Multicast Wavelength Assignment to Maximize the Network Capacity using ILP formulation in WDM Networks
碩士 === 元智大學 === 資訊工程學系 === 93 === In general, the multicast routing and wavelength assignment (MC-RWA) can be subdivided as routing and wavelength assignment issues in WDM mesh networks. Previous studies on WDM multicast have mainly focused on the WDM multicast routing. The multicast wavelength assi...
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ndltd-TW-093YZU003920542015-10-13T11:39:20Z http://ndltd.ncl.edu.tw/handle/10842219232126100961 Multicast Wavelength Assignment to Maximize the Network Capacity using ILP formulation in WDM Networks Ying-Fung Chuang 莊英鈁 碩士 元智大學 資訊工程學系 93 In general, the multicast routing and wavelength assignment (MC-RWA) can be subdivided as routing and wavelength assignment issues in WDM mesh networks. Previous studies on WDM multicast have mainly focused on the WDM multicast routing. The multicast wavelength assignment problem is studied in this paper. A unicast routing path can be established by a lightpath in an all-optical network. However, in multicasting case, a multicast routing tree can be established by a single light tree or several lightpaths, or a combination of several light trees and lightpaths. We propose a wavelength assignment algorithm to find an optimal combination of lightpaths and light trees to construct a new arrival multicast session. First of all, two cost functions are given to evaluate the establishing cost for each feasible wavelength, and then find a set of wavelength which covers all destinations with the minimal cost using Integer Linear Program (ILP) formulation. We focus on maximizing the total number of users served in a multicast session and the network capacity. The simulation results show that the proposed algorithm can improve system resource utilization and reduce the blocking probability, compared with the First-Fit algorithm. I-Shyan Hwang 黃依賢 2005 學位論文 ; thesis 0 en_US |
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碩士 === 元智大學 === 資訊工程學系 === 93 === In general, the multicast routing and wavelength assignment (MC-RWA) can be subdivided as routing and wavelength assignment issues in WDM mesh networks. Previous studies on WDM multicast have mainly focused on the WDM multicast routing. The multicast wavelength assignment problem is studied in this paper. A unicast routing path can be established by a lightpath in an all-optical network. However, in multicasting case, a multicast routing tree can be established by a single light tree or several lightpaths, or a combination of several light trees and lightpaths. We propose a wavelength assignment algorithm to find an optimal combination of lightpaths and light trees to construct a new arrival multicast session. First of all, two cost functions are given to evaluate the establishing cost for each feasible wavelength, and then find a set of wavelength which covers all destinations with the minimal cost using Integer Linear Program (ILP) formulation. We focus on maximizing the total number of users served in a multicast session and the network capacity. The simulation results show that the proposed algorithm can improve system resource utilization and reduce the blocking probability, compared with the First-Fit algorithm.
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I-Shyan Hwang |
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I-Shyan Hwang Ying-Fung Chuang 莊英鈁 |
author |
Ying-Fung Chuang 莊英鈁 |
spellingShingle |
Ying-Fung Chuang 莊英鈁 Multicast Wavelength Assignment to Maximize the Network Capacity using ILP formulation in WDM Networks |
author_sort |
Ying-Fung Chuang |
title |
Multicast Wavelength Assignment to Maximize the Network Capacity using ILP formulation in WDM Networks |
title_short |
Multicast Wavelength Assignment to Maximize the Network Capacity using ILP formulation in WDM Networks |
title_full |
Multicast Wavelength Assignment to Maximize the Network Capacity using ILP formulation in WDM Networks |
title_fullStr |
Multicast Wavelength Assignment to Maximize the Network Capacity using ILP formulation in WDM Networks |
title_full_unstemmed |
Multicast Wavelength Assignment to Maximize the Network Capacity using ILP formulation in WDM Networks |
title_sort |
multicast wavelength assignment to maximize the network capacity using ilp formulation in wdm networks |
publishDate |
2005 |
url |
http://ndltd.ncl.edu.tw/handle/10842219232126100961 |
work_keys_str_mv |
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