Accurate Physical Layer Modeling for Wireless Network Simulations
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Network simulation offers an efficient, cost-effective way to assess how a network will behave under different operating conditions. But for a simulator to be useful in assessing the performance of networks, it should be able to run simulations using accurate, at-scale models at a high speed1. This is particularly challenging when simulating wireless networks, due to the complexities of the physical (PHY) layer.
For accurate simulation results, the network model used in the simulation must represent all relevant characteristics of the network at an adequate level of detail. For wireless networks, these include not only the protocols used at all layers and application traffic, but also the characteristics of wireless signal propagation and the factors which affect propagation, such as terrain features and weather effects. Also, it has been well established that for accurate results, the network model must accurately reflect the size of the physical network being analyzed.