Method of protecting the integrity of messages sent in a...

Details Method of protecting the integrity of messages sent in a... Method of protecting the integrity of messages sent in a...

2003-08-11

2010-11-02

Appiah, Charles N (Department: 2617)

Telecommunications

Radiotelephone system

Security or fraud prevention

C455S411000, C455S435100, C455S422100, C380S270000

Reexamination Certificate

active

07826824

ABSTRACT:
The present invention provides a method of protecting the integrity of messages sent between a mobile terminal and a server radio access network controller in a mobile radio system, in which method a message sent is protected by a code calculated on sending and, in the event of a change of server radio access network controller from a source controller to a target controller, a message sent to the mobile terminal by the source controller, for forwarding to the mobile terminal information created in the target controller and then transferred by the target controller to the source controller, is protected by a code calculated in the target controller.

REFERENCES:
patent: 6587680 (2003-07-01), Ala-Laurila et al.
patent: 2002/0044552 (2002-04-01), Vialen et al.
patent: 2002/0066011 (2002-05-01), Vialen et al.
patent: 2002/0114469 (2002-08-01), Faccin et al.
patent: 2003/0100291 (2003-05-01), Krishnarajah et al.
patent: WO 0139534 (2001-05-01), None
patent: WO 0163954 (2001-08-01), None
ETSI: “Universal Mobile Telecommunications System (UMTS); 3G security; Security architecture (EGPP TS 33.102 version 5.0.0 Release 5)” ETSI TS 133 102 V5.0.0, Jun. 2002, pp. 1-62, XP002238243.
ETSI: “Universal Telecommunications System (UMTS); Radio Resource Control (RCC) protocol specification (3GPP TS 25.331 version 5.1.0 Release 5)”, ETSI TS 125 331 V5.1.0, Jun. 2002, pp. 204-219, XP002238244.

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