Device-to-device (D2D) communication offers an underlying LTE-Advanced wireless technology that meets the demands for increasing data rates, delivering high bandwidths and offloading traffic from existing networks. The potential applications of D2D communication include peer-to-peer file sharing, supporting national security and public safety. Spectral and energy efficiencies need to be carefully designed and improved while meeting the quality of services requirements. Researchers at A&M-Commerce aim to address these challenges on mobility and interference management for underlay D2D communications in future cellular networks.