CN1925525A - Method for realizing bridged collection of IP multimedia subsystem - Google Patents
Method for realizing bridged collection of IP multimedia subsystem Download PDFInfo
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- CN1925525A CN1925525A CN 200510098214 CN200510098214A CN1925525A CN 1925525 A CN1925525 A CN 1925525A CN 200510098214 CN200510098214 CN 200510098214 CN 200510098214 A CN200510098214 A CN 200510098214A CN 1925525 A CN1925525 A CN 1925525A
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Abstract
This invention discloses one IMS method, which comprises the following steps: PSTN user sends demands to operator IMS network MGCF; MGCF transfers the received calls to I-CSCF; I-CSCF receives calls demands to determine main and called part types and network operators according to call demands; transferring call demands to called part according to main and passive calls of network types and operator.
Description
Technical field
The present invention relates to the IP Multimedia System field, be specifically related to a kind of method that realizes the IP Multimedia System bridge joint.
Background technology
IP Multimedia System (IMS, IP Multimedia Subsystem) is the subsystem of the support IP multimedia service that proposes in Release 5 release criteria of third generation partner plan (3GPP, Third Generation Partnership Project).IMS mainly comprises: CSCF (CSCF, Call Session Control Function), MGCF (MGCF, Media GatewayControl Function), media gateway, media resource function control section, media resource function processing section, Breakout Gateway Control Function functional entitys such as (BGCF, Breakout Gateway Control Function).MGCF realizes IMS net and circuit domain, public switch telephone network (PSTN, PublicSwitched Telephone Network) functional entity of intercommunication, BGCF is the separation of IMS net and external network, CSCF is the kernel entity of IMS, it comprises proxy CSCF (Proxy-CSCF), inquiry CSCF (I-CSCF, Interrogating-CSCF) and serving CSCF (S-CSCF, Serving-CSCF), wherein, the terminal that provides I-CSCF arrives the inlet of IMS home domain, and S-CSCF finishes the conversation control function to terminal.
The core characteristics of IMS be based on conversation initialized protocol (SIP, Session Initiation Protocol) and with the independence of access technology.IMS can support the mobile service of real-time user to the user, for example: multi-media voice and visual telephone business etc.Be used to support that the user comprises to the IMS mechanism of user's communications business: session negotiation and management, service quality (QoS, Quality of Service) and mobile management etc.By the IMS technology, operator also can release non real-time user to customer service as chat service and instant messaging etc.; Multi-user service is as multimedia conference service and multimedia chatroom business etc.; And server to customer service as the dynamic professional and Click To Dial of pushing-type etc.
According to network integration thought, operator can be smoothly transitted into the all-IP net from existing network by the IMS technology.Because IMS adopts the Session Initiation Protocol of IPization, so it can provide a unified core net processing platform for PSTN user and IMS user.This IMS territory as unified processing platform, be called IMS bridge joint (IMS Bridging) for the user based on heterogeneous networks provides unified technology of calling out control.As shown in Figure 1, the IMS bridge joint support between the IMS user, between the SIP network users between the PSTN user, except that IMS, between IMS user and PSTN user, between IMS user and the SIP network users except that IMS and the intercommunication between PSTN user and the SIP network users except that IMS.
Network entity in the IMS territory is more, in the call process, can come the forwarded calls request by a plurality of network entities, realizes in the entire I MS territory that the network entity of routing function comprises: I-CSCF, S-CSCF, BGCF and MGCF.Prior art has defined the situation that realizes the IMS bridge joint when caller is IMS user at present.According to the definition IMS bridge joint situation, the flow chart that IMS user calls out in the prior art as shown in Figure 2, its concrete steps are as follows:
Step 201:IMS user to the S-CSCF request of making a call that self belongs to, carries the calling and called number as caller in this call request message.
Step 202:S-CSCF determines the type and the operator of caller home network according to the calling number of carrying in the call request message.
Step 203:S-CSCF judges that according to the called number that call request message carries called home network is the still SIP net except that IMS of IMS, PSTN, if IMS, execution in step 204; If PSTN, execution in step 207; If the operator of SIP net except that IMS and called ownership SIP net is identical with the operator of caller ownership IMS net, execution in step 211.
Step 204:S-CSCF judges according to the called number that call request message carries whether the operator of called ownership IMS net is identical with the operator of caller ownership IMS net, if, execution in step 205; Otherwise, execution in step 206.
Step 205:S-CSCF is transmitted to the I-CSCF of calling and called ownership IMS net with call request, after I-CSCF receives call request, the S-CSCF of call request by called ownership is transmitted to called, and this flow process finishes.
Step 206:S-CSCF is transmitted to the I-CSCF of called ownership IMS net with call request, after I-CSCF receives call request, the S-CSCF of call request by called ownership is transmitted to called, and this flow process finishes.
In this step, because I-CSCF has preserved the corresponding relation of the S-CSCF of called and called ownership, therefore, by the called number that call request message carries, I-CSCF just can learn the S-CSCF of called ownership.
Step 207:S-CSCF is transmitted to call request the BGCF of caller ownership IMS net.
After step 208:BGCF receives call request,, judge whether the operator of called ownership PSTN is identical with the operator of caller ownership IMS net according to the called number that call request message carries, if, execution in step 209; Otherwise, execution in step 210.
Step 209:BGCF nets call request by calling and called ownership IMS MGCF is transmitted to called, and this flow process finishes.
Step 210:BGCF is transmitted to the BGCF of called ownership IMS net with call request, after the BGCF of called ownership IMS net receives call request, the MGCF of call request by called ownership IMS net is transmitted to called, and this flow process finishes.
Step 211:S-CSCF is transmitted to the gateway that called ownership SIP nets with call request, after this gateway is received call request, call request is transmitted to called.
By as can be seen above-mentioned, prior art has provided the implementation of IMS bridge joint when caller is IMS user, and for other situation, for example: when being PSTN user, caller realizes then not providing solution by the IMS bridge joint.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method of the IMS of realization bridge joint, and the IMS bridge joint when realizing that PSTN user is as caller enlarges the range of application of IMS bridge joint.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method that realizes IP Multimedia System IMS bridge joint, this method comprises:
A, common exchanging telephone network PSTN user are to the MGCF MGCF request of making a call of self home-operator, after MGCF receives call request, this call request is transmitted to query call conversation control function I-CSCF, and described call request message carries the calling and called number;
After B, I-CSCF receive call request,, determine the type and the operator of calling and called home network according to the calling and called number that this call request message carries;
C, I-CSCF are according to the type and the operator of calling and called home network, and be called with forwarding to before the call request.
Described step C specifically comprises:
C1, I-CSCF judge that called home network is the still Session initiation protocol SIP net except that the IMS net of IMS net, PSTN, if the IMS net, execution in step C2; If PSTN, execution in step C3; If the SIP net except that the IMS net, execution in step C4;
C2, I-CSCF judge whether the operator of called ownership IMS net is identical with the operator of caller ownership PSTN, if the service call conversation control function S-CSCF of I-CSCF by called ownership is transmitted to call request called, the end of this flow process; Otherwise I-CSCF is transmitted to the I-CSCF of called ownership IMS net with call request, and after I-CSCF received call request, the S-CSCF by called ownership was transmitted to call request called, and this flow process finishes;
C3, I-CSCF are transmitted to call request the Breakout Gateway Control Function BGCF of caller ownership IMS net, after BGCF receives call request, whether the operator of judging called ownership PSTN is identical with the operator of caller ownership PSTN, if, the MGCF that BGCF nets by calling and called ownership IMS is transmitted to call request called, and this flow process finishes; Otherwise BGCF is transmitted to the BGCF of called ownership IMS net with call request, after the BGCF of called ownership IMS net receives call request, the MGCF of call request by called ownership IMS net is transmitted to called, and this flow process finishes;
The called number that C4, I-CSCF carry according to call request message, the operator of judging called ownership SIP net is identical with the operator of caller ownership PSTN, then call request is transmitted to the gateway of called ownership SIP net, after this gateway is received call request, call request is transmitted to called.
Described I-CSCF preserves the type of calling and called number and calling and called home network and the corresponding relation of operator;
Described step B specifically comprises:
The calling and called number that I-CSCF carries according to call request message in the corresponding relation of the type of described calling and called number and calling and called home network and operator, finds the calling and called home network type and the operator of calling and called number correspondence.
The calling and called number that described I-CSCF preserves and the type of calling and called home network and the corresponding relation of operator are: the calling and called number that defines in the telephone number shadowing agreement and the type of calling and called home network and the corresponding relation of operator.
Compared with prior art, after method provided by the present invention is received the call request that the MGCF of PSTN user by the IMS net of self home-operator initiate by I-CSCF, the calling and called number that carries according to call request message, learn the type of calling and called home network and the operator of calling and called home network, type and operator according to the calling and called home network, I-CSCF forwards to before with call request called, realize the IMS bridge joint when caller is PSTN user, enlarged the range of application of IMS bridge joint.
Description of drawings
Fig. 1 is an IMS bridge joint schematic diagram;
Fig. 2 is the flow chart of the IMS bridge joint when the realization caller is IMS user in the prior art;
Fig. 3 is the flow chart of realization IMS bridge joint provided by the invention;
Fig. 4 is the flow chart of the specific embodiment of realization IMS bridge joint provided by the invention.
Embodiment
Core concept of the present invention is: the MGCF of PSTN user by the IMS net of self home-operator is to the I-CSCF request of making a call, after I-CSCF receives call request, the calling and called number that carries according to call request message, learn the type of calling and called home network and the operator of caller home network, according to the type and the operator of calling and called home network, I-CSCF forwards to before with call request called.
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Fig. 3 is the flow chart of realization IMS bridge joint provided by the invention, and as shown in Figure 3, its concrete steps are as follows:
The MGCF of step 301:PSTN user by the IMS net of self home-operator is to the I-CSCF request of making a call, and this call request message carries the calling and called number.
After step 302:I-CSCF receives call request,, learn the type of caller home network and the operator of caller home network according to the calling number that call request message carries; The called number that carries according to call request message is learnt the type of called home network and the operator of called home network simultaneously.
Here, I-CSCF preserves the type of calling and called number and calling and called home network and the corresponding relation of operator.Particularly, the calling and called number that call request message carries is with telephone number mapping (ENUM, Telephone Number Mapping) form of the E.164 number that defines in the agreement is represented, and I-CSCF supports ENUM protocol, then I-CSCF can determine the type and the operator of the calling and called home network of calling and called number correspondence according to the type of E.164 number that defines in the ENUM protocol and calling and called home network and the corresponding relation of operator.
Step 303:I-CSCF is according to the type of calling and called home network and the operator of calling and called home network, and is called with forwarding to before the call request.
Fig. 4 is the flow chart of the specific embodiment of realization IMS bridge joint provided by the invention, and as shown in Figure 4, its concrete steps comprise:
Step 401:PSTN user is to the MGCF request of making a call of the IMS of self home-operator net, and this call request message carries the calling and called number.
After step 402:MGCF receives call request, transmit this call request to I-CSCF.
Step 403:I-CSCF receives call request, according to the calling number that this call request message carries, determines the type and the operator of caller home network.
Step 404:I-CSCF judges that according to the called number that call request message carries called home network is the still SIP net except that IMS of IMS, PSTN, if IMS, execution in step 405; If PSTN, execution in step 408; If the SIP net except that IMS, execution in step 412.
Step 405:I-CSCF judges according to the called number that call request message carries whether the operator of called ownership IMS net is identical with the operator of caller ownership PSTN, if, execution in step 406; Otherwise, execution in step 407.
The S-CSCF of step 406:I-CSCF by called ownership is transmitted to call request called, and this flow process finishes.
Step 407:I-CSCF is transmitted to the I-CSCF of called ownership IMS net with call request, after I-CSCF receives call request, the S-CSCF of call request by called ownership is transmitted to called, and this flow process finishes.
Step 408:I-CSCF is transmitted to call request the BGCF of caller ownership IMS net.
After step 409:BGCF receives call request, judge whether the operator of called ownership PSTN is identical with the operator of caller ownership PSTN, if, execution in step 410; Otherwise, execution in step 411.
The MGCF that step 410:BGCF nets by calling and called ownership IMS is transmitted to call request called, and this flow process finishes.
Step 411:BGCF is transmitted to the BGCF of called ownership IMS net with call request, after the BGCF of called ownership IMS net receives call request, the MGCF of call request by called ownership IMS net is transmitted to called, and this flow process finishes.
The called number that step 412:I-CSCF carries according to call request message, the operator of judging called ownership SIP net is identical with the operator of caller ownership PSTN, then call request is transmitted to the gateway of called ownership SIP net, after this gateway is received call request, call request is transmitted to called.
The above only is process of the present invention and method embodiment, in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is not equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1, a kind of method that realizes IP Multimedia System IMS bridge joint is characterized in that, this method comprises:
A, common exchanging telephone network PSTN user are to the MGCF MGCF request of making a call of self home-operator, after MGCF receives call request, this call request is transmitted to query call conversation control function I-CSCF, and described call request message carries the calling and called number;
After B, I-CSCF receive call request,, determine the type and the operator of calling and called home network according to the calling and called number that this call request message carries;
C, I-CSCF are according to the type and the operator of calling and called home network, and be called with forwarding to before the call request.
2, the method for claim 1 is characterized in that, described step C specifically comprises:
C1, I-CSCF judge that called home network is the still Session initiation protocol SIP net except that the IMS net of IMS net, PSTN, if the IMS net, execution in step C2; If PSTN, execution in step C3; If the SIP net except that the IMS net, execution in step C4;
C2, I-CSCF judge whether the operator of called ownership IMS net is identical with the operator of caller ownership PSTN, if the service call conversation control function S-CSCF of I-CSCF by called ownership is transmitted to call request called, the end of this flow process; Otherwise I-CSCF is transmitted to the I-CSCF of called ownership IMS net with call request, and after I-CSCF received call request, the S-CSCF by called ownership was transmitted to call request called, and this flow process finishes;
C3, I-CSCF are transmitted to call request the Breakout Gateway Control Function BGCF of caller ownership IMS net, after BGCF receives call request, whether the operator of judging called ownership PSTN is identical with the operator of caller ownership PSTN, if, the MGCF that BGCF nets by calling and called ownership IMS is transmitted to call request called, and this flow process finishes; Otherwise BGCF is transmitted to the BGCF of called ownership IMS net with call request, after the BGCF of called ownership IMS net receives call request, the MGCF of call request by called ownership IMS net is transmitted to called, and this flow process finishes;
The called number that C4, I-CSCF carry according to call request message, the operator of judging called ownership SIP net is identical with the operator of caller ownership PSTN, then call request is transmitted to the gateway of called ownership SIP net, after this gateway is received call request, call request is transmitted to called.
3, the method for claim 1 is characterized in that, described I-CSCF preserves the type of calling and called number and calling and called home network and the corresponding relation of operator;
Described step B specifically comprises:
The calling and called number that I-CSCF carries according to call request message in the corresponding relation of the type of described calling and called number and calling and called home network and operator, finds the calling and called home network type and the operator of calling and called number correspondence.
4, method as claimed in claim 3, it is characterized in that the calling and called number that described I-CSCF preserves and the type of calling and called home network and the corresponding relation of operator are: the calling and called number that defines in the telephone number shadowing agreement and the type of calling and called home network and the corresponding relation of operator.
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| WO2009015536A1 (en) * | 2007-07-27 | 2009-02-05 | Zte Corporation | A method for realizing user decision user busy forwarding |
| CN101102614B (en) * | 2007-08-03 | 2011-06-22 | 中兴通讯股份有限公司 | Method for implementing call forwarding on busy in IMS centrally controlled service |
| CN101330746B (en) * | 2007-07-18 | 2011-07-13 | 中兴通讯股份有限公司 | Method and system for implementing call deflection of IMS central control business |
| CN101127958B (en) * | 2007-09-25 | 2011-07-13 | 中兴通讯股份有限公司 | Method for forward call in central control service of IP multimedia sub-system |
| CN101137097B (en) * | 2007-09-28 | 2011-07-20 | 中兴通讯股份有限公司 | Call late forwarding method in IP multimedia subsystem centralized service |
| CN101127957B (en) * | 2007-09-25 | 2011-08-24 | 中兴通讯股份有限公司 | Method for terminal user to forward call |
| CN101102604B (en) * | 2007-08-01 | 2011-11-30 | 中兴通讯股份有限公司 | Method for user shutdown and forward in centrally controlled service of IP multimedia subsystem |
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| CN104796999A (en) * | 2014-01-17 | 2015-07-22 | 中国移动通信集团河北有限公司 | Calling service realization method and system |
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| CN101330746B (en) * | 2007-07-18 | 2011-07-13 | 中兴通讯股份有限公司 | Method and system for implementing call deflection of IMS central control business |
| US8363645B2 (en) | 2007-07-27 | 2013-01-29 | Zte Corporation | Method for realizing user decision user busy forwarding |
| WO2009015536A1 (en) * | 2007-07-27 | 2009-02-05 | Zte Corporation | A method for realizing user decision user busy forwarding |
| CN101102604B (en) * | 2007-08-01 | 2011-11-30 | 中兴通讯股份有限公司 | Method for user shutdown and forward in centrally controlled service of IP multimedia subsystem |
| CN101102614B (en) * | 2007-08-03 | 2011-06-22 | 中兴通讯股份有限公司 | Method for implementing call forwarding on busy in IMS centrally controlled service |
| CN101127958B (en) * | 2007-09-25 | 2011-07-13 | 中兴通讯股份有限公司 | Method for forward call in central control service of IP multimedia sub-system |
| CN101127957B (en) * | 2007-09-25 | 2011-08-24 | 中兴通讯股份有限公司 | Method for terminal user to forward call |
| CN101137097B (en) * | 2007-09-28 | 2011-07-20 | 中兴通讯股份有限公司 | Call late forwarding method in IP multimedia subsystem centralized service |
| CN103828320A (en) * | 2011-09-30 | 2014-05-28 | 瑞典爱立信有限公司 | Suppressing camel service invocation for diverting users |
| CN103828320B (en) * | 2011-09-30 | 2017-03-15 | 瑞典爱立信有限公司 | For setting up the method and system of the new traffic branch of the communication session in IP Multimedia System IMS network |
| CN103259730A (en) * | 2012-02-15 | 2013-08-21 | 中国移动通信集团公司 | Method, system and domain name system server for intercommunication between different networks |
| CN103259730B (en) * | 2012-02-15 | 2017-01-25 | 中国移动通信集团公司 | Method, system and domain name system server for intercommunication between different networks |
| WO2013120387A1 (en) * | 2012-02-15 | 2013-08-22 | 中国移动通信集团公司 | Method, system and domain name system server for intercommunication between different networks |
| CN104796999A (en) * | 2014-01-17 | 2015-07-22 | 中国移动通信集团河北有限公司 | Calling service realization method and system |
| CN104796999B (en) * | 2014-01-17 | 2018-12-04 | 中国移动通信集团河北有限公司 | A kind of realization method and system of call business |
| TWI819211B (en) * | 2020-04-14 | 2023-10-21 | 陳永濬 | Interface system of IP multimedia subsystem |
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