CN100403795C - Method for realizing NGN network and mobile network video interconnection - Google Patents
Method for realizing NGN network and mobile network video interconnection Download PDFInfo
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Abstract
The present invention provides a method for realizing the video intercommunication of an NGN network and a mobile network. The video capability set information of a mobile video terminal is not processed by a mobile network side of the present invention, and the video capability set information of the mobile video terminal is directly transmitted to fixed conversation control equipment on an NGN side by a media gateway on the mobile network side, wherein a terminating function is provided by the fixed conversation control equipment of the NGN side for the video capability set of the mobile video terminal and the fixed video terminal to complete a negotiation process of the video capability of terminals. A media flow exchange transmission function is provided for the video media flow of the mobile video terminal and the fixed video terminal by the media gateway of the NGN side of the present invention. Thus the video intercommunication of the mobile network and the NGN network is achieved by less time cost and economic cost of network reform by the method for realizing the video intercommunication of an NGN network and a mobile network.
Description
Technical field
The present invention relates to the network communications technology field, be specifically related to the method for a kind of NGN of realization network and mobile network's video interconnection.
Background technology
At present, mobile video technology, especially 3G technology are ripe just gradually and move towards commercial, and while NGN (next generation network) technology is also ripe gradually and move towards commercial.
The basic demand that fixed video terminal in mobile video terminal among the mobile network such as video mobile phones etc. and the NGN network such as realization video interconnections such as H323 video terminal, Sip (initial session protocol) video terminal have become mobile network and NGN network interworking.
At present, video interconnection can't be realized between mobile network and the NGN network, promptly video interconnection can't be carried out between mobile video terminal and the fixed video terminal.
Summary of the invention
The invention provides the method for a kind of NGN of realization network and mobile network's video interconnection, can realize mobile video terminal and fixed video terminal mutual with less network rebuilding cost by this method.
For achieving the above object, a kind of method that realizes NGN network and mobile network's video interconnection provided by the invention comprises:
A, NGN side session control equipment obtain the video capability collection of mobile video terminal, fixed video terminal, and carry out video capability and consult;
B, described NGN side session control equipment transfer to NGN side media gateway, mobile video terminal and fixed video terminal respectively with the video capability negotiation result, and open the logic channel of mobile video terminal and fixed video terminal;
C, mobile video terminal, fixed video terminal transfer to video media stream NGN side media gateway respectively according to described video capability negotiation result, the described logic channel of opening;
The video media stream that d, described NGN side media gateway are come the mobile video terminal transmission according to described video capability negotiation result transfers to the fixed video terminal, and simultaneously, the video media stream that the fixed video terminal transmission is come transfers to the mobile video terminal.
Described step a further comprises:
A1, mobile video terminal transfer to NGN side media gateway with its video capability collection by mobile network's side media gateway, and transfer to NGN side session control equipment by described NGN side media gateway;
A2, fixed video terminal directly transfer to NGN side session control equipment with its video capability collection;
A3, NGN side session control equipment transmit the video capability collection that comes respectively according to fixed video terminal, mobile video terminal and carry out the video capability negotiation.
Described step a1 further comprises:
The mobile video terminal is carried on the H245 signaling with its video capability collection, and transfers to mobile network's side media gateway by the H223 multiplex stream;
Described mobile network's side media gateway directly transfers to described NGN side media gateway with described H223 multiplex stream;
Described NGN side media gateway is obtained the H245 signaling from described H223 multiplex stream, and transfers to NGN side session control equipment.
Described step a2 further comprises: the fixed video terminal is carried on its video capability collection in the signaling of H323 agreement or Session initiation Protocol and transfers to described NGN side session control equipment.
Described step b further comprises:
Described NGN side session control equipment is carried on described video capability negotiation result and transfers to NGN side media gateway in the media gateway controlling signaling;
Described NGN side session control equipment is carried on described video capability negotiation result and transfers to described NGN side media gateway in the H245 signaling, and by described NGN side media gateway this H245 signaling is transferred to the mobile video terminal by mobile network's side media gateway;
Described NGN side session control equipment is carried on described video capability negotiation result in H245 signaling or the Session initiation Protocol signaling and transfers to the fixed video terminal;
Described NGN side session control equipment is opened the logic channel of mobile video terminal and fixed video terminal.
Described media gateway controlling signaling comprises: MGCP signaling, H248 signaling.
Described video capability negotiation result is: the common public video capability of supporting of mobile video terminal and fixed video terminal, or mobile video terminal and fixed video terminal respectively with the common public video capability of supporting of NGN side media gateway.
Described step c further comprises:
Described mobile video terminal transfers to mobile network side media gateway with video media stream by the H223 multiplex stream according to the video capability negotiation result that receives, and transfers to NGN side media gateway by described mobile network's side media gateway;
Described fixed video terminal directly transfers to NGN side media gateway with video media stream by RTP stream according to the video capability negotiation result that receives.
Described steps d further comprises:
Described NGN side media gateway directly is converted to RTP stream according to the video media stream in the described video capability negotiation result described H223 multiplex stream that the transmission of mobile network's side media gateway is next, transfers to the fixed video terminal;
Simultaneously, video media stream during the RTP that described NGN side media gateway is come described fixed video terminal transmission according to described video capability negotiation result flows directly is converted to the H223 multiplex stream, transfer to mobile network's side media gateway, and transfer to the mobile video terminal by mobile network's side media gateway.
Described steps d further comprises:
Described NGN side media gateway is converted to RTP stream after carrying out encoding and decoding conversion according to the video media stream in the described video capability negotiation result described H223 multiplex stream that the transmission of mobile network's side media gateway is next again, transfers to the fixed video terminal;
Simultaneously, after video media stream during the RTP that described NGN side media gateway is come described fixed video terminal transmission according to described video capability negotiation result flows is carried out encoding and decoding conversion, be converted to the H223 multiplex stream again, transfer to mobile network's side media gateway, and transfer to the mobile video terminal by mobile network's side media gateway.
Description by technique scheme as can be known, mobile network's side of the present invention directly passes through fixedly session control equipment of NGN side with the video capability collection information of mobile video terminal as the H245 signaling of having carried the video capability collection, by the NGN side fixedly session control equipment provide the termination function for the video capability collection information of mobile video terminal, fixed video terminal, finish the video capability negotiations process of video terminal, mobile network's side needn't be handled video capability collection information; Encoding and decoding conversion is handled, the transmission process of video media stream translation by by NGN side media gateway the video media stream of mobile video terminal, fixed video terminal being carried out, and mobile network's side needn't be handled video media stream; That is that all right is ripe to the processing of video capability collection information, video media stream in mobile network's side, and the NGN side fixedly session control equipment under the mature and stable situation of the processing of video capability collection information, video media stream, the present invention is with less network rebuilding time cost, Financial cost, realize the video interconnection of mobile video terminal and fixed video terminal, thereby realized NGN network and mobile network's video interconnection.
Description of drawings
Fig. 1 is the method schematic diagram of realization NGN network of the present invention and mobile network's video interconnection;
Fig. 2 is the method flow diagram of realization NGN network of the present invention and mobile network's video interconnection.
Embodiment
Core of the present invention is: NGN side session control equipment obtains the mobile video terminal, the video capability collection of fixed video terminal, and carry out video capability and consult, described NGN side session control equipment transfers to NGN side media gateway respectively with described video capability negotiation result, mobile video terminal and fixed video terminal, and open the logic channel of mobile video terminal and fixed video terminal, the mobile video terminal, the fixed video terminal is according to described negotiation result, the described logic channel of opening transfers to video media stream NGN side media gateway respectively, the video media stream that described NGN side media gateway is come the mobile video terminal transmission according to described video capability negotiation result transfers to the fixed video terminal, simultaneously, the video media stream that the fixed video terminal transmission is come transfers to the mobile video terminal.
Method below in conjunction with 1 pair of realization NGN network of the present invention of accompanying drawing and mobile network's video interconnection describes.
Among Fig. 1, mobile network's side session control equipment comprises: switch, Softswitch etc., NGN side fixedly session control equipment comprises: switch, Softswitch etc.
In real network, mobile network's side media gateway is logically separated with NGN side media gateway, can unite two into one physically, also can separate.
The transmission channel that video media stream is arranged between mobile network's side media gateway and the NGN side media gateway, the physical carrier of this channel such as E1 circuit etc.The video media stream of transmission comprises H223 multiplex stream etc. in this connection.
Have the control link to be connected between mobile network's side session control equipment and the mobile network's side media gateway, this controls the physical carrier of link such as IP link etc.Upload defeated media gateway controlling signaling at this control link, the media gateway controlling signaling comprises: MGCP (MGCP) signaling, H248 signaling etc.
The NGN side fixedly has the control link to be connected between session control equipment and the NGN side media gateway, this controls the physical carrier of link such as IP link etc.Upload defeated media gateway controlling signaling at this control link, the media gateway controlling signaling comprises: MGCP, H248 signaling etc.
Mobile network's side session control equipment fixedly has signaling to be connected with the NGN side between the session control equipment, the physical carrier of this connection such as E1 circuit, IP link etc., its physical carrier specifically can according to the NGN side fixedly the support situation of session control equipment and mobile session control equipment select flexibly.The signaling of transmission comprises SIP (Session initiation Protocol) signaling, ISUP (ISDNYong Hubufen) signaling, BICC (with the calling control of bearer independent) signaling, SIP-T signaling etc. on this signaling connects.
Mainly between mobile video terminal and the fixed video terminal be connected by foundation such as mobile network, mobile network's side session control equipment, NGN side session control equipment, packet switching network calling.Use between owing to NGN side session control equipment and mobile network's side session control equipment when reason such as transmitting based on the ISUP signaling, can also call out by foundation such as mobile network, mobile network's side session control equipment, SGW, NGN side session control equipment, packet switching networks between mobile video terminal and the fixed video terminal and be connected, SGW has signaling to be connected with mobile network's side session control equipment, NGN side session control equipment respectively, to finish two signaling conversion transmission courses between the heterogeneous networks.
Set up between mobile video terminal and the fixed video terminal that to call out the process that is connected basic identical with the process that present existing foundation calling is connected, be not described in detail at this.
Mobile video terminal and fixed video terminal set up call out be connected after, mobile video terminal and fixed video terminal need be carried out the video capability negotiations process by NGN side session control equipment with its video capability collection message transmission separately to NGN side session control equipment.
The mobile video terminal collects information-bearing in the H245 signaling with its video capability, and by the transmission of H223 multiplex stream, this H223 multiplex stream transfers to mobile network's side media gateway by the mobile network, mobile network's side media gateway is not handled the H223 multiplex stream of the mobile video terminal of its reception, directly transfers to NGN side media gateway.
NGN side media gateway is isolated the H245 signaling from the H223 multiplex stream that the transmission of mobile network's side media gateway comes, and the H245 signaling is transferred to NGN side session control equipment.
The fixed video terminal can collect information-bearing in SIP signaling or H323 signaling with its video capability according to its concrete agreement of supporting, directly transfers to NGN side session control equipment.
NGN side session control equipment receives mobile video terminal, the next video capability collection information of fixed video terminal transmission, and provide the termination function, specifically comprise: NGN side session control equipment obtains the video capability collection of mobile video terminal, fixed video terminal from mobile video terminal, fixed video terminal transmission are come the information of H245 signaling, SIP signaling or H323 signaling bear, carry out the video capability negotiations process according to the above-mentioned video capability collection that obtains, to determine public video capability.
If the public video capability that NGN side session control equipment can find mobile video terminal, fixed video terminal all to support, then will be somebody's turn to do TCS (terminal capabilities set) transmission of messages of the common public video capability of supporting by the H245 signaling to NGN side media gateway, this TCS message be transferred to the mobile video terminal by mobile side media gateway, mobile network by NGN side media gateway.NGN side session control equipment also needs this common public video capability of supporting is transferred to the fixed video terminal, when the fixed video terminal is supported the H323 agreement, NGN side session control equipment can be carried on the public video capability of above-mentioned common support in the TCS message of H245 signaling, directly transfers to the fixed video terminal by packet switching network.When the fixed video terminal was supported SIP, NGN side session control equipment can be carried on the video capability of above-mentioned common support in the ACK message of SIP signaling, directly transfers to the fixed video terminal by packet switching network.
If NGN side session control equipment can not be concentrated from the video capability of the video capability collection of fixed video terminal, mobile video terminal and find fixed video terminal, the common video capability of supporting of mobile video terminal, then NGN side session control equipment need determine mobile video terminal, fixed video terminal respectively with the common public video capability of supporting of NGN side media gateway.NGN side session control equipment to NGN side media gateway, transfers to mobile video terminal with this TCS message by mobile side media gateway, mobile network by NGN side media gateway with TCS (terminal capabilities set) transmission of messages of the common public video capability of supporting of mobile video terminal and NGN side media gateway by the H245 signaling.NGN side session control equipment is carried on the common public video capability of supporting of fixed video terminal and NGN side media gateway in the ACK message of the TCS message of H245 signaling or SIP signaling, directly transfers to the fixed video terminal by packet switching network.
NGN side session control equipment also needs said fixing video terminal, the common public video capability of supporting of mobile video terminal, or mobile video terminal, fixed video terminal be carried on the common public video capability of supporting of NGN side media gateway respectively and transfer to NGN side media gateway in the media gateway controlling signaling, makes NGN side media gateway carry out transmission process to the video media stream of mobile video terminal, fixed video terminal transmission.
Above-mentioned media gateway controlling signaling comprises: MGCP signaling, H248 signaling etc.
After NGN side session control equipment transmits the video capability negotiation result respectively, open the logic channel of mobile video terminal and fixed video terminal, mobile video terminal and fixed video terminal can be carried out the transmission of video media stream by mobile network's side media gateway and NGN side media gateway.The transmission course of video media stream specifically comprises:
The mobile video terminal public video capability that transmission comes according to NGN side session control equipment, video media stream is transferred to the mobile network by the H223 multiplex stream, transfer to mobile network's side media gateway by the mobile network, mobile network's side media gateway is not handled this H223 multiplex stream, directly transfers to NGN side media gateway.
If the public video capability that NGN side media gateway receives is the common public video capability of supporting of fixed video terminal, mobile video terminal, then NGN side media gateway directly is converted to RTP (RTP) stream with the video media stream in the above-mentioned H223 multiplex stream, by packet switched network transmission to the fixed video terminal.
If the public video capability that NGN side media gateway receives be mobile video terminal, fixed video terminal respectively with the common public video capability of supporting of NGN side media gateway, then NGN side media gateway is obtained video media stream from the H223 multiplex stream, and after it is carried out encoding and decoding conversion, be converted to rtp streaming again, by packet switched network transmission to the fixed video terminal.
The fixed video terminal public video capability that transmission comes according to NGN side session control equipment transfers to packet switching network with video media stream by rtp streaming, directly transfers to NGN side media gateway.
If the public video capability that NGN side media gateway receives is the common public video capability of supporting of fixed video terminal, mobile video terminal, then NGN side media gateway directly is converted to the H223 multiplex stream with rtp streaming, transfers to the mobile video terminal by mobile network's side media gateway, mobile network.
If the public video capability that NGN side media gateway receives be mobile video terminal, fixed video terminal respectively with the common public video capability of supporting of NGN side media gateway, after then NGN side media gateway is carried out corresponding encoding and decoding conversion with rtp streaming, be converted to the H223 multiplex stream again, transfer to the mobile video terminal by mobile network's side media gateway, mobile network.
Thereby realized the video interconnection between mobile video terminal and the fixed video terminal.
Method below in conjunction with 2 pairs of realization NGN networks of the present invention of accompanying drawing and mobile network's video interconnection is elaborated.
Set the fixed video terminal and support the H324 agreement, the mobile video terminal is a calling terminal, the fixed video terminal is a called end, and needs between mobile video terminal and the fixed video terminal by SGW the network at mobile video terminal place and the network at fixed video terminal place to be carried out signaling conversion transmission.
As shown in Figure 2, in step 1, the mobile video terminal sends IAM (initial address message) to mobile network's side session control equipment.
To step 2, mobile network's side session control equipment is sent to SGW with the IAM message of its reception, and by SGW with this IAM transmission of messages to NGN side session control equipment.Simultaneously, mobile network's side session control equipment sends ADD (increase end points) message to mobile network's side media gateway.
To step 3, mobile network's side media gateway according to the ADD message of its reception with REPLY (response) transmission of messages of correspondence to mobile network's side session control equipment.
To step 4, NGN side session control equipment sends ADD message to NGN side media gateway after receiving IAM message.
To step 5, NGN side media gateway according to the ADD message of its reception with the REPLY transmission of messages of correspondence to NGN side session control equipment.
To step 6, after NGN side session control equipment receives REPLY message, send setup (foundation) message to corresponding fixed video terminal.
To step 7, the fixed video terminal receives setup (foundation) message, and sends Alterting (ring) message to NGN side session control equipment.NGN side session control equipment receives Alterting message, this message is transferred to SGW by ACM (Address Complete Message), and by SGW ACM is transferred to the mobile video terminal by mobile network's side session control equipment.
Behind the fixed video terminal off-hook, enter step 8.
In step 8, the fixed video terminal sends connect (connection) message to NGN side session control equipment.NGN side session control equipment receives connect message, with this message by ANM (replying) transmission of messages to SGW, and ANM is transferred to the mobile video terminal by mobile network's side session control equipment by SGW.
To step 9, mobile network's side session control equipment sends modify (modification) message behind mobile video terminal transmission ANM to mobile network's side media gateway.
To step 10, mobile network's side media gateway sends corresponding Reply message according to the modify message that receives to mobile network's side session control equipment.So far, set up between mobile video terminal and the fixed video terminal to call out and be connected.
To call out the process that connects identical with the process that existing foundation calling is connected owing to set up between mobile video terminal and the fixed video terminal, therefore, above-mentioned steps 1 to step 10 has been described between mobile video terminal and the fixed video terminal and has been set up the main process that is connected of calling out.
Between fixed video terminal and mobile video terminal, set up call out be connected after, enter step 11.
In step 11, the mobile video terminal collects information-bearing in the H245 signaling with its video capability, and transfers to mobile network's side media gateway by the H223 multiplex stream, transfers to NGN side session control equipment by mobile network's side media gateway by NGN side media gateway.The fixed video terminal is carried on its video capability information set and directly transfers to NGN side session control equipment in the H323 signaling.Carry out H245 by NGN side session control equipment according to the video capability collection of its reception and consult, after consulting successfully, enter step 12.
In step 12, the public video capability after NGN side session control equipment is consulted H245 is notified mobile video terminal, fixed video terminal respectively.
To step 13, NGN side session control equipment is by sending modify message to NGN side media gateway, with the public video capability notice NGN side media gateway after the H245 negotiation.
To step 14, NGN side media gateway sends Reply message to NGN side session control equipment after receiving this modify message.After NGN side session control equipment receives this Reply message, open the logic channel between mobile video terminal and the fixed video terminal.
To step 15, fixed video terminal and mobile video terminal begin to carry out video calling according to this logic channel, be specially: the mobile video terminal public video capability that transmission comes according to NGN side session control equipment, video media stream is transferred to mobile network's side media gateway by the H223 multiplex stream, mobile network's side media gateway directly transfers to NGN side media gateway with this H223 multiplex stream, by NGN side media gateway the Media Stream in the H223 multiplex stream directly is converted to rtp streaming, transfer to the fixed video terminal, or after by NGN side media gateway the video media stream in the H223 multiplex stream being carried out encoding and decoding conversion earlier, be converted to rtp streaming again and transfer to the fixed video terminal.The fixed video terminal public video capability that transmission comes according to NGN side session control equipment, video media stream is transferred to NGN side media gateway by rtp streaming, after by NGN side media gateway rtp streaming being converted to the H223 multiplex stream, transfer to the mobile video terminal by mobile network's side media gateway, or after by NGN side media gateway the video media stream in the rtp streaming being carried out encoding and decoding conversion earlier, be converted to the H223 multiplex stream again, transfer to the mobile video terminal by mobile network's side media gateway.
When the fixed video terminal need finish video calling, enter step 16.
In step 16, the fixed video terminal sends release (release) message to NGN side session control equipment, and call release connects.
To step 17, NGN side session control equipment sends sub (deletion end points) message to NGN side media gateway after receiving release message.
To step 18, NGN side media gateway transfers to mobile network's side session control equipment with release message by SGW.
To step 19, mobile network's side session control equipment sends sub (deletion end points) message to mobile network's side media gateway.
To step 20, mobile network's side media gateway transfers to mobile network's side session control equipment with the sub response message.
To step 21, mobile network's side session control equipment sends release message to the mobile video terminal, and call release connects.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of the present patent application file comprises these distortion and variation.
Claims (10)
1. a method that realizes NGN network and mobile network's video interconnection is characterized in that, comprising:
A, NGN side session control equipment obtain the video capability collection of mobile video terminal, fixed video terminal, and carry out video capability and consult;
B, described NGN side session control equipment transfer to NGN side media gateway, mobile video terminal and fixed video terminal respectively with the video capability negotiation result, and open the logic channel of mobile video terminal and fixed video terminal;
C, mobile video terminal, fixed video terminal transfer to video media stream NGN side media gateway respectively according to described video capability negotiation result, the described logic channel of opening;
The video media stream that d, described NGN side media gateway are come the mobile video terminal transmission according to described video capability negotiation result transfers to the fixed video terminal, and simultaneously, the video media stream that the fixed video terminal transmission is come transfers to the mobile video terminal.
2. a kind of method that realizes NGN network and mobile network's video interconnection as claimed in claim 1 is characterized in that described step a further comprises:
A1, mobile video terminal transfer to NGN side media gateway with its video capability collection by mobile network's side media gateway, and transfer to NGN side session control equipment by described NGN side media gateway;
A2, fixed video terminal directly transfer to NGN side session control equipment with its video capability collection;
A3, NGN side session control equipment transmit the video capability collection that comes respectively according to fixed video terminal, mobile video terminal and carry out the video capability negotiation.
3. a kind of method that realizes NGN network and mobile network's video interconnection as claimed in claim 2 is characterized in that described step a1 further comprises:
The mobile video terminal is carried on the H245 signaling with its video capability collection, and transfers to mobile network's side media gateway by the H223 multiplex stream;
Described mobile network's side media gateway directly transfers to described NGN side media gateway with described H223 multiplex stream;
Described NGN side media gateway is obtained the H245 signaling from described H223 multiplex stream, and transfers to NGN side session control equipment.
4. a kind of method that realizes NGN network and mobile network's video interconnection as claimed in claim 2 is characterized in that described step a2 further comprises:
The fixed video terminal is carried on its video capability collection in the signaling of H323 agreement or Session initiation Protocol and transfers to described NGN side session control equipment.
5. as claim 1,2,3 or 4 described a kind of methods that realize NGN network and mobile network's video interconnection, it is characterized in that described step b further comprises:
Described NGN side session control equipment is carried on described video capability negotiation result and transfers to NGN side media gateway in the media gateway controlling signaling;
Described NGN side session control equipment is carried on described video capability negotiation result and transfers to described NGN side media gateway in the H245 signaling, and by described NGN side media gateway this H245 signaling is transferred to the mobile video terminal by mobile network's side media gateway;
Described NGN side session control equipment is carried on described video capability negotiation result in H245 signaling or the Session initiation Protocol signaling and transfers to the fixed video terminal;
Described NGN side session control equipment is opened the logic channel of mobile video terminal and fixed video terminal.
6. a kind of method that realizes NGN network and mobile network's video interconnection as claimed in claim 5 is characterized in that described media gateway controlling signaling comprises: MGCP signaling, H248 signaling.
7. as claim 1,2,3 or 4 described a kind of methods that realize NGN network and mobile network's video interconnection, it is characterized in that, described video capability negotiation result is: the common public video capability of supporting of mobile video terminal and fixed video terminal, or mobile video terminal and fixed video terminal respectively with the common public video capability of supporting of NGN side media gateway.
8. as claim 1,2,3 or 4 described a kind of methods that realize NGN network and mobile network's video interconnection, it is characterized in that described step c further comprises:
Described mobile video terminal transfers to mobile network side media gateway with video media stream by the H223 multiplex stream according to the video capability negotiation result that receives, and transfers to NGN side media gateway by described mobile network's side media gateway;
Described fixed video terminal directly transfers to NGN side media gateway with video media stream by RTP stream according to the video capability negotiation result that receives.
9. a kind of method that realizes NGN network and mobile network's video interconnection as claimed in claim 8 is characterized in that described steps d further comprises:
Described NGN side media gateway directly is converted to RTP stream according to the video media stream in the described video capability negotiation result described H223 multiplex stream that the transmission of mobile network's side media gateway is next, transfers to the fixed video terminal;
Simultaneously, video media stream during the RTP that described NGN side media gateway is come described fixed video terminal transmission according to described video capability negotiation result flows directly is converted to the H223 multiplex stream, transfer to mobile network's side media gateway, and transfer to the mobile video terminal by mobile network's side media gateway.
10. a kind of method that realizes NGN network and mobile network's video interconnection as claimed in claim 8 is characterized in that described steps d further comprises:
Described NGN side media gateway is converted to RTP stream after carrying out encoding and decoding conversion according to the video media stream in the described video capability negotiation result described H223 multiplex stream that the transmission of mobile network's side media gateway is next again, transfers to the fixed video terminal;
Simultaneously, after video media stream during the RTP that described NGN side media gateway is come described fixed video terminal transmission according to described video capability negotiation result flows is carried out encoding and decoding conversion, be converted to the H223 multiplex stream again, transfer to mobile network's side media gateway, and transfer to the mobile video terminal by mobile network's side media gateway.
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| CN101453662B (en) * | 2007-12-03 | 2012-04-04 | 华为技术有限公司 | Stereo video communication terminal, system and method |
| CN101335676B (en) * | 2008-07-30 | 2011-09-21 | 中兴通讯股份有限公司 | Session control method based on mobile IP |
| CN101646055B (en) * | 2009-09-03 | 2013-10-16 | 中兴通讯股份有限公司 | Video media server for realizing video interworking gateway function and video interworking method |
| CN110557593A (en) * | 2018-06-01 | 2019-12-10 | 中兴通讯股份有限公司 | Media transmission method and H323-SIP gateway |
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| CN1360780A (en) * | 1999-07-12 | 2002-07-24 | 艾利森电话股份有限公司 | Method and system for exchanging information between multimedia network nodes |
| WO2004039097A1 (en) * | 2002-10-28 | 2004-05-06 | Huawei Technologies Co., Ltd | A communication method for calling on the circuit switched domain of core networks of gsm/wcdma |
| CN1558696A (en) * | 2004-01-19 | 2004-12-29 | Method of switching in fixed telephone and integrated network terminal by using mobile core network |
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| CN1801925A (en) | 2006-07-12 |
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