Dynamic Network Slicing for the Tactile Internet
Abstract – Tactile internet represents a network that can support real-time interactions between human operators and remote cyber-physical systems as if they were near to each other. For this, the network should support ultra-low latency communication, often referred to as the $1ms$ challenge. However, we observe that network requirements such as latency and bandwidth of tactile internet based cyber-physical systems or Tactile Cyber-Physical Systems (TCPS) are not static; they are widely fluctuating and time-varying. Therefore, for TCPS, static provisioning of network resources will be sub-optimal. For optimal utilization of network resources, we propose a mechanism to, per TCPS flow, dynamically create and switch network slices, based on the network resources needed at that time. Our solution consists of two main components. First, we develop a clustering algorithm to determine the slices and their specifications required to support a TCPS flow. Second, we leverage Software-Defined Networking (SDN) and P4-programmable switches to enable on-the-fly provisioning and switching of these slices.