Multiplex communications – Communication over free space – Combining or distributing information via frequency channels
Reexamination Certificate
2006-09-05
2006-09-05
Rao, Seema S. (Department: 2616)
Multiplex communications
Communication over free space
Combining or distributing information via frequency channels
C370S480000, C375S132000
Reexamination Certificate
active
07103030
ABSTRACT:
A technique for controlling the frequency allocation in the hop sequence of a frequency hopping digital communications system is presented. The hop sequence is initially formed such that consecutive channels are likely to differ substantially in frequency. Therefore, channel substitution commands can be transmitted twice on consecutive hops without acknowledgement, inasmuch as the likelihood of a broadband noise source blocking consecutive channels is reduced. The number of channels identified as requiring substitution in the hop sequence is monitored, such that a hop sequence repair operation or communications link termination can be implemented if channel substitution data traffic becomes too great.
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GB Search Report.
GB Search Reports, Jul. 9, 2003.
Moore Michael J.
Pillsbury Winthrop Shaw & Pittman LLP
Rao Seema S.
VTech Communications Ltd.
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