Overview NUS wireless mesh network is an experimental outdoor testbed deployed in Prince George Park Residences (PGPR) in Kent Ridge campus of NUS. PGPR is a typical urban environment in Singapore, with many high-rise buildings (more than 10 storeys), which is not friendly to the transmission of wireless signals. There are currently 20 mesh nodes in our mesh network, occupying 20 residential blocks in PGPR. Each node has two Wi-Fi adapters (11bg and 11abg) with antennas fixed on the wall of buildings. About half of nodes reside at floor 7 and others at floor 3 and floor 10. Thus the network topology is in 3-dimension. Please refer to the page in Wikipedia for more general information about wireless mesh networks. Deployment map Inside a mesh node The hardware device of our mesh node is Alix2c2 board from PCEngines (see below). The operating system inside is OpenWrt. We have been evaluating MIT's Roofnet routing protocol since the deployment of our testbed. Copyright 2009 NUS Soc CIRL2. All Rights Reserved.