Method for implementing cross board M:N protection
A technology of cross board and board source, which is applied in the direction of data exchange through path configuration, electrical components, time division multiplexing system, etc. It can solve the problems of slow switching speed and high difficulty of implementation, and achieve fast switching speed and simple algorithm Effect
Inactive Publication Date: 2009-07-08
NANJING ZHONGXING XIN SOFTWARE CO LTD
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Problems solved by technology
The disadvantage of this solution is that the M:N protection requires the coordination and cooperation of the source end and the sink end of the service board to realize it. It requires complex switching and bridging protocols, and the switching speed is slow and difficult to implement.
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[0023] The present invention uses the error correction coding technology to encode and decode the service line data sent by the service board to N working cross-connect boards and M redundant cross-connect boards, so as to realize any cross-connection of M+N cross-connect boards that is less than or equal to M cross-connect boards. If a board fails, the service board sink can restore normal SDH services from the remaining N cross-connect boards. In the present invention, M is a natural number greater than or equal to 1 and less than N.
[0024] figure 1 Shown is the method for M:N protection of the cross board of the present invention, which includes the following steps:
[0025] Step 110, the source end of the service board encodes N sets of service data to be sent to the active cross-connect board;
[0026] Step 120, the source end of the service board divides the coded data into N+M groups, forming N+M groups of coded data and sending them to N+M cross-connect boards, and...
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The present invention proposes a method for realizing cross-connect board M:N protection, including the following steps: step 1, the source end of the service board encodes the N groups of service data to be sent to the main cross-connect board; step 2, the source end of the service board Divide the encoded data into N+M groups, and send them to N+M cross-connect boards respectively, and the encoding and grouping meet the requirement that any N groups of encoded data in the N+M groups of encoded data can recover the data described in step 1. N sets of business data; Step 3, the service board sink receives N+M sets of coded data from N+M cross-connect boards, selects the coded data of N normal cross-connect boards, and obtains N sets of coded data; Step 4, the service board sink The terminal performs decoding operation on the N sets of coded data obtained in step 3, and recovers the service data.
Description
technical field [0001] The invention relates to an SDH (Synchronous Digital Hierarchy, synchronous digital system) system in the field of communication, in particular to a method for realizing cross-board M:N protection. Background technique [0002] The cross-connect board is the core unit of SDH equipment. It completes the scheduling of VC (virtual container) particles among the service boards of the SDH system. A fault in the cross-connect board will cause the interruption of the service of the entire SDH system. Therefore, redundancy is usually used for such an important unit as the cross-connect board. Protected by way of backup. [0003] The traditional SDH cross-connect board adopts the 1+1 protection mode. The source end of the service board sends SDH services to the active and standby cross-connect boards concurrently. The status of the service bus sent by the cross-connect board determines whether to receive data from the active cross-connect board or to receive s...
Claims
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IPC IPC(8): H04L12/46H04J3/08
Inventor 郭佩峻
Owner NANJING ZHONGXING XIN SOFTWARE CO LTD