Handover mechanism for mobility support in a remote real-time streaming
Internet-of-Things (IoT) system was proposed in this paper. The handover
mechanism serves to keep the connection between sensor nodes and a
gateway with a low latency. The handover mechanism also attentively
considers oscillating nodes which often occur in many streaming IoT
systems. By leveraging the strategic position of smart gateways and Fog
computing in a real-time streaming IoT system, sensor nodes' loads were
alleviated whereas advanced services, like push notification and local
data storage, were provided. The paper discussed and analyzed metrics
for the handover mechanism based on Wi-Fi. In addition, a complete
remote real-time health monitoring IoT system was implemented for
experiments. The results from evaluating our mobility handover mechanism
for mobility support shows that the latency of switching from one
gateway to another is 10%-50% less than other state-of-the-art mobility
support systems. The results show that the proposed handover mechanism
is a very promising approach for mobility support in both Fog computing
and IoT systems.