Spectrum Usage Minimization for Shared Backup Path Protection in Elastic Optical Networks

Ching Fang Hsu, Hao Cheng Hu, Hsuan Fang Fu, Jin Jun Zheng, Shi Xuan Chen

研究成果: Conference contribution

5 引文 斯高帕斯(Scopus)

摘要

Protection is an important issue of resilience in elastic optical networks (EONs). Not only for working lightpaths, but also routing, modulation and spectrum assignment (RMSA) for backup paths is essential. In protection scheme, shared backup path protection (SBPP) is usually discussed now. SBPP allows backup lightpaths to share spectrum resource so that the amount of allocated frequency slots can be reduced. Spectrum usage critically affects blocking performance due to the limited resource in spectrum. For this reason, we aim at minimizing spectrum usage as our objective. For RMSA, many heuristic algorithms pursue the shortest path or minimum-hopped path and neglect the balance between number of required frequency slots and maximum transmission distance (MTD) of modulation levels. Therefore, we propose a RMSA algorithm, namely, lowest cost first and shortest path algorithm (LCF) to derive the RSA solutions for both working and backup lightpaths. However, among RSA solutions satisfying MTD constraint, the one with least vacant resource consumption might be neither the minimum-hopped path nor the shortest path. Hence we propose an enhanced RMSA algorithm called minimum usage algorithm (MU) to pre-calculate all paths satisfying MTD constraint and then find the one with minimum resource usage. Simulation results show that both LCF and MU can achieve great improvement on blocking performance.

原文English
主出版物標題2019 International Conference on Computing, Networking and Communications, ICNC 2019
發行者Institute of Electrical and Electronics Engineers Inc.
頁面602-606
頁數5
ISBN(電子)9781538692233
DOIs
出版狀態Published - 2019 4月 8
事件2019 International Conference on Computing, Networking and Communications, ICNC 2019 - Honolulu, United States
持續時間: 2019 2月 182019 2月 21

出版系列

名字2019 International Conference on Computing, Networking and Communications, ICNC 2019

Conference

Conference2019 International Conference on Computing, Networking and Communications, ICNC 2019
國家/地區United States
城市Honolulu
期間19-02-1819-02-21

All Science Journal Classification (ASJC) codes

  • 電腦網路與通信
  • 軟體
  • 硬體和架構

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