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In this paper, we propose a secure scheme, named the Digital-Signature-based Authentication Method (DiSAM for short), in which two authentication methods, called Homogeneous Network Authentication (HoNA for short) and Untrusted Network Authentication (UNA for short), are proposed to enhance the security of the LTE-A on F-PMIPv6 handover. In the HoNA, when UE enters a network, it obtains its representative...
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