QoS-AODV6E: An energy-balancing QoS routing scheme for WSNs

Wireless Sensor Networks (WSN) now advance into areas where new scenarios and applications require WSNs to meet certain Quality of Service (QoS) requirements. To tackle these challenges, a routing approach has to consider limited energy supply of sensor nodes, dynamic network conditions as well as node mobility. This paper presents QoS-AODV6E, a routing scheme based on the Ad-hoc On-Demand Distance Vector (AODV) routing protocol, which encompasses QoS and Energy-Awareness for mobile WSNs. Based on the reactive AODV routing protocol, QoS-AODV6E allows applications to specify QoS parameters and finds suitable routes that support their requirements. In order to prolong the lifetime of the network, QoS-AODV6E balances the energy consumption between different paths through the network based on the weakest node. We evaluate our implementation of QoS-AODV6E in Contiki using simulation and measurements.