Telecommunications – Transmitter and receiver at separate stations – Distortion – noise – or other interference prevention,...
Reexamination Certificate
2009-02-18
2011-11-29
Donovan, Lincoln (Department: 2816)
Telecommunications
Transmitter and receiver at separate stations
Distortion, noise, or other interference prevention,...
Reexamination Certificate
active
08068786
ABSTRACT:
A method for identifying time of flight interference in a wireless communication network is provided. The method includes detecting interference during a first uplink sub-frame at an interference destination base station, and transmitting a time of flight interference source detection request to a gateway, where the time of flight interference source detection request comprises a time of flight interference period. The method also includes determining one or more base stations in the vicinity of the interference destination base station, where the one or more base stations in the vicinity of the interference destination base station operate at a same frequency as the interference destination base station. The method further includes instructing the one or more base stations in the vicinity of the interference destination base station to re-transmit a preamble at least once in a downlink sub-frame, decoding a first preamble of a first interference source base station at the interference destination base station during a second uplink sub-frame, and identifying the first interference source base station based on the first preamble.
REFERENCES:
patent: 6377636 (2002-04-01), Paulraj et al.
patent: 6377819 (2002-04-01), Gesbert et al.
patent: 6643281 (2003-11-01), Ryan
patent: 7116632 (2006-10-01), Alapuranen
Dinan Esmail Hejazi
Jung Jong-hak
Pawar Hemanth Balaji
Sitaram Krishna D.
Tiwari Swati
Chen Sibin
Clear Wireless LLC
Donovan Lincoln
O'Brien Jones PLLC
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