A low-delay MAC protocol based on cross-layer optimization for wireless sensor networks
Weiliang Zhao · Journal of Chongqing University of Posts and Telecommunications · 2007
S-MAC is a representative MAC protocol for wireless sensor network.The protocol adopts the periodic listening and sleeping mechanism but induces large delay in the network.To solve this problem,CAL-MAC that is a low-delay MAC protocol for wireless sensor network is proposed.CAL-MAC adopts coordinated adaptive listening mechanism based on cross-layer optimization within the framework of S-MAC.In the mechanism,wireless sensor nodes perform coordinated adaptive listening depending on the routing information.Numerical analysis shows that CAL-MAC can reduce the delay and guarantee the energy efficiency.