Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-01-04
2011-01-04
Appiah, Charles N (Department: 2617)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S450000, C455S454000, C455S455000, C455S509000, C455S513000, C455S063100, C455S067110, C455S134000, C455S150100, C455S161100, C455S168100, C455S188100, C455S550100
Reexamination Certificate
active
07865191
ABSTRACT:
Wireless communication is carried out between devices. A highest frequency band is selected. When the selected frequency band includes an unused channel in which no disturbing wave is present, a maximum transmission rate at which a received field strength value exceeds a threshold value is determined. When the selected frequency band does not include an unused channel or one in which no disturbing wave is present or there is no transmission rate associated with the selected frequency band at which the received field strength value exceeds the threshold value, the next highest frequency band is successively selected and the above is repeated. When the maximum transmission rate is successfully determined, communication is initiated using the unused channel of the selected frequency band at the maximum transmission rate as a communication channel.
REFERENCES:
patent: 6366763 (2002-04-01), Ue et al.
patent: 7342973 (2008-03-01), Walker et al.
patent: 2001/0046213 (2001-11-01), Sakoda
patent: 2000-49663 (2000-02-01), None
patent: 2001-308830 (2001-11-01), None
patent: 2001-320326 (2001-11-01), None
Izumi Shinobu
Maeda Satoru
Nishimura Masaki
Appiah Charles N
Daniel, Jr. Willie J
Lerner David Littenberg Krumholz & Mentlik LLP
Sony Corporation
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