Optimal Packetization Interval for VoIP Applications Over IEEE 802.16 Networks

Shehan Perera, Harsha Sirisena, Krzysztof Pawlikowski

Abstract

An analysis of the impact of the packetization interval for constant bit rate traffic has been done in the context of the IEEE 802.16 MAC layer. Bandwidth used for overheads which include lower layer headers as well as retransmissions at the MAC layer is considered. An optimal packetization interval selection method for delay sensitive applications such as VoIP is proposed. Enhancements to the Unsolicited Grant Service retransmission strategy are proposed to further improve delay and minimize packet loss while making efficient use of the limited bandwidth resource.

Keywords

IEEE 802.16; UGS; packetization interval; VoIP

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