Secure distributed handover signaling

Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...

Reexamination Certificate

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C455S436000, C455S437000, C370S310000

Reexamination Certificate

active

07864731

ABSTRACT:
Provided are apparatuses and methods for providing security measures for a handover execution procedure in a communication network. In one example, the handover procedure is initiated by more than one base station. In another example, a base station may not launch a Denial or Service (DoS) attack towards other base stations or towards a core network using handover signaling messages. For example, a user device may send at least one encryption parameter, such as a Nonce associated with the user device to a source base station. Handover of the user device from the source base station to a target base station may be accomplished based on the at least one encryption parameter to avoid the DoS attack.

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Ulrike Meyer and Susanne Wetzel, “On the Impact of GSM Encryption and Man-In-The-Middle Attacks on the Security of Interoperating GSM/UMTS Networks”, Personal, Indoor and Mobile Radio Communications, 2004; 15th IEEE International Symposium on; vol. 4, Sep. 5-8, 2004, pp. 2876-2883.
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PCT Notification Concerning Transmittal of International Preliminary Report on Patentability (Chapter I of the Patent Cooperation Treaty), International Application No. PCT/IB2006/003793, mailed Jul. 17, 2008, 8 pages.

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