公开(公告)号：US20200092191A1

公开(公告)日：2020-03-19

申请号：US16133943

申请日：2018-09-18

Applicant: Apple Inc.

Inventor： Alejandro J. Marquez ,  Shang-Te Yang ,  Mohit Narang ,  Indranil S. Sen ,  Joachim S. Hammerschmidt ,  Hung Kwan Oscar Au ,  Dineshan Poopalaratnam

IPC: H04L12/26 ,  H04W24/08 ,  H04W72/04

Abstract: Methods for a data-less ranging procedure may include initiating a ranging procedure via a polling message transmitted at a first time and receiving response messages at second and third times. The time intervals between the first and second time and the second and third times may be pre-defined. A time of flight may be calculated based on the pre-defined time intervals and the first, second, and third times.