About the Author
Dirk Kroeselberg received a diploma degree in Mathematics and Computer Science from the University of Giessen, Germany, in 1997. He joined Siemens in 1998, working on a broad range of communication security topics for Siemens Corporate Technology and Siemens Mobile Phones. He has been with Nokia Siemens Networks since April 2007, being responsible for WiMAX Forum network standardization. He is co-chairing the work on network architecture evolution within the WiMAX Forum Network Working Group (NWG) and leads the standardization efforts within NWG for emergency services support and WiMAX-SIM that are now part of the Release 1.5 WiMAX network specifications.
Aik Chindapol received his Ph.D. in Electrical Engineering from the University of Washington in 2000. He joined Siemens Mobile Networks, Siemens Corporate Research and Nokia Siemens Networks in 2001, 2003 and 2007, respectively. Prior to WiMAX, he was previously engaged in research and standardization of GSM/GPRS/EDGE, Wi-Fi and Bluetooth. During 2006–2009, he led teams from Siemens and Nokia Siemens Networks in the successful standardization of IEEE 802.16, Mobile WiMAX Radio Release 1.5, and the 2009 revision of the IEEE 802.16 standard. His current research interests include network coding, error control coding, radio resource management and performance optimization of mobile broadband systems.