Invention Grant
- Patent Title: Secure multicast/broadcast ranging
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Application No.: US17821251Application Date: 2022-08-22
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Publication No.: US11879965B2Publication Date: 2024-01-23
- Inventor: Ayman Naguib , Robert Brumley , Robert Golshan
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fay Kaplun & Marcin, LLP
- The original application number of the division: US16674993 2019.11.05
- Main IPC: H04W74/06
- IPC: H04W74/06 ; 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
- US20220390585A1 Secure Multicast/Broadcast Ranging Public/Granted day:2022-12-08
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