and cell id, out of Memory can be according to access network type and cell id Network Search capability database, this database is the module that increases newly, can independently be provided with, also can close and establish with other network entities, comprise closing and establish and specific application server (AS) closes and establishes etc. with S-CSCF.The access network capability information that AS in P-CSCF in the IMS network, S-CSCF and the security domain can obtain being correlated with, the server that presents in the system can obtain this information as AS.If database is independent setting, then can utilize present interfaces (needing expanded signalling content and parameter) with the interface that presents system, also can be the interface of redetermination, specific implementation can adopt the self-defining agreement of existing protocol or other operators.
By user terminal under the situation that presents system issue access network capability information, terminal directly to presenting system's issue about access network capability information, includes but not limited to: access network type, Access Network wireless capability, Access Network sign, cell ID.Also the Access Network capability database can be set separately, storage Access Network ability, user terminal only need be issued essential informations such as the access network sign of its access and cell ID to presenting system, presents system and goes the Access Network capability database to inquire about.
The ability of method two, user terminal and the ability of access network are registered in the information management module:
This information management module is carried out and is similar to the function that presents system, the terminal that receiving terminal and network send and the ability of access network capability information are arranged, oriented terminal and access network capability information inquiry entity provide the ability of corresponding information, the ability of initiatively obtaining terminal and access network capability information is arranged, the ability of active to network entity issue terminal and access network capability information arranged.This information management module can independently be arranged in the network, also can close and establish with other network entities (for example HLR, HSS etc.), if independent the setting, may comprise with the entity of its interface: user terminal, 3GPP aaa server, PDG, HSS/HLR, S-CSCF, MSC, MSC Server, VLR, SGSN, GGSN, GMLC etc., the corresponding interface agreement can be CAP, MAP, RADIUS, Diameter, SIP or other self-defining agreements of operator etc.
According to said method of the present invention, the present invention provides a kind of called service path selection system in addition, comprising:
The routing policy decision point;
Present system or information management module; And
Information storage module;
Store the routing decision supplementary in the described information storage module, describedly present the inquiry that system or information management module can be accepted the routing policy decision point; When described routing policy decision point receives the routing decision query requests of network entity initiation,, carry out Route Selection by inquiring about described system or the information management module acquisition routing decision supplementary of presenting.
Described information management module is an independently network entity or be arranged in other network entity or be arranged at described routing policy decision point.
Described information storage module is network entity independently, or is arranged at described presenting in system or the information management module.
Described information storage module is an independently network entity, and it is an existing network interface or according to the new interface of existing protocol definition or be the self-defining interface of operator with the interface that presents system.
Route selection method when with specific embodiment the user being initiated service call is below described in detail.
Referring to Fig. 3, for from the calling of other network when the CS territory of Home Network is inserted, called service Route Selection flow process specifically comprises:
1, call out arrival gateway MSC (GMSC), need be routed to the called subscriber, GMSC initiates routing inquiry to HLR;
2, HLR initiates the routing decision request to routing policy decision point RPDP, and carries the registration scenarios information of user in this territory;
3, according to the decision-making of Virtual network operator, RPDP can go the current registration scenarios in the IMS territory of inquiring user to HSS;
4, RPDP goes to present system and obtains the ability information of user terminal and the access network capability information of the current access of user;
5, RPDP carries out routing decision according to the ability information of user terminal and the access network capability information that obtain; The result of decision comprises: business is routed to the called subscriber, business is routed to the called subscriber from the IMS territory from the CS territory, or since ability information of user terminal and access network capability information show when not supporting called service, business is routed to specific service server or directly returns the failure that continues to the calling subscriber; Concrete grammar is:
In RPDP or in a self contained data base, store an ability information and the Route Selection table of comparisons in advance, some records of storage in this table of comparisons, every record comprises following field information: ability information of user terminal, access network capability information and corresponding routing select result; When determining preferred route, can also carry out the selection of route according to the predefined routing decision strategy of user or operator;
Provide one to carry out the instantiation of routing decision below according to ability information of user terminal and access network capability information, as shown in the table:
| User ID | User preference | Carrier policy | Terminal capability | Access network capability | The result of decision |
| User A's | The preferential price of selecting | Preferential selection load is light | Dual-mode terminal (is supported | UTRAN； | From IMS territory route |
| IMSI | Cheap | Network | VOIP among the IMS; Support the GSM speech business) | WLAN | |
| The IMSI of user B | Quality of service is preferential | Guarantee best quality of service | Dual-mode terminal (is supported the VOIP among the IMS; Support the GSM speech business) | UTRAN； WLAN | From CS territory route |
| The IMSI of user C | Quality of service is preferential | Guarantee best quality of service | Common GSM terminal | UTRAN; Do not register at IMS by any Access Network | From CS territory route |
| … | … | … | … | … | … |
This ability information and the Route Selection table of comparisons can carry out corresponding modify or increase respective record according to the ability of user terminal and the variation of access network capability, and be very flexible;
In this service call process, RPDP matches corresponding selection route according to the ability information of user terminal and the access network capability information inquiry ability information and the Route Selection table of comparisons that obtain;
6, RPDP returns routing decision to HLR and replys, and which territory the notice called service should route to the user by;
7, HLR returns routing inquiry to GMSC and replys, and carries the routing iinformation of determining according to current routing decision and carries out follow-up route control for it.
Similarly, the routing decision flow process of arrival called IMS network is similar.
Fig. 4 is for after Home Network mobile switching centre receives that customer service is called out, and the Route Selection flow process when adopting PM PDP gsmSCF (service control function in tactical management-policy decision point GSM network) as the routing policy decision point specifically comprises:
1, MSC receives user's service call, and service logic is called, and MSC carries out routing inquiry to routing policy decision point PM PDP gsmSCF;
2, PM PDP gsmSCF is to the current registration scenarios in the CS territory of HLR inquiring user;
3, PM PDP gsmSCF is to the current registration scenarios in the IMS territory of HSS inquiring user;
4, PM PDP gsmSCF goes to present the ability information that system obtains the access network of the ability information of user terminal and the current access of user;
5, PM PDP gsmSCF in the registration scenarios in CS territory and IMS territory, carries out routing decision according to the ability information that obtains and user; Concrete decision-making technique can be: store an ability information and the Route Selection table of comparisons in PM PDP gsmSCF or in a self contained data base in advance, some records of storage in this table of comparisons, every record comprises following field information: ability information of user terminal, access network capability information and corresponding selection route results; In this service call process, PM PDP gsmSCF matches corresponding selection route according to the ability information of user terminal and the access network capability information inquiry ability information and the Route Selection table of comparisons that obtain;
6, PM PDP gsmSCF returns to MSC with the routing decision result, for it called service is carried out further route control.
Similarly, the routing decision flow process of arrival called IMS network is similar.
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 (15)
1, a kind of called service route selecting method comprises:
When the user initiates service call, the routing policy decision point in the network according to called in circuit switching (CS) territory and/or the login state in IP Multimedia System (IMS) territory and callee side routing decision supplementary select by CS territory or IMS territory routing service to called.
2, the method for claim 1, it is characterized in that, if showing, callee side routing decision supplementary do not support called service, then this called service is carried out respective handling by the professional called unreachable flow process of stipulating itself, or deliver to specific service server according to operator/user's setting and handle, or return the failed message that continues to the calling subscriber.
3, the method for claim 1, it is characterized in that, the concrete grammar that described routing policy decision point is carried out Route Selection is: search the callee side routing decision supplementary and the Route Selection table of comparisons of storage according to current callee side routing decision supplementary, determine the route of selection.
4, method as claimed in claim 3, it is characterized in that storage callee side routing decision supplementary and the corresponding preferably route determined in conjunction with the predetermined routing strategy of user or operator in described callee side routing decision supplementary and the Route Selection table of comparisons.
5, method as claimed in claim 3 is characterized in that, the described callee side routing decision supplementary and the Route Selection table of comparisons are stored in the routing policy decision point, or be stored in one with self contained data base that the routing policy decision point is connected by interface in.
6, the method for claim 1 is characterized in that, described callee side routing decision supplementary is stored in presenting in the system or being stored in the information management module of network; The routing policy decision point is obtained callee side routing decision supplementary after receiving the routing decision query requests of network entity initiation from present system or described information management module.
As the described method of claim 1-6, it is characterized in that 7, described callee side routing decision supplementary includes but not limited to: the access network capability information of called ability information of user terminal and/or called current access.
8, method as claimed in claim 7 is characterized in that, described ability information of user terminal storage means comprises:
The network entity that maybe can be known ability information of user terminal by user terminal is to described system or the information management module issue ability information of user terminal of presenting; Or
Obtain ability information of user terminal by presenting system or information management module to the information inquiry of user terminal initiating capacity; Or
The ability information of user terminal database is set, and the storage ability information of user terminal presents system or information management module and inquires about described database according to user terminal identification and obtain ability information of user terminal.
9, method as claimed in claim 8, it is characterized in that the issue of described ability information of user terminal is constantly: any time that is provided with when Adding User terminal under new account when registration, the same IP multimedia public identify (IMPU), when terminal capability upgrades, during endpoint registration, when network requests or according to user/operator.
10, method as claimed in claim 7 is characterized in that, described access network capability information storage means comprise:
Issue access network capability information by user terminal or network entity to presenting system or information management module; Or
The access network capability information database is set, and storage access network capability information presents the Access Network sign of carrying when system or information management module are registered according to the user and cell ID and inquires about described database and obtain access network capability information.
11, a kind of called service path selection system is characterized in that comprising:
The routing policy decision point;
Present system or information management module; And
Information storage module;
Store the routing decision supplementary in the described information storage module, describedly present the inquiry that system or information management module can be accepted the routing policy decision point; When described routing policy decision point receives the routing decision query requests of network entity initiation,, carry out Route Selection by described system or the information management module Query Information memory module acquisition routing decision supplementary of presenting.
12, system as claimed in claim 11 is characterized in that, described information management module is an independently network entity or be arranged in other network entity or be arranged in the routing policy decision point.
13, system as claimed in claim 11 is characterized in that, described information storage module is network entity independently, or is arranged at described presenting in system or the information management module.
14, system as claimed in claim 11 is characterized in that, described information storage module is an independently network entity, and it is an existing network interface or according to the new interface of existing protocol definition or be the self-defining interface of operator with the interface that presents system.
As the described method of claim 11-14, it is characterized in that 15, described callee side routing decision supplementary includes but not limited to: the access network capability information of called ability information of user terminal and/or called current access.
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| CNB2005100782809A CN100461881C (en) | 2005-06-07 | 2005-06-07 | Called service route selecting method and system |
| PCT/CN2006/001239 WO2006131071A1 (en) | 2005-06-07 | 2006-06-07 | A service route control method |
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| CNB2005100782809A CN100461881C (en) | 2005-06-07 | 2005-06-07 | Called service route selecting method and system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2007095836A1 (en) * | 2006-02-22 | 2007-08-30 | Huawei Technologies Co., Ltd. | A method for equality accessing in the packet network and the system thereof |
| CN103069881A (en) * | 2010-08-20 | 2013-04-24 | 三星电子株式会社 | Retrieval of user equipment capabilities by application server |
| CN104135755A (en) * | 2013-05-02 | 2014-11-05 | 中国移动通信集团公司 | Termination call network selection method and system, termination call selection server, and terminal |
| US9313818B2 (en) | 2011-09-29 | 2016-04-12 | Zte Corporation | Method and system for converging call |
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| EP1076473A1 (en) * | 1999-08-11 | 2001-02-14 | Inalp Networks AG | Method and a network node for selectively transferring data to multiple networks |
| US6757275B2 (en) * | 2000-09-11 | 2004-06-29 | Bob Sorrentino | Method and system of managing connections between circuit-switched and packet-switched networks |
| US6882640B1 (en) * | 2000-09-22 | 2005-04-19 | Siemens Communications, Inc. | System and method for utilizing circuit switched and packet switched resources |
| CN100372338C (en) * | 2003-10-23 | 2008-02-27 | 华为技术有限公司 | Method for realizing local business in IP multimedia sub-system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2007095836A1 (en) * | 2006-02-22 | 2007-08-30 | Huawei Technologies Co., Ltd. | A method for equality accessing in the packet network and the system thereof |
| CN103069881A (en) * | 2010-08-20 | 2013-04-24 | 三星电子株式会社 | Retrieval of user equipment capabilities by application server |
| US9420526B2 (en) | 2010-08-20 | 2016-08-16 | Samsung Electronics Co., Ltd. | Retrieval of user equipment capabilities by application server |
| CN103069881B (en) * | 2010-08-20 | 2017-04-26 | 三星电子株式会社 | Application server and execution method thereof |
| CN107105481A (en) * | 2010-08-20 | 2017-08-29 | 三星电子株式会社 | Service centralization and application server for continuity and its method |
| CN107105481B (en) * | 2010-08-20 | 2020-09-22 | 三星电子株式会社 | Service centralization and continuity application server and method thereof |
| US9313818B2 (en) | 2011-09-29 | 2016-04-12 | Zte Corporation | Method and system for converging call |
| CN104135755A (en) * | 2013-05-02 | 2014-11-05 | 中国移动通信集团公司 | Termination call network selection method and system, termination call selection server, and terminal |
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