Room 1.1/2 IMDEA Networks Institute, Avda. del Mar Mediterráneo 22, 28918 Leganés – Madrid
Millimeter-wave devices must use highly directional antennas to achieve GBit/s data rates over reasonable distances due to the high path loss. As a consequence, it is important to precisely align the antenna beams between sender and receiver. Even minor movement or rotation of a device can result in beam misalignment and thus a strong performance degradation. Existing work as well as standards such as IEEE 802.11ad tackle this issue by means of antenna sector probing. This comes at the expense of a high overhead, which may significantly reduce the performance of millimeter-wave communication, particularly in mobile scenarios. In this talk, we present a mechanism that can track both movement and rotation of 60 GHz mobile devices with zero overhead. To this end, we transmit part of the preamble of each packet using a multi-lobe beampattern. Our approach does not require any additional control messages and is backward compatible with 802.11ad. We implement our scheme on a 60 GHz testbed using phased antenna arrays, and show that we reduce the angle error to less than 5º in most cases. We also perform simulations to validate our approach in a wide range of scenarios, achieving up to 2x throughput gain.
About Adrian Loch
Adrian Loch is currently a post-doc researcher at IMDEA Networks in Madrid, Spain. He graduated in Electrical Engineering from Universidad Politécnica de Madrid and Technische Universität Darmstadt in 2011 after completing an international double degree program. After that, he obtained a PhD in Computer Science from Technische Universität Darmstadt in March 2015. His main areas of interest lie in cooperative communications for both wireless access and wireless multihop networks. Currently, he focuses on millimeter-wave communications and, in particular, wireless LANs such as in the 802.11ad standard.
This event will be conducted in English