Abstract
A seamless and secure handover is always one of the important design goals of the cellular networks. The handover scheme of 4G Long Term Evolution (LTE) wireless networks is complex due to the presence of two possible different types of base stations. In LTE communication systems, a normal base station is referred to as an eNodeB (eNB). What increases the level of complexity of the system is the fact that the other kind of base stations, namely, Home eNodeB (HeNB), cannot directly communicate with eNB. In the LTE networks, the handover scenarios involving a HeNB could result in a complicated handover procedure. Besides, since key chains have been used in the handover processes, it is found to be lack of backward security. Therefore, in order to handle the handover involving a HeNB efficiently with security provisioning, in this paper, a proxy signature-based handover scheme is proposed. The proposed scheme works based on the Elliptic Curve Cryptography (ECC) algorithm, which makes the computational cost of the handover process smaller compared to other handover schemes.
Highlights
With rapid development of wireless technology, more and more people have been able to be contacted in any place and at any time by wireless communication networks
Responsible for the overall control as the backbone network, the Evolved Packet Core (EPC) comprises of several main logic elements, namely, the Packet Data Network (PDN) Gateway (PDN-GW), the Serving Gateway (S-GW), the Mobility Management Entity (MME), Evolved Serving Mobile Location Centre (E-SMLC), the Home Subscriber Server (HSS), the Policy Control and Charging Rules Function (PCRF) and the Gateway Mobile Location Centre (GMLC)
Since each of other two handover processes needs to go through the steps in the normal handover process to achieve a mutual authentication first followed by additional steps, the referred base station could be the eNB or Home eNodeB (HeNB) connected to the same MME and the eNB or HeNB connected to different MME
Summary
With rapid development of wireless technology, more and more people have been able to be contacted in any place and at any time by wireless communication networks. By the proxy signature approach, the HSS, AAA server or current base station can issue its proxy delegation to the UEs for the authentication, which can effectively lower the level of complexity of the entire network. It only has a one-directional authentication performed, which means that an access point (AP) can authenticate the mobile nodes but the mobile nodes cannot verify the authenticity of the AP. The scheme proposed in [11] enables the eNB and UE to mutually authenticate each other by the proxy signature approach to achieve a good forward/backward security for the network.
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