CN1283081C

CN1283081C - Method for realizing call processing via virtual medium gateway

Info

Publication number: CN1283081C
Application number: CN 03121337
Authority: CN
Inventors: 陈诚
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2003-03-26
Filing date: 2003-03-26
Publication date: 2006-11-01
Anticipated expiration: 2023-03-26
Also published as: CN1533109A

Abstract

The present invention discloses a realizing method of a virtual medium gateway (VMGW). The method comprises the following steps: a medium controller sends a calling message to a medium gateway; the medium gateway identifies a VMGW stated by the calling information; the medium gateway judges whether of the operation carried out by the calling message satisfies the limit condition of a capacity parameter or not according to the capacity configuration of the VMGW, if true, then the VMGW continues to carry out calling processing, else the calling is rejected. The present invention provides a realizing method of a VMGW with effective operation management for an operator and effectively solves the problem of operation management of a VMGW.

Description

A kind of method that realizes call treatment by Virtual Media Gateway

Technical field

The present invention relates to equipment of the core network-media gateway (MGW) in WCDMA system and the NGN system, particularly on MGW equipment, realize the method for Virtual Media Gateway.

Background technology

In the WCDMA system and in next generation network (NGN) system, the switching equipment of core net realizes that carrying separates with controlled function, be that original switching equipment is separated into two equipment: media controller (MGC) and MGW, MGC equipment is realized CCF, MGW realizes carrying control and carrying interactive function, the carrying media that MGW supports can be Time Division Multiplexing, ATM(Asynchronous Transfer Mode) or IP, and MGC passes through H.248/MGCP agreement control MGW.In the WCDMA system, separate the back structure as shown in Figure 1.

Suppose to have two MGW, be respectively MGW1 and MGW2, two MGW are controlled by same MGC, and H.248 the communications protocol between MGW and the MGC is.When at the user User1 of MGW1 needs with in the user User2 of MGW2 communication, generally the communication process brief description is as shown in Figure 2:

Process description:

(1) MGC selects the gateway MGW1 of user User1 side, and notice MGW1 increases the end points T1 of User1 side, sets up to be connected with the carrying of User1, returns MGC after finishing;

(2) MGC selects the gateway MGW2 of user User2 side, the carrying end T2 that notice MGW1 increases and MGW2 links, and the carrying of preparation and MGW2, and MGW1 is changed to connection status to T1 and T2 automatically, returns MGC after finishing;

(3) MGC notice MGW2 increases the carrying end T3 that is connected with MGW1, and sets up the carrying between T2 and two end points of T3, returns MGC after finishing;

(4) MGC notice MGW2 increases user User2 side point T4, and the carrying between foundation and the User2 couples together T3 and T4 end points then, returns MGC.Such two users have just set up annexation by three sections carryings between four end points;

(5) other process is omitted at this.

According to standard code, a MGW equipment can only be subjected to a MGC Equipment Control, if a MGW will be subjected to the control of a plurality of MGC, can divide Virtual Media Gateway, promptly the media gateway device of a physics, be divided into the media gateway device of a plurality of logics, each media gateway device in logic is called Virtual Media Gateway (being called for short VMGW), can independently be subjected to the control of a MGC equipment, MGC can control VMGW as control physics MGW.

The applicable cases of VMGW function is a lot, and as shared network, the physical network of an operator can mark the wholesale operator that gives other of a part of network communications capability lease; Virtual operator uses; The heterogeneous networks of same operator (as NGN system and WCDMA system) is shared the core switching network; Intercommunication between the network of a plurality of heterogeneous networks or different operators can effectively be saved cost by the number of VMGW function minimizing physical equipment.

The method of simple realization VMGW is:

(1) configuration information of each VMGW only has: essential informations such as MGC address, opposite end, local terminal address, port numbers, VMGW sign (VMGW sign and local terminal address port number corresponding relation is arranged, do not allow repetition), the ability of VMGW is not done any restriction;

(2) MGW as long as MGW has resource and disposal ability, just can handle calling by normal flow behind the call information of the MGC that receives the VMGW correspondence, and the MGW ability that can control each MGC is not done qualification; The support of VMGW only is embodied on the interface with MGC, and the disposal ability of VMGW directly is subjected to the sky system of MGC.

The shortcoming of this method is that MGW does not do any restriction to the disposal ability of each VMGW, and the resource of MGW and disposal ability all are limited, have drawback in actual applications.When giving other operators or a plurality of network when sharing this equipment as the shared network equipment leasing, if the MGC of two VMGW correspondences belongs to the different interests group of different operators or same operator, can not provide a kind of way that MGW resource and disposal ability are controlled and to effective operation management method of VMGW to operator.

Summary of the invention

The invention provides a kind of method, can make MGW equipment operator effectively control the ability that each VMGW provides MGC by this method by Virtual Media Gateway realization call treatment.

The present invention is in comprising the steps:

A, media controller send message related to calls to media gateway;

B, media gateway identify the Virtual Media Gateway under the message related to calls;

C, media gateway be according to the ability configuration of Virtual Media Gateway, judges whether operation that this message related to calls is carried out satisfies the parameter limit condition of ability, if judged result then continues call treatment by Virtual Media Gateway for being, otherwise the refusal calling.

According to said method:

If the ability of Virtual Media Gateway do not do the configuration be defaulted as do not do the restriction.

The configuration of described ability comprise to the restriction of calling out number, to call out the restriction of using the end points number, to one in the restriction of bearing capacity, restriction, encoding and decoding resource limit, Echo Cancellation resource limit, support, meeting disposal ability and the support that the Virtual Media Gateway independent operation is safeguarded or multinomial to the function of Virtual Media Gateway inside intercommunication to type of call.

Among the described step C, when judging whether to satisfy its ability parameter restrictive condition, can sort arbitrarily to the judgement of ability parameter also can be according to certain rank order.

The effect of the inventive method is: the present invention effectively solves the operation management problem of VMGW for operator provides a kind of effectively implementation method of the VMGW of operation management.

Description of drawings

Fig. 1 is carrying and structural representation after controlled function is separated in the WCDMA system;

Fig. 2 is the flow chart of two Virtual Media Gateway communications;

Fig. 3 is a main flow chart of the present invention;

Fig. 4 is the flow chart of Virtual Media Gateway of the present invention to the ability parameter judgment processing.

Embodiment

The present invention mainly influences the processing procedure of MGW equipment to calling out, and does not influence miscellaneous equipment and equipment room standard interface.Based on the flow process of WCDMA system or NGN system,, message related to calls is done special processing in MGW inside according to configuration information to VMGW.

Application of the present invention does not influence networking, and its hardware environment is identical with existing networking, and its network environment figure can use networking mode shown in Figure 1.

, when disposing VMGW, except that the address and information such as port numbers, corresponding VMGW sign of the address that disposes opposite end MGC, local terminal MGW, also need the content of each VMGW ability of following expression is configured at MGW:

(1) VMGW capacity: maximum number or the maximum number of endpoint of calling out;

(2) bearing capacity: support TDM, ATM, IP bearing capacity and the maximum number of endpoint in every kind of carrying;

(3) type of call: support WCDMA, NGN to call out or other type call;

(4) encoding and decoding (Transcode, TC) resource: maximum TC passage number;

(5) Echo Cancellation (Echo Cancel, EC) resource: maximum EC-passage number;

(6) intercommunication ability: whether support with same MGW in the inner intercommunication of VMGW;

(7) conference capability: maximum conferree's number;

(8) Operation and Maintenance ability: independent traffic statistics and the following function of whether supporting VMGW;

(9) other: whether support Lawful Interception, to encrypted transmission of data flow etc.

It is mutually constraint that above parameter has part, can not surpass total number of endpoint of VMGW as the end points number summation of every kind of bearing capacity of VMGW, also can a configuration section parameter, do not limit if dispose this parameter acquiescence.

Consult Fig. 3 and flow chart shown in Figure 4:

Only need in the present invention to do special processing, call out irrelevant message and handle by normal flow to calling out relevant message.

Media controller in the system sends message related to calls to media gateway.Before using VMGW, at first VMGW is done configuration, and set up the annexation of VMGW and MGC by above description content, VMGW just can receive the message of MGC then, and message comprises calls out relevant message and calls out irrelevant message.

Media gateway identifies the described Virtual Media Gateway of message related to calls.MGW identifies the affiliated VMGW sign of message according to the address and the port numbers that receive message.

Media gateway is according to the configuration of the ability of Virtual Media Gateway, judges whether operation that this message related to calls is carried out satisfies the parameter limit condition of ability, if judged result then continues call treatment by Virtual Media Gateway for being, otherwise the refusal calling.The judgement whether parameter of aforementioned capabilities is met the demands, can not rely on concrete content of parameter, be that the sequencing that each parameter is judged can be to arrange arbitrarily, can be the arrangement according to a definite sequence, definite realization to technical solution of the present invention of this order have substantial influence yet.

Below the parameter limit condition of ability is elaborated:

1, to calling out the restriction of number

If first message of calling out, and the maximum calls that this VMGW allows, the calling number of this VMGW that adds up have been disposed, judge whether to surpass the maximum calling number of configuration,, then continue call treatment if do not surpass, otherwise refusal is called out, and returns failure to MGC and replys;

2, to calling out the restriction of using the end points number

If increase end points message newly, and disposed the calling use end points maximum number that this VMGW allows (using the restriction of end points number can have only) to calling out number and calling, the end points number adds up, judge whether to surpass the maximum calling use end points number of configuration, if do not surpass, then continue call treatment, reply otherwise return failure to MGC;

3, to the restriction of bearing capacity

If increase end points message or bearing capacity change message newly, and disposed the bearer types that this VMGW permission is used, bearer types can be TDM, ATM or IP, judge whether to require to increase or be changed to the carrying end type that VMGW allows, if, then continue calling procedure, reply otherwise return failure to MGC;

If bearer types allows, and disposed the maximum end points number (total end points number that this maximum end points number and VMGW allow can have a proportion relation) of using this kind carrying to allow, the end points number of this kind carrying adds up, judge whether to surpass the permission maximum, if do not surpass, then continue call treatment, reply otherwise return failure to MGC;

4, to the restriction of type of call

According to the message related to calls content, can judge is that WCDMA calls out or NGN calls out or other is called out, and has disposed the call type that allows, and judges whether to allow this type of calling.If allow, then call out and proceed, otherwise return the failure response message;

5, TC resource limit

Receive after the message of MGC if need in call context, insert the TC resource, and disposed maximum permission TC passage number, the TC passage number that adds up and used, judge whether to surpass maximum number, if do not surpass, then call out and proceed, otherwise return the failure response message;

6, EC resource limit

If MGC message requires to insert the EC resource in call context, and has disposed maximum permission EC passage number, the EC passage number that adds up and used judges whether to surpass maximum number, if do not surpass, then calls out and proceeds, otherwise return the failure response message;

7, to the support of the function of VMGW inside intercommunication

If in call handling process, two callings can be done inner intercommunication (concrete grammar exceeds this claim), according to the configuration determination interoperability methods;

8, meeting disposal ability

If a calling is Conference Calling, and the participant who has disposed Conference Calling limits number, and all numbers of attending a meeting of this VMGW that add up judge whether to surpass maximum number, if surpass, refuses new participant's adding, up to there being the participant to withdraw from certain meeting;

9, the support that the VMGW independent operation is safeguarded

All VMGW share identical operations and safeguard environment, can provide necessarily independently Operation and Maintenance function to each VMGW, mainly comprise traffic statistics and following function.The user can issue traffic statistics or trace command according to the VMGW sign at control desk.

After receiving MGC message, MGW judges whether needs traffic statistics or tracking according to VMGW sign and configuration information, if need then statistical information and tracking message to be sent to the Operation and Maintenance platform, the Operation and Maintenance platform is distinguished information according to the VMGW sign, can check for the user;

10, other ability

Can carry out Lawful Interception and encrypted transmission on the IP packet network to the calling of VMGW according to configuration.

In the step that aforementioned capabilities is judged, parameter is judged there is not dominance relation, can set, do not influence specific implementation of the present invention according to user's specific requirement.

The present invention can make MGW equipment operator effectively control the ability that each VMGW provides MGC, as bearing capacity, capacity limit, function restriction etc. for operator provides a kind of effectively implementation method of the VMGW of operation management.

The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.

Claims

1, a kind of method by Virtual Media Gateway realization call treatment is characterized in that comprising the steps:

A, media controller send message related to calls to media gateway;

C, media gateway dispose according to the ability parameter of Virtual Media Gateway, judge whether the operation that this message related to calls is carried out satisfies its ability parameter restrictive condition, if judged result then continues call treatment by Virtual Media Gateway for being, otherwise refusal is called out.

2, the method for claim 1, it is characterized in that if the ability of Virtual Media Gateway do not do the configuration be defaulted as do not do the restriction.

3, the method for claim 1, it is characterized in that the configuration of described ability parameter comprise to the restriction of calling out number, to call out the restriction of using the end points number, to one in the restriction of bearing capacity, restriction, encoding and decoding resource limit, Echo Cancellation resource limit, support, meeting disposal ability and the support that the Virtual Media Gateway independent operation is safeguarded or multinomial to the function of Virtual Media Gateway inside intercommunication to type of call.

4, method as claimed in claim 3 is characterized in that among the described step C, and when judging whether to satisfy its ability parameter restrictive condition, can sort arbitrarily to the judgement of ability parameter also can be according to certain rank order.