Route optimization method of synchronous network and synchronous network system

Abstract

The invention discloses a route optimization method of a synchronous network and a synchronous network system, which are used for solving the synchronous isolated island in the synchronous network. The route optimization method comprises the following steps of: making a backup of the topology of the synchronous network to obtain a topology copy of the synchronous network; detecting the synchronous isolated island for all nodes in the topology copy of the synchronous network at the background; performing exploratory optimization on the detected synchronous isolated island, judging whether the optimization schemes cause the synchronous error, and discarding the wrong optimization schemes and recording the correct optimization schemes; and evaluating all correct optimization schemes to obtain the best optimization scheme, and performing practical optimization on the topology of the synchronous network at the foreground according to the best optimization scheme.

Description

technical field [0001] The invention relates to a routing optimization method and a synchronous network system for a synchronous network, in particular to routing optimization for synchronous isolated islands appearing in the synchronous network. Background technique [0002] Usually, the digital synchronous network adopts the networking mode controlled by distributed multi-reference clocks. The synchronization areas are divided by provinces, autonomous regions, and municipalities directly under the central government. Each synchronization area has a regional reference clock, and the master and slave in the synchronization area are synchronized. The digital synchronization network nodes are divided into three levels. Specifically, the first-level nodes use the first-level reference clock, the second-level nodes use the second-level node clock, and the third-level nodes use the third-level node clock. Synchronization nodes at all levels are set in communication buildings at ...

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Problems solved by technology

[0012] The above solutions inevitably have the following defects: First, the routing change (for example, the introduction of the master clock link) is performed after the evaluation, and then the error is detected. In this way, it may be necessary to repeatedly perform routing changes, which takes up time and space resources

Second, synchronization islands cannot be optimized when they have no neighbor nodes

Therefore, this scheme is an incomplete synchronization island optimization scheme

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