Title :
Delay Analysis and Performance Evaluation of a Guaranteed QoS Provisioning Mechanism for Real-Time Traffic in IEEE 802.16e BWA Systems
Author :
Deng, Der-Jiunn ; Ke, Chih-Heng ; Huang, Yueh-Min ; Chen, Hsiao-Hwa
Author_Institution :
Dept. of CSIE, NCUE, Changhua
Abstract :
Nowadays, multimedia applications are expected to be an important traffic source in wireless networks. Such sources usually have stringent delay requirements and in many cases they should be delivered exactly as they were generated. In this paper, we propose a novel pulling based uplink packet scheduling policy for rtPS/ertPS (real-time polling service/extended real-time polling service) traffic to support real-time applications, with strict delay requirements, such as VBR (variable bit rate) traffic in IEEE 802.16e BWA (broadband wireless access) systems. The proposed transmit-permission policy can derive sufficient conditions such that all the rtPS/ertPS sources satisfy their time constraints to provide deterministic QoS (quality of service) guarantees. In addition to theoretical analysis, simulations are conducted to evaluate the performance of the proposed scheme. As it turns out, our design provides a good quality performance in the IEEE 802.16e BWA systems.
Keywords :
WiMax; multimedia communication; quality of service; radio access networks; IEEE 802.16e BWA systems; broadband wireless access; delay analysis; ertPS; extended real-time polling service; guaranteed QoS provisioning mechanism; multimedia applications; pulling based uplink packet scheduling policy; quality of service; real-time polling service; real-time traffic; rtPS; transmit-permission policy; variable bit rate; wireless networks; Bit rate; Delay; Performance analysis; Quality of service; Real time systems; Scheduling algorithm; Sufficient conditions; Telecommunication traffic; Traffic control; Wireless networks;
Conference_Titel :
Wireless Communications and Mobile Computing Conference, 2008. IWCMC '08. International
Conference_Location :
Crete Island
Print_ISBN :
978-1-4244-2201-2
Electronic_ISBN :
978-1-4244-2202-9
DOI :
10.1109/IWCMC.2008.57