Connectivity and Capacity of Multi-Channel Wireless Networks with Channel Switching Constraints

13 years 11 months ago

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— This paper argues for the need to address the issue of multi-channel network performance under constraints on channel switching. We present examples from emergent directions in wireless networking to motivate the need for such a study, and introduce some models to capture channel switching constraints. For some of these models, we study connectivity and capacity of a wireless network comprising n randomly deployed nodes, equipped with a single interface each, when there are c = O(logn) channels of equal bandwidth W c available. We consider an adjacent (c, f) channel assignment where a node may switch between f adjacent channels, but the adjacent channel block is randomly assigned. We show that the per-ﬂow capacity for this channel assignment model is Θ(W f cnlogn ). We then show how the adjacent (c,2) assignment maps to the case of untuned radios. We also consider a random (c, f) assignment where each node may switch between a pre-assigned random subset of f channels. For this m...

Vartika Bhandari, Nitin H. Vaidya

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