Network Layer Mobility Management Protocols in Heterogeneous Environment

In heterogeneous environment, mobility management represents the basis for providing seamless connectivity to users roaming between various access networks. Several network layer mobility management protocols have been and still are being developed. Each solution provides a specific functionality and requires operations of particular network entities. This paper surveys key protocols for providing network layer mobility support, possibilities of their improvements, as well as functionality achieved by combining them. Ključne reči: Handover, HetNets, mobile IP, mobility management, network layer.