CN101098340B

CN101098340B - Method for implementing H.248 information compatibility

Info

Publication number: CN101098340B
Application number: CN200710111792XA
Authority: CN
Inventors: 宁冬子
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2007-06-08
Filing date: 2007-06-08
Publication date: 2012-05-23
Anticipated expiration: 2027-06-08
Also published as: CN101098340A

Abstract

The invention relates to a method for realizing H.248 message compatibility, which can effectively resolve the compatibility problem between MGW and MGC of H.248 protocol. The inventive method comprises that a media network gate controller successfully registers on a media network gate to send a command for setting control parameters to the media network gate, the control parameters are set as actively jumping or inactively jumping function pack, the media network gate feedbacks a setting answer to the media network gate controller, if the media network gate supports the active jumping function, the media network gate feedbacks a success setting message, or else, feedbacks an error answer, the media network gate executes setting command, according to the control parameters to judge if jumps over unknown function pack, and if the control parameters are set as actively jumping, the media network gate actively jumps over unknown function pack. The invention can confirm normal communication without affecting system stability, when MGC and MGW are not consistent.

Description

A kind of H.248 method of information compatibility that realizes

Technical field

The present invention relates to a kind of implementation method of information compatibility, specifically, relate in NGN in the communications field (next generation network) system on the MGC (Media Gateway Controller) and MGW (WMG) the H.248 implementation method of information compatibility.

Background technology

The ITU-T of International Standards Organization (ITU Telecommunication Standardization Sector, Telecommunication Standardization Sector of ITU are called for short ITU-T) is responsible for the formulation and the modification of the relevant telecommunication standard of telecommunication union.In the H.248 agreement of its formulation, defined the system and method for a cover MGC control MGW.H.248 agreement is through the function of the next continuous extension protocol of defined function bag, and the needed functional packet in different application scenarios is also different.H.248 agreement is widely applied to the core net of WCDMA (WCDMA)/CDMA2000 (CDMA 2000)/TD-SCDMA (Time Division-Synchronous Code Division Multiple Access)/SOFTSWITCH systems such as (soft switch) at present; Along with increasing of type of service, newly-increased functional packet connects more or less a hundred.H.248 the content of agreement has increased, and range of application has also enlarged, and has but brought the inter-communicating problem between different vendor's equipment thereupon.

Generally, when the MGW of different manufacturers and MGC butt joint, the tenability of MGW and MGC maybe be inconsistent, if MGC has sent the unsupported functional packet of MGW, MGW will report syntax error to MGC, causes call failure.Even same producer equipment; The tenability that can guarantee MGW and MGC is consistent; But in actual MGC and MGW device upgrade process, next MGC of normal conditions several MGW good at managing, and potential range is far between MGC and several MGW; Can't guarantee to upgrade simultaneously, it is normal so also to be difficult in the basic talk business of assurance during upgrading.

Industry has had been found that the H.248 above-mentioned defective of agreement; Formulated two kinds of methods and solved the intercommunication problem, first kind is the method for audit, and MGC is through the tenability of audit MGW; After the actual tenability that obtains MGW, do not send unsupported functional packet to evade the intercommunication problem to MGW; Second method is to make an appointment limit of power between MGW and the MGC in advance, and MGW and MGC carried out the negotiation of limit of power earlier before carrying out normal talking, and MGC does not send unsupported functional packet to MGW after the ability that obtains MGW.

Though above-mentioned two kinds of methods have solved the intercommunication problem; But there are following two shortcomings simultaneously: the one, supposition MGC can support identical negotiation ability simultaneously with MGW; But in fact; Because MGC and MGW in different occasions, receive the influence of factors such as distance and manpower, reality is to be difficult to guarantee that MGW and MGC have the identical negotiation ability of support in a short period of time; The 2nd, the compatible bypassing method of these two kinds of methods is finally all realized on MGC; MGC is during as call control protocol; May dock with different protocol, internal mechanism is also complicated than MGW, and H.248 the protocol function bag is a lot; The existing compatibility of historical facts or anecdotes can cause the inner realization of MGC more complicated, influences the resistance to overturning of equipment of the core network.

Summary of the invention

The technical problem that the present invention will solve has provided a kind of H.248 method of information compatibility property that realizes, uses this method and can effectively solve the inter-communicating problem between the MGW and MGC in the agreement H.248.

Functional packet research back through to agreement is H.248 found; H.248 functional packet is divided into basic bag and optional bag; Wherein basic bag is the functional packet that realizes that basic talk protocol must be supported; These functional packet are because technological comparative maturity, and protocol stabilizes property, interoperability are fine, and industry equipment has been realized these functional packet basically.Optional bag increases for additional function, as additional functions such as signaling tracing, resource from suspending inspection are provided, and the characteristics of these bags are not influence the basic call business.

According to this present situation, the present invention proposes a kind of method of H.248 protocol-compliant, main thought is to have under the situation of different tenabilities at MGC and MGW; MGW can discern basic bag; If run into Unidentified functional packet,, guarantee to converse and normally carry out not to MGC report syntax error; H.248 MGW uses the notification message of agreement to inform the MGC relevant information then, and MGC can open or close compatibility function according to negotiation with MGW simultaneously.

The realization of the present invention H.248 method of information compatibility may further comprise the steps:

The A Media Gateway Controller sends the order that Control Parameter is set to WMG after WMG is successfully registered, said Control Parameter is set to initiatively skip or initiatively do not skip Unidentified functional packet;

The said WMG of B returns to be provided with to said Media Gateway Controller and replys, if Unidentified functional packet is initiatively skipped in said WMG support, said WMG returns success the information of setting; If said WMG does not support initiatively to skip Unidentified functional packet, said WMG returns wrong responses;

The said WMG of C is carried out the said order that is provided with, and judges whether to skip Unidentified functional packet according to said Control Parameter, and for initiatively to skip Unidentified functional packet, then said WMG is initiatively skipped Unidentified functional packet as if said Control Parameter; If said Control Parameter is not for initiatively skipping Unidentified functional packet, then said WMG is to said Media Gateway Controller reporting errors information.

Above-mentioned realization is the method for information compatibility H.248; Wherein, in the steps A, said Control Parameter can be according to the needs setting of said Media Gateway Controller; If said Media Gateway Controller needs said WMG initiatively to skip Unidentified functional packet, then said Control Parameter is for initiatively skipping; If said Media Gateway Controller does not need said WMG initiatively to skip Unidentified functional packet, then said Control Parameter is not for initiatively skipping.

Above-mentioned realization is the method for information compatibility H.248, and wherein, WMG described in the step C is to said Media Gateway Controller reporting errors information, comprising carrying the functional packet tabulation that makes mistakes and adding locating information

Above-mentioned realization is the method for information compatibility H.248, and wherein, in the steps A, for initiatively to skip Unidentified functional packet, then said WMG initiatively reports Unidentified functional packet information to said Media Gateway Controller as if said Control Parameter.

Above-mentioned realization is the method for information compatibility H.248, and wherein, after receiving that said WMG is done the reporting message of skipping processing to Unidentified functional packet, whether said Media Gateway Controller decision receives the compatible processing of said WMG.

Above-mentioned realization is the method for information compatibility H.248; Wherein, After said WMG was initiatively skipped Unidentified functional packet, if reported this functional packet information to said Media Gateway Controller, then said WMG no longer reported Unidentified functional packet information to said Media Gateway Controller.

Compared with prior art, the invention provides a kind of H.248 method of information compatibility that realizes, simple and easy to do, under MGC and the inconsistent situation of MGW, guaranteeing converses normally carries out, and can not influence the stability of system.

Description of drawings

Fig. 1 is that MGW is to MGC register flow path figure;

H.248 the information compatibility flow chart of Fig. 2 the method for the invention.

Embodiment

Below in conjunction with accompanying drawing to H.248 information compatibility method further explain of a kind of realization of the present invention.

Fig. 1 is the MGW register flow path figure of agreement regulation H.248, may further comprise the steps:

Signaling link restoration between step 101:MGW and the MGC;

Step 102:MGW initiatively sends login request message to MGC;

Step 103:MGC sends registration reply message to MGW, and MGW receives after the sure registration reply message, gets into operating state.

Step 104:MGW and MGC use and H.248 carry out normal call flow, and at this moment if MGW receives Unidentified functional packet, MGW will return wrong replying to MGC, and calling can't be carried out.

Fig. 2 is that the present invention proposes H.248 information compatibility flow chart, may further comprise the steps:

Step 201:MGC is after MGW successfully registers, and whether transmission modification order, request MGW setting initiatively skip the upb attribute of unidentified bag and the upd incident that initiatively reports as if the unidentified bag of generation;

The definition of upb attribute is following in the said modification order:

Property Name: skip Unidentified functional packet

Attribute-bit: upb (0x0001)

Describe: specify MGW whether to skip Unidentified functional packet.

Type: logic

Value:

True (0x0000): MGW skips Unidentified functional packet automatically

False (0x0001): MGW does not skip Unidentified functional packet automatically and returns error message.

The definition of upb incident is following in the said modification order:

Time title: find Unidentified functional packet

Time marking: upd (0x0001)

Describe: the Unidentified functional packet that definition is found.

The event description parameter of being paid close attention to:

Functional packet ID inventory

Parameter title: functional packet ID inventory

Parameter identification: pil (0x0001)

Describe: the ID inventory of finding not know functional packet.

Type: enumerate

Possible value: the not knowledge functional packet ID tabulation of discovery.

Additional information

Parameter title: additional information

Parameter identification: ai (0x0002)

Describe: but the definition additional information is used for circulating a notice of the details of MGC compatibling problem.

Type: character type

Optional: as to be

Possible value: suggestion comprises text ID and Termination ID, and other Useful Informations also can add in the additional information.

Step 202:MGW returns to be provided with to MGC and replys; If MCW supports initiatively to skip the upb attribute of unidentified bag and the upd incident that initiatively reports unidentified bag; Then MGW returns success and replys; MGC can think that MGW calls out compatibility and mainly guaranteed by MGW, receive MGW Unidentified bag is done skip handle later reported event after, MGC according to actual conditions decision whether accept the compatible processing of MGW; If MGW does not support to be provided with the upb attribute of initiatively skipping unidentified bag and the upd incident that initiatively reports unidentified bag, then MGW returns wrong responses.

Step 203:MGW and MGC use and H.248 carry out normal call flow.

Step 204: if MGW receives Unidentified functional packet in calling procedure, and if initiatively skipping the upb attribute of unidentified bag is true, and MGC is provided with the incident upd that MGW initiatively reports, and then MGW does and skips processing, notifies the upd incident to MGC simultaneously.Alternatively, do not support when MGW finds certain functional packet, do skip processing after, once reported before finding simultaneously to MGC, can no longer report the upd incident of this incident to MGC.

The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims

1. realize the H.248 method of information compatibility for one kind, said method comprises step:

2. realization according to claim 1 is the method for information compatibility H.248; It is characterized in that; In the said steps A; Said Control Parameter can be according to the needs setting of said Media Gateway Controller, if said Media Gateway Controller needs said WMG initiatively to skip Unidentified functional packet, then said Control Parameter is for initiatively skipping; If said Media Gateway Controller does not need said WMG initiatively to skip Unidentified functional packet, then said Control Parameter is not for initiatively skipping.

3. realization according to claim 1 is the method for information compatibility H.248, it is characterized in that, WMG described in the said step C is to said Media Gateway Controller reporting errors information, comprising carrying the functional packet tabulation that makes mistakes and adding locating information.

4. realization according to claim 1 is the method for information compatibility H.248; It is characterized in that; In the said steps A; If said Control Parameter is for initiatively skipping Unidentified functional packet, and said Media Gateway Controller is provided with the upd incident that WMG initiatively reports, and then said WMG initiatively reports Unidentified functional packet information to said Media Gateway Controller.

5. realization according to claim 4 is the method for information compatibility H.248; It is characterized in that; After receiving that said WMG is done the reporting message of skipping processing to Unidentified functional packet, whether said Media Gateway Controller decision accepts the compatible processing of said WMG.

6. realization according to claim 4 is the method for information compatibility H.248; It is characterized in that; After said WMG is initiatively skipped Unidentified functional packet; If reported this functional packet information to said Media Gateway Controller, then said WMG no longer reports Unidentified functional packet information to said Media Gateway Controller.