Mobility

DFMAC: DTN-Friendly Medium Access Control for Wireless Local Area Networks

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Executive Summary

In this paper, the authors consider a wireless communication network for both low-speed mobile nodes in densely populated hotspots and high-speed mobile nodes roaming in a large area. Wireless Local Area Networks (WLANs) are deployed in the hotspots, while a delay/Disruption Tolerant Network (DTN) provides services to roaming nodes in the large area with low node density. They investigate radio resource allocation for a DTN/WLAN integrated network, and propose a DTN-Friendly Medium Access Control (DFMAC) scheme for the hotspots. Analytical models are established to characterize the interactions between a DTN and WLANs under the proposed DFMAC.

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