Resource allocation method for reliable transmission of requests based on shared backup path protection and fragmentation-aware in elastic optical networks

IF 1.9 4区计算机科学 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS

Optical Switching and Networking Pub Date : 2025-03-01 DOI:10.1016/j.osn.2025.100802

Huanlin Liu , Xingji Huo , Yong Chen , Bo Liu , Runze Ge , Di Deng , Haonan Chen

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引用次数: 0

Abstract

Elastic optical networks can effectively adapt to complex and dynamic network conditions, improving spectrum resource utilization. However, if the link fails, it will cause significant data loss or interruption to the network operator. Therefore, we propose a reliable routing, modulation, and spectrum allocation (SBPP-FA-RRMSA) algorithm based on shared backup path protection (SBPP) and fragmentation-aware to guarantee reliable transmission of requests and solve spectrum fragmentation problem. In order to save resources, we adopt the SBPP method, we design the reliability of requests based on path failure probability, and also design a path cost function combined with the path resources to select the transmission path. Then, we propose a dynamic spectrum partitioning method to guarantee non-interference of the working resources and the backup resources. Finally, in terms of resource allocation, we design a path fragmentation ratio to allocate working resources, and a spectrum fitness function to allocate backup resources. Simulation results show that under the premise of considering link failures, the proposed SBPP-FA-RRMSA has lower bandwidth blocking probability and fragmentation ratio compared with the algorithms that do not consider the probability of failures, fragmentation, and shared backup path protection, and it also makes full use of the sharing of backup resources.

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弹性光网络中基于共享备份路径保护和碎片感知的请求可靠传输资源分配方法

弹性光网络能够有效适应复杂动态的网络环境，提高频谱资源的利用率。但是，如果链路出现故障，将会对网络运营商造成严重的数据丢失或中断。为此，我们提出了一种基于共享备份路径保护（SBPP）和分片感知的可靠路由、调制和频谱分配（SBPP- fa - rrmsa）算法，以保证请求的可靠传输，解决频谱分片问题。为了节省资源，采用SBPP方法，基于路径失效概率设计请求的可靠性，并结合路径资源设计路径代价函数来选择传输路径。然后，我们提出了一种动态频谱划分方法，以保证工作资源和备份资源的不干扰。最后，在资源分配方面，我们设计了路径碎片比来分配工作资源，设计了频谱适应度函数来分配备份资源。仿真结果表明，在考虑链路故障的前提下，与不考虑故障概率、分片和共享备份路径保护的算法相比，所提出的SBPP-FA-RRMSA具有更低的带宽阻塞概率和分片率，并且充分利用了备份资源的共享性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Optical Switching and Networking COMPUTER SCIENCE, INFORMATION SYSTEMS-OPTICS

CiteScore

5.20

自引率

18.20%

发文量

审稿时长

77 days

期刊介绍： Optical Switching and Networking (OSN) is an archival journal aiming to provide complete coverage of all topics of interest to those involved in the optical and high-speed opto-electronic networking areas. The editorial board is committed to providing detailed, constructive feedback to submitted papers, as well as a fast turn-around time. Optical Switching and Networking considers high-quality, original, and unpublished contributions addressing all aspects of optical and opto-electronic networks. Specific areas of interest include, but are not limited to: • Optical and Opto-Electronic Backbone, Metropolitan and Local Area Networks • Optical Data Center Networks • Elastic optical networks • Green Optical Networks • Software Defined Optical Networks • Novel Multi-layer Architectures and Protocols (Ethernet, Internet, Physical Layer) • Optical Networks for Interet of Things (IOT) • Home Networks, In-Vehicle Networks, and Other Short-Reach Networks • Optical Access Networks • Optical Data Center Interconnection Systems • Optical OFDM and coherent optical network systems • Free Space Optics (FSO) networks • Hybrid Fiber - Wireless Networks • Optical Satellite Networks • Visible Light Communication Networks • Optical Storage Networks • Optical Network Security • Optical Network Resiliance and Reliability • Control Plane Issues and Signaling Protocols • Optical Quality of Service (OQoS) and Impairment Monitoring • Optical Layer Anycast, Broadcast and Multicast • Optical Network Applications, Testbeds and Experimental Networks • Optical Network for Science and High Performance Computing Networks