Proceedings ArticleDOI
Load balanced routing to enhance the performance of optical backbone networks
Pachamuthu Rajalakshmi,Ashok Jhunjhunwala +1 more
- pp 1-5
TLDR
This paper identifies the topological and routing technique constraints on the performance of optical backbone WDM networks with wavelength conversion at the nodes and proposes techniques to over come this constraints so that the network performance is enhanced.Abstract:
In this paper, we identify the topological and routing technique constraints on the performance of optical backbone WDM networks with wavelength conversion at the nodes and propose techniques to over come this constraints so that the network performance is enhanced. For any session request, a lightpath has to be established on the shortest path between the node pairs. As each lightpath is a substantial revenue and long-lived, the network operator would like no lightpath request rejection (call blocking) or would like to accommodate more calls in the network before he has to upgrade his network. Hence given a network, we are proposing an analytical method to identify the critical links of the network which will cause early blocking, for the fixed shortest path routing. Once the critical links are identified, we would like to analyse the physical location of these critical links on the network topology and propose a new fixed routing technique namely, restricted routing by which the performance is enhanced as it balances the load uniformly among the links. In this routing technique, not all the calls have the shortest path. We compare the performance of the restricted routing with the optimal performance where all the links have equal blocking probability. The analysis is carried out on some of the standard backbone networks and the results show that by the restricted routing there is a significant performance improvement.read more
Citations
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Journal ArticleDOI
The choice of the best among the shortest routes in transparent optical networks
TL;DR: The new fixed routing algorithm, named Best among the Shortest Routes (BSR), is proposed and its performance is compared in terms of blocking probability and network utilization with Dijkstra's shortest path algorithm and others algorithms proposed in the literature.
Journal ArticleDOI
Load balancing in fixed-routing optical networks with weighted ordering heuristics
TL;DR: The results show that the adoption of a simple weighted ordering heuristic strategy to find fixed shortest path routes in a topology can improve load-balancing and, consequently, network performance.
Journal ArticleDOI
Ant Colony Optimization Applied to the Problem of Choosing the Best Combination among M Combinations of Shortest Paths in Transparent Optical Networks
TL;DR: The algorithm proposed in this paper is an adaptation of Ant Colony Optimization (ACO) metaheuristic and attempt to define the set of routes that fits in an optimized way the network conditions, resulting in reduced number of blocked requests and better adjusted justice in route distribution.
Performance Evaluation of Algorithms for Wavelength Assignment in Optical WDM Networks
TL;DR: This paper evaluates the performance of three algorithms for allocating wavelength optical networks WDM and they are: first-fit, least-used e most-used and there are no surprises.
Proceedings ArticleDOI
Performance Evaluation of Fixed Routing Algorithms in All-Optical Networks under Non-uniform Traffic
TL;DR: Overall, performance evaluation results showed that the algorithm BSR achieves for all topologies studied superior performance in terms of blocking probability and fairness.
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