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Session 4: Paper 2

acrobat_pdf_icon.gifFRACTEL: A Fresh Perspective on (Rural) Mesh Networks

Authors: Kameswari Chebrolu and Bhaskaran Raman (IIT Kanpur, India)

Abstract: The use of commodity 802.11 hardware to provide network connectivity to rural regions is an appealing proposition. In this paper, we consider such networks, with a combination of long-distance and short-distance links. In such a setting, we offer a fresh perspective on a variety of technical issues in multi-hop mesh networks. To support QoS for voice, video-based real-time applications, the use of a TDMA-based MAC is appropriate. In this context, we argue that existing approaches to TDMA scheduling and channel allocation are either inapplicable, or are too general and hence complicated. We apply extensive domain knowledge in designing a solution applicable in our context. We also suggest appropriate implementation strategies for the TDMA MAC, capable of scaling to large networks. In all of the above topics, we articulate open technical issues wherever applicable.

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