Invention Grant
- Patent Title: Broadcast time-of-departure (TOD) frame format
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Application No.: US15080337Application Date: 2016-03-24
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Publication No.: US09867004B2Publication Date: 2018-01-09
- Inventor: Carlos Horacio Aldana , Ning Zhang , James Simon Cho , Xiaoxin Zhang
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Kilpatrick Townsend & Stockton, LLP
- Main IPC: H04W24/00
- IPC: H04W24/00 ; H04W4/02 ; H04W56/00 ; H04L27/26 ; G01S5/14

Abstract:
Disclosed herein are techniques for range measurement between one or more wireless stations (STAs) and a first access point (AP). In various embodiments, the first AP may synchronize a clock of the first AP with clocks of one or more synchronized APs. The first AP may perform a synchronization session with the one or more STAs. The first AP may also transmit one or more Broadcast time-of-departure (TOD) frames to the one or more STAs. Each of the one or more Broadcast TOD frames may include a time of departure of a Broadcast TOD frame from the first AP. A second AP and a third AP of the one or more synchronized APs may also transmit one or more Broadcast TOD frames to the one or more STAs for range and/or position determination.
Public/Granted literature
- US20170188191A1 BROADCAST TIME-OF-DEPARTURE (TOD) FRAME FORMAT Public/Granted day:2017-06-29
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