Networking

Performance Analysis of Multi-Channel Wireless Infrastructure Networks

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Executive Summary

Wireless infrastructure networks that provide ubiquitous connectivity to mobile nodes in metro areas are becoming increasingly popular. The nodes in such backbone networks are often equipped with multiple transceivers to allow for simultaneous transmissions in multiple non-overlapping channels. This paper develops an analytical model for evaluating the throughput and delay performance of wireless infrastructure networks employing Slotted Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) over multiple channels. The analytical model, which takes into account the correlation due to multi-hop transmissions, approximates the performance observed through simulations accurately.

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