CN100359906C - Method for synchronizing H.248 protocol user state - Google Patents

Method for synchronizing H.248 protocol user state Download PDF

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Publication number
CN100359906C
CN100359906C CNB2003101122135A CN200310112213A CN100359906C CN 100359906 C CN100359906 C CN 100359906C CN B2003101122135 A CNB2003101122135 A CN B2003101122135A CN 200310112213 A CN200310112213 A CN 200310112213A CN 100359906 C CN100359906 C CN 100359906C
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termination
state
mgc
mgw
service change
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CN1545297A (en
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刘其锋
王传政
胡宪利
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ZTE Corp
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ZTE Corp
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Abstract

The present invention discloses a method for synchronizing H. 248 protocol user states in the field of communication, which comprises the three treatments of Termination state change detected by an MGW, Termination state change detected by an MGC and the Termination state real-time monitoring process of the MGC. The method for synchronizing H. 248 protocol user states fully utilizes the original Service Change command and a key descriptor Service change Method in an H. 248 protocol and meets different states of the Termination by expanding the value of the Service change Method. The method for synchronizing H. 248 protocol user states can effectively solve the problem of the inconsistent Termination states of the MGC and the MGW and synchronize the Termination states of the MGW and the MGC, and the method for synchronizing H. 248 protocol user states can also ensure the stable operation of a system.

Description

The synchronous H.248 method of agreement User Status
Technical field
The present invention relates to the communications field, specifically, relate in the communications field method that MGC and MGW in the NGN system go up simultaneous user (Termination) state.
Background technology
Along with mobile communcations system in the increasingly extensive application of every field such as economic and social life, mobile communcations system technology itself is also among fast development, from at present just at widely used second generation mobile communcations system, arrive ripe perfect third generation mobile system, the demand of user for communication system satisfied in technical development day by day.3GPP of International Standards Organization (3rd GenerationPartnership project) and 3GPP2 (3rd Generation Partnership project 2) are responsible for the formulation and the modification of third generation mobile system international standard WCDMA standard and CDMA2000 standard respectively.In two types standard, H.248 agreement is extensively adopted by tissues such as 3GPP/3GPP2, as NGN (Next Generation Network: next generation network, as SOFTSWITCH/WCDMA/CDMA2000/TD-SCDMA) network carrying and the consensus standard that separates of control, H.248 agreement be mainly used in MGC (Media Gateway Control: Media Gateway Controller) and MGW (MediaGateway: gateway control media gateway) and carrying foundation are controlled.
In the application of agreement H.248, relate generally to keywords such as affairs, action and order, wherein, affairs are made up of some actions, and affairs have integrality, and action in the same affairs and order request order are carried out.Action is then formed by some command in combination, and action generally has concrete implication, and in particular cases, an action is made up of an order.Action is actually the sign of Management Information Base.Order is the base unit that MGC and MGW realize interactive information, comprises the various command parameter in the order.Wherein all orders all will contain parameter Termination ID, and the final operand of this order is exactly its Termination ID that carries.The variation of Termination ID state mainly is that the execution owing to corresponding this order forms.
Undertaken alternately by affairs between MGC and the MGW, can contain a plurality of contexts in each affairs, each context can contain a plurality of orders, the order meeting is operated the state of Termination, (the packet loss for example because some unpredictable factors, part operation is unusual etc.), operation through a series of complexity to the state of Termination, after mutual, entanglement may take place with the state of the Termination of MGW in MGC, the state that is Termination is inconsistent (for example for same Termination ID, state on MGC is for using, but the state on MGW can not use, MGC will produce fault when taking this Termination ID of MGW like this, causes unnecessary call loss).If it is inconsistent that MGW and MGC go up the state of Termination, can the generation systems disorder at this user's certain operations, though be in the case MGC or MGW all exigence with the state synchronized of Termination.And, find the prior art that the state synchronized of Termination can be got up by the inquiry of patent retrieval and open source literature, also in existing product, find relevant solution.
Summary of the invention
Technical problem to be solved by this invention provides a kind of synchronous H.248 method of agreement User Status, can't make the state of MGW and the last Termination of MGC keep inconsistent in the hope of overcoming prior art, the shortcoming of meeting generation systems disorder under some operation of user, thereby make MGW can be consistent, guarantee the stable operation of system with the state of the Termination between the MGC.
For achieving the above object, the present invention proposes a kind of synchronous H.248 method of agreement User Status, it is characterized in that, may further comprise the steps:
The state change of first aspect: Termination is detected under the situation by MGW, carries out following processing:
Change back (for example state can not use) takes place in the state that the first step: MGW detects Termination, offer MGC by Service Change order, crucial descriptor Service Change Method in the Service Change order is Forced, shows that this User Status can not use.
After second step: the MGC receives Service Change order, with the parameter S ervice Change Method decoding in the Service Change order, change User Status into described ServiceChange Method parameter indicated state, for example Service Change Method is that Forced then needs User Status is changed into can not user mode.
The state change of second aspect: Termination is detected under the situation by MGC, carries out following processing:
Change back (for example state can not use) takes place in the state that the first step: MGC detects Termination, by the synchronous Termination state of Service Change order request MGW.Crucial descriptor Service Change Method in the ServiceChange order is Forced, shows that this User Status can not use.
After second step: the MGW receives Service Change order, with the Service Change Method that analyzes in the Service Change order, change User Status into described Service ChangeMethod parameter indicated state, for example Service Change Method is that Forced need change state of user into can not user mode.
Under the situation of certain Termination state of monitoring that the third aspect: MGC is real-time, carry out following processing:
The first step: MGC is by the state of Termination among the Media that sends Audit and order the gateway of auditing.
Second step: gateway returns with it to the state of Termination in it is replied, and the Service States among the parameter Termination State among the Media during MGC replys by analysis comes the state of synchronous Termination.
Adopt the method for Termination state synchronization of the present invention, made full use of H.248 original Service Change order in the agreement, and crucial descriptor Service ChangeMethod.Under the necessary situation, can satisfy the different conditions of Termination by the value of expansion Service Change Method.Thereby effectively solve the Termination state inconsistent problem of MGC, reach the state synchronization of MGW, guaranteed the stable operation of system with the Termination between the MGC with MGW.
Description of drawings
To be Termination state change detect method flow diagram under the situation by MGW to Fig. 1.
To be Termination state change detect method flow diagram under the situation by MGC to Fig. 2.
Fig. 3 is MGC initiatively require to audit a method flow diagram under the Termination state status.
Embodiment
Below in conjunction with accompanying drawing, concrete enforcement of the present invention is described in further detail.
Introducing of following mask body for the synchronous embodiment of the state of MGC, MGW Termination:
Because MGW and MGC both sides we can say that keeping the state of Termination Termination is the resource of MGC with the common maintenance of MGW, this point is particularly evident to the Termination that is in the calling procedure.Generally speaking, MGW, MGC may change the state of Termination, and some is by the MGC active request, and MGW carries out this change according to the operation of MGC, and MGC can be consistent with the state of the Termination of MGW under this normal condition.But under certain abnormal conditions, MGC or MGW have changed the state of Termination voluntarily, need notify MGW or MGC timely, and be same, the state that MGW can detect Termination under some other situation has carried out transition, also needs MGW to notify MGC immediately.
The state of Termination changes and can be initiated by MGC, also can be initiated by MGW, will introduce processing method respectively below.
The state that Termination at first is described below changes by the detected processing of MGW, mainly contains following treatment step (as shown in Figure 1):
Fig. 1 is that the variation of the state of Termination is initiated by MGW, orders the state of informing this Termination of MGC that migration has taken place by Service Change.After MGC receives the next request message of MGW, operate accordingly by the value of resolving the Service Change Method in the Service Change order.If for example Service Change Method is Forced, the Termination state need be changed into can not use, if Restart need change its state into and can use.Specify as follows:
Change back (for example state can not use) takes place in the state that the first step: MGW detects Termination, offer MGC by Service Change order, crucial descriptor Service Change Method in the Service Change order is Forced, shows that this User Status can not use.
After second step: the MGC receives Service Change order, with the parameter S ervice Change Method decoding in the Service Change order, difference according to Method is handled accordingly, and for example Service Change Method is that Forced then needs User Status is changed into can not user mode.
MGW has just reached unanimity with the state of the Termination of MGC like this.
If same state of user is detected treatment step following (as shown in Figure 2) earlier by MGC:
Fig. 2 is that the variation of the state of Termination is initiated by MGC, orders the state of asking this Termination of MGW that migration has taken place by Service Change, and MGW also will move accordingly.After MGW received the next request message of MGC, the value of the ServiceChange Method in the Service Change order was operated accordingly.If for example Service Change Method is Forced, the Termination state need be changed into can not use, if Restart need change its state into and can use.Specify as follows.
Change back (for example state can not use) takes place in the state that the first step: MGC detects Termination, by the synchronous Termination state of Service Change order request MGW.Crucial descriptor Service Change Method in the ServiceChange order is Forced, shows that this User Status can not use.
After second step: the MGW receives Service Change order, with the Service Change Method that analyzes in the Service Change order, difference according to Service Change Method is handled accordingly, and for example Service Change Method is that Forced need change state of user into can not user mode.
MGW has just reached unanimity with the state of the Termination of MGC like this.
A bit be exactly the state (as shown in Figure 3) of certain Termination of monitoring that MGC can be real-time in addition:
Fig. 3 is the state of the Termination of MGC requirement audit MGW initiatively, issues band parameter Media in the Audit order.MGC receive that MGW comes at after the replying of this audit, operate accordingly by the value of resolving among the Media Termination State.If Service states is In Service, the Termination state is changed into and can use, if be Out Of Service, the Termination state is changed to and can not use.Specify as follows:
The first step: MGC is by the state of Termination among the Media that sends Audit and order the gateway of auditing.
Second step: gateway returns with it to the state of Termination in it is replied, and the Service States among the parameter Termination State among the Media during MGC replys by analysis comes the state of synchronous Termination.
According to above operational processes, can guarantee the state synchronization of MGW with the Termination between the MGC, guarantee the stable operation of system.

Claims (3)

1, a kind of synchronous H.248 method of agreement User Status is characterized in that, may further comprise the steps:
The state change of first aspect: Termination is detected under the situation by MGW, carries out following processing:
After the state that the first step: MGW detects Termination is changed, offer MGC by Service Change order;
After second step: the MGC received Service Change order, the parameter S ervice Change Method decoding with in the Service Change order changed User Status into described Service Change Method parameter indicated state;
The state change of second aspect: Termination is detected under the situation by MGC, carries out following processing:
After the state that the first step: MGC detects Termination is changed, by the synchronous Termination state of Service Change order request MGW;
After second step: the MGW received Service Change order, the Service Change Method with analyzing in the ServiceChange order changed User Status into described Service Change Method parameter indicated state;
Under the situation of certain Termination state of monitoring that the third aspect: MGC is real-time, carry out following processing:
The first step: MGC is by the state of Termination among the Media that sends Audit and order the gateway of auditing;
Second step: gateway returns with it to the state of Termination in it is replied, and the Service States among the parameter Termination State among the Media during MGC replys by analysis comes the state of synchronous Termination.
2, the synchronous H.248 method of agreement User Status according to claim 1, it is characterized in that, if the crucial descriptor ServiceChange Method in the described Service Change order is Forced, show that then this User Status can not use.
3, the synchronous H.248 method of agreement User Status according to claim 1 is characterized in that, if the crucial descriptor ServiceChange Method in the described Service Change order is Restart, shows that then this User Status is for using.
CNB2003101122135A 2003-11-17 2003-11-17 Method for synchronizing H.248 protocol user state Expired - Fee Related CN100359906C (en)

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Publication number Priority date Publication date Assignee Title
CN100571154C (en) * 2005-05-13 2009-12-16 中兴通讯股份有限公司 The method of a kind of global data dynamic synchronization between multimode
WO2007137515A1 (en) * 2006-05-11 2007-12-06 Huawei Technologies Co., Ltd. The method for mgc obtaining the bearer status, mgw, mgc and the system thereof
CN100466561C (en) * 2006-06-13 2009-03-04 华为技术有限公司 Method for deciding carried media gateway of media gateway controller
CN100546289C (en) * 2006-06-07 2009-09-30 华为技术有限公司 The auditing method of carrying end and system thereof
CN101299732B (en) * 2007-04-30 2011-11-16 华为技术有限公司 Circuit batch auditing method, medium gateway and medium gateway controller
CN101150544B (en) * 2007-10-25 2010-06-02 中兴通讯股份有限公司 A relay status check method
CN102752293A (en) * 2012-06-21 2012-10-24 中兴通讯股份有限公司 Method and system for implementing support of user line test in next generation network (NGN)

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WO2001097481A1 (en) * 2000-06-13 2001-12-20 Nokia Corporation System and method for controlling a media gateway
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