CN1852381A - Multimedia communication method - Google Patents
Multimedia communication method Download PDFInfo
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- CN1852381A CN1852381A CNA2006100210467A CN200610021046A CN1852381A CN 1852381 A CN1852381 A CN 1852381A CN A2006100210467 A CNA2006100210467 A CN A2006100210467A CN 200610021046 A CN200610021046 A CN 200610021046A CN 1852381 A CN1852381 A CN 1852381A
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Abstract
The invention includes following steps: (1) after starting up, terminal node requests to log in the registration server; (2) the registration server sends list information of super nodes to the terminal node; (3) after obtaining the list information, the terminal node stores the information and establishes connection with super node; (4) establishing connection with super node, terminal node sends TCP refresh information to super node on order to keep valid connection sostenuto. The invention discloses point-to-point multimedia communication method of taking full advantage of system resources at terminals so as to realize high usable multimedia communication in peer-to-peer network.
Description
Technical field
The present invention relates to the communication technology, particularly a kind of multimedia communication technology.
Background technology
H.323, the control channel/media channel of the agreement of voice-bearer and video on IP such as SIP passes through traditional NAT/FW equipment and public network carries out intercommunication, in traditional multimedia communications system, relating under the situation that private network NAT/FW passes through, often needing to dispose the media gateway special, that performance is powerful, that price is high is the medium forwarding servers.Along with being on the increase of client's number, because the concurrent number of terminals that the separate unit server can be supported (being that some terminals are carried out the medium forwarding in the same period promptly) is limited after all, continuous dilatation along with system, the local side investment also increases rapidly, system configuration also becomes increasingly complex, the required resource of media gateway also increases thereupon, and its resource finally becomes the development bottleneck of this centralized model.
On the other hand, along with the fast development of IT industry, the calculating of vast general network terminal node (being terminal equipment) and storage capacity and the network bandwidth also maintain sustained and rapid growth.The peer-to-peer network communication technology has been widely used in the download technology to Internet resources, downloads as BT.
Summary of the invention
Technical problem to be solved by this invention is: a kind of multimedia communication method is provided, can makes full use of the system resource of terminal, reduce the media gateway burden.
The technical solution adopted in the present invention is: multimedia communication method, adopt point-to-point communication between the network terminal, and may further comprise the steps:
A, terminal node start the back to the registrar request registration;
It is ordinary node or super node that b, registrar are specified this terminal node, and sends the super node list information to this terminal node; The super node list information comprises online super node information in the multimedia communications system;
C, terminal node store this information after obtaining the super node list information, and connect with super node in the super node tabulation;
D, terminal node and super node connect, and regularly send the TCP refreshing information to keep connecting continuous and effective to super node.
The method that terminal node and super node connect among the described step c is as follows:
After if terminal node is positioned at public network or does not have the limited NAT of UDP, then adopt UDP to connect test;
After if terminal node is positioned at the limited NAT of UDP, then adopt TCP to connect test;
After if terminal node is positioned at the limited and port restricted NAT of UDP, then adopting target port is that 80 TCP connects test.
The invention has the beneficial effects as follows: proposed a kind of point-to-point multimedia communication method, rationally utilized the abundant day by day terminal node resource of system resource, the peer-to-peer network multimedia communication that has realized having high availability.
Embodiment
Comprise 3 kinds of basic network node types in the multimedia communication method of the present invention, i.e. ordinary node, super node, registrar.Wherein ordinary node, super node all are user's terminal node.Numerous dispersions, the super node that dynamically updates have substituted the media gateway in traditional multimedia communications system, play a part transmitting signaling/medium.Whether registrar is unique central server that exists all the time in the system, and it mainly is the registration of leading subscriber, and select it to become super node according to user network type and log-on message decision.Usually, arbitrary public network IP address that has, and the node of enough CPU, internal memory and network bandwidth resources is arranged, can be chosen to be super node.
When terminal node starts at every turn, just carry out request registration to registrar;
After the registrar authentication was passed through, the notice terminal node succeeded in registration;
Terminal node is to the tabulation of the online super node of registrar acquisition request, and specifies and want the super node number that obtains, and generally this number is between 10-100;
Registrar returns the super node table data to terminal node, and informs the current online super node sum of whole multimedia communication system.
After terminal node obtains the super node tabulation, just it is inserted local global index's table, attempt connecting, successively connect by UDP, TCP, TCP (target port is 80) mode with super node, if failure then repeats this process, repeat at most to connect 4 times.
Terminal node is just attempted connecting with it after obtaining the super node tabulation from registrar, successively connects by UDP, TCP, TCP (target port is 80) mode, if failure then repeats this process, repeats at most to connect 4 times:
After if terminal node is positioned at public network or does not have the limited NAT of UDP, then adopt UDP to connect test;
After if terminal node is positioned at the limited NAT of UDP, then adopt TCP to connect test;
After if terminal node is positioned at the limited and port restricted NAT of UDP, then adopt TCP (target port is 80) to connect test, even because General N AT carries out port limit, still can open external 80 (http) port.
The process that terminal node is attempted and super node connects starts the back of reaching the standard grade at terminal node and just carries out automatically on the backstage, so that when terminal need be carried out multimedia communication, can accurately select available super node to help to carry out multi-medium data and transmit.
After the super node in terminal node and the local global index table connects, just start timer, every 1 minute or 5 fens its transmission of clockwise TCP refresh messages,, keep connection so that keep survival.
Global index's table of terminal node comprises buddy list, super node table, standby super node table information.
Buddy list is similar to the buddy list in the chat tool such as MSN/QQ, also is similar to the telephone directory of depositing in the mobile portable phone record.To being in the multimedia terminal number in the buddy list, can be directly to its foundation request etc. that sends message or send multi-media communication, and need not spend import its termination number a few times in second specially; Simultaneously, when the foundation request of message that receives its transmission or multi-media communication, also point out the other side's title or name simultaneously, make things convenient for local terminal to check and manage.
Setting up standby super node table, mainly is the continuous expansion of considering along with the whole multimedia communication system, and online super node must get more and more, and terminal node is difficult to and need not once obtains complete super node tabulation.Therefore, fetch the super node tabulation from registrar after, just insert the super node table of local global index table at every turn, then its traversal is connected test.Still can't connect if super node table traversal finished, just copy data in the current super node table to standby super node table, and then connect test to registrar request super node table and to its traversal, until finding available super node.
Generally the clauses and subclauses capacity with super node table and standby super node table in the local global index table is set at 10-100.
Select the UDP transmitting multimedia data between the terminal node as far as possible, in the time of behind and if only if a certain node the is positioned at limited NAT of UDP, just select the TCP transmitting multimedia data.
Claims (3)
1, multimedia communication method is characterized in that, adopts point-to-point communication between the network terminal, may further comprise the steps:
A, terminal node start the back to the registrar request registration;
It is ordinary node or super node that b, registrar are specified this terminal node, and sends the super node list information to this terminal node; The super node list information comprises online super node information in the multimedia communications system;
C, terminal node store this information after obtaining the super node list information, and connect with super node in the super node tabulation;
After d, terminal node and super node connect, regularly send the TCP refreshing information to keep connecting continuous and effective to super node.
2, multimedia communication method as claimed in claim 1 is characterized in that, the method that terminal node and super node connect among the described step c is as follows:
After if terminal node is positioned at public network or does not have the limited NAT of UDP, then adopt UDP to connect test;
After if terminal node is positioned at the limited NAT of UDP, then adopt TCP to connect test;
After if terminal node is positioned at the limited and port restricted NAT of UDP, then adopting target port is that 80 TCP connects test.
3, multimedia communication method as claimed in claim 1, it is characterized in that, after terminal node obtains the super node list information among the step c, deposit information in the global index table, described global index table includes the information of super node table information and standby super node table.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100210467A CN1852381B (en) | 2006-05-30 | 2006-05-30 | Multimedia communication method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2006100210467A CN1852381B (en) | 2006-05-30 | 2006-05-30 | Multimedia communication method |
Publications (2)
| Publication Number | Publication Date |
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| CN1852381A true CN1852381A (en) | 2006-10-25 |
| CN1852381B CN1852381B (en) | 2011-06-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2006100210467A Expired - Fee Related CN1852381B (en) | 2006-05-30 | 2006-05-30 | Multimedia communication method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101026543A (en) * | 2007-03-28 | 2007-08-29 | 华为技术有限公司 | Point-tor point P2P content sharing method and system |
| WO2009100671A1 (en) * | 2008-02-05 | 2009-08-20 | Huawei Technologies Co., Ltd. | A method and apparatus for maintaining route information |
| CN101170679B (en) * | 2006-10-27 | 2012-05-09 | 中兴通讯股份有限公司 | Method and system for realizing IPTV video monitoring service based on peer technology |
| CN103069782A (en) * | 2010-09-02 | 2013-04-24 | 斯凯普公司 | Communication system and method for communicating over a communication system |
| CN107147694A (en) * | 2017-03-30 | 2017-09-08 | 北京网康科技有限公司 | A kind of information processing method and device |
-
2006
- 2006-05-30 CN CN2006100210467A patent/CN1852381B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101170679B (en) * | 2006-10-27 | 2012-05-09 | 中兴通讯股份有限公司 | Method and system for realizing IPTV video monitoring service based on peer technology |
| CN101026543A (en) * | 2007-03-28 | 2007-08-29 | 华为技术有限公司 | Point-tor point P2P content sharing method and system |
| WO2008116401A1 (en) * | 2007-03-28 | 2008-10-02 | Huawei Technologies Co., Ltd. | A method, system and nodes for p2p content sharing |
| WO2009100671A1 (en) * | 2008-02-05 | 2009-08-20 | Huawei Technologies Co., Ltd. | A method and apparatus for maintaining route information |
| US8732298B2 (en) | 2008-02-05 | 2014-05-20 | Huawei Technologies Co., Ltd. | Method and apparatus for maintaining routing information |
| CN103069782A (en) * | 2010-09-02 | 2013-04-24 | 斯凯普公司 | Communication system and method for communicating over a communication system |
| CN103069782B (en) * | 2010-09-02 | 2016-11-09 | 斯凯普公司 | Communication system and the method for being communicated by this communication system |
| CN107147694A (en) * | 2017-03-30 | 2017-09-08 | 北京网康科技有限公司 | A kind of information processing method and device |
| CN107147694B (en) * | 2017-03-30 | 2020-06-16 | 北京网康科技有限公司 | Information processing method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1852381B (en) | 2011-06-22 |
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Granted publication date: 20110622 Termination date: 20210530 |