16-05-2012, 04:58 PM
mobile Ad Hoc Networks
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INTRODUCTION
OBJECTIVE
Ad Hoc Networks represent complex distributed systems that comprise wireless mobile nodes that can freely and dynamically self-organize into arbitrary and temporary, ‘‘ad-hoc’’ network topologies, allowing people and devices to seamlessly inter-network in areas with no pre-existing communication infrastructure, e.g., disaster recovery environments. Here a brief overview of what is Ad Hoc Networks and how they work is provided. Then a look at the advantages of Ad Hoc Networks and also the issues faced by Ad Hoc Networks is provided. The last part of this paper is dedicated to identifying the areas of improvement in the field of Ad Hoc Networks.
OVERVIEW
Ad Hoc Networks is defined as a collection of mobile hosts forming a temporary network without the aid of any centralized administration or standard support services. In Latin, ad hoc literally means "for this," further meaning "for this purpose only," and thus usually temporary. Ad hoc networks represent complex distributed systems that comprise wireless mobile nodes that can freely and dynamically self-organize into arbitrary and temporary, ‘‘ad-hoc’’ network topologies, allowing people and devices to seamlessly inter-network in areas with no pre-existing communication infrastructure. The concept of Ad Hoc Networking has been around for nearly 20 years but has received renewed interest in the last 18 to 24 months.
In Ad Hoc Networks the individual mobile hosts (nodes) act at the same time as both the router and the host.
DESCRIPTION
An ad-hoc (or "spontaneous") network is a local area network or any other small network, especially one with wireless or temporary plug-in connections, in which some of the network devices are part of the network only for the duration of a communication session, whereas in the case of mobile or portable devices it is part of the network when in some close proximity to the rest of the network. In Latin, ad hoc literally means "for this," further meaning "for this purpose only," and thus usually temporary. Ad Hoc Networks are future alternative to the current trend of connections among wireless devices via fixed infrastructure-based service.