Analysis and Experiments of Maximum Throughput in Wireless Multi-Hop Networks for VoIP Application

Masahiko INABA  Yoshihiro TSUCHIYA  Hiroo SEKIYA  Shiro SAKATA  Kengo YAGYU  

IEICE TRANSACTIONS on Communications   Vol.E92-B   No.11   pp.3422-3431
Publication Date: 2009/11/01
Online ISSN: 1745-1345
DOI: 10.1587/transcom.E92.B.3422
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Network
wireless multi-hop networks,  IEEE 802.11,  throughput analysis,  voice over IP,  

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This paper quantitatively analyzes the maximum UDP (User Datagram Protocol) throughput for two-way flows in wireless string multi-hop networks. The validity of the analysis is shown by the comparison with the simulation and the experiment results. The authors also clarify the difference fundamental characteristics between a one-way flow and a two-way flow in detail based on the simulation results. The result shows that collisions at both ends' nodes are decisive in determining the throughput for two-way flows. The analyses are applicable to the estimation of VoIP (Voice over Internet Protocol) capacity for string multi-hop networks represented by WLAN (Wireless Local Area Network) mesh networks.