The document discusses distributed mobility management (DMM) approaches for 5G networks. It summarizes several DMM techniques proposed in previous research, including client-based and network-based DMM, and hybrid DMM approaches. The document motivates DMM by noting increasing mobile data traffic and limitations of centralized mobility management, such as signaling overhead and scalability issues. DMM is presented as a more effective solution that provides user continuity, reliable handovers, and more cost-effective data forwarding compared to centralized approaches. The author proposes to analyze and evaluate different DMM techniques through simulation to identify the best solutions for 5G.