Abstract:

In AODV protocol with the dynamic topology networks，the source node S requests a route to an arbitrary destination node D with flooding broadcast the RREQ message，but there is only one destination node sink in a WBAN，other nodes involved in receiving and forwarding RREQ have wasted energy except the nodes on minimum hop count routing.An energy balance AODV protocol with multicast route discovery for wireless body area networks was proposed，it increased the minimum hop count to sink hops，the next hop node to sink next and the node itself has the forwarding capability isforward three parameters in a hello message，and selects neighbors which could reach the sink only to participate in forwarding the RREQ message.This protocol effectively reduces the energy cost of the routing discovery through changing the broadcast to multicast，and prolongs the service life of WBAN with energy balance.The performance analysis and simulation experiment indicate that the proposed protocol is more advantaged than similar EAAODV in the number of RREQ，packet delivery ratio and energy consumption.

Key words: wireless body area network, AODV protocol, route discovery, hello message