Centralized channel assignment and routing algorithms for multi-channel wireless mesh networks
ACM SIGMOBILE Mobile Computing and Communications Review
Theory, Volume 1, Queueing Systems
Theory, Volume 1, Queueing Systems
Multichannel mesh networks: challenges and protocols
IEEE Wireless Communications
Smart antenna techniques and their application to wireless ad hoc networks
IEEE Wireless Communications
Mesh networks: commodity multihop ad hoc networks
IEEE Communications Magazine
A survey on wireless mesh networks
IEEE Communications Magazine
Wireless Mesh Networks [Guest Editorial]
IEEE Communications Magazine
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A wireless mesh network (WMN) is one of important applications for mobile ad hoc networks (MANETs). Most researches about WMN employ IEEE 802.11 wireless LAN in wireless links. IEEE 802.11 supports multiple channels. Performance improvement strategies by using multiple interfaces and multiple channels were discussed. In this paper, we propose to apply a 3-sector antenna system to multi-interface and multi-channel WMN. In cellular networks, the 3-sector antenna system is widely used for enhancement of user capacity. Further improvement will be obtained if the 3-sector antenna system is applied to WMN. WMN has different features from cellular networks. In particular, the hidden node and exposed node problems are very important in WMN. The 3-sector antenna system is compared with the omni-directional antenna systems in terms of contention and collision rates. As a result, both rates of the 3-sector antenna system is smaller than or equal to those of the omni-directional antenna systems. The throughput is also analyzed with the consideration of hidden and exposed node problems. From the numerical results of the throughput analysis, the 3-sector antenna system achieves much better throughput performance than those of the omni-directional antenna systems.