Arranging data ciphering in a wireless telecommunication system
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United States of America Patent
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Oct 14, 2014
Grant Date -
Nov 29, 2012
app pub date -
Aug 9, 2012
filing date -
Jun 30, 2000
priority date (Note) -
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Abstract
Arranging data ciphering in a telecommunication system comprising at least one wireless terminal, a wireless local area network and a public land mobile network. At least one first ciphering key according to the mobile network is calculated in the mobile network and in the terminal for a terminal identifier using a specific secret key for the identifier. Data transmission between the mobile network and the terminal is carried out through the wireless local area network. A second ciphering key is calculated in the terminal and in the mobile network using said at least one first ciphering key. The second ciphering key is sent from the mobile network to the wireless local area network. The data between the terminal and the network is ciphered using said second ciphering key.
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