CN1859339B - Communication system and method for realizing IP cross-domain inter communication by edge media gateway - Google Patents
Communication system and method for realizing IP cross-domain inter communication by edge media gateway Download PDFInfo
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Abstract
The present invention discloses through edge media gateway realizing IP cross domain intercommunication system. Said system includes adjacent heterogenous or homogeneity IP domain, each IP domain including media gateway controller used for call control; gateway used for media bearing; using single edge media gateway in adjacent heterogenous or homogeneity IP domain realizing cross domain intercommunication. The present invention also provides realizing IP cross domain intercommunication method; when different domain media calling media gateway communicate with called media gateway, calling media gateway makes calling junction and media stream establishment between edge media gateway and called media gateway under controlling by respective media gateway controller; calling media gateway and called media gateway to make cross-domain communication based on established media stream. The present invention can realize two different IP network communications through single edge media gateway.
Description
Technical field
The present invention relates to a kind of network communications technology, relate in particular to a kind of communication system and method that realizes the IP cross-domain inter communication by edge media gateway.
Background technology
As shown in Figure 1, MGC (Media Gateway Controller) and MG (media gateway) are two key members among the NGN (next generation network).MGC is responsible for CCF, and MG is responsible for the service bearer function, realize to call out separating of control plane and service bearer plane by this, thus abundant shared network resource, and simplified device upgrade and professional the expansion, greatly reduce development and maintenance cost.
In order to make MG and MGC collaborative work, between MGC and MG, need to use MGCP.MGCP is the main agreement of communicating by letter between MG and the MGC, and H.248/MeGaCo at present widely used have and two kinds of agreements of MGCP.
Under the control of MGC, set up RTP (RTP) Media Stream between MG and the MG usually and communicate.
MG can possess two functions because of network site of living in difference, and the one, as UNI (User Network Interface) carrying media stream in single IP territory, also claim common MG, for example intercommunication in the same IP network of single operator; The 2nd, stride IP territory carrying media stream as NNI (Network-Node Interface), also claim edge MG or IP-IP MG, for example intercommunication between the different IP networks of different operators, perhaps intercommunication between the different IP networks of single operator, typical between enterprise network and the core net.
At present, have many different IP network, the Media Stream in these different IP networks may have different building mechanisms, as its IP address subnet difference, IPv4 dock with v6, medium code decode algorithm difference or the like.Along with the development of business, press for the Media Stream intercommunication that makes in these different IP networks.
Summary of the invention
At the above-mentioned defective of prior art, the purpose of this invention is to provide a kind of communication system and method by edge media gateway realization IP cross-domain inter communication, can realize the communication issue of different IP networks.
The present invention is achieved through the following technical solutions, the invention provides a kind of communication system that realizes the IP cross-domain inter communication by edge media gateway, described system comprises: adjacent heterogeneous or homogeneity IP territory, each IP territory comprises: Media Gateway Controller, be used for calling out control, media gateway is used for media bearer; Edge media gateway, it belongs in one of them the network of adjacent heterogeneous or homogeneity IP territory, is used for being connected in series the Media Stream of adjacent networks media gateway, and the media gateway in the adjacent networks realizes cross-domain inter communication based on described Media Stream; Described Media Gateway Controller is issued edge media gateway with IP domain information under IP domain information under the caller media gateway and the called media gateway; Described edge media gateway obtains the caller media gateway by Media Gateway Controller and is provided with and called media gateway setting, and described edge media gateway is created to the Media Stream of caller media gateway according to IP domain information, the setting of caller media gateway and called media gateway setting under IP domain information, the called media gateway under the described caller media gateway and arrives the Media Stream of called media gateway.
The present invention also provides a kind of communication means of realizing the IP cross-domain inter communication by edge media gateway, the basic thought of described method is: when caller media gateway in same territory and called media gateway need not communicate, the caller media gateway is carried out call proceeding and Media Stream establishment by between single edge media gateway and called media gateway under caller network media gate controller and the control of called network Media Gateway Controller; Carry out cross-domain communication based on the Media Stream of creating between caller media gateway and called media gateway; Described caller media gateway is controlled by described caller network media gate controller, described called media gateway is controlled by described called network Media Gateway Controller, and described edge media gateway is by described caller network media gate controller or the control of called network Media Gateway Controller; Described Media Gateway Controller is issued edge media gateway with IP domain information under IP domain information under the caller media gateway and the called media gateway; Described edge media gateway obtains the caller media gateway by Media Gateway Controller and is provided with and called media gateway setting, and described edge media gateway is created to the Media Stream of caller media gateway according to IP domain information, the setting of caller media gateway and called media gateway setting under IP domain information, the called media gateway under the described caller media gateway and arrives the Media Stream of called media gateway.
Described method comprises:
A, the request of making a call of caller media gateway, and described call request is transmitted to the called network Media Gateway Controller by caller network media gate controller, give called media gateway by called network Media Gateway Controller forwarded call request;
B, called media gateway are admitted call request, then under the control of Media Gateway Controller, caller network media gate controller and the called network Media Gateway Controller of controlling edge media gateway, by creating the Media Stream between caller media gateway, edge media gateway and the called media gateway, called media gateway and caller media gateway are led to cross-domain communication based on the Media Stream of creating.
Described steps A further comprises: the called party information that Media Gateway Controller comprises according to call request is transmitted this call request.
Described step B also comprises: do not admit call request when called media gateway, finish this calling.
The Media Gateway Controller of described responsible edge media gateway is that this edge media gateway is striden one of them Media Gateway Controller of adjacent IP network.
Described step B further comprises:
The Media Gateway Controller of B1, responsible edge media gateway is created to edge media gateway indication edge media gateway and is divided the Media Stream that is clipped to caller media gateway and called media gateway;
B2, edge media gateway are transmitted to caller media gateway and called media gateway respectively by Media Gateway Controller then with oneself dividing the setting of the Media Stream that is clipped to caller media gateway and called media gateway to report the Media Gateway Controller of being responsible for edge media gateway;
B3, caller media gateway and called media gateway are provided with the realization cross-domain communication according to resulting edge media gateway to the Media Stream of caller media gateway and called media gateway.
According to the present invention, can realize the communication of two different IP networks by single edge media gateway.
Description of drawings
Fig. 1 shows the networking schematic diagram of single network of next generation network;
Fig. 2 shows networking schematic diagram of the present invention;
Fig. 3 shows communication flow diagram of the present invention.
Embodiment
Understand and realization the present invention the existing embodiments of the invention of describing in conjunction with the accompanying drawings for the ease of persons skilled in the art.
For for the common MG of UNI (User Network Interface), when MGC indicates this MG to create the Media Stream of TDM-RTP (time division multiplexing-RTP), usually need provide the parameter such as RTP medium code decode algorithm, packaging time length of IP side, and RTP address, Media Stream opposite end and port (if existing words), then by this MG free suitable Media Stream local terminal RTP address and port.For for the edge MG of NNI (Network-Node Interface), when MGC indicates this MG to create the RTP-RTP Media Stream, except above-mentioned information, also need to provide corresponding IP domain information at common MG.These information all will be carried by MGCP.
According to the present invention, Fig. 2 shows based on the IP intercommunication of MGC-MG control model and adopts directly cross-domain networking schematic diagram of single edge MG.This communication system adopts two nets territory IPa, IPb.IPa, IPb can be the IP network of heterogeneous or homogeneity, and/or may adopt different agreements to communicate in net territory separately.In Fig. 2, MGCa and MGCb are respectively the Media Gateway Controllers in IPa net territory and the IPb net territory, are respectively applied for the MG in control IPa net territory and IPb net territory.MGi is edge MG, is used for being concatenated into the Media Stream of the common MG of adjacent networks, realizes the communication between the media gateway in the adjacent networks, and can carry out protocol conversion between two nets of IPa, IPb territory.MGa and MGb are common MG, be used for representative of consumer and carry out call proceeding, and can be at the Media Stream between establishment user side and the network side under the MGC control.Because a physical gateway can be divided into a plurality of logic gateways (also claiming virtual gateway) from resource view and be controlled by a plurality of MGC respectively, so MGi shown in Fig. 2 and MGa, MGb is logic entity, also is virtual gateway.
As shown in Figure 3, the existing call request that is initiated to the user's (as called) on the MGb with the user on the MGa in the IPa territory (as caller) is an example, introduces the communication means of realizing the IP cross-domain inter communication by single edge media gateway in detail.
In step 1, MGa reports the MGCa that is responsible for MG management in the IPa territory with the call request information of calling subscriber on it by MGCP (as H.248), and described call request information comprises the setting of caller Media Stream, called party information (for example called number or name etc.) and caller information (for example calling number or caller name).
In step 2, it is called in the IPb territory that MGCa analyzes the back discovery to the called party information in the call request, so the MGCb of MG management in being responsible for the IPb territory transmits this call request information by call control protocol such as SIP (session initiation protocol).
In step 3, MGCb is handed down to MGb by MGCP (as H.24 8) with the caller information in the call request information (for example calling number or name).
In step 4, if MGb goes up the call request that the called subscriber admits this calling subscriber according to the caller information (for example calling number or name) that obtains, MGb carries out called Media Stream setting, and the former road of being provided with of called Media Stream returned reports MGCb.Whether the called subscriber determines to admit the rule of calling subscriber's call request can adopt artificial or the preset mode operation according to caller information (for example calling number or name).
In step 5, be controlled by MGCb if realize the MGi of IP intercommunication, then MGCb can pass through MGCP (as H.248) to MGi transmission IP domain information, the setting of caller Media Stream and called Media Stream setting, and MGi is created to Media Stream RTPa and the RTPb of MGa and MGb respectively according to IP domain information, the setting of caller Media Stream and called Media Stream setting.MGi will ownly return the former road of being provided with of Media Stream RTPa and RTPb and report MGCb, give MGa (transmitting through MGCa) and MGb by MGCb difference foldback again.
Be controlled by MGCa if realize the MGi of IP intercommunication, then MGCa is obtaining after the called Media Stream that MGCb transmits is provided with, send IP domain information, the setting of caller Media Stream and called Media Stream setting to MGi, MGi is created to Media Stream RTPa and the RTPb of MGa and MGb respectively according to IP domain information, the setting of caller Media Stream and called Media Stream setting.MGi will ownly return the former road of being provided with of Media Stream RTPa and RTPb and report MGCa, give MGa and MGb (transmitting through MGCb) by MGCa difference foldback again.
In step 6, MGa and MGb receive that separately MGi is to after being provided with of Media Stream RTPa and RTPb, can be respectively communicate by Media Stream RTPa and RTPb and MGi, MGi make in the IPa territory and the IPb territory in Media Stream RTPa and RTPb intercommunication, so calling subscriber on the MGa and the called subscriber on the MGb can communicate by MGi.
Should be noted that the present invention has only described thought of the present invention with two adjacent IP territories, obviously, the present invention also is applicable to adjacent in twos IP territory.In addition, the present invention has utilized single edges media gateway realization IP cross-domain inter communication, certainly, the present invention also can utilize a plurality of edge media gateways to realize the IP cross-domain inter communications.
According to the present invention, can realize the communication of two different IP networks by single edge media gateway.
Though described the present invention by embodiment, those of ordinary skills know, without departing from the spirit and substance in the present invention, just can make the present invention that many distortion and variation are arranged, and scope of the present invention is limited to the appended claims.
Claims (7)
1. realize the communication system of IP cross-domain inter communication it is characterized in that described system comprises by edge media gateway for one kind:
Adjacent heterogeneous or homogeneity IP territory, each IP territory comprises:
Media Gateway Controller is used for calling out control,
Media gateway is used for media bearer;
Edge media gateway, it belongs in one of them the network of adjacent heterogeneous or homogeneity IP territory, is used for being connected in series the Media Stream of adjacent networks media gateway, and the media gateway in the adjacent networks realizes cross-domain inter communication based on described Media Stream; Described Media Gateway Controller is issued edge media gateway with IP domain information under IP domain information under the caller media gateway and the called media gateway; Described edge media gateway obtains the caller media gateway by Media Gateway Controller and is provided with and called media gateway setting, and described edge media gateway is provided with according to IP domain information, the setting of caller media gateway and called media gateway under IP domain information, the called media gateway under the described caller media gateway and creates described Media Stream.
2. the communication means by edge media gateway realization IP cross-domain inter communication is characterized in that,
When caller media gateway in same territory and called media gateway need not communicate, the caller media gateway is carried out call proceeding and Media Stream establishment by between single edge media gateway and called media gateway under caller network media gate controller and the control of called network Media Gateway Controller; Carry out cross-domain communication based on the Media Stream of creating between caller media gateway and called media gateway; Described caller media gateway is controlled by described caller network media gate controller, described called media gateway is controlled by described called network Media Gateway Controller, and described edge media gateway is by described caller network media gate controller or the control of called network Media Gateway Controller;
Described Media Gateway Controller is issued edge media gateway with IP domain information under IP domain information under the caller media gateway and the called media gateway; Described edge media gateway obtains the caller media gateway by Media Gateway Controller and is provided with and called media gateway setting, and described edge media gateway is provided with according to IP domain information, the setting of caller media gateway and called media gateway under IP domain information, the called media gateway under the described caller media gateway and creates described Media Stream.
3. the communication means by edge media gateway realization IP cross-domain inter communication according to claim 2 is characterized in that described method comprises:
A, the request of making a call of caller media gateway, and described call request is transmitted to the called network Media Gateway Controller by caller network media gate controller, give called media gateway by called network Media Gateway Controller forwarded call request;
B, called media gateway are admitted call request, then under the control of Media Gateway Controller, caller network media gate controller and the called network Media Gateway Controller of controlling edge media gateway, by creating the Media Stream between caller media gateway, edge media gateway and the called media gateway, called media gateway and caller media gateway are led to cross-domain communication based on the Media Stream of creating.
4. the communication means by edge media gateway realization IP cross-domain inter communication according to claim 3, it is characterized in that described steps A further comprises: the called party information that Media Gateway Controller comprises according to call request is transmitted this call request.
5. the communication means by edge media gateway realization IP cross-domain inter communication according to claim 4 is characterized in that described step B also comprises: do not admit call request when called media gateway, finish this calling.
6. the communication means of realizing the IP cross-domain inter communication by edge media gateway according to claim 3, it is characterized in that the Media Gateway Controller of described responsible edge media gateway is that this edge media gateway is striden one of them Media Gateway Controller of adjacent IP network.
7. the communication means by edge media gateway realization IP cross-domain inter communication according to claim 3 is characterized in that described step B further comprises:
The Media Gateway Controller of B1, responsible edge media gateway is created to edge media gateway indication edge media gateway and is divided the Media Stream that is clipped to caller media gateway and called media gateway;
B2, edge media gateway are transmitted to caller media gateway and called media gateway respectively by Media Gateway Controller then with oneself dividing the setting of the Media Stream that is clipped to caller media gateway and called media gateway to report the Media Gateway Controller of being responsible for edge media gateway;
B3, caller media gateway and called media gateway are provided with the realization cross-domain communication according to resulting edge media gateway to the Media Stream of caller media gateway and called media gateway.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100698423A CN1859339B (en) | 2005-04-30 | 2005-04-30 | Communication system and method for realizing IP cross-domain inter communication by edge media gateway |
| EP06722411.3A EP1804429B1 (en) | 2005-04-30 | 2006-04-27 | A communication system and method for achieving ip cross-domain intercommunication via an edge media gateway |
| PCT/CN2006/000820 WO2006116920A1 (en) | 2005-04-30 | 2006-04-27 | A communication system and method for achieving ip cross-domain intercommunication via an edge media gateway |
| US11/688,577 US8774163B2 (en) | 2005-04-30 | 2007-03-20 | Communication system and method for implementing IP cross-domain interconnecting via border media gateway |
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| CN2005100698423A CN1859339B (en) | 2005-04-30 | 2005-04-30 | Communication system and method for realizing IP cross-domain inter communication by edge media gateway |
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| CN1859339B true CN1859339B (en) | 2010-07-07 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2006116920A1 (en) | 2005-04-30 | 2006-11-09 | Huawei Technologies Co., Ltd. | A communication system and method for achieving ip cross-domain intercommunication via an edge media gateway |
| CN101336002B (en) * | 2008-07-29 | 2011-11-30 | 中兴通讯股份有限公司 | Method and system for dual-tone multi-frequency signal parameter negotiation between media gateways |
| CN101394445B (en) * | 2008-10-22 | 2012-05-16 | 中兴通讯股份有限公司 | System and method for implementing encoding and decoding conversion function |
| CN101515936B (en) * | 2009-03-16 | 2013-04-24 | 华为技术有限公司 | Multi-domain intercommunicating method, system and device |
| CN104219247A (en) * | 2014-09-22 | 2014-12-17 | 中国科学院上海微系统与信息技术研究所 | Method for accessing IP network to wireless multimedia sensor network |
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| US20040190498A1 (en) * | 2003-03-25 | 2004-09-30 | Juha Kallio | Method, system and gateway device for enabling interworking between IP and CS networks |
| CN1571440A (en) * | 2003-07-25 | 2005-01-26 | 中兴通讯股份有限公司 | A system and method for implementing multimedia call crossing private network |
| CN1581872A (en) * | 2003-08-06 | 2005-02-16 | 中兴通讯股份有限公司 | Method for realizing signaling agency based on MEGACO protocol |
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| US20040190498A1 (en) * | 2003-03-25 | 2004-09-30 | Juha Kallio | Method, system and gateway device for enabling interworking between IP and CS networks |
| CN1571440A (en) * | 2003-07-25 | 2005-01-26 | 中兴通讯股份有限公司 | A system and method for implementing multimedia call crossing private network |
| CN1581872A (en) * | 2003-08-06 | 2005-02-16 | 中兴通讯股份有限公司 | Method for realizing signaling agency based on MEGACO protocol |
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