Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Reexamination Certificate
2005-09-06
2005-09-06
Chin, Vivian (Department: 2682)
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
C455S063100, C455S502000, C375S132000, C375S134000, C375S137000
Reexamination Certificate
active
06941110
ABSTRACT:
Techniques to avoid interference with a frequency hopping signal that are of a periodic or quasi-periodic nature that may operate in the same frequency band and proximity with other devices. For example, the frequency hopping signals may be transmitted by Bluetooth devices operating in the same frequency band as IEEE 802.11 WLAN devices. When a frequency hopping interfering signal is detected, sufficient knowledge of the frequency hopping sequence is derived without obtaining state of a frequency hop sequence from information carried in the frequency hopping signal. This knowledge is used to predict or determine when future transmissions of the frequency hopping signal will be present in a particular frequency channel of concern. Using knowledge of future hop frequencies, operating parameters of a communication device or network can be adjusted to mitigate interference with the frequency hopping signal only at times when the frequency hopping signal will be in a particular frequency channel or channels of interest.
REFERENCES:
patent: 5574979 (1996-11-01), West
patent: 6052406 (2000-04-01), Epstein et al.
patent: 6256478 (2001-07-01), Allen et al.
patent: 6349198 (2002-02-01), Carlson et al.
patent: 6359924 (2002-03-01), Kuhn et al.
patent: 6374082 (2002-04-01), Carlson
patent: 6549784 (2003-04-01), Kostic et al.
patent: 6859450 (2005-02-01), Mansfield
patent: 2002/0085622 (2002-07-01), Dhar et al.
patent: 2003/0108008 (2003-06-01), Agrawal et al.
Stephens et al, “A Self-Synchronizing Technique Providing Secure Messaging in Wireless Communication Systems,” 2003, Robert Gold Comm Systems, Inc.
Air Force Research Laboratory, “Success Story: Sensors Directorate Develops Countermeasures Against Frequency Agile Signals,” publication date unknown.
Diener Neil R.
Kloper David S.
Chin Vivian
Cognio, Inc.
Edell Shapiro & Finnan
Persino Raymond B.
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