Facilitating Robust 60 GHz Network Deployment By Sensing Ambient Reflectors


Teng Wei, University of Wisconsin—Madison; Anfu Zhou, Beijing University of Posts and Telecommunications; Xinyu Zhang, University of Wisconsin—Madison


60 GHz millimeter-wave networks represent the next frontier in high-speed wireless access technologies. Due to the use of highly directional and electronically steerable beams, the performance of 60 GHz networks becomes a sensitive function of environment structure and reflectivity, which cannot be handled by existing networking paradigms. In this paper, we propose E-Mi, a framework that harnesses 60 GHz radios’ sensing capabilities to boost network performance. E-Mi uses a single pair of 60 GHz transmitter and receiver to sense the environment. It can resolve all dominant reflection paths between the two nodes, from which it reconstructs a coarse outline of major reflectors in the environment. It then feeds the reflector information into a ray-tracer to predict the channel and network performance of arbitrarily located links. Our experiments on a custom-built 60 GHz testbed verify that E-Mi can accurately sense a given environment, and predict the channel quality of different links with 2.8 dB median error. The prediction is then used to optimize the deployment of 60 GHz access points, with 2:2x to 4:5x capacity gain over empirical approaches.

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@inproceedings {201466,
author = {Teng Wei and Anfu Zhou and Xinyu Zhang},
title = {Facilitating Robust 60 {GHz} Network Deployment By Sensing Ambient Reflectors},
booktitle = {14th USENIX Symposium on Networked Systems Design and Implementation (NSDI 17)},
year = {2017},
isbn = {978-1-931971-37-9},
address = {Boston, MA},
pages = {213--226},
url = {https://www.usenix.org/conference/nsdi17/technical-sessions/presentation/wei-teng},
publisher = {USENIX Association},
month = mar,

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