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Time-Efficient RSA over Large-Scale Multi-Domain EON.

Tong Xi1, Xuehua Li1, Xin Wang1

  • 1Institute of Intelligent Communication and Computing, School of Information and Communication Engineering, Beijing Information Science and Technology University, Beijing 102206, China.

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|November 9, 2024
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Summary
This summary is machine-generated.

This study introduces an efficient algorithm for faster routing in large-scale elastic optical networks (EONs). The new method significantly reduces processing time while improving spectrum utilization.

Keywords:
branch boundmulti-domain elastic optical networkmulti-domain networkrouting and spectrum allocationtime-efficient routing

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Area of Science:

  • Telecommunications Engineering
  • Computer Science
  • Network Optimization

Background:

  • Timeliness of routing is a critical challenge in large-scale, multi-domain operator networks.
  • Existing routing methods struggle with efficiency in complex network environments.

Purpose of the Study:

  • To accelerate routing processes in large-scale multi-domain elastic optical networks (EONs).
  • To improve spectrum utilization and reduce algorithm time complexity.

Main Methods:

  • Integration of Dijkstra's shortest path algorithm with a pruning strategy for routing.
  • Adoption of a layered-graph approach for spectrum allocation.
  • Development of the Branch-and-Bound based Routing and Layered Graph based Spectrum Allocation (BBR-LGSA) algorithm.

Main Results:

  • The BBR-LGSA algorithm achieved a nearly 78% reduction in average running time.
  • Demonstrated higher spectrum utilization compared to benchmark algorithms in large-scale multi-domain EONs.
  • Evaluated the impact of key parameters on algorithm performance.

Conclusions:

  • The proposed BBR-LGSA algorithm offers significant improvements in speed and efficiency for routing in EONs.
  • The integrated approach effectively addresses the timeliness problem in complex network scenarios.
  • BBR-LGSA provides a viable solution for optimizing performance in modern optical networks.