R. VILLALPANDO-HERNANDEZ received a M.Sc. degree in electronic engineering (telecommunications) and a Ph.D. degree in communications and information technologies from the Instituto Tecnologico y de Estudios Superiores de Monterrey (ITESM), Monterrey, in December 2008. She joined the Engineering Center, ITESM, Laguna, Torreon, Mexico. She has participated in several research projects involving network coding, security algorithms, position location in wireless networks, and the implementation of sensor networks. Her research interests include wireless and sensor networks. She is a member of the Mexican National Researchers System (SNI) Level I.