Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-08-09
2005-08-09
Beamer, Temica M. (Department: 2681)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S450000, C455S452100, C455S501000, C455S502000
Reexamination Certificate
active
06928286
ABSTRACT:
The wireless communications system synchronizes the current frequency and permits communication under the DECT protocol between a mobile unit and a fixed base station with rapid and frequent changes in frequency, as defined for example in the ADCT protocol. For this purpose a key is derived from the identification code transmitted by the base station. Lists containing random or pseudo-random frequency sequences are specified, and one of the lists is selected depending on the key transmitted, and the corresponding frequencies are used for the frequency change.
REFERENCES:
patent: 4476566 (1984-10-01), Dent
patent: 5386435 (1995-01-01), Cooper et al.
patent: 5394433 (1995-02-01), Bantz et al.
patent: 5425049 (1995-06-01), Dent
patent: 5875186 (1999-02-01), Belanger et al.
patent: 5978366 (1999-11-01), Massingill et al.
patent: 5978674 (1999-11-01), Jackson et al.
patent: 6031864 (2000-02-01), Bauchot et al.
patent: 6680920 (2004-01-01), Wan
patent: 44 32 926 (1996-03-01), None
patent: 0 650 274 (1995-04-01), None
patent: 0 650 304 (1995-04-01), None
“A Class of Frequency Hop Codes with Nearly Ideal Characteristics for Use in Multiple-Access Spread-Spectrum Communications and Radar and Sonar Systems” (Maric et al.), IEEE Transactions on Communications, No. 9, New York, 1992, pp. 1442-1447.
Beamer Temica M.
Greenberg Laurence A.
Infineon - Technologies AG
Locher Ralph E.
Stemer Werner H.
LandOfFree
Method of frequency synchronization in a wireless... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of frequency synchronization in a wireless..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of frequency synchronization in a wireless... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3521647