Lily H. Zhu

Quality of service support in 1x EV-DO Revision A systems

Quality of service (QoS) support in wireless data networks becomes ever more imperative in the face of rapid introduction of multimedia services into the wireless domain. In this paper, we discuss the limitations of supporting end-to-end QoS applications in the current 1x EV-DO Release 0 system. We give an overview of the newly developed CDMA2000∗ standards framework that allows flow-based QoS authorization, negotiation, admission, enforcement, and accounting for 1x EV-DO Revision A systems. We investigate key QoS techniques, with an emphasis on air interface scheduling, media access control, call/flow admission, overload control, and flow classification. A video telephony (VT) application is used to demonstrate the effectiveness of these techniques. Finally, we highlight several advancements of 1x EV-DO QoS development directions.