Invention Grant
- Patent Title: Wireless station ranging using channel state
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Application No.: US16812427Application Date: 2020-03-09
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Publication No.: US11265842B2Publication Date: 2022-03-01
- Inventor: Malcolm M. Smith , Xiaoqing Zhu , Jerome Henry
- Applicant: Cisco Technology, Inc.
- Applicant Address: US CA San Jose
- Assignee: Cisco Technology, Inc.
- Current Assignee: Cisco Technology, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Patterson + Sheridan, LLP
- Main IPC: H04W64/00
- IPC: H04W64/00 ; H04W24/10 ; H04B7/06 ; H04B7/08 ; G01S5/02

Abstract:
Techniques for determining a range between a wireless station (STA) and a wireless access point (AP) using channel state information are described. An AP determines channel state information corresponding to an STA. The AP determines, based on the channel state information, one or more fine timing measurement (FTM) parameters. A plurality of FTM messages are transmitted between the AP and the STA, based on the one or more FTM parameters. The STA is configured to determine an estimated range to the AP based on the plurality of FTM messages.
Public/Granted literature
- US20210282108A1 WIRELESS STATION RANGING USING CHANNEL STATE Public/Granted day:2021-09-09
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