Controlled flooding with passive anti-flooding for urgent messages in Body Area Sensor Networks

This paper proposes a novel routing scheme, named Controlled Flooding with Passive Anti-Flooding (CFPAF), aiming at handling Urgent Messages (UMs) in Body Area Sensor Network (BASN). By contrast to most of existing routing schemes, which employ common flooding methods for forwarding UMs towards the destination, CFPAF combines a Controlled Flooding approach with Passive Anti-Flooding capability for forwarding UMs while reducing the transmission cost. In addition, Advance Gossip Mechanism is adopted in CFPAF to further reduce the UM flooding storm. Simulation results show that compared to the classic Multi-Path Forwarding method, CFPAF dramatically reduces the number of forwarded packages without significantly affecting the average end-to-end delay.