CN101170374B - Method for realizing optical synchronization digital transmission service loop function - Google Patents
Method for realizing optical synchronization digital transmission service loop function Download PDFInfo
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- CN101170374B CN101170374B CN200710187975XA CN200710187975A CN101170374B CN 101170374 B CN101170374 B CN 101170374B CN 200710187975X A CN200710187975X A CN 200710187975XA CN 200710187975 A CN200710187975 A CN 200710187975A CN 101170374 B CN101170374 B CN 101170374B
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Abstract
The invention provides a method to realize loop-back function of an optical synchronous digital transmission service, which is realized by configuring the optical synchronous digital transmission time slot service, including the following steps of: (a) receiving and storing a loop-back command and a time slot service configuring command; (b) reconfiguring the service according to the loop-back command; (c) issuing a new service configured to a single board. Through software time slot configuration, the invention flexibly realizes loop-back function at a relatively low cost, independent of hardware, solving function limitations that are brought because the on-chip register cannot realize the loop-back function; and at the same time, the invention doesn't need the replacement of chips or addition of hardware, and thus saving the cost.
Description
Technical field
The present invention relates to Optical synchronization digital transmission technology (SDH, Synchronous DigitalHierarchy), be specifically related to the loopback method to set up in the maintenance function of SDH.
Background technology
In the SDH field, loop fuction is to be the important method of using always in the maintenance function, can be divided into end side loopback and loopback at the line side (seeing Fig. 1 and Fig. 2), and the engineering staff can use a kind of method that loop fuction is used as the positioning service fault point that is provided with.
At present, when board software is realized loop fuction, all be to adopt the loop fuction register that chip is set to realize.But, exploitation along with chip, the loop fuction of realizing by the loopback register that chip is set has certain limitation, the reason that may design at that time owing to chip, loop fuction is not carried out or the basic loopback register that just do not provide of chip also considers to increase reasons such as this function, our present method just can not be suitable for like this.
In disclosed Chinese patent CN2692936 on April 13rd, 2005 " a kind of electrical communication system loopback at the line side checkout gear ", the hardware unit of the service loop detection of a kind of SDH of realization is provided, though this technology also can be finished detection, the maintenance of loop fuction, but cost height, and must rely on hardware unit and realize that certain limitation is arranged.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of method that realizes optical synchronization digital transmission service loop function, realizes loop fuction neatly with lower cost.
For solving the problems of the technologies described above, the invention provides a kind of method that realizes optical synchronization digital transmission service loop function, this method realizes by configuration Optical synchronization digital transmission time slot business, may further comprise the steps:
(a) receive and preserve loopback order and time slot services configuration order;
(b) order reconfigures business according to loopback;
(c) issue new business configuration to veneer.
Further, step (a) may further comprise the steps:
(a1) accept the loopback control command, be saved in loopback control buffering area, and the loopback that the access point of this loopback is set is provided with mark;
(a2) accept the time slot configuration order that the network element control unit issues, be saved in the time slot configuration buffering area.
Step (a1) further comprises:
(a11) accept and preserve the loopback order;
(a12) according to the physical port number computational logic port numbers of loopback order;
(a13) use the logic timeslot number as array index, record advances loopback the mark array is set, and indicates on this logic time slot loopback is set;
(a14) judge whether to resolve and finish, and if not circulation (a12) to (a14), finish up to parsing.
Further, step (b) may further comprise the steps:
(b1) read the time slot configuration buffering area, resolve the time slot configuration order one by one;
(b2) loopback in conjunction with the loopback control command is provided with mark, if the access point of the Inbound of this time slot is provided with loopback, then deletes the business of current Inbound, then in outgoing direction configuration express traffic.
Further, cancel with that the loopback operating process is set is identical, preserve earlier all configuration service points to be initialized as when loopback indicates loopback is not set, loopback indicates to comprise and is provided with or the information of cancellation when issuing.
Compared to prior art, the inventive method realizes loop fuction by the software time slot configuration, realize loop fuction neatly with lower cost, do not rely on hardware, solved owing to chip register can't be realized the functional limitation that loop fuction brings, simultaneously do not need to change chip again or increase hardware, save cost.
Description of drawings
Fig. 1 is a SDH end side loopback schematic diagram.
Fig. 2 is a SDH loopback at the line side schematic diagram.
Fig. 3 is the flow chart that the present invention realizes the optical synchronization digital transmission service loop method.
Fig. 4 is provided with the professional schematic diagram that intersects of loopback.
Fig. 5 is that the concrete application example of the inventive method changes timing crack process chart.
Embodiment
In the transport service of Optical synchronization digital transmission, use the configuration time slot to realize professional transmission usually, be exactly that professional loopback route is set in fact and loopback is set, so the present invention just realizes professional loop fuction by the method for configuration time slot services.
The method of realization optical synchronization digital transmission service loop provided by the invention realizes that by configuration Optical synchronization digital transmission time slot business as shown in Figure 3, this method may further comprise the steps:
Step 301: receive and preserve loopback order and time slot services configuration order;
Accept the time slot services configuration order and the loopback order of network element control plate transmission and preserve mentioned order, be provided with at the loopback passage or cancellation loopback sign according to the loopback order to buffering;
Step 302: order reconfigures business according to loopback;
The time slot services configuration buffering that traversal receives, indicate in conjunction with the passage loopback, determine whether to change the content of time slot buffering, if do not need then travel through next time, otherwise according to the loopback rule, the business configuration of Out direction is set to the IN direction, make professional OUT be configured to lead directly to, can be with reference to figure 4, up to having traveled through all time slot services configuration orders.
Step 303: issue new business configuration to veneer.
To recomputate the time slot services configuration buffering that obtains through above step and be handed down to veneer.
Below be embodied as example with the end side loopback, realize the end side loop fuction by configuration service, handling process is as follows:
The first step: accept the loopback control command, be saved in loopback control buffering area, and the loopback that the access point of this loopback is set is provided with mark;
Cancellation is with that the loopback operating process is set is identical, preserves earlier all configuration service points to be initialized as when loopback indicates loopback is not set, and loopback indicates and comprises the information that is provided with or cancels when issuing.
Second step: accept the time slot configuration order that the network element control unit issues, be saved in the time slot configuration buffering area;
The 3rd step: read the time slot configuration buffering area, resolve the time slot configuration order one by one;
The 4th step: the loopback in conjunction with the loopback control command is provided with mark, if the access point of the In direction of this time slot is provided with loopback, then delete the business (the solid line list arrow of cross business indicates) of current In direction, then as shown in Figure 4 in Out direction configuration express traffic (the solid line double-head arrow of cross business indicates).
Among Fig. 4, solid line list arrow is represented traffic direction, and dotted line list arrow is represented down traffic direction, and Inbound IN and outgoing direction OUT are that the arrow Inbound is represented into intersection the cross unit of relative diagram centre, and the arrow outgoing direction is expressed intersection.
Two IN1 are arranged among the figure, and expression can be provided with concurrent business, realizes the loopback of concurrent protection, has autgmentability, can 2 or above can, be called broadcasting service in the industry.Solid line double-head arrow representative ring return line couples together the business of two different directions, has so just played the professional function that realizes loopback that goes up.
The 5th step: will recomputate the time slot services configuration buffering that obtains through above step and be handed down to veneer.
As shown in Figure 5, changing timing crack handling process comprises the steps:
Step 501: accept and preserve the loopback order;
Step 502: according to the physical port number computational logic port numbers of loopback order;
Step 503: as array index, record advances loopback the mark array is set, and indicates on this logic time slot and is provided with loopback with the logic timeslot number;
Step 504: judge whether to resolve and finish, if not circulation step 502 to step 504, finish up to parsing;
Step 505: receive and preserve the time slot order;
Step 506: judge whether that parsing finishes, if do not have, then execution in step 507, otherwise execution in step 510;
Step 507: whether the In direction of judging this time slot is provided with loopback, if then execution in step 508, otherwise execution in step 506;
Circulation execution in step 507 can be resolved the time slot order one by one.
Step 508: the time slot of deleting this In direction;
Step 509: according to the time slot configuration of Out direction, increase the straight-through time slot of this Out direction, change step 506 again;
Step 510: the time slot configuration that recomputates is issued to veneer, has realized loop fuction.
The inventive method realizes loop fuction by the software time slot configuration, does not rely on hardware, has solved owing to chip register can't be realized the functional limitation that loop fuction brings, and does not need to change simultaneously chip again or increases hardware, saves cost.
Claims (5)
1. a method that realizes optical synchronization digital transmission service loop is characterized in that, this method realizes that by configuration Optical synchronization digital transmission time slot business this method may further comprise the steps:
(a) reception and preservation loopback order and time slot services configuration order, the loopback that the access point of loopback is set is provided with mark;
(b) order reconfigures business according to loopback, specifically comprise: resolve the time slot configuration order, in conjunction with the loopback of loopback order mark is set, if the access point of the Inbound of this time slot is provided with loopback, then delete the business of current Inbound, then in outgoing direction configuration express traffic;
(c) issue new business configuration to veneer.
2. the method for claim 1 is characterized in that, step (a) may further comprise the steps:
(a1) accept the loopback order, be saved in loopback control buffering area, and the loopback that the access point of this loopback is set is provided with mark;
(a2) accept the time slot configuration order that the network element control unit issues, be saved in the time slot configuration buffering area.
3. method as claimed in claim 2 is characterized in that, step (a1) further comprises:
(a11) accept and preserve the loopback order;
(a12) according to the physical port number computational logic port numbers of loopback order;
(a13) use the logic timeslot number as array index, record advances loopback the mark array is set, and indicates on this logic time slot loopback is set;
(a14) judge whether to resolve and finish, and if not circulation (a12) to (a14), finish up to parsing.
4. the method for claim 1 is characterized in that, in the step (b), resolves the time slot configuration order and is specially: read the time slot configuration buffering area, resolve the time slot configuration order one by one.
5. as each described method in the claim 1 to 4, it is characterized in that: cancel with that the loopback operating process is set is identical, preserve earlier all configuration service points to be initialized as when loopback indicates and loopback is not set, the information that the loopback sign comprises setting or cancels when issuing.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710187975XA CN101170374B (en) | 2007-11-15 | 2007-11-15 | Method for realizing optical synchronization digital transmission service loop function |
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| CN200710187975XA CN101170374B (en) | 2007-11-15 | 2007-11-15 | Method for realizing optical synchronization digital transmission service loop function |
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| CN101170374A CN101170374A (en) | 2008-04-30 |
| CN101170374B true CN101170374B (en) | 2011-08-24 |
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| CN200710187975XA Expired - Fee Related CN101170374B (en) | 2007-11-15 | 2007-11-15 | Method for realizing optical synchronization digital transmission service loop function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102088417B (en) * | 2011-03-18 | 2013-04-17 | 华为技术有限公司 | Method and apparatus for achieving IP (Internet Protocol) message loopback |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366393A (en) * | 2000-12-14 | 2002-08-28 | 美国阿尔卡塔尔资源有限合伙公司 | Wave length flexible light retransmission device used in bidirectional single optical fiber wave part multiplexing system testing |
| CN2692936Y (en) * | 2003-06-03 | 2005-04-13 | 深圳市中兴通讯股份有限公司 | Line side loop detector for electronic communication system |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1366393A (en) * | 2000-12-14 | 2002-08-28 | 美国阿尔卡塔尔资源有限合伙公司 | Wave length flexible light retransmission device used in bidirectional single optical fiber wave part multiplexing system testing |
| CN2692936Y (en) * | 2003-06-03 | 2005-04-13 | 深圳市中兴通讯股份有限公司 | Line side loop detector for electronic communication system |
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Effective date of registration: 20151221 Address after: Yuhuatai District of Nanjing City, Jiangsu province 210012 Bauhinia Road No. 68 Patentee after: Nanjing Zhongxing New Software Co., Ltd. Address before: 518057 Nanshan District high tech Industrial Park, Guangdong, South Road, science and technology, ZTE building, legal department Patentee before: ZTE Corporation |
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Granted publication date: 20110824 Termination date: 20161115 |