Advantages Of MANET

A mobile ad hoc network (MANET) is a self-configuring, infrastructure-less network of mobile devices which is connected without any wires. In MANET the node can move in any direction independently.The main challenge in building a MANET is equipping each device to continuously maintain the information needed and to properly route traffic. So, these networks may operate by themselves or may be connected to the larger Internet. They may contain one or multiple and different transceivers between the nodes. Finally in a highly dynamic, autonomous topology. Vehicular Ad-hoc Networks (VANETs) are used cars and cars and roadside equipment. MANETS can be used for facilitating the collection of sensor data for data mining for a variety of applications

I.INTRODUCTION MANET is one of the wireless adhoc network which is in top of link layer in networking environment .It is a self forming, point to point network. Through the development of various technologies like laptops and 802.11 wifi wireless networking MANET become more famous. It will deliver good service, quality and best connectivity to the user .When mobility is added with time varying connectivity without affecting the users quality of service then it will become difficult for the developers.

Networking is also known as MANET, or Mobile Ad hoc Networking systems. A MANET system is a set of mobile devices which need to provide the functions like streaming voice, sending data and video between pairs of devices which are used as relays to avoid the need for infrastructure [1].The Figure1 specifies workings of MANET. Figure.1 Nodes Connected in MANET

II. Characteristics of MANET

In MANET, each and every node will act as both host and router. This is autonomous in

Comparing to the performance of the following routing protocols LRPH,AODV,DOA,DSR are studied and compared based on control overhead,packet delivery,end to end delay of the ad hoc network [10]. A lightweight hierarchical routing model, Way Point Routing (WPR), in which a number of intermediate nodes on a route are selected as waypoints and the route is divided into segments by the waypoints. Waypoints, including the source and the destination, run a high-level intersegment routing protocol, while the nodes on each segment run a low-level intrasegment routing protocol. One distinct advantage of our model is that when a node on the route moves out or fails, instead of discarding the wholeoriginal route and discovering a new route from the source to the destination, only the two waypoint nodes of the broken segment haveto find a new segment. In addition, our model is lightweight because it maintains a hierarchy only for nodes on active routes.[3]On theother hand, existing hierarchical routing protocols such as CGSR and ZRP maintain hierarchies for the entire network. We present aninstantiation of WPR, where we use DSR as the intersegment routing protocol and AODV as the intrasegment routing protocol. This instantiation is termed DSR over AODV (DOA) routing protocol. Thus, DSR and AODV—two well-known on-demand routing protocolsfor MANETs—are combined into one hierarchical