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MAC Scheduling Scheme for VoIP Traffic Service in 3G LTE

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5 Author(s)
Sunggu Choi ; Electron. & Telecommun. Res. Inst., Chungnam ; Kyungkoo Jun ; Yeonseung Shin ; Seokhoon Kang
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3G Long Term Evolution, which aims for various mobile multimedia services provision by enhanced wireless performance, proposes the VoIP-based voice service through the PS domain. When delay and loss-sensitive VoIP traffic flows through the PS domain, more challenging technical difficulties are expected than in the existing 3G systems which provide the CS domain based voice service. Moreover, since 3G LTE, which adopts the OFDM as its physical layer, introduces Physical Resource Block (PRB) as the unit for the transmission resources, it becomes necessary to develop new types of resource management schemes. This paper proposes a MAC layer PRB scheduling algorithm for the efficient VoIP service in 3G LTE and shows the simulation results regarding its performance. The key idea of the algorithm consists of two parts; dynamic activation of a VoIP priority mode for the voice QoS satisfaction and adaptive adjustment of the VoIP priority mode duration in order to minimize the performance degradation induced by its priority mode application.

Published in:

Vehicular Technology Conference, 2007. VTC-2007 Fall. 2007 IEEE 66th

Date of Conference:

Sept. 30 2007-Oct. 3 2007

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