A study on novel routing and wavelength assignment algorithms for the wavelength routed optical networks

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This thesis discusses the routing and wavelength assignment (RWA) problem for the wavelength routed optical networks (WRONs). Firstly, we present an optical network design and evaluation simulator which is specialized in design and evaluation of optical network topology, reconfiguration, restoration, and RWA algorithm. Our simulator is implemented with modularized, platform-independent, and extensible architecture which is light-weight and suitable to verify the simulation results. Next, we propose two novel heuristic RWA algorithms for the static and dynamic traffic models, respectively. The proposed algorithm for the static model evenly distributes and compactly arranges the routing paths over the network according to load balanced scheme, namely minimum loaded path first (MLPF). The MLPF algorithm can increase network throughput and reduce blocking probability. For the dynamic model, we propose dynamic hop count shifting (DYHOS) algorithm which can dynamically adjust hop count of a lightpath according to the volume of the incoming traffic load and blocking ratio in the network. The DYHOS algorithm finds an available route while minimizing the waste of network resources. This algorithm also increases the network throughput and reduces the blocking probability. Through the computer simulation, we verify the performance of proposed algorithms, where the performance is the blocking probability for the given number of wavelength used.
Advisors
Choi, Jin-Seek최진식
Description
한국정보통신대학교 : 공학부,
Publisher
한국정보통신대학교
Issue Date
2004
Identifier
392339/225023 / 020024040
Language
eng
Description

학위논문(석사) - 한국정보통신대학교 : 공학부, 2004, [ vii, 53 p. ]

Keywords

Novel routing; Wavelength assignment algorithms; Wavelength routed optical networks

URI
http://hdl.handle.net/10203/55255
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=392339&flag=dissertation
Appears in Collection
School of Engineering-Theses_Master(공학부 석사논문)
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