CN101610270B - Signaling terminating method and signaling terminating gateway - Google Patents
Signaling terminating method and signaling terminating gateway Download PDFInfo
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- CN101610270B CN101610270B CN200910162556XA CN200910162556A CN101610270B CN 101610270 B CN101610270 B CN 101610270B CN 200910162556X A CN200910162556X A CN 200910162556XA CN 200910162556 A CN200910162556 A CN 200910162556A CN 101610270 B CN101610270 B CN 101610270B
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Abstract
The invention discloses a signaling terminating method which is applied to a multimedia communication network system comprising an objective terminal, a source terminal, a signaling control server and a signaling terminating gateway. In the signaling terminating method, the signaling terminating gateway is used for selectively terminating signaling from the source terminal, and the signaling is not transmitted to the objective terminal, thus reducing the signaling load of the objective terminal, and improving the reusability of media resources under the premise of not affecting system architecture. The invention also discloses a signaling terminating gateway applying the signaling terminating method.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of signaling terminating method and signaling terminating gateway.
Background technology
Along with the development of multimedia communication technology, in the plurality of applications scene, need set up the connection between purpose terminal and the source terminal, for example, decoder need connect with encoder, to obtain the video flowing on this encoder.When purpose terminal and source terminal connect, can realize both sides' communication through variety of protocol, agreement commonly used comprises SIP (Session Initiation Protocol, Session initiation Protocol) and agreement H.323.Wherein, the basic function of SIP comprises to be set up session INVITE and discharges session BYE etc., and H.323 the basic function of the control session of protocol definition comprises that setting up session Setup, ring Alerting, session sets up successful Connect and remove session Release etc.
In the prior art; General through signaling control server connection purpose terminal and source terminal; This signaling control server is used to control the session between purpose terminal and the source terminal; Safeguard the state machine of a cover protocol compliant, parsing, coding and the forwarding of being responsible for signaling are mutual, realize the control to the protocol level of interactive function.
Source terminal need be when purpose terminal request Media Stream; Can send to the purpose terminal through the signaling control server and set up conversation request; After the purpose terminal receives and sets up conversation request; Can set up session with source terminal, and Media Stream sent to the source terminal of setting up session through a circulation center.When source terminal need withdraw from being connected of purpose terminal, can send to the purpose terminal through the signaling control server and discharge conversation request, flow port is closed after receiving and discharging conversation request in the purpose terminal, no longer sends Media Stream to source terminal.
In present multimedia communications system, the multiple source terminal need with same purpose terminal communication, for example, 10000 monitors need the real-time video of same camera collections.The multiple source terminal is sent to same purpose terminal and is set up conversation request, sets up the multichannel dialogue through signaling control server and purpose terminal, and sends out the center through circulation and obtain the Media Stream from the purpose terminal simultaneously.
The inventor finds that there is following defective at least in prior art in realizing process of the present invention:
The configuration at terminal is generally all lower, in session and the process that discharges session are set up in purpose terminal and multiple source terminal, needs processing signaling continually, takies a large amount of internal memories and resource, thereby can cause the decline of the service behaviour of self.
Simultaneously, because the supported session way in purpose terminal is limited, after the session way of having set up reaches limit value, new session can't be set up with new source terminal in the purpose terminal.Therefore for example: an encoder maximum can be supported 4 tunnel sessions, can set up 4 tunnel sessions at most, when the conversation request that surpasses 4 tunnel, and then this conversation request failure.
Summary of the invention
The invention provides a kind of signaling terminating method and signaling terminating gateway, be used to alleviate the signaling traffic load at purpose terminal.
The invention provides a kind of signaling terminating method, be applied to comprise in the multimedia communication network system of purpose terminal, source terminal, signaling control server and signaling terminating gateway,
Said method comprising the steps of:
When said signaling terminating gateway receives when setting up request from the session of said source terminal, said signaling terminating gateway judges whether the record of said session connection list item is empty; If said session connection list item be recorded as sky, said signaling terminating gateway is transmitted said session to said purpose terminal and is set up request; If the record of said session connection list item is not empty, said signaling terminating gateway directly returns session to said source terminal and sets up response message;
When said signaling terminating gateway receives when discharging request from the session of said source terminal, said signaling terminating gateway judges whether said session discharges the corresponding session of request is the termination session; If judged result is for being, said signaling terminating gateway directly returns session to said source terminal and discharges response message; If judged result is for denying; Transmit said session to said purpose terminal when there is not the termination session in said signaling terminating gateway in said session connection list item and discharge request; When in said session connection list item, having the termination session; From said session connection list item, select the termination session according to predefined strategy, and the termination session of said selection is set to initial session, then returns original initial session and discharge response message to said source terminal.
Preferably, before said signaling terminating gateway received the session foundation request from source terminal, it be purpose terminal configuration session connection list item that said signaling terminating gateway also needs the needs according to reality.
Preferably, information and the purpose terminal information that comprises said source terminal in the request set up in said session,
Said signaling terminating gateway directly returns after session sets up response message to said source terminal, also comprises:
Said signaling terminating gateway is set up the session between said source terminal and the said purpose terminal, and said session of having set up is added in the said session connection list item.
Preferably, said session discharges information and the purpose terminal information that comprises said source terminal in the request,
Said signaling terminating gateway directly after said source terminal returns session release response message, also comprises:
Said signaling terminating gateway discharges the session between said source terminal and the said purpose terminal, and said session is deleted from said session connection list item, and perhaps the session tokens with said release is " X ".
Preferably, said session connection list item comprises that there are mark in source terminal information, purpose end message, terminal label and record.
The present invention also provides a kind of signaling terminating gateway, is applied to comprise in the network system of the multimedia communication that purpose terminal, source terminal, signaling control server and signaling terminating gateway are formed,
Said signaling terminating gateway comprises configuration module, transceiver module, processing module and logging modle, wherein,
Said configuration module is used for according to actual needs and predetermined policy configurations session connection list item;
Said transceiver module; Electrically connect with said processing module; Request is set up in the session that is used to receive from said source terminal; Whether according to said session connection list item be sky, when said session connection list item is sky, transmit said session to said purpose terminal and set up request if triggering said processing module, when said session connection list item is not sky, directly return session to said source terminal and set up response message; Reception discharges request from the session of said source terminal; Trigger said processing module and judge whether said session discharges the corresponding session of request is the termination session; When said session discharges the corresponding session of request for the termination session, directly return session and discharge response message to said source terminal; To discharge the corresponding session of request be not the termination session and transmit said session to said purpose terminal when in said session connection list item, not having the termination session and discharge request in said session, and to discharge the corresponding session of request be not the termination session and directly return session to said source terminal when in said session connection list item, having the termination session and discharge response message in said session.
Said processing module; Electrically connect with said configuration module; Be used for after said transceiver module receives the session foundation request from said source terminal; Whether the record according to the session connection list item of said logging modle is empty; Said session connection list item be recorded as sky the time trigger said processing module and transmit said session to said purpose terminal and set up request, do not trigger said processing module when empty at the record of said session connection list item and directly return session through transceiver module and set up response response message to said source terminal; After said transceiver module receives the session release request from said source terminal; Whether discharge the corresponding session of request according to said session is the termination session; When the corresponding session of said session release request is the termination session, trigger said processing module and directly return session release response response message to said source terminal through transceiver module; Discharging the corresponding session of request in said session is not the termination session; And trigger said processing module when in said session connection list item, not having the termination session and transmit said session release request to said purpose terminal; Discharging the corresponding session of request in said session is not termination session and when in said session connection list item, having the termination session; Trigger said processing module and from said session connection list item, select the termination session, and the termination session of said selection is set to initial session, and return original initial session to said source terminal and discharge response response message according to predefined strategy;
Said logging modle electrically connects with said processing module, is used for setting up according to said processing module the situation of session, the corresponding session information of session of the said foundation of storage in said session connection list item; According to the situation of said processing module release session, the corresponding session information of session of the said release of deletion from said session connection list item, perhaps the session tokens with said release is " X ".
Preferably, information and the purpose terminal information that comprises said source terminal in the response message set up in said session,
Said transceiver module also is used for returning said session to said signaling control server and sets up response message, makes said signaling control server send Media Stream according to the information and the purpose terminal information notification streams retransmission center of said source terminal to said source terminal.
Preferably, said session discharges information and the purpose terminal information that comprises said source terminal in the response message,
Said transceiver module; Also be used for returning said session and discharge response message, make said signaling control server stop to send Media Stream to said source terminal according to the information and the purpose terminal information notification streams retransmission center of said source terminal to said signaling control server.
Preferably, said session connection list item comprises that there are mark in source terminal information, purpose end message, terminal label and record.
Compared with prior art; The present invention has the following advantages: the present invention optionally terminates from the signaling of source terminal through the signaling terminating gateway; No longer signaling is forwarded to the purpose terminal; Reduce the signaling traffic load at purpose terminal, under the prerequisite that does not influence system architecture, improved the reusability of media resource.
Description of drawings
Fig. 1 is a signaling terminating method flow sketch map of the present invention;
Fig. 2 is the signaling terminating system configuration sketch map in the concrete application scenarios of the present invention;
Fig. 3 is that request termination flow chart is set up in the session in the concrete application scenarios of the present invention;
Fig. 4 is that the session in the concrete application scenarios of the present invention discharges request termination flow chart;
Fig. 5 is the signaling terminating gateway structural representation in the concrete application scenarios of the present invention.
Embodiment
In the technical scheme provided by the invention; Its core concept is for being provided with a signaling terminating gateway between the purpose terminal of multimedia communication network system and information Control server, after the signaling terminating gateway receives the signaling from source terminal, according to optionally the terminate forwarding of signaling of the session connection list item of self setting up; Directly return response message to source terminal; Set up or source of release terminal and purpose terminal between session, and the notification streams retransmission center begins or stops to source terminal transmission Media Stream, thereby alleviated the signaling burden at purpose terminal; Enlarged the reusability of Media Stream; And need not to improve the framework of terminal, server and original system, broken through the restriction of session way, and support the signaling of variety of protocol.
To combine the accompanying drawing among the present invention below, technical scheme of the present invention will be carried out clear, intactly description.As shown in Figure 1, be signaling terminating method flow sketch map of the present invention, be applied to comprise that this method may further comprise the steps in the multimedia communication network system of purpose terminal, source terminal, signaling control server and signaling terminating gateway:
Step 101, the signaling terminating gateway is a purpose terminal configuration session connection list item according to the needs of reality.
Particularly; The signaling terminating gateway generates a session connection list item in advance to each purpose terminal; This session connection list item is used to write down the information of each session relevant with the purpose terminal; When session was not set up with source terminal in the purpose terminal, the corresponding session connection list item in this purpose terminal was empty.
As shown in table 1, the concrete form for the session connection list item among the present invention exists comprises that there are mark in source terminal information, purpose end message, terminal label and record.Wherein, when terminal label is F (False), represent that this session is an initial session, promptly not by the session of signaling terminating gateway termination; When terminal label is T (True), represent that this session is the termination session, promptly by the session of signaling terminating gateway termination; Record exists when being labeled as " √ ", representes that this session exists; Record exists when being labeled as " X ", representes that this session does not exist, i.e. this session is released.
Table 1 session connection list item
| Source terminal | The purpose terminal | Terminal label | There is mark in record |
| SRCUA1 | DSTUA | F | √ |
| SRCUA2 | DSTUA | T | √ |
| SRCUA3 | DSTUA | T | √ |
Signaling terminating gateway among the present invention optionally terminates from the signaling of source terminal, no longer signaling is forwarded to the purpose terminal, has reduced the signaling traffic load at purpose terminal, under the prerequisite that does not influence system architecture, has improved the reusability of media resource.
As shown in Figure 2; Be the signaling terminating system configuration sketch map in the concrete application scenarios of the present invention, comprise purpose terminal D STUA 210, source terminal SRCUA1 220, source terminal SRCUA0 260, signaling control server 230, signaling terminating gateway 240 and a circulation center 250.Wherein, purpose terminal 210 is the product survivor and the sender of Media Stream, can be equipment such as encoder; Source terminal SRCUA1220 and source terminal SRCUA0260 are the requestor and the recipient of Media Stream, can be equipment such as software decoder or hardware decoder; Signaling control server 230 can be supported various signalings for being responsible for setting up the signaling control collection equipment of call between terminals relation, like SIP with H.323 wait the signaling in the agreement; Signaling terminating gateway 240 receives various signalings through signaling control server 230; And the equipment of the session connection list item between the storage terminal; And carry out signaling terminating or return the operation of response according to the content choice property of session connection list item ground, be used to improve terminal capabilities, alleviate the terminal burden.
Explain that below in conjunction with the concrete application scenarios of the present invention the request termination is set up in session of the present invention, session discharges request termination flow process.As shown in Figure 3, session is set up request termination flow process and specifically may further comprise the steps:
Particularly; Session is set up in the request and is comprised the information of source terminal SRCUA1 and the information of purpose terminal D STUA; Circulation send out the center through and the signaling control server between negotiations process, obtain the information of source terminal SRCUA1 and the information of purpose terminal D STUA, comprise facility information, port information and coding/decoding information etc.; And judge and can the Media Stream from purpose terminal D STUA be forwarded to source terminal SRCUA1; When being, return negotiation successful information to the signaling control server in judged result, the notice signaling Control Server is consulted successfully; For not the time, do not return the negotiation failure information to the signaling control server in judged result, the notice signaling Control Server is consulted failure.
Step 303, signaling terminating gateway judge whether the record of the session connection list item that generates in advance is empty.If this session connection list item be recorded as sky, then execution in step 304; If the record of this session connection list item is not empty, then execution in step 305.Wherein, the session connection list item can be kept at the form of database list item or MCB in the signaling terminating gateway.
Particularly; When the session connection list item is empty; Be that purpose terminal D STUA also sets up session with other source terminals, when the session that the signaling terminating gateway the receives request of setting up was set up request for the first session that is directed against purpose terminal D STUA, the signaling terminating gateway was forwarded to purpose terminal D STUA with this session request of setting up; Set up the session between purpose terminal D STUA and the source terminal SRCUA1; And the session of having set up added in the session connection list item, this session corresponding terminal label in the session connection list item is set to F, and initial session corresponding record in the session connection list item exists mark to be set to " √ ".As shown in table 2, be the session connection list item behind the interpolation initial session.
Table 2 adds the session connection list item behind the initial session
| Source terminal | The purpose terminal | Terminal label | There is mark in record |
| SRCUA1 | DSTUA | F | √ |
Particularly; When the record of session connection list item is not empty; When the purpose terminal D STUA that promptly this session connection list item is corresponding has set up session with other source terminals; The signaling terminating gateway no longer is transmitted to purpose terminal D STUA with the conversation request that receives, and sets up response message but directly return session to source terminal SRCUA1, and the session of setting up between source terminal SRCUA1 and the purpose terminal D STUA is added the session of having set up in the session connection list item to.
The signaling terminating gateway session corresponding terminal label in the session connection list item that terminates is set to T, and termination session corresponding record in the session connection list item exists mark to be set to " √ ".As shown in table 3, be the session connection list item after the session of interpolation termination.Wherein, source terminal SRCUA0 set up session with purpose terminal D STUA before source terminal SRCUA1, and this session is an initial session.
Table 3 adds the session connection list item after the termination session
| Source terminal | The purpose terminal | Terminal label | There is mark in record |
| SRCUA0 | DSTUA | F | √ |
| SRCUA1 | DSTUA | T | √ |
Particularly; Circulation send out the center can through and the signaling control server between negotiations process; Obtain the corresponding source terminal information of Media Stream, comprise facility information, port information and coding/decoding information, so that the Media Stream from purpose terminal D STUA that will receive is forwarded to source terminal SRCUA1.
Signaling terminating gateway among the present invention is after the session foundation request that receives from source terminal; Directly return session and set up response message to source terminal; No longer transmit session and set up request, alleviated the signaling burden at purpose terminal, under the prerequisite that does not influence original system, improved the reusability of Media Stream to the purpose terminal; And support the signaling of various protocols, comprise INVITE signaling and the Setup signaling in the agreement H.232 among the SIP.
It is as shown in Figure 4 that session discharges request termination flow process, specifically may further comprise the steps:
The session that step 401, signaling control server receive from source terminal SRCUA1 discharges request, sets up request according to this session, sends out the center with circulation and holds consultation, and after consulting successfully, this session is discharged request be forwarded to the signaling terminating gateway.
Particularly; Session is set up in the request and is comprised the information of source terminal SRCUA1 and the information of purpose terminal D STUA; Circulation send out the center through and the signaling control server between negotiations process, obtain the information of source terminal SRCUA1 and the information of purpose terminal D STUA, comprise facility information, port information and coding/decoding information etc.; And judge and can the Media Stream from purpose terminal D STUA be stopped forwarding source terminal SRCUA1; When being, return negotiation successful information to the signaling control server in judged result, the notice signaling Control Server is consulted successfully; For not the time, do not return the negotiation failure information to the signaling control server in judged result, the notice signaling Control Server is consulted failure.
Particularly; The signaling terminating gateway discharges purpose end message and source terminal information in the request according to session; Inquire about this session and discharge the terminal label of asking correspondence in the session connection list item, if corresponding terminal label is F, then the session of this session release request correspondence is an initial session; If corresponding terminal label is T, then this session discharges and asks corresponding session to be the termination session.
Particularly; Be the termination session because the session that the signaling terminating gateway receives discharges the corresponding session of request, purpose terminal D STUA did not receive from the session of source terminal SRCUA1 and sets up request when promptly this session was set up, and this session request of setting up is terminated by the signaling terminating gateway; Therefore; The signaling terminating gateway is not transmitted the session that receives to purpose terminal D STUA and is discharged request, but this session is discharged the request termination, directly returns session to source terminal SRCUA1 and discharges response message.
When the signaling terminating gateway is deleted the termination session from the session connection list item, can be directly with the corresponding record purge of session that should terminate; Also can exist mark to be set to " X " by the corresponding record of this termination session, as shown in table 4, after the session of session termination gateway release termination, the session connection list item when the corresponding record of this termination session exists mark to be set to " X ".Wherein, source terminal SRCUA0 set up session with purpose terminal D STUA before source terminal SRCUA1, and this session is an initial session.
Table 4 discharges the session connection list item after the termination session
| Source terminal | The purpose terminal | Terminal label | There is mark in record |
| SRCUA0 | DSTUA | F | √ |
| SRCUA1 | DSTUA | T | X |
Particularly, when the session that receives when the signaling terminating gateway discharged the corresponding session of request and is initial session, the signaling terminating gateway judged whether there is the termination session in the session connection list item through the corresponding terminal label of other sessions that inquiry session connects in the list item.
Particularly; If there is the termination session in the session connection list item; Then the signaling terminating gateway can be selected in the session connection list item termination session wherein according to preset rule, and the terminal label of the session correspondence that should terminate is set to F, and the session that should terminate is set to initial session.
In addition, the signaling terminating gateway can send to purpose terminal D STUA with the suggestion requests that comprises this termination session information after from the session connection list item, selecting to be set to the termination session of initial session; The purpose terminal obtains this termination session information, returns response to the signaling terminating gateway, and above-mentioned termination session information can be used for follow-up media stream service, comprises media stream real-time monitoring, Media Stream playback and Media Stream inquiry etc.; The signaling terminating gateway is carried out follow-up step after the response that receives purpose terminal D STUA.
Need to prove, execute this step after, continue execution in step 404.
Wherein, when the signaling terminating gateway is deleted initial session from the session connection list item, can also can exist mark to be set to " X " by the corresponding record of this initial session directly with the record purge of this initial session correspondence.As shown in table 5, be the session connection list item behind the deletion initial session.
Table 5 discharges the session connection list item behind the initial session
| Source terminal | The purpose terminal | Terminal label | There is mark in record |
| SRCUA1 | DSTUA | F | X |
Need to prove, execute this step after, continue execution in step 405, i.e. signaling control server and circulation sent out a center and carried out secondary and consult, and makes circulation send out a center and stops to send Media Stream to source terminal SRCUA1.The inventive method can also be adjusted each sequence of steps according to actual needs.
Signaling terminating gateway among the present invention is after the session release request that receives from source terminal; Directly return session and discharge response message to source terminal; No longer transmit session and discharge request, alleviated the signaling burden at purpose terminal, and do not influenced the framework of original system to the purpose terminal; And support the signaling of various protocols, comprise BYE signaling and the Release signaling in the agreement H.232 among the SIP.
Correspondingly, the present invention also provides the signaling terminating gateway of the signaling terminating method among a kind of the present invention of application.As shown in Figure 5; Be the signaling terminating gateway structural representation in the concrete application scenarios of the present invention; Be applied to comprise in the network system of the multimedia communication that purpose terminal, source terminal, signaling control server and signaling terminating gateway are formed; This signaling terminating gateway comprises configuration module 510, transceiver module 520, processing module 530 and logging modle 540, wherein
Wherein, Information and the purpose terminal information that comprises source terminal in the response message set up in session; Above-mentioned transceiver module 520; Also be used for returning session and set up response message, make this signaling control server send Media Stream to source terminal according to the information and the purpose terminal information notification streams retransmission center of source terminal to the signaling control server.
Session discharges information and the purpose terminal information that comprises source terminal in the response message; Above-mentioned transceiver module 520; Also be used for returning session and discharge response message, make this signaling control server stop to send Media Stream to source terminal according to the information and the purpose terminal information notification streams retransmission center of source terminal to the signaling control server.
Particularly, when the session connection list item was sky, said processing module 530 was transmitted session to the purpose terminal and is set up request, sets up the initial session between source terminal and the purpose terminal; When this session connection list item is not sky; Set up the termination session between source terminal and the purpose terminal; And trigger transceiver module 520 and directly return session to source terminal and set up response message, under above-mentioned two kinds of situation, said processing module 530; All need be after said session to be advised successfully, indication logging modle 540 is preserved the session of having set up;
Said processing module 530 also is used for after transceiver module 520 receives the session release request from source terminal, according to the record case of session connection list item in the logging modle 540, carrying out corresponding session and discharging Request Processing.
Particularly; After transceiver module 520 receives the session release request from source terminal; Whether said processing module 530 discharges the corresponding session of request according to session is the termination session; Discharging the session of asking correspondence in session is to trigger transceiver module 520 when terminating session directly to return session release response message to source terminal; To discharge the corresponding session of request be not the termination session and trigger transceiver module 520 when in the session connection list item, not having the termination session and transmit session to the purpose terminal and discharge request in session; Discharging the corresponding session of request in session is not termination session and when in the session connection list item, having the termination session; Trigger processing module 530 and from the session connection list item, selects the termination session, and the termination session of selecting is set to initial session, and return original initial session release response message to source terminal according to predefined strategy.Under above-mentioned three kinds of situation, said processing module 530 needs session corresponding in the further deletion record module 540 session connection list items, and conversation recording that perhaps should correspondence exists mark to be set to " X ".
Signaling terminating gateway among the present invention optionally terminates from the signaling of source terminal, no longer signaling is forwarded to the purpose terminal, has reduced the signaling traffic load at purpose terminal, under the prerequisite that does not influence system architecture, has improved the reusability of media resource.
Through the description of above execution mode, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding; The part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of software product; This computer software product is stored in the storage medium, comprise some instructions with so that a station terminal equipment (can be mobile phone, personal computer; Server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be looked protection scope of the present invention.
It will be appreciated by those skilled in the art that the module in the device among the embodiment can be distributed in the device of embodiment according to the embodiment description, also can carry out respective change and be arranged in the one or more devices that are different from present embodiment.The module of the foregoing description can be integrated in one, and also can separate deployment; A module can be merged into, also a plurality of submodules can be further split into.
Claims (9)
1. a signaling terminating method is applied to comprise in the multimedia communication network system of purpose terminal, source terminal, signaling control server and signaling terminating gateway, it is characterized in that,
Said method comprising the steps of:
When said signaling terminating gateway receives when setting up request from the session of said source terminal, said signaling terminating gateway judges whether the record of session connection list item is sky; If said session connection list item be recorded as sky, said signaling terminating gateway is transmitted said session to said purpose terminal and is set up request; If the record of said session connection list item is not empty, said signaling terminating gateway directly returns session to said source terminal and sets up response message;
When said signaling terminating gateway receives when discharging request from the session of said source terminal, said signaling terminating gateway judges whether said session discharges the corresponding session of request is the termination session; If judged result is for being, said signaling terminating gateway directly returns session to said source terminal and discharges response message; If judged result is for denying; Transmit said session to said purpose terminal when there is not the termination session in said signaling terminating gateway in said session connection list item and discharge request; When in said session connection list item, having the termination session; From said session connection list item, select the termination session according to predefined strategy, and the termination session of said selection is set to initial session, then returns original initial session and discharge response message to said source terminal.
2. the method for claim 1 is characterized in that, before said signaling terminating gateway received the session foundation request from source terminal, it be purpose terminal configuration session connection list item that said signaling terminating gateway also needs the needs according to reality.
3. the method for claim 1 is characterized in that, information and the purpose terminal information that comprises said source terminal in the request set up in said session,
Said signaling terminating gateway directly returns after session sets up response message to said source terminal, also comprises:
Said signaling terminating gateway is set up the session between said source terminal and the said purpose terminal, and said session of having set up is added in the said session connection list item.
4. the method for claim 1 is characterized in that, said session discharges information and the purpose terminal information that comprises said source terminal in the request,
Said signaling terminating gateway directly after said source terminal returns session release response message, also comprises:
Said signaling terminating gateway discharges the session between said source terminal and the said purpose terminal, and said session is deleted from said session connection list item, and perhaps the session tokens with said release is " X ".
5. the method for claim 1 is characterized in that, said session connection list item comprises that there are mark in source terminal information, purpose end message, terminal label and record.
6. signaling terminating gateway in the network system of the multimedia communication that is applied to comprise that purpose terminal, source terminal, signaling control server and signaling terminating gateway are formed, is characterized in that,
Said signaling terminating gateway comprises configuration module, transceiver module, processing module and logging modle, wherein,
Said configuration module is used for according to actual needs and predetermined policy configurations session connection list item;
Said transceiver module; Electrically connect with said processing module; Request is set up in the session that is used to receive from said source terminal; Whether according to said session connection list item be empty, when said session connection list item is not sky, directly return session to said source terminal and set up response message if triggering said processing module; Reception discharges request from the session of said source terminal; Trigger said processing module and judge whether said session discharges the corresponding session of request is the termination session; When said session discharges the corresponding session of request for the termination session, directly return session to said source terminal and discharge response message, to discharge the corresponding session of request be not the termination session and transmit said session to said purpose terminal when in said session connection list item, not having the termination session and discharge request in said session;
Said processing module; Electrically connect with said configuration module; Be used for after said transceiver module receives the session foundation request from said source terminal; Whether the record according to the session connection list item of said logging modle is empty, said session connection list item be recorded as sky the time transmit said session to said purpose terminal and set up request, do not trigger said transceiver module when empty at the record of said session connection list item and directly return session and set up response message to said source terminal; After said transceiver module receives the session release request from said source terminal; Whether discharge the corresponding session of request according to said session is the termination session; When the corresponding session of said session release request is the termination session, trigger said transceiver module and directly return session release response message to said source terminal; Discharging the corresponding session of request in said session is not the termination session; And trigger said transceiver module when in said session connection list item, not having the termination session and transmit said session release request to said purpose terminal; Discharging the corresponding session of request in said session is not termination session and when in said session connection list item, having the termination session; From said session connection list item, select the termination session according to predefined strategy, and the termination session of said selection is set to initial session, and returns original initial session to said source terminal and discharge response message;
Said logging modle electrically connects with said processing module, is used for setting up according to said processing module the situation of session, the corresponding session information of session of the said foundation of storage in said session connection list item; According to the situation of said processing module release session, the corresponding session information of session of the said release of deletion from said session connection list item, perhaps the session tokens with said release is " X ".
7. like the said signaling terminating gateway of claim 6, it is characterized in that information and the purpose terminal information that comprises said source terminal in the response message set up in said session,
Said transceiver module also is used for returning said session to said signaling control server and sets up response message, makes said signaling control server send Media Stream according to the information and the purpose terminal information notification streams retransmission center of said source terminal to said source terminal.
8. like the said signaling terminating gateway of claim 6, it is characterized in that said session discharges information and the purpose terminal information that comprises said source terminal in the response message,
Said transceiver module; Also be used for returning said session and discharge response message, make said signaling control server stop to send Media Stream to said source terminal according to the information and the purpose terminal information notification streams retransmission center of said source terminal to said signaling control server.
9. like the said signaling terminating gateway of claim 6, it is characterized in that said session connection list item comprises that there are mark in source terminal information, purpose end message, terminal label and record.
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| CN101136810A (en) * | 2007-09-30 | 2008-03-05 | 华为技术有限公司 | Link state detecting method and network appliance |
| CN101163312A (en) * | 2007-11-08 | 2008-04-16 | 中兴通讯股份有限公司 | Signaling tracking method |
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| CN101136810A (en) * | 2007-09-30 | 2008-03-05 | 华为技术有限公司 | Link state detecting method and network appliance |
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