Sajjad Ahmad Khan received his Ph.D. degree in Computer Engineering from Kocaeli University, Turkey, in 2020. Currently, he is serving as a research associate at Istanbul Technical University (ITU), Istanbul, Turkey. He is a highly passionate and motivated researcher and has published numerous publications in SCI journals. He is also an active reviewer for several international journals. His research includes Handover and Mobility Management in 5G and 6G, Internet of Things (IoT), Vehicle to Vehicle (V2V) Communications, 5G and Beyond Heterogeneous Networks (HetNets), Load Balancing and Radio Resource Management (RRM), Cooperative Communications, Security and Cryptography, OFDMA, SDMA, massive MIMO, and mmWave, etc.