Communication protocols and channel assignment algorithms for high-bandwidth multichannel networks: Design and analysis.

Abstract

With the rapid progress in Wavelength Division Multiplexing (WDM) techniques, high-bandwidth multichannel networks with many concurrent gigabit channels over a single-mode fiber become feasible. In this thesis, we investigate communication protocols and channel assignment problems in these high-bandwidth multichannel networks. We propose a dynamic channel sharing protocol to accommodate both connection-oriented real-time traffic and connectionless non-real-time traffic efficiently. We further design a multiconnection protocol to allow each originating station to set up connections with multiple terminating stations and allow each terminating station to keep connections with multiple originating stations. To support these protocols, we also propose some dynamical channel assignment algorithms for connectionless traffic. These algorithms are further extended to two-layer high-bandwidth multichannel networks. The proposed channel assignment algorithms are compared with some existing algorithms found in the literature. Analytical performance results in terms of blocking probability and channel utilization for the proposed protocols, and also efficiency and computational complexity for the proposed algorithms, are given. Results show superior performance of these proposed protocols and algorithms.