CN1780229A - Method for soluting detained context on medium gateway - Google Patents
Method for soluting detained context on medium gateway Download PDFInfo
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- CN1780229A CN1780229A CN 200410091770 CN200410091770A CN1780229A CN 1780229 A CN1780229 A CN 1780229A CN 200410091770 CN200410091770 CN 200410091770 CN 200410091770 A CN200410091770 A CN 200410091770A CN 1780229 A CN1780229 A CN 1780229A
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- Prior art keywords
- media gateway
- contextual
- time
- detained
- context
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M7/00—Arrangements for interconnection between switching centres
- H04M7/12—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal
- H04M7/1205—Arrangements for interconnection between switching centres for working between exchanges having different types of switching equipment, e.g. power-driven and step by step or decimal and non-decimal where the types of switching equipement comprises PSTN/ISDN equipment and switching equipment of networks other than PSTN/ISDN, e.g. Internet Protocol networks
- H04M7/125—Details of gateway equipment
- H04M7/1255—Details of gateway equipment where the switching fabric and the switching logic are decomposed such as in Media Gateway Control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0852—Delays
- H04L43/0858—One way delays
Abstract
A method for preventing medium gateway from detaining context includes such steps as periodically sending predefined operation from medium gateway controller to medium gateway, recording the predefined operation time by medium gateway, regularly judging if the difference between current time and predefined operation time is greater than standard time, and recovering context if it is, or performing idle operation if it is not.
Description
Technical field
The present invention relates to the network communications technology, relate in particular to a kind of solution media gateway and be detained contextual method.
Background technology
H.248 agreement is called gateway control protocol again, be mainly used in the communications field to carry in the architecture system that is separated with control, and be the communication protocol between bearing bed and the key-course.At present, be widely used in next generation network NGN (Next Generation Network) field and 3G field.
H.248, two important notions are arranged in the agreement, and one is context, and another is an end points.End points comprises TDM termination, ATM endpoint, IP end points.Can think that above-mentioned end points is the main body of bearing bed, i.e. an external carrying of media gateway.And context is used to represent the contact between the above-mentioned end points, as the parameter of topological relation between the end points and medium mixing/exchange.
Carrying and controlling under the architectural framework that is separated, Media Gateway Controller and media gateway are separate equipment.Media Gateway Controller is realized control to carrying on the media gateway by the operational order at context and end points, get in touch owing to lack at contextual " shaking hands " between Media Gateway Controller and the media gateway, therefore, problem below the architectural framework of separation exists:
If the control core on the Media Gateway Controller breaks down, lost the contextual information on a certain media gateway, at this moment, Media Gateway Controller just can not trigger and reclaim contextual message, thereby can not make media gateway reclaim context, cause the contextual delay on the media gateway, at this moment, will cause end points and resource in the context to be taken for a long time, can not get discharging, when this phenomenon increases gradually, can become the side of body and influence normal professional.
In the prior art, in order to address the above problem, media gateway is cleared up the context of long-time delay automatically.This method is exactly a media gateway loop start timer, and all contexts are checked, the time of discovery context survival just reclaims this context after exceeding setup time automatically, and recycles end points and intermediary resources in the context.Particularly, as shown in Figure 1, in step 30, media gateway judges that context time-to-live (being the difference DELTA T between current time and the settling time T) Δ T is whether greater than setup time of system, if, then in step 40, media gateway reclaims context, and discharges its shared resource; Otherwise in step 50, media gateway is carried out do-nothing operation to context.
Yet, in technique scheme, at first, because the information interchange that there is no need between media gateway and the Media Gateway Controller, may cause the media gateway mistake that some normal service calls are interrupted, the private line service that need take for a long time for example, thus the carrying out of regular traffic influenced, reduced service quality.Secondly, in order to avoid wrong normal call is interrupted as far as possible, generally on the media gateway adopt long comparison time reference, be about to the system configuration time be provided with more as far as possible, like this, will cause the delay on the media gateway to call out the slow of recovery speed.
Summary of the invention
The objective of the invention is shortcoming, provide a kind of solution media gateway to be detained contextual method, thereby solved the context retention problems, and avoided wrong normal call is interrupted at above-mentioned prior art.
The invention provides a kind of solution media gateway and be detained contextual method, comprising:
A, Media Gateway Controller regularly regularly send scheduled operation by " access cycle " to media gateway;
The time of B, the recording scheduled operation of media gateway;
Whether C, media gateway judge the difference of time of scheduled operation of current time and context record greater than " criterion time " by " sense cycle ", if, then reclaim context, otherwise, carry out do-nothing operation.
Scheduled operation in the described steps A is to contextual empty retouching operation.
Do-nothing operation in the described steps A comprises audit operation and empty retouching operation.
Described " access cycle " is greater than the contextual mean survival time (MST) of media gateway.
The 8-12 of the contextual life cycle that described " access cycle " is media gateway doubly.
Described " criterion time " is greater than the contextual mean survival time (MST) of media gateway.
The 26-34 of the contextual mean survival time (MST) that described " criterion time " is media gateway doubly.
Described " sense cycle " is big or small arbitrarily.
Described " sense cycle " be substantially media gateway contextual mean survival time (MST) 18-22 doubly.
The present invention has adopted the resource verification mechanism between a kind of Media Gateway Controller and the media gateway, Media Gateway Controller at the context of survival regularly and media gateway communicate, media gateway regularly compares the difference Δ T of current time and the contextual time T of Media Gateway Controller last visit, if Δ T is greater than " criterion time ", then media gateway reclaims context, otherwise, keep existing contextual state, therefore, media gateway can regularly be reclaimed context in time, guaranteed the safety of bearing resource and encoding and decoding resource on the media gateway, regular traffic can not interrupted by media gateway abnormal on the media gateway thereby make yet.
Description of drawings
Fig. 1 is detained contextual flow chart for prior art solves media gateway;
Fig. 2 is detained contextual flow chart for solution gateway of the present invention.
Embodiment
Understand and realization the present invention the existing embodiments of the invention of describing in conjunction with the accompanying drawings for the ease of persons skilled in the art.
As shown in Figure 2, according to the present invention, owing to record the context with professional relevant media gateway on the Media Gateway Controller, in step 1, the context that the Media Gateway Controller needs have periodically been created on to media gateway every " access cycle " carries out scheduled operation.In step 2, when media gateway is received the scheduled operation message that Media Gateway Controller sends, note the time of receiving scheduled operation message.
Described scheduled operation can be the impregnable any operation of regular traffic that makes in the context; For example comprise any end points in the context is carried out empty retouching operation and end points in this context is carried out audit operation.
Described retouching operation can not operated context the operation of making amendment of the context on the media gateway yet.Specifically carrying out which type of retouching operation, is to explain by the descriptor that carries in the retouching operation.In the present embodiment, entrained descriptor is an empty descriptor in the retouching operation, and empty descriptor is represented to carry out do-nothing operation, that is to say to change former contextual state, and the context on the media gateway is still remained stationary.But media gateway has been noted the time of Media Gateway Controller access medium gateway.
Described audit operation is the operation of Media Gateway Controller access medium gateway status and each context state, purpose is for the relation between the state of understanding each end points in the context on the media gateway and each end points, but can not change the business on the media gateway; But media gateway has been noted the time of Media Gateway Controller access medium gateway.
Media gateway is regularly checked all contexts according to " sense cycle ", finds not have for a long time the context of Media Gateway Controller operation, just can reclaim this context, and discharge the shared resource of this context.
In step 3, media gateway periodically compares the difference Δ T of the time T of current time and the last access context of Media Gateway Controller every " sense cycle ", if Δ T is greater than " criterion time ", then in step 4, media gateway reclaims context, and discharges its shared resource, otherwise, in step 5, the context on the media gateway continues to occupy system resource, proceeds and its related service.
" access cycle " can be greater than or less than media gateway to contextual mean survival time (MST), and described contextual mean survival time (MST) is the statistical value of system to business, and general basis business experience data in the past obtain.
In the present embodiment, " access cycle " is set to about 10 times of contextual mean survival time (MST) on the media gateway, preferably, is set to " access cycle " in the 8-12 times of scope of contextual mean survival time (MST) on the media gateway.For example, the past according to this statistics of context on the media gateway, mean survival time (MST) is 1 minute, then " access cycle " of Media Gateway Controller be set at about 10 minutes.
" sense cycle " can be provided with according to the load of machinery systems of media gateway, can be set to arbitrary value.In the present embodiment, " sense cycle " is set to about 20 times with the contextual mean survival time, and preferably, " sense cycle " is set in the 18-22 scope with the contextual mean survival time.
" criterion time " is greater than " access cycle " of Media Gateway Controller.In the present embodiment, " criterion time " be " access cycle " 2-5 doubly.For example, be 10 minutes " access cycle " of Media Gateway Controller, and then " the criterion time " on the media gateway is 30 minutes.That is to say that " criterion time " is about 30 times of contextual mean survival time (MST) of media gateway, in the present embodiment, preferably, will be set to " criterion time " in the 26-34 times of scope of contextual mean survival time (MST) of media gateway.
Therefore, the present invention proposes the resource verification mechanism between a kind of Media Gateway Controller and the media gateway, be that Media Gateway Controller and media gateway communicate by above-mentioned time relationship, media gateway is reclaimed fast to context, guaranteed the safety of bearing resource and encoding and decoding resource on the media gateway, regular traffic can not interrupted by media gateway abnormal on the media gateway thereby make yet;
Though described the present invention by embodiment, those of ordinary skills know, without departing from the spirit and substance in the present invention, just can make the present invention that many distortion and variation are arranged, and scope of the present invention is limited to the appended claims.
Claims (9)
1. a solution media gateway is detained contextual method, it is characterized in that, comprising:
A, Media Gateway Controller regularly regularly send scheduled operation by " access cycle " to media gateway;
The time of B, the recording scheduled operation of media gateway;
Whether C, media gateway judge the difference of time of scheduled operation of current time and context record greater than " criterion time " by " sense cycle ", if, then reclaim context, otherwise, carry out do-nothing operation.
2. solution media gateway as claimed in claim 1 is detained contextual method, it is characterized in that, the scheduled operation in the described steps A is to contextual empty retouching operation.
3. solution media gateway as claimed in claim 2 is detained contextual method, it is characterized in that, the do-nothing operation in the described steps A comprises audit operation and empty retouching operation.
4. solution media gateway as claimed in claim 1 is detained contextual method, it is characterized in that, described " access cycle " is greater than the contextual mean survival time (MST) of media gateway.
5. solution media gateway as claimed in claim 4 is detained contextual method, it is characterized in that, the 8-12 of the contextual life cycle that described " access cycle " is media gateway doubly.
6. solution media gateway as claimed in claim 1 is detained contextual method, it is characterized in that, described " criterion time " is greater than the contextual mean survival time (MST) of media gateway.
7. solution media gateway as claimed in claim 6 is detained contextual method, it is characterized in that, the 26-34 of the contextual mean survival time (MST) that described " criterion time " is media gateway doubly.
8. solution media gateway as claimed in claim 1 is detained contextual method, it is characterized in that, described " sense cycle " is big or small arbitrarily.
9. solution media gateway as claimed in claim 8 is detained contextual method, it is characterized in that, described " sense cycle " be substantially media gateway contextual mean survival time (MST) 18-22 doubly.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410091770 CN1780229A (en) | 2004-11-26 | 2004-11-26 | Method for soluting detained context on medium gateway |
| PCT/CN2005/001920 WO2006056123A1 (en) | 2004-11-26 | 2005-11-15 | Method for processing the delay context in the media gateway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410091770 CN1780229A (en) | 2004-11-26 | 2004-11-26 | Method for soluting detained context on medium gateway |
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| Publication Number | Publication Date |
|---|---|
| CN1780229A true CN1780229A (en) | 2006-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200410091770 Pending CN1780229A (en) | 2004-11-26 | 2004-11-26 | Method for soluting detained context on medium gateway |
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| WO (1) | WO2006056123A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009000123A1 (en) * | 2007-06-25 | 2008-12-31 | Zte Corporation | Method for a media gateway controller controlling a media gateway preempting circuit source |
| CN101159955B (en) * | 2007-10-19 | 2010-12-08 | 中兴通讯股份有限公司 | Service quality measuring method and system based on media gateway control protocol network |
| CN101237361B (en) * | 2007-01-31 | 2011-01-05 | 中兴通讯股份有限公司 | A suspending death method for wireless network controller and B node communication context |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AUPR754001A0 (en) * | 2001-09-06 | 2001-09-27 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and system of enabling a generic telecommunications service in gateway control protocols |
| CN1265602C (en) * | 2002-12-19 | 2006-07-19 | 华为技术有限公司 | Media gateway controler and interacting method between media gateways |
| CN1315311C (en) * | 2003-01-28 | 2007-05-09 | 华为技术有限公司 | Method of transmitting end point in gatway context |
-
2004
- 2004-11-26 CN CN 200410091770 patent/CN1780229A/en active Pending
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- 2005-11-15 WO PCT/CN2005/001920 patent/WO2006056123A1/en active Application Filing
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237361B (en) * | 2007-01-31 | 2011-01-05 | 中兴通讯股份有限公司 | A suspending death method for wireless network controller and B node communication context |
| WO2009000123A1 (en) * | 2007-06-25 | 2008-12-31 | Zte Corporation | Method for a media gateway controller controlling a media gateway preempting circuit source |
| CN101330478B (en) * | 2007-06-25 | 2011-04-20 | 中兴通讯股份有限公司 | Method for controlling preemption of medium gateway circuit resource for medium gateway controller |
| CN101159955B (en) * | 2007-10-19 | 2010-12-08 | 中兴通讯股份有限公司 | Service quality measuring method and system based on media gateway control protocol network |
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| Publication number | Publication date |
|---|---|
| WO2006056123A1 (en) | 2006-06-01 |
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