Method and system for configuring protective resources in dense light wave multiplexing networks

Abstract

The invention discloses a method and system for configuring protective resources in dense light wave multiplexing networks according to 2:N protection. The method comprises the steps that alternative route sets are calculated by using the shortest path algorithm K; according to idle capacity in the networks at current time and the weight ratio of a work route, a first protective route and a second protection route, three routes, having irrelevant shared risk link groups, of the alternative route sets are selected to constitute a work-protection route set; wave duct resources are distributed for the work routes and the protective routes in the work-protection route set. According to the method and system, the use rate of the resources in the high-dense light wave multiplexing networks can be improved, fault recovery time is shortened, and reliability of the networks is improved.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and system for configuring protection resources in a 2:N protection-based dense lightwave multiplexing network. Background technique [0002] The robustness, speed and capacity of the network are the first few factors to be considered in network planning. Modern communication backbone networks use optical transport networks, and mainly use Dense Wavelength Multiplexing (DWDM) technology to achieve system expansion. Compared with the traditional network, the optical transport network greatly improves the speed, capacity and anti-interference of the network. With the improvement of network speed, users are more sensitive to network faults, which puts forward higher requirements for the robustness of the network. [0003] The mesh network is the main network structure of the optical transmission backbone network. The multi-route form of the mesh network makes its reliab...

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Problems solved by technology

[0007] However, in 1+1+1 protection, each service protection routing resource is independent and irrelevant, without considering the characteristics of DWDM network, so there are problems of high resource occupation and low network bearer efficiency

In rerouting protection, due to the problem of calculating a new protection route for the network after a failure, the protection capacity is uncertain, resulting in a high risk of service interruption

For the problems referred to above, there is no solution in the prior art

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