RADIO FREQUENCY IDENTIFICATION RANGING USING PHASE-BASED RANGING WITH CHANNEL HOPPING

Abstract

Systems and techniques are provided for wireless communications. For example, a process can include determining a frequency hopping configuration corresponding to a plurality of frequency hops between a plurality of carrier frequencies, and transmitting a continuous carrier signal to a Radio Frequency Identification (RFID) tag, where the continuous carrier signal comprises a pilot tone transmitted on each respective carrier frequency of the plurality of carrier frequencies. A process can include receiving, from the RFID tag, a continuous backscatter signal including a corresponding reflection of the pilot tone transmitted on each respective carrier frequency of the plurality of carrier frequencies. A process can include determining an estimated distance from a wireless communication device to the RFID tag based on a plurality of measurements obtained from the continuous backscatter signal.

CPC Classifications