Modeling and Analyzing Per-Flow Saturation Throughput for Wireless Ad Hoc Networks with Directional Antennas
Xinru Zhao, Lei Lei, Zhilin Li · 2018
Throughput is an important factor to estimate the performance of wireless ad hoc networks. However, what remains unaddressed is how to analyze the per-flow saturation throughput for networks with directional antennas. In this paper, a three-dimensional Markov chain model is used to analyze the per-flow saturation throughput in the typical directional random access protocol (D-MAC protocol). Simulation results show that different flows have different saturation throughputs due to directional hidden terminals. Therefore, this paper focuses on analyzing per-flow saturation throughput in single-hop directional ad hoc networks. It first derives the transmission probability when taking the three-dimensional Markov chain model into account, then analyzes the collision probability of each flow considering collisions caused by directional hidden terminals. The paper further studies the per-flow saturation throughput in the network. Extensive simulations demonstrate the accuracy of the proposed model.