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    ASSESSMENT OF LTE MAC LAYER UNDER DDOS ATTACKS
    (2022-01) Mohamed Ali, Samatar
    Long-term Evolution (LTE) is a rapidly changing and evolving cellular network technology that allows users to connect to the Internet via mobile phones and other mobile devices. In the cellular LTE network, it is important to manage network traffic and to distribute network resources fairly and efficiently between users. In addition, providing security on the LTE network is an important factor in uninterrupted service quality. Network bandwidth is used uselessly by distributed denial-of-service attacks on cellular networks, mobile devices using the network cannot receive service, and network disconnections cause the network to be disabled. Scheduling algorithms used in the MAC of the cellular LTE network make an important contribution to network security by performing functions such as data transfer and controlling the cellular radio source. The performance of MAC scheduling algorithms developed for cellular LTE networks is determined by performance parameters such as end-to-end throughput, end-to-end delay, fairness index, and packet delivery rate (PDF). In this thesis, the performance of MAC scheduling algorithms maximum throughput (MT), blind equal throughput (BET), round-robin (RR), throughput to average (TTA), and proportional fair (PF) running on the LTE MAC layer under DDoS attacks using the NS-3 network simulation platform is compared to end-to-end throughput, end-to-end delay, fairness index, and PDF parameters. According to the experimental results obtained, the TTA algorithm has performed better in ensuring network security than other algorithms