Mottola, Luca and Voigt, Thiemo and Picco, Gian Pietro and Quartulli, Antonio and Österlind, Fredrik (2012) Electronically-switched Directional Antennas for Low-power Wireless Networks: A Prototype-driven Evaluation. [SICS Report]
We study the benefits of electronically-switched directional antennas in low-power wireless networks. This antenna technology may improve energy efficiency by increasing the communication range and by alleviating contention in directions other than the destination, but in principle requires a dedicated network stack. Unlike most existing works, we start by characterizing a real-world antenna prototype, and apply this to an existing low-power wireless stack, which we adapt with minimal changes. Our results show that: i) the combination of a low-cost directional antenna and a conventional network stack already brings significant performance improvements, e.g., nearly halving the radio-on time per delivered packet; ii) the margin of improvement available to alternative clean-slate protocol designs is similarly large and concentrated in the control rather than the data plane; iii) by artificially modifying our antenna's link-layer model, we can point at further potential benefits opened by different antenna designs.
|Item Type:||SICS Report|
|Deposited By:||Vicki Carleson|
|Deposited On:||17 Sep 2012 10:47|
|Last Modified:||17 Sep 2012 10:47|
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