Cooperative Routing for Multi-flow Wireless Sensor Networks

In data-centric and application-oriented Wireless Sensor Network, effective energy-saving is an eternal theme, while in the scenarios deployed multiple flows, the network resource competition directly influences the whole network performance. To address this issue, a cooperative routing scheme is developed by comprehensively taking both the routing selection and contention avoidance into account, in which, for the delay-tolerant sensing tasks, the concept of abstract domain is introduced to extend the coverage relay nodes, and the cooperative routings are carefully selected in terms of the specific sensing and transmission requirements. Simulation conducted on NS-2 platform demonstrates that the proposed cooperative routing outperforms the compared routing selection strategies in significantly balancing the energy distribution and prolonging the network lifetime.