CN1874351B - Method for implementing automatic congestion control - Google Patents
Method for implementing automatic congestion control Download PDFInfo
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- CN1874351B CN1874351B CN2006100334417A CN200610033441A CN1874351B CN 1874351 B CN1874351 B CN 1874351B CN 2006100334417 A CN2006100334417 A CN 2006100334417A CN 200610033441 A CN200610033441 A CN 200610033441A CN 1874351 B CN1874351 B CN 1874351B
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- 230000000903 blocking effect Effects 0.000 claims description 16
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- 230000000977 initiatory effect Effects 0.000 abstract 1
- 230000008569 process Effects 0.000 description 12
- 230000000875 corresponding effect Effects 0.000 description 7
- 238000004891 communication Methods 0.000 description 6
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Abstract
The method comprises: a) the congested exchange receives an initiation address message or a call-establishing request message from the congestion-controlling exchange; b) the congested exchange sends a message carrying automatic congestion parameters to the congestion-controlled exchange; c) the congestion-controlling exchange receives the message carrying the automatic congestion parameters, and in term of the parameters sets the ratio for limiting the call, and then in term of the ratio for limiting the call, limits the call for the congested exchange.
Description
Technical field
The interexchange that the present invention relates to the communications field is realized automatic congestion control method, more particularly, relates to and under ISDN User Part, Bearer Independent Call Control Protocol and soft exchanging system, realizes automatic congestion control method among the H323.
Background technology
ISDNYong Hubufen (ISUP) is a kind of main agreement of SS7/C7 signaling system, has defined agreement and program and has been used for setting up, manages and discharges repeat circuit, and this repeat circuit is gone up the transmission voice and data call at PSTN (PSTN).ISUP is applicable to isdn call and non-isdn call.
And now, a lot of International Standards Organization are all in the standard of being devoted to formulate next generation network (NGN).As the asymmetric agreement in the NGN agreement; With the call control protocol (Bearer Independent Call Control Protocol) of bearer independent by ISDN User Part evolution; Accomplish standardization by ITU-TSG11 group; It provides the N-ISDN business of supporting to be independent of bearing technology and signaling tranmission techniques, and Bearer Independent Call Control Protocol belongs to application layer control protocol, can be used for foundation, modification, terminating call.
No matter be in ISUP, still in BICC, all can relate to automatic congested control business realization process.When a certain exchange is in overload state (calling this exchange in the following text is congested office); Need to use congested robot brain system to alleviate the defined congested two-stage that is divided into of Bearer Independent Call Control Protocol and ISDN User Part: slight congestion threshold (congested level 1) and heavy congestion thresholding (congested level 2).
If reach in these two congestion thresholds, then in all release messages that this congested office produces, to increase the automatic congestion level parameter.This automatic congestion level parameter to contiguous exchange show congested rank (as, congested level 1 or congested level 2).Contiguous exchange (calling congested control office in the following text) should reduce to the call business load of congested office when receiving the release message that comprises the automatic congestion level parameter.
If through after the automatic congested control procedure, normal traffic load is got back to by this congested office, then no longer comprises the other parameter of automatic congestion level in its release message.Then contiguous congested control office gets back to normal condition automatically behind preset time
It is congested that the automatic congestion parameter that carries in through release message when congested control office learns that adjacent office takes place, and then through pre-configured call restriction rate congested office carried out call blocking.
According to existing method, congested control office can only come through pre-configured call restriction rate congested office limit exhales.And this limit is exhaled and can not be connected with the truth of congested office.
And H.323 be (the International Telecommunications Union-Telecommunications Standardization section of standardization department of international telecommunication union telecommunication; Abbreviation ITU-T) IP (the Internet Protocol that proposes; Internet protocol) network real-time multimedia communication standard protocol family; Form by series of protocols such as calling out control, media coding, management control and conference communication; Not only comprise the application of IP phone, but also comprise that IP video and data are used and multimedia conferencing is used.Its main purpose is the multimedia communication between the terminal of realizing in heterogeneous networks.
Yet growing along with multimedia communication; The congestion condition of each innings will be serious day by day also in the multimedia communications system; But still can't control automatically in the H323 agreement under soft exchanging system at present the congestion condition of each innings; Make when the flow congestion situation appears in adjacent each interoffice, can not realize congested control with regulating through the various set inside of system.
Summary of the invention
The technical problem that the present invention will solve is, provides a kind of realization automatic congestion control method, and congested office can tell congested control office call restriction rate according to the congestion situation of self, reduces the traffic load of congested office.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be: provide a kind of realization automatic congestion control method, comprising: (a) congested office receives initial address message or call setup request message from congested control office; (b) the congested control office of congested office direction sends the message that carries automatic congestion parameter, and the said message that carries automatic congestion parameter is release message, release end or application transport mechanism message; (c) congested control office receives this and carries the message of automatic congestion parameter; According to this automatic congested ginseng call restriction rate is set; By this call restriction rate congested office is carried out call blocking; In the wherein said automatic congestion parameter indicating bit is set, it is other parameter of automatic congestion level or automatic congested percentage parameter that this indicating bit is used for this automatic congestion parameter of indication; When release message or discharge and not carry the other parameter of automatic congestion level or said automatic congested percentage parameter in the end when being 0, congested control office stops congested office is carried out call blocking; Saidly congested office is carried out call blocking comprise call tear down or route the call to contiguous idle exchange.
In the automatic congestion control method of realization of the present invention; Said automatic congestion parameter is the other parameter of automatic congestion level; Comprise slight congestion threshold and heavy congestion thresholding, the call restriction rate of corresponding said slight congestion threshold of said congested control office configuration and heavy congestion thresholding.
In the automatic congestion control method of realization of the present invention, said automatic congestion parameter is automatic congested percentage parameter, said congested control office with this automatic congested percentage parameter as call restriction rate.
In the automatic congestion control method of realization of the present invention, the message that carries automatic congestion parameter described in the step (b) is to be sent by the congested control office of congested office direction when receiving from the initial address message of congested control office or setting up request message in congested office.
In the automatic congestion control method of realization of the present invention, the message that carries automatic congestion parameter described in the step (b) is sent by the congested control office of congested office direction during Called Onhook behind end of calling.
The automatic congestion control method of the realization of embodiment of the present invention has following beneficial effect: automatic congestion parameter can carry according to the true congestion situation of self in congested office in institute's message transmitted; Notify congested control office needed call restriction rate; Congested control office carries out automatic congested control with this call restriction rate to congested office, reduces to the traffic load of congested office, thereby realizes the automatic congested control to congested office; Avoid congested office system congested, the normal operation of safeguards system.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the flow chart that the present invention realizes first embodiment of automatic congestion control method;
Fig. 2 is the flow chart that the present invention realizes second embodiment of automatic congestion control method;
Fig. 3 is the flow chart that the present invention realizes the 3rd embodiment of automatic congestion control method;
Fig. 4 is the flow chart that the present invention realizes the 4th embodiment of automatic congestion control method;
Fig. 5 is the flow chart that the present invention realizes the 5th embodiment of automatic congestion control method;
Fig. 6 is the flow chart that the present invention realizes the 6th embodiment of automatic congestion control method.
Embodiment
At first as follows with the technical term explanation that relates among the present invention:
Automatic congested control is professional: be meant when the flow of going to certain office direction excessive and when causing the speech channel load excessive, initiate by congested exchange takes place, and cooperate the automatic flow control of accomplishing professional by adjacent exchange.
The Q.763 standard relevant with ISUP reaches in the Q.1902.3 standard of being correlated with BICC the other parameter of automatic congestion level done similar description.Its data format can be with reference to as follows:
Wherein:
In the present invention; Can utilize the definition of the other parameter field of top automatic congestion level; For example define the expression of 00000000～01100100 in this parameter 0%～100%; 00000000 (0%) expression need not to limit to congested office and exhales, and 01100100 (100%) expression needs the all-calls of restriction to congested office.For with present hardware compatibility, also can keep 00000001,00000010 definition, represent 0～100 with other value.Be appreciated that for, characterize congested office Congestion Level SPCC with specifically being provided with of this byte, be that example is described with 00000000～01100100 expression 0%～100% below.
As shown in Figure 1, show the flow chart that the present invention realizes first embodiment of automatic congestion control method; Wherein, This congested office can control through software parameter; When its receive initial address message from congested control office (be contiguous exchange) (initial address message, IAM) after, include information such as calling number and called number in this IAM message.If this moment, there was congested situation in congested office; Congested office can send one immediately and carry the automatic congestion parameter release message of (representing with percentage) (release message; REL) give this congested control office, notify this congested control office, its traffic load has occurred congested and Congestion Level SPCC; And congested control office as call restriction rate, carries out call blocking to the percentage parameter value in the automatic congestion parameter in the REL message to congested office after receiving this release message, promptly initiates the process of automatic congested control.For example, suppose automatic congestion parameter in the release message for " 00011110 ", then in the present embodiment, it be 30% that its expression needs the call restriction rate to congested office, and this moment, congested control office should limit 30% of the calling that arrives congested office.For example it can limit the lower calling of priority ratio, makes it can not arrive congested office.So-called limit is exhaled and is meant that can't help congested office bears traffic load, so it is not limited to call tear down, comprises that also the not congested exchange of free time that limited calling is routed to other accomplishes calling procedure.No longer have automatic congestion parameter up to REL message, when perhaps congestion parameter was 00000000 (0%) automatically, just cancellation was exhaled process to the limit of congested office, and normal traffic load is got back to by the congested office of this moment.
As shown in Figure 2, show the flow chart that the present invention realizes second embodiment of automatic congestion control method; Wherein, first implement maximum difference and be that the opportunity that said congested office sends REL message is different among itself and Fig. 1.Its detailed process is: this congested office receive initial address message from congested control office (initial address message, IAM) after, the congested control office of congested office direction beams back Address Complete Message (Address Complete Message; ACM) and response message (Answer Message; ANM) etc., behind end of calling, during Called Onhook, just send a REL message that carries automatic congestion parameter (percentage parameter) and give this congested control office; Notify this congested control office; Its traffic load has occurred congested and Congestion Level SPCC (being represented by the percentage parameter), and congested control office is after receiving this release message, the percentage parameter value in the automatic congestion parameter in the REL message as call restriction rate; Congested office is carried out call blocking, promptly initiate the process of automatic congested control.No longer have automatic congestion parameter up to REL message, when perhaps congestion parameter was 00000000 (0%) automatically, just cancellation was exhaled process to the limit of congested office, and normal traffic load is got back to by the congested office of this moment.
In other embodiments of the invention, congested office also can adopt application transport mechanism message (Application Transport Mechanism APM) carries and need limit the percentage information of exhaling to notify congested control office.
In Fig. 3 and Fig. 4, show the flow chart that the present invention realizes the 3rd and the 4th embodiment of automatic congestion control method; Because Bearer Independent Call Control Protocol and ISUP all can utilize APM message to transmit customizing messages.So in the present embodiment; In APM message, carry the automatic congestion parameter (using the percentage parametric representation) of expression Congestion Level SPCC; Congested office sends to congested control office with this APM message; Inform that this congested office has taken place congested and Congestion Level SPCC, congested control office, limits congested office and to exhale as call restriction rate according to this percentage parameter.This APM message can be after IAM message be received by congested office, and REL message is sent to the transmission whenever before the congested control office.Wherein, Fig. 3 shows congested office after receiving IAM message, immediately APM message is sent to congested control office and sends the flow chart that REL message is taken out stitches and handled; Fig. 4 shows congested office after receiving IAM message, and just this APM message is sent to congested control office after sending ACM message, ANM to congested control office, and etc. just send the flow chart that REL message is taken out stitches and handled during called first on-hook.Its flow process and Fig. 1 and Fig. 2 are similar, so repeating no more.
In addition; Can carry " automatic congestion level is other " parameter (comprising congested level 1 and congested level 2) according to existing standard in REL message; And the call restriction rate of corresponding said congested level 1 of congested control office configuration and congested level 2 is used for having taken place congested to this congested office of congested control office notice; And outside not among some embodiment, this REL message can not carried " automatic congestion level is other " parameter yet, notifies congested control office that congested and congested degree takes place by APM message fully.
In Fig. 3 and Fig. 4, receive APM message when congested control office, the limit that reads in the APM message exhales percentage as call restriction rate, and congested office is carried out call blocking, promptly initiates automatic congested control procedure.Percentage parameter in the automatic congestion parameter of APM message be 0 or REL message no longer have the other parameter of automatic congestion level, just stop the process of exhaling is limit by congested office, get back to normal traffic load congested innings of this moment.
As shown in Figure 5, be the flow chart that the present invention realizes the 5th embodiment of automatic congestion control method.In this embodiment, show a kind of under soft exchanging system the H323 relaying realize the flow process of automatic congested control.When congested office has congested situation; As receive setup requests (SETUP) message from congested control office; Send the release that carries automatic congestion parameter immediately and finish (ReleaseComplete) message to congested control office, notify congested control office local exchange to take place congested.Congested control office receives this ReleaseComplete message, according to wherein the corresponding call restriction rate of automatic congestion parameter, carry out call blocking to congested innings.
Wherein, congestion parameter can be the other parameter of automatic congestion level automatically, also can be automatic congested percentage parameter, and the setting of wherein automatic congested percentage parameter can be referring to aforementioned explanation to Fig. 1.When automatic congestion parameter is the other parameter of automatic congestion level, can comprise slight congestion threshold (congested level 1) and two congestion levels of heavy congestion thresholding (congested level 2), can certainly comprise plural rank.
In order to distinguish this two kinds of automatic congestion parameters, can be used to indicate the type of this automatic congestion parameter in the congestion parameter indicating bit being set automatically.
When congested control office receives the ReleaseComplete message that carries automatic congestion parameter; Corresponding dissimilar automatic congestion parameters and other call restriction rate of parametric degree thereof according to the local exchange configuration; Congested office is carried out the corresponding call restriction, realize automatic congested control congested office.For example; When automatic congestion parameter was other parameters of automatic congestion level, the call restriction rate of congested grade 1 of the configurable correspondence of congested control office, congested level 2 was according to the rank of the other parameter of the automatic congestion level that receives; Adopt corresponding call restriction rate, congested office is carried out call blocking; When automatic congestion parameter is automatic congested percentage parameter; Congested control office can be with the percentage parameter value of automatic congested percentage parameter as call restriction rate; Congested office is carried out call blocking; The automatic congested percentage parameter that for example ought receive is 00011110 (30%), and the call restriction rate of congested control office also just should be 30% mutually, and at this time congested control office should limit the congested office of call arrival of 30% pair of congested office.
After congested control office started the respective call restriction to congested office, when in ReleaseComplete message, no longer carrying automatic congestion parameter, congested control office just stopped the call blocking to congested office.In addition, when the automatic congestion parameter that carries was automatic congested percentage parameter, congested control office also can stop congested office is carried out call blocking when this parameter is 00000000 (0%).
As shown in Figure 6, be the flow chart that the present invention realizes the 6th embodiment of automatic congestion control method.In this embodiment, show the flow process that another kind H323 relaying under soft exchanging system is realized automatic congested control.The difference of itself and the 5th embodiment is; When congested office has congested situation; As receive setup requests (SETUP) message from congested control office; Be not to send the release carry automatic congestion parameter immediately to finish (ReleaseComplete) message to congested control office, but behind end of calling, just send ReleaseComplete message to the congested control office that carries automatic congestion parameter during Called Onhook, notify congested control office local exchange to take place congested.Its detailed process is explained as follows:
When the congested office that has congested situation receives the call setup request message from congested control office; Send call progress (Call Proceeding) message to congested control office; And simultaneously to called transmission call setup request message; After treating called terminal ringing, send prompting (Alerting) message to congested control office.After this reminder message is received by congested control office, produce ring-back tone, called off-hook, the congested control office of congested office direction sends and connects (Connect) message.This connection message is received by congested control office, connects caller, carries out capabilities exchange (TCS terminal capabilities set, TCS ACK terminal capabilities set is confirmed) between simultaneously congested office and the congested control office.After this, carry out the principal and subordinate between congested office and the congested control office and confirm, open logical channel (OpenLogical Channel Process), carry out media delivery.When treating behind the whole end of calling Called Onhook, congested office sends ReleaseComplete message to the congested control office that carries automatic congestion parameter, notifies congested control office local exchange to take place congested.Congested control office receives this ReleaseComplete message, according to wherein the corresponding call restriction rate of automatic congestion parameter, carry out call blocking to congested innings.
Utilize method provided by the present invention, automatic congestion parameter can carry according to the true congestion situation of self in congested office in institute's message transmitted; Notify congested control office needed call restriction rate; Congested control office carries out automatic congested control with this call restriction rate to congested office, reduces to the traffic load of congested office, thereby realizes the automatic congested control to congested office; Avoid congested office system congested, the normal operation of safeguards system.
Claims (5)
1. realize automatic congestion control method for one kind, it is characterized in that, comprising:
(a) congested office receives initial address message or call setup request message from congested control office;
(b) the congested control office of congested office direction sends the message that carries automatic congestion parameter, and the said message that carries automatic congestion parameter is release message, release end or application transport mechanism message;
(c) congested control office receives this and carries the message of automatic congestion parameter; According to this automatic congestion parameter call restriction rate is set; By this call restriction rate congested office is carried out call blocking; In the wherein said automatic congestion parameter indicating bit is set, it is other parameter of automatic congestion level or automatic congested percentage parameter that this indicating bit is used for this automatic congestion parameter of indication;
When release message or discharge and not carry the other parameter of automatic congestion level or said automatic congested percentage parameter in the end when being 0, congested control office stops congested office is carried out call blocking;
Saidly congested office is carried out call blocking comprise call tear down or route the call to contiguous idle exchange.
2. the automatic congestion control method of realization according to claim 1; It is characterized in that; Said automatic congestion parameter is the other parameter of automatic congestion level; Comprise slight congestion threshold and heavy congestion thresholding, the call restriction rate of corresponding said slight congestion threshold of said congested control office configuration and heavy congestion thresholding.
3. the automatic congestion control method of realization according to claim 1 is characterized in that, said automatic congestion parameter is automatic congested percentage parameter, said congested control office with this automatic congested percentage parameter as call restriction rate.
4. the automatic congestion control method of realization according to claim 1; It is characterized in that the message that carries automatic congestion parameter described in the step (b) is to be sent by the congested control office of congested office direction when receiving from the initial address message of congested control office or setting up request message in congested office.
5. the automatic congestion control method of realization according to claim 1 is characterized in that, the message that carries automatic congestion parameter described in the step (b) is sent by the congested control office of congested office direction during Called Onhook behind end of calling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2006100334417A CN1874351B (en) | 2006-01-26 | 2006-01-26 | Method for implementing automatic congestion control |
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| CN2006100334417A CN1874351B (en) | 2006-01-26 | 2006-01-26 | Method for implementing automatic congestion control |
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| CN1874351B true CN1874351B (en) | 2012-06-27 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008244685A (en) * | 2007-03-27 | 2008-10-09 | Nec Corp | Congestion control system, service edge node, guidance server, congestion control method, its program, and recording medium |
| CN102255790A (en) * | 2010-05-18 | 2011-11-23 | 中兴通讯股份有限公司 | Method and system for informing congestion control information |
| CN102595555B (en) * | 2011-01-12 | 2018-08-31 | 中兴通讯股份有限公司 | Control terminal initiates the method and system of business |
| CN104168601B (en) * | 2014-07-25 | 2018-07-10 | 京信通信系统（中国）有限公司 | wireless network congestion control method and device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299572A (en) * | 1998-03-06 | 2001-06-13 | 艾利森电话股份有限公司 | Telecommunication inter-exchange congestion control |
| CN1516411A (en) * | 2003-01-08 | 2004-07-28 | ����������ͨѶ�ɷ�����˾�Ϻ��ڶ� | User calling load control method in IP network |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299572A (en) * | 1998-03-06 | 2001-06-13 | 艾利森电话股份有限公司 | Telecommunication inter-exchange congestion control |
| CN1516411A (en) * | 2003-01-08 | 2004-07-28 | ����������ͨѶ�ɷ�����˾�Ϻ��ڶ� | User calling load control method in IP network |
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