CN101141349A - Protection method of transmission service - Google Patents
Protection method of transmission service Download PDFInfo
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- CN101141349A CN101141349A CNA2007101238515A CN200710123851A CN101141349A CN 101141349 A CN101141349 A CN 101141349A CN A2007101238515 A CNA2007101238515 A CN A2007101238515A CN 200710123851 A CN200710123851 A CN 200710123851A CN 101141349 A CN101141349 A CN 101141349A
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Abstract
A transmission services' protection method comprises following steps as A. a plurality of the paths are defined as one group which is deemed as the operating path; also, a plurality of the paths are defined between the source end and sink end of the group of the operating path as the protection path; the service source end sends the service signals to the operating path and the additional service signals are transmitted via the protection path; B. When the failure of a operating path is detected, disconnecting the additional service transmission via a protection path with the normal service signal and the protection path is used to send the main service signals from the failed operating path. The utility model improves the service protective capability and network's self-recovery capability. Also, the bandwidth is effectively used and cost is saved.
Description
Technical field
The present invention relates to communication technical field, relate in particular to a kind of guard method of transport network traffic.
Background technology
In current information-intensive society, more and more higher to the quality requirement of information service, professional type is also varied.SDH (Synchronous Digital Hierarchy) (SDH:Synchronous Digital Hierarchy) and synchronous optical network (SONET:Synchronous Optical Network) are the focuses that current transmission technology is used.Tranmission techniques as the telecommunications backbone net; SDH/SONET just considers the reliability of network when planning and designing, comprised a series of resist technology in system: SNCP (SNCP:Sub-Network Connection Protection), multiplex section protection (MSP:Multiplex Section Protection) or the like.These resist technologies make user's business when transmission path breaks down, and are switched in the short time (generally requiring less than 50 milliseconds) and protect on the path, and the business datum of transmission is recovered rapidly, have improved the reliability of transmission network.
1:n (protection path of SNCP has been described in standard G841; a plurality of operating paths; extra traffic can be supported in the protection path) and 1+1 (operating path; a protection path; can not transmit extra traffic) the protection type and the 1:n and the MSP guard ring of MSP trail protection; the MSP guard ring also is a service aisle, and a protection passage also can be supported extra traffic.If these protected modes are in protection with after service aisle all lost efficacy, service disconnection can not be protected.
Patent CN200410054858.2 proposes an a kind of service aisle at this situation; the guard method of a plurality of protection passages; this method has improved the professional reliability that needs protection; but it is too low to transmit the traffic rate that needs protection, and will improve network construction cost greatly under current most of professional situation about all needing protection.
Summary of the invention
Technical problem to be solved by this invention is: a kind of guard method professional in transmission network is provided, and this method can improve the reliability and the utilance of network, makes the construction cost of network can not increase too much simultaneously.
The present invention solves the problems of the technologies described above the technical scheme that is adopted to be:
A kind of guard method of transport service may further comprise the steps:
A, be n path definition one group, as operating path, and between the source end in this group path and Su Duan definition m paths as the protection path of operating path; The service source end sends to operating path to service signal, and sends extra service signal on the protection path; Wherein n and m are the integer greater than 1;
B, when detecting certain bar operating path and lost efficacy, the transmission of the extra traffic in the tripping protection path on normal path of service signal, and realize the transmission of main business signal on inefficacy operating path by this protection path.
Described method, wherein: described step B comprises the steps:
B1, by end testing path, professional place and the protection path the service signal state; When certain bar operating path lost efficacy, protect the path to send the bridge joint demand signalling normally to the source end by a service signal;
After B2, service source termination are received described bridge joint demand signalling, cut off the transmission of the extra traffic on this protection path, the main business signal on the inefficacy operating path and be dealt into this protection path, on this protection path, send bridge joint simultaneously and confirm signaling to the place end;
B3, professional Su Duan switch to and receive the main business signal on this protection path after receiving this bridge joint affirmation signaling.
Described method, wherein: described m bar protection path is assigned to different priority, and when the main business path failure, selects the highest and service signal of priority to protect the path to send the bridge joint signaling normally from the protection path of remainder.
Described method, wherein: described step B3 comprises following processing: do not confirm signaling if professional Su Duan receives the bridge joint of source end in setting-up time, then repeat to send the bridge joint demand signalling on this protection path; If repeating to send still can not receive bridge joint behind the number of times that the bridge joint demand signalling reaches setting and confirm signaling, then change into time limit priority and protect normally and send the bridge joint request on the path.
Described method, wherein: after described step B3, also carry out following steps:
C, the main business signal that detects on the described inefficacy operating path as Su Duan recover, and this inefficacy operating path of detection still is in normal condition after waiting for the time of setting, then switch to this operating path and receive main business, send the demand signalling of cancelling bridge joint to the source end by this operating path simultaneously from the protection path;
After D, source end are received the demand signalling of cancelling bridge joint, recover the transmission of extra traffic on this protection path, on this operating path, send the affirmation signaling of cancelling the bridge joint request simultaneously to the place end.
Beneficial effect of the present invention is: adopts method of the present invention, improved, guaranteed effective utilization of bandwidth simultaneously the protective capability of business and the self-healing ability of network, and this method economy, the construction cost of network can not increase too much.
Description of drawings
Fig. 1 is the professional flow graph under the normal condition of the present invention;
Fig. 2 is a protocol interaction procedure chart of the present invention;
Fig. 3 is the professional flow graph of the present invention behind channel failure;
Fig. 4 is a passage professional flow graph just often in the embodiments of the invention;
Fig. 5 is the professional flow graph behind the channel failure in the embodiments of the invention.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
Main thought of the present invention is: is n (n＞1) service definition one group, organizes at this and specifies the protection path of m bar (m＞1) path as this group vocational work path between professional source end and the Su Duan, as shown in Figure 1.Under the normal condition; the service source end sends to operating path to service signal; and on the protection path, send extra service signal; when detecting certain bar operating path inefficacy; the transmission of the extra traffic in the tripping protection path on normal path of service signal, and realize the transmission of main business signal on inefficacy operating path by this protection path.This method is not as long as exist simultaneously more than m paths (comprising operating path and protection path) inefficacy, and business just can all be protected.
Method of the present invention may further comprise the steps shown in Fig. 2,3:
The first step: is n path definition one group, and as operating path, definition m paths is as the protection path of operating path between this group source end in path and Su Duan.The service source end sends to operating path to service signal, sends extra service signal on the protection path.
Second step: the service signal in end testing path, professional place and protection path if the main business signal on the operating path is normal, then receives the main business signal on operating path; Otherwise protect the path to send the bridge joint demand signalling normally to the source end by a service signal.
The 3rd step: the service source termination is received the bridge joint demand signalling, cuts off the transmission of the extra traffic on this protection path, the main business signal on the inefficacy operating path and be dealt into this protection path, simultaneously on this protection path to place end transmission bridge joint affirmation signaling;
The 4th step: professional Su Duan switches to and receives the main business signal on this protection path, as shown in Figure 3 after receiving this bridge joint affirmation signaling.
This m bar protection path is assigned to different priority, all selects the highest and service signal of priority to protect the path to send the bridge joint signaling normally during each main business path failure from remaining protection path.
If receiving the bridge joint of source end in setting-up time, Su Duan do not confirm signaling; on this protection path, repeat to send the bridge joint request; still can not receive bridge joint behind the number of times of setting and confirm signaling if reach, then change into time limit priority and protect normally and send the bridge joint request on the path.
According to said method of the present invention, can also may further comprise the steps:
The 5th step: main business is after sending on the protection path, if the main business signal that Su Duan detects on the operating path recovers, the main business signal is still normal after the time of one section setting of wait, then switch to and receive main business on the operating path, send to the source end by operating path simultaneously and cancel the bridge joint demand signalling;
The 6th step: after the source end is received and cancelled the bridge joint demand signalling, cancel main business on this operating path protection concurrent on the path, the transmission of extra traffic on the recovery and protection path sends the affirmation signaling of cancelling the bridge joint request to the place end simultaneously on operating path.
The present invention will be described with a concrete application scheme below, and this concrete application scheme has 3 Working service passages and 2 protection passages:
1, as shown in Figure 4; in optical transport network; network element A and network element B have 5 input and output paths (path can be a passage in optical fiber or the SDH, may be not only so many in the reality, 5 paths of using in the example of the present invention only are described) here; specify wherein 3 to be operating path (W1; W2, W3), 2 are protection path (P1 in addition; P2), wherein the priority of P1 is higher than the priority of P2.Load the business that needs protection normally at operating path, load extra traffic in the protection path.The state in Trail termination sink path of testing simultaneously and protection path.
2, operating path W2 lost efficacy, as shown in Figure 5.Network element B detects W2 and lost efficacy, and protection path P 1 and P2 are normal, selects the high protection path P 1 of priority to send the bridge joint request to the network element A of source end.
3, network element A receives the bridge joint request on path P 1, cuts off the extra traffic signal on the P1, the service signal on the operating path W2 and be dealt on the P1, sends bridge joint to network element B simultaneously and confirms order.
4, network element B receives bridge joint affirmation order, is switched to the signal that receives on the protection path P 1 on the former W2 path.
5, operating path W2 recovers sometime.Network element B detects operating path W2 and recovers, and waits for the time of one section appointment, and W2 still is in normal condition, then switches to operating path W2 and goes up the reception main business, sends the request that cancellation P1 goes up bridging traffic to network element A simultaneously.
6, network element A cancels bridge joint after receiving the bridge joint request of cancelling on the P1, recovers the transmission of extra traffic on the P1 protection passage, and while transmission on service aisle is cancelled bridge joint and confirmed order;
7, after network element B receives cancellation bridge joint affirmation order, the reception that recovers extra traffic on P1 protection passage.
More than be exactly that the present invention realizes protection and the handoff procedure that recovers on concrete scheme.Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (5)
1. the guard method of a transport service may further comprise the steps:
A, be n path definition one group, as operating path, and between the source end in this group path and Su Duan definition m paths as the protection path of operating path; The service source end sends to operating path to service signal, and sends extra service signal on the protection path; Wherein n and m are the integer greater than 1;
B, when detecting certain bar operating path and lost efficacy, the transmission of the extra traffic in the tripping protection path on normal path of service signal, and realize the transmission of main business signal on inefficacy operating path by this protection path.
2. method according to claim 1 is characterized in that: described step B comprises the steps:
B1, by end testing path, professional place and the protection path the service signal state; When certain bar operating path lost efficacy, protect the path to send the bridge joint demand signalling normally to the source end by a service signal;
After B2, service source termination are received described bridge joint demand signalling, cut off the transmission of the extra traffic on this protection path, the main business signal on the inefficacy operating path and be dealt into this protection path, on this protection path, send bridge joint simultaneously and confirm signaling to the place end;
B3, professional Su Duan switch to and receive the main business signal on this protection path after receiving this bridge joint affirmation signaling.
3. method according to claim 2; it is characterized in that: described m bar protection path is assigned to different priority; and when the main business path failure, from the protection path of remainder, select the highest and service signal of priority to protect the path to send the bridge joint signaling normally.
4. method according to claim 3 is characterized in that: described step B3 comprises following processing: do not confirm signaling if professional Su Duan receives the bridge joint of source end in setting-up time, then repeat to send the bridge joint demand signalling on this protection path; If repeating to send still can not receive bridge joint behind the number of times that the bridge joint demand signalling reaches setting and confirm signaling, then change into time limit priority and protect normally and send the bridge joint request on the path.
5. according to the described method of the arbitrary claim of claim 2 to 4, it is characterized in that: after described step B3, also carry out following steps:
C, the main business signal that detects on the described inefficacy operating path as Su Duan recover, and this inefficacy operating path of detection still is in normal condition after waiting for the time of setting, then switch to this operating path and receive main business, send the demand signalling of cancelling bridge joint to the source end by this operating path simultaneously from the protection path;
After D, source end are received the demand signalling of cancelling bridge joint, recover the transmission of extra traffic on this protection path, on this operating path, send the affirmation signaling of cancelling the bridge joint request simultaneously to the place end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101238515A CN101141349A (en) | 2007-10-10 | 2007-10-10 | Protection method of transmission service |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101238515A CN101141349A (en) | 2007-10-10 | 2007-10-10 | Protection method of transmission service |
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| CN101141349A true CN101141349A (en) | 2008-03-12 |
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| CNA2007101238515A Pending CN101141349A (en) | 2007-10-10 | 2007-10-10 | Protection method of transmission service |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969382A (en) * | 2010-09-25 | 2011-02-09 | 中兴通讯股份有限公司 | Method and device for sharing service protection in mesh network |
| WO2011038630A1 (en) * | 2009-09-29 | 2011-04-07 | Huawei Technologies Co., Ltd. | Method of m:1 protection |
| CN102255744A (en) * | 2010-05-21 | 2011-11-23 | 中兴通讯股份有限公司 | Network protection method and device based on IPS (Information Processing System) |
| CN102271058A (en) * | 2011-08-09 | 2011-12-07 | 中兴通讯股份有限公司 | Multi-path service protecting method and device |
| CN102833089A (en) * | 2011-06-17 | 2012-12-19 | 中兴通讯股份有限公司 | Link protection method and device |
| CN102857950A (en) * | 2011-06-28 | 2013-01-02 | 中兴通讯股份有限公司 | Notification method and system of shared grid protection |
| WO2016061992A1 (en) * | 2014-10-22 | 2016-04-28 | 中兴通讯股份有限公司 | Service transmission method and device |
| CN106301857A (en) * | 2015-06-08 | 2017-01-04 | 华为技术有限公司 | A kind of method of network protection, network node and system |
| CN107018387A (en) * | 2017-04-19 | 2017-08-04 | 北京小鸟科技股份有限公司 | The means of communication and communication apparatus and fiber matrix system |
| CN107483332A (en) * | 2016-06-07 | 2017-12-15 | 中兴通讯股份有限公司 | Business transfer management methods, devices and systems for SNCP link |
-
2007
- 2007-10-10 CN CNA2007101238515A patent/CN101141349A/en active Pending
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8427940B2 (en) | 2009-09-29 | 2013-04-23 | Futurewei Technologies, Inc. | Method of M:1 protection |
| CN102668452A (en) * | 2009-09-29 | 2012-09-12 | 华为技术有限公司 | Method of M:1 protection |
| WO2011038630A1 (en) * | 2009-09-29 | 2011-04-07 | Huawei Technologies Co., Ltd. | Method of m:1 protection |
| US8345542B2 (en) | 2009-09-29 | 2013-01-01 | Futurewei Technologies, Inc. | Method of M:1 protection |
| CN102668452B (en) * | 2009-09-29 | 2015-03-11 | 华为技术有限公司 | Method of M:1 protection |
| CN102255744A (en) * | 2010-05-21 | 2011-11-23 | 中兴通讯股份有限公司 | Network protection method and device based on IPS (Information Processing System) |
| WO2011143908A1 (en) * | 2010-05-21 | 2011-11-24 | 中兴通讯股份有限公司 | Method and device for network protection based on infrastructure protection switching (ips) |
| CN101969382B (en) * | 2010-09-25 | 2014-07-02 | 中兴通讯股份有限公司 | Method and device for sharing service protection in mesh network |
| CN101969382A (en) * | 2010-09-25 | 2011-02-09 | 中兴通讯股份有限公司 | Method and device for sharing service protection in mesh network |
| CN102833089A (en) * | 2011-06-17 | 2012-12-19 | 中兴通讯股份有限公司 | Link protection method and device |
| WO2012171397A1 (en) * | 2011-06-17 | 2012-12-20 | 中兴通讯股份有限公司 | Link protection method and device |
| CN102857950A (en) * | 2011-06-28 | 2013-01-02 | 中兴通讯股份有限公司 | Notification method and system of shared grid protection |
| CN102857950B (en) * | 2011-06-28 | 2017-06-27 | 中兴通讯股份有限公司 | The notifying method and system of a kind of shared grid protection |
| CN102271058A (en) * | 2011-08-09 | 2011-12-07 | 中兴通讯股份有限公司 | Multi-path service protecting method and device |
| WO2016061992A1 (en) * | 2014-10-22 | 2016-04-28 | 中兴通讯股份有限公司 | Service transmission method and device |
| CN105591899A (en) * | 2014-10-22 | 2016-05-18 | 中兴通讯股份有限公司 | Service transmission method and apparatus |
| US10778570B2 (en) | 2015-06-08 | 2020-09-15 | Huawei Technologies Co., Ltd. | Network protection method, network node and system |
| CN106301857A (en) * | 2015-06-08 | 2017-01-04 | 华为技术有限公司 | A kind of method of network protection, network node and system |
| CN106301857B (en) * | 2015-06-08 | 2019-10-25 | 华为技术有限公司 | A kind of method of network protection, network node and system |
| CN107483332A (en) * | 2016-06-07 | 2017-12-15 | 中兴通讯股份有限公司 | Business transfer management methods, devices and systems for SNCP link |
| CN107018387A (en) * | 2017-04-19 | 2017-08-04 | 北京小鸟科技股份有限公司 | The means of communication and communication apparatus and fiber matrix system |
| CN107018387B (en) * | 2017-04-19 | 2020-03-13 | 北京小鸟科技股份有限公司 | Communication method and communication equipment and optical fiber matrix system |
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Open date: 20080312 |