SYSTEM AND METHOD OF OPTIMIZING WIRELESS DEVICE RANGING

Provided is a method of performing ranging on a second device by a first device. According to one embodiment, the method includes: receiving, by a first device, a plurality of timestamps including a first timestamp and a second timestamp; and determining, by the first device, a range (R) with respec...

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Bibliographic Details
Main Author LINDSKOG ERIK DAVID
Format Patent
LanguageEnglish
Korean
Published 29.03.2022
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Summary:Provided is a method of performing ranging on a second device by a first device. According to one embodiment, the method includes: receiving, by a first device, a plurality of timestamps including a first timestamp and a second timestamp; and determining, by the first device, a range (R) with respect to a second device by calculating an average time-of-flight (TOF) of a first wireless signal and a second wireless signal based on the first timestamp and the second timestamp. The first timestamp represents a time-of-arrival (TOA) of the first wireless signal that reaches the second device, and a maximum value possible in the first timestamp is T_max1. The second timestamp represents a time-of-departure (TOD) of a second wireless signal that starts from the second device, and a maximum value possible in the second timestamp is T_max2, which is larger than the T_max1. 제1 디바이스에 의한, 제2 디바이스에 대한 레인징을 수행하는 방법이 제공된다. 일 실시형태에 따르면, 방법은, 제1 디바이스에 의한, 제1 타임스탬프 및 제2 타임스탬프를 포함하는 복수의 타임스탬프를 수신하는 단계, 및 제1 디바이스에 의한, 제1 타임스탬프 및 제2 타임스탬프에 기반하여 제1 무선 신호 및 제2 무선 신호의 평균 비행 시간(TOF)을 계산함으로써 제2 디바이스에 대한 범위(R)를 결정하는 단계를 포함한다. 제1 타임스탬프는 제2 디바이스에 도달하는 제1 무선 신호의 도착 시간(TOA: time-of-arrival)를 나타내며, 제1 타임스탬프의 가능한 최대 값은 Tmax1이다. 제2 타임스탬프는 제2 디바이스로부터 출발하는 제2 무선 신호의 출발 시간(TOD: time-of-departure)을 나타내며, 제2 타임스탬프의 가능한 최대 값은 Tmax2이고, Tmax1보다 더 크다.
Bibliography:Application Number: KR20210123202