IEEE 802.21 enabled mobile terminals for optimized WLAN/3G handovers: a case study
ACM SIGMOBILE Mobile Computing and Communications Review
Implementation and performance study of IEEE 802.21 in integrated IEEE 802.11/802.16e networks
Computer Communications
Android Application Development: Programming with the Google SDK
Android Application Development: Programming with the Google SDK
IEEE 802.21: media independent handover: features, applicability, and realization
IEEE Communications Magazine
Towards a GNU/Linux IEEE 802.21 implementation
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
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The fast growing of mobile Internet users with the ability of using a wide diversity of access technologies such as Wi-Fi, WiMAX and UMTS/LTE, and the increasing proliferation of mobile devices with heterogeneous network interfaces, require versatile mobility mechanisms providing seamless roaming across those access technologies. Mobility agents such as Mobile IP and Fast MIPv6 are common, however, these solutions still have limitations when dealing with multiple link-layer technologies. In this context, the emerging standard IEEE 802.21 provides a framework which enables mobile agents and network operators to improve the handover process in heterogeneous networks. In this context, this paper presents and discusses the design and implementation of a mobility-aware solution for an Android device, using the IEEE 802.21 framework. A modified Android user terminal is proposed to improve the handover process, assuming a make-before-break approach. Resorting to an experimental testbed, the obtained results show that the proposed solution is an effective contribution to successfully accomplish seamless mobility of Android-based devices operating in 3G and Wi-Fi networks.