International Journal of Fuzzy Logic and Intelligent Systems

  • 제2권3호
  • /
  • Pages.194-197
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  • 2002
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  • 1598-2645(pISSN)
  • /
  • 2093-744X(eISSN)
한국지능시스템학회 (Korean Institute of Intelligent Systems)
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Development of New Algorithm for RWA Problem Solution on an Optical Multi-Networks

  • Tack, Han-Ho (Department of Electronic Engineering, Jinju National University) ;
  • Kim, Chang-Geun (Department of Computer Science, Jinju National University)
  • 발행 : 2002.12.01
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초록

This paper considers the problem of routing connections in a optical multi tree networks using WDM (Wavelength Division Multiplexing), where each connection between a pair of nodes in the network is assigned a path through the network and a wavelength on that path, so that connections whose paths share a common link in the network are assigned different wavelengths. The problem of optimal coloring of the paths on the optical multi-networks is NP-hard[1], but if that is the coloring of all paths, then there exists efficient polynomial time algorithm. In this paper, using a "divide & conquer" method, we give efficient algorithm to assign wavelengths to all the paths of a tree network based on the theory of [7]. Here, our time complexity is 0(n4log n).

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참고문헌

  1. T. Erlebach and K. Jansen. 'Scheduling of Virtual Connections in Fast Networks', Proc. of 4th Workshop on Parallel Systems and Algorithms PASA '96, 1996
  2. P. E. Green. Fiber-Optic Communication Networks, Prentice-Hall, 1992
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  4. J-C. Bermond, L. Gargano, S. Perennes, A. Rescigno and U. Vaccaro. 'Efficient Collective Communications in Optical Networks', Proc. 23nd ICALP'96, Paderborn Germany, 1996
  5. M. Mihail, C. Kaklamanis, S. Rao, 'Efficient Access to Optical Bandwidth', Proceedings of 36th Annual IEEE Symposium on Foundations of Computer Science (F0CS'95), 1995
  6. Dhritiman Baneqee and Biswanath Mukherjee, Member IEEE, 'A Practical Approach for Routing and Wavelength Assignment in Large Wavelength Assignment in Large Wavelength-Routed Optical Networks', IEEE Journal on selected areas in communications, Vol. 14, No. 5, June 1996
  7. Luisa Gargano, Pavol Hell and Stephane Perennes, 'Colouring Paths in Directed Symmetric Trees with Applications to WDM Routing', ICALP97, 1997