A Survey of Adaptive Gateway Discovery Mechanisms in Heterogeneous Networks
Rafi U. Zaman, Khaleel Ur Rahman Khan, A. Venugopal Reddy · International Journal of Computer Network and Information Security · 2013
The communication range of devices within a mobile ad hoc network is inherently restricted.One way of enhancing the communication range of a mobile ad hoc network, is to interconnect it to a wired network like the internet, thus forming a heterogeneous wired cum wireless network.This interconnection also enables mobile nodes to access internet services, and is achieved through gateways.Mobile nodes in the ad hoc network need to discover and register with a gateway in order to obtain Internet connectivity.Gateway discovery mechanisms called proactive, reactive and hybrid exist to enable mobile nodes to register with internet gateways.In the recent times, few optimizations have been proposed to the existing gateway discovery mechanisms in order to make gateway discovery by mobile nodes efficient.In this paper, we present a detailed survey of the state of the art in gateway discovery and selection mechanisms.