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A class of centralized high‐performance protocols for single‐hop lightwave networks
Author(s) -
Papadimitriou Georgios I.,
Pomportsis Andreas S.
Publication year - 1999
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/(sici)1099-1131(199909/12)12:5/6<363::aid-dac416>3.0.co;2-q
Subject(s) - computer science , network packet , wavelength division multiplexing , star network , computer network , wavelength , packet switching , star (game theory) , converters , electronic engineering , network topology , optics , power (physics) , physics , ring network , quantum mechanics , astrophysics , engineering
A new class of protocols for WDM star networks is introduced. According to the proposed protocols, two or more stations share each wavelength and transmit their packets in a random access fashion. An array of tunable electro‐optic filters or tunable wavelength converters, placed at the network hub, allows at most one packet per wavelength to pass to the star coupler, at each time slot. Furthermore, the selection of the passing packets is implemented in such a way that receiver conflicts are avoided. When wavelength converters are used instead of electro‐optic filters, the hub is capable of uniformly distributing the incoming packets to the available wavelengths. Thus, the load is balanced between the wavelengths, resulting in a further performance improvement. The performance of the proposed protocols is studied via analytical and simulation results which indicate that a WDM star network operating under these protocols achieves a high performance under any load conditions. Copyright © 1999 John Wiley & Sons, Ltd.