Customizing Indoor Wireless Coverage via 3D-Fabricated Reflectors
Judicious control of indoor wireless coverage is crucial in built environments. It enhances signal reception, reduces harmful interference, and raises the barrier for malicious attackers. Existing methods are either costly, vulnerable to attacks, or hard to configure. We present a low-cost, secure, and easy-to-configure approach that uses an easily-accessible, 3D-fabricated reflector to customize wireless coverage. With input on coarse-grained environment setting and preferred coverage (e.g., areas with signals to be strengthened or weakened), the system computes an optimized reflector shape tailored to the given environment. The user simply 3D prints the reflector and places it around a Wi-Fi access point to realize the target coverage. We conduct experiments to examine the efficacy and limits of optimized reflectors in different indoor settings. Results show that optimized reflectors coexist with a variety of Wi-Fi APs and correctly weaken or enhance signals in target areas by up to 10 or 6 dB, resulting to throughput changes by up to -63.3% or 55.1%.
|Xi Xiong, Justin Chan, Ethan Yu, Nisha Kumari, Ardalan Amiri Sani, Changxi Zheng, and Xia Zhou. Customizing Indoor Wireless Coverage via 3D-Fabricated Reflectors, ACM International Conference on Systems for Energy-Efficient Built Environments (BuildSys), November, 2017, Delft, The Netherlands. [PDF]|
|Justin Chan, Changxi Zheng, and Xia Zhou. 3D Printing Your Wireless Coverage, ACM Workshop on Hot Topics in Wireless (HotWireless), September, 2015, Paris, France. Hot Paper Award. [PDF]|
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