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Erschienen in:
2009 | OriginalPaper | Buchkapitel
Supporting Session and Access Point Mobility in a Large Multi-provider Multi-vendor Municipal WiFi Network
verfasst von : Timo Ojala, Toni Hakanen, Ossi Salmi, Mikko Kenttälä, Juha Tiensyrjä
Erschienen in: AccessNets
Verlag: Springer Berlin Heidelberg
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We present a simple network design for a large multi-provider municipal WiFi network where the WiFi zones of multiple organizations are merged into a single IP subnet at a central layer 2 switch. The design provides built-in session mobility support for the WiFi clients using the network, without any additional software at the client. We also provide a simple design for mobile access points so that they belong to the same IP subnet. We analyze the session mobility of the over 12000 devices using our network in January 2008. We also provide a comparison of the usage of multi-mode mobile devices and WiFi laptops, and characterize the roaming performance of a standard WiFi laptop in our network.