Paper Info
Title
Opportunistic QoS Enhanced Scheduler for Real-Time Traffic in Wireless Communication Systems
Abstract
The task of a packet scheduler for real-time traffic is to ensure that packet arrivals satisfy certain quality of service (QoS) requirements. At the same time, it is necessary to make efficient use of the limited capacity of the time-varying wireless fading channel. These two requirements are often in conflict to each other. Most existing schedulers either concentrate on the effective use of the radio resource, or only focus on QoS provisioning. By introducing the concept of flexible time and urgent time period, we propose an opportunistic QoS enhanced scheduler (OQES) which tries to maximize system throughput by exploiting the time-varying channel by applying multi-user diversity as well as a "meets delay" requirement. To avoid wasting bandwidth, a simple proactive packet discarding mechanism has also been introduced to discard packets that are to be dropped. Simulation results show that OQES outperforms existing schedulers for realtime traffic.
Year
DOI
Venue
2006
10.1109/VTCF.2006.275
VTC Fall
Keywords
Field
DocType
multiuser channels,scheduling,wireless communication systems,quality of service,fading channels,quality of service requirements,delay requirement,time-varying wireless fading channel,proactive packet discarding mechanism,time-varying channels,multiuser diversity,opportunistic qos enhanced scheduler,channel capacity,maximize system throughput,telecommunication traffic,real-time traffic,fading channel,satisfiability
Traffic classification,Scheduling (computing),Computer science,Network packet,Network scheduler,Computer network,Communication channel,Quality of service,Bandwidth (signal processing),Throughput
Conference
ISSN
ISBN
Citations 
1550-2252
1-4244-0063-5
0
PageRank 
References 
Authors
0.34
8
2
Name
Order
Citations
PageRank
Yonghong Zhang100.34
David G. Michelson211617.07