Invention Application
- Patent Title: Secure Multicast/Broadcast Ranging
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Application No.: US16674993Application Date: 2019-11-05
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Publication No.: US20200150261A1Publication Date: 2020-05-14
- Inventor: Ayman Naguib , Robert Brumley , Robert Golshan
- Applicant: Apple Inc.
- Main IPC: G01S13/76
- IPC: G01S13/76

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.
Public/Granted literature
- US11493621B2 Secure multicast/broadcast ranging Public/Granted day:2022-11-08
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