Proposal of Wireless Traffic Control Schemes for Wireless LANs

Takefumi HIRAGURI  Takeo ICHIKAWA  Masataka IIZUKA  Shuji KUBOTA  

Publication
IEICE TRANSACTIONS on Communications   Vol.E91-B   No.5   pp.1340-1348
Publication Date: 2008/05/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.5.1340
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Communication Quality)
Category: QoS Control Mechanism and System
Keyword: 
wireless LAN,  IEEE802.11,  traffic control,  load barancing,  QoS,  

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Summary: 
This paper proposes two traffic control schemes to support the communication quality of multimedia streaming services such as VoIP and audio/video over IEEE 802.11 wireless LAN systems. The main features of the proposed scheme are bandwidth control for each flow of the multimedia streaming service and load balancing between access points (APs) of the wireless LAN by using information of data link, network and transport layers. The proposed schemes are implemented on a Linux machine which is called the wireless traffic controller (WTC). The WTC connects a high capacity backbone network and an access network to which the APs are attached. We evaluated the performance of the proposed WTC and confirmed that the communication quality of the multimedia streaming would be greatly improved by using this technique.