Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2007-01-04
2010-12-28
Chang, Kent (Department: 2617)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S338000
Reexamination Certificate
active
07860055
ABSTRACT:
A wireless channel determination/selection method for use in an access point device configuring a wireless LAN system with a terminal device is disclosed. The method includes: a first step of selecting sequentially a wireless channel available for use, detecting a reception signal level for each of the wireless channels, determining whether a wireless LAN signal is included, and receiving data transmission/reception state notice information that is inserted in a beacon frame provided by another access point device to indicate a state of data transmission/reception at the another access point device; a second step of detecting, from the received data transmission/reception state notice information, a data transmission/reception level at the another access point device for each of the wireless channels; and a third step of determining and selecting any of the wireless channels considered optimum for communications.
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Chang Kent
Eisner Ronald
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sony Corporation
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