End-to-end performance analysis and simulation of wireless LANs interconnected by WDM optical backbone

Abstract

The present work deals with end-to-end network performance andjsis and simulation of hierarchical network formed by htmconnection of wireless local area networks (WLANs) by wavelength-division multiplexed (WDM) optical backbone. The proposed architecture employs a NewDistributed-Coordination Function (New-DCF) [3] media access control (MAC) protocol for WLAN. In the case of WDM optical backbone, slotted-ALOHA and ALOHA are considered a s MAC protocols for control and data channels, respectively. In this presentation, the analysis and simulation results reveal that the probability of inter-WLAN communication and number of WLANs have significant impact on the backbone throughput and also on the end-to-end success probability of a packet in the entire network. Moreover, this presentation d e t e r " the number of users in a WLAN as well as number of WLANs can be accommodated for optimum utilization of the backbone for a required M c .