Patent ID: 11856542

Abstract:
Systems and methods of performing location tracking with ultra wideband (UWB) are provided. The system includes a network formed by base stations and tags. In operation, the system configures multiple Time Division Multiple Access (TDMA) slots within a predetermined time frame. The TDMA slots include a clock calibration packet (CCP) slot, personal area network (PAN) identifier request and response slots, and TDMA tag slots. In the CCP slot, clock synchronization is performed among the base stations and the tags. In the PAN identifier request and response slots, the base stations receive reservation requests from the tags, and send correspond reservation responses. In each TDMA tag slot, the base stations listen to ranging requests from each tag, and send corresponding ranging responses with corresponding timestamps indicating the corresponding TDMA tag slot for each tag. Each tag only wakes up during the corresponding TDMA tag slot, thus achieving low power consumption.