The Communications Network Research Institute (CNRI) specialises in developing innovative technologies to support the delivery of real-time service such as VoIP and video streaming on wireless networks, specifically IEEE 802.11 or Wi-Fi networks. Recently, the CNRI has been addressing a number of the challenges for wireless mesh networks where it is investigating resource aware routing techniques, measurements of the characteristics of IEEE 802.11 wireless links, interference mitigation, multi-radio hardware platforms, rate selection, security, output power optimization, and fragmentation threshold tuning.