A self-adaptive reconfiguration scheme for throughput maximization in municipal WMNs

摘要

Multi-hop wireless mesh network (WMN) is considered to be an economical technique for last-mile broadband Internet access (Tang et al., 2006). Fueled by the rapid development of the Internet of Things, it is increasing important to provide robust and high-quality urban wireless mesh networks (WMNs) for public service. However, WMNs encounter frequent link failures during their lifetime in practical use as a consequence of large-scale wireless interference, block buildings, etc., which deeply influences the performance of the network. These failures should be recovered in time or prevented with foresight. Tremendous labor and management cost should also be avoided. In this paper, we focus on an interesting phenomenon called "loop effect" in urban WMNs which may cause frequent link failures. A scheme named anti-loop network reconfiguration system (ALRS) for link recovery in municipal WMNs with QoS requirement is proposed and analyzed. ALRS takes the historical information into consideration to achieve maximum throughput, interference avoidance and self-reconfiguration with no requirement on mesh node antennas. Our evaluation results show that ALRS outperforms all the existing techniques in improving network throughput and reducing the occurrence probability of continuous link failure.