Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2009-05-05
2011-12-06
Appiah, Charles (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S522000, C455S412100, C455S069000, C455S452100, C455S067110, C455S067160, C455S070000, C455S452200
Reexamination Certificate
active
08073452
ABSTRACT:
The present invention provides methods and apparatuses for utilizing unused portions of an allocated frequency spectrum in a wireless communications system that broadcasts content to wireless stations. A first wireless station may communicate with a second wireless station on an idle broadcast channel while keeping the resulting interference level below an acceptable maximum limit at the other wireless stations. Using interference level information that are measured at the wireless stations, the wireless station can negotiate with the other wireless station on an establishment channel for subsequent communications on one or more broadcast channels. The wireless station may receive broadcast content on a time slice that corresponds to a broadcast channel and that is further processed by the wireless station. Otherwise, the wireless station can utilize the corresponding time to measure an interference level for the corresponding channel or to transmit or receive data to/from another wireless station.
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Kahola Mika
Kossi Jouni
Appiah Charles
Banner & Witcoff , Ltd.
Nokia Corporation
Peaches Randy
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