Supporting Session and Access Point Mobility in a Large Multi-provider Multi-vendor Municipal WiFi Network

Timo Ojala; Toni Hakanen; Ossi Salmi; Mikko Kenttälä; Juha Tiensyrjä

AccessNets. Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers

Research Article

Supporting Session and Access Point Mobility in a Large Multi-provider Multi-vendor Municipal WiFi Network

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@INPROCEEDINGS{10.1007/978-3-642-04648-3_7,
    author={Timo Ojala and Toni Hakanen and Ossi Salmi and Mikko Kentt\aa{}l\aa{} and Juha Tiensyrj\aa{}},
    title={Supporting Session and Access Point Mobility in a Large Multi-provider Multi-vendor Municipal WiFi Network},
    proceedings={AccessNets. Third International Conference on Access Networks, AccessNets 2008, Las Vegas, NV, USA, October 15-17, 2008. Revised Papers},
    proceedings_a={ACCESSNETS},
    year={2012},
    month={5},
    keywords={municipal wireless network design mobility roaming handover},
    doi={10.1007/978-3-642-04648-3_7}
}

Timo Ojala
Toni Hakanen
Ossi Salmi
Mikko Kenttälä
Juha Tiensyrjä
Year: 2012
Supporting Session and Access Point Mobility in a Large Multi-provider Multi-vendor Municipal WiFi Network
ACCESSNETS
Springer
DOI: 10.1007/978-3-642-04648-3_7

Timo Ojala¹^,*, Toni Hakanen¹^,*, Ossi Salmi¹^,*, Mikko Kenttälä¹^,*, Juha Tiensyrjä¹^,*

1: University of Oulu

*Contact email: Timo.Ojala@ee.oulu.fi, Toni.Hakanen@ee.oulu.fi, Ossi.Salmi@ee.oulu.fi, Mikko.Kenttala@ee.oulu.fi, Juha.Tiensyrja@ee.oulu.fi

Abstract

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.

Keywords: municipal wireless network design mobility roaming handover

Published: 2012-05-11

: http://dx.doi.org/10.1007/978-3-642-04648-3_7