An efficient network architecture and protocols for WDM networks

Abstract

AbstractIn this paper we study a single—hop WDM network for a passive star topology, based on a new network architecture that uses several wavelengths as control channels with an appropriate Network Interface Unit at each station for coordination of packet transmissions on the data channels referred to as Multichannel Control Architecture (MCA). With MCA, control information is distributed over the total control channels reducing the electronic processing bottleneck at one of end station. We propose a multiple access protocol which operates asynchronously, i. e data channels are not slotted. The proposed scheme adopts the ALOHA protocol for the access to MCA and data channels. Analytic model is developed and analyzed for performance measures evaluation based on Poisson approximations statistics of both the infinite and Finite population. Numerical results are discussed for various number of control and data channels. The effect of receiver collision is analyzed and estimated by the average rejection probabilities at destination.