Pilot signal enhancements for a wireless communication system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 8208447
APP PUB NO 20080205374A1
SERIAL NO

12151017

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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In a method and apparatus suitable to convey timely information for facilitating accurate reception of transmitted data, a pilot signal is modulated to convey information. The information may facilitate efficient interpretation of an associated traffic signal. Modulation of a pilot signal frame may be limited to ensure early detection, and/or to minimize impairment of pilot functionality. In one embodiment, a Secondary Pilot Channel (SPICH) is transmitted at one of several selectable power levels to boost effectiveness of a phase reference, and is modulated to indicate the selected level. Such timely information enables prompt optimal combining of the SPICH with a primary Pilot Channel (PICH), and/or permits processing efficiencies for an associated traffic channel. Pilot signal frames may be transmitted at a predetermined level during a detection preamble portion of a frame to ensure accurate and early detection, and at a more optimal level thereafter.

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Patent Owner(s)

Patent OwnerAddress
APPLE INCONE APPLE PARK WAY CUPERTINO CA 95014

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Czaja, Stanislaw Cardiff, US 57 1460
Qian, Feng Buffalo Grove, US 147 1385

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