TCP Performance in Cognitive Multi-Radio Mesh Networks
Wireless Mesh Networks (WMNs) that operate in license free spectrum portions (e.g. ISM bands) in dense urban areas face heavy interference from coexisting devices such as residential access points. The authors address this challenge by designing Urban-X which is a new architecture for Multi-Radio Cognitive Mesh Networks. It combines principles from Dynamic Spectrum Access Networks to develop novel spectrum aware channel assignment and routing algorithms. However, spectrum sensing and channel switching overhead may lead to a large variation in delay and available bandwidth. In this paper, they evaluate the impact of Urban X on TCP.