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QoS Packet-Scheduling Scheme for VoIP Services in IEEE 802.16e Systems  

Jang, Jae-Shin (Department of Information and Communications Engineering, Inje University)
Lee, Jong-Hyup (Department of Information and Communications Engineering, Inje University)
Cheong, Seung-Kook (Network research group, ETRI)
Kim, Young-Sun (Network research group, ETRI)
Publication Information
Journal of Communications and Networks / v.11, no.1, 2009 , pp. 36-41 More about this Journal
Abstract
The IEEE 802.16 wireless metropolitan area network (WMAN) standard is designed to correct expensive communication costs in CDMA-based mobile communication systems and limited coverage problems in wireless LAN systems. Thus, the IEEE 802.16e standard can provide mobile high-speed packet access between mobile stations and the Internet service provider through the base station with cheap communication fees. To efficiently accommodate voice over IP (VoIP) services in IEEE 802.16 systems, an uplink quality of service packet-scheduling scheme is proposed, and its performance is evaluated with an NS-2 network simulator in this paper. Numerical results show that this proposed scheme can increase the system capacity by 100% more than in the unsolicited rand service (UGS) scheme and 30% more than the extended real-time polling service (ertPS) scheme, respectively.
Keywords
extended real-time polling service (ertPS); IEEE 802.16e; packet-scheduling; quality of service (QoS); unsolicited grant service (UGS);
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