Multiplex communications – Channel assignment techniques – Using a separate control line or bus for access control
Reexamination Certificate
2011-03-01
2011-03-01
Trost, IV, William (Department: 2472)
Multiplex communications
Channel assignment techniques
Using a separate control line or bus for access control
C370S310000, C370S345000, C370S347000, C370S348000, C370S431000, C370S439000
Reexamination Certificate
active
07899074
ABSTRACT:
Provided is an apparatus and method for controlling multi-channel access in USN-based MAC. The multi-channel access control apparatus includes a channel scanner, a control channel preoccupier, and an available channel exchanger. The channel scanner scans at least one or more available channels among the N data channels in a Tx sensor node. The control channel preoccupier preoccupies, in the Tx sensor node, the control channel through control channel sensing and back-off and broadcasts a preamble on the control channel periodically. The available channel exchanger detects, in an Rx sensor node, the available channels available to the Tx sensor node on the basis of the received preamble, selects a channel available to the Rx sensor node among the detected available channels, and transmits information about the selected channel to the Tx sensor node.
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Kim Byung Chul
Kim Nae-Soo
Kim Se Han
Lee Jae Yong
Park Tae Joon
Electronics and Telecommunications Research Institute
Jiang Charles C
Staas & Halsey , LLP
Trost, IV William
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