CN100454827C - Method for preventing loss of digit reception - Google Patents
Method for preventing loss of digit reception Download PDFInfo
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- CN100454827C CN100454827C CNB200410007147XA CN200410007147A CN100454827C CN 100454827 C CN100454827 C CN 100454827C CN B200410007147X A CNB200410007147X A CN B200410007147XA CN 200410007147 A CN200410007147 A CN 200410007147A CN 100454827 C CN100454827 C CN 100454827C
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Abstract
The present invention discloses a method for preventing number reception loss, which is used for protecting the control of medium gateways and the number reception interaction of medium gateway controllers in the next generation networks. In the method, the medium gateways enable dialing storage areas for physical terminals corresponding to the current off-hook users before the number reception parameter interaction of the medium gateways and the medium gateways controllers; the order of numbers dialed by the off-hook users is stored in the dialing storage areas in a buffering mode; when medium gateways orderly match and report cache numbers and the number reception parameters sent by the medium gateway controllers starting from the first number in the storage areas.
Description
Technical field
The present invention relates to next generation network (NGN) technology, relate in particular to the method that in this NGN network, prevents to collect the digits and lose.
Background technology
Media Gateway Controller (MGC) and media gateway (MG) are two key members among the NGN.Consult shown in Figure 1ly, MGC is responsible for CCF, and MG is responsible for the service bearer function, realize by this calling out separating of control plane and service bearer plane, thereby abundant shared network resource, simplified apparatus upgrading and professional expansion, and reduce development and maintenance cost greatly.
MGCP is the main agreement of communicating by letter between MGC and the MG, present widely used have MeGaCo/H.248 and two kinds of agreements of MGCP.Various resources on the MG are terminal by abstract representation in these two kinds of agreements.Terminal is divided into physical terminal and ephemeral terminations again, and the former represents some physical entities with semipermanent existence, TDM passage etc. for example, the public resource that on behalf of some provisional application, the latter discharge with the back, for example rtp streaming etc.The handshaking procedure of calling out has just been represented in the operation on the terminal and the combination of terminal room.Mutual command messages by these two kinds of agreements between MGC and the MG carries out.Order some entrained parameter informations to be divided into classifications such as signal, incident, wherein signal is used to refer to the operation that MG carries out certain resource by MGC, for example put dialing tone, ring-back tone, busy tone etc. to the user, incident is used to refer to the monitoring that MG carries out certain state by MGC, for example monitor user ' off-hook, on-hook, hooking etc.
For the MG that directly has user interface, as access media gateway (AMG), guard station media gateway (RMG) or Integrated Access Device etc., receiving that subscriber dialing carries out The matching analysis and report MGC is that it participates in one of major function that call proceeding finishes.At the otherness that the unreliable and subscriber dialing of IP bearer network is operated, these MG just need possess the perfect protection scheme that collects the digits.
For this reason, MGCP has defined several figure (DigitMap) characterising parameter to be come subscriber dialing accumulated and collects the digits, thereby reduces interacting message and wait for time delay; Define the Dual Tone Multifrequency detected parameters again and come that unit is carried out in subscriber dialing and collect the digits, thereby satisfied the flexibility of number analysis.These parameters that collect the digits can satisfy call proceeding requirement generally.
Yet in abnormal conditions, above-mentioned protocol parameter can not solve the problem that collects the digits and lose fully.For example the DigitMap that issues as the unreliable MGC of causing of network loses, and when perhaps the very fast MGC of subscriber dialing has little time to issue DigitMap, MG can't in time receive subscriber dialing.When MGC need come segmentation to issue DigitMap according to subscriber dialing, in the interval of these segmentations, also there is the risk of the number of losing.
At present, addressed the above problem following two kinds of technical schemes:
Technical scheme one:
Utilize the nested mechanism of parameter of protocol definition to prevent to collect the digits and lose, back one situation that parameter can't in time issue that collects the digits after promptly finishing at the last parameter matching that collects the digits allows the MGC parameter that will back one collects the digits be nested in the last parameter that collects the digits and issue in the lump.Therefore, be taken in the last parameter that collects the digits when being in state of activation at MG, afterwards be in deactivated state once the parameter that collects the digits by nested, and in case MGC is finished and reported to the last parameter matching that collects the digits, afterwards be activated to receive user's follow-up dialing, as shown in Figure 2 by nested once the parameter that collects the digits.
Though this scheme can avoid waiting for the time delay of the follow-up parameter that collects the digits, can not be applicable to situation widely.For example in cluster (Centrex) business, MGC needs to issue number figure DigitMap1 characterising parameter in the group behind user's off-hook, if subscriber dialing is an outgoing prefix, then need to issue again the outer number figure of group DigitMap2 characterising parameter, if it is long-distance that the user goes out groupcall, the trunk call number then also needs to issue the DTMF detected parameters again and comes recruiting unit's dialing, because can't once be received foot probably.Yet the nested mechanism of agreement regulation parameter can only have one deck at most, so just can only select continuous two to realize nestedly in these three parameters, and does not still have the number of losing risk in the interval of nested parameter with another.
Technical scheme two:
Utilize the incident caching mechanism of protocol definition to prevent to collect the digits and lose, promptly may allow MGC indicate MG to set up the dialing that an incident buffer memory temporarily holds the user in advance faster than the situation of the parameter that collects the digits alternately between MGC and the MG at subscriber dialing.Like this on MG, every dialing of user all is appended to the end of this first-in first-out of incident buffer memory (FIFO) formation, when receiving collecting the digits during parameter from MGC, MG just searches for based on this buffer memory and mates, not enough number waits for that the user continues dialing, unnecessary number continues to be retained in buffer memory, as shown in Figure 3.
Though this scheme can make the operation that collects the digits issue and be separated with the parameter that collects the digits, but depend on and to start the incident caching mechanism in advance.Because the incident caching mechanism all is general to all protocol events, except all setting up the buffer queue for each physics or ephemeral terminations on the MG, also to there be relevant parameters to describe its mode of operation, for example buffer memory is closed or single step locks, enter screening conditions of buffer memory or the like, therefore it realizes more complicated, and is also bigger to overhead.Under normal conditions, MGC and MG do not realize or open this mechanism, so also just are difficult to rely on the mechanism that its realization collects the digits and protects.
Summary of the invention
The invention provides a kind of method that prevents to collect the digits and lose, to solve abnormal conditions can not being handled fully or realizing too complicated problems of existing in the prior art.
For addressing the above problem, the present invention adopts the protection mechanism that collects the digits of MG active cache subscriber dialing to prevent to collect the digits to lose, and its technical scheme is as follows:
A kind of method that prevents to collect the digits and lose, this method is:
Media gateway (MG) collected the digits parameter alternately with Media Gateway Controller (MGC) before, MG was for to enable dial storage area with the corresponding physical terminal of current off-hook user;
The numerical order that described off-hook user is transferred to is cached to described dial storage area; And
The first beginning of the number of MG from the memory block, the parameter matching and report MGC of collecting the digits that successively buffer memory number and MGC is issued.
Wherein:
When system initialization, distribute a dial storage area for each user statically; Perhaps trigger MG and dynamically set up a dial storage area for this off-hook user by off-hook event.
MG further will remove with the number of the parameter matching success that collects the digits in the dial storage area.
If the number number in the dial storage area is not enough when inferior coupling, then wait for user's follow-up dialing.
If wait timeout is then reported unusually to MGC by MG; When reporting unexpected message, report the number that the match is successful, and it is removed from dial storage area.
If the number number in the dial storage area satisfies when inferior coupling, then how matching result all reports the number that the match is successful, and it is removed from dial storage area.
If also have unnecessary number in the dial storage area, then keep and wait and the follow-up parameter that collects the digits that issues are mated when time the match is successful.
If described dial storage area adopts the static allocation mode, then after this call proceeding, empty described dial storage area.
If described dial storage area adopts the dynamic assignment mode, then after this call proceeding, discharge described dial storage area.
When user's hooking or Media Stream are activated, empty described dial storage area.
Described dial storage area is a fifo queue.
The present invention receives dialing and MGC with MG and issues the parameter that collects the digits and keep apart mutually, and collect the digits operation and coupling scan also relatively independent carrying out.The last user's of MG dialing directly enters the dialing buffer memory, thereby does not have the risk of losing again, and MGC issues number figure according to the subscriber dialing segmentation and waits the parameter that collects the digits also unrestricted again; And MGC need not to do the change of any control flow substantially, and MG has adopted a simple buffer memory.
The present invention has taken into full account deferring to and in realization simplification agreement; by the protection mechanism that collects the digits of MG active cache subscriber dialing, the number of losing risk unreliable for the IP bearer network and that the subscriber dialing difference in operation is brought provides a kind of simple effectively solution.This mechanism realizes in that MG is inner, can not increase the complexity of protocol interaction between MG and the MGC, thus in intercommunication also tool have great advantage.
Description of drawings
Fig. 1 is the networking schematic diagram of MG and MGC among the NGN;
The schematic diagram of Fig. 2 for utilizing the nested mechanism of parameter to prevent to collect the digits and lose in the prior art;
The schematic diagram of Fig. 3 for utilizing the incident caching mechanism to prevent to collect the digits and lose in the prior art;
The schematic diagram that Fig. 4 prevents to collect the digits and loses for MG active cache of the present invention subscriber dialing
Embodiment
The present invention is before MG and MGC collect the digits parameter alternately, and MG will be initialized as empty dial storage area for enabling one with the corresponding physical terminal of current off-hook user, with user's Outgoing Number order buffer memory.It is best that first in first out (FIFO) formation is adopted in this memory block, and user's dialing will constantly be appended to the end of this fifo queue.
The distribution of dial storage area can be adopted following dual mode:
The static allocation mode: when system initialization, MG is last just all to be fixed application and distributes a dial storage area for the corresponding physical terminal of each user, and is that the user is used in running always.Finish when call and then to empty this dial storage area.
The dynamic assignment mode: just dynamically be its application and distribution dial storage area when certain user's off-hook, be that the user is used in the call process temporarily.Finish when call and then to discharge this dial storage area.
Consult shown in Figure 4ly, issuing twice number figure characterising parameters with MGC is example, and its implementation procedure is as follows:
1, user's off-hook, this off-hook event trigger MG and go up to distributing fifo queue with the corresponding physical terminal of this user.
2, MG is appended to the number of user's dial-out at the end of fifo queue.
3, MGC issues number figure DigitMap1 characterising parameter to MG in the process that collects the digits.
4, after MG receives number figure DigitMap1 characterising parameters, begin characterising parameter and number are mated, after having mated parameter, report MGC, number dequeue of current coupling in the matching process from the head of the queue of fifo queue.
5, MGC can not once receive sufficient number, then issues number figure DigitMap2 characterising parameter to MG.
6, MG receives behind the number figure DigitMap2 characterising parameters that set by step the mode in 4 mates, and reports MGC after having mated parameter.
When 7, user's hooking or Media Stream were activated, MG just emptied the number that has accumulated in the buffer memory.
8, MGC collect the digits finish after replay call, MG is released to the fifo queue of active user's dynamic assignment.
Can receive sufficient number if MGC once issues several figure characterising parameters, then said process does not comprise step 5,6.
If MGC can't receive sufficient number after issuing number figure DigitMap2 characterising parameters, then after step 6, also can continue to issue more DigitMap characterising parameters or the DTMF detected parameters collects the digits.
No matter MGC issues DigitMap characterising parameter or DTMF detected parameters, if the number number in the buffer memory is not enough to satisfy this coupling, that just continues to wait for user's follow-up dialing.Overtime then reporting unusually reports and removes the number that has mated simultaneously if dial.
If the number number in the buffer memory can satisfy this coupling, so no matter matching result is success or failure, and MG reports and remove the number that has mated.If also have unnecessary number in the fifo queue after once coupling is finished, then continue to be retained in and wait for coupling next time in the formation.
Whenever MGC receives after foot carries out the dialing of call proceeding interimly, the MG dialing buffer memory that just resets, for example when user's hooking or Media Stream were activated, MG just emptied the dialing that has accumulated in the buffer memory.
In case the user's on-hook on the MG is just cancelled current dialing buffer memory with the corresponding physical terminal of this user interface.
The present invention's caching mechanism protection that realizes collecting the digits of initiatively taking to dial on MG can be avoided the unreliable number of the losing risk of bringing with the subscriber dialing difference in operation of IP bearer network.
Claims (14)
1, a kind of method that prevents to collect the digits and lose is characterized in that this method is:
Before media gateway MG and media gateway controller MGC collected the digits parameter alternately, MG was for to enable dial storage area with the corresponding physical terminal of current off-hook user;
The numerical order that described off-hook user is transferred to is cached to described dial storage area; And
The first beginning of the number of MG from the memory block, the parameter matching and report MGC of collecting the digits that successively number of buffer memory and MGC is issued.
2, the method for claim 1 is characterized in that, distributes a dial storage area for each user statically when system initialization; Perhaps trigger MG and dynamically set up a dial storage area for this off-hook user by off-hook event.
3, method as claimed in claim 1 or 2 is characterized in that, MG further will remove with the number of the parameter matching success that collects the digits in the dial storage area.
4, the method for claim 1 if the number number in the dial storage area is not enough when inferior coupling, is then waited for user's follow-up dialing.
5, method as claimed in claim 4 is characterized in that, if wait timeout is then reported to MGC by MG unusually.
6, method as claimed in claim 5 is characterized in that, when reporting when unusual, the number that the match is successful is reported and it is removed from dial storage area.
7, the method for claim 1 is characterized in that, if the number number in the dial storage area satisfies when inferior coupling, then how matching result all reports the number that the match is successful, and it is removed from dial storage area.
8, the method for claim 1 is characterized in that, if also have unnecessary number in the dial storage area when time the match is successful, then keeps and wait and the follow-up parameter that collects the digits that issues are mated.
9, method as claimed in claim 2 is characterized in that, if described dial storage area adopts the static allocation mode, then empties described dial storage area after this call proceeding.
10, method as claimed in claim 2 is characterized in that, if described dial storage area adopts the dynamic assignment mode, then discharges described dial storage area after this call proceeding.
11, the method for claim 1 is characterized in that, when user's hooking or Media Stream are activated, empties described dial storage area.
12, method as claimed in claim 2 is characterized in that, when MG dynamically sets up dial storage area for the off-hook user, if user's on-hook then discharges this dial storage area.
13, the method for claim 1 is characterized in that, described dial storage area is a fifo fifo formation.
14, method as claimed in claim 13 is characterized in that, when enabling described fifo queue it is initialized as sky.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410007147XA CN100454827C (en) | 2004-02-28 | 2004-02-28 | Method for preventing loss of digit reception |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200410007147XA CN100454827C (en) | 2004-02-28 | 2004-02-28 | Method for preventing loss of digit reception |
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| CN1661969A CN1661969A (en) | 2005-08-31 |
| CN100454827C true CN100454827C (en) | 2009-01-21 |
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| CNB200410007147XA Expired - Fee Related CN100454827C (en) | 2004-02-28 | 2004-02-28 | Method for preventing loss of digit reception |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101552846B (en) * | 2008-03-31 | 2013-03-20 | 华为技术有限公司 | Method and device for processing dialing information in media stream |
| CN101552700B (en) * | 2008-04-01 | 2011-03-23 | 华为技术有限公司 | Report control method and device for matching result |
| CN101350862B (en) * | 2008-08-26 | 2012-01-11 | 中兴通讯股份有限公司 | Method and system for implementing number-receiving based on location |
| CN101483703B (en) * | 2008-12-26 | 2011-03-16 | 中兴通讯股份有限公司 | Number receiving method based on media gateway control protocol |
| CN103428322B (en) * | 2013-06-24 | 2017-04-26 | 深圳市共进电子股份有限公司 | Method of collecting user key press and network voice communication terminal |
| CN117376467A (en) * | 2022-06-30 | 2024-01-09 | 深圳市中兴微电子技术有限公司 | Data processing method, device and computer storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1191765A2 (en) * | 2000-09-22 | 2002-03-27 | Alcatel | Method for Media Gateway Control |
| CN1452347A (en) * | 2002-04-20 | 2003-10-29 | 深圳市中兴通讯股份有限公司 | Method for detecting medium gateway controller and medium between-gateways link state |
| CN1457182A (en) * | 2002-05-10 | 2003-11-19 | 北京艾尼通科技有限公司 | Method for reliable message transmission mechanism for media gate control protocol |
| EP1388998A1 (en) * | 2003-04-03 | 2004-02-11 | Siemens Aktiengesellschaft | Method and access node for transmission of modulated carrier signals in packet oriented networks |
-
2004
- 2004-02-28 CN CNB200410007147XA patent/CN100454827C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1191765A2 (en) * | 2000-09-22 | 2002-03-27 | Alcatel | Method for Media Gateway Control |
| CN1452347A (en) * | 2002-04-20 | 2003-10-29 | 深圳市中兴通讯股份有限公司 | Method for detecting medium gateway controller and medium between-gateways link state |
| CN1457182A (en) * | 2002-05-10 | 2003-11-19 | 北京艾尼通科技有限公司 | Method for reliable message transmission mechanism for media gate control protocol |
| EP1388998A1 (en) * | 2003-04-03 | 2004-02-11 | Siemens Aktiengesellschaft | Method and access node for transmission of modulated carrier signals in packet oriented networks |
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