In next generation of wireless networks, different technologies belonging to one or more
operators should be integrated to form a heterogeneous environment based on an IP core
network infrastructure. This ensures user mobility and service continuity by maintaining
connections when switching between various technologies and it introduces new resources
and possibilities for applications. In this context, an automatic interface selection based on
instantaneous and practical constraints and user preferences (Quality of Service (QoS) …

ABSTRACT A Heterogeneous Network abbreviated as HetNet is a mix of macrocells,
picocells, femtocells, remote radio heads and relays. A HetNet is a network consisting of
various wireless access technologies and functionalities. The Next Generation mobility
technique called the 4G deals with the multi-access heterogeneous wireless networks which
provide seamless connectivity of multimedia services at a higher data rate to the end users.
There are various research challenges like self organization, backhauling, handover and …