Effects of Carrier Sense Modeling on Wireless Network Simulation Results
The authors investigate the effect of radio modeling on the simulation results of low-power wireless networks. In particular they focus on the modeling of carrier sensing and state transition delays and describe how these aspects of low-power radios are captured in the Castalia simulator. These aspects are usually neglected by network-level simulators yet they can have a significant effect on the higher level simulation results. They show these effects by exploring a simple simulation scenario: a clique of N nodes - all in range with each other-with N-1 transmitter nodes sending packets to one receiver node, employing the simple CSMA/CA MAC protocol.