Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2007-05-22
2007-05-22
Vo, Nguyen T. (Department: 2618)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C455S041200, C455S552100
Reexamination Certificate
active
10674499
ABSTRACT:
In a wireless LAN communication system, a communication mode is automatically switched between an infrastructure mode and an ad-hoc mode. Communication between two stations is started in the infrastructure mode. Packets transmitted in an infrastructure network are monitors to detect a packet transmitted to an access point and addressed, as a final destination, to one's own station or a destination station. If such a packet is detected, it is determined that a transmitting or source station is in a state that allows an ad-hoc communication. A channel searcher of the access point searches for available channels of an ad-hoc network. A switching controller selects one of the available channels and transmits information indicating the selected channel to the source and destination stations. In response to receiving the information indicating the selected channel, the source and destination stations starts direct communication using the selected channel of the ad-hoc network. The selection of the channel may be performed by a station. Associated data may be stored in a temporary data storage unit.
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Japanese Office Action dated Dec. 14, 2006 with English translations of pertinent portions.
Hori Masato
Kobayashi Yoshikazu
NEC Infrontia Corporation
Vo Nguyen T.
Whitham Curtis Christofferson & Cook PC
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