CN1522015A - Method for realizing message transmission and transaction reliability processing of media gateway control protocol - Google Patents
Method for realizing message transmission and transaction reliability processing of media gateway control protocol Download PDFInfo
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- CN1522015A CN1522015A CNA031032796A CN03103279A CN1522015A CN 1522015 A CN1522015 A CN 1522015A CN A031032796 A CNA031032796 A CN A031032796A CN 03103279 A CN03103279 A CN 03103279A CN 1522015 A CN1522015 A CN 1522015A
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Abstract
The invention relates to the field of telecommunication, which realizes the method for message transmission of media gateway control protocol (H.248) and business reliability processing, wherein association is introduced into the H.248 protocol layer, a local end message transmitter marking identification character (MID) and an opposite end message transmitter marking identification character (MID) are corresponding to one association, the application layer of the H.248 protocol builds the corresponding relation between the association and the connection based on the real situation for business reliability processing on the association, and performs message reception and transmission according to the corresponding relation between the association and the connection.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of method that realizes that MGCP (H.248) transmission of messages and transaction reliability are handled.
Background technology
MGCP (H.248) is a kind of agreement that is applied between Media Gateway Controller and the media gateway, Media Gateway Controller is responsible for the call state relevant with media gateway controlled, and media gateway is finished the conversion of media formats between the heterogeneous networks under the control of Media Gateway Controller.Be illustrated in figure 1 as the H.248 position view of agreement in the ICP/IP protocol hierarchical mode, H.248 the message of agreement is mainly transmitted on IP, when on IP, transmitting, its transport layer can be transmission control protocol (TCP, Transmission Control Protocol) or UDP (UDP, User Datagram Protocol) etc., UDP provides connectionless message formula service, and TCP provides a kind of connection-oriented streaming service, so-called being meant towards connection guarantees the correct of transfer of data, order is constant, do not lose, so-called streaming service is meant that user's data sends and receives all is character stream, rather than whole being encapsulated in the message of data block that the user is asked to send at every turn sends.In certain sense, H.248 agreement is divided into H.248 protocol layer and H.248 agreement user application layer again.
Socket (Socket) is the DLL (dynamic link library) that transport layer provides for application layer, connection-oriented or the connectionless communication service of client-server (client-server) form is provided to application program, it seems that from application program the main component of socket is a five-tuple (agreement, local address, local port number, address, opposite end, peer port number), for based on connection-oriented TCP:
In the Media Gateway Controller side, the flow process of application server end (server) is as follows:
1, calls socket () function and found main server;
2, call bind () function and specify local address and port numbers;
3, call listen () function and prepare to receive connection request;
4, call accept () function and monitor connection request, receive that accept behind the connection request can return a new socket number and client's (client) address and port numbers, later application program just uses new socket to communicate by letter with client;
5 ... (other flow process such as closing flow path etc. are no longer described at this).
In the media gateway side, the flow process of applications client (client) is as follows:
1, calls socket () function creation Socket;
2, call bind () function and specify local address and port numbers;
3, call connect () function and link to each other with specifying the opposite end, so far, one communicates to connect and sets up, and can send and receive H.248 message;
4 ... (other flow process such as closing flow path etc. are no longer described at this).
When H.248 protocol message transmits on TCP; although TCP provides reliable transmission mechanism; but because TCP is a kind of agreement based on stream; for H.248 agreement towards affairs; affairs in the message still might be lost; if losing, the affairs that Media Gateway Controller sends cause to obtain timely response; may cause repeating sending; to cause to predict to the state after the media gateway fill order; so H.248 agreement has been stipulated the ask for something of protection affairs reliable transmission, H.248 protocol layer or H.248 the agreement user application layer should realize and guarantee the reliable transmission of affairs according to protocol requirement.
One H.248 message form by a plurality of affairs, the affairs that comprised in the message are independent separately, each message all has a message header, the identifier that comprises the identification message sender in the message header, be called MID (Message Identifier), H.248 the Media Gateway Controller or the media gateway of a logic of agreement regulation should have unique MID, and H.248 the requirement to the transaction reliability transmission all is based on same MID's in the agreement.
Because H.248 protocol message transmits in the connection of TCP, and need be based on same MID's to the affairs reliable treatments that message transfer carries out, therefore, when MID be connected can be one by one at once, H.248 protocol layer or H.248 the agreement user application layer directly send and carry out being connected of receiving transaction reliability and handle and get final product finishing, but connection and MID are not the one-to-one relationship of fixing, also might be complicated situations such as many-one or one-to-many, thereby prior art can't realize that in these cases H.248 the transmission and the transaction reliability of message are handled.
Summary of the invention
Technical problem to be solved by this invention is: overcome prior art and connecting and message when sending reception two ends group identifier and being not one-to-one relationship, can't directly use to connect and carry out the deficiency that transaction reliability is handled, provide a kind of and connecting and message sends when receiving the two ends group identifier and being different corresponding relation, all can realize the H.248 method of transmission of messages and transaction reliability processing easily and reliably.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
The method that this realization MGCP transmission of messages and transaction reliability are handled may further comprise the steps:
A, introduce related (association) at MGCP (H.248) protocol layer, a local terminal sender of the message identifier (MID) and opposite end sender of the message's identifier (MID) corresponding one related;
B, set up association and be connected the corresponding relation of (Connection) according to actual conditions by agreement user application layer H.248;
C, handle, and carry out the reception or the transmission processing of message with the corresponding relation that is connected according to related in the enterprising behaviour affair of association reliability.
Among the described step B, have only a network interface and only set up one when connecting when a media gateway is divided into a plurality of virtual gateways or a plurality of media gateway, the MID of Media Gateway Controller respectively with the MID of different media gateway between corresponding a plurality of different related, and different related corresponding same connections.
Media Gateway Controller sends when handling, according to message be ready for sending to opposite end media gateway MID determine to send the association of message, finish when being ready for sending after transaction reliability in this association is handled, find corresponding connection, finish the transmission on connecting by association;
Media Gateway Controller receives when handling, and from receiving H.248 message, according to the opposite end media gateway MID in the message header, determines to receive the association of message, and the transaction reliability of finishing in this association is handled.
Media gateway is when sending processing, according to message be ready for sending to opposite end Media Gateway Controller MID determine to send the association of message, finish when being ready for sending after transaction reliability in this association is handled, find corresponding connection, finish the transmission on connecting by association;
Media gateway is receiving when handling, and from receiving H.248 message, according to the implementation strategy of media gateway message is distributed to relevant association, finishes the reliability processing of affairs.
If media gateway is a plurality of virtual gateways that mark off according to physical terminal, then described implementation strategy can be separated contained order corresponding physical terminal in the outbound message earlier for the functional module of being responsible for distributing by media gateway, determine to belong to which virtual gateway according to this physical terminal, thereby the message that receives is distributed in the association of this virtual gateway correspondence.
Among the described step B, when having set up a plurality of connection between a Media Gateway Controller and the media gateway, between the MID of Media Gateway Controller and the MID of media gateway corresponding one related, and should association corresponding with a plurality of different connections respectively.
Media Gateway Controller sends when handling, according to message be ready for sending to opposite end media gateway MID determine to send the association of message, finish when being ready for sending after transaction reliability in this association is handled, determine on which connects, to send according to the transmission strategy of Media Gateway Controller;
Receiving when handling, the H.248 message that receives from which no matter, the transaction reliability processing in this association is finished in all corresponding same association.
The transmission strategy of described Media Gateway Controller can be for sending on which connects according to the flow control decision.
Media gateway is when sending processing, according to message be ready for sending to opposite end Media Gateway Controller MID determine to send the association of message, finish when being ready for sending after transaction reliability in this association is handled, determine on which connects, to send according to the transmission strategy of media gateway;
Receiving when handling, the H.248 message that receives from which no matter, the transaction reliability processing in this association is finished in all corresponding same association.
The message that sends when media gateway is during for the response of request message that Media Gateway Controller is sent, and the transmission strategy of described media gateway is for sending response message in the connection that receives.
Beneficial effect of the present invention is: the present invention is by introducing related (association), and make MID set up corresponding relation with association with being connected respectively, a local terminal MID and the unique corresponding association of opposite end MID, like this, association can be regarded as a connection in logic, concerning protocol layer H.248, needn't be concerned about that actual physical connects, only need to finish transaction reliability and handle, set up association by agreement user application layer H.248 according to actual conditions and get final product with the corresponding relation that is connected according to association.
The invention provides a kind of the connection and MID when being various different corresponding relation, convenient, finish the H.248 method of transmission of messages and transaction reliability processing reliably.
Description of drawings
Fig. 1 is the position view of agreement in ICP/IP protocol hierarchical mode figure H.248;
Fig. 2 is association and the corresponding relation schematic diagram that is connected when having only one to be connected between Media Gateway Controller of the present invention and a plurality of media gateway;
Fig. 3 is association and the corresponding relation schematic diagram that is connected when setting up a plurality of the connection between Media Gateway Controller of the present invention and a media gateway.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
H.248 protocol message transmits in the connection of TCP, in order to guarantee the reliable transmission of the affairs in the message H.248, needs to realize that transaction reliability handles, and handles as transaction reliability and realizes to connecting that directly then the part situation is difficult to correspondence in the actual conditions.
The present invention is in H.248 protocol layer introducing related (association), and make MID directly be connected (connection) correspondence, but make MID set up corresponding relation with association with being connected respectively, like this, make MID set up corresponding relation indirectly by association with being connected, a local terminal MID and the unique corresponding association of opposite end MID, transaction reliability can be realized on an association like this.Association can be regarded as a connection in logic, concerning protocol layer H.248, needn't be concerned about that actual physical connects, only need to finish transaction reliability and handle, set up association by agreement user application layer H.248 according to actual conditions and get final product with the corresponding relation that is connected according to association.
When connecting and MID is not when concerning one to one, connection and MID one-to-many or many-to-one situation may appear, specifically describe as follows:
One, as shown in Figure 2, have only a network interface and only set up one when connecting when a media gateway is divided into a plurality of virtual gateways or a plurality of media gateway, because each logic gateway all has a MID, so the corresponding relation of connection and MID is the situation of one-to-many.
Introduce in detail from Media Gateway Controller side and media gateway side respectively below:
1, Media Gateway Controller side:
(1) foundation of corresponding relation:
Local terminal MID (MID of Media Gateway Controller) and the corresponding association1 of opposite end MID1 (MID of media gateway 1), local terminal MID (MID of Media Gateway Controller) and the corresponding association2 of opposite end MID2 (MID of media gateway 2), the association1 correspondence be connected to connection; The connection of association2 correspondence also is connection.
(2) send processing:
For Media Gateway Controller, preparing the media gateway which MID sign message H.248 be sent to determines, so also just determined to send the association of message, H.248 message on the different association is carried out transaction reliability respectively and is handled, just carried out the transaction reliability processing at MID, when being ready for sending, find corresponding connection by association, finish the transmission on connecting.
(3) receive processing:
From the H.248 message that receives, according to the sign of the opposite end media gateway MID in the message header, can determine to receive the association of message, the transaction reliability of finishing on this association is handled.
2, media gateway side:
(1) foundation of corresponding relation:
For example to media gateway 1, local terminal MID1 (MID of media gateway 1) and the corresponding association1 of opposite end MID (MID of Media Gateway Controller), the association1 correspondence be connected to connection.
(2) send processing:
For media gateway, it is unique preparing the Media Gateway Controller which MID sign message H.248 be sent to, so also just determined to send the association of message, finish when being ready for sending after transaction reliability on this association is handled, find corresponding connection by association, finish the transmission on connecting.
(3) receive processing:
From the H.248 message that receives, how being distributed to relevant association, to finish that transaction reliability handles be the specific implementation strategy of media gateway, if media gateway 1 and media gateway 2 are respectively two virtual gateways, and these two virtual gateways are divided according to physical terminal, then the media gateway functional module being responsible for distributing can be separated contained order corresponding physical terminal in the outbound message earlier, which virtual gateway this physical terminal belongs to can be known, so just the message that receives can be distributed on the association of this virtual gateway correspondence.
Two, as shown in Figure 3, when having set up the situation of a plurality of connections between a Media Gateway Controller and the media gateway, connect and the corresponding relation of MID is many-to-one situation.
Introduce in detail from Media Gateway Controller and media gateway side respectively below:
1, Media Gateway Controller side:
(1) corresponding relation is set up:
Local terminal MID (Media Gateway Controller MID) and the corresponding association of opposite end MID (media gateway MID), the corresponding association of connection1, the also corresponding association of connection2.
(2) send processing:
For Media Gateway Controller, preparing the media gateway which MID sign message H.248 be sent to determines, so also just determined to send the association of message, finish when being ready for sending after transaction reliability on this association is handled, because corresponding a plurality of connections, specifically on connecting, which sends the transmission strategy that belongs to Media Gateway Controller, as on which connects, sending according to the flow control decision.
(3) receive processing:
No matter which receives H.248 message from, all corresponding same association, the transaction reliability of finishing on this association is handled.
2, media gateway side:
(1) corresponding relation is set up:
The corresponding association of local terminal MID (media gateway MID) and opposite end MID (Media Gateway Controller MID), the corresponding association of connection1, the also corresponding association of connection2.
(2) send processing:
For media gateway, it is unique preparing the Media Gateway Controller which MID sign message H.248 be sent to, so also just determined to send the association of message, finish when being ready for sending after transaction reliability on this association is handled, because corresponding a plurality of connections, specifically on connecting, which sends the transmission strategy that belongs to media gateway, usually for media gateway, the message that sends mostly is the response of the request message that Media Gateway Controller is sent, and then should send response message in the connection that receives.
(3) receive processing:
The H.248 message that receives from which no matter, all corresponding same association, the transaction reliability of finishing on this association is handled.
The invention provides a kind of the connection and MID when being various different corresponding relation, convenient, finish the H.248 method of transmission of messages and transaction reliability processing reliably.
Claims (10)
1. method that realizes that MGCP transmission of messages and transaction reliability are handled may further comprise the steps:
A, introduce related (association) at MGCP (H.248) protocol layer, a local terminal sender of the message identifier (MID) and opposite end sender of the message's identifier (MID) corresponding one related;
B, set up association and be connected the corresponding relation of (Connection) according to actual conditions by agreement user application layer H.248;
C, handle, and carry out the reception or the transmission processing of message with the corresponding relation that is connected according to related in the enterprising behaviour affair of association reliability.
2. the method that realization MGCP transmission of messages according to claim 1 and transaction reliability are handled, it is characterized in that: among the described step B, have only a network interface and only set up one when connecting when a media gateway is divided into a plurality of virtual gateways or a plurality of media gateway, the MID of Media Gateway Controller respectively with the MID of different media gateway between corresponding a plurality of different related, and different related corresponding same connections.
3. the method that realization MGCP transmission of messages according to claim 2 and transaction reliability are handled, it is characterized in that: Media Gateway Controller sends when handling, according to message be ready for sending to opposite end media gateway MID determine to send the association of message, finish when being ready for sending after transaction reliability in this association is handled, find corresponding connection by association, finish the transmission on connecting;
Media Gateway Controller receives when handling, and from receiving H.248 message, according to the opposite end media gateway MID in the message header, determines to receive the association of message, and the transaction reliability of finishing in this association is handled.
4. the method for handling according to claim 2 or 3 described realization MGCP transmission of messages and transaction reliability, it is characterized in that: media gateway is when sending processing, according to message be ready for sending to opposite end Media Gateway Controller MID determine to send the association of message, finish when being ready for sending after transaction reliability in this association is handled, find corresponding connection by association, finish the transmission on connecting;
Media gateway is receiving when handling, and from receiving H.248 message, according to the implementation strategy of media gateway message is distributed to relevant association, finishes the reliability processing of affairs.
5. the method that realization MGCP transmission of messages according to claim 4 and transaction reliability are handled, it is characterized in that: if media gateway is a plurality of virtual gateways that mark off according to physical terminal, then described implementation strategy can be separated contained order corresponding physical terminal in the outbound message earlier for the functional module of being responsible for distributing by media gateway, determine to belong to which virtual gateway according to this physical terminal, thereby the message that receives is distributed in the association of this virtual gateway correspondence.
6. the method that realization MGCP transmission of messages according to claim 1 and transaction reliability are handled, it is characterized in that: among the described step B, when having set up a plurality of connection between a Media Gateway Controller and the media gateway, between the MID of Media Gateway Controller and the MID of media gateway corresponding one related, and should association corresponding with a plurality of different connections respectively.
7. the method that realization MGCP transmission of messages according to claim 6 and transaction reliability are handled, it is characterized in that: Media Gateway Controller sends when handling, according to message be ready for sending to opposite end media gateway MID determine to send the association of message, finish when being ready for sending after transaction reliability in this association is handled, determine on which connects, to send according to the transmission strategy of Media Gateway Controller;
Receiving when handling, the H.248 message that receives from which no matter, the transaction reliability processing in this association is finished in all corresponding same association.
8. the method that realization MGCP transmission of messages according to claim 7 and transaction reliability are handled is characterized in that: the transmission strategy of described Media Gateway Controller can be for sending on which connects according to the flow control decision.
9. the method for handling according to claim 6,7 or 8 described realization MGCP transmission of messages and transaction reliability, it is characterized in that: media gateway is when sending processing, according to message be ready for sending to opposite end Media Gateway Controller MID determine to send the association of message, finish when being ready for sending after transaction reliability in this association is handled, determine on which connects, to send according to the transmission strategy of media gateway;
Receiving when handling, the H.248 message that receives from which no matter, the transaction reliability processing in this association is finished in all corresponding same association.
10. the method that realization MGCP transmission of messages according to claim 9 and transaction reliability are handled, it is characterized in that: the message that sends when media gateway is during for the response of request message that Media Gateway Controller is sent, and the transmission strategy of described media gateway is for sending response message in the connection that receives.
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| CNB031032796A CN1302649C (en) | 2003-01-28 | 2003-01-28 | Method for realizing message transmission and transaction reliability processing of media gateway control protocol |
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| CN1302649C CN1302649C (en) | 2007-02-28 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007059650A1 (en) * | 2005-11-25 | 2007-05-31 | Zte Corporation | A media gateway system and a method for achieving the internal calling of the media gateway |
| WO2007065319A1 (en) * | 2005-12-07 | 2007-06-14 | Huawei Technologies Co., Ltd. | A method for controlling the media gateway to realize trunking service |
| CN100461749C (en) * | 2005-08-19 | 2009-02-11 | 华为技术有限公司 | Method for centralized distributing H.248 message |
| WO2009086754A1 (en) * | 2007-12-28 | 2009-07-16 | Huawei Technologies Co., Ltd. | Method and system for distributing the local transport address and media gateway and media gateway controller |
| CN101483728B (en) * | 2008-12-31 | 2013-10-30 | 深圳市同洲电子股份有限公司 | Digital television receiving terminal, connecting apparatus, system and method |
| CN103595823A (en) * | 2012-08-17 | 2014-02-19 | 华为技术有限公司 | Data transmission method, terminal and system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6832088B1 (en) * | 1999-07-19 | 2004-12-14 | Telefonaktiebolaget Lm Ericsson | Implementation of basic call setup transporting layer address and logical point in backward direction in cellular networks with separation of call control and bearer control |
| JP3575435B2 (en) * | 2001-03-09 | 2004-10-13 | 日本電気株式会社 | Telephone system and telephone connection monitoring method |
-
2003
- 2003-01-28 CN CNB031032796A patent/CN1302649C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100461749C (en) * | 2005-08-19 | 2009-02-11 | 华为技术有限公司 | Method for centralized distributing H.248 message |
| WO2007059650A1 (en) * | 2005-11-25 | 2007-05-31 | Zte Corporation | A media gateway system and a method for achieving the internal calling of the media gateway |
| CN101258717B (en) * | 2005-11-25 | 2011-11-23 | 中兴通讯股份有限公司 | Medium gateway system and method for realizing medium gateway internal call |
| WO2007065319A1 (en) * | 2005-12-07 | 2007-06-14 | Huawei Technologies Co., Ltd. | A method for controlling the media gateway to realize trunking service |
| WO2009086754A1 (en) * | 2007-12-28 | 2009-07-16 | Huawei Technologies Co., Ltd. | Method and system for distributing the local transport address and media gateway and media gateway controller |
| CN101471965B (en) * | 2007-12-28 | 2012-01-04 | 华为技术有限公司 | Method for distributing local transmission address, medium gateway and medium gateway controller |
| CN101483728B (en) * | 2008-12-31 | 2013-10-30 | 深圳市同洲电子股份有限公司 | Digital television receiving terminal, connecting apparatus, system and method |
| CN103595823A (en) * | 2012-08-17 | 2014-02-19 | 华为技术有限公司 | Data transmission method, terminal and system |
| WO2014026493A1 (en) * | 2012-08-17 | 2014-02-20 | 华为技术有限公司 | Data transmission method, terminal and system |
| CN103595823B (en) * | 2012-08-17 | 2018-05-11 | 华为技术有限公司 | Method, terminal and the system of data transfer |
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| CN1302649C (en) | 2007-02-28 |
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