Electronically-switched Directional Antennas for Low-power Wireless Networks: A Prototype-driven Evaluation
Number of Authors: 5
2012 (English)Report (Other academic)
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.
Place, publisher, year, edition, pages
Kista, Sweden: Swedish Institute of Computer Science , 2012, 8.
SICS Technical Report, ISSN 1100-3154 ; 2012:08
Computer and Information Science
IdentifiersURN: urn:nbn:se:ri:diva-24056OAI: oai:DiVA.org:ri-24056DiVA: diva2:1043135