Efficient communication channel survey

Details Efficient communication channel survey Efficient communication channel survey

2011-08-09

2011-08-09

Cai, Wayne (Department: 2617)

Multiplex communications

Communication over free space

Having a plurality of contiguous regions served by...

C370S342000, C455S423000, C455S438000, C310S328000, C701S213000

Reexamination Certificate

active

07995547

ABSTRACT:
A system and method are described for repeatedly and efficiently performing a wireless communication channel survey to determine whether comparable communications devices exist, which frequencies are in use, and the identities of the comparable communications devices. A beacon data table stores received beacon data which is used to predict beacon arrival times, thereby allowing a receiver to be tuned away from an active data communications channel for a shorter dwell time than a beacon period. A further efficiency can be gained if beacon generators cooperatively stagger their beacon times according to one or more measurable characteristics of the beacon generator, e.g. the operating channel number and the SSID.

REFERENCES:
patent: 6088591 (2000-07-01), Trompower et al.
patent: 2005/0171720 (2005-08-01), Olson et al.

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