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Fast authentication in 5G HetNet through SDN enabled weighted secure-context-information transfer

Future fifth generation (5G) wireless infrastructure tends to be highly heterogeneous, with dense small cells deployed overlay to cellular networks. Along with extremely high capacity and stringent latency requirements, security provisioning is becoming challenging in 5G Heterogeneous Networks (HetNets). Security key management could be difficult in small cells where users join and leave frequently, not to mention the limited capability of simplified access points (APs). On the other hand, frequent handovers and authentications in small cells also introduce unnecessary latency. Therefore in this article, we propose a software defined networking (SDN) enabled fast authentication scheme using weighted secure-context-information (SCI) transfer in order to improve authentication efficiency during handover and meet 5G latency requirement. The proposed algorithm is then applied in Neyman Pearson (NP) hypothesis test to authenticate users, which shows enhanced authentication accuracy and reduced latency in MATLAB simulations. Furthermore, we first analyze the SDN structure using priority queuing theory, and prove the performance of SDN enabled authentication handover.