H-Sim: A Concurrent Discrete-event Driven Sensor Network Simulation Platform

In this paper, we present an extensible, component-oriented, concurrent discrete-event driven wireless sensor network simulation platform: H-Sim. The components of the H-Sim system have high reusability and low coupling, it can solve the problems of having high coupling between modules and difficult to debug and use which exist in other simulation systems like NS-2. H-Sim can simulate the sensor nodes which has vary protocol stack and hardware architecture, and has the capability to process hybrid simulation with heterogeneous sensor nodes. H-Sim adopt concurrent multi-thread simulation method, it can take advantage of the power of multi-core CPU efficiently, and improve the throughput of the system observably. The schedule of the multi-threads increases the probability of the uncertainty in simulation processes, and makes the events which arrived at the same time interactive with each other sufficiently, besides that it also can increase the rationality and fidelity of the simulation.