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The present work deals with end-to-end network performance analysis and simulation of hierarchical network formed by interconnection of Wireless Local Area Networks (WLANs) by wavelength-division multiplexed (WDM) optical backbone. The proposed architecture employs a New-Distributed-Coordination Function (New-DCF) Media Access Control (MAC) protocol for WLAN. In the case of WDM optical backbone, slotted-ALOHA and ALOHA are considered as MAC protocols for control and data channels, respectively. In this paper, 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.
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