E-Infrastuctures and E-Services for Developing Countries. Second International ICST Conference, AFRICOM 2010, Cape Town, South Africa, November 25-26, 2010, Revised Selected Papers

Research Article

Connecting Mobile Phones via Carrier-Grade Meshed Wireless Back-Haul Networks

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  • @INPROCEEDINGS{10.1007/978-3-642-23828-4_1,
        author={Mathias Kretschmer and Peter Hasse and Christian Niephaus and Thorsten Horstmann and Karl Jonas},
        title={Connecting Mobile Phones via Carrier-Grade Meshed Wireless Back-Haul Networks},
        proceedings={E-Infrastuctures and E-Services for Developing Countries. Second International ICST Conference, AFRICOM 2010, Cape Town, South Africa, November 25-26, 2010, Revised Selected Papers},
        proceedings_a={AFRICOMM},
        year={2012},
        month={5},
        keywords={},
        doi={10.1007/978-3-642-23828-4_1}
    }
    
  • Mathias Kretschmer
    Peter Hasse
    Christian Niephaus
    Thorsten Horstmann
    Karl Jonas
    Year: 2012
    Connecting Mobile Phones via Carrier-Grade Meshed Wireless Back-Haul Networks
    AFRICOMM
    Springer
    DOI: 10.1007/978-3-642-23828-4_1
Mathias Kretschmer1,*, Peter Hasse1,*, Christian Niephaus1,*, Thorsten Horstmann1,*, Karl Jonas1,*
  • 1: Fraunhofer FOKUS
*Contact email: mathias.kretschmer@fokus.fraunhofer.de, peter.hasse@fokus.fraunhofer.de, christian.niephaus@fokus.fraunhofer.de, thorsten.horstmann@fokus.fraunhofer.de, karl.jonas@fokus.fraunhofer.de

Abstract

Meshed wireless back-haul networks are seen as an affordable technology to bring Internet connectivity into rural and previously unconnected regions. To date, the main focus is to provide access to classical services such as theWWWor email. Access to such services requires the users to use a personal computer or a recent smart phone. Especially in developing regions, the prevailing end user device is a mobile phone. In order to connect mobile phones to an IP-based back-haul network, the network access points must provide a mobile phone air interface which is usually based on GSM or UMTS. In order to avoid dependence on a costly 3GPP infrastructure, we propose to deploy GSM or 3GPP nano cells in order to terminate the mobile phone protocols immediately at the mesh access points. Hence, the voice or data traffic can be carried over IP-based networks using open protocols such as SIP and RTP. In this paper we present a meshed wireless back-haul network with access points that have been equipped with GSM nano-cells. The voice traffic generated by the mobile phones is carried across the mesh in parallel to typical web or video traffic. In this paper we evaluate the QoS handling received by the voice calls across our multi-hop wireless testbed and show that our architecture can provide the resource isolation required to offer uninterrupted VoIP services in parallel to typical Internet traffic.