Title :
Performance study of the WiMAX uplink scheduler
Author :
Ali, Darmawaty M. ; Dimyati, K.
Author_Institution :
Fac. of Electr. Eng., Univ. Teknol. Mara (UiTM), Shah Alam, Malaysia
Abstract :
The IEEE 802.16/802.16e provides powerful tools in order to achieve different QoS constraints. The MAC layer defined five scheduling service types to provide QoS differentiation for different types of applications. In this paper, we investigate the performance of the scheduling schemes deployed in the OPNET modeler by considering VoIP, video conferencing and non-real-time services. We further investigate the scheduling algorithm with respect to the end-to-end delay (ETE) when the subframe ratio is set to 2:1 and 1:1. Simulation results revealed that higher downlink subframe ratio should be employed for a data-only (non-real time) network while 1:1 subframe ratio is more appropriate in supporting real-time traffic network. A performance analysis and discussion are provided.
Keywords :
Internet telephony; WiMax; access protocols; packet radio networks; quality of service; teleconferencing; IEEE 802.16e; MAC layer; OPNET modeler; QoS constraints; QoS differentiation; VoIP; WiMAX uplink scheduler; deficit round robin; end-to-end delay; nonreal-time service; packet scheduling algorithm; priority scheduling; scheduling service; video conferencing; Bandwidth; Downlink; Frequency; Portable media players; Quality of service; Round robin; Scheduling algorithm; Telecommunication traffic; Videoconference; WiMAX; Deficit Round Robin (DRR); MAC layer; Priority Scheduling; mobile WiMAX QoS; packet scheduling algorithm;
Conference_Titel :
Communications (MICC), 2009 IEEE 9th Malaysia International Conference on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-5531-7
DOI :
10.1109/MICC.2009.5431620
