Invention Application
- Patent Title: IEEE 802.11 ENHANCEMENTS FOR HIGH EFFICIENCY POSITIONING
- Patent Title (中): IEEE 802.11高效率定位的增强
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Application No.: US14837775Application Date: 2015-08-27
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Publication No.: US20160081054A1Publication Date: 2016-03-17
- Inventor: Xiaoxin Zhang , Ning Zhang , Carlos Horacio Aldana , Youhan Kim , Praveen Dua , Meghna Agrawal
- Applicant: QUALCOMM Incorporated
- Main IPC: H04W64/00
- IPC: H04W64/00 ; H04L5/00 ; H04W52/02 ; H04W24/10 ; H04L12/841
Abstract:
A ranging operation between a first wireless device and a second wireless may be performed by: sending, to the second wireless device, a data frame including a request for the second wireless device to report its actual SIFS duration to the first wireless device; determining a time of departure (TOD) of the data frame; receiving, from the second wireless device, a response frame including SIFS information indicative of the actual SIFS duration of the second wireless device; determining a time of arrival (TOA) of the response frame; and determining a round trip time (RTT) of the data frame and the response frame using the TOD of the data frame, the TOA of the response frame, and the actual SIFS duration of the second wireless device.
Public/Granted literature
- US09907044B2 IEEE 802.11 enhancements for high efficiency positioning Public/Granted day:2018-02-27
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