TY - GEN
T1 - LiSteer
T2 - 24th Annual International Conference on Mobile Computing and Networking, MobiCom 2018
AU - Haider, Muhammad Kumail
AU - Ghasempour, Yasaman
AU - Koutsonikolas, Dimitrios
AU - Knightly, Edward W.
N1 - Publisher Copyright:
© 2018 Association for Computing Machinery.
PY - 2018/10/15
Y1 - 2018/10/15
N2 - We present LiSteer, a novel system that steers mmWave beams at mobile devices by repurposing indicator LEDs on wireless Access Points (APs) to passively acquire direction estimates using off-the-shelf light sensors. We demonstrate that LiSteer maintains beam alignment at the narrowest beamwidth level even in case of device mobility, without incurring any training overhead at mobile devices. Our extensive evaluation on a custom dual-band hardware platform comprising highly directional horn antennas as well as practical phased antenna arrays with electronic beam steering shows that LiSteer achieves direction estimates within 2.5 degrees of ground truth on average. Moreover, it achieves beam steering accuracy of more than 97% while in tracking mode, without incurring any client beam training or feedback overhead.
AB - We present LiSteer, a novel system that steers mmWave beams at mobile devices by repurposing indicator LEDs on wireless Access Points (APs) to passively acquire direction estimates using off-the-shelf light sensors. We demonstrate that LiSteer maintains beam alignment at the narrowest beamwidth level even in case of device mobility, without incurring any training overhead at mobile devices. Our extensive evaluation on a custom dual-band hardware platform comprising highly directional horn antennas as well as practical phased antenna arrays with electronic beam steering shows that LiSteer achieves direction estimates within 2.5 degrees of ground truth on average. Moreover, it achieves beam steering accuracy of more than 97% while in tracking mode, without incurring any client beam training or feedback overhead.
UR - http://www.scopus.com/inward/record.url?scp=85056814284&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85056814284&partnerID=8YFLogxK
U2 - 10.1145/3241539.3241542
DO - 10.1145/3241539.3241542
M3 - Conference contribution
AN - SCOPUS:85056814284
T3 - Proceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM
SP - 273
EP - 288
BT - MobiCom 2018 - Proceedings of the 24th Annual International Conference on Mobile Computing and Networking
PB - Association for Computing Machinery
Y2 - 29 October 2018 through 2 November 2018
ER -