CN101047718B - System, method and server for implementing media consultation - Google Patents
System, method and server for implementing media consultation Download PDFInfo
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- CN101047718B CN101047718B CN2007101015682A CN200710101568A CN101047718B CN 101047718 B CN101047718 B CN 101047718B CN 2007101015682 A CN2007101015682 A CN 2007101015682A CN 200710101568 A CN200710101568 A CN 200710101568A CN 101047718 B CN101047718 B CN 101047718B
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Abstract
This invention discloses a method for realizing media negotiation including: a server obtains at least two negotiated SDP message bodies, each of which carries a medium message negotiating on a same network entity, and the server combines said two SDP message bodies to negotiate with the same network entity to get a negotiated SDP message body, which carries the medium message about negotiation on the same network entity. This invention also discloses a method for realizing medium negotiations and a system and servers corresponding to the two methods.
Description
Technical field
The present invention relates to the communications field, particularly two kinds of system, method and servers of realizing media negotiation.
Background technology
Before between network entity, setting up media channel and carrying out exchange of media, often need between network entity, carry out media negotiation in advance, promptly according to network entity media capability information separately, desired service quality, reserved resource etc. when consulting to carry out exchange of media.Such as, session initiation protocol (SIP, SessionInitiation Protocol) network, be to adopt sip message to carry out initially, manage and stop the network of various types of multimedia services, multimedia service is business such as IP phone, video session, in other words, the SIP network is exactly using SIP message generate, revise and the terminate network of the Multimedia session between one or more SIP entities.And the entity in the SIP network, be also referred to as the SIP entity, in sip message, carry Session Description Protocol (SDP, Session Description Protocol) message body, in order to describing the media capability information of each SIP entity, and utilize the SDP agreement provide/reply (OFFER/ANSWER) mechanism, realize the media negotiation between the SIP entity, here, the SDP agreement is an application layer protocol that is used to describe Multimedia session.
Only be example below with the audible ringing tone service, specify the method for present realization media negotiation, Fig. 1 is a method flow diagram of realizing the audible ringing tone service media negotiation in the prior art, wherein, the ring-back tone application server is used for managing and realization audible ringing tone service function, and be used for user terminal a (the UE a of caller, UserEquipment a), be used for called UE b and be used for Media Resource Server (MRS, Media Resource Server) that the audible ringing tone service media resource is controlled and handled for carrying out the network entity of media negotiation.As shown in Figure 1, UE a at first by carrying out media negotiation between ring-back tone application server and the MRS, realizes the exchange of media between MRS and the UEa, realizes that promptly MRS carries out the function of playing RBT to caller; Then, when UE b received calls, UE b carried out media negotiation one time again by ring-back tone application server and UE a, to realize the exchange of media between UE b and the UE a, promptly can converse normally.Media negotiation is realized by the message body of carrying the SDP agreement in sip message.Concrete steps are as follows:
Step 101-step 111 is for realizing the process of media negotiation between MRS and the UE a.
Step 101:UE a sends to the ring-back tone application server and invites (INVITE) message.
In this step, UE a is as the INVITE of caller in ring-back tone application server transmission sip request message, so that invite called UE b to converse by the ring-back tone application server, the ring-back tone application server here is the ring-back tone application server that UE b is belonged to.INVITE has carried SDP1 message body that describes UE a, gets access to SDP1 message body by this step ring-back tone application server.
SIP has two types message, promptly is dealt into the request message of server and from the response message of server to client machine from client computer.Wherein, Chang Yong request message comprises: INVITE, response confirmation (ACK), Temporary Response are confirmed (PRACK), are upgraded message such as (UPDATE).Response message has then comprised numeric response codes, comprises two types of Temporary Response and final responses, and Temporary Response is 1XX, and such as 183, and final response is 2XX, 3XX, such as 200OK.Every sip message all is made of initial row, SIP head and message body, and wherein, message body can be used to describe the session by initial, in this step, carries SDP message body in the sip message.
Step 102: the ring-back tone application server is transmitted INVITE to UE b.
Step 103:UE b sends 183 response messages to the ring-back tone application server.
In this step, in the message body of 183 response messages, carry SDP2 message body that describes called UE b.The ring-back tone application server gets access to SDP2 message body.Here, the 183rd, reliable Temporary Response.
Step 104: the ring-back tone application server sends PRACK message to UE b.
In this step, the ring-back tone application server sends PRACK message to called UE b after receiving 183 response messages, confirm to have received 183 response messages that called UE b is sent.
Step 105:UE b sends the 200OK response message to the ring-back tone application server.
The 200OK response message of PRACK message is to the ring-back tone application server in the UE b forwarding step 104.
Step 106: the ring-back tone application server sends INVITE to MRS.
In this step, the ring-back tone application server is created a new INVITE again and is sent to MRS, wherein carries SDP1 message body in the step 101 in the INVITE.
Step 107:MRS sends the 200OK response message to the ring-back tone application server.
The 200OK of INVITE responds the ring-back tone application server in the MRS forwarding step 106.Wherein carry SDP3 message body that describes MRS in the message of 200OK, get access to SDP3 message body by this step ring-back tone application server.
Step 108: the ring-back tone application server sends ACK message to MRS.
The ring-back tone application server is to the ACK message of MRS transmission corresponding to 200OK message in the step 106.
Step 109: the ring-back tone application server is transmitted 183 response messages to UE a.
The ring-back tone application server is transmitted 183 response messages in the step 103 to calling UE a.And, SDP2 message body entrained in 183 response messages in the step 103 is replaced with SDP3 message body that describes MRS in the step 107.
Step 110:UE a sends PRACK message to the ring-back tone application server.
UE a receives after the response of 183 in the step 109, sends PRACK message to the ring-back tone application server, and 183 responses that the ring-back tone application server is sent have been received in affirmation, have comprised SDP4 message body after consulting in this message.
Step 111: the ring-back tone application server sends the 200OK response message to UE a.
Step 112:UE b sends 180 response messages to the ring-back tone application server.
This 180 response message indication ring.
Step 113: the ring-back tone application server sends PRACK message to UE b.
If 180 in the step 112 is reliable Temporary Responses, the ring-back tone application server is received after 180 response messages in the step 112 so, must send PRACK message to UE b to 180 response messages.
Step 114:UE b sends the 200OK response message to the ring-back tone application server.
Step 115: the ring-back tone application server is transmitted 180 response messages to UE a.
Step 116:UE a sends PRACK message to the ring-back tone application server.
If 180 response messages in the step 115 are reliable Temporary Responses, UE a receives after 180 in the step 115 so, must send PRACK to the ring-back tone application server to 180.
Step 117: the ring-back tone application server sends the 200OK response message to UE a.
Step 118: the ring-back tone application server sends bulletin (INFO) message to MRS.
The ring-back tone application server sends INFO to MRS, and indication MRS begins playing RBT.Carried the specifying information of institute's playing RBT in the INFO information.
Step 119:MRS sends the 200OK response message to the ring-back tone application server.
After MRS receives INFO in the step 118, the beginning playing RBT, and send the 200OK response of INFO to the ring-back tone application server.
Step 120-step 126 is for realizing the process of media negotiation between UE b and the UE a.
Step 120:UE b sends the 200OK response message to the ring-back tone application server.
UE b receives calls, and the 200OK of INVITE responds the ring-back tone application server in the forwarding step 102.
Step 121: the ring-back tone application server sends UPDATE message to UE a.
The ring-back tone application server is received after the 200OK response message in the step 119, sends UPDATE message to UE a, has wherein comprised in the step 103 SDP2 message body of entrained description UE b in 183 response messages.
Step 122:UE a sends the 200OK response message to the ring-back tone application server.
UE a receives after the described UPDATE message of step 121, sends the 200OK response message to the ring-back tone application server.Comprised SDP5 message body after consulting in this message.
Step 123: the ring-back tone application server sends BYE message to MRS.
The ring-back tone application server sends BYE message to MRS, the session of end and MRS, and MRS stops the broadcast of ring-back tone.
Step 124: the ring-back tone application server is transmitted the 200OK response message to UE a.
200OK response message in the ring-back tone application server forwarding step 120 is to UE a.
Step 125:MRS sends the 200OK response message to the ring-back tone application server.
MRS stops the broadcast of ring-back tone after receiving the described BYE message of step 123, and transmission 200OK responds the ring-back tone application server.
Step 126:UE a sends ACK message to the ring-back tone application server.
UE a is to the ACK message of ring-back tone application server transmission at 200OK response message in the step 124.
Step 127: the ring-back tone application server sends ACK message to UE b.
The ring-back tone application server is to the ACK message of UE b transmission at 200OK response message in the step 119.After this step, UE a and UE b begin conversation.
Step 128:UE a sends BYE message by the ring-back tone application server to UE b.
UE a sends BYE message by the ring-back tone application server to UE b, to finish the conversation between UE a and UE b.
Step 129:UE b sends the 200OK response message by the ring-back tone application server to UE a.
As can be seen, in setting up the audible ringing tone service process, even UE is b, MRS carries out media negotiation to identical SIP entity UE a, UE a also must send the media information that is used for media negotiation by server to UE b and MRS respectively, that is to say, when a plurality of network entities are held consultation to same network entity, can only carry out media negotiation by server and same network entity respectively by a plurality of network entities.
Equally, when identical SIP entity carries out media negotiation to a plurality of networks, also need to carry out media negotiation with a plurality of network entities respectively by same network entity by server.
Therefore, adopt the method that realizes media negotiation at present, can only carry out media negotiation, promptly carry out media negotiation one time in the single network inter-entity, obtain the media negotiation result between a network entity and network entity, can't realize that a side is in many ways and in many ways to a side media negotiation.
Summary of the invention
In view of this, the embodiment of the invention is to provide a kind of method that realizes media negotiation, and this method can realize in many ways the media negotiation to a side.
The embodiment of the invention is to provide a kind of method that realizes media negotiation, and this method can realize that a side is in many ways media negotiation.
The embodiment of the invention is to provide a kind of system that realizes media negotiation, and this system can realize in many ways the media negotiation to a side.
The embodiment of the invention is to provide a kind of system that realizes media negotiation, and this system can realize that a side is in many ways media negotiation.
The embodiment of the invention is to provide a kind of server of realizing media negotiation, and this server can be realized in many ways the media negotiation to a side.
The embodiment of the invention is to provide a kind of server of realizing media negotiation, and this server can realize that a side is in many ways media negotiation.
For achieving the above object, the technical scheme of the embodiment of the invention specifically is achieved in that
A kind of method that realizes media negotiation, this method comprises:
Server obtains Session Description Protocol SDP message body of at least two negotiations, the SDP message body of each described negotiation is carried the media information that same network entity is held consultation, and the SDP message body of described negotiation is described part, timing information description part and session information description part by media information and formed;
Server merges SDP message body of described at least two negotiations, and the SDP message body that merges described at least two negotiations comprises: the media information that connects the SDP message body of each negotiation is described part, produces timing information description part and session information and describes part; Carry out media negotiation by SDP message body and the described same network entity that merges, SDP message body after obtaining consulting, the SDP message body after the described negotiation is carried the media information after the described same network entity negotiation; According to the mode of the SDP message body that merges described negotiation, decompose SDP message body after the described negotiation; According to the mode of the SDP message body of obtaining described negotiation, send SDP message body that decomposes.
A kind of method that realizes media negotiation, this method comprises:
Server obtains Session Description Protocol SDP message body of a negotiation, the SDP message body of described negotiation is carried the media information that at least two network entities are held consultation, and the SDP message body of described negotiation is described part, timing information description part and session information description part by media information and formed;
Server decomposes SDP message body of described negotiation, the SDP message body of the described negotiation of described decomposition comprises: the media information that extracts from the SDP message body of described negotiation in the SDP message body of each decomposition is described part, the timing information in the SDP message body of described negotiation is described part and session information describe that part is described partly as the timing information in the SDP message body of each decomposition and session information is described part;
SDP message body and described at least two network entities by at least two decomposition carry out media negotiation, obtain SDP message body after at least two negotiations, the media information after the SDP message body after each described negotiation is carried a network entity in described at least two network entities consulted;
Server is according to the mode of the SDP message body of decomposing described negotiation, merges SDP message body after described at least two negotiations, according to the mode of the SDP message body of obtaining described negotiation, sends SDP message body after the merging.
A kind of system that realizes media negotiation, this system comprises: the server and first network entity;
Described server, be used to obtain Session Description Protocol SDP message body of at least two negotiations, the SDP message body of each described negotiation is carried the media information that described first network entity is held consultation, and the SDP message body of described negotiation is described part, timing information description part and session information description part by media information and formed; The media information that connects the SDP message body of each negotiation is described part; Produce timing information description part and session information and describe part to merge SDP message body of described at least two negotiations, carry out media negotiation by SDP message body and described first network entity that merges, SDP message body after obtaining consulting, the SDP message body after the described negotiation is carried the media information after described first network entity negotiation; According to the mode of the SDP message body that merges described negotiation, decompose SDP message body after the described negotiation; According to the mode of the SDP message body of obtaining described negotiation, send SDP message body that decomposes;
Described first network entity is used for carrying out media negotiation with server.
A kind of system that realizes media negotiation, this system comprises: server and at least two network entities;
Described server, be used to obtain Session Description Protocol SDP message body, described SDP message body is carried the media information that at least two network entities are held consultation, and the SDP message body of described negotiation is described part, timing information description part and session information description part by media information and formed; The media information that extracts from the SDP message body of described negotiation in the SDP message body of each decomposition is described part, the timing information in the SDP message body of described negotiation is described part and session information describe part and describe part and session information description partly to decompose described SDP message body as the timing information in the SDP message body of each decomposition; SDP message body and described at least two network entities by at least two decomposition carry out media negotiation, obtain SDP message body after at least two negotiations, the SDP message body after the described negotiation carry with described at least two network entities in the media information of a network entity after consulting; According to the mode of the SDP message body of decomposing described negotiation, merges SDP message body after described at least two negotiations, according to the mode of the SDP message body of obtaining described negotiation, send SDP message body after the merging;
Described at least two network entities are used for carrying out media negotiation with server.
A kind of server of realizing media negotiation, this server comprises: acquisition module, merging module, negotiation module and decomposing module;
Described acquisition module, be used to obtain Session Description Protocol SDP message body of at least two negotiations, each described SDP message body is carried the media information that same network entity is held consultation, the SDP message body of described negotiation is described part, timing information by media information and is described part and session information and describe part and form, and the SDP message body of described at least two negotiations is sent to the merging module;
Described merging module, the media information that is used to connect the SDP message body of each negotiation is described part, produce timing information and describe SDP message body that part and session information are described at least two negotiations that part receives with merging, the SDP message body of merging is sent to negotiation module;
Described negotiation module, be used for holding consultation by the SDP message body and the described same network entity of the merging that receives, SDP message body after obtaining consulting, the SDP message body after the described negotiation is carried the media information after the described same network entity negotiation;
Described decomposing module is used for the mode according to the SDP message body that merges described negotiation, decomposes SDP message body after the described negotiation, according to the mode of the SDP message body of obtaining described negotiation, sends SDP message body that decomposes.
A kind of server of realizing media negotiation, this server comprises: acquisition module, decomposing module, negotiation module and merging module;
Described acquisition module, be used to obtain Session Description Protocol SDP message body of a negotiation, the SDP message body of described negotiation is carried the media information that at least two network entities are held consultation, the SDP message body of described negotiation is described part, timing information by media information and is described part and session information and describe part and form, and the SDP message body of described negotiation is sent to decomposing module;
Described decomposing module, be used for describing part from the media information that the SDP message body of described negotiation extracts the SDP message body of each decomposition, timing information in the SDP message body of described negotiation is described part and session information describe part and describe SDP message body of the described negotiation that part and session information description partly receive with decomposition as the timing information in the SDP message body of each decomposition, the SDP message body of at least two decomposition that decomposition is obtained sends to negotiation module;
Described negotiation module, be used for carrying out media negotiation by SDP message body and described at least two network entities of at least two decomposition receiving, obtain SDP message body after at least two negotiations, the media information after the SDP message body after each described negotiation is carried a network entity in described at least two network entities consulted;
Described merging module is used for the mode according to the SDP message body of decomposing described negotiation, merges SDP message body after described at least two negotiations, according to the mode of the SDP message body of obtaining described negotiation, sends SDP message body after the merging.
As seen from the above technical solution, the method system and the server of the realization media negotiation that the embodiment of the invention provides, decompose or merge SDP message body by server, and utilize the SDP message body after decomposing or merging to carry out media negotiation, thereby make the server to hold consultation to a plurality of network entities or as carrying out media negotiation with same network entity in many ways, realized that a side is in many ways or in many ways to a side media negotiation as a side.
Description of drawings
Fig. 1 is a method flow diagram of realizing the audible ringing tone service media negotiation in the prior art.
The system schematic of the realization media negotiation that provides in the first embodiment of the invention is provided Fig. 2.
The system schematic of the realization media negotiation that provides in the second embodiment of the invention is provided Fig. 3.
The realization media consulation method schematic diagram of Fig. 4 for providing in the third embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in further detail.
In the following embodiment of the invention, server can be used as in many ways and holds consultation with same network entity, also can be used as a side and a plurality of network entity is held consultation.
When the server conduct was held consultation with same network entity in many ways, server obtained Session Description Protocol SDP message body of at least two negotiations, and the SDP message body of each described negotiation is carried the media information that same network entity is held consultation; Server merges SDP message body of described at least two negotiations; Carry out media negotiation by SDP message body and the described same network entity that merges, SDP message body after obtaining consulting, the SDP message body after the described negotiation is carried the media information after the described same network entity negotiation.
When server was held consultation as a side and a plurality of network entity, server obtained SDP message body of a negotiation, and the SDP message body of described negotiation is carried the media information that at least two network entities are held consultation; Server decomposes SDP message body of described negotiation; SDP message body and described at least two network entities by at least two decomposition carry out media negotiation, obtain SDP message body after at least two negotiations, the media information after the SDP message body after each described negotiation is carried at least one network entity in described at least two network entities consulted.The present invention is described in detail below to lift three specific embodiments:
Embodiment one:
The system schematic of the realization media negotiation that provides in the first embodiment of the invention is provided Fig. 2.First embodiment of the invention has provided and has realized a side to the system of media negotiation in many ways, and this system comprises: the server and first network entity;
Server obtains SDP message body of at least two negotiations, the SDP message body of each negotiation has all been carried the media information that first network entity is held consultation, SDP message body that the SDP message body of at least two negotiations that merging is obtained obtains merging, and carry out media negotiation by the SDP message body and first network entity that merges, SDP message body after obtaining consulting, the SDP message body after this negotiation is carried the media information after the negotiation of first network entity; First network entity then is used for carrying out media negotiation with server.
Referring to Fig. 2, present embodiment is for to be distinguished with the following examples, and server table is shown server first module 210 as in many ways, and in the present embodiment, as a side network entity is user agent (UA, User Agent) in the SIP network, is expressed as UA X230.
Hypothesis server first module 210 is obtained SDP message body of negotiation in the present embodiment, promptly from SDPx1, SDPx2......SDPxn message body of UA1, UA2......UAm, server first module 210 is merged into SDP X message body with SDPx1, the SDPx2......SDPxn message body of obtaining, and utilize SDP X message body and same network entity UA X230 to hold consultation, SDP message body after obtaining consulting, i.e. SDP Y message body.
Server first module 210 can be according to the method that merges SDP X message body in the present embodiment, SDP Y message body is decomposed into SDPy1, SDPy2......SDPyn, where necessary, according to the mode of the SDP message body of obtaining described negotiation, send to decompose the SDPy1 that obtains, among the SDPy2......SDPyn any one or all to corresponding network entity UA1, UA2......UAm.As shown in Figure 2, server first module 210 comprises acquisition module 211, merges module 212 and negotiation module 213;
SDP message body and UA X230 that negotiation module 213 utilization receives merging hold consultation, SDP message body after obtaining consulting, i.e. and SDP Y message body, SDP Y message body is carried the media information after the UA X230 negotiation.
Server first module 210 can also comprise: decomposing module 214;
Decomposing module 214 is according to the mode of the message body that merges SDPx1, SDPx2......SDPxn, decompose SDPy1, SDPy2......SDPyn message body after consulting, according to the mode of obtaining SDPx1, SDPx2......SDPxn message body, any one among SDP message body SDPy1, the SDPy2......SDPyn that send to decompose or all to corresponding network entity 220.
UA entity in the present embodiment can be network entities such as terminal, Media Resource Server, acting server.Certainly, m in the present embodiment and n can equate also can be unequal, such as, the network entity with two kinds of network functions can send SDP message body of two negotiations to server, and at this moment m is not equal to n.
As seen from the above-described embodiment, server first module in the embodiment of the invention is by merging SDP message body from least two network entities, and utilize the SDP message body and the same network entity that merge to hold consultation, can obtain the negotiation result of a plurality of network entities and same network entity simultaneously, and can avoid same network entity repeatedly to be undertaken alternately by server and the opposing party's network entity, can improve the problem that medium are lost, improve user experience.
Embodiment two:
The system schematic of the realization media negotiation that provides in the second embodiment of the invention is provided Fig. 3.Second embodiment of the invention provides and realizes a side to system in many ways, and referring to Fig. 3, this system comprises: server and at least two network entities;
Server obtains SDP message body of a negotiation, the SDP message body of this negotiation is carried the media information that at least two network entities are held consultation, server decomposes SDP message body that obtains, obtain SDP message body of at least two decomposition, and utilize the SDP message body of at least two decomposition and at least two network entities to carry out media negotiation, obtain SDP message body after at least two negotiations, the media information after the SDP message body after each is consulted is carried a network entity in described at least two network entities consulted; At least two network entities are used for carrying out media negotiation with server.
Referring to Fig. 3, it in the present embodiment server that is different among first embodiment, server table is shown server second unit 310 as a side, and is m UA entity in the SIP network, be expressed as UA1320, UA2320......UAm320 as in many ways at least two network entities;
In the present embodiment, the SDP message body that server second unit 310 obtains negotiation is SDP U message body from UA X330, carried the media information that UA1320, UA2320......UAm320 network entity are held consultation in this message body, SDP U message body is decomposed into SDPu1, SDPu2......SDPun, utilize server by utilizing SDPu1, SDPu2......SDPun and UA1320, UA2320......UAm320 to hold consultation, SDPv1, SDPv2......SDPvn after obtaining consulting.
UAX330 among Fig. 3 can be after server second unit 310 merges SDPu1, SDPu2......SDPun message body; Where necessary, the SDP message body that merges is sent to UA X330.As shown in Figure 3, server second unit 310 also comprises: acquisition module 311, decomposing module 312 and negotiation module 313;
The SDP message body that acquisition module 311 obtains a negotiation is SDP U message body, and SDP U message body is carried the media information that UA1320, UA2320......UAm320 are held consultation, and SDP U message body is sent to decomposing module 312;
Decomposing module 312 is decomposed SDP U message body that receives, and SDPu1, SDPu2......SDPun message body that decomposition is obtained send to negotiation module 313;
Server second unit 310 can also comprise: merge module 314;
Merge the mode of module 314 according to the SDP message body of decomposing described negotiation, merge SDPv1, SDPv2......SDPvn message body, and, the SDP message body SDP V message body of the merging that obtains is sent to same network entity UA X330 according to the mode of the SDP message body of obtaining described negotiation.
UA entity in the present embodiment can be network entities such as terminal, Media Resource Server, acting server.M in the present embodiment and n can equate equally also can be unequal.
As seen from the above-described embodiment, server Unit second in the embodiment of the invention is by decomposing SDP message body from same network entity, and utilize the SDP message body and at least one network entity that decompose to hold consultation, can avoid same network entity repeatedly to be undertaken alternately by server and the opposing party's network entity, can improve the problem that medium are lost, improve user experience.
Embodiment three:
The realization media consulation method schematic diagram of Fig. 4 for providing in the third embodiment of the invention.Present embodiment is example with the audible ringing tone service, because the server in the present embodiment was both also held consultation as a side as holding consultation in many ways, thereby the ring-back tone application server among Fig. 4 comprises server first module among first embodiment and the server Unit second among second embodiment, and concrete steps are described as follows:
Step 401-step 413 is carried out the process of media negotiation in many ways with UE a for the server conduct.
Step 401:UE a sends INVITE to the ring-back tone application server.
In the present embodiment, UE a sends the INVITE of Session Initiation Protocol to the ring-back tone application server as caller, so that invite called UE b to carry out call request by the ring-back tone application server, the ring-back tone application server here is the ring-back tone application server that UE b is belonged to.Carried SDP1 message body that describes UE a in the message body of INVITE, in the present embodiment, SDP1 thes contents are as follows:
v＝0
o＝APP1.0?10000?10000?IN?IP4?10.164.104.58
s＝-
c＝IN?IP4?10.164.104.58
t＝00
m＝audio?10500?RTP/AVP?97
a＝curr:qos?local?none
a＝curr:qos?remote?none
a＝des:qos?optional?local?sendrecv
a＝des:qos?optional?remote?sendrecv
a＝rtpmap:97?AMR/8000
a＝fmtp:97?octet-align＝1
a＝sendrecv
m＝video?10510?RTP/AVP?34
b＝AS:512
a＝curr:qos?local?none
a＝curr:qos?remote?none
a＝des:qos?optional?local?sendrecv
a＝des:qos?optional?remote?sendrecv
a＝rtpmap:34?H263/90000
a＝fmtp:34?QCIF＝1?CIF＝4?MaxBR＝3200
a＝sendrecv
In the present embodiment, be carried at the audio frequency media that media information in the SDP1 message body comprises that UE a is used to consult and the media information of video media, each media information is capable and m capable capable composition of the capable a of all properties that these medium are described below by m.
Usually, SDP message body comprises three grades of information description parts, is respectively that session information is described part, timing information describes part and media information is described part.Wherein, v is capable to describe part to c behavior session information, o wherein is capable, and the session information that belongs to is described part, expression SDP negotiation promoter's the information and the identifier of session, comprise 6 parameters, be followed successively by user's name, session id, session version, network type, the descriptor of address style, conversation establishing address; T behavior timing information is described part, and be that media information is described part with the lower part, wherein the capable media information that belongs to of m is described part, the presentation medium descriptor, comprise 4 parameters, be expressed as the descriptor of medium type, port numbers, host-host protocol, concrete media formats successively; C capable can session information and media information partly occur, the expression link information comprises 3 parameters, is followed successively by network type, address style and link address descriptor.In the present embodiment, c is capable, and the session information that appears at is described part.
Step 402: the ring-back tone application server is transmitted INVITE to UE b.
In the present embodiment, the ring-back tone application server is transmitted INVITE to UE b, and this message has been carried SDP1 message body that describes UE a.
Step 403:UE b sends 183 response messages to the ring-back tone application server.
Receive the INVITE of ring-back tone application server forwarding at UE b after, send 183 response messages to the ring-back tone application server.Here, the 183rd, reliable Temporary Response.Carried SDP2 message body that describes UE b at 183 response messages, in the present embodiment, SDP2 thes contents are as follows:
v＝0
o＝APP1.020004?20004?IN?IP4?10.164.104.99
s＝-
c＝IN?IP4?10.164.104.99
t＝00
m＝audio?10600RTP/AVP?97
a＝curr?:qos?local?none
a＝curr:qos?remote?none
a＝des:qos?optional?local?sendrecv
a＝des:qos?optional?remote?sendrecv
a＝rtpmap:97?AMR/8000
a＝fmtp:97?octet-align＝1
a＝sendrecv
m＝video?10610?RTP/AVP?34
b＝AS:512
a＝curr:qos?local?none
a＝curr:qos?remote?none
a＝des:qos?optional?local?sendrecv
a＝des:qos?optional?remote?sendrecv
a＝rtpmap:34?H263/90000
a＝fmtp:34?QCIF＝1?CIF＝4?MaxBR＝3200
a＝sendrecv
In the present embodiment, the media information that is carried in the SDP2 message body comprises audio frequency media and the media information of video media, the i.e. capable information of the capable a of all properties capable and respective media of m in the SDP2 message body that UE b is used to consult.
Step 404: the ring-back tone application server is transmitted 183 response messages to UE a.
In the present embodiment, carried SDP2 message body that describes UE b at 183 response messages.
Step 405:UE a sends PRACK message to the ring-back tone application server.
In the present embodiment, after UE a receives 183 responses, send PRACK message to the ring-back tone application server, this step is used to consult once more, and in PRACK message, carry SDP3 message body that is used to consult, can not carry SDP3 message body if do not need to consult once more.The present embodiment hypothesis is not consulted once more.
Step 406: the ring-back tone application server is transmitted PRACK message to UE b.
Step 407:UE b sends the 200OK response message to the ring-back tone application server.
In the present embodiment, after UE b receives PRACK message, send 200OK and respond the ring-back tone application server.If in step 405, carried SDP3 message body that is used for consulting once more in the PRACK message, the corresponding SDP4 that carries after the negotiation in the 200OK response in this step then.Owing to consult once more, thereby there is not SDP4 message body in the present embodiment.
Step 408: the ring-back tone application server is transmitted the 200OK response message to UE a.
Step 409: the ring-back tone application server sends INVITE to MRS.
In the present embodiment, the ring-back tone application server is created a new INVITE again, does not carry SDP information in this message.
Step 410:MRS sends the 200OK response message to the ring-back tone application server.
In the present embodiment, after MRS receives INVITE in the step 409, send 200OK and respond the ring-back tone application server.Carry SDP5 message body that describes oneself in this response, in the present embodiment, SDP5 thes contents are as follows:
v＝0
o＝-4654229?4654229?IN?IP4ims_mpc
s＝media?server?session
c＝IN?IP4?10.164.71.233
t＝00
m＝audio?36060?RTP/AVP?97
a＝rtpmap:97?AMR/8000
a＝fmtp:97?octet-align＝1；mode-set＝0，1，2，3，4，5，6，7
a＝sendonly
m＝video?32840?RTP/AVP?34
b＝AS:384
a＝rtpmap:34?H263/90000
a＝fmtp:34?CIF＝4
a＝sendonly
In the present embodiment, the media information that is carried in the SDP5 message body comprises audio frequency media and the media information of video media, the i.e. capable information of the capable a of all properties capable and respective media of m in the SDP5 message body that MRS is used to consult.
Step 411: the ring-back tone application server sends UPDATE message to UE a.
After the ring-back tone application server receives that the 200OK in the step 410 responds, send UPDATE message to UE a, carry SDP6 message body in the UPDATE message, SDP6 obtains after SDP2 in the step 403 and the SDP5 in the step 410 merge, if carry SDP4 message body in the PRACK message in step 407, then SDP6 obtains after SDP4 in the step 407 and the SDP5 in the step 410 merge.The merging method is: describe the part appearance if link information c is capable at session information, m provisional capital during each media information is described partly so can use this c capable, be about to the capable media information that copies to of c and describe part, in the present embodiment with the capable capable following delegation of m that copies to of c, there is the c of oneself capable if m is capable, so just adopts the c of oneself capable.
C is capable in the present embodiment describes the part appearance at session information, and, because SDP2 message body is to consult for the second time, and SDP5 message body is to consult for the first time, to SDP2 and the merging of SDP5 message body the time, media information in the SDP5 message body need be described part and be connected to SDP2 message body, media information is described the back of part, and the session version number of SDP2 message body when consulting the first time that increases storage.Concrete merging method is: with the c among the SDP5 capable be put into respectively each m capable in, the details of each medium in the part then the media information among the SDP5 are described, promptly m all properties capable and these medium of description are capable, be put into SDP2 message body media information and describe the back of part, and the session version of the o in the SDP2 message body of storage in capable number increased by 1, expression is revised SDP2 message body and is obtained.
At this moment according to SDP2 in the present embodiment and SDP5 message body content, the theing contents are as follows of the SDP6 message body after obtaining merging:
v＝0
o＝APP1.0?20004?20005?IN?IP4?10.164.104.99
s＝-
t＝00
m＝audio?10600?RTP/AVP?97
c＝IN?IP4?10164.104.99
a＝curr:qos?local?none
a＝curr:qos?remote?none
a＝des:qos?optional?local?sendrecv
a＝des:qos?optional?remote?sendrecv
a＝rtpmap:97?AMR/8000
a＝fmtp:97?octet-align＝1
a＝sendrecv
m＝video?10610?RTP/AVP?34
c＝IN?IP4?10.164.104.99
b＝AS:512
a＝curr:qos?local?none
a＝curr:qos?remote?none
a＝des:qos?optional?local?sendrecv
a＝des:qos?optional?remote?sendrecv
a＝rtpmap:34?H263/90000
a＝fmtp:34?QCIF＝1?CIF＝4?MaxBR＝3200
a＝sendrecv
m＝audio?36060?RTP/AVP?97
c＝IN?IP4?10.164.71.233
a＝rtpmap:97?AMR/8000
a＝fmtp:97?octet-align＝1；mode-set＝0，1，2，3，4，5，6，7
a＝sendonly
m＝video?32840?RTP/AVP?34
c＝IN?IP4?10.164.71.233
b＝AS:384
a＝rtpmap:34?H263/90000
a＝fmtp:34?CIF＝4
a＝sendonly
In the present embodiment, be carried at the media information of audio frequency media that media information in the SDP6 message body comprises that MRS is used to consult and video media and audio frequency media that UE b is used to consult and the media information of video media, be the media information that two media informations in front are used to consult corresponding to UE b, and the media information that two media informations in back are used to consult corresponding to MRS.
If the negotiation number of times of SDP2 in the present embodiment and SDP5 message body is identical, consult then random order for the first time to connect SDP2 and SD5 message body if all be.If once held consultation, then with used SDP2 and SD5 message body of being linked in sequence once.
If the negotiation once more that present embodiment adopts has obtained SDP4 message body, then this step should change into by SDP4 and SDP5 message and merging.
Step 412:UE a sends the 200OK response message to the ring-back tone application server.
In the present embodiment, after the UPDATE message of UE a in receiving step 411, send 200OK and respond the ring-back tone application server, wherein carried SDP7 message body after consulting.Specifically, SDP7 be UE a for replying that SDP6 made, just on the basis of UE a and UE b negotiation result, also increased the result that UE a and MRS consult, in this implementation column, SDP7 thes contents are as follows:
v＝0
o＝APP1.0?10000?10001?IN?IP4?10.164.104.58
s＝-
c＝IN?IP4?10.164.104.58
t＝00
m＝audio?10500?RTP/AVP?97
a＝curr:qos?local?none
a＝curr:qos?remote?none
a＝des:qos?optional?local?sendrecv
a＝des:qos?optional?remote?sendrecv
a＝rtpmap:97?AMR/8000
a＝fmtp:97?octet-align＝1
a＝sendrecv
m＝video?10510?RTP/AVP?34
b＝AS:512
a＝curr:qos?local?none
a＝curr:qos?remote?none
a＝des:qos?optional?local?sendrecv
a＝des:qos?optional?remote?sendrecv
a＝rtpmap:34?H263/90000
a＝fmtp:34?QCIF＝1?CIF＝4?MaxBR＝3200
a＝sendrecv
m＝audio?10600?RTP/AVP?97
a＝rtpmap:97?AMR/8000
a＝fmtp:97?octet-align＝1；mode-set＝0，1，2，3，4，5，6，7
a＝sendonly
m＝video?10610?RTP/AVP?34
b＝AS:384
a＝rtpmap:34?H263/90000
a＝fmtp:34?CIF＝4
a＝sendonly
In the present embodiment, be carried at media information in the SDP7 message body and comprise the audio frequency media after the media information of audio frequency media after UE a and UE b consult and video media and UE a and MRS are consulted and the media information of video media, media information after to be two media informations in front corresponding to UE a and UE b consult, and the media information of two media informations in back after consulting corresponding to UE a and MRS.
Step 413: the ring-back tone application server sends ACK message to MRS.
In the present embodiment, the ring-back tone application server is in receiving step 412 after the 200OK response, SDP7 entrained in this response message is decomposed, in the present embodiment, the ring-back tone application server is according to the merging method, corresponding media resource information with SDP5 among the SDP7 is extracted, as SDP8.And send in the ACK message to MRS at the ring-back tone application server and to carry SDP8 message body.This ACK message is the affirmation message at 200OK response message in the step 410.Since SDP to provide with answer-mode be to concern one to one, so SDP8 is replying of SDP5 part among corresponding and the SDP7, in the present embodiment, SDP8 thes contents are as follows:
v＝0
o＝APP1.0?10000?10001?IN?IP4?10.164.104.58
s＝-
c＝IN?IP4?10.164.104.58
t＝00
m＝audio?10600?RTP/AVP?97
a＝rtpmap:97?AMR/8000
a＝fmtp:97?octet-align＝1；mode-set＝0，1，2，3，4，5，6，7
a＝sendonly
m＝video?10610?RTP/AVP?34
b＝AS:384
a＝rtpmap:34?H263/90000
a＝fmtp:34?CIF＝4
a＝sendonly
Where necessary, also can adopt identical method to extract corresponding to the media information after the negotiation of UE b.
Step 414 is processes of resource reservation to step 420, and this process is an optional process, and this process server carries out media negotiation as a side and UE b and MRS.
Step 414:UE a sends UPDATE message to the ring-back tone application server.
In the present embodiment, UE a sends the UPDATE message that comprises the resource reservation successful information and arrives the ring-back tone application server, and this resource reservation successful information is included in the SDP9 message body.
Step 415: the ring-back tone application server sends UPDATE message to UE b.
In the present embodiment, after the ring-back tone application server is received UPDATE message, SDP9 message body is decomposed into 2 parts according to the method that merges, is respectively: describe the SDP10 of UE b and the SDP11 of description MRS.The ring-back tone application server sends UPDATE message to UE b, carries SDP10 message body in this UPDATE message.The method of decomposing is: the media information that extracts from SDP9 message body in SDP10 and the SDP11 message body is described part; Timing information in the SDP9 message body is described part and session information describe that part is described partly as the timing information in SDP10 and the SDP11 message body and session information is described part.Extracting method is: during according to merging SDP message body media information is described the order of connection that part adopts, extract.
Step 416: the ring-back tone application server sends to MRS and invites (REINVITE) message once more.
In the present embodiment, the ring-back tone application server sends REINVITE message to MRS, and REINVITE has carried SDP11 message body in the step 415.
Step 417:MRS sends the 200OK response message to the ring-back tone application server.
In the present embodiment, after MRS receives REINVITE message, send 200OK and respond the ring-back tone application server.Wherein, carried SDP12 message body of the resource obligate information that comprises MRS in this message.
Step 418: the ring-back tone application server sends ACK message to MRS.
In the present embodiment, after the ring-back tone application server is received the 200OK response message, send ACK message to MRS.
Step 419:UE b sends the 200OK response message to the ring-back tone application server.
In the present embodiment, after UE b receives UPDATE message in the step 415, send 200OK and respond the ring-back tone application server, wherein, carried SDP13 message body of the resource obligate information that comprises UE b in this 200OK response message.
Step 420: the ring-back tone application server sends the 200OK response message to UE a.
In the present embodiment, the ring-back tone application server is merged into SDP14 according to the merging method in the step 11 with SDP13 and SDP12, and in the 200OK response message that sends to UE a, carry SDP14 message body that comprises resource obligate information at UPDATE message in the step 14.
Step 421-step 439 is the exchange of media process.
Step 421-step 428 is identical with step 112-119 of the prior art, does not give unnecessary details one by one here.
Step 429:UE b sends the 200OK response message to the ring-back tone application server.
In the present embodiment, after UE b accepted session, the 200OK that sends at INVITE in the step 2 responded the ring-back tone application server.
Step 430: the ring-back tone application server is transmitted the 200OK response message to UE a.
Step 431: the ring-back tone application server sends BYE message to MRS.
In the present embodiment, the ring-back tone application server sends BYE message to MRS, finishes the broadcast of ring-back tone.
Step 432:MRS sends the 200OK response message to the ring-back tone application server.
Step 433:UE a sends ACK message to the ring-back tone application server.
Step 434 ring-back tone application server is transmitted ACK message to UE b.
Step 435 ring-back tone application server sends REINVITE message to UE a.
In the present embodiment, the ring-back tone application server sends REINVITE message to UE a, carries SDP15 message body in this message, and the medium that the effect of SDP15 is closed between UE a and the MRS connect, and just, the port that the m between UE a and the MRS is capable is changed to 0.
Step 436:UE a sends the 200OK response message to the ring-back tone application server.
In the present embodiment, after UE a receives REINVITE message, send the 200OK response message, wherein carry SDP16 message body to the ring-back tone application server.Media port corresponding to MRS among the SDP16 is changed to 0.
Step 437: the ring-back tone application server sends ACK message to UE a.
In the present embodiment, after the ring-back tone application server is received 200OK response message in the step 436, send ACK message to UE a.
Step 438 step 439 is identical with step 128-129 of the prior art, does not give unnecessary details one by one here.
As seen from the above-described embodiment, the embodiment of the invention is in setting up the audible ringing tone service process, because UE a and MRS, UE b media negotiation carry out simultaneously, thereby avoided in the prior art when UE b answers conversation, because UE a does not set up medium with UE b and is connected, and the medium that cause are lost problem, can improve user experience.
Merge in the embodiment of the invention SDP message body method can also for: after describing the part order of connection at the media information in each SDP message body, corresponding medium property mark is set, then when decomposing SDP message body, go out SDP message body of each decomposition according to the medium property marker extraction that is provided with.
The embodiment of the invention is applicable to the communications field of adopting SDP message body to hold consultation.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.All any modifications of being done within the spirit and principles in the present invention, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a method that realizes media negotiation is characterized in that, this method comprises:
Server obtains Session Description Protocol SDP message body of at least two negotiations, the SDP message body of each described negotiation is carried the media information that same network entity is held consultation, and the SDP message body of described negotiation is described part, timing information description part and session information description part by media information and formed;
Server merges SDP message body of described at least two negotiations, and the SDP message body that merges described at least two negotiations comprises: the media information that connects the SDP message body of each negotiation is described part, produces timing information description part and session information and describes part; Carry out media negotiation by SDP message body and the described same network entity that merges, SDP message body after obtaining consulting, the SDP message body after the described negotiation is carried the media information after the described same network entity negotiation;
Server is according to the mode of the SDP message body that merges described negotiation, decomposes SDP message body after the described negotiation; According to the mode of the SDP message body of obtaining described negotiation, send SDP message body that decomposes.
2. the method for realization media negotiation according to claim 1 is characterized in that, the media information of the SDP message body of described each negotiation of connection is described part and comprised:
The media information that connects the SDP message body of each negotiation of consulting for the first time with random order is described part, and/or part is described with the media information that the order of connection that once adopted connects the SDP message body of each negotiation with identical negotiation number of times, and/or to consult the descending of number of times, the media information that connects the SDP message body of each negotiation is described part.
3. the method for realization media negotiation according to claim 1, it is characterized in that, described connection media information further comprises before describing part: the link information that the SDP message body session information that will appear at each negotiation is described part copies to the media information of the SDP message body of each negotiation and describes part.
4. according to the method for claim 1,2 or 3 described realization media negotiations, it is characterized in that described generation timing information describes part and session information description part comprises:
Determine that link information occurs in session information description part, if the negotiation number of times difference of the SDP message body of two negotiations, number increase by 1 of session version in the SDP message body that the negotiation number of times of storage is more, and after deleting the link information of session information description part in this SDP message body, part is described as the session information of the SDP message body that merges; If the negotiation number of times of the SDP message body of two negotiations is identical, if all be to consult for the first time, then random order connects SDP message body of two negotiations, if once held consultation, then uses SDP message body of used two negotiations that are linked in sequence once;
Describe part when identical at the timing information of the SDP of two negotiations message body, the timing information that this is identical is described part and is described part as the timing information of the SDP message body that merges.
5. the method for realization media negotiation according to claim 1 is characterized in that, described method of carrying out media negotiation by the SDP message body and the described same network entity of merging comprises:
Server sends SDP message body that merges to described same network entity;
Server obtains SDP message body after the negotiation that described same network entity sends, and the SDP message body after the described negotiation is carried the media information after the negotiation that described same network entity produces according to the SDP message body that merges.
6. the method for realization media negotiation according to claim 1 is characterized in that, the SDP message body after the described negotiation is described part, timing information description part and session information description part by media information and formed;
SDP message body after the described negotiation of described decomposition comprises: when merging the SDP message body of described at least two negotiations, the media information that connects in the SDP message body of each negotiation is described the order of connection that part is adopted, the media information that extracts the SDP message body after described negotiation in the SDP message body of each decomposition is described part, perhaps describe the medium property mark of the part order of connection according to what be provided with at each media information, the media information that extracts in the SDP message body of each decomposition is described part; Timing information in the SDP message body after the described negotiation is described part and session information describe that part is described partly as the timing information in the SDP message body of each decomposition and session information is described part.
7. a method that realizes media negotiation is characterized in that, this method comprises:
Server obtains Session Description Protocol SDP message body of a negotiation, the SDP message body of described negotiation is carried the media information that at least two network entities are held consultation, and the SDP message body of described negotiation is described part, timing information description part and session information description part by media information and formed;
Server decomposes SDP message body of described negotiation, the SDP message body of the described negotiation of described decomposition comprises: the media information that extracts from the SDP message body of described negotiation in the SDP message body of each decomposition is described part, the timing information in the SDP message body of described negotiation is described part and session information describe that part is described partly as the timing information in the SDP message body of each decomposition and session information is described part;
SDP message body and described at least two network entities by at least two decomposition carry out media negotiation, obtain SDP message body after at least two negotiations, the media information after the SDP message body after each described negotiation is carried a network entity in described at least two network entities consulted;
Server is according to the mode of the SDP message body of decomposing described negotiation, merges SDP message body after described at least two negotiations, according to the mode of the SDP message body of obtaining described negotiation, sends SDP message body after the merging.
8. the method for realization media negotiation according to claim 7, it is characterized in that, the described media information that extracts is described part and is comprised: when producing the SDP message body of consulting, each media information is described the order of connection that part is adopted, perhaps describe the medium property mark of the part order of connection according to what be provided with at each media information, the media information that extracts in the SDP message body of each decomposition is described part.
9. the method for realization media negotiation according to claim 7 is characterized in that, described method of carrying out media negotiation by SDP message body and described at least two network entities of at least two decomposition comprises:
Server sends SDP message body of at least two decomposition at least to described two network entities;
Server obtains SDP message body after at least two negotiations that described at least two network entities send, and the SDP message body after each described negotiation is carried the media information after the negotiation that a network entity in described at least two network entities produces according to the SDP message body of decomposing.
10. a system that realizes media negotiation is characterized in that, this system comprises: the server and first network entity;
Described server, be used to obtain Session Description Protocol SDP message body of at least two negotiations, the SDP message body of each described negotiation is carried the media information that described first network entity is held consultation, and the SDP message body of described negotiation is described part, timing information description part and session information description part by media information and formed; The media information that connects the SDP message body of each negotiation is described part; Produce timing information description part and session information and describe part to merge SDP message body of described at least two negotiations, carry out media negotiation by SDP message body and described first network entity that merges, SDP message body after obtaining consulting, the SDP message body after the described negotiation is carried the media information after described first network entity negotiation; According to the mode of the SDP message body that merges described negotiation, decompose SDP message body after the described negotiation; According to the mode of the SDP message body of obtaining described negotiation, send SDP message body that decomposes;
Described first network entity is used for carrying out media negotiation with server.
11. a system that realizes media negotiation is characterized in that, this system comprises: server and at least two network entities;
Described server, be used to obtain Session Description Protocol SDP message body, described SDP message body is carried the media information that at least two network entities are held consultation, and the SDP message body of described negotiation is described part, timing information description part and session information description part by media information and formed; The media information that extracts from the SDP message body of described negotiation in the SDP message body of each decomposition is described part, the timing information in the SDP message body of described negotiation is described part and session information describe part and describe part and session information description partly to decompose described SDP message body as the timing information in the SDP message body of each decomposition; SDP message body and described at least two network entities by at least two decomposition carry out media negotiation, obtain SDP message body after at least two negotiations, the SDP message body after the described negotiation carry with described at least two network entities in the media information of a network entity after consulting; According to the mode of the SDP message body of decomposing described negotiation, merges SDP message body after described at least two negotiations, according to the mode of the SDP message body of obtaining described negotiation, send SDP message body after the merging;
Described at least two network entities are used for carrying out media negotiation with server.
12. a server of realizing media negotiation is characterized in that, this server comprises: acquisition module, merging module, negotiation module and decomposing module;
Described acquisition module, be used to obtain Session Description Protocol SDP message body of at least two negotiations, each described SDP message body is carried the media information that same network entity is held consultation, the SDP message body of described negotiation is described part, timing information by media information and is described part and session information and describe part and form, and the SDP message body of described at least two negotiations is sent to the merging module;
Described merging module, the media information that is used to connect the SDP message body of each negotiation is described part, produce timing information and describe SDP message body that part and session information are described at least two negotiations that part receives with merging, the SDP message body of merging is sent to negotiation module;
Described negotiation module, be used for holding consultation by the SDP message body and the described same network entity of the merging that receives, SDP message body after obtaining consulting, the SDP message body after the described negotiation is carried the media information after the described same network entity negotiation;
Described decomposing module is used for the mode according to the SDP message body that merges described negotiation, decomposes SDP message body after the described negotiation, according to the mode of the SDP message body of obtaining described negotiation, sends SDP message body that decomposes.
13. a server of realizing media negotiation is characterized in that, this server comprises: acquisition module, decomposing module, negotiation module and merging module;
Described acquisition module, be used to obtain Session Description Protocol SDP message body of a negotiation, the SDP message body of described negotiation is carried the media information that at least two network entities are held consultation, the SDP message body of described negotiation is described part, timing information by media information and is described part and session information and describe part and form, and the SDP message body of described negotiation is sent to decomposing module;
Described decomposing module, be used for describing part from the media information that the SDP message body of described negotiation extracts the SDP message body of each decomposition, timing information in the SDP message body of described negotiation is described part and session information describe part and describe SDP message body of the described negotiation that part and session information description partly receive with decomposition as the timing information in the SDP message body of each decomposition, the SDP message body of at least two decomposition that decomposition is obtained sends to negotiation module;
Described negotiation module, be used for carrying out media negotiation by SDP message body and described at least two network entities of at least two decomposition receiving, obtain SDP message body after at least two negotiations, the media information after the SDP message body after each described negotiation is carried a network entity in described at least two network entities consulted;
Described merging module is used for the mode according to the SDP message body of decomposing described negotiation, merges SDP message body after described at least two negotiations, according to the mode of the SDP message body of obtaining described negotiation, sends SDP message body after the merging.
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| CN2007101015682A CN101047718B (en) | 2007-04-30 | 2007-04-30 | System, method and server for implementing media consultation |
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| CN2007101015682A CN101047718B (en) | 2007-04-30 | 2007-04-30 | System, method and server for implementing media consultation |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003065680A1 (en) * | 2002-01-31 | 2003-08-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for providing multiple sdp media flows in a single pop context |
| WO2006011770A1 (en) * | 2004-07-30 | 2006-02-02 | Samsung Electronics Co., Ltd | Method and system for merging multiple push-to-talk over cellular phone |
| CN1816134A (en) * | 2005-02-06 | 2006-08-09 | 中兴通讯股份有限公司 | Multi-spot video conference system and media processing method |
| CN1852358A (en) * | 2005-07-01 | 2006-10-25 | 华为技术有限公司 | Method for controlling business multiple fore ward-converting nested calling |
-
2007
- 2007-04-30 CN CN2007101015682A patent/CN101047718B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003065680A1 (en) * | 2002-01-31 | 2003-08-07 | Telefonaktiebolaget Lm Ericsson (Publ) | Method for providing multiple sdp media flows in a single pop context |
| WO2006011770A1 (en) * | 2004-07-30 | 2006-02-02 | Samsung Electronics Co., Ltd | Method and system for merging multiple push-to-talk over cellular phone |
| CN1816134A (en) * | 2005-02-06 | 2006-08-09 | 中兴通讯股份有限公司 | Multi-spot video conference system and media processing method |
| CN1852358A (en) * | 2005-07-01 | 2006-10-25 | 华为技术有限公司 | Method for controlling business multiple fore ward-converting nested calling |
Non-Patent Citations (1)
| Title |
|---|
| M. Handley.SDP: Session Description Protocol.RFC2327.1998,1-42. * |
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