CN101102608B - A method for realizing central server call in IP multimedia subsystem - Google Patents
A method for realizing central server call in IP multimedia subsystem Download PDFInfo
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- CN101102608B CN101102608B CN2007101401593A CN200710140159A CN101102608B CN 101102608 B CN101102608 B CN 101102608B CN 2007101401593 A CN2007101401593 A CN 2007101401593A CN 200710140159 A CN200710140159 A CN 200710140159A CN 101102608 B CN101102608 B CN 101102608B
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Abstract
The invention is used in the circuit-domain enhanced network architecture. It comprises: after user device initiates an IMS centralized services calling, it establishes the bearer control path and session control path to the IMS circuit domain control function (ICCF); said ICCF is used to replace the calling user to initiate a call to IMS; during the process of establishing the bearer control path, after the local link access adaptive function (L-CAAF-n) receives the call establishment message, it decides the attribute of user device; if it doesn't support IMS centralized services, then using ICCF address to replace the called number, and according to the ICCF address to route to ICCF to establish the bearer control path; if user device supports the IMS centralized service, it directly establishes bearer control path according to the ICCF address in the message. The invention let the ICS UE and non ICS UE realize the calling business in ICS framework added from the CS network.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of method that realizes the caller of IP Multimedia System centralized traffic.
Background technology
Network interconnection protocol IP (Internet Protocol) multimedia subsystem, IMS (IP Multimedia CoreNetwork Subsystem) is by third generation partner program 3GPP (3rd GenerationPartnership Project); A kind of IP-based network framework that proposes; It has made up an opening and service environment flexibly; Support multimedia application, and abundant multimedia service is provided for the user.
IMS is based on the communication network framework of IP; Irrelevant with access technology; Except can providing professional for global system for mobile communications GSM (Global System for Mobile communications), unified mobile communcations system UMTS mobile cellular networks such as (Universal Mobile Telecommunications System) for general packet radio service gprs (General Packet Radio Service), WLAN WLAN packet access networks such as (WirelessLocal Area Network) provide the business.
Wherein mobile cellular network such as GSM, UMTS adopts circuit-switched technology, is called circuit CS (Circuit Switched) territory, can basic speech business be provided for the user, and based on the supplementary service of speech business.When IMS was inserted in the CS territory, it developed into a kind of access way, and business provides by IMS is unified fully, and this technology is called IMS centralized traffic ICS (IMS Centralized Service).
IMS centralized traffic ICS has the following advantages:
(1) IMS is that access waies such as circuit domain, packet domain provide consistent business, and network enabled merges;
(2) support the CS network to the evolution of IMS network;
(3) not only support to have ICS ability subscriber equipment, also support the existing subscriber equipment that does not possess the ICS ability.
Wherein user equipment (UE) (User Equipment) is divided into the UE (ICS UE) that supports the ICS ability and does not support two types of the UE (non ICS UE) of ICS ability in the CS network.
Network side has 2 entities, is respectively that circuit domain inserts adaption function entity CAAF (CS AccessAdaptation Function) and remote subscriber is acted on behalf of RUA (Remote User Agent).Wherein CAAF is the adaption function entity of business control signaling between CS territory and the IMS, transport service control signaling between CS territory UE and RUA, and RUA utilizes the information foundation and the control IMS session of obtaining from CAAF.RUA is a Session initiation Protocol SIP (See IP) user agent, represents UE to insert the IMS network.
CAAF can be divided into the remote circuitry territory again and insert adaption function entity R-CAAF (Remote CSAccess Adaptation Function) and local circuit territory access adaption function entity L-CAAF (LocalCS Access Adaptation Function).Wherein R-CAAF is positioned at home network and RUA forms IMS circuit domain control function entity ICCF (IMS CS Control Function) jointly, calls out the access point that inserts IMS as the CS territory.For ICS UE, L-CAAF is integrated among the ICS UE, and for non ICS UE, L-CAAF is arranged in VMSC or is positioned between UE and the Visited Mobile Switching Center VMSC (Visited Mobile Switch Center), is called L-CAAF-n.
And the framework of CS network enhancing IMS centralized control business is as shown in Figure 1, comprises following network element:
UE101, it is ICS UE or non ICS UE;
L-CAAF-n102, it can be arranged in VMSC, also can be between VMSC and UE;
VMSC103 is the exchange that UE roams into;
Home subscriber server 104HSS (Home Subscriber Server) is used to preserve the user data of UE;
MGCF entity 105MGCF (Media Gateway Control Function) is used to control the gateway of medium;
WMG 106MGW (Media Gateway) wherein has media resource;
IMS circuit domain control function entity 107ICCF (IMS CS Control Function);
Call conversation control function entity 108CSCF (Call Session Control Function).
Strengthen in the professional framework of IMS centralized control at CS network as shown in Figure 1, UE101 can set up 3 paths to the ICCF107 in IMS territory: session is set up the path, is carried control path and bearer path.
Wherein there is dual mode in the session control path: a kind of L-CAAF-n of being (102) adopts the SIP signaling, arrives ICCF through CSCF; Another kind is that L-CAAF-n adopts unstructuredness supplementary service data USSD (Unstructured Supplementary Service Data), arrives ICCF through HSS.The session control path is used for session control, realizes that in the ICS business caller controlling call is set up and the supplementary service of control IC S UE.
Carry control path UE through L-CAAF-n or VMSC, and arrive ICCF through MGCF and CSCF.Wherein VMSC adopts integrated digital service-user part signaling ISUP (ISDNUser Part) to MGCF; It is the SIP signaling that adopts that MGCF arrives ICCF through CSCF; For ICS UE; UE is the CS control signaling access of standard to VMSC; And for non ICS UE, UE (101) is the CS control signaling access of standard to L-CAAF-n, and L-CAAF-n is between the VMSC 103 be the employing internal interface together; Also possibly there is MAP MAP (Mobile Application Part) in the base station of perhaps adopting standard to the interface A mouth between the VMSC.Carry the control path and be mainly used in of the carrying foundation of control CS territory to the IMS territory.
Bearer path UE is through the MGW in VMSC or VMSC and L-CAAF-n arrival IMS territory.Bearer path provides the required bearing resource of call session.
By on can find out that strengthen in the professional framework of IMS centralized control at the CS network, ICS UE and non ICS UE can't realize the calling service of ICS under the ICS framework of circuit-domain network increase.
Summary of the invention
Technical problem to be solved by this invention is a kind of method that realizes IP Multimedia System centralized traffic ICS caller to be provided, thereby to strengthen in the framework calling service of the IMS centralized traffic of realization ICS UE and non ICS UE in circuit-domain network.
The invention provides; A kind of method that realizes the caller of IP Multimedia System centralized traffic; Be applied to circuit-domain network and strengthen in the framework, after subscriber equipment is initiated the caller of IMS centralized traffic, be established to carrying control path and the session control words footpath of IMS circuit domain control function entity ICCF; Said ICCF related said carrying control path and session control path replace the calling subscriber to make a call to IMS;
Wherein set up in the process of carrying the control path; After link-local territory access adaption function entity L-CAAF-n receives the call setup message of calling subscriber equipment transmission, judge the calling subscriber equipment attribute, as being the subscriber equipment of not supporting the IMS centralized traffic; Called number with ICCF address replacement call setup; Be routed to ICCF according to the ICCF address again and set up carrying control path,, directly carry the control path according to the foundation of the ICCF address in the message as for supporting the subscriber equipment of IMS centralized traffic.
In the said method; The subscriber equipment of not supporting the IMS centralized traffic is to set up the session control path in the following manner: after said L-CAAF-n receives the call setup message of calling subscriber equipment transmission; Judge the calling subscriber equipment attribute when not supporting the IMS centralized traffic, set up message through said session control path to the ICCF initiation session by L-CAAF-n.
Support that the subscriber equipment of IMS centralized traffic is to set up the session control path in the following manner: directly set up message to the ICCF initiation session through said session control path by subscriber equipment.
In the said method, when said session control path adopted Session initiation Protocol SIP signaling method to set up, said L-CAAF-n set up message through call conversation control function entity CSCF to said ICCF initiation session; Said session control path, when adopting unstructuredness supplementary service data USSD mode to set up, said L-CAAF-n makes a call to ICCF through home subscriber server HSS and sets up message.
Said session control path, when adopting the SIP signaling method to set up, subscriber equipment is directly set up message through CSCF to said ICCF initiation session; Said session control path, when adopting the USSD mode to set up, subscriber equipment makes a call to said ICCF through said L-CAAF-n, Visited Mobile Switching Center VMSC, HSS successively and sets up message.
Said judgement calling subscriber equipment attribute, any mode below adopting:
The said L-CAAF-n of I judges whether the called number that carries in the call setup message is identical with the calling subscriber's who self preserves ICCF address, if the calling subscriber is IMS centralized traffic user, otherwise is non-IMS centralized traffic user;
The said L-CAAF-n of II is according to the calling subscriber equipment attribute of self preserving, and whether directly judge the calling subscriber is IMS centralized traffic user;
The said L-CAAF-n of III is according to calling subscriber's ability of carrying in the call setup message, and whether directly judge the calling subscriber is IMS centralized traffic user;
If the said L-CAAF-n of IV receives session control path IMS centralized traffic Client-initiated USSD call setup message earlier, then judging the calling subscriber is IMS centralized traffic user.
Saidly set up to carry the control path according to the ICCF address and be divided into following steps:
Step a:L-CAAF-n sends call setup message to Visited Mobile Switching Center VMSC, and the called number information that said message is carried is the ICCF address;
Step b:VMSC initiates the ISUP initial address message to MGCF entity MGCF, and the called number information that said message is carried is the ICCF address;
Step c:MGCF sends the SIP conversation request message through CSCF to ICCF.
When said calling subscriber equipment was supported the IMS centralized traffic, the called number information that carries in the call setup message of its transmission was the ICCF address; When said calling subscriber equipment is not supported the IMS centralized traffic, carry real called number information in the call setup message of its transmission.
The present invention also provides; The method for building up in the carrying control path of a kind of IMS centralized traffic caller; After wherein link-local territory access adaption function entity L-CAAF-n receives the call setup message of calling subscriber equipment transmission, judge the calling subscriber equipment attribute, as being the subscriber equipment of not supporting the IMS centralized traffic; Called number with IMS circuit domain control function entity ICCF address replacement call setup; Be routed to ICCF according to the ICCF address again and set up carrying control path,, directly carry the control path according to the foundation of the ICCF address in the message as for supporting the subscriber equipment of IMS centralized traffic.
In the said method, said judgement calling subscriber equipment attribute, any mode below adopting:
The said L-CAAF-n of I judges whether the called number that carries in the call setup message is identical with the calling subscriber's who self preserves ICCF address, if the calling subscriber is IMS centralized traffic user, otherwise is non-IMS centralized traffic user;
The said L-CAAF-n of II is according to the calling subscriber equipment attribute of self preserving, and whether directly judge the calling subscriber is IMS centralized traffic user;
The said L-CAAF-n of III is according to calling subscriber's ability of carrying in the call setup message, and whether directly judge the calling subscriber is IMS centralized traffic user;
If the said L-CAAF-n of IV receives session control path IMS centralized traffic Client-initiated USSD call setup message earlier, then judging the calling subscriber is IMS centralized traffic user.
The inventive method has increased the judgement to the calling subscriber equipment attribute in the functional entity L-CAAF-n that circuit-domain network strengthens, make ICS UE and non ICS UE under the ICS framework that circuit-domain network increases, can both realize the calling service of ICS.
Description of drawings
Fig. 1 is that the CS network strengthens the professional configuration diagram of IMS centralized control;
Fig. 2 is the flow chart that adopts the embodiment 1 of technical scheme of the present invention;
Fig. 3 is the flow chart that adopts the embodiment 2 of technical scheme of the present invention.
Embodiment
To combine accompanying drawing that technical scheme of the present invention is done detailed explanation of a step below.
Core concept of the present invention is: in the functional entity L-CAAF-n that the CS network strengthens, increase the judgement to the calling subscriber equipment attribute; Be that can to judge calling number be ICS UE or nonICS is UE to L-CAAF-n; Determine whether to use the called number of ICCF address replacement call setup then, finally be implemented in the caller ICS business that the CS network strengthens the ICS UE and the nonICS UE of IMS centralized traffic under the professional framework of IMS centralized control.
Embodiment 1, for the CS network strengthens under the professional framework of IMS centralized control, and the caller process that ICS UE and non ICS adopt the USSD mode under the CS territory to set up in the session control path, its flow process is as shown in Figure 2.
Wherein process is set up in the professional caller of the IMS centralized control of non ICS UE, may further comprise the steps:
A201:non ICS UE makes a call to L-CAAF-n and sets up message, and said message is carried real called number information;
A202:L-CAAF-n is according to the message of call setup, and judging the calling subscriber equipment attribute is nonICS UE, then the called number of call setup message is replaced with the ICCF address;
In this step, L-CAAF-n judges the calling subscriber equipment attribute, and following several kinds of modes are arranged:
The calling subscriber's who preserves among the called number of L-CAAF-n judgement call setup message and the L-CAAF-n ICCF address is inconsistent, and judging this calling subscriber is non ICS UE;
It is non ICSUE that L-CAAF-n the calling subscriber according to the calling subscriber equipment determined property of self preserving;
It is non ICS UE that L-CAAF-n judges the calling subscriber according to calling subscriber's ability of carrying in the call setup message.
A203:L-CAAF-n sends call setup message to VMSC carrying on the control path, and the called number information that said message is carried is the ICCF address, and when L-CAAF-n and VMSC close when being made as one, said message is inside story;
A204:VMSC sends the ISUP initial address message to MGCF, and the called number information that said message is carried is the ICCF address;
A205:MGCF sends out the SIP conversation request message through CSCF to ICCF;
A206:L-CAAF-n sends the USSD call setup message through HSS to ICCF on the session control path, said message is carried real called number;
After A207:ICCF receives session control path and the message of carrying the control path, correlating sessions control path with carry the control path, replace the calling subscriber to the CSCF in the IMS territory message that initiates a session request;
A208:CSCF is to the callee side message that initiates a session request.
Steps A 206 can be in execution in step A203, or before the execution in step A203, or after execution in step A203, operate.
Process is set up in the professional caller of the IMS centralized control of ICS UE, may further comprise the steps:
B201:ICS UE makes a call to L-CAAF-n and sets up message, and it is the ICCF address that said message is carried called number;
B202:L-CAAF-n is according to the message of call setup, and judging the calling subscriber equipment attribute is ICSUE, then need not replace the called number of call setup message;
In this step, L-CAAF-n judges the calling subscriber equipment attribute, and following several kinds of modes are arranged:
The calling subscriber's who preserves among the called number that L-CAAF-n judges call setup message and the L-CAAF-n ICCF address is identical, and judging this calling subscriber is ICS UE;
It is ICS UE that L-CAAF-n goes out the calling subscriber according to preservation calling subscriber equipment determined property;
L-CAAF-n judges that according to calling subscriber's ability of carrying in the call setup message calling subscriber is ICSUE;
If L-CAAF-n receives the USSD call setup message that session control path ICS UE initiates earlier, then judging the calling subscriber is ICS UE.
B203:L-CAAF-n sends call setup message to VMSC carrying on the control path, and the called number information that said message is carried is the ICCF address, and when L-CAAF-n and VMSC close when being made as one, said message is inside story;
B204:VMSC sends the ISUP initial address message to MGCF, and the called number information that said message is carried is the ICCF address;
B205:MGCF sends out the SIP conversation request message through CSCF to ICCF;
B206:ICS UE sends the USSD call setup message through L-CAAF-n, VMSC and HSS (104) to ICCF on the session control path, said message is carried real called number;
After B207:ICCF receives session control path and the message of carrying the control path, correlating sessions control path with carry the control path, replace the calling subscriber to the CSCF in the IMS territory message that initiates a session request;
B208:CSCF is to the callee side message that initiates a session request.
Step B206 can be in execution in step B201, or before the execution in step B201, or after execution in step B201, operate.
Embodiment 2, and for the CS network strengthens under the professional framework of IMS centralized control, ICS UE and nonICS adopt the SIP mode to set up the process of caller in the session control path, and its flow process is as shown in Figure 3.
Wherein process is set up in the professional caller of the IMS centralized control of non ICS UE, may further comprise the steps:
C301:non ICS UE makes a call to L-CAAF-n and sets up message, and said message is carried real called number;
C302:L-CAAF-n is according to the message of call setup, and judging the calling subscriber equipment attribute is nonICS UE, and the called number of call setup message is replaced with the ICCF address;
In this step, L-CAAF-n judges the calling subscriber equipment attribute, and following several kinds of modes are arranged:
The calling subscriber's who preserves among the called number of L-CAAF-n judgement call setup message and the L-CAAF-n ICCF address is inconsistent, and judging this calling subscriber is non ICS UE;
L-CAAF-n preserves the calling subscriber equipment attribute according to self, judges that the calling subscriber is non ICSUE;
L-CAAF-n is according to calling subscriber's ability of carrying in the call setup message, and judging the calling subscriber is non ICS UE.
C303:L-CAAF-n sends call setup message to VMSC carrying on the control path, and the called number that said message is carried is the ICCF address, and when L-CAAF-n and VMSC close when being made as one, said message is inside story;
C304:VMSC sends the ISUP initial address message to MGCF, and the called number information that said message is carried is the ICCF address;
C305:MGCF sends out the SIP conversation request message through CSCF to ICCF;
C306:L-CAAF-n sends the SIP conversation request message through CSCF to ICCF on the session control path, said message is carried real called number;
After C307:ICCF receives session control path and the message of carrying the control path, correlating sessions control path with carry the control path, replace the calling subscriber to the CSCF in the IMS territory message that initiates a session request;
C308:CSCF is to the callee side message that initiates a session request.
Step C306 can be in execution in step C303, or before the execution in step C303, or after execution in step C303, operate.
Process is set up in the professional caller of the IMS centralized control of ICS UE, may further comprise the steps:
D301:ICS UE makes a call to L-CAAF-n and sets up message, and it is the ICCF address that said message is carried called number;
D302, L-CAAF-n judge that according to the message of call setup the calling subscriber is ICS UE, then need not replace the called number of call setup message;
In this step, L-CAAF-n judges the calling subscriber equipment attribute, and following several kinds of modes are arranged:
The calling subscriber's who preserves among the called number that L-CAAF-n judges call setup message and the L-CAAF-n ICCF address is identical, and judging this calling subscriber is ICS UE;
L-CAAF-n preserves the calling subscriber equipment attribute according to self, and judging the calling subscriber is ICS UE;
L-CAAF-n is according to calling subscriber's ability of carrying in the call setup message, and judging the calling subscriber is ICS UE.
D303:L-CAAF-n sends call setup message to VMSC carrying on the control path, and the called number that said message is carried is the ICCF address, and when L-CAAF-n and VMSC close when being made as one, said message is inside story;
D304:VMSC sends the ISUP initial address message to MGCF, and the called number information that said message is carried is the ICCF address;
D305:MGCF sends out the SIP conversation request message through CSCF to ICCF;
D306:ICS UE sends the USSD call setup message through CSCF to ICCF on the session control path, said message is carried real called number;
After D307:ICCF receives session control path and the message of carrying the control path, correlating sessions control path with carry the control path, replace the calling subscriber to the CSCF in the IMS territory message that initiates a session request;
D308:CSCF is to the callee side message that initiates a session request.
Step D306 can be in execution in step D301, or before the execution in step D301, or after execution in step D301, operate.
From embodiment 1,2, can find out, take technical scheme of the present invention, make ICS UE and nonICS UE be achieved at the IMS centralized traffic calling service that circuit-domain network increases under the framework.
Certainly; The present invention also can have other various embodiments; Under the situation that does not deviate from spirit of the present invention and essence thereof; Those of ordinary skill in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (10)
1. method that realizes the caller of IP Multimedia System centralized traffic; Being applied to circuit-domain network strengthens in the framework; After subscriber equipment is initiated the caller of IMS centralized traffic; Be established to carrying control path and the session control words footpath of IMS circuit domain control function entity ICCF, said ICCF related said carrying control path and session control path replace the calling subscriber to make a call to IMS;
It is characterized in that,
Set up in the process of carrying the control path; After link-local territory access adaption function entity L-CAAF-n receives the call setup message of calling subscriber equipment transmission, judge the calling subscriber equipment attribute, as being the subscriber equipment of not supporting the IMS centralized traffic; Called number with ICCF address replacement call setup; Be routed to ICCF according to the ICCF address again and set up carrying control path,, directly carry the control path according to the foundation of the ICCF address in the message as for supporting the subscriber equipment of IMS centralized traffic.
2. the method for claim 1; It is characterized in that; The subscriber equipment of not supporting the IMS centralized traffic is to set up the session control path in the following manner: after said L-CAAF-n receives the call setup message of calling subscriber equipment transmission; Judge the calling subscriber equipment attribute when not supporting the IMS centralized traffic, set up message through said session control path to the ICCF initiation session by L-CAAF-n.
3. the method for claim 1 is characterized in that, supports that the subscriber equipment of IMS centralized traffic is to set up the session control path in the following manner: directly set up message through said session control path to the ICCF initiation session by subscriber equipment.
4. method as claimed in claim 2 is characterized in that, when said session control path adopted Session initiation Protocol SIP signaling method to set up, said L-CAAF-n set up message through call conversation control function entity CSCF to said ICCF initiation session; Said session control path, when adopting unstructuredness supplementary service data USSD mode to set up, said L-CAAF-n makes a call to ICCF through home subscriber server HSS and sets up message.
5. method as claimed in claim 3 is characterized in that, said session control path, and when adopting Session initiation Protocol SIP signaling method to set up, subscriber equipment is directly set up message through call conversation control function entity CSCF to said ICCF initiation session; Said session control path, when adopting unstructuredness supplementary service data USSD mode to set up, subscriber equipment makes a call to said ICCF through said L-CAAF-n, Visited Mobile Switching Center VMSC, home subscriber server HSS successively and sets up message.
6. the method for claim 1 is characterized in that, said judgement calling subscriber equipment attribute, and any mode below adopting:
The said L-CAAF-n of I judges whether the called number that carries in the call setup message is identical with the calling subscriber's who self preserves ICCF address, if the calling subscriber is IMS centralized traffic user, otherwise is non-IMS centralized traffic user;
The said L-CAAF-n of II is according to the calling subscriber equipment attribute of self preserving, and whether directly judge the calling subscriber is IMS centralized traffic user;
The said L-CAAF-n of III is according to calling subscriber's ability of carrying in the call setup message, and whether directly judge the calling subscriber is IMS centralized traffic user;
If the said L-CAAF-n of IV receives session control path IMS centralized traffic Client-initiated unstructuredness supplementary service data USSD call setup message earlier, then judging the calling subscriber is IMS centralized traffic user.
7. the method for claim 1 is characterized in that, saidly set up to carry the control path according to the ICCF address and is divided into following steps:
Step a:L-CAAF-n sends call setup message to Visited Mobile Switching Center VMSC, and the called number information that said message is carried is the ICCF address;
Step b: Visited Mobile Switching Center VMSC initiates integrated digital service-user part ISUP initial address message to MGCF entity MGCF, and the called number information that said message is carried is the ICCF address;
Step c: MGCF entity MGCF sends Session initiation Protocol SIP conversation request message through call conversation control function entity CSCF to ICCF.
8. the method for claim 1 is characterized in that, when said calling subscriber equipment was supported the IMS centralized traffic, the called number information that carries in the call setup message of its transmission was the ICCF address; When said calling subscriber equipment is not supported the IMS centralized traffic, carry real called number information in the call setup message of its transmission.
9. the method for building up in path is controlled in the carrying of IMS centralized traffic caller; It is characterized in that; After link-local territory access adaption function entity L-CAAF-n receives the call setup message of calling subscriber equipment transmission, judge the calling subscriber equipment attribute, as being the subscriber equipment of not supporting the IMS centralized traffic; Called number with IMS circuit domain control function entity ICCF address replacement call setup; Be routed to ICCF according to the ICCF address again and set up carrying control path,, directly carry the control path according to the foundation of the ICCF address in the message as for supporting the subscriber equipment of IMS centralized traffic.
10. method as claimed in claim 9 is characterized in that, said judgement calling subscriber equipment attribute, and any mode below adopting:
The said L-CAAF-n of I judges whether the called number that carries in the call setup message is identical with the calling subscriber's who self preserves ICCF address, if the calling subscriber is IMS centralized traffic user, otherwise is non-IMS centralized traffic user;
The said L-CAAF-n of II is according to the calling subscriber equipment attribute of self preserving, and whether directly judge the calling subscriber is IMS centralized traffic user;
The said L-CAAF-n of III is according to calling subscriber's ability of carrying in the call setup message, and whether directly judge the calling subscriber is IMS centralized traffic user;
If the said L-CAAF-n of IV receives session control path IMS centralized traffic Client-initiated unstructuredness supplementary service data USSD call setup message earlier, then judging the calling subscriber is IMS centralized traffic user.
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| CN101370307B (en) * | 2008-09-05 | 2012-04-25 | 华为技术有限公司 | Communication network anchorage method and device |
| CN101505344B (en) * | 2009-03-09 | 2012-08-08 | 华为技术有限公司 | Communication network anchorage method and device |
| CN102547651B (en) * | 2010-12-14 | 2015-06-10 | 中兴通讯股份有限公司 | User roaming method and ICS (internet connection sharing) enhanced network |
| CN102572785B (en) * | 2010-12-14 | 2015-08-12 | 中兴通讯股份有限公司 | User's loaming method and ICS strengthen network |
| CN102571549B (en) * | 2010-12-21 | 2014-12-24 | 中国移动通信集团浙江有限公司 | Method and device for anchoring IP multimedia subsystem (IMS) intelligently |
| CN102595372B (en) * | 2011-01-14 | 2018-05-22 | 中兴通讯股份有限公司 | User's loaming method and ICS enhancing networks |
| CN106209723B (en) * | 2015-04-29 | 2019-08-13 | 中国电信股份有限公司 | Call processing method and BAC Extension arrangement based on BAC cluster |
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| WO2001003450A1 (en) * | 1999-06-30 | 2001-01-11 | Nokia Corporation | Bearer adapter management at a gateway server |
| CN1751493A (en) * | 2003-02-15 | 2006-03-22 | 艾利森电话股份有限公司 | Conversational bearer negotiation |
| WO2007023358A2 (en) * | 2005-08-22 | 2007-03-01 | Nortel Networks Limited | Multimedia subsystem service control for circuit-switched subsystem calls |
| CN1984097A (en) * | 2006-06-01 | 2007-06-20 | 华为技术有限公司 | Method for processing sided calling in network |
-
2007
- 2007-08-08 CN CN2007101401593A patent/CN101102608B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001003450A1 (en) * | 1999-06-30 | 2001-01-11 | Nokia Corporation | Bearer adapter management at a gateway server |
| CN1751493A (en) * | 2003-02-15 | 2006-03-22 | 艾利森电话股份有限公司 | Conversational bearer negotiation |
| WO2007023358A2 (en) * | 2005-08-22 | 2007-03-01 | Nortel Networks Limited | Multimedia subsystem service control for circuit-switched subsystem calls |
| CN1984097A (en) * | 2006-06-01 | 2007-06-20 | 华为技术有限公司 | Method for processing sided calling in network |
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| CN101102608A (en) | 2008-01-09 |
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