CN101296276B - Conference service informing method - Google Patents
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- CN101296276B CN101296276B CN 200710097445 CN200710097445A CN101296276B CN 101296276 B CN101296276 B CN 101296276B CN 200710097445 CN200710097445 CN 200710097445 CN 200710097445 A CN200710097445 A CN 200710097445A CN 101296276 B CN101296276 B CN 101296276B
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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 provides a method for notifying conference service, which comprises the steps that: after the calls between PSTN/ ISDN users and a conference service server in NGN are established, the MGCF, on behalf of PSTN/ ISDN users, sends a subscription request of the conference events to the conference service server, converts the conference event notification information from the conference service server to the call progress information in the PSTN/ISDN and sends the call process information to the PSTN/ ISDN users. Thus, the adoption of the method of the invention can correctly provide a function of notifying conference events for the NGN users and the PSTN/ ISDN users when the NGN users and the PSTN/ ISDN users take part in the same conference without changing the original using habits of users.
Description
Technical field
The present invention relates to the communications field, more specifically, relate to a kind of conference service informing method in the next generation network (NGN).
Background technology
Be in the next generation network (NGN) of core with IP Multimedia System (IMS), adopt initial session protocol (SIP) as professional control protocol, every communication service can be cooperated with the application server (AS) by operator's setting in the network by user's intelligent terminal to be finished.
Fig. 1 shows the realization block architecture diagram of a kind of typical services in the next generation network, wherein, application server (AS) (may exist a plurality of, be respectively applied for different business) link to each other with the service-call session control function (S-CSCF) of user attaching network by interface, the professional control messages of SIP between user terminal A and the user terminal B (with dashed lines sign) can be flowed through Proxy-Call Session Control Function (P-CSCF) in separately the visited network and the service-call session control function (S-CSCF) in the home network and application server (according to the kind of customer service, may pass through different application servers), application server can be by the business of various processing to realize enriching to professional control messages.User terminal A and user terminal B utilize the service message exchange and consult the media parameter that both sides supported, between is set up the IP Media Stream and connected (using solid line), and the IP Media Stream is used for transmitting data such as conversation voice packets.If application server is equipped with the medium processing capacity, then also can sets up Media Stream between user terminal and the application server and be connected realization human-computer dialogue business, for example automatic speech service of bank.
Next generation network need be considered the intercommunication with traditional PSTN (PSTN)/ISDN (integrated services digital network), comprise IMS intelligent terminal among the NGN and the terminal mutual in the PSTN/ISDN network, and the business that the terminal in the PSTN/ISDN network can use NGN to provide, the business that the NGN terminal can use the PSTN/ISDN network to be provided.
Fig. 2 shows the realization block architecture diagram of NGN and PSTN/ISDN network interworking, wherein, increased by two functional entitys between NGN network and PSTN/ISDN network: it is voice flow in the PSTN/ISDN network that media gateway (MGW) is responsible for the IP media stream transition among the NGN, and reverse conversion; MGCF (MGCF) then is responsible for the SIP service message among the NGN is converted to TUP (Telephone User Part)/ISUP (integrated service User Part) service message in the PSTN/ISDN network, and reverse conversion, and MGW is controlled.
There are corresponding relation in SIP service message and TUP/ISUP service message that some are main, such as the REL (release message) of BYE (on-hook) message among IAM (initial address message), the SIP of the INVITE among the SIP (invitation) message in can corresponding TUP/ISUP in can corresponding TUP/ISUP, in addition, ANM (response message) and the RLC (Release complete) of the 200OK among the SIP (response) message (according to the difference of its pairing request message) in can corresponding TUP/ISUP.
Fig. 3 shows the IMS terminal of NGN and the signal flow graph that the PSTN/ISDN terminal is set up conversation and dispose procedure, wherein, for simplicity, NGN user's P-CSCF, S-CSCF and AS are integrated, MGCF and MGW are integrated, and do not mark the PSTN/ISDN terminal, but this does not influence to elaboration of the present invention.As shown in Figure 3, may further comprise the steps:
Step S301～S302, NGN user A sends INVITE to PSTN/ISDN user B and invites request;
Step S303, MGCF is converted to IAM message among the PSTN/ISDN with above-mentioned request, sends to the PSTN/ISDN switch at user B place;
Step S304, after user B off-hook was answered, the PSTN/ISDN switch returned ANM to MGCF;
Step S305～S306, MGCF are converted into 200OK (response) message among the SIP, send to user A; And
Step S307～S308, user A sends ACK (affirmation is replied in invitation) message to MGCF, and it need not to be converted to the message among the PSTN/ISDN.
Mutual by above message set up the IP Media Stream between user terminal A and MGW, set up voice flow between MGW and PSTN/ISDN switch, and by the conversion of MGW, user A and user B can converse.Want in user terminal A under the situation of on-hook, it sends the on-hook request to the PSTN/ISDN switch, and the PSTN/ISDN switch returns to the on-hook response user terminal A (step S309～S314) more then.
Fig. 4 shows the signal flow graph of typical NGN IMS terminal and the common convention business process of participating in of PSTN/ISDN terminal.For simplicity, omitted the network equipments such as P-CSCF, S-CSCF among the figure, MGCF and MGW are integrated, do not marked the PSTN/ISDN terminal, this does not influence elaboration of the present invention.In Fig. 4, the convention business server is arranged in NGN, is used to all users that the convention business function is provided, and can set up speech channel simultaneously with a plurality of users, sends to each user behind the audio mixing again.As shown in Figure 4, may further comprise the steps:
Step S401～S406, NGN user A at first sends the request (INVITE) of inviting to the convention business server, sets up flow process by normal session and creates a conferencing resource (the convention business service can distribute a specific conferencing resource number) at convention business server place;
Step S407 sets up conversation between user A and convention business server;
Step S408～S409, if NGN user A wants to invite PSTN/ISDN user B to add this meeting, then can send the invitation request to the convention business server, REFER (indication) message in the Session Initiation Protocol is adopted in this invitation request, and the number of PSTN/ISDN user B wherein is provided;
Step S410～S411, the convention business server returns acceptance response, adopts the 202Accepted response; And
Step S412～S417, the convention business server is asked according to REFER, sends the request (INVITE) of inviting to PSTN/ISDN user B, through the conversion of MGCF/MGW, finally between convention business server and PSTN/ISDN user B, set up conversation, make user B add this meeting.
In addition, NGN user A also can inform PSTN/ISDN user C with meeting resource number sign indicating number through various channels, dials this conferencing resource number, i.e. following steps as shown in Figure 4 voluntarily by user C:
Step S418, PSTN/ISDN user B and convention business server are set up conversation;
Step S419, the PSTN/ISDN switch sends IAM request (called number is the conferencing resource number) to MGCF;
Step S420, MGCF is converted to the INVITE request with this request, sends to the convention business server; And
Step S421～S423, convention business server echo reply message, this call request is accepted in expression, also sets up the conversation speech channel between convention business server and PSTN/ISDN user C, makes user C also add this meeting.
The user after adding meeting, can by discharge and the convention business server between the mode of conversation withdraw from meeting.Meeting has a lot of users and participates in, and after a user added meeting, which user may be concerned about follow-uply had add again or withdrawed from meeting this time.
In NGN, NGN user can obtain these information by the mode of subscribing to meeting event.Fig. 5 is the signal flow graph that NGN user subscribes to meeting event.As shown in Figure 5, may further comprise the steps:
Step S501, NGN user A successfully adds meeting;
Step S502～S503 sends SUBSCRIBE (subscription) message to the convention business server, and wherein the message destination is the conferencing resource number, and Event (incident) parameter is conference;
Step S504～S505, convention business server return success response (200OK);
Step S506～S508, when other user added or withdraws from meeting, the convention business server sent a NOTIFY (notice) message to user A, contained information such as Subscriber Number, user action (add or withdraw from meeting) in the message body; And
Step S509～S510, user A return and confirm response (200OK), acknowledge receipt of this notification message.
In the PSTN/ISDN network, when the user added or withdraws from meeting, conference system can initiatively send a notification message (adopting CPG (call progress) message among the ISUP between switch) to PSTN/ISDN user, subscribes in advance and need not the user.
Therefore the informing mechanism of convention business is different in NGN and the PSTN/ISDN network, when NGN IMS terminal and the PSTN/ISDN terminal is common when participating in a meeting, will have problems.For example: when the Conference server among the use NGN, NGN IMS terminal can obtain announcement information by the mechanism of subscribing to meeting event, and the PSTN/ISDN terminal can initiatively not subscribed to meeting event, then Conference server just can not send a notification message to the PSTN/ISDN terminal, like this, the PSTN/ISDN terminal just can't obtain the notice that other user adds or withdraw from meeting.And when the conference system in the use PSTN/ISDN network, because conference system does not possess the ability that the user subscribes to of accepting, NGN IMS terminal can't adopt the mechanism of subscribing to meeting event, can only receive all notices that conference system sends passively.
Therefore, being badly in need of a kind of user who solves in the network that improves one's methods can't adopt subscribing mechanism to subscribe to the problem of meeting event.
Summary of the invention
In order to address the above problem, the invention provides a kind of conference service informing method, it is used for across a network provides the meeting event informing function for NGN user or PSTN/ISDN user.
Conference service informing method of the present invention may further comprise the steps: after the convention business server in PSTN/ISDN user and NGN was set up conversation, on behalf of PSTN/ISDN user, MGCF send the subscribe request of meeting event to the convention business server; And MGCF will convert the call progress message among the PSTN/ISDN from the meeting event notification message of convention business server to, and send to PSTN/ISDN user.
In addition, this conference service informing method can also comprise following processing: the convention business server is received and is returned success response to MGCF after the subscribe request.And MGCF conversion meeting event notification message the time, return acknowledge message to the convention business server, to acknowledge receipt of the meeting event notification message.
In the present invention, MGCF judges by the following method whether PSTN/ISDN user sets up conversation with the convention business server: process is set up in the conversation of the user among MGCF detection PSTN/ISDN user and the NGN, comprise default attribute in the contact address that provides in the message if the user among the discovery NGN sets up in session, judge that then the user among the NGN is the convention business server.
Wherein, default attribute for " being focus " (isfocus).The source address of subscribe request is PSTN/ISDN user's a number, and the destination-address of subscribe request is the conferencing resource number, and the event argument of subscribe request is meeting.
In addition, comprise Subscriber Number and user action information in the meeting event notification message, wherein user action information comprises that the user adds conference actions information and the user withdraws from conference actions information.
Thereby, by method of the present invention, can across a network provide the meeting event informing function for NGN user or PSTN/ISDN user.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, perhaps understand by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 shows the realization block architecture diagram of a kind of typical services in the next generation network;
Fig. 2 shows the realization block architecture diagram of NGN and PSTN/ISDN network interworking;
Fig. 3 shows the IMS terminal of NGN and the signal flow graph that the PSTN/ISDN terminal is set up conversation and dispose procedure;
Fig. 4 shows the signal flow graph of typical NGN IMS terminal and the common convention business process of participating in of PSTN/ISDN terminal;
Fig. 5 is the signal flow graph that NGN user subscribes to meeting event in the prior art;
Fig. 6 is the flow chart according to conference service informing method of the present invention; And
Fig. 7 is the signal flow graph that the process of meeting event informing function is provided for PSTN/ISDN user according to the NGN convention business server of the embodiment of the invention.
Embodiment
Below in conjunction with accompanying drawing the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, and be not used in qualification the present invention.
For the situation of convention business server in NGN, subject matter is in the PSTN/ISDN current mechanism, and the PSTN/ISDN terminal is can initiatively not subscribe to meeting event, does not also have corresponding message to can be used to do this subscription operation; And in NGN convention business mechanism, the user does not subscribe to, and the convention business server just can not send a notification message to the user.In the present invention, represent the PSTN/ISDN terminal to send the meeting event subscribe request by MGCF to the convention business server.
Fig. 6 is the flow chart according to conference service informing method of the present invention.As shown in Figure 6, this method may further comprise the steps:
Step S602, after the convention business server in PSTN/ISDN user and NGN was set up conversation, on behalf of PSTN/ISDN user, MGCF send the subscribe request of meeting event to the convention business server; And
Step S604, MGCF will convert the call progress message among the PSTN/ISDN from the meeting event notification message of convention business server to, and send to PSTN/ISDN user.
In addition, this conference service informing method can also comprise following processing: the convention business server is received and is returned success response to MGCF after the subscribe request.And MGCF conversion meeting event notification message the time, return acknowledge message to the convention business server, to acknowledge receipt of the meeting event notification message.
MGCF judges by the following method whether PSTN/ISDN user sets up conversation with the convention business server: process is set up in the conversation of the user among MGCF detection PSTN/ISDN user and the NGN, comprise default attribute in the contact address that provides in the message if the user among the discovery NGN sets up in session, judge that then the user among the NGN is the convention business server.
Wherein, default attribute is isfocus (being focus, below with English mark).The source address of subscribe request is PSTN/ISDN user's a number, and the destination-address of subscribe request is the conferencing resource number, and the event argument of subscribe request is meeting.
In addition, comprise Subscriber Number and user action information in the meeting event notification message, wherein user action information comprises that the user adds conference actions information and the user withdraws from conference actions information.
Fig. 7 is the signal flow graph that the process of meeting event informing function is provided for PSTN/ISDN user according to the NGN convention business server of the embodiment of the invention.As shown in Figure 7, may further comprise the steps:
Step S701, the convention business server among PSTN/ISDN user and the NGN is set up conversation;
Step S702, on behalf of this PSTN/ISDN user, MGCF initiatively send the subscribe request of meeting event to the convention business server, the source address of this SUBSCRIBE message is PSTN/ISDN user's a number, and the destination is the conferencing resource number, and Event (incident) parameter is conference;
Step S703, convention business server return success response (200OK);
Step S704～S705, when other user added or withdraws from meeting, the convention business server sent a NOTIFY (notice) message to MGCF, contained information such as Subscriber Number, user action (add or withdraw from meeting) in the message body;
Step S706, MGCF is converted to CPG (call progress) message among the ISUP with this notification message, sends to the PSTN/ISDN switch; And
Step S707 returns affirmation response (200OK) to the convention business server, acknowledges receipt of this notification message.
By said method, PSTN/ISDN user can receive that other user adds or withdraw from the notification message of meeting after adding meeting.
In Fig. 7, MGCF must judge PSTN/ISDN user and set up conversation with the convention business server, could send the meeting event subscribe message to the convention business server.If PSTN/ISDN user be with NGN in common IMS terminal set up conversation, on behalf of PSTN/ISDN user, MGCF can not send the meeting event subscribe message to common IMS terminal.
MGCF can adopt following method to judge whether PSTN/ISDN user has set up conversation with the convention business server, set up in the process of conversation user and convention business server, the convention business server in messages sent by users (step S412 as shown in Figure 4 or step S420) contact address (Contact parameter) of oneself can be provided, this parameter can comprise an isfocus attribute, shows oneself to have simultaneously the ability of conversing with a plurality of users.When two common users set up session, be not comprise this property value in the contact address parameter that they provide mutually.
Therefore, MGCF can utilize These characteristics, the message of process is set up in monitoring PSTN/ISDN user and NGN user's conversation, judgement is convention business server (the Contact parameter comprises the isfocus attribute) with the opposing party that PSTN/ISDN user sets up conversation, still common IMS terminal (the Contact parameter does not comprise the isfocus attribute).
In sum, adopt the present invention program, can be when NGN user and PSTN/ISDN user participate in same meeting, correctly provide the meeting event informing function, and do not change original use habit of user for NGN user and PSTN/ISDN user.
Be the preferred embodiments of the present invention only below, be not limited to the present invention, for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (7)
1. a conference service informing method is characterized in that, being used for provides the meeting event notice by next generation network convention business server to PSTN/integrated services digital network user, may further comprise the steps:
After convention business server in described PSTN/integrated services digital network user and next generation network was set up conversation, on behalf of described PSTN/integrated services digital network user, MGCF send the subscribe request of meeting event to described convention business server; And
Described MGCF will convert the call progress message in described PSTN/integrated services digital network from the meeting event notification message of described convention business server to, and send to described PSTN/integrated services digital network user.
2. conference service informing method according to claim 1 is characterized in that, also comprises following processing:
Described convention business server is received and is returned success response to described MGCF after the described subscribe request.
3. conference service informing method according to claim 1 and 2 is characterized in that, also comprises following processing:
When described MGCF is changed described meeting event notification message, return acknowledge message to described convention business server, to acknowledge receipt of described meeting event notification message.
4. conference service informing method according to claim 3, it is characterized in that described MGCF judges by the following method whether described PSTN/integrated services digital network user sets up conversation with described convention business server:
Described MGCF detects the conversation of the user in described PSTN/integrated services digital network user and the described next generation network and sets up process, if default attribute is provided in the contact address that provides in the message to find that user in the described next generation network sets up in session, judge that then the user in the described next generation network is described convention business server.
5. conference service informing method according to claim 4 is characterized in that, described default attribute is " being focus ".
6. conference service informing method according to claim 1, it is characterized in that, the source address of described subscribe request is PSTN/integrated services digital network user's a number, the destination-address of described subscribe request is the conferencing resource number, and the event argument of described subscribe request is meeting.
7. conference service informing method according to claim 1, it is characterized in that, comprise Subscriber Number and user action information in the described meeting event notification message, wherein said user action information comprises that the user adds conference actions information and the user withdraws from conference actions information.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710097445 CN101296276B (en) | 2007-04-29 | 2007-04-29 | Conference service informing method |
| PCT/CN2007/003698 WO2008131621A1 (en) | 2007-04-29 | 2007-12-20 | Conference service notification method |
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| CN 200710097445 CN101296276B (en) | 2007-04-29 | 2007-04-29 | Conference service informing method |
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| CN101296276A CN101296276A (en) | 2008-10-29 |
| CN101296276B true CN101296276B (en) | 2010-12-08 |
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| CN104009958A (en) * | 2013-02-22 | 2014-08-27 | 中兴通讯股份有限公司 | Method and system for carrying out multimedia-conference notification service between NGN and IMS |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640053A (en) * | 2002-01-04 | 2005-07-13 | 艾利森电话股份有限公司 | System and method of billing based on the reported traffic load in a packet-oriented telecommunications network |
| CN1852081A (en) * | 2005-07-12 | 2006-10-25 | 华为技术有限公司 | Method for realizing muti-part meeting through uest generation network |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006068391A1 (en) * | 2004-12-20 | 2006-06-29 | Lg Electronics Inc. | Multimedia access system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1640053A (en) * | 2002-01-04 | 2005-07-13 | 艾利森电话股份有限公司 | System and method of billing based on the reported traffic load in a packet-oriented telecommunications network |
| CN1852081A (en) * | 2005-07-12 | 2006-10-25 | 华为技术有限公司 | Method for realizing muti-part meeting through uest generation network |
Non-Patent Citations (5)
| Title |
|---|
| A.Johnston等.Session Initiation Protocol (SIP) Call Control - ConferencingforUserAgents.RFC 4579.2006,1,6. |
| A.Johnston等.Session Initiation Protocol (SIP) Call Control-ConferencingforUserAgents.RFC 4579.2006,1,6. * |
| Protocol specification.ETSI TS 183 005 V1.1.1.2006,6,9-10. * |
| PSTN/ISDNsimulation services:Conference(CONF) * |
| Telecommunications and Internet converged ServicesandProtocols for Advanced Networking(TISPAN) * |
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| CN101296276A (en) | 2008-10-29 |
| WO2008131621A1 (en) | 2008-11-06 |
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Denomination of invention: Meeting Business Notification Method Granted publication date: 20101208 Pledgee: Huangpu Sub branch of Bank of Shanghai Co.,Ltd. Pledgor: Shanghai source Hui Information Polytron Technologies Inc. Registration number: Y2024310000052 |
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