TOSSIM: accurate and scalable simulation of entire TinyOS applications
Proceedings of the 1st international conference on Embedded networked sensor systems
J-Sim: A Simulation Environment for Wireless Sensor Networks
ANSS '05 Proceedings of the 38th annual Symposium on Simulation
Overhaul of ieee 802.11 modeling and simulation in ns-2
Proceedings of the 10th ACM Symposium on Modeling, analysis, and simulation of wireless and mobile systems
Effects of sensor-to-sensor link modeling on body area network simulations
Proceedings of the 7th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
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We investigate the effect of radio modeling on the simulation results of low-power wireless networks. In particular we 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. We 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. Varying the sending rate and number of nodes, we show that the throughput at the receiver node can greatly vary depending on the assumptions we make about the radio. We also show that simple decisions at the MAC level, such as the back-off duration and the method of transmitting buffered packets, have a much more pronounced effect on performance when the radio is modeled more accurately.