Title :
A Scheduling Algorithm Based on Channel State for VoIP Services in IEEE Std 802.16e System
Author :
Zhang, Hongxia ; Chen, Hong ; Fu, Xiaomei ; Dai, Jufeng
Author_Institution :
Sch. of Electr. Inf. & Eng., Tianjin Univ., Tianjin
Abstract :
The voice-over-Internet protocol (VoIP) has attracted a great deal of attention in the field of wireless mobile networks. In this paper, we propose an improved ertPS scheduling algorithm for VoIP services in IEEE Std 802.16e system. It can solve both the problems waste of uplink resources caused by the UGS algorithm as well as MAC overhead and access delay caused by the rtPS algorithm, it also identify whether the channel state is good or bad. Conclusions are drawn for an IEEE 802.16e wireless system working in point-to-multipoint (PMP) mode, with time division duplex (TDD). The target air interface is WirelessMAN-OFDM.
Keywords :
Internet telephony; WiMax; time division multiplexing; IEEE Std 802.16e; WiMax; access delay; point-to-multipoint mode; voice-over-Internet protocol; wireless mobile networks; Detectors; Electronic mail; Internet telephony; Metropolitan area networks; OFDM; Portable media players; Real time systems; Scheduling algorithm; WiMAX; Wireless LAN; Channel State; IEEE Std 802.16e; Scheduling Algorithm; VoIP; WiMAX;
Conference_Titel :
Advanced Communication Technology, 2008. ICACT 2008. 10th International Conference on
Conference_Location :
Gangwon-Do
Print_ISBN :
978-89-5519-136-3
DOI :
10.1109/ICACT.2008.4494068
