User Oriented Quality of Service Framework for WiMAX

Abstract

IEEE 802.16 (WiMAX) provides differentiated Quality of Service (QoS) (IEEE 802.16 2004) (IEEE 802.16e 2005) (Vaughan-Nichols 2004). This is achieved by having five different types of service classes. Each of these service classes caters to specific type of data. Unsolicited Grant Services (UGS) supports real time data streams that generate fixed size packets at periodic intervals. For example Voice over IP without silence suppression, T1/E1. Extended Real Time Polling Services (eRTPS) is designed to support real-time service flows that generate variable sized data packets on periodic basis, like VoIP with silence suppression. Real Time Polling Services (RTPS) supports real time data streams that generate variable size packets on periodic basis. For example Multimedia formats like an MPEG video. Non Real Time Polling Services (nRTPS) supports delay tolerant data streams generating variable size data packets, like FTP. Best Effort(BE) supports data streams which do not require any service level. Ex Web browsing, Email etc.