Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2005-09-06
2009-10-13
Sam, Phirin (Department: 2419)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C455S434000
Reexamination Certificate
active
07602757
ABSTRACT:
Channel scanning for wireless networks, such as Wireless Local Area Networks (WLANs), generally provides a wireless station with the information on the available WLAN resources, such as the frequency band and the maximum transmission power. The present invention provides safe and fast domain-aware channel scanning, enabling a wireless station to comply with applicable local regulations, in spite of the possibility of domain changes, with short channel-scanning time. Fast channel scanning is accomplished by active channel scanning if valid domain information is available and there is no possibility of domain change. Also, domain-independent channels, if any, are first scanned using active scan to get domain information faster.
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Gao Xia
Jeong Moo Ryong
Watanabe Fujio
Wu Gang
Haynes and Boone, LLp
NTT DOCOMO Inc.
Sam Phirin
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