Method and system for identifying an illegal terminal in a cellular radio system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6377791
APP PUB NO 20010053684A1
SERIAL NO

09167460

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A cellular radio system comprises terminals (401, 402) arranged to transmit a specific message of a predetermined form at least two times (408, 409; 413, 414), so that there is a predetermined time-out between the two successive messages of said form. A message of said form, which is received from a terminal, is attached (503, 507, 509) to a code representing the terminal in order to identify an illegal terminal. Such a terminal is regarded as identified (513, 514) for which the time between the reception of the two successive messages of said form attached to the code representing the terminal is shorter than said time-out.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
NOKIA MOBILE PHONES LTD.ESPOO1014
NOKIA SOLUTIONS AND NETWORKS OYESPOO, FI1417

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pirila, Hannu Littoinen, FI 15 426

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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NOKIA CORPORATION (1)
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* Cited By Examiner

Patent Citation Ranking

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* Cited By Examiner