On Supporting Multiple Quality-of-Services Classes in Mobile WiMAX Handoff

• Published in: International Conference of Computing in Engineering, Science and Information pp. 73 - 78
• Main Authors: Chellappan, B., Teng-Sheng Moh, Moh, M.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.04.2009
• Subjects: Delay effects; Energy saving; IEEE 802.16; Metropolitan area networks; Microwave technology; Mobile communication; mobile networks; Mobile radio mobility management; mobility management; Quality of service; Quality-of-Services (QoS); Streaming media; Switches; WiMAX; Wireless LAN
• ISBN: 9780769535388; 0769535380
• DOI: 10.1109/ICC.2009.60

IEEE 802.16 WiMAX (Worldwide Interoperability for Microwave Access) is a major standard technology for wireless metropolitan area networks. Quality-of-service (QoS) scheduling classes and mobility management are two main issues for supporting seamless high-speed communications. Previous works on WiMAX handoff however have mainly addressed a particular scenario or a specific QoS class. This work proposes a context-sensitive handoff scheme that supports the five IEEE 802.16 QoS scheduling classes.Furthermore, it is energy-aware - it may switch to energy-saving mode during a handoff. Performance evaluation shows that,comparing with three existing methods, the proposed scheme successfully supports the five QoS classes in both layers 2 and 3 handoff, reduces end-to-end handoff delay, delay jitter, and service disruption time. It also increases throughput and energy efficiency.We believe that this work is a significant contribution on providing high-quality, seamless data and media streaming over IEEE802.16 networks.