Telecommunications – Transmitter and receiver at separate stations – Plural transmitters or receivers
Reexamination Certificate
2005-03-15
2008-10-14
Lee, John J. (Department: 2618)
Telecommunications
Transmitter and receiver at separate stations
Plural transmitters or receivers
C455S069000, C455S063100, C455S126000
Reexamination Certificate
active
07437176
ABSTRACT:
A method and system are disclosed for reducing pilot pollution in a wireless communication system by systematically (i) identifying areas of sector overlap and (ii) for each area, adjusting power allocation in one or more of the overlapping sectors so as to create a dominant sector and to reduce the total noise from other sectors. A preferred embodiment of the invention involves collecting RF performance data, filtering the data to focus on areas having threshold low forward link data rate, further filtering the data to focus on areas in which the low forward link data rate is likely the result of pilot pollution, selecting a geographic region in which to make a sector power adjustment, and making a sector power adjustment in the selected region in an effort to reduce pilot pollution and increase forward link data rate. The invention is particularly advantageous in a hybrid EV-DO/1xRTT system.
REFERENCES:
patent: 6678257 (2004-01-01), Vijayan et al.
patent: 2003/0134655 (2003-07-01), Chen et al.
patent: 2004/0203809 (2004-10-01), Au et al.
patent: 2006/0209721 (2006-09-01), Mese et al.
Apte Abhijit V.
Chalishazar Nandish M.
Ribas Hector M.
Sigg Jason P.
Yew Meng Y.
Lee John J.
Sprint Spectrum L.P.
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