H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 7/26 (2006.01) H04Q 7/36 (2006.01) H04Q 7/38 (2006.01)
Patent
CA 2063447
Radio frequency based cellular telecommunication systems often require a subscriber to maintain a proprietary identifier or serial number which is transmitted to a fixed network communi- cation unit to verify the authenticity of the subscriber. Unauthorized detection of these proprietary ID's is substantially decreased by this invention. This invention describes an enciphering method and call sequencing method which when combined, provides substantial protection for the sub- scriber against unauthorized detection of their proprietary identifiers.
Flanders Mary Beth
Puhl Larry C.
Gowling Lafleur Henderson Llp
Motorola Inc.
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