Title :
Uplink performance analysis of VoIP services in TDD-OFDMA WiMAX networks
Author :
Yu, Ke ; Wang, Xuan ; Zhang, Lin
Author_Institution :
Sch. of Inf. & Commun. Eng., Beijing Univ. of Posts & Telecommun. (BUPT), Beijing, China
Abstract :
IEEE 802.16 based WiMAX is fast emerging as a representative last-mile broadband wireless access technology. In this paper, a novel uplink performance analysis model focusing on the VoIP services in TDD-OFDMA based WiMAX network is proposed. Based on the analysis model, the effect of scheduling and resource allocation on the VoIP performance is discussed. The numerical results show that the packet aggregation in MAC layer and a reasonable polling interval both can improve the VoIP capacity in WiMAX network.
Keywords :
Internet telephony; OFDM modulation; WiMax; access protocols; resource allocation; scheduling; time division multiplexing; IEEE 802.16 based WiMAX; MAC layer; TDD-OFDMA WiMAX network; VoIP capacity; VoIP service; last-mile broadband wireless access technology; packet aggregation; polling interval; resource allocation; scheduling; uplink performance analysis; Delay; Internet telephony; Performance analysis; Performance loss; Resource management; Scheduling; Streaming media; Telecommunication traffic; Traffic control; WiMAX; Orthogonal Frequency Division Multiple Access (OFDMA); Scheduling; Voice over Internet Protocol (VoIP); WiMAX;
Conference_Titel :
Communications and Networking in China, 2009. ChinaCOM 2009. Fourth International Conference on
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4337-6
Electronic_ISBN :
978-1-4244-4337-6
DOI :
10.1109/CHINACOM.2009.5339799
