About the Author: KAMRAN ETEMAD, PhD, is the Director of Technology Standards at Intel Corporation, where he leads many various technical contributions and some of the key strategic and technical initiatives in the WiMAX Forum and IEEE 802.16 and in 3GPP. His research covers such areas as advanced MAC and PHY features for multicarrier and heteronymous radio access networks and system architecture/protocols for enhanced mobility and location and multicast/broadcast services. MING-YEE LAI, PhD, has more than twenty-five years of experience in telecommunications, networking, and information systems. He currently leads broadband wireless technology development at Telcordia Technologies, Inc. Dr. Lai has championed and been involved in a wide range of WiMAX projects, including WiMAX qualification, performance reconfiguration, priority services, and context aware policy-based resource control.