Professor Myung Lee at the Department of Electrical Engineering has led an Institute of Electrical and Electronic Engineers (IEEE) standard task group as the chairman to publish, for the first time, the wireless mesh standard in May 2009. The standard is to be used to construct wireless mesh networks, for example, wireless sensor applications as well as home area networks to support multimedia applications. The published standard is called IEEE 802.15.5 WPAN Mesh (Wireless Personal Area Networks) which comprises two parts: low data rate part and high data rate part. Especially the low rate part focuses on the emerging wireless sensor networks applications including environmental monitoring, smart buildings, smart grid, medical care, and many other industry and military applications. The IEEE 802.15.5 builds upon two classes of MAC protocols to form wireless mesh networks: IEEE 802.15.4 (aka ZigBee device) and IEEE 802.15.3. Since 2003, Professor Lee and his research group have been actively participating and contributing to international standards in the area of wireless sensor and ad hoc networks. The main mesh algorithms included in the IEEE 802.15.5 and ZigBee networks are the team’s research contributions over the years.