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Zero Overhead Device Tracking in 60 GHz Wireless Networks using Multi-Lobe Beam Patterns

Loch, Adrian and Assasa, Hany and Palacios, Joan and Widmer, Joerg and Suys, Hans and Debaillie, Björn (2017) Zero Overhead Device Tracking in 60 GHz Wireless Networks using Multi-Lobe Beam Patterns. In: The 13th International Conference on emerging Networking EXperiments and Technologies (ACM CoNEXT 2017), 12-15 December 2017, Seoul, South Korea.

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Abstract

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 significant overhead, which may significantly reduce the performance of millimeter-wave communication, particularly in mobile scenarios. In this paper, 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 5◦ in most cases. We also perform simulations to validate our approach in a wide range of scenarios, achieving up to 2× throughput gain.

Item Type: Conference or Workshop Papers (Paper)
Uncontrolled Keywords: Networks: Mobile networks; Physical links; Network experimentation; Hardware: Beamforming.
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Adrian Loch
Date Deposited: 28 Sep 2017 07:58
Last Modified: 04 Dec 2017 13:00
URI: http://eprints.networks.imdea.org/id/eprint/1673

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