Invention Grant
- Patent Title: Techniques for use in wideband time-of-arrival estimation
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Application No.: US14593864Application Date: 2015-01-09
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Publication No.: US09939521B2Publication Date: 2018-04-10
- Inventor: Jubin Jose , Xinzhou Wu , Thomas Joseph Richardson
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Thien T. Nguyen
- Main IPC: H04W52/54
- IPC: H04W52/54 ; G01S11/06 ; H04L27/26 ; H04W52/32 ; H04B17/27 ; H04W52/16

Abstract:
Provided are apparatus and methods for ranging between a plurality of wireless devices. An exemplary method includes, at a first wireless device, transmitting a primary portion symbol comprising a first packet and transmitting a secondary portion symbol. The secondary portion symbol is transmitted simultaneously at a lower transmit power than the primary portion symbol, and the secondary portion symbol comprises a second packet identical to the first packet. The primary portion symbol can be transmitted in a first channel having a substantially 20 MHZ bandwidth and the secondary portion can be transmitted in a second channel having a substantially 20 MHZ bandwidth. The first and second channels are substantially adjacent in frequency. After transmitting the primary portion symbol, for example, a high-throughput long-training-field symbol or a very-high-throughput long-training-field symbol can be repetitively transmitted. This exemplary method enhances time-of-arrival estimation accuracy, minimizes decoding bottlenecking, and maximizes wireless device range.
Public/Granted literature
- US20160202350A1 TECHNIQUES FOR USE IN WIDEBAND TIME-OF-ARRIVAL ESTIMATION Public/Granted day:2016-07-14
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