Cryptography – Communication system using cryptography – Wireless communication
Reexamination Certificate
2007-06-19
2007-06-19
Sheikh, Ayaz (Department: 2131)
Cryptography
Communication system using cryptography
Wireless communication
C380S277000, C455S410000, C455S411000
Reexamination Certificate
active
10248731
ABSTRACT:
A wireless device first successfully completes an Inter-RAT procedure, which is either an Inter-RAT handover, Inter-RAT cell reselection or Inter-RAT cell change order from UTRAN procedure. The wireless device then determines if a USIM is present. If the USIM is present, the wireless device determines if a new security key set was received and unused for ciphering and integrity functions during a current RRC connection. If a new key set was present and unused, the wireless device stores a value of zero into the USIM as a security START value for the CN domain associated with the RRC connection.
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Birch & Stewart Kolasch & Birch, LLP
Cervone Michael
Innovative Sonic Limited
Sheikh Ayaz
LandOfFree
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