公开(公告)号：US20220390585A1

公开(公告)日：2022-12-08

申请号：US17821251

申请日：2022-08-22

Applicant: Apple Inc.

Inventor： Ayman NAGUIB ,  Robert BRUMLEY ,  Robert GOLSHAN

IPC: G01S13/76 ,  H04W74/06

Abstract: Methods performed by a first device. The methods include transmitting a first ranging poll to a plurality of second devices, receiving a polling response message from each of at least a first subset of the second devices, determining a propagation delay for each of the received polling response messages and determining a distance to each of the first subset of the second devices based on at least the respective propagation delays. The methods further include receiving a ranging poll from a second device, wherein the ranging poll is one of a multicast transmission or a broadcast transmission, determining a type of response to be transmitted to the second device based on at least a capability of the first device and transmitting a response of the determined type to the second device.