Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2006-11-29
2011-10-25
Ton, Dang (Department: 2475)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S331000, C455S436000, C455S442000
Reexamination Certificate
active
08045534
ABSTRACT:
Provided is a method for switching a piconet device to a coordinator in a piconet. The method receives the latest order of precedence as the next PNC information from the current PNC. Thereafter, the method detects a P-CTA allocated to devices of the piconet using a beacon of a superframe received from the PNC. On failing to receive a beacon from the PNC, the method detects whether “beacon non-receipt” indicating information that is transmitted between piconet devices during the detected P-CTA. If the “beacon non-receipt” indicating information is not detected, the method does not perform a PNC appropriation operation. If the “beacon non-receipt” indicating information is detected, the method determines that the PNC has left the piconet without performing a normal PNC handover procedure and thus performs a PNC appropriation operation according to the order of precedence information.
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Kim Jae-Young
Kwak Byung-Jae
Song Nah-Oak
Electronics and Telecommunications Research Institute
Kaur Pamit
Staas & Halsey , LLP
Ton Dang
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