Authors
Howon Lee, Taesoo Kwon, Dong-Ho Cho, Geunhwi Lim, Yong Chang
Publication date
2006/5/7
Conference
2006 IEEE 63rd Vehicular Technology Conference
Volume
3
Pages
1231-1235
Publisher
IEEE
Description
There are several scheduling algorithms for voice over IP (VoIP) services in IEEE 802.16e systems, such as unsolicited grant service (UGS), real-time polling service (rtPS), and extended real-time polling service (ertPS). The ertPS is a new scheduling algorithm for VoIP services with variable data rates and silence suppression, and this algorithm is recently proposed and accepted in the IEEE 802.16e standard. In this paper, we analyze and discuss the performance of the scheduling algorithms recommended in IEEE 802.16e systems including the ertPS algorithm. Through the analysis of resource utilization efficiency and VoIP capacity, we show that the UGS and rtPS algorithms have some problems, which are the waste of uplink resources in the UGS algorithm, and additional access delay and MAC overhead due to bandwidth request process in the rtPS algorithm, to support the VoIP services. In addition, for …
Total citations
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Scholar articles
H Lee, T Kwon, DH Cho, G Lim, Y Chang - 2006 IEEE 63rd Vehicular Technology Conference, 2006