Virtualized Control over Fog: Interplay Between Reliability and Latency

Understand

This paper introduces an analytical framework to investigate optimal design choices for the placement of virtual controllers along the cloud-to-things continuum.

• The main application scenarios include low-latency cyber-physical systems in which real-time control actions are required in response to the changes in states of an IoT node.
• In such cases, deploying controller software on a cloud server is often not tolerable due to delay from the network edge to the cloud.
• Hence, it is desirable to trade reliability with latency by moving controller logic closer to the network edge.