CN101895553A - Method and system for attending multimedia conference by SIP (Session Initiation Protocol) terminal - Google Patents
Method and system for attending multimedia conference by SIP (Session Initiation Protocol) terminal Download PDFInfo
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- CN101895553A CN101895553A CN2010102357072A CN201010235707A CN101895553A CN 101895553 A CN101895553 A CN 101895553A CN 2010102357072 A CN2010102357072 A CN 2010102357072A CN 201010235707 A CN201010235707 A CN 201010235707A CN 101895553 A CN101895553 A CN 101895553A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1813—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast for computer conferences, e.g. chat rooms
- H04L12/1818—Conference organisation arrangements, e.g. handling schedules, setting up parameters needed by nodes to attend a conference, booking network resources, notifying involved parties
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Abstract
The invention discloses a method for attending a multimedia conference by an SIP (Session Initiation Protocol) terminal, which comprises the following steps of: receiving information for inviting a second SIP terminal to attend a multimedia conference, which is transmitted by a first SIP terminal, wherein the multimedia conference is created by the first SIP terminal; transmitting the inviting information to the second SIP terminal and downward calling a binding terminal of the second SIP terminal; when a media channel is established between the binding terminal receiving the downward calling and an MRS (Media Resource Server) l, informing a conversation state of the binding terminal to the second SIP terminal; and after the second SIP terminal receives the conversation state of the binding terminal, receiving a subscribing signaling of the second SIP terminal on the conference place information of the multimedia conference and transmitting the conference place information of the multimedia conference to the second SIP terminal. The invention also discloses a Conf AS (Conference Application Server) and a device for attending a multimedia conference by the SIP terminal. The method provided by the invention can save resources, simplify the treatment process and shorten the treatment time.
Description
Technical field
The embodiment of the invention relates to communication technical field, especially relates to the method and system of the sip terminal attending multimedia conference in this field.
Background technology
At IMS (Internet Protocol Multimedia Subsystem, internet protocol multi-media sub-system) in the network, multimedia conferencing has provided audio frequency, video, data collaborative three big functions, has had the comprehensive meeting of control ability in many ways, and wherein data collaborative has comprised and application such as use to share, electronic whiteboard, webpage are shared.
In actual applications, the multimedia conferencing function offers the user as a value-added service, in the IMS network, existing multimedia conferencing mainly is based on SIP (Session Initiation Protocol, session initiation protocol) signaling realizes that sip terminal uses the function of multimedia conferencing, but the SIP signaling has certain limitation, use the function of multimedia conferencing for the binding terminal of supporting sip terminal, need two cover SIP signalings calling SIP terminal and binding terminal respectively, the IMS core net needs to handle two cover SIP signalings in a call flow in such cases, for the network element that relates in the IMS network, the handling process complexity, consuming time longer, waste a large amount of resources.And difference calling SIP terminal and binding terminal in the IMS network, the network element that relates in the IMS network all need be done corresponding two cover SIP signalings and make corresponding adjustment, and engineering amount of reform is bigger, wastes a large amount of resources.
Summary of the invention
The embodiment of the invention provides a kind of method of attending multimedia conference by SIP (Session Initiation Protocol) terminal, in order to save resource, simplifies handling process, shortens the processing time, comprising:
Receive the information of the invitation second sip terminal attending multimedia conference of first sip terminal transmission, described multimedia conferencing is created by first sip terminal;
Message request is sent to second sip terminal, and exhales the binding terminal of second sip terminal down;
After binding terminal of exhaling and Media Resource Server MRS set up media channel, notify second sip terminal with the talking state of binding terminal under receiving;
Receive the talking state of binding terminal at second sip terminal after, receive the subscription signaling of second sip terminal, the meeting field information of described multimedia conferencing is sent to second sip terminal the meeting field information of described multimedia conferencing.
The embodiment of the invention also provides a kind of conference applications server Conf AS, in order to save resource, simplifies handling process, shortens the processing time, comprising:
Receiving element is used to receive the information of the invitation second sip terminal attending multimedia conference that first sip terminal sends, and described multimedia conferencing is created by first sip terminal;
Transmitting element is used for message request is sent to second sip terminal, and exhales the binding terminal of second sip terminal down;
Notification unit is used for notifying second sip terminal with the talking state of binding terminal after receiving the binding terminal of exhaling down and setting up media channel with Media Resource Server MRS;
Subscriber units is used for receiving the subscription signaling of second sip terminal to the meeting field information of described multimedia conferencing after second sip terminal receives the talking state of binding terminal, and the meeting field information of described multimedia conferencing is sent to second sip terminal.
The embodiment of the invention also provides a kind of system of attending multimedia conference by SIP (Session Initiation Protocol) terminal, in order to save resource, simplify handling process, shorten the processing time, comprise first sip terminal, conference applications server Conf AS, second sip terminal, Media Resource Server MRS and binding terminal:
First sip terminal is used for inviting the second sip terminal attending multimedia conference by Conf AS, and described multimedia conferencing is created by first sip terminal;
Conf AS is used for meeting invitation is sent to second sip terminal, and exhales the binding terminal of second sip terminal down; And, notify second sip terminal with the talking state of binding terminal;
Second sip terminal is used to receive invitation, subscribes to and receive the meeting field information of described multimedia conferencing, participates in described multimedia conferencing;
MRS is used for setting up media channel by Conf AS and binding terminal;
The binding terminal is used to receive the following of Conf AS and exhales, and sets up media channel by Conf AS and MRS.
In embodiments of the present invention, receive the information of the invitation second sip terminal attending multimedia conference of first sip terminal transmission, described multimedia conferencing is created by first sip terminal; Message request is sent to second sip terminal, and exhales the binding terminal of second sip terminal down; After binding terminal of exhaling and Media Resource Server MRS set up media channel, notify second sip terminal with the talking state of binding terminal under receiving; Receive the talking state of binding terminal at second sip terminal after, receive the subscription signaling of second sip terminal, the meeting field information of described multimedia conferencing is sent to second sip terminal the meeting field information of described multimedia conferencing.In embodiments of the present invention, for second sip terminal and binding terminal thereof, only need a cover SIP signaling, do not need two cover SIP signalings to call out second sip terminal and binding terminal thereof respectively, for the network element that relates in the IMS network, simplify handling process, shortened the flow process holding time, saved resource.And the network element that relates in the IMS network does not need corresponding two cover SIP signalings to make corresponding adjustment, equally can save ample resources yet.
Description of drawings
The flow chart of the method for the sip terminal attending multimedia conference that Fig. 1 provides for the embodiment of the invention;
The network environment schematic diagram that the method for the sip terminal attending multimedia conference that Fig. 2 provides for the embodiment of the invention is used;
The flow chart of the instantiation of the method for the sip terminal attending multimedia conference that Fig. 3 provides for the embodiment of the invention;
The sip terminal A that Fig. 4 provides for the embodiment of the invention creates the flow chart of multimedia conferencing;
The concrete Signalling exchange figure of the method for the attending multimedia conference by SIP (Session Initiation Protocol) terminal that Fig. 5 provides for the embodiment of the invention;
The sip terminal B that Fig. 6 provides for the embodiment of the invention participates in the meeting control flow chart that relates to behind this multimedia conferencing;
The structural representation of the conference applications server Conf AS that Fig. 7 provides for the embodiment of the invention;
The structural representation of the receiving element that Fig. 8 provides for the embodiment of the invention;
The structural representation of the system of the sip terminal attending multimedia conference that Fig. 9 provides for the embodiment of the invention.
Embodiment
In the prior art, the SIP signaling has certain limitation, use the function of multimedia conferencing for the binding terminal of supporting sip terminal, need two cover SIP signalings calling SIP terminal and binding terminal respectively, the IMS core net needs to handle two cover SIP signalings in a call flow in such cases, for the network element that relates in the IMS network, and the handling process complexity, consuming time longer, waste a large amount of resources; And difference calling SIP terminal and binding terminal in the IMS network, the network element that relates in the IMS network all need be done corresponding two cover SIP signalings as corresponding adjustment, and engineering amount of reform is bigger, wastes a large amount of resources.For solving the problems of the technologies described above, the embodiment of the invention provides a kind of method of sip terminal attending multimedia conference, and concrete implementing procedure comprises as shown in Figure 1:
The information of the invitation second sip terminal attending multimedia conference that step 101, reception first sip terminal send, multimedia conferencing is created by first sip terminal;
After step 103, the binding terminal of exhaling and Media Resource Server MRS set up media channel, notify second sip terminal with the talking state of binding terminal under receiving;
Flow process as shown in Figure 1, step 101 is when implementing, and multimedia conferencing is created by first sip terminal, specifically comprises:
Receive the signaling of the establishment multimedia conferencing of first sip terminal initiation, and the media resource information of first sip terminal is sent to MRS, and the media resource information of MRS is sent to first sip terminal;
When receiving first sip terminal and MRS respectively to the affirmation information of the other side's media resource information, to confirm to set up media channel between first sip terminal and MRS, multimedia conferencing is created successfully.
In one embodiment, receive the signaling of the establishment multimedia conferencing of first sip terminal initiation, specifically comprise: receive the signaling that first sip terminal utilizes the establishment multimedia conferencing of HTML (Hypertext Markup Language) HTTP initiation.
In one embodiment, the signaling of establishment multimedia conferencing comprises following any one or multinomial set: conference type, Session Topic, conference creation person, meeting time span, meeting number;
Media resource information comprises following any one or multinomial set: media port, medium IP address, resource reservation situation.
In one embodiment, binding terminal and Media Resource Server MRS set up media channel, specifically comprise:
Receive 183 (Session Description Protocol SDP) signaling that the binding terminal sends, obtain the media information of binding terminal, and be sent to MRS by the media information of inviting Invite (SDP) signaling will bind terminal;
Receive MRS by 183 (SDP) signaling, obtain the media information of MRS;
Utilize the Prack signaling that the media information of MRS and the media information of binding terminal are confirmed in advance;
Reply ACK signaling and MRS affirmation signaling link negotiation result by 200Invite/;
Receive the ring signaling that the binding terminal is sent by 180 ring Ring signalings;
Utilize the Prack signaling that the ring signaling is confirmed in advance, and notify second sip terminal ringing condition of binding terminal;
Receive the 200Invite signaling of sending behind the binding terminal off-hook;
To binding terminal feeding back ACK signaling, determine to have set up media channel between binding terminal and MRS.
In a specific embodiment, relating to network element comprises: the binding terminal of first sip terminal, second sip terminal, second sip terminal, Conf AS (Conference Application Server, the conference applications server), MRS (Media Resourse Server, Media Resource Server).Be the more direct annexation of describing each network element more easily, get sip terminal A as first sip terminal, get sip terminal B as second terminal, get the binding terminal of terminal C as sip terminal B, the annexation of each network element sees also Fig. 2, and wherein, sip terminal A is as the founder and the host of multimedia conferencing, the concrete handling process that above-mentioned five network elements adopt method shown in Figure 1 comprises as shown in Figure 3:
During enforcement, binding terminal C is the binding terminal of sip terminal B, and when sip terminal B participated in a conference, binding terminal C was actual correspondent.Binding terminal C can be a fixed line, also can be mobile phone, sip terminal or the like.
Mention in the step 301, multimedia conferencing is created by sip terminal A, and concrete visioning procedure comprises as shown in Figure 4:
In one embodiment, when sip terminal A adopted flow process shown in Figure 4 to create multimedia conferencing, sip terminal A utilized HTTP (HyperText Transfer Protocol, HTML (Hypertext Markup Language)) to initiate to create the signaling of multimedia conferencing.In the prior art, because the SIP signaling is subject to UDP (User Datagram Protocol, User Datagram Protoco (UDP)), therefore, but transmission package length can not surpass 1300 bytes, when the medium packet length of consulting surpasses 1300 bytes, the intercepted phenomenon of medium signaling packet can occur, and then also just can't create multimedia conferencing, cause the user can't use the multimedia conferencing function.And in the embodiment of the invention, sip terminal A utilizes HTTP to initiate to create the signaling of multimedia conferencing, and HTTP is not limited to UDP, does not also just exist the medium packet length can not surpass the restriction of 1300 bytes, avoid occurring the intercepted phenomenon of medium signaling packet, make the multimedia conferencing function more stable.
During enforcement, the signaling of creating multimedia conferencing comprises following any one or multinomial set: conference type, Session Topic, conference creation person, meeting time span, meeting number; Media resource information comprises following any one or multinomial set: media port, medium IP address, resource reservation situation.Wherein, conference type generally includes audio or video two classes.
Sip terminal A creates multimedia conferencing, pass through Conf AS switched-media resource information with MRS, the SIP signaling that relates to comprises: 183 (SDP offer (Session Description Protocol, Session Description Protocol provides)), invitation invite (SDP), Prack (SDP)/200Prack, renewal Update (SDP)/200Update (SDP), 200OK, ACK or the like.During enforcement, after sip terminal A creates multimedia conferencing, and set up media channel between MRS.
Binding terminal C receives following the exhaling of Conf AS, set up media channel by Conf AS and Media Resource Server MRS, the SIP signaling that relates to comprises: 183 (SDP offer), invite (SDP), Prack (SDP)/200Prack, Update (SDP)/200Update (SDP), 200OK, ACK or the like.
Flow process as shown in Figure 3, step 303 are when implementing, and binding terminal C receives following the exhaling of Conf AS, and sets up media channel by Conf AS and Media Resource Server MRS, specifically comprises:
Binding terminal C receives following the exhaling of Conf AS, and by 183 (SDP) signaling self media information is sent to Conf AS, and the media information that will bind terminal C by Invite (SDP) signaling by Conf AS is sent to MRS;
MRS sends to Conf AS by 183 (SDP) signaling with self media information;
Conf AS utilizes the PRACK signaling that the media information of MRS and the media information of binding terminal C are confirmed in advance;
Reply the ACK signaling by 200Invite/ between MRS and Conf AS and confirm signaling link negotiation result;
Binding terminal C sends the ring signaling by 180 ring Ring signalings, and is sent to Conf AS;
Conf AS utilizes the PRACK signaling that the ring signaling is confirmed in advance, and the ringing condition notice sip terminal B of binding terminal C;
Behind the binding terminal C off-hook, send the 200Invite signaling to Conf AS;
If Conf AS feeding back ACK signaling is then bound between terminal C and MRS and has been set up media channel.
In order to allow the user more clearly understand the method for the attending multimedia conference by SIP (Session Initiation Protocol) terminal that the embodiment of the invention provides, the embodiment of the invention utilizes the signaling transmission diagram to discuss in detail, and particular content sees also Fig. 5:
Step 501, sip terminal A send the establishment multimedia conferencing CreateConfReq signaling of HTTP to Conf AS;
Step 502, Conf AS send the Invite signaling to sip terminal A;
Step 503, sip terminal A send 183 (SDP offer) signaling to Conf AS;
Step 504, Conf AS send Invite (SDP) signaling to MRS;
Step 505, MRS feedback 183 (SDP) signaling are to Conf AS;
Step 506, Conf AS send Prack (SDP)/200Prack signaling to MRS;
Step 507, Conf AS send Prack (SDP)/200Prack signaling to sip terminal A;
Step 508, sip terminal A send and upgrade Update (SDP)/200Update (SDP) signaling to Conf AS;
Step 509, Conf AS send Update (SDP)/200Update (SDP) signaling to MRS;
Step 510, sip terminal A send the 200OK signaling to Conf AS;
Step 511, Conf AS send the 200OK signaling to MRS;
Step 512, MRS feeding back ACK signaling are to Conf AS;
Step 513, Conf AS feeding back ACK signaling are to sip terminal A;
So far, set up media channel between sip terminal A and MRS;
Step 514, Conf AS send the CreateConfReq signaling of HTTP to sip terminal A;
Step 515, sip terminal A send the signaling Subscribe/200Subscribe signaling of the meeting of subscription field information to Conf AS;
Step 516, Conf AS send notice Notify/200Notify signaling to sip terminal A;
Step 517, sip terminal A send message request Message MemberInviteReq signaling to ConfAS;
Step 518, Conf AS feedback 200Message signaling are to sip terminal A;
Step 519, Conf AS send invitation notification Message ConfURINotify signaling to sip terminal B;
Step 520, sip terminal B feedback 200Message signaling are to Conf AS;
Step 521, Conf AS send the Invite signaling to binding terminal C;
Step 522, binding terminal C feedback 183 (SDP offer) signaling are to Conf AS;
Step 523, Conf AS send Invite (SDP) signaling to MRS;
Step 524, MRS feedback 183 (SDP) signaling are to Conf AS;
Step 525, Conf AS send Prack (SDP)/200Prack signaling to MRS;
Step 526, Conf AS send Prack (SDP)/200Prack signaling to binding terminal C;
Step 527, Conf AS send Update (SDP) signaling to binding terminal C;
Step 528, binding terminal C feedback Update (SDP) signaling are to Conf AS;
Step 529, Conf AS send Update (SDP) signaling to MRS;
Step 530, Conf AS send 200Update (SDP) signaling to binding terminal C;
Step 531, MRS feedback 200Invite/ACK to Conf AS;
Step 532, binding terminal C send the 180Ring/Prack/200Prack signaling to Conf AS;
Step 533, Conf AS send off-hook Message Call In (Ring)/200OK signaling to sip terminal B;
Step 534, binding terminal C feedback 200Invite/ACK signaling are to Conf AS;
So far, set up media channel between binding terminal C and MRS;
Step 535, Conf AS transmit status notice Message Status Notify/200OK signaling are to sip terminal B;
Step 536, sip terminal B send the Subscribe/200Subscribe signaling to Conf AS;
Step 537, Conf AS send the Notify/200Notify signaling to sip terminal B.
Wherein, step 501 is to the flow process of step 516 for the establishment multimedia conferencing, and step 517 is to the flow process of step 537 for inviting the member to join.
In embodiments of the present invention, multimedia conferencing is set up successfully, and sip terminal A is as the meeting control terminal, when sip terminal B participates in the meeting control flow process that relates to behind this multimedia conferencing as shown in Figure 6, comprising:
Step 601, sip terminal A initiate and can control order to Conf AS by the HTTP signaling;
Step 602, Conf AS will be controlled the sip terminal A that the result sends conduct meeting control terminal to disputing by the HTTP letter;
Step 603, Conf AS utilize meeting control result can notify the sip terminal B that has subscribed to the meeting field information by control notice signaling Notify;
Carry out Media Stream (RTP/RTCP (Real-Time Protocol/Real-Time Control Protocol, RTP/real time control protocol)) real-time Transmission between step 604, MRS and the meeting control terminal;
Real-time transmitting media stream between step 605, MRS and the binding terminal C.
Step 601 can be controlled order and comprise when implementing: interpolations/removing members, increase meeting time span, conference mute/cancellation are quiet or the like.Wherein, sip terminal A utilizes the HTTP signaling can control order to Conf AS initiation, rather than utilizes the initiation of SIP signaling can control order.In the prior art, because the SIP signaling is subject to UDP, therefore, but transmission package length can not surpass 1300 bytes, when the medium packet length of consulting surpasses 1300 bytes, the intercepted phenomenon of medium signaling packet can occur, and then also just can't successfully initiate the meeting control order of multimedia conferencing, cause the user can't use the multimedia conferencing function.And in the embodiment of the invention, sip terminal A utilizes the HTTP signaling can control order to Conf AS initiation, and HTTP is not limited to UDP, does not also just exist the medium packet length can not surpass the restriction of 1300 bytes, avoid occurring the intercepted phenomenon of medium signaling packet, make the multimedia conferencing function more stable.
Based on same inventive concept, the embodiment of the invention also provides a kind of conference applications server Conf AS, and concrete structure comprises as shown in Figure 7:
Receiving element 701 is used to receive the information of the invitation second sip terminal attending multimedia conference that first sip terminal sends, and multimedia conferencing is created by first sip terminal;
Transmitting element 702 is used for message request is sent to second sip terminal, and exhales the binding terminal of second sip terminal down;
In one embodiment, as shown in Figure 8, receiving element 701 can comprise:
Receive subelement 801, be used to receive the signaling of the establishment multimedia conferencing that first sip terminal initiates, and the media resource information of first sip terminal is sent to MRS, and the media resource information of MRS is sent to first sip terminal;
Confirm subelement 802, be used for when receiving first sip terminal and MRS, confirming to set up media channel between first sip terminal and MRS that multimedia conferencing is created successfully respectively to the affirmation information of the other side's media resource information.
In one embodiment, receiving subelement 801 specifically is used for: receive the signaling that first sip terminal utilizes the establishment multimedia conferencing of HTML (Hypertext Markup Language) HTTP initiation.
In one embodiment, notification unit 703 specifically is used for:
Receive 183 (Session Description Protocol SDP) signaling that the binding terminal sends, obtain the media information of binding terminal, and be sent to MRS by the media information of inviting Invite (SDP) signaling will bind terminal;
Receive MRS by 183 (SDP) signaling, obtain the media information of MRS;
Utilize the Prack signaling that the media information of MRS and the media information of binding terminal are confirmed in advance;
Reply ACK signaling and MRS affirmation signaling link negotiation result by 200Invite/;
Receive the ring signaling that the binding terminal is sent by 180 ring Ring signalings;
Utilize the Prack signaling that the ring signaling is confirmed in advance, and notify second sip terminal ringing condition of binding terminal;
Receive the 200Invite signaling of sending behind the binding terminal off-hook;
To binding terminal feeding back ACK signaling, determine to have set up media channel between binding terminal and MRS.
Based on same inventive concept, the embodiment of the invention also provides a kind of system of attending multimedia conference by SIP (Session Initiation Protocol) terminal, concrete structure comprises first sip terminal 901, conference applications server Conf AS 902, second sip terminal 903, Media Resource Server MRS 904 and binding terminal 905 as shown in Figure 9:
First sip terminal 901 is used for inviting second sip terminal, 903 attending multimedia conferences by Conf AS 902, and multimedia conferencing is created by first sip terminal 901;
Conf AS 902 is used for meeting invitation is sent to second sip terminal 903, and exhales the binding terminal 905 of second sip terminal down; And, notify second sip terminal 903 with the talking state of binding terminal 905;
Second sip terminal 903 is used to receive invitation, subscribes to and receive the meeting field information of multimedia conferencing, attending multimedia conference;
MRS 904, are used for setting up media channel by Conf AS 902 and binding terminal 905;
Binding terminal 905 is used to receive the following of Conf AS 902 and exhales, and sets up media channel by Conf AS 902 and MRS 904.
In one embodiment, structure as shown in Figure 9, first sip terminal 901 specifically is used for: with MRS904 through Conf AS 902 exchanges media resource information separately; When first sip terminal 901 was confirmed the other side's media resource information respectively with MRS 904,904 of first sip terminal 901 and MRS set up media channel, and multimedia conferencing is created successfully.
In one embodiment, first sip terminal 901 specifically is used for: utilize HTML (Hypertext Markup Language) HTTP to initiate to create the signaling of multimedia conferencing.
In one embodiment, the signaling of the establishment multimedia conferencing of first sip terminal, 901 uses comprises following any one or multinomial set: conference type, Session Topic, conference creation person, meeting time span, meeting number;
The media resource information of first sip terminal 901 and MRS 904 exchanges comprises following any one or multinomial set: media port, medium IP address, resource reservation situation.
In one embodiment, binding terminal 905 specifically is used for: receive following the exhaling of Conf AS 902, by 183 (Session Description Protocol SDP) signaling self media information is sent to Conf AS 902; And, send the ring signaling by 180 ring Ring signalings, and be sent to Conf AS 902; And, behind the off-hook, send the 200Invite signaling to Conf AS 902;
Conf AS 902 specifically is used for: exhale under binding terminal 905 is initiated, and be sent to MRS 904 by the media information of inviting Invite (SDP) signaling will bind terminal 905; And, utilize the Prack signaling that the media information of MRS 904 and the media information of binding terminal 905 are confirmed in advance; And, utilize the Prack signaling that the ring signaling is confirmed in advance, and notify second sip terminal 903 ringing condition of binding terminal 905; And, to binding terminal 905 feeding back ACK signalings;
MRS 904 specifically is used for: by 183 (SDP) signaling self media information is sent to ConfAS 902; And 902 of Conf AS reply the ACK signaling by 200Invite/ and confirm signaling link negotiation result.
In embodiments of the present invention, receive the information of the invitation second sip terminal attending multimedia conference of first sip terminal transmission, described multimedia conferencing is created by first sip terminal; Message request is sent to second sip terminal, and exhales the binding terminal of second sip terminal down; After binding terminal of exhaling and Media Resource Server MRS set up media channel, notify second sip terminal with the talking state of binding terminal under receiving; Receive the talking state of binding terminal at second sip terminal after, receive the subscription signaling of second sip terminal, the meeting field information of described multimedia conferencing is sent to second sip terminal the meeting field information of described multimedia conferencing.In embodiments of the present invention, for second sip terminal and binding terminal thereof, only need a cover SIP signaling, do not need two cover SIP signalings to call out second sip terminal and binding terminal thereof respectively, for the network element that relates in the IMS network, simplify handling process, shortened the flow process holding time, saved resource.And the network element that relates in the IMS network does not need corresponding two cover SIP signalings to make corresponding adjustment, equally can save ample resources yet.
Further, first sip terminal utilizes HTTP to initiate to create the signaling of multimedia conferencing and can control request, HTTP is not limited to UDP, just do not exist the medium packet length can not surpass the restriction of 1300 bytes yet, avoid occurring the intercepted phenomenon of medium signaling packet, make the multimedia conferencing function more stable.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (13)
1. the method for an attending multimedia conference by SIP (Session Initiation Protocol) terminal is characterized in that, comprising:
Receive the information of the invitation second sip terminal attending multimedia conference of first sip terminal transmission, described multimedia conferencing is created by first sip terminal;
Message request is sent to second sip terminal, and exhales the binding terminal of second sip terminal down;
After binding terminal of exhaling and Media Resource Server MRS set up media channel, notify second sip terminal with the talking state of binding terminal under receiving;
Receive the talking state of binding terminal at second sip terminal after, receive the subscription signaling of second sip terminal, the meeting field information of described multimedia conferencing is sent to second sip terminal the meeting field information of described multimedia conferencing.
2. the method for claim 1 is characterized in that, described multimedia conferencing is created by first sip terminal, specifically comprises:
Receive the signaling of the establishment multimedia conferencing of first sip terminal initiation, and the media resource information of first sip terminal is sent to MRS, and the media resource information of MRS is sent to first sip terminal;
When receiving first sip terminal and MRS respectively to the affirmation information of the other side's media resource information, to confirm to set up media channel between first sip terminal and MRS, described multimedia conferencing is created successfully.
3. method as claimed in claim 2 is characterized in that, receives the signaling of the establishment multimedia conferencing of first sip terminal initiation, specifically comprises:
Receive the signaling that first sip terminal utilizes the establishment multimedia conferencing of HTML (Hypertext Markup Language) HTTP initiation.
4. as claim 2 or 3 described methods, it is characterized in that the signaling of described establishment multimedia conferencing comprises following any one or multinomial set: conference type, Session Topic, conference creation person, meeting time span, meeting number;
Described media resource information comprises following any one or multinomial set: media port, medium IP address, resource reservation situation.
5. method as claimed in claim 1 or 2 is characterized in that, binding terminal and Media Resource Server MRS set up media channel, specifically comprise:
Receive 183 (Session Description Protocol SDP) signaling that the binding terminal sends, obtain the media information of binding terminal, and be sent to MRS by the media information of inviting Invite (SDP) signaling will bind terminal;
Receive MRS by 183 (SDP) signaling, obtain the media information of MRS;
Utilize the Prack signaling that the media information of MRS and the media information of binding terminal are confirmed in advance;
Reply ACK signaling and MRS affirmation signaling link negotiation result by 200Invite/;
Receive the ring signaling that the binding terminal is sent by 180 ring Ring signalings;
Utilize the Prack signaling that the ring signaling is confirmed in advance, and notify second sip terminal ringing condition of binding terminal;
Receive the 200Invite signaling of sending behind the binding terminal off-hook;
To binding terminal feeding back ACK signaling, determine to have set up media channel between binding terminal and MRS.
6. a conference applications server Conf AS is characterized in that, comprising:
Receiving element is used to receive the information of the invitation second sip terminal attending multimedia conference that first sip terminal sends, and described multimedia conferencing is created by first sip terminal;
Transmitting element is used for message request is sent to second sip terminal, and exhales the binding terminal of second sip terminal down;
Notification unit is used for notifying second sip terminal with the talking state of binding terminal after receiving the binding terminal of exhaling down and setting up media channel with Media Resource Server MRS;
Subscriber units is used for receiving the subscription signaling of second sip terminal to the meeting field information of described multimedia conferencing after second sip terminal receives the talking state of binding terminal, and the meeting field information of described multimedia conferencing is sent to second sip terminal.
7. conference applications server as claimed in claim 6 is characterized in that, described transmitting element comprises:
Receive subelement, be used to receive the signaling of the establishment multimedia conferencing that first sip terminal initiates, and the media resource information of first sip terminal is sent to MRS, and the media resource information of MRS is sent to first sip terminal;
Confirm subelement, be used for when receiving first sip terminal and MRS, confirming to set up media channel between first sip terminal and MRS that described multimedia conferencing is created successfully respectively to the affirmation information of the other side's media resource information.
8. conference applications server as claimed in claim 7 is characterized in that, described reception subelement specifically is used for: receive the signaling that first sip terminal utilizes the establishment multimedia conferencing of HTML (Hypertext Markup Language) HTTP initiation.
9. as claim 6 or 7 described conference applications servers, it is characterized in that described notification unit specifically is used for:
Receive 183 (Session Description Protocol SDP) signaling that the binding terminal sends, obtain the media information of binding terminal, and be sent to MRS by the media information of inviting Invite (SDP) signaling will bind terminal;
Receive MRS by 183 (SDP) signaling, obtain the media information of MRS;
Utilize the Prack signaling that the media information of MRS and the media information of binding terminal are confirmed in advance;
Reply ACK signaling and MRS affirmation signaling link negotiation result by 200Invite/;
Receive the ring signaling that the binding terminal is sent by 180 ring Ring signalings;
Utilize the Prack signaling that the ring signaling is confirmed in advance, and notify second sip terminal ringing condition of binding terminal;
Receive the 200Invite signaling of sending behind the binding terminal off-hook;
To binding terminal feeding back ACK signaling, determine to have set up media channel between binding terminal and MRS.
10. the system of an attending multimedia conference by SIP (Session Initiation Protocol) terminal is characterized in that, comprises first sip terminal, conference applications server Conf AS, second sip terminal, Media Resource Server MRS and binding terminal:
First sip terminal is used for inviting the second sip terminal attending multimedia conference by Conf AS, and described multimedia conferencing is created by first sip terminal;
Conf AS is used for meeting invitation is sent to second sip terminal, and exhales the binding terminal of second sip terminal down; And, notify second sip terminal with the talking state of binding terminal;
Second sip terminal is used to receive invitation, subscribes to and receive the meeting field information of described multimedia conferencing, participates in described multimedia conferencing;
MRS is used for setting up media channel by Conf AS and binding terminal;
The binding terminal is used to receive the following of Conf AS and exhales, and sets up media channel by Conf AS and MRS.
11. system as claimed in claim 10 is characterized in that, first sip terminal specifically is used for: with MRS through Conf AS exchange media resource information separately; When first sip terminal and MRS confirm the other side's media resource information respectively, set up media channel between first sip terminal and MRS, described multimedia conferencing is created successfully.
12. system as claimed in claim 11 is characterized in that, described first sip terminal specifically is used for: utilize HTML (Hypertext Markup Language) HTTP to initiate to create the signaling of multimedia conferencing.
13., it is characterized in that the binding terminal specifically is used for as claim 10 or 11 described systems: receive following the exhaling of Conf AS, self media information is sent to Conf AS by 183 (Session Description Protocol SDP) signaling; And, send the ring signaling by 180 ring Ring signalings, and be sent to ConfAS; And, behind the off-hook, send the 200Invite signaling to Conf AS;
Conf AS specifically is used for: exhale under the binding terminal is initiated, and be sent to MRS by the media information of inviting Invite (SDP) signaling will bind terminal; And, utilize the Prack signaling that the media information of MRS and the media information of binding terminal are confirmed in advance; And, utilize the Prack signaling that the ring signaling is confirmed in advance, and notify second sip terminal ringing condition of binding terminal; And, to binding terminal feeding back ACK signaling;
MRS specifically is used for: by 183 (SDP) signaling self media information is sent to Conf AS; And, reply the ACK signaling by 200Invite/ between Conf AS and confirm signaling link negotiation result.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201010235707.2A CN101895553B (en) | 2010-07-21 | 2010-07-21 | Method and system for attending multimedia conference by SIP (Session Initiation Protocol) terminal |
| PCT/CN2010/078798 WO2012009909A1 (en) | 2010-07-21 | 2010-11-16 | Method and system for session initiation protocol terminal to attend multi-media conference |
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| CN201010235707.2A CN101895553B (en) | 2010-07-21 | 2010-07-21 | Method and system for attending multimedia conference by SIP (Session Initiation Protocol) terminal |
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| CN101895553B CN101895553B (en) | 2015-04-01 |
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| WO (1) | WO2012009909A1 (en) |
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| WO2012009909A1 (en) | 2012-01-26 |
| CN101895553B (en) | 2015-04-01 |
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