Quality of service support in 1x EV-do revision a systems

Abstract

Quality of service (QoS) The 1x EV-DO Revision A (DOrA) system incorporates multifaceted improvements to support QoS applications. The enhancements over the air interface, especially on the reverse link, help in reducing call setup times, decreasing transmission delays, and allowing service control by diverse methods that include not only the user-based control as DOr0 does, but also a new "flow-based" QoS controlling approach. A flow for an application is a series of packets that share a specific instantiation of the defined protocol layers. For example, a flow may consist of the packets of a Real Time Protocol (RTP)/User Datagram Protocol (UDP)/IP instantiation. The flow-based QoS method prioritizes flows across users based on the QoS requirements of the applications. These requirements may include, but are not limited to, bandwidth, delay, jitter, packet loss, priority, and traffic class. DOrA provides greater

Downlink Performance for Mixed Web/VoIP Traffic in 1xEVDO Revision A Networks

“…The second observation is that, to guarantee a certain degree of QoS for Web traffic while the VoIP traffic has reached its own QoS requirements, priority should be given to Web traffic when scheduling. This implies that an appropriate QoS scheduling should exist to support QoS for multiple classes of traffic in the network, which is still an open area for EVDO networks [8].…”

“…However, how these two impact each other is not clear when both require QoS. Therefore, how to do resource allocation and QoS scheduling for mixed traffic in an EVDO network is still under investigation [3], [8].…”

Exploiting Time and User Diversity in Distributed Medium Access Control for Mobile Ad-Hoc Networks

“…Improving the overall network capacity and performance requires developing appropriate methods and algorithms to gain knowledge of the user specific radio frequency (RF) condition and application traffic requirement. Innovative techniques in radio resource management have been designed for infrastructure based commercial wireless systems and networks [2] [3]. In this paper, we propose to develop an intelligent MAC protocol with a design approach that focuses on the development of distributed algorithms to exploit time and user diversity to improve the network efficiency.…”