CN102291379B - Meeting method for building up based on back-to-back user agent and system - Google Patents
Meeting method for building up based on back-to-back user agent and system Download PDFInfo
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- CN102291379B CN102291379B CN201010212130.3A CN201010212130A CN102291379B CN 102291379 B CN102291379 B CN 102291379B CN 201010212130 A CN201010212130 A CN 201010212130A CN 102291379 B CN102291379 B CN 102291379B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1069—Session establishment or de-establishment
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/40—Support for services or applications
- H04L65/403—Arrangements for multi-party communication, e.g. for conferences
Abstract
The invention discloses a kind of meeting method for building up based on back-to-back user agent, including: receive the initial request of dialogue as the AS performing B2BUA behavior after, revise the initial filter criteria of the initiator user of described initial request；When service call session control function entity S-CSCF receives the subsequent request message meeting amended initial filter criteria, trigger the AS of described execution B2BUA behavior.The present invention discloses a kind of meeting based on back-to-back user agent and set up system, include AS, HSS and S-CSCF；Described system includes revising unit, is arranged at as in AS and S-CSCF performing B2BUA behavior, for revising the initial filter criteria of the initiator user of described initial request；Trigger element, is arranged in described S-CSCF, for triggering the AS of described execution B2BUA behavior.The present invention, after setting up the AS performing B2BUA behavior, still ensures that the correct access that user asks.
Description
Technical field
The present invention relates to meeting establishing techniques, particularly relate to one and be applied to IP Multimedia System (IMS, IPMultimediaSubsystem) the meeting method for building up based on back-to-back user agent (B2BUA, BacktoBackUserAgent) in and system.
Background technology
Third generation partner program (3GPP, 3rdGenerationPartnerProject) define application server (AS, ApplicationServer) Session initiation Protocol (SIP is being processed, SessionInitiationProtocol) during message, behavioral pattern can be agency (Proxy), route back-to-back user agent (RouteingB2BUA, RouteingBacktoBackUserAgent) or initial back-to-back user agent (InitiatingB2BUA).When AS uses RouteingB2BUA or InitiatingB2BUA behavioral pattern, the session identification (DialogID) of AS both sides is revised via AS, and the DialogID of AS both sides will be different.
Fig. 1 is the schematic diagram that AS performs B2BUA behavior, as it is shown in figure 1, for the request of dialogue 1, B2BUA-1, owing to performing B2BUA behavior, uses new dialogue 2 to forward request；Idiographic flow is as follows:
Step 101, UE-A initiates call request, wherein, carries dialog information and can talk with 1 in call request；
Step 102, after service call session control function entity (S-CSCF, ServingCallSessionControlFunction) receives this call request, according to the signing rule of user UE-A, sets out this call request to B2BUA-1；
Step 103, owing to this B2BUA-1 makees the function of B2BUA, after it receives call request, is replaced dialogue 1 information in this request, as replaced to talk with 2, and forwards it to S-CCSF；
Step 104, this call request, according to the signing rule of user, also may can be set out to other AS, eventually arrive at UE-B called subscriber by S-CSCF；
Step 105, the dialog information in the called call request now received be exactly talk with 2 information, and reply 200OK response；
Step 106, after S-CSCF receives this 200OK response, triggers this response message to B2BUA-1 again；
Step 107, B2BUA-1 is according to talking with the relation of conversion before, and the dialog information in the 200OK response that will receive is converted into the information of dialogue 1, and is transmitted to S-CSCF；
Step 108, converted 200OK response is transmitted to UE-A by S-CSCF again.
Again it will be seen that the dialogue faced by UE-A is dialogue 1 during this, and the dialogue faced by UE-B is dialogue 2, and its associate management is responsible for by B2BUA-1；
Foundation about meeting in the prior art has various ways, one of which scene to be to be added the user in convention business by conference applications server.Fig. 2 is the flow chart that existing convention business is set up, as in figure 2 it is shown, wherein UE-A and UE-B first establishes a session, then UE-A resettles a convention business, wishing to add UE-B in the convention business of foundation and realize call in many ways, its normal process is as follows:
Step 201, UE-A has initiated to call for asking；
Step 202, is risen this by proxy call conversation control function entity (P-CSCF, ProxyCallSessionControlFunction) and calls for asking on the S-CSCF being sent to as UE-A service；
Step 203, this is risen to call for asking and is sent to called subscriber UE-B by S-CSCF；
Step 204～step 206, UE-B sends 200OK response and is properly termed as talking with 1 to UE-A, the dialogue now set up between UE-A and UE-B；
Step 207, UE-A is desired with MPTY, and then initiating conference sets up request to meeting AS；
Step 208～step 209, be sent to meeting AS by P-CSCF, S-CSCF by this meeting request of setting up；
Step 210～step 212, meeting AS receives the meeting of UE-A and sets up, and returns 200OK response, the dialogue 2 now set up between UE-A and meeting AS to UE-A；
Step 213～step 215, now UE-A wishes to add UE-B in the convention business just set up, and substitute the dialogue between original UE-A and UE-B, UE-A sends transfer (REFER) request to meeting AS, wherein carrying a Replaces header field or parameter, its value is the information of dialogue 1；
Step 216～step 217, after meeting AS receives this transfer request, send a new call request to called subscriber UE-B, the most also carry a Replaces header field or parameter, and its value is the information of dialogue 1；
Step 218, after UE-B receives this call request, first finds dialogue 1 information on UE-B, determines that this new calling is intended to substitute the dialogue 1 of original foundation；
Step 219～step 220, after UE-B agrees to this request, send 200OK response to meeting AS；
Step 221～step 223, UE-B sends, to UE-A, the dialogue 1 that request end is original simultaneously；
Step 224～step 226, UE-A sends 200OK, accepts the end of dialogue 1.
Now dialogue 1 has just been replaced in convention business, but there is the situation of B2BUA during not accounting for session establishment during superincumbent, due in the network of existing IMS, have a lot of AS can participate in the session of user to service for user, so having the appearance of B2BUA during session establishment is the most common situation.
Fig. 3 is the flow chart having B2BUA during existing convention business is set up, and during as it is shown on figure 3, B2BUA occur during the meeting shown in Fig. 2 is set up, concrete handling process is as follows:
Step 301～step 302, user initiates one and calls for asking, identical with the step 201 shown in Fig. 2～step 202；
Step 303, this, according to the signing rule of user, is risen and calls for asking triggering to B2BUA-1 by S-CSCF；
Step 304, owing to B2BUA-1 is to work as back-to-back user agent, therefore, dialogue 1 information calling for asking is replaced to talk with A and relays to UE-B by B2BUA-1；
Step 305, UE-B replys 200OK response, and the dialog information now set up on UE-B is dialogue 2；
Step 306～step 308, the 200OK of UE-B is transmitted to UE-A by B2BUA-1, and dialogue A is converted into the information of dialogue 1 the most again, and now set up on UE-A is dialogue 1；
Step 309～step 319, be the process of meeting foundation, and it is identical with the step 207 shown in Fig. 2～step 217 that process is set up in this meeting；
Step 320, after UE-B receives the call request that meeting AS sends, 1 makes a look up dialogue, owing to have passed through B2BUA-1 during talking with the foundation of 1 before, so the information of not dialogue 1 on UE-B；
Step 321, owing to can not find the information of dialogue 1, UE-B can refuse the call request that meeting AS sends over, so that this adding procedure failure.
Obviously, when having B2BUA to participate in during convention business is set up, if still using existing call flow, it will cause the failure that calling is added.
Summary of the invention
In view of this, present invention is primarily targeted at a kind of meeting method for building up based on back-to-back user agent of offer and system, can be in the call flow that there is back-to-back user agent, when initiating call request, carry out exactly resolving and initiate calling.
For reaching above-mentioned purpose, the technical scheme is that and be achieved in that:
A kind of meeting method for building up based on back-to-back user agent, including:
Receive the initial request of dialogue as the AS performing B2BUA behavior after, revise the initial filter criteria of the initiator user of described initial request；
When S-CSCF receives the subsequent request message meeting amended initial filter criteria, trigger the AS of described execution B2BUA behavior.
Preferably, amended initial filter criteria is:
S-CSCF for described initiator user, upon receipt continuous request message carries alternative parameter or replaces header field, and the value of alternative parameter or replacement header field is the dialogue set up, recipient user in described subsequent request message by foundation dialogue recipient user, for described subsequent request message trigger described execution B2BUA behavior AS.
Preferably, the AS and described S-CSCF of described execution B2BUA behavior is AS and S-CSCF of described initiator user；
Revise the initial filter criteria of described initiator user particularly as follows: by the AS of described execution B2BUA behavior to the amendment of initial filter criteria in home subscriber server HSS；
Described method also includes: after HSS amendment initial filter criteria, notify that the S-CSCF of described initiator user revises the initial filter criteria of described initiator user.
Preferably, described subsequent request message is described initiator user or the subsequent request message of described recipient user；Described subsequent request message asks message for inviting INVITE request message or transfer REFER.
Preferably, described method also includes:
Amended initial filter criteria is positioned over the head of the queue of initial filter criteria trigger sequence.
Preferably, the described AS triggering described execution B2BUA behavior for described subsequent request message, for:
After the S-CSCF of described initiator user receives described subsequent request message, judge when described subsequent request message meets described amended initial filter criteria, described subsequent request message is sent to the AS of described execution B2BUA behavior, and the alternative parameter in described subsequent request message or replacement header field are replaced by the AS triggering described execution B2BUA behavior；
Described method also includes:
Described subsequent request message after the AS of described execution B2BUA behavior will replace is sent to the S-CSCF of described initiator user；The S-CSCF of described initiator user initiates to initiate call request to described recipient user for the described subsequent request message after replacing.
Preferably, the described AS triggering described execution B2BUA behavior for described subsequent request message, for:
After the S-CSCF of described initiator user receives described subsequent request message, sending described subsequent request message to meeting AS, meeting AS sends call request to the S-CSCF of described initiator user；Described call request carries the alternative parameter of described subsequent request message or replaces header field；
The S-CSCF of described initiator user judges when the call request from meeting AS received meets described amended initial filter criteria, the call request received is sent to described B2BUA, and the alternative parameter in described subsequent request message or replacement header field are replaced by the AS triggering described execution B2BUA behavior；
Described method also includes:
Described subsequent request message after the AS of described execution B2BUA behavior will replace is sent to the S-CSCF of described initiator user；The S-CSCF of described initiator user initiates to initiate call request to described recipient user for the described subsequent request message after replacing.
System is set up in a kind of meeting based on back-to-back user agent, includes AS, HSS and S-CSCF；Described system includes revising unit and trigger element；Wherein,
Amendment unit, is arranged at as in AS and S-CSCF performing B2BUA behavior, for, after the initial request receiving dialogue, revising the initial filter criteria of the initiator user of described initial request；
Trigger element, is arranged in S-CSCF, for when receiving the subsequent request message meeting amended initial filter criteria, triggers the AS of described execution B2BUA behavior.
Preferably, amended initial filter criteria is:
S-CSCF for described initiator user, upon receipt continuous request message carries alternative parameter or replaces header field, and the value of alternative parameter or replacement header field is the dialogue set up, recipient user in described subsequent request message by foundation dialogue recipient user, for described subsequent request message trigger described execution B2BUA behavior AS.
Preferably, the AS and described S-CSCF of described execution B2BUA behavior is AS and S-CSCF of described initiator user；
Described amendment unit is additionally operable to the amendment of initial filter criteria in HSS；
After described HSS amendment initial filter criteria, notify that the S-CSCF of described initiator user revises the initial filter criteria of described initiator user further.
Preferably, described subsequent request message is described initiator user or the subsequent request message of described recipient user；Described subsequent request message is INVITE request message or REFER request message.
Preferably, described system also includes:
Placement unit, for being positioned over the head of the queue of initial filter criteria trigger sequence by amended initial filter criteria.
Preferably, the S-CSCF of described initiator user is after receiving described subsequent request message, determine whether when described subsequent request message meets described amended initial filter criteria, described subsequent request message is sent to the AS of described execution B2BUA behavior, and the alternative parameter in described subsequent request message or replacement header field are replaced by the AS triggering described execution B2BUA behavior；
The AS of described execution B2BUA behavior is additionally operable to the described subsequent request message after replacing and is sent to the S-CSCF of described initiator user；The S-CSCF of described initiator user initiates to initiate call request to described recipient user for the described subsequent request message after replacing.
Preferably, the S-CSCF of described initiator user, after receiving described subsequent request message, sends described subsequent request message to meeting AS further, and meeting AS is additionally operable to send call request to the S-CSCF of described initiator user；Described call request carries the alternative parameter of described subsequent request message or replaces header field；
The S-CSCF of described initiator user determines whether when the call request from meeting AS received meets described amended initial filter criteria, the call request received is sent to described B2BUA, and the alternative parameter in described subsequent request message or replacement header field are replaced by the AS triggering described execution B2BUA behavior；
The AS of described execution B2BUA behavior is additionally operable to the described subsequent request message after replacing and is sent to the S-CSCF of described initiator user；The S-CSCF of described initiator user initiates to initiate call request to described recipient user for the described subsequent request message after replacing.
In the present invention, after the AS of execution B2BUA behavior receives initial session request, after the initial request receiving dialogue, revise the initial filter criteria of the initiator user of described initial request；When S-CSCF receives the subsequent request message meeting amended initial filter criteria, trigger the AS of described execution B2BUA behavior.So, when the S-CSCF of recipient user receives subsequent request message, it may be judged whether meet amended initial filter criteria, and after the subsequent request message received being performed corresponding initial filter criteria when meeting, more corresponding call request is initiated.The present invention, after setting up the AS performing B2BUA behavior, still ensures that the correct foundation of the asked meeting of user.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that AS performs B2BUA behavior；
Fig. 2 is the flow chart that existing convention business is set up；
Fig. 3 is the flow chart having B2BUA during existing convention business is set up；
Fig. 4 is the flow chart of present invention meeting based on back-to-back user agent method for building up application example one；
Fig. 5 is the flow chart of present invention meeting based on back-to-back user agent method for building up application example two；
Fig. 6 is the composition structural representation that system is set up in present invention meeting based on back-to-back user agent.
Detailed description of the invention
Basic thought of the present invention is, after the AS of execution B2BUA behavior receives initial session request, after the initial request receiving dialogue, revise the initial filter criteria of the initiator user of described initial request, when S-CSCF receives the subsequent request message meeting amended initial filter criteria, trigger the AS of described execution B2BUA behavior.
For making the object, technical solutions and advantages of the present invention clearer, by the following examples and referring to the drawings, the present invention is described in more detail.
Fig. 4 is the flow chart of present invention meeting based on back-to-back user agent method for building up application example one, and as shown in Figure 4, this example meeting based on back-to-back user agent method for building up specifically includes following steps:
Step 401～step 403, session establishment process is identical with step 301 in Fig. 3～step 303, i.e. UEA has sent to S-CSCF through P-CSCF and called for asking, and S-CSCF receives and is transmitted to B2BUA-1 (performing the AS of B2BUA behavior) after this calls for asking.Therein call for asking in carry dialogue 1 mark.
Step 404, B2BUA-1 receives after having sent and calling for asking, and initiates the amendment to initial filter criteria (iFC, initialFilterCriteria) to HSS.
Step 405, the iFC of self is modified by HSS, after HSS has revised iFC, by the up-to-date iFC rule revised notice S-CSCF.Amended initial filter criteria is: for the S-CSCF of described initiator user, upon receipt continuous request message carries alternative parameter or replaces header field, and the value of alternative parameter or replacement header field is the dialogue set up, recipient user in described subsequent request message by foundation dialogue recipient user, for described subsequent request message trigger B2BUA-1.
In the present invention, for ensureing that amended initial filter criteria is performed at first, amended iFC is positioned over the head of the queue of iFC trigger sequence.
Step 406, S-CSCF is corresponding amendment iFC after receiving notice.In amended iFC with HSS, amended iFC is identical.S-CSCF sends amendment iFC to HSS and completes response.
Step 407, HSS sends to S-CSCF and confirms response.
In the present invention, B2BUA-1 after the initial request receiving dialogue to S-CSCF for described initial request before the recipient user of described initial request initiates call request, iFC in HSS is modified, and makes the iFC in S-CSCF revise.
Step 408～step 414, identical with step 303 to step 308, for setting up the dialogue 1 between UE-A and UE-B；
The dialog information now set up on UE-A is dialogue 1, and the dialog information of the upper foundation of UE-B is dialogue A；
Step 415～step 420, these steps are the processes that meeting is set up, and identical with step 309 in Fig. 3～step 318, now UE-A completes the foundation of convention business, and asks meeting AS to be added in convention business by UE-B；
Step 421, step 422, UE-A sends transfer (REFER) by P-CSCF to S-CSCF and asks；Above-mentioned REFER request carries alternative parameter or replaces header field.
Step 423, S-CSCF sends REFER request to meeting AS；REFER request carries alternative parameter or replaces header field；
Step 424, meeting AS sends call request to S-CSCF, carries alternative parameter or replace header field in call request；
Step 425～step 426, after S-CSCF receives the call request that meeting AS sends, mate according to new iFC rule, owing to this call request containing Replaces header field, and the callee of this calling is UE-B, then S-CSCF is according to new iFC rule, by this call request triggers to B2BUA-1；
Step 427, after B2BUA-1 receives this call request, makes a look up the information of dialogue 1, and finds its corresponding relation；
Step 428, B2BUA-1 presses the way of B2BUA, forwards this call request to S-CSCF, and is revised as the value of replaces header field talking with A；
Step 429, the call request forwarded is sent to called subscriber UE-B by S-CSCF；
Step 430, now UE-B can find dialogue A in self, and replaces dialogue A with new calling；
Step 431～step 433, UE-B sends to meeting AS and receives 200OK response；
Step 434～step 436, UE-B sends ending request to UE-A, terminates dialogue A, and wherein end dialogue A can be converted into end dialogue 1 and be sent to UE-A by B2BUA-1；UE-A returns 200OK.
Fig. 5 is the flow chart of present invention meeting based on back-to-back user agent method for building up application example two, as it is shown in figure 5, this example meeting based on back-to-back user agent method for building up specifically includes following steps:
Step 501 is to step 522, identical to step 422 with the step 401 shown in Fig. 4.
Step 523, after S-CSCF receives REFER request, mates according to new iFC rule, containing Replaces header field in asking due to this REFER, and the callee of this calling is UE-B, then S-CSCF is according to new iFC rule, triggers this REFER request to B2BUA-1；
Step 524, this REFER request is triggered to B2BUA-1 by S-CSCF；After B2BUA-1 receives this REFER request, the information of dialogue 1 is made a look up, and finds its corresponding relation；
Step 525, B2BUA-1 is pressed the way of B2BUA, is forwarded this REFER to ask to S-CSCF, and is revised as the value of replaces header field talking with A；
Step 526, S-CSCF sends REFER request to meeting AS；
Step 527, meeting AS sends call request to S-CSCF；
Step 528, S-CSCF sends call request to called subscriber UE-B, wherein carries dialogue A mark.
Step 529 is to step 535, identical with step 430 to step 436.
Fig. 4 and Fig. 5 is the explanation carried out as a example by REFER request message, it will be appreciated by those skilled in the art that above-mentioned REFER request message can also replace with INVITE request message, and the present invention no longer provides the process chart of INVITE request message.INVITE request message or REFER request message in the present invention can be initiator user or described recipient's Client-initiated request message.
System is set up in the meeting based on back-to-back user agent of the present invention, is applied in IMS, includes AS, HSS and S-CSCF etc.；Fig. 6 is the composition structural representation that system is set up in present invention meeting based on back-to-back user agent, and as shown in Figure 6, present invention meeting based on back-to-back user agent is set up system and also included revising unit 60 and trigger element 61；Wherein,
Amendment unit 60, is arranged at as in AS and S-CSCF performing B2BUA behavior, for, after the initial request receiving dialogue, revising the initial filter criteria of the initiator user of described initial request；
Trigger element 61, is arranged in described S-CSCF, for when receiving the subsequent request message meeting amended initial filter criteria, triggers the AS of described execution B2BUA behavior.
The AS and described S-CSCF of above-mentioned execution B2BUA behavior is AS and S-CSCF of described initiator user；
The AS of described execution B2BUA behavior is additionally operable to the amendment of initial filter criteria in HSS；
After described HSS amendment initial filter criteria, notify that the S-CSCF of described initiator user revises the initial filter criteria of described initiator user further；
The S-CSCF of described initiator user is additionally operable to revise the initial filter criteria of described initiator user, sets up dialogue for described initiator user and recipient user afterwards.
Above-mentioned amended initial filter criteria is:
S-CSCF for described initiator user, upon receipt continuous request message carries alternative parameter or replaces header field, and the value of alternative parameter or replacement header field is the dialogue set up, recipient user in described subsequent request message by foundation dialogue recipient user, then for described subsequent request message trigger described execution B2BUA behavior AS.
Described subsequent request message is described initiator user or the subsequent request message of described recipient user；Described subsequent request message is INVITE request message or REFER request message.
As shown in Figure 6, present invention meeting based on back-to-back user agent is set up system and is also included placement unit 62, for amended initial filter criteria is positioned over the head of the queue of initial filter criteria trigger sequence.
The AS and described S-CSCF of described execution B2BUA behavior is AS and S-CSCF of described initiator user；
Above-mentioned amendment unit 60 is additionally operable to the amendment of initial filter criteria in HSS；
After described HSS amendment initial filter criteria, notify that the S-CSCF of described initiator user revises the initial filter criteria of described initiator user further.
Above-mentioned subsequent request message is described initiator user or the subsequent request message of described recipient user；Described subsequent request message is INVITE request message or REFER request message.
The S-CSCF of above-mentioned initiator user is after receiving described subsequent request message, determine whether when described subsequent request message meets described amended initial filter criteria, described subsequent request message is sent to the AS of described execution B2BUA behavior, and the alternative parameter in described subsequent request message or replacement header field are replaced by the AS triggering described execution B2BUA behavior；
The AS of described execution B2BUA behavior is additionally operable to the described subsequent request message after replacing and is sent to the S-CSCF of described initiator user；The S-CSCF of described initiator user initiates to initiate call request to described recipient user for the described subsequent request message after replacing.
The S-CSCF of above-mentioned initiator user, after receiving described subsequent request message, sends described subsequent request message to meeting AS further, and meeting AS is additionally operable to send call request to the S-CSCF of described initiator user；Described call request carries the alternative parameter of described subsequent request message or replaces header field；
The S-CSCF of described initiator user determines whether when the call request from meeting AS received meets described amended initial filter criteria, the call request received is sent to described B2BUA, and the alternative parameter in described subsequent request message or replacement header field are replaced by the AS triggering described execution B2BUA behavior；
The AS of described execution B2BUA behavior is additionally operable to the described subsequent request message after replacing and is sent to the S-CSCF of described initiator user；The S-CSCF of described initiator user initiates to initiate call request to described recipient user for the described subsequent request message after replacing.
Skilled artisan would appreciate that, it is for realizing aforesaid meeting method for building up based on back-to-back user agent and to design that system is set up in meeting based on back-to-back user agent shown in Fig. 6 of the present invention, and the function that realizes of above-mentioned each processing unit can refer to the associated description of preceding method and understands.The function of each processing unit in figure can be realized by the program that runs on processor, it is possible to is realized by concrete logic circuit.
The above, only presently preferred embodiments of the present invention, it is not intended to limit protection scope of the present invention.
Claims (12)
1. a meeting method for building up based on back-to-back user agent, it is characterised in that described method includes:
Receive the initial request of dialogue as the application server AS performing back-to-back user agent B2BUA behavior after, revise the initial filter criteria of the initiator user of described initial request；
When service call session control function entity S-CSCF receives the subsequent request message meeting amended initial filter criteria, trigger the AS of described execution B2BUA behavior；Wherein,
Amended initial filter criteria is:
S-CSCF for described initiator user, upon receipt continuous request message carries alternative parameter or replaces header field, and the value of alternative parameter or replacement header field is the dialogue set up, and the recipient user in described subsequent request message by the recipient user of foundation dialogue time, then trigger the AS of described execution B2BUA behavior for described subsequent request message.
Method the most according to claim 1, it is characterised in that the AS and described S-CSCF of described execution B2BUA behavior are AS and S-CSCF of described initiator user；
Revise the initial filter criteria of described initiator user particularly as follows: by the AS of described execution B2BUA behavior to the amendment of initial filter criteria in home subscriber server HSS；
Described method also includes: after HSS amendment initial filter criteria, notify that the S-CSCF of described initiator user revises the initial filter criteria of described initiator user.
Method the most according to claim 2, it is characterised in that described subsequent request message is described initiator user or the subsequent request message of described recipient user；Described subsequent request message asks message for inviting INVITE request message or transfer REFER.
Method the most according to claim 3, it is characterised in that described method also includes:
Amended initial filter criteria is positioned over the head of the queue of initial filter criteria trigger sequence.
Method the most according to claim 4, it is characterised in that the described AS triggering described execution B2BUA behavior for described subsequent request message, for:
After the S-CSCF of described initiator user receives described subsequent request message, judge when described subsequent request message meets described amended initial filter criteria, described subsequent request message is sent to the AS of described execution B2BUA behavior, and the alternative parameter in described subsequent request message or replacement header field are replaced by the AS triggering described execution B2BUA behavior；
Described method also includes:
Described subsequent request message after the AS of described execution B2BUA behavior will replace is sent to the S-CSCF of described initiator user；The S-CSCF of described initiator user initiates to initiate call request to described recipient user for the described subsequent request message after replacing.
Method the most according to claim 4, it is characterised in that the described AS triggering described execution B2BUA behavior for described subsequent request message, for:
After the S-CSCF of described initiator user receives described subsequent request message, sending described subsequent request message to meeting AS, meeting AS sends call request to the S-CSCF of described initiator user；Described call request carries the alternative parameter of described subsequent request message or replaces header field；
The S-CSCF of described initiator user judges when the call request from meeting AS received meets described amended initial filter criteria, the call request received is sent to described B2BUA, and the alternative parameter in described subsequent request message or replacement header field are replaced by the AS triggering described execution B2BUA behavior；
Described method also includes:
Described subsequent request message after the AS of described execution B2BUA behavior will replace is sent to the S-CSCF of described initiator user；The S-CSCF of described initiator user initiates to initiate call request to described recipient user for the described subsequent request message after replacing.
7. a system is set up in meeting based on back-to-back user agent, includes application server AS, home subscriber server HSS and service call session control function entity S-CSCF；It is characterized in that, described system includes revising unit and trigger element；Wherein,
Amendment unit, is arranged at as in AS and S-CSCF performing B2BUA behavior, for, after the initial request receiving dialogue, revising the initial filter criteria of the initiator user of described initial request；
Trigger element, is arranged in S-CSCF, for when receiving the subsequent request message meeting amended initial filter criteria, triggers the AS of described execution B2BUA behavior；
Amended initial filter criteria is:
S-CSCF for described initiator user, upon receipt continuous request message carries alternative parameter or replaces header field, and the value of alternative parameter or replacement header field is the dialogue set up, and the recipient user in described subsequent request message by the recipient user of foundation dialogue time, then trigger the AS of described execution B2BUA behavior for described subsequent request message.
System the most according to claim 7, it is characterised in that the AS and described S-CSCF of described execution B2BUA behavior are AS and S-CSCF of described initiator user；
Described amendment unit is additionally operable to the amendment of initial filter criteria in HSS；
After described HSS amendment initial filter criteria, notify that the S-CSCF of described initiator user revises the initial filter criteria of described initiator user further.
System the most according to claim 8, it is characterised in that described subsequent request message is described initiator user or the subsequent request message of described recipient user；Described subsequent request message is INVITE request message or REFER request message.
System the most according to claim 9, it is characterised in that described system also includes:
Placement unit, for being positioned over the head of the queue of initial filter criteria trigger sequence by amended initial filter criteria.
11. systems according to claim 10, it is characterized in that, the S-CSCF of described initiator user is after receiving described subsequent request message, determine whether when described subsequent request message meets described amended initial filter criteria, described subsequent request message is sent to the AS of described execution B2BUA behavior, and the alternative parameter in described subsequent request message or replacement header field are replaced by the AS triggering described execution B2BUA behavior；
The AS of described execution B2BUA behavior is additionally operable to the described subsequent request message after replacing and is sent to the S-CSCF of described initiator user；The S-CSCF of described initiator user initiates to initiate call request to described recipient user for the described subsequent request message after replacing.
12. systems according to claim 10, it is characterized in that, the S-CSCF of described initiator user, after receiving described subsequent request message, sends described subsequent request message to meeting AS further, and meeting AS is additionally operable to send call request to the S-CSCF of described initiator user；Described call request carries the alternative parameter of described subsequent request message or replaces header field；
The S-CSCF of described initiator user determine whether to be received from the non-call request as the AS of B2BUA meet described amended initial filter criteria time, the call request received is sent to described B2BUA, and the alternative parameter in described subsequent request message or replacement header field are replaced by the AS triggering described execution B2BUA behavior；
The AS of described execution B2BUA behavior is additionally operable to the described subsequent request message after replacing and is sent to the S-CSCF of described initiator user；The S-CSCF of described initiator user initiates to initiate call request to described recipient user for the described subsequent request message after replacing.
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| CN201010212130.3A CN102291379B (en) | 2010-06-18 | 2010-06-18 | Meeting method for building up based on back-to-back user agent and system |
| PCT/CN2011/075828 WO2011157218A1 (en) | 2010-06-18 | 2011-06-16 | Conference establishment method and system based on back to back user agent |
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| CN201010212130.3A CN102291379B (en) | 2010-06-18 | 2010-06-18 | Meeting method for building up based on back-to-back user agent and system |
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| CN102291379A CN102291379A (en) | 2011-12-21 |
| CN102291379B true CN102291379B (en) | 2016-08-03 |
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| CN101051993A (en) * | 2006-04-04 | 2007-10-10 | 华为技术有限公司 | Method for substituting conversation mark conversation replacing method using said conversation mark substitution |
| CN101166105A (en) * | 2007-08-28 | 2008-04-23 | 中兴通讯股份有限公司 | Online user invitation method for conference service |
| CN101404822A (en) * | 2007-09-30 | 2009-04-08 | 华为技术有限公司 | Conversation transfer method, system and equipment |
| CN102006272A (en) * | 2010-04-30 | 2011-04-06 | 中兴通讯股份有限公司 | Method and system of application server (AS) for replacing Replace parameter |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7995560B2 (en) * | 2006-08-02 | 2011-08-09 | Siemens Enterprise Communications, Inc. | Telecommunications system and method of session initiation protocol (SIP) based communications between endpoints |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051993A (en) * | 2006-04-04 | 2007-10-10 | 华为技术有限公司 | Method for substituting conversation mark conversation replacing method using said conversation mark substitution |
| CN101166105A (en) * | 2007-08-28 | 2008-04-23 | 中兴通讯股份有限公司 | Online user invitation method for conference service |
| CN101404822A (en) * | 2007-09-30 | 2009-04-08 | 华为技术有限公司 | Conversation transfer method, system and equipment |
| CN102006272A (en) * | 2010-04-30 | 2011-04-06 | 中兴通讯股份有限公司 | Method and system of application server (AS) for replacing Replace parameter |
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