GAMesh: Automatic Placement of Wireless Mesh Nodes Via Genetic Algorithms
NBiS '08 Proceedings of the 2nd international conference on Network-Based Information Systems
An interference-free multicast for mesh networks with directional antennas
ICUFN'09 Proceedings of the first international conference on Ubiquitous and future networks
ISWCS'09 Proceedings of the 6th international conference on Symposium on Wireless Communication Systems
An overview of Channel Assignment methods for multi-radio multi-channel wireless mesh networks
Journal of Parallel and Distributed Computing
Understanding the joint application of wireless optimizations
Proceedings of the fifth ACM international workshop on Wireless network testbeds, experimental evaluation and characterization
EURASIP Journal on Wireless Communications and Networking - Special issue on simulators and experimental testbeds design and development for wireless networks
The myth of spatial reuse with directional antennas in indoor wireless networks
PAM'10 Proceedings of the 11th international conference on Passive and active measurement
Power control methods for improving spatial reuse in TDMA-based wireless mesh networks
ISRN Communications and Networking
Design of a fast handoff scheme for vehicular mesh networks with directional antennas
Proceedings of the first ACM international symposium on Design and analysis of intelligent vehicular networks and applications
Analysis of capacity improvement by directional antennas in wireless sensor networks
ACM Transactions on Sensor Networks (TOSN)
Traffic-aware channel width adaptation in long-distance 802.11 mesh networks
Proceedings of the 15th ACM international conference on Modeling, analysis and simulation of wireless and mobile systems
Improving minimum flow rate in wireless mesh networks by effective placement of directional antennas
Proceedings of the 16th ACM international conference on Modeling, analysis & simulation of wireless and mobile systems
On channel-discontinuity-constraint routing in wireless networks
Ad Hoc Networks
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Wireless mesh networks (WMNs) have been proposed as an effective solution for ubiquitous last-mile broadband access. Three key factors that affect the usability of WMNs are high throughput, cost-effectiveness, and ease of deployability. In this paper, we propose DMesh, a WMN architecture that combines spatial separation from directional antennas with frequency separation from orthogonal channels to improve the throughput of WMNs. DMesh achieves this improvement without inhibiting cost-effectiveness and ease of deployability by utilizing practical directional antennas that are widely and cheaply available (e.g., patch and yagi) in contrast to costly and bulky smart beamforming directional antennas. Thus, the key challenge in DMesh is to exploit spatial separation from such practical directional antennas despite their lack of electronic steerability and interference nulling, as well as the presence of significant sidelobes and backlobes. In this paper, we study how such practical directional antennas can improve the throughput of a WMN. Central to our architecture is a distributed, directional channel assignment algorithm for mesh routers that effectively exploits the spatial and frequency separation opportunities in a DMesh network. Simulation results show that DMesh improves the throughput of WMNs by up to 231% and reduces packet delay drastically compared to a multiradio multichannel omni antenna network. A DMesh implementation in our 16-node 802.11b WMN testbed using commercially available practical directional antennas provides transmission control protocol throughput gains ranging from 31% to 57%