Spectrum-efficient hybrid protection with dedicated and shared paths in elastic optical data center networks

IF 7.7 2区计算机科学 Q1 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Journal of Network and Computer Applications Pub Date : 2025-07-08 DOI:10.1016/j.jnca.2025.104238

Xu Zhang , Hankun Zeng , Chuan Feng , Yuxin Xu , Fan Zhang , Xiaoxue Gong , Lei Guo

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引用次数: 0

Abstract

Spectral efficiency is essential for ensuring the survivability of service requests that require multi-level protection in elastic optical data center networks (EODCNs). To tackle the survivability issue, we first create a system model that includes a network model, a service request model, and a dedicated and shared paths model. Next, we develop an integer linear programming (ILP) model aimed at minimizing the maximum index of allocated frequency slots (FSs) for various service requests with dedicated path protection (DPP) and shared backup path protection (SBPP) levels. Following this, we propose a spectrum-efficient hybrid protection algorithm (SEHPA) for survivable routing, modulation level, and spectrum assignment. Finally, we solve the ILP problem in a small-scale topology and evaluate the SEHPA algorithm in different large-scale topologies. Simulation results indicate that the SEHPA algorithm can reduce the percentage of unserviced requests by 16.1% while utilizing fewer network resources.

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弹性光数据中心网络中具有专用和共享路径的频谱高效混合保护

在弹性光数据中心网络（EODCNs）中，频谱效率对于确保需要多级保护的业务请求的生存性至关重要。为了解决生存性问题，我们首先创建一个系统模型，其中包括网络模型、服务请求模型以及专用和共享路径模型。接下来，我们开发了一个整数线性规划（ILP）模型，旨在最小化具有专用路径保护（DPP）和共享备份路径保护（SBPP）级别的各种业务请求的分配频率槽（fs）的最大索引。接下来，我们提出了一种频谱高效混合保护算法（SEHPA），用于可生存路由，调制电平和频谱分配。最后，我们解决了小尺度拓扑下的ILP问题，并对不同大尺度拓扑下的SEHPA算法进行了评估。仿真结果表明，SEHPA算法在使用较少的网络资源的同时，可以将未服务请求的百分比降低16.1%。

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

Journal of Network and Computer Applications 工程技术-计算机：跨学科应用

CiteScore

21.50

自引率

3.40%

发文量

142

审稿时长

37 days

期刊介绍： The Journal of Network and Computer Applications welcomes research contributions, surveys, and notes in all areas relating to computer networks and applications thereof. Sample topics include new design techniques, interesting or novel applications, components or standards; computer networks with tools such as WWW; emerging standards for internet protocols; Wireless networks; Mobile Computing; emerging computing models such as cloud computing, grid computing; applications of networked systems for remote collaboration and telemedicine, etc. The journal is abstracted and indexed in Scopus, Engineering Index, Web of Science, Science Citation Index Expanded and INSPEC.