A Comprehensive Review of Routing Protocols in Heterogeneous Wireless Networks

In recent years, with the evolution of mobile ad hoc networks the popularity of wireless communications systems can be seen almost everywhere in the form of cellular networks, WLANs and WPANS. Furthermore, even small portable devices are fully equipped with various communication interfaces for building a heterogeneous environment in terms of access technologies. The future heterogeneous environments integrate various wireless access technologies such as WLANs, WMANs and WWANs, with in an individual network architectures. It is envisioned that the next generation wireless systems would provide convergence of various wireless network technologies so as to have global connectivity .In this paper we present a review of the various routing protocols present in the Mobile Adhoc Networks (MANETs) and the review of different wireless access integration technologies and their comparisons.