Improvement in QoS of MANET Routing by finding optimal route using Mobile Agent paradigm and Intelligent Routing Decision using Fuzzy Logic Approach

Wireless network can be mainly categorized in two broad classes called infrastructure based and infrastructure less networks. Infrastructure based networks with a centralized control unit called base station. Existing infrastructure based cellular network can carry both data and voice. Second is infrastructure-less networks and Mobile ad-hoc Networks (MANETs) come under this category. An ad-doc network work as a specially appointed system is an accumulation of specialized devices that desire to impart, yet have no fixed foundation accessible, and have no pre-decided association of accessible connections. In the absence of centralized administration, and its inbuilt unique characteristics like resource scarceness, high mobility of nodes, quickly changing network topology makes Quality of Service (QoS) routing a challenging task in MANET. In this research paper we proposed two optimal routing, first routing technique is used to improve quality of service of Ad-hoc On demand Distance vector (AODV) routing protocol by using mobile software agent (MSA) paradigm taking multiple parameters Received Signal strength, Remaining Energy, Queue length, and delay together for finding path from source to destination node Simulation results prove that our proposed mechanism is capable to improve the quality of traditional AODV routing protocol using mobile agent technique and second technique is based on fuzzy logic technique for finding optimal routing decision with four complex QoS matrices for MANET environment and capable to take optimal routing decision.