Enhancing AODV routing protocol to support QoS

Mobile Ad-hoc Networks MANET support for Quality of Service (QoS) is bonded by the capability of the routing protocol to select nodes that can provide the necessary resources that meet the QoS requirement. MANET is formed from wireless devices (nodes) that have limited resources and lacks any central management entity. Therefore, nodes inside the network have to exchange extra information to gain knowledge of other nodes capability inside the network, which in result consumes nodes limited resource. This paper proposes an enhancement to reactive routing protocol such as (Ad-Hoc ON Demand Distance Vector (AODV), by adding extra information about nodes processing delay to the routing messages and share it with the source of data that requested a route. Then the source node uses this information with the hop count gathered through the routing process to send the data that requires less delay through a path that combines the shortest path with minimum delay. Simulation results conducted using riverbed simulation software shows an improvement in the packet delivery ratio PDR and End-to-End delay for Minimum Delay Ad-Hoc ON Demand Distance Vector) (MD-AODV).