Vertical handoffs in wireless overlay networks
Mobile Networks and Applications - Special issue: mobile networking in the Internet
A review of vertical handoff decision algorithm in heterogeneous networks
Mobility '07 Proceedings of the 4th international conference on mobile technology, applications, and systems and the 1st international symposium on Computer human interaction in mobile technology
An overview of vertical handover decision strategies in heterogeneous wireless networks
Computer Communications
An Identifier-Based Architecture for Native Vertical Handover Support
AINA '10 Proceedings of the 2010 24th IEEE International Conference on Advanced Information Networking and Applications
Review: An overview of vertical handover techniques: Algorithms, protocols and tools
Computer Communications
An overview of IEEE 802.21: media-independent handover services
IEEE Wireless Communications
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The increasing popularity of portable devices such as netbooks and smartphones, along with the wide deployment of wireless technologies such as Wi-Fi, WiMAX and UMTS, make users demand for continuous connectivity. This demand requires not only being attached to a network, but possibly to the best performing one, or at least to a network able to fulfill the user requirements. In order to choose the best network among different alternatives, the IEEE 802.21 standard has been developed. In this paper we propose a Vertical Handover (VHO) strategy which considers the maximum data rate per user as one of the decision criteria. We evaluate our proposal by means of packet delivery latency, channel throughput, usage dwell-time, and VHO event latency, under different network conditions. We demonstrate that the IEEE 802.21 standard must be used to perform vertical handovers when taking context into account to make an accurate decision. Moreover, we show that considering only the technology availability is not always the best criteria to choose the candidate network to perform the handover.