A Survey on QoS in AODV Routing Protocol for MANET

Abstract

Mobile Ad-hoc Network (MANET) is an infrastructure less mobile network, where the nodes communicate with each other in spite of frequent changes in network topology due to mobility, interference and highly error prone environment. Multimedia communication within MANET requires certain Quality of Services (QoS) constraints. Providing QoS in MANET is not an easy task due to its broadcast and dynamic nature, node mobility and resource constraints. There exist many protocols which take care of the QoS. Ad-hoc On-Demand Distance Vector (AODV) routing protocol is one of the well known MANET protocol, but have some limitations in term of QoS constraints. Many modifications have been suggested towards improvement in AODV performance to meet QoS challenges through focusing on bandwidth, Packet delivery ratio, energy and mechanism overheads.This paper exclusively summarizes all such modifications suggested for AODV, along with their benefits and limitations. The aim of this paper is to
facilitate literature survey in future researches such that several proposed modifications in AODV routing protocol can be probed quickly, and to identify areas for future research.