CN1287573C - System for communication between media gateway controller and media gateway and method thereof - Google Patents
System for communication between media gateway controller and media gateway and method thereof Download PDFInfo
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Abstract
The present invention relates to a system and a method for communication between a media gateway controller and a media gateway. The present invention is mainly characterized in that a logic media gateway is arranged between a media gateway controller and media gateways, the logic media gateway receives messages reported by the media gateways and reports the messages to the media gateway controller, and at the same time, the logic media gateway receives operation control messages sent by the media gateway controller, determines a media gateway which receives the operation control messages in a group of media gateways and then sends the operation control messages to the corresponding media gateway. Therefore, the present invention reduces the realization complexity of the media gateway controller, at the same time, specialized development for the logic media gateway can be carried out, and accordingly, the system developing cost is reduced. In addition, the changing and upgrading of the logic media gateway and the media gateway controller which are separated in the present invention can not be affected mutually, and accordingly, new functions or devices are easily added.
Description
Technical field
The present invention relates to network communications technology field, relate in particular to a kind of Media Gateway Controller and media gateway communication system and method thereof.
Background technology
Realized separating of operation layer and bearing bed that in next generation network (NGN) its core concept is that the processing of professional control procedure and professional related media streams and the foundation of media stream bearing are separated.Wherein, the equipment of realizing professional control procedure is Media Gateway Controller (MGC), realize that the equipment that Media Stream is handled and media stream bearing is set up is media gateway (MG), Media Gateway Controller is mutual by carrying out between H248, MGCP (MGCP), H323 and SIP (conversation initialized protocol) etc. and media gateway, finish control to media gateway, to realize various communication services, be that media gateway is carried out the order that Media Gateway Controller sends, realize the voice communication between the media gateway.Described Media Gateway Controller can be that Softswitch (SoftSwitch) also can be an application server (AS), main being responsible for realizes calling out control and continuing, control a plurality of media gateway, be that Media Gateway Controller is separated CCF from media gateway, described CCF comprises: call routing, management control, connection control (foundation/dismounting session) and signalling interworking.The foundation of Media Gateway Controller and media gateway has realized call transfer and has called out separating of control, made things convenient for the management of network service.Described media gateway then is that the media conversion in a kind of network is become the desired media formats of another kind of network, and for example: media gateway can be changed etc. between the Media Stream of the bearer path of Circuit Switching Network and Packet Based Network.
Usually in once for network, Media Gateway Controller can be controlled a plurality of media gateway, and media gateway can be divided into according to different applicable cases: IAD, Tandem Gateway, media server, radio network gateway etc.; Media gateway can realize different bearer types, for example automatic asynchronous transfer mode (ATM), IP (Internet protocol) and circuit etc.Media gateway can use different agreements to carry out alternately with Media Gateway Controller, and employed variety of protocol comprises: H248, MGCP, SIP, H323, NCS (based on network call signaling) etc.Media Gateway Controller carries out intercommunication for realizing with various media gateway, need to realize and the mutual various protocols of media gateway, so Media Gateway Controller also will be realized the distributed operation of media resource, cause Media Gateway Controller very complicated to the control operation of media gateway, promptly cause Media Gateway Controller need realize multiple flow process, the distributed operation of the media resource of a plurality of agreements, thereby the Media Gateway Controller that makes is realized very complicated, the development cost height, configuration data, Operation and Maintenance, difficulty is all compared in upgrading and change, for example, increase a kind of media gateway of control protocol, then need carry out a large amount of modifications at Media Gateway Controller, configuration, not only influence the operate as normal of Media Gateway Controller, revise simultaneously, configuration effort is also comparatively loaded down with trivial details, is not easy to the maintenance and management to system.
Summary of the invention
Problem in view of above-mentioned prior art exists the purpose of this invention is to provide a kind of Media Gateway Controller and media gateway communication system and method thereof, reducing the complexity of Media Gateway Controller realization, and makes the whole system maintenance and management of being more convenient for.
The objective of the invention is to be achieved through the following technical solutions:
Described Media Gateway Controller and media gateway communication system comprise:
Media Gateway Controller: by the logical medium gateway to media gateway transmit operation control information, and the message that reports by logical medium gateway receiving media gateway;
One group media gateway: the control information operation that each media gateway receiving media gateway controller sends by the logical medium gateway, and pass through the logical medium gateway to the Media Gateway Controller reporting message;
Logical medium gateway: the message that the receiving media gateway reports, and report Media Gateway Controller, the control information operation that while receiving media gateway controller issues, and in a group media gateway, determine to receive the media gateway of this control information operation, then described control information operation is handed down to corresponding media gateway.
A described group media gateway is: one or more based on the media gateway that realizes with agreement a kind of or not of the same race.
Described Media Gateway Controller is Softswitch (SoftSwitch) or application server (AS).
Described logical medium gateway is internal or external at Media Gateway Controller.
Described logical medium gateway is internal or external at media gateway, makes a plurality of media gateway form a big media gateway.
Comprise in the described logical medium gateway and each media gateway corresponding virtual Media Gateway Controller, described Virtual Media Gateway controller receives the message of the medium gateway to report corresponding with it respectively, and the receiving media gateway controller issue control information operation.
The method of described Media Gateway Controller and media gateway communication comprises:
The logical medium gateway receives the message of each medium gateway to report, and reports Media Gateway Controller;
The control information operation that logical medium gateway receiving media gateway controller sends determine to receive the media gateway of described control information operation, and this control information operation is handed down to corresponding media gateway.
The method of described Media Gateway Controller and media gateway communication comprises:
The message that logical medium gateway receiving media gateway reports, determine to receive the Virtual Media Gateway controller of this message according to the media gateway sign of described message, and the resource identification of this media gateway is converted into resource identification in the logical medium gateway by corresponding Virtual Media Gateway controller, give Media Gateway Controller with this information reporting then;
Media Gateway Controller issues control information operation and gives the logical medium gateway, the logical medium gateway finds corresponding Virtual Media Gateway controller according to the resource identification of message, and by the Virtual Media Gateway controller with resource identification in the logical medium gateway and logical medium gateway identification, replace with resource identification and media gateway sign in the media gateway, then control information operation is handed down to the media gateway corresponding with it.
The method of described Media Gateway Controller and media gateway communication also comprises:
Corresponding relation at the medium resource identification between each Virtual Media Gateway controller of configuration and media gateway on the logical medium gateway, a unified medium resource identification promptly is set in the logical medium gateway, and configuration media gateway sign and the medium resource identification of media gateway and the corresponding relation of this medium resource identification after reunification.
The method of described Media Gateway Controller and media gateway communication further comprises:
The message of this media gateway use agreement that logical medium gateway receiving media gateway reports is that the information reporting of logical medium gateway and Media Gateway Controller use agreement is given Media Gateway Controller then with this message transformation;
Media Gateway Controller issues the control information operation of Media Gateway Controller and logical medium gateway use agreement and gives the logical medium gateway, and the logical medium gateway is that the logical medium gateway is handed down to the media gateway corresponding with it with the control information operation of this media gateway use agreement with message transformation.
When the calling subscriber when the called subscriber makes a call, method of the present invention further comprises:
The media gateway that the calling subscriber inserts is with the message informing logical medium gateway of user's off-hook;
After the logical medium gateway is received the message of user's off-hook, according to described media gateway medium resource identification give Media Gateway Controller with the information reporting of this calling subscriber's off-hook;
After Media Gateway Controller receives the message of user's off-hook, dial by logical medium gateway subscriber call and to cry, and be this call distribution Context identifier;
The media network controller obtains the called subscriber's that the calling subscriber reports number from the logical medium gateway, and connects between calling subscriber and called subscriber by the logical medium gateway;
When called subscriber's off-hook, the message of called subscriber's off-hook reports Media Gateway Controller by the logical medium gateway, and Media Gateway Controller is respectively by logical medium gateway subscriber call successively and called subscriber's receiving media stream.
The method of described Media Gateway Controller and media gateway communication also comprises the processing procedure behind the end of conversation, specifically comprises:
The called subscriber notifies Media Gateway Controller with on-hook message by the logical medium gateway;
Media Gateway Controller discharges the resource that this conversation takies by logical medium gateway subscriber call successively and called subscriber.
The control protocol that adopts of communicating by letter between described media gateway and the logical medium gateway comprises: MGCP agreement, or H248 agreement, or Session Initiation Protocol, or H323 agreement, or NCS agreement;
The control protocol that adopts of communicating by letter between described Media Gateway Controller and the logical medium gateway comprises: MGCP agreement, or H248 agreement, or Session Initiation Protocol, or H323 agreement, or NCS agreement;
Described logical medium gateway communicates by letter that what adopt is the internal control agreement when being built on the Media Gateway Controller as a functional entity with between each functional entity of Media Gateway Controller.
As seen from the above technical solution provided by the invention, Media Gateway Controller only need be controlled a logical medium gateway (LMG) among the present invention, just can realize each media gateway realization operation control, thereby reduce the complexity that Media Gateway Controller is realized based on different agreement.
Being the present invention realizes in the former Media Gateway Controller sophisticated functions of a plurality of media gateway controlling being separated in the logical medium gateway, make the exploitation of Media Gateway Controller can be more specialized, the processing capacity to calling out can be only paid close attention in the exploitation that is to say Media Gateway Controller; And, described logical medium gateway equally also can carry out specialized exploitation, and specialized exploitation can reduce cost of developing, that is to say that described logical medium gateway can realize resource-sharing, supporting a plurality of Media Gateway Controllers, thereby development cost is reduced.
Simultaneously, among the present invention, if when increasing the media gateway of a new protocol type, Media Gateway Controller need not to revise usually, perhaps only need to carry out more a spot of modification, for example, the function of the interface protocol of logical medium gateway and Media Gateway Controller may need expansion etc., that is to say that only needing mainly the logical medium gateway to be carried out corresponding modification can satisfy the demand.
In addition, among the present invention, the logical medium gateway of separation and the change of Media Gateway Controller and upgrading can realize being independent of each other, and what therefore what's new or newly added equipment will become in system is more easy; And the logical medium gateway and the Media Gateway Controller that separate also can be finished configuration more fast.
Description of drawings
Fig. 1 is existing Media Gateway Controller and media gateway communication system schematic diagram;
Fig. 2 is Media Gateway Controller of the present invention and media gateway communication system schematic diagram;
Fig. 3 a is method flow Fig. 1 of Media Gateway Controller of the present invention and media gateway communication;
Fig. 3 b is method flow Fig. 2 of Media Gateway Controller of the present invention and media gateway communication.
Embodiment
Core concept of the present invention is to make each access based on the media gateway of different agreement shield Media Gateway Controller (MGC) by setting up logical medium gateway (LMG), shield MGC simultaneously to being positioned at the operation of the distributed media resources on each different media gateway, thereby realize the realization based on the operation of the distributed media resources on the media gateway of various protocols is separated with the realization of MGC, thereby simplified the realization complexity of MGC, and made things convenient for the increase of business in the system.
The present invention separates independent realization with some functions among the MGC, promptly increases a logical medium gateway (LMG) in MGC and system that MC communicates by letter.Thereby make for Media Gateway Controller (MGC), only control a logical medium gateway, described logical medium gateway has all media resources of all media gateway (MG) under this Media Gateway Controller control.The logical medium gateway realizes that on the one hand media logic media gateway and the mutual applied control protocol of media gateway are to the conversion between Media Gateway Controller and the mutual applied control protocol of logical medium gateway, on the other hand Media Gateway Controller shielding is positioned at distributed media resource on each media gateway, promptly the media resource on the logical medium gateway is operated control only looking like on the Media Gateway Controller.That is to say, only need to use a kind of control protocol and logical medium gateway to communicate the control of realization at Media Gateway Controller to the logical medium gateway, the logical medium gateway then uses different control protocols and each media gateway to communicate, and realizes the control to media gateway.
Logical medium gateway reality does not really have media resource among the present invention, equally do not finish the operation of corresponding media resource yet, coding of the foundation of media bearer, Media Stream etc. for example, the logical medium gateway only is logically to have media resource for Media Gateway Controller.The essence of logical medium gateway is the mapping of the medium resource identification of completion logic media gateway to the medium resource identification of media gateway, and finish Media Gateway Controller to the operation of the media resource of logical medium gateway to mapping to the operation of the media resource of media gateway.
Below in conjunction with accompanying drawing Media Gateway Controller of the present invention and media gateway communication system are described further, referring to Fig. 2, described system specifically comprises:
Media gateway controller MGC: to media gateway transmit operation control information, as issue control information operation order that user under the media gateway is increased in a certain context etc. by the logical medium gateway; Simultaneously, the message that reports by logical medium gateway receiving media gateway, and can produce corresponding control information operation, as receive the message of user's off-hook under the media gateway, the operation control command that this user that then issues an order down dials according to the message of medium gateway to report;
One group media gateway MG1, MG2, MG3: the control information operation that each media gateway receiving media gateway controller sends by the logical medium gateway, and carry out corresponding media resource according to the content of corresponding control information operation and operate; Simultaneously, media gateway is also sent controller report message by the logical medium gateway to the medium net, as reports media resource state information etc.; A described group media gateway is one or more based on the media gateway that realizes with agreement a kind of or not of the same race, as shown in Figure 2, media gateway MG1 is based on the media gateway that the H248 agreement realizes, media gateway MG2 is based on the media gateway that MGCP realizes, media gateway MG3 then is based on the media gateway that SIP realizes;
Logical medium gateway: the message that the receiving media gateway reports, and report Media Gateway Controller, the control information operation that while receiving media gateway controller issues, and in a group media gateway, determine to receive the media gateway of this control information operation, then described control information operation is handed down to corresponding media gateway; Described logical medium gateway can be internal or external at Media Gateway Controller; And comprise in the described logical medium gateway and each media gateway corresponding virtual Media Gateway Controller, as the Virtual Media Gateway controller VMGC1 among Fig. 2, VMGC2, VMGC3, described Virtual Media Gateway controller receives the message of the medium gateway to report corresponding with it respectively, and the receiving media gateway controller issue control information operation, exist the corresponding relation of medium resource identification between each media gateway in a described Virtual Media Gateway controller and the group media gateway, the media resource of logic net is operated the mapping that the media resource of media gateway is operated so that the logical medium gateway is realized Media Gateway Controller; Described logical medium gateway can be used as an independently physical entity existence, also can be used as a functional entity realizes on the Media Gateway Controller equipment of physics, simultaneously also can be used as the media gateway realization of a functional entity, for example logical medium gateway and a plurality of media gateway are arranged in the network as a physical entity jointly at physics.
Also provide the method for a kind of Media Gateway Controller and media gateway communication based on said system the present invention, specifically may further comprise the steps:
(1) at the corresponding relation that disposes the medium resource identification between each Virtual Media Gateway controller and media gateway on the logical medium gateway, a unified medium resource identification promptly is set in the logical medium gateway, dispose media gateway sign and the medium resource identification of media gateway and the corresponding relation of this unified medium resource identification simultaneously, so that the logical medium gateway is handed down to corresponding media gateway according to corresponding medium resource identification by corresponding Virtual Media Gateway controller exactly with the control information operation that Media Gateway Controller issues, thereby the assurance media gateway is carried out corresponding media resource operation according to described control information operation;
(2) disposed the corresponding relation of above-mentioned medium resource identification after Media Gateway Controller just can be by communicating between logical medium gateway and media gateway, to realize the operation control of Media Gateway Controller to media gateway, Media Gateway Controller comprises two kinds to the operation control of medium net:
A kind of is according to the message of medium gateway to report corresponding media gateway to be operated control, and at this moment, the logical medium gateway receives the message of each medium gateway to report, and reports Media Gateway Controller; The message that logical medium gateway receiving media gateway reports, determine to receive the Virtual Media Gateway controller of this message according to the media gateway sign of described message, and the medium resource identification of this media gateway is converted into medium resource identification unified in the logical medium gateway by corresponding Virtual Media Gateway controller, give Media Gateway Controller with this information reporting then; Media Gateway Controller receives described message and determines control information operation to the respective media gateway according to the content of message, and be handed down to corresponding media gateway by corresponding Virtual Media Gateway controller in the logical medium gateway, like this, media gateway just can be carried out corresponding media resource operation according to the control information operation that issues, thereby realizes the operation control of Media Gateway Controller to media gateway;
As the called subscriber being increased to control information operation in the corresponding context to what the media gateway that the called subscriber inserted issued according to the calling subscriber's of medium gateway to report dial message;
Another kind is that Media Gateway Controller is initiatively operated control to media gateway transmit operation control information to media gateway, at this moment, media gateway controlling at first is handed down to the logical medium gateway with control information operation, behind the control information operation that logical medium gateway receiving media gateway controller sends, determine to receive the Virtual Media Gateway controller of this control information operation according to the medium resource identification of described control information operation, and medium resource identification in the logical medium gateway and logical medium gateway identification are replaced with the gateway identification and the medium resource identification of media gateway by corresponding Virtual Media Gateway controller, then this control information operation is handed down to the media gateway corresponding with it, like this, media gateway just can be carried out corresponding media resource operation according to the control information operation that issues, thereby realizes the operation control of Media Gateway Controller to media gateway.
In the method for the present invention:
The control protocol that adopts of communicating by letter between media gateway and the logical medium gateway comprises: MGCP agreement, or H248 agreement, or Session Initiation Protocol, or H323 agreement, or the NCS agreement etc.;
The control protocol that adopts of communicating by letter between Media Gateway Controller and the logical medium gateway comprises: MGCP agreement, or H248 agreement, or Session Initiation Protocol, or H323 agreement, or the NCS agreement etc.;
The logical medium gateway communicates by letter that what adopt is the internal control agreement when being built on the Media Gateway Controller as a functional entity with between each functional entity of Media Gateway Controller.
Therefore, the control protocol that adopts between the control protocol that is adopted between media gateway and logical medium gateway and logical medium gateway and Media Gateway Controller can be different control protocol, at this moment, just need on the logical medium gateway, realize the corresponding protocol conversion, normally carry out to guarantee communicating by letter between Media Gateway Controller and media gateway, be that each media gateway can be to the Media Gateway Controller reporting message, Media Gateway Controller also can issue control information operation to each media gateway; Described protocol conversion is:
During the message of this media gateway use agreement that reports when logical medium gateway receiving media gateway, the logical medium gateway reports Media Gateway Controller after needing this message transformation is the message of logical medium gateway and Media Gateway Controller use agreement again;
When the Media Gateway Controller that issues when Media Gateway Controller and the control information operation of logical medium gateway use agreement are given the logical medium gateway, the logical medium gateway need be with message its be converted into the logical medium gateway and be handed down to the media gateway corresponding with it with the control information operation of this gateway use agreement.
The method that provides based on the invention described above, now the process that makes a call to the called subscriber with the calling subscriber is that example is described further method of the present invention, still referring to Fig. 2, wherein, the interface of logical medium gateway uses the agreement as H248, control has the media gateway of MGCP below the logical medium gateway, the media gateway of H248 agreement and the media gateway of SIP, the user A under the media gateway of the MGCP under the logical medium gateway model once is described below, the call flow of user B under the media gateway of calling H248 agreement, suppose user A, end points corresponding in the MGCP gateway is called aaln/l@mgcp.com, and terminal iidentification corresponding in the logical medium gateway is A1001; User B, terminal corresponding in the H248 protocol gateway is called A1, and terminal iidentification corresponding in the logical medium gateway is A2001; Referring to Fig. 3 a and Fig. 3 b, described method specifically may further comprise the steps:
Step 31: behind user A (aaln/l) off-hook that inserts under the media gateway based on MGCP, the message by its off-hook of Notify (notice) command report is to the logical medium gateway;
Step 32: the logical medium gateway uses the message of the user A off-hook that the unified sign A1001 of user A in the logical medium gateway that insert under the media gateway based on MGCP report to Media Gateway Controller;
Step 33: after Media Gateway Controller is received the message of user A off-hook, return response message to the logical medium gateway, the notification logic media gateway has been received the message of the user A off-hook that it reports;
Step 34: the logical medium gateway returns response message to the media gateway of MGCP, confirms that the message of the user A off-hook that it reports is accurately received by Media Gateway Controller;
Step 35: Media Gateway Controller is received the message of user A off-hook, and after the logical medium gateway has returned response message, also need to issue ADD (increase) and order the logical medium gateway, require the logical medium gateway to put the dial-up prompt sound, detect the called subscriber's that user A dials number simultaneously for user A;
Step 36: after the logical medium gateway is received the increase order of Media Gateway Controller, issue RQNT (notice request) order, require the media gateway of MGCP to put the dial-up prompt sound for user A, detect the number that user A dials simultaneously to the media gateway of MGCP;
The media gateway of the step 37:MGCP required logical medium gateway that echoes is confirmed that it has received the notice request order that the logical medium gateway issues, and has been carried out corresponding media resource operation;
Step 38: the logical medium gateway is that the context of this calling distributes a Context identifier C1, and back response message is to Media Gateway Controller, and carrying in the message is the Context identifier C1 of this call distribution;
The media gateway user A of step 39:MGCP, the number of the called subscriber B that dials with NTFY (notice) command report is to the logical medium gateway;
Step 310: the logical medium gateway receive report by behind the number of user B, the number of the user B that dials to Media Gateway Controller report of user A with NTFY (notice) order;
Step 311: after Media Gateway Controller was received the number of user B, back response message was to the logical medium gateway;
Step 312: behind the response message that the logical medium gateway receives that Media Gateway Controller sends, return response message to the media gateway of MGCP at the number of the user B that reports;
Step 313: Media Gateway Controller sends the ADD order request to the logical medium gateway and user B is increased among the context C1 of this calling, simultaneously to user B ring;
Step 314: after the logical medium gateway is received described ADD order, sending the ADD order request to H248 protocol media gateway is context of call distribution based on user B, and a virtual terminal iidentification, simultaneously user B is increased to this in its context distributed;
Step 315:H248 protocol media gateway back response message is to the logical medium gateway, carrying in the message be user B context distributed to be designated the local media stream attribute that C2, virtual terminal be designated Rtp1 and virtual terminal Rtp1 be SDP1, described Media Stream attribute comprises information such as IP (Internet protocol) address and port numbers;
Step 316: after the logical medium gateway receives that H248 protocol media gateway adds the response message that send, issue the establishment bind command that requires user A to the media gateway of MGCP, the Media Stream attribute SDP1 with user B sends to user A simultaneously;
After the media gateway of step 317:MGCP is received and is created bind command, create the connection of user A, local media stream attribute in this connection is SDP2, the distant end media stream attribute is SDP1, the media gateway loopback of MGCP is created the response message of bind command and is given the logical medium gateway, comprises in the response message of establishment bind command creating sign that connects and the local media stream attribute SDP2 that should be connected;
Step 318: after the logical medium gateway was received the response message of media gateway of MGCP, issuing MOD (modification) order to the media gateway of H248 agreement, to revise the distant end media stream attribute of virtual terminal Rtp1 be SDP2;
The media gateway of step 319:H248 agreement is SDP2 according to the distant end media stream attribute of the modification order modification virtual terminal Rtp1 that receives then, and the response message of loopback MOD order is given the logical medium gateway, revises successfully with affirmation;
Step 320: the loopback of logical medium gateway is given Media Gateway Controller at the response message of the ADD order that issues in the step 313, and the ADD command operation that issues in the affirmation step 313 is finished;
Step 321: behind the called subscriber B off-hook, the media gateway of H248 agreement uses notification command report of user B offhook message to give the logical medium gateway;
Step 322: after the logical medium gateway is received the offhook message of user B, utilize notification command report of user B offhook message to give Media Gateway Controller;
Step 323: after Media Gateway Controller was received the offhook message of user B, the response message of loopback notification command was given the logical medium gateway, acknowledges receipt of described offhook message;
Step 324: the response message loopback notification command response message that the logical medium gateway returns according to Media Gateway Controller is given the media gateway of H248 agreement, acknowledges receipt of described offhook message;
Step 325: after Media Gateway Controller is received called subscriber B offhook message,, also send to revise and order the logical medium gateway, require user A transmitting-receiving Media Stream except that sending response message to the logical medium gateway controller;
Step 326: after the logical medium gateway is received and revised order, send the media gateway that MDCX (revise and connect) orders MGCP, the connection transmitting-receiving Media Stream that requires user A to create;
The response message of the media gateway loopback MDCX of step 327:MGCP (revise and connect) order is to the logical medium gateway, and the connection that affirmation user A creates can be carried out the transmitting-receiving of Media Stream;
Step 328: the response message of logical medium gateway loopback MOD order confirms that to Media Gateway Controller the connection of user A establishment can be carried out the transmitting-receiving of Media Stream;
Step 329: Media Gateway Controller sends to revise orders the logical medium gateway, requires user B transmitting-receiving Media Stream;
Step 330: the logical medium gateway sends the media gateway that MOD (modification) orders the H248 agreement after receiving and revising order, requires virtual terminal Rtp1 transmitting-receiving Media Stream;
The response message of media gateway loopback MOD (modification) order of step 331:H248 agreement confirms that to the logical medium gateway user B can carry out the transmitting-receiving of Media Stream, and promptly virtual terminal Rtp1 can carry out the transmitting-receiving of Media Stream;
Step 332: the response message that the response message loopback MOD that the logical medium gateway returns according to the media gateway of H248 agreement orders is to Media Gateway Controller;
Finished above-mentioned steps 31 to the operation of step 332, user A and user B just can enter normal conversation state, after communication process finishes, are example with user B on-hook, and method of the present invention also needs to carry out following steps:
The media gateway of step 333:H248 agreement sends Ntfy (notice) and orders the logical medium gateway, notifies user B the message of on-hook;
Step 334: after the logical medium gateway is received the message of user B on-hook, send Ntfy (notice) and order Media Gateway Controller, notice Media Gateway Controller user B on-hook;
Step 335: after the notified order of Media Gateway Controller, the response of loopback Ntfy (notice) order acknowledges receipt of notification command to the logical medium gateway;
Step 336: after the response of the notified order of logical medium gateway, then the response of loopback Ntfy (notice) order is confirmed the notified order of Media Gateway Controller to the media gateway of H248 agreement;
Step 337: after the notification command of Media Gateway Controller according to the user B on-hook of receiving, issue SUBTRACT (subtracting) and order the logical medium gateway, require in the context of creating, to deduct user A;
Step 338: after the logical medium gateway is received and subtracted order, issue the media gateway that DLCX (deletion connects) orders MGCP, the connection that requires deletion user A to create;
The media gateway of step 339:MGCP is according to after the deletion bind command of receiving and carrying out corresponding media resource operation, and the logical medium gateway is given in the response of loopback DLCX (deletion connects);
Step 340: after the logical medium gateway was received the response of the deletion connection that the media gateway of MGCP is sent, Media Gateway Controller was given in the response of loopback SUBTRACT (subtracting) order;
Step 341: Media Gateway Controller then issues SUBTRACT (subtracting) and orders the logical medium gateway after receiving the described response that subtracts order, requires to deduct user B in the context of creating;
Step 342: after the logical medium gateway is received and subtracted order, then issue the media gateway that SUBTRACT (subtracting) orders the H248 agreement, require all terminals in the context of deletion user B place, be about to user B and virtual terminal Rtp1 and from context, delete;
After the media gateway of step 343:H248 agreement is received and is subtracted order, all terminals in the context of deletion user B place, and the logical medium gateway is given in the response of loopback SUBTRACT (subtracting) order;
Step 344: after the logical medium gateway was received the response that subtracts order, Media Gateway Controller was given in the response of loopback SUBTRACT (subtracting) order, confirmed user B to be deleted from calling out the connection of creating for this.
So far, the communication process of user A and user B finishes, and relevant resource also is released.
From described step 31 to step 344 as can be seen, if there is not the logical medium gateway, Media Gateway Controller must be realized every function that the logical medium gateway is finished, comprise: needs are realized H248 agreement and two kinds of agreements of MGCP, the interaction flow of the complexity of the media gateway of logical medium gateway and H248 agreement and the media gateway of MGCP; This will increase the complexity that Media Gateway Controller is realized greatly, and step 31 only is the simplest call flows to step 344, if will realize complicated new business, for example, Call Waiting, calling forward pass etc., the realization of Media Gateway Controller will be complicated more.And if every function that the logical medium gateway is finished all realizes on Media Gateway Controller, will cause the increase of new business and existing professional modification all to become very inconvenient.And by method of the present invention: Media Gateway Controller only need be controlled a logical medium gateway (LMG), just can realize each media gateway realization operation control based on different agreement, thereby reduced the complexity that Media Gateway Controller is realized, and the modification of the increase of new business and existing business is simple and convenient.
Claims (13)
1, a kind of Media Gateway Controller and media gateway communication system is characterized in that comprising:
Media Gateway Controller: by the logical medium gateway to media gateway transmit operation control information, and the message that reports by logical medium gateway receiving media gateway;
One group media gateway: the control information operation that each media gateway receiving media gateway controller sends by the logical medium gateway, and pass through the logical medium gateway to the Media Gateway Controller reporting message;
Logical medium gateway: the message that the receiving media gateway reports, and report Media Gateway Controller, the control information operation that while receiving media gateway controller issues, and in a group media gateway, determine to receive the media gateway of this control information operation, then described control information operation is handed down to corresponding media gateway.
2, Media Gateway Controller according to claim 1 and media gateway communication system is characterized in that a described group media gateway is: one or more based on the media gateway that realizes with agreement a kind of or not of the same race.
3, Media Gateway Controller according to claim 1 and media gateway communication system is characterized in that described Media Gateway Controller is Softswitch or application server.
4, Media Gateway Controller according to claim 1 and media gateway communication system is characterized in that described logical medium gateway is internal or external at Media Gateway Controller.
5, Media Gateway Controller according to claim 1 and media gateway communication system is characterized in that described logical medium gateway is internal or external at media gateway, make a plurality of media gateway form a big media gateway.
6, according to claim 1,2,3,4 or 5 described Media Gateway Controller and media gateway communication system, it is characterized in that comprising in the described logical medium gateway and each media gateway corresponding virtual Media Gateway Controller, described Virtual Media Gateway controller receives the message of the medium gateway to report corresponding with it respectively, and the control information operation that issues of receiving media gateway controller.
7, the method for a kind of Media Gateway Controller and media gateway communication is characterized in that comprising:
The logical medium gateway receives the message of each medium gateway to report, and reports Media Gateway Controller;
The control information operation that logical medium gateway receiving media gateway controller sends determine to receive the media gateway of described control information operation, and this control information operation is handed down to corresponding media gateway.
8, the method for Media Gateway Controller according to claim 7 and media gateway communication is characterized in that this method comprises:
The message that logical medium gateway receiving media gateway reports, determine to receive the Virtual Media Gateway controller of this message according to the media gateway sign of described message, and the resource identification of this media gateway is converted into resource identification in the logical medium gateway by corresponding Virtual Media Gateway controller, give Media Gateway Controller with this information reporting then;
Media Gateway Controller issues control information operation and gives the logical medium gateway, the logical medium gateway finds corresponding Virtual Media Gateway controller according to the resource identification of message, and by the Virtual Media Gateway controller with resource identification in the logical medium gateway and logical medium gateway identification, replace with resource identification and media gateway sign in the media gateway, then control information operation is handed down to the media gateway corresponding with it.
9, the method for Media Gateway Controller according to claim 8 and media gateway communication is characterized in that this method also comprises:
Corresponding relation at the medium resource identification between each Virtual Media Gateway controller of configuration and media gateway on the logical medium gateway, a unified medium resource identification promptly is set in the logical medium gateway, and configuration media gateway sign and the medium resource identification of media gateway and the corresponding relation of this medium resource identification after reunification.
10, the method for Media Gateway Controller according to claim 7 and media gateway communication is characterized in that this method further comprises:
The message of this media gateway use agreement that logical medium gateway receiving media gateway reports is that the information reporting of logical medium gateway and Media Gateway Controller use agreement is given Media Gateway Controller then with this message transformation;
Media Gateway Controller issues the control information operation of Media Gateway Controller and logical medium gateway use agreement and gives the logical medium gateway, and the logical medium gateway is that the logical medium gateway is handed down to the media gateway corresponding with it with the control information operation of this media gateway use agreement with message transformation.
11, according to the method for claim 7,8,9 or 10 described Media Gateway Controllers and media gateway communication, it is characterized in that when the calling subscriber when the called subscriber makes a call, this method further comprises:
The media gateway that the calling subscriber inserts is with the message informing logical medium gateway of user's off-hook;
After the logical medium gateway is received the message of user's off-hook, according to described media gateway medium resource identification give Media Gateway Controller with the information reporting of this calling subscriber's off-hook;
After Media Gateway Controller receives the message of user's off-hook, dial by logical medium gateway subscriber call and to cry, and be this call distribution Context identifier;
Media Gateway Controller obtains the called subscriber's that the calling subscriber reports number from the logical medium gateway, and connects between calling subscriber and called subscriber by the logical medium gateway;
When called subscriber's off-hook, the message of called subscriber's off-hook reports Media Gateway Controller by the logical medium gateway, and Media Gateway Controller is respectively by logical medium gateway subscriber call successively and called subscriber's receiving media stream.
12, the method for Media Gateway Controller according to claim 11 and media gateway communication is characterized in that the processing procedure after this method also comprises end of conversation, specifically comprises:
The called subscriber notifies Media Gateway Controller with on-hook message by the logical medium gateway;
Media Gateway Controller discharges the resource that this conversation takies by logical medium gateway subscriber call successively and called subscriber.
13, the method for Media Gateway Controller according to claim 7 and media gateway communication is characterized in that:
The control protocol that adopts of communicating by letter between described media gateway and the logical medium gateway comprises: MGCP agreement, or H248 agreement, or Session Initiation Protocol, or H323 agreement, or NCS agreement;
The control protocol that adopts of communicating by letter between described Media Gateway Controller and the logical medium gateway comprises: MGCP agreement, or H248 agreement, or Session Initiation Protocol, or H323 agreement, or NCS agreement;
Described logical medium gateway communicates by letter that what adopt is the internal control agreement when being built on the Media Gateway Controller as a functional entity with between each functional entity of Media Gateway Controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03159215 CN1287573C (en) | 2003-09-02 | 2003-09-02 | System for communication between media gateway controller and media gateway and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03159215 CN1287573C (en) | 2003-09-02 | 2003-09-02 | System for communication between media gateway controller and media gateway and method thereof |
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| Publication Number | Publication Date |
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| CN1592282A CN1592282A (en) | 2005-03-09 |
| CN1287573C true CN1287573C (en) | 2006-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 03159215 Expired - Lifetime CN1287573C (en) | 2003-09-02 | 2003-09-02 | System for communication between media gateway controller and media gateway and method thereof |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101378539B (en) * | 2007-08-27 | 2012-01-25 | 华为技术有限公司 | Method, system and equipment for controlling medium stream |
| CN101471930A (en) * | 2007-12-28 | 2009-07-01 | 华为技术有限公司 | Method and device for obtaining medium stream information |
| CN102098294B (en) * | 2010-12-28 | 2013-11-06 | 华为技术有限公司 | Method for acquiring access user information and session border controller |
| CN107770175B (en) * | 2017-10-23 | 2020-04-10 | 中国联合网络通信集团有限公司 | Soft switch calling method and system |
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- 2003-09-02 CN CN 03159215 patent/CN1287573C/en not_active Expired - Lifetime
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| CN1592282A (en) | 2005-03-09 |
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Effective date of registration: 20211222 Address after: 450046 Floor 9, building 1, Zhengshang Boya Plaza, Longzihu wisdom Island, Zhengdong New Area, Zhengzhou City, Henan Province Patentee after: xFusion Digital Technologies Co., Ltd. Address before: 518129 Bantian HUAWEI base, Longgang District, Shenzhen, Guangdong Patentee before: HUAWEI TECHNOLOGIES Co.,Ltd. |
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