Mobility management issues in heterogeneous mobile wireless networks

Future wireless network will have a mix of different radio access technologies co-existing. Individual wireless access networks show limitations and by having them co-exist operators have tried to minimize the limitations. However, the integration of heterogeneous networks poses many challenges such as adding complexity to the processes of selecting the optimal radio access technology, seamless vertical handover between heterogeneous technologies and adaptation of multimedia transmission between heterogeneous technologies. This paper aims to provide an insight into these mobility management issues in heterogeneous networks, present proposed solutions and their drawbacks, and focuses on the enhancements required to provide a better quality of user experience.