Blockchain-Enabled Authentication Handover With Efficient Privacy Protection in SDN-Based 5G Networks

5G mobile networks provide additional benefits in terms of lower latency, higher data rates, and more coverage, comparison to 4G networks, they are also coming close standardization. For example, has a new level transfer processing speed that assures users not disconnected when move from one cell another; thus, supporting faster connection. However, it comes with its own technical challenges relating resource management, authentication handover user privacy protection. In 5G, the frequent displacement among cells as result repeated handovers often lead delay, contradicting objectives. this paper, we propose approach utilizes blockchain software defined networking (SDN) techniques remove re-authentication heterogeneous cells. The proposed is designed assure low appropriate for network which can be replaced least delay using their public private keys provided by devised component while protecting privacy. our between Proof-of-Work (POW)-based network-based models, was shown less than 1ms. Also, demonstrated signaling overhead energy consumption compared peer models.