Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2004-07-29
2008-11-11
Le, Danh C (Department: 2617)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S347000, C370S321000, C375S316000, C455S069000
Reexamination Certificate
active
07450549
ABSTRACT:
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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Czaja Stanislaw
Qian Feng
Boling, Esq. William C.
Jaquez & Associates
Jaquez, Esq. Martin J.
Le Danh C
VIA Telecom Co. Ltd.
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