Title
Steering With Eyes Closed: Mm-Wave Beam Steering Without In-Band Measurement
Abstract
Millimeter-wave communication achieves multi-Gbps data rates via highly directional beamforming to overcome pathloss and provide the desired SNR. Unfortunately, establishing communication with sufficiently narrow beamwidth to obtain the necessary link budget is a high overhead procedure in which the search space scales with device mobility and the product of the sender-receiver beam resolution. In this paper, we design, implement, and experimentally evaluate Blind Beam Steering (BBS) a novel architecture and algorithm that removes in-band overhead for directional mm-Wave link establishment. Our system architecture couples mm-Wave and legacy 2.4/5 GHz bands using out-of-band direction inference to establish (overhead-free) multi-Gbps mm-Wave communication. Further, BBS evaluates direction estimates retrieved from passively overheard 2.4/5 GHz frames to assure highest mm-Wave link quality on unobstructed direct paths. By removing in-band overhead, we leverage mmWave's very high throughput capabilities, beam-width scalability and provide robustness to mobility. We demonstrate that BBS achieves 97.8% accuracy estimating direction between pairing nodes using at least 5 detection band antennas. Further, BBS successfully detects unobstructed direct path conditions with an accuracy of 96.5% and reduces the IEEE 802.11ad beamforming training overhead by 81%.
Year
Venue
Field
2015
2015 IEEE CONFERENCE ON COMPUTER COMMUNICATIONS (INFOCOM)
Link budget,Beamforming,Telecommunications,Computer science,Computer network,Beam steering,Robustness (computer science),Systems architecture,Throughput,Computer hardware,Beamwidth,Scalability
DocType
ISSN
Citations 
Conference
0743-166X
52
PageRank 
References 
Authors
2.06
15
4
Name
Order
Citations
PageRank
Thomas Nitsche11646.93
Adriana B. Flores21788.57
Edward W. Knightly34763371.38
Jörg Widmer43924328.38