Fast Re-Authentication Scheme for HeNB

Home eNodeB (HeNB) is a small cellular base station, typically designed for use in a home or small business. Deployed in untrusted environments, HeNB must be authenticated when it accesses to operator's core network. 3GPP has presented a method that EAP-AKA runs within IKEv2 between HeNB and security gateway for mutual authentication of HeNB and core network. This paper proposes a fast re-authentication scheme based on 3GPP standard. The proposed procedures reduce significantly the authentication overhand and improve the authentication speed compared with the initial authentication, without compromising the provided security services. Moreover, the proposed method does not modify the infrastructure in 3GPP and can be applied easily to the HeNB system. A detailed analysis of security is made by using AVISPA. In addition, an analysis of energy cost is carried out that compares the energy consumption induced by re-authentication and initial authentication. Finally, an analysis of communication cost analysis is provided that estimates the cost improvement of proposed re-authenitication over the initial authentication procedure.