Intelligent Optical Network Layer Domain Network Planning

Intelligent optical networks (ION) are the most promising candidate for the future transport networks, which not only meets the increasing needs of bandwidth, but also copes well with the bursty IP data traffic. In the intelligent optical networks, connections can be set up and released dynamically, the network resource can be assigned and reconfigured effectively, and differentiated bandwidth provisioning services are provided. Routing and network planing technology are import research subjects.In this paper, we introduced a noval way to calculate disjoint route algorithm in the mulit-layer multi-area network. In the tradtional algorithms, the gernernal way to calculate disjoint route is to calculate the working route first, then set the link in the working working route to the maximum value or delete those links from current topology to avoid the impact of the working route to calculate the protecting route. Combined with ant algorithm with the advantage of multi-object optimizum, we are able to optimize the working and protecting route together, meanwhile, a noval routing function is introduced to guarantee the physical impairment feature and traffic grooming feature.As network planning is referred, we introduce a new algorithm to implement the green land planning, all-connected network is constructed according to the traffic. Then each link will be analyzed based on the resource utilities, links will be iterately deleted from topology if they cannot meet the requirement to construct the network matching the traffic directing.In the development of network planning software, we improve the current algorithm of global traffic predicting, with the consideration of the overall traffic, the new algorithm considers several factors as routing lengths, hops and node condition etc. to improve the routing reasonability.