Célio Albuquerque received the B.S. and M.S. degrees in electrical and electronics engineering from Universidade Federal do Rio de Janeiro, Brazil, in 1993 and 1995, and the M.S. and Ph.D. degrees in information and computer science from the University of California at Irvine in 1997 and 2000, respectively. From 2000 to 2003, he served as the networking architect for Magis Networks, designing high-speed wireless medium access control. Since 2004 he has been an Associate Professor at the Computer Science Department of Universidade Federal Fluminense, Brazil. His research interests include wireless networks, Internet architectures and protocols, multicast and multimedia services, and traffic control mechanisms.