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QoS packet-scheduling scheme for VoIP services in IEEE 802.16e systems

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4 Author(s)
Jang, Jaeshin ; Department of Information and Communications Engineering, Inje University, Korea ; Lee, Jong-Hyup ; Cheong, Seung-Kook ; Kim, Young-Sun

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.

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Communications and Networks, Journal of  (Volume:11 ,  Issue: 1 )