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5G mobile networks provide additional benefits in terms of lower latency, higher data rates, and more coverage, in comparison to 4G networks, and they are also coming close to standardization. For example, 5G has a new level of data transfer and processing speed that assures users are not disconnected when they move from one cell to another; thus, supporting faster connection. However, 5G comes with its own technical challenges, such as those relating to authentication handover and user privacy protection. In 5G, for example, the frequent displacement of the users among the cells as a result of repeated authentication handovers often lead to a delay, contradicting the 5G objectives. Using inefficient authentication handover could also cause performance degradation among heterogeneous 5G cells, and increases the possibility of occurring user privacy and security issues. In this paper, we propose a new …