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China Communications 2023年第7期20卷 89-107页

作者： Mai Yang Qi Zhang Haipeng Yao Ran Gao Xiangjun Xin Feng Tian Weiying Feng Dong Chen Fu Wang Qinghua Tian Jinxi Qian School of Electronic Engineering Beijing University of Posts and Telecommunications(BUPT)Beijing 100876China Beijing Key Laboratory of Space-ground Interconnection and Convergence State Key Laboratory of Information Photonics and Optical CommunicationsSchool of Electronic EngineeringBeijing University of Posts and Telecommunications(BUPT)Beijing 100876China School of Information and Communication Engineering Beijing University of Posts and Telecommunications(BUPT)Beijing 100876China Beijing Institute of Technology Beijing 100081China Beihang University Beijing 100191China China Academy of Space Technology(CAST) Beijing 100094China

With the development of satellite communication,in order to solve the problems of shortage of on-board resources and refinement of delay requirements to improve the communication performance of satellite optical networks,this paper proposes a bee colony optimization algorithm for routing and wavelength assignment based on directional guidance(DBCO-RWA)in satellite optical *** D-BCORWA,directional guidance based on relative position and link load is defined,and then the link cost function in the path search stage is established based on the directional guidance ***,feasible solutions are expanded in the global optimization *** wavelength utilization,communication success probability,blocking rate,communication hops and convergence characteristic are *** results show that the performance of the proposed algorithm is improved compared with existing algorithms.

关键词： routing and wavelength assignment satel-lite optical networks bee colony optimization algo-rithm directional guidance feasible solution extension

A Distributed routing and wavelength assignment Algorithm for Online Multicast in All-Optical WDM Networks

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Wuhan University Journal of Natural Sciences 2002年第1期7卷 27-36页

作者： Huang Chuan-he, Chen Xin-meng, Jia Xiao-hua School of Computer, Wuhan University, Wuhan 430072, Hubei, China School of Computer Wuhan University Wuhan Hubei China

routing and wavelength assignment for online real-time multicast connection setup is a difficult task due to the dynamic change of availabilities of wavelengths on links and the consideration of wavelength conversion delay in WDM networks. This paper presents a distributed routing and wavelength assignment scheme for the setup of real-time multicast connections. It integrates routing and wavelength assignment as a single process, which greatly reduces the connection setup time. The proposed routing method is based on the Prim’s MST (Minimum Spanning Tree) algorithm and the K-restricted breadth-first search method, which can produce a sub-minimal cost tree under a given delay bound. The wave-length assignment uses the least-conversion and load balancing strategies. Simulation results show that the proposed algorithm is suitable for online multicast connection establishment in WDM networks.

关键词： Key words WDM networks routing and wavelength assignment multicast routing delay bounded routing

Dynamic routing and wavelength assignment for Multi-Lightpath Demands

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Wuhan University Journal of Natural Sciences 2005年第2期10卷 417-420页

作者： XIAOShi-yuan JINXin LIUXian-de SchoolofInformationTechnologyandEngineering HuazhongUniversityofScienceandTechnologyWuhan430074HubeiChina

In wavelength division multiplexing (WDM) networks without wavelengthconversion functionality, we convert the dynamic routing and wavelength assignment problem formulti-lightpath demands to the edge-disjoint paths problem, and propose a new algorithm. Thecomputer simulations show that the proposed algorithm has better blocking probability performancethan a sequential algorithm, which first separates a multi-lightpath demand into mutilplesingle-lightpath demands, then uses the fixed-alternate routing-first fit wavelength assignment(AR-FF) algorithm for each single-lightpath demand.

关键词： WDM network routing and wavelength assignment multi-lightpath demand edge-disjoint path

An Improved Ant Colony Based Algorithm for Dynamic routing and wavelength assignment Scheme in Optical Networks

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An Improved Ant Colony Based Algorithm for Dynamic Routing a...

ADAPTIVE routing and wavelength assignment ALGORITHMS FOR HIERARCHICAL ARCHITECTURE IN ASON

2012年计算机应用与系统建模国际会议

作者： Jianhua Shen Xi Cheng College of Communication and Information Engineering Nanjing University of Posts & Telecommunications

Dynamic routing and wavelength assignment (RWA) is a key problem in intelligent optical networks. This paper presents an improved ant colony algorithm to solve the RWA problem which introduced link idle as constraint into the ant transition probability. At the same time, the random disturbance is added to prevent premature convergence into local optimal path. Simulation shows that the modified algorithm decreases the blocking probability and increases the resources utilization comparing with the traditional Dijkstra+FF algorithm, respectively.

关键词： Intelligent Optical Network routing and wavelength assignment Ant Colony Algorithm Blocking Probability Resource Utilization

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ADAPTIVE ROUTING AND WAVELENGTH ASSIGNMENT ALGORITHMS FOR HI...

routing with constraint and wavelength assignment based on GMPLS support

2009 IEEE International Conference on Network Infrastructure and Digital Content（IC-NIDC 2009）

作者： Pei Luo Shanguo Huang Bin Li Jie Zhang Wanyi Gu Key Laboratory of Optical Communication and Lightwave Technologies Ministry of Education Beijing University of Posts and Telecommunications Beijing

The hierarchical routing and wavelength assignment problem in Automatic Switched Optical Network （ASON） is *** on our analysis,three adaptive algorithms called MLLR （Multi-Layer Least Loaded routing Algorithm）,WMLCR （wavelength-graph-based Multi-Layer Least Congestion routing Algorithm） and BMR （Backtracking-based Multi-Layer routing Algorithm） are proposed.A platform named AHORSP （ASON based hierarchical optimal routing ＆ signaling platform） supporting our routing scheme is proposed and *** simulation shows that the proposed algorithms can have comprehensive application on the basis of their convenience to be realized,low BP performance and acceptable operation time.

关键词： hierarchical routing fixed alternate routing ASON resource balancing routing and wavelength assignment

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High Technology Letters 2006年第3期12卷 272-275页

作者：张沪寅 Wu Chanle Ye Gang Wu Libing Xiong Qing School of Computer Wuhan University. Wuhan430079 P.R.China

To solve the routing and wavelength assignment problem in the optical network, this paper put forward the metric model with sparse wavelength conversion and routing algorithm with pruning （RAP） in order to efficiently realize the resource management in the unified way. Related methods with dynamic and adaptation characters considered the link state conditions and certain heuristic information. They can be applied to current network environments. In particular, the simulation was made according to the selfsimilar traffic and the results showed that the corresponding methods not only provided service differentiation but also reduced the overall average blocking Drobabilitv.

关键词： GMPLS QoS self-similar traffic routing and wavelength assignment

An overview of ML-based applications for next generation optical networks

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Science China(Information Sciences) 2020年第6期63卷 31-46页

作者： Ruoxuan GAO Lei LIU Xiaomin LIU Huazhi LUN Lilin YI Weisheng HU Qunbi ZHUGE Shanghai Institute for Advanced Communication and Data Science State Key Laboratory of Advanced Optical Communication Systems and NetworksDepartment of Electronic Engineering Shanghai Jiao Tong University

Over the past few decades, the demand for the capacity and reliability of optical networks has continued to grow. In the meantime, optical networks with larger knowledge scales have become sources of numerous heterogeneous data. In order to handle these new challenges, many issues need to be resolved,among which the low-margin optical networks design, power optimization, routing and wavelength assignment(RWA), failure management are quite important. However, the use of traditional algorithms in the above four applications shows some shortcomings. Fortunately, artificial intelligence(AI), especially machine learning(ML), is regarded as one of the most promising methods to overcome these shortcomings. In this study, we review the applications of ML methods in solving these four issues. Although many ML-based researches have emerged, the applications of ML techniques in optical networks still face challenges. Therefore, we also discuss some possible future directions of investigating ML-based approaches in optical networks.

关键词： optical networks artificial intelligence machine learning system margin power optimization routing and wavelength assignment failure management

Research on Fault Repair Method of All-Optical Network Based on SDN

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China Communications 2020年第6期17卷 180-195页

作者： Zhongnan Zhao Huiqiang Wang Jian Wang Hongwei Guo College of Computer Science and Technology Harbin Engineering UniversityHarbin 150001China School of Computer Science and Technology Harbin University of Science and TechnologyHarbin 150080China Department of Mathematics Heilongjiang Institute of TechnologyHarbin 150015China

All-optical network,as a new backbone network,is featured with high speed and large capacity *** may be out of order due to various faults while providing high-performance transmission service,thus more effective fault repairing methods are required.A routing and wavelength assignment method based on SDN is designed and analyzed from the perspective of service function chaining in this paper.A multi-objective integer linear programming model based on impairment-aware and scheduling time is constructed by combining the unified control of control plane with the resource allocation mode of service function ***,an improved Firefly Algorithm is adopted to solve the model for obtaining a better scheduling scheme,so as to the resources are allocated on-demand in a more flexible and efficient way,which effectively improved the self-recovery capability of the *** the simulation experiments,Through the comparison between the method proposed and methods based on centralization and distribution,method proposed in the paper is superior to the compared ones in the indexes of survivability,blocking probability,link recovery time,and presents a better scheduling performance,makes the system has stronger ability of self-healing in the face of failure.

关键词： SDN all-optical network fault repair routing and wavelength assignment

Power-efficient RWA in dynamic WDM optical networks considering different connection holding times

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Science China(Information Sciences) 2013年第4期56卷 60-68页

作者： DU Shu ZHANG ShengFeng PENG YunFeng LONG KePing Research Center for Optical Internet & Mobile Information Networks University of Electronic Science and Technology of China Institute of Advanced Network Technology University of Science & Technology Beijing

The challenges imposed by environmental issues,such as global warming and the energy crisis,are demanding more responsible energy usage,including in the optical networking *** optical transmission networks,most of the electrical power is consumed by the optical-electrical-optical conversion in optical *** optical network control plane technologies allow idle optical repeaters to be put into a low-power sleep *** by this,we propose a novel power-efficient routing and wavelength assignment(RWA) algorithm,called *** HTAPE algorithm exploits the knowledge of the connection holding times to minimize the number of optical repeaters in the active mode,and hence reduce the total electricity consumption of the optical *** test the new algorithm on the typical CERNET and USNET *** with traditional RWA algorithms without holding-time-awareness,it is observed that the HTAPE algorithm yields significant reductions in power consumption.

关键词： routing and wavelength assignment power consumption connection holding time dynamic WDM optical network

Evaluating Link-State Update Triggers in wavelength-Routed Networks

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Evaluating Link-State Update Triggers in Wavelength-Routed N...