vioft2nntf2t|tblJournal|Abstract_paper|0xf4ff42621c000000f01e000001000500 In wavelength division multiplexed all optical networks; lightpath establishes a connection between sending and receiving nodes bypassing the electronic processing at intermediate nodes. One of the prime objectives of Routing and Wavelength Assignment (RWA) problem is to maximize the number of connections efficiently by choosing the best routes. Although there are several algorithms available, improving the blocking performance in optical networks and finding optimal solutions for RWA problem has still remained a challenging issue. Wavelength conversion can be helpful in restricting the problem of wavelength continuity constraint but it increases complexity in the network. In this paper, we propose new weight dependent routing and wavelength assignment strategy for all optical networks without use of wavelength converters. Proposed weight function reduces blocking probability significantly, improving the network performance at various load conditions. Further, due to absence of wavelength converters, the cost and complexity of network reduces. Results show that the proposed strategy performs better than earlier reported methods.
Shilpa S. Patil1, Bharat S. Chaudhari2, Baojun Li3
Maharashtra Institute of Technology, India1, Maharashtra Institute of Technology, India2, Sun Yat-Sen University, China3
WDM, Lightpath, RWA, NSFnet, Blocking Probability
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| Published By :
ICTACT
Published In :
ICTACT Journal on Communication Technology
( Volume: 6 , Issue: 3 , Pages: 1131-1135 )
Date of Publication :
September 2015
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123
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