PROBLEM ANALYSIS

Problem Analysis

Problem Analysis

Summary

The ad hoc on-demand distance-vector (AODV) routing protocol has been designed for use in ad hoc networks, which are presently receiving wide interest within many diverse research communities. These networks represent a significant departure from traditional wired networks due to the distinguishing characteristics of both the wireless channel and mobile devices. Consequently, AODV incorporates many novel features for handling mobility, reduced capacity links, and the variable, indeterminate nature of the signaling range of wireless media. Since its initial design, AODV has evolved in a number of ways for improved performance, robustness, and better scalability. Nevertheless, we see many opportunities for continued improvement.Introduction

Routing is the process of finding a path between two or more nodes that want to interact with each other. Many types of transmission in computer networks exist such as unicast, multicast and broadcast. Some applications, such as distributed database systems and audio/video teleconferencing, need multicast communication. Multicasting is the transmission of data packets from one sender to multiple receivers . Multicasting can be implemented in several ways: one-to-all unicast, explicit multicast, or application-level multicast . Explicit multicast uses multicast routing algorithms. It is better than one-to-all unicast according to the simulation results in.

A Mobile Ad hoc Network (MANET) is a wireless network composed of mobile nodes that has a dynamic nature. There are no routers, servers, cables, or access point, i.e. no infrastructure. The mobile nodes of MANET should function as a router to forward packets over MANET. The ad hoc topology may change with time according to the mobile nodes movement. Some applications of MANET relate to temporary networks in airports, military battlefield, and search and rescue operations (Brutch 2001).

The multicast routing protocols proposed for MANET are classified into four categories according to the route construction or route topology and : tree-based approaches, ...