SDN Based Fast and Soft Handover (FSH) For a Shuttle Bus Monitoring System Shuttle buses are deployed on roads for public transportation. In order to track their location and guarantee high levels of safety, these vehicles communicate with a monitoring center through a vehicular network. This messages exchange requires a low latency communication, with no interruption and with a reduced packets loss. In this case, the mobility management should be studied carefully. This paper proposes a handover scheme (FSH) based on Software Defined Networking (SDN) technology. FSH provides a soft handover by adopting mobility anticipation and using both vehicle interfaces simultaneously. Moreover, FSH achieves control signaling overhead reduction and network congestion alleviation. The performance evaluation shows that our proposed algorithm reduces handover losses and end to end communication delays.

Mobility management solutions for 5G networks: Architecture and services Abstract   As the number of mobile users grows rapidly, wireless access technologies are evolving to provide high data rates to mobile users and to support emerging applications involving both human and machinetype communications. In this context, 5G is considered as a solution to provide wireless users with high coverage and increased network capacity, by enabling the integration of heterogeneous networks, that may have different wireless access technologies, coverage area sizes and topologies. Within such a setting, a user or a device may find more than one candidate air interfaces to connect or to perform a handover; this further highlights the need for optimum connectivity and seamless mobility in heterogeneous networks to also address the requirements of the emerging 5G vertical use cases in different sectors such as autonomic cars, industrial robotics, Internet of Things etc. In this article, a concise overview of the trends in mobility management will be provided considering the emerging 5G architectures and service types (eMBB, mMTC, URLLC). Specific approaches of vertical handover in 5G are described, considering the novel architectural changes imposed by Software defined Networking (SDN), Network Function Virtualization (NFV) and MultiAccess Edge Computing (MEC). In addition, the paper will address mobility management evolutionary steps in signaling based on the novel architectural elements imposed by SDN, NFV and MEC, considering the requirements of different vertical use cases that will lead to the required throughput, latency, and scalability.