Techniques are described herein for using Radio Frequency (RF) signal features at multiple Access Points (APs) to detect the orientation of a client device. These orientation-related RF signal features may be used over time and over multiple APs to perform device tracking/authentication and pattern recognition in 5G or Internet of Things (IoT) networks.
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Zhang, Xu; Kamalizad, Amir; and Mirfakhraei, Khashayar, "DEVICE ORIENTATION DETECTION THROUGH SIGNAL FEATURES", Technical Disclosure Commons, (June 20, 2018)