We have investigated the problems of frequent network failures due to severe channel interference and varying QoS requirements in multi-hop wireless mesh networks. We are developing algorithms and protocols that effectively handle such network failures through dynamic and adaptive configuration of network resources (e.g., multi-radio, MIMO).
We have built a multi-hop wireless mesh network that has following salient characteristics
- Small form-factor: Small Soekris 4826-50 wireless router has been used for each mesh node, and it is easy to deploy.
- Multi-radio capability: Each mesh node has two mini-PCI slots and is equipped with IEEE 802.11a/b/g combo cards.
- Real-life testbed: More than 20 mesh nodes have been deployed in the fourth floor of the Computer Science and Engineering building at The University of Michigan
- A mesh node uses Soekris board as shown in below
- Kang G. Shin
- Kyu-Han Kim
- Kyu-Han Kim and Kang G. Shin. Extended Abstract: Self-Healing Multi-Radio Wireless Mesh Networks. Proceedings of The13th annual ACM international conference on Mobile computing and networking (MobiCom’07). , pp. 326-329, September, 2007. PDF.
- Submitted for publication, 2007
- Wireless Link-Quality Measurement Framework