Quality of service and mobility for the wireless internet

Authors:
J. Antonio García-Macías;Franck Rousseau;Gilles Berger-Sabbatel;Leyla Toumi;Andrzej Duda
Affiliations:
LSR-IMAG Laboratory, CNRS and Grenoble, Institute of Technology, Grenoble, France;LSR-IMAG Laboratory, CNRS and Grenoble, Institute of Technology, Grenoble, France;LSR-IMAG Laboratory, CNRS and Grenoble, Institute of Technology, Grenoble, France;LSR-IMAG Laboratory, CNRS and Grenoble, Institute of Technology, Grenoble, France;LSR-IMAG Laboratory, CNRS and Grenoble, Institute of Technology, Grenoble, France
Venue:
WMI '01 Proceedings of the first workshop on Wireless mobile internet
Year:
2001

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Abstract

Our paper explores the issue of how to provide appropriate qualityof Service mechanisms closely integrated with flexible mobilitymanagement in wireless local area networks. We consider them asaccess networks of choice for the high performance Wireless MobileInternet. We present a hierarchical QoS architecture that extendsDifferentiated Services (DiffServ) to mobile hosts in awireless environment. Our approach is based on controlling severalparameters of a wiireless LAN cell: the limited geographicaL spanto ensure the same high bit rate for all hosts, the constrainedrate of traffic sources to limit the use of the channel in functionof the required QoS and the limited number of active hosts to keepthe load sufficiently low. The QoS management is coupled withmobility management at the IP level. We use a micro-mobility schemeimplemented in the IPv6 layer with fast hand-offs between adjacentcells. Micro-mobility avoids address translation, traffictunnelling, and enables fast hand-offs. We give some details ofexperiments to show the quality of service diffferentiation overthe 802.11b network.