SDFA: A Service-Driven Fragmentation-Aware Resource Allocation in Elastic Optical Networks

被引:25
作者
Bao, Bowen [1 ]
Yang, Hui [1 ]
Yao, Qiuyan [1 ]
Yu, Ao [1 ]
Chatterjee, Bijoy Chand [2 ]
Oki, Eiji [3 ]
Zhang, Jie [1 ]
机构
[1] Beijing Univ Posts & Telecommun, State Key Lab Informat Photon & Opt Commun, Beijing 100876, Peoples R China
[2] South Asian Univ, Dept Comp Sci, New Delhi 110021, India
[3] Kyoto Univ, Grad Sch Informat, Kyoto 6068501, Japan
来源
IEEE TRANSACTIONS ON NETWORK AND SERVICE MANAGEMENT | 2022年 / 19卷 / 01期
基金
北京市自然科学基金;
关键词
Resource management; Bandwidth; Measurement; Optical fiber communication; Optical fiber networks; OFDM; Entropy; Elastic optical networks; service-driven; resource allocation; fragmentation; neighboring links; blocking probability; MULTIFLOW VIRTUAL CONCATENATION; SPECTRUM ASSIGNMENT; CROSSTALK-AWARE; DEFRAGMENTATION; CORE; ALGORITHMS; EFFICIENT; FRAMEWORK; SCHEME; VONE;
D O I
10.1109/TNSM.2021.3116757
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
To support the fifth-generation bandwidth-hungry applications, such as the Internet of Things, virtual reality, augmented reality, and cloud computing, elastic optical networks have become the most promising infrastructure that allocates bandwidths for services flexibility. Fragmentation caused by dynamic resource allocation deteriorates the availability of resources in networks, increasing the blocking of requests. The fragmentation occurs not only in the used path but also in the neighboring links that are not included in the used path; they are connected to the used path. This paper proposes a service-driven fragmentation-aware (SDFA) resource allocation scheme to enhance resource utilization by avoiding fragmentation with the joint consideration of the used path and neighboring links. A service-driven fragmentation metric (SDFM) is, for the first time, presented to estimate the fragmentation in the used path and neighboring links. The SDFA scheme prefers to assign services at the spectrum slots, which leads to the minimum value of SDFM. Simulation results indicate that SDFA outperforms four conventional fragmentation-aware resource allocation schemes in terms of blocking probability and resource utilization due to a lower fragmentation in the network.
引用
收藏
页码:353 / 365
页数:13
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