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A Novel Approach to Exponential Speedup of Simulation Events in Wireless Networks

We demonstrate a new approach that yields exponential speedup of communication events in discrete event simulations (DES) of mobile wireless networks. With the trending explosive growth of wireless devices including Internet of things devices, it is important to have the capability to simulate wireless networks at large scale accurately. Unfortunately, current simulation techniques are inadequate for large-scale network simulation especially at high rate of total transmission events due to poor performance scaling. This has limited many studies to much smaller sizes than desired. We propose a method for attaining high fidelity DES of mobile wireless networks that leverages (i) path loss of transmissions and (ii) the relatively slower topology changes in a high transmission rate environment. Our approach averages a runtime of k(r)O(log N) per event, where N is the number of simulated wireless nodes, r is a factor of maximum transmission range, and k(r) is typically constant obeying k(r)≪ N.