Proceedings of the 5th ACM international symposium on Mobile ad hoc networking and computing
Link-level measurements from an 802.11b mesh network
Proceedings of the 2004 conference on Applications, technologies, architectures, and protocols for computer communications
Proceedings of the 10th annual international conference on Mobile computing and networking
A Multi-Radio Unification Protocol for IEEE 802.11 Wireless Networks
BROADNETS '04 Proceedings of the First International Conference on Broadband Networks
Architecture and evaluation of an unplanned 802.11b mesh network
Proceedings of the 11th annual international conference on Mobile computing and networking
Measurement driven deployment of a two-tier urban mesh access network
Proceedings of the 4th international conference on Mobile systems, applications and services
Cooperative Asynchronous Multichannel MAC: Design, Analysis, and Implementation
IEEE Transactions on Mobile Computing
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Multi-channel access presents a huge potential to boost the performance of 802.11 mesh/adhoc networks. It allows multiple simultaneous transmissions in a given radio neighborhood that improves network throughput and scalability. Still, its research is limited to simulations only and its experimental study is rare. To bridge this gap, we have setup a testbed called OpenWireless to develop and test multi-channel MAC protocols in a mesh/adhoc scenario. The testbed consists of 20 nodes that are based on commodity hardware and use the Linux 802.11 networking architecture for wireless applications. In this paper, we present the design of the testbed and development experience gained. We will discuss experimental studies that identify some of the issues involved in using commodity hardware for the multi-channel MAC development. In the end, the paper also discusses the implementation of our multi-channel MAC protocol and its experimental evaluation that validates the potential of the multi-channel access in mesh/adhoc networks as compared to the traditional single channel access.