The talk will be given by Prof. Shuang-Hua YANG, Computer Science Department at Loughborough University. The talk will review the research work funded by various British Funding bodies and carried out by Prof. Yang’s research group. It will start from the basic concept of WSNs and the most commonly used communication protocol, then present 7 challenges and solutions in the design of WSNs, such as power management, interference and data fusion. Two completed applications, one for building fire safety, another for home automation and energy saving, will be introduced at the end of the talk.