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On the Multilayer Planning of Filterless Optical Networks With OTN Encryption

Authors :
Lv, Qian
Zhu, Zuqing
Source :
IEEE/ACM Transactions on Networking; December 2023, Vol. 31 Issue: 6 p2529-2544, 16p
Publication Year :
2023

Abstract

With enhanced cost-effectiveness, filterless optical networks (FONs) have been considered as a promising candidate for future optical infrastructure. However, as the transmission in FON relies on the “select-and-broadcast” scenario, it is more vulnerable to eavesdropping. Therefore, encrypting the communications in FONs will be indispensable, and this can be realized by introducing the optical transport network (OTN) encryption technologies that leverage high-speed encryption cards (ECs) to protect the integrity of OTN payload frames. In this paper, we study the problem of security-aware multilayer planning of FONs with OTN encryption. We first formulate a mixed integer linear programming (MILP) model (i.e., w-MILP) to solve the problem exactly. Then, to reduce the time complexity of problem-solving, we transform w-MILP into two correlated MILP models for establishing fiber trees for an FON (t-MILP) and planning flows in the fiber trees (s-MILP), respectively. The optimization in t-MILP is further transformed into a weighted set partitioning problem, which can be solved time-efficiently. As for s-MILP, we propose a polynomial-time approximation algorithm based on linear programming (LP) relaxation and randomized rounding. Extensive simulations verify the performance of our proposals.

Details

Language :
English
ISSN :
10636692
Volume :
31
Issue :
6
Database :
Supplemental Index
Journal :
IEEE/ACM Transactions on Networking
Publication Type :
Periodical
Accession number :
ejs64994301
Full Text :
https://doi.org/10.1109/TNET.2023.3256409