Experimental QoS Optimization for Haptic Communication Over Tactile Internet

So far, most haptic applications are standalone systems or endeavors to provide collaborated haptic virtual environments. With the emergence of the Tactile Internet (TI), ultra-low-delay and ultra-high-reliable communications will enable a paradigm shift from traditional content-oriented communication to control-oriented communication. Specifically, The human-in-the-loop Tactile Internet enables the vision of delivering human skills e.g, feeling and manipulating, in addition to the human knowledge e.g., seeing and hearing, remotely, adding more life to the Internet of skills. Within this paradigm, human multisensory information for interaction and communication with the remote environment needs to be exchanged. In this paper, we present an experimental study to optimize objective quality evaluation for multimodal communication especially haptic, over the Internet. For that purpose, a simulated haptic model based on the ALPHAN protocol was implemented on Riverbed modular to generate real haptic traffics over an infrastructure that mimics the TI, the model was used to select appropriate Diffserv QoS solutions in a large-scale collaborated haptic environment. The outcome of the study found that deploying custom queuing with low latency queue (LLQ) or Priority Queuing (PQ) in conjunction with ALPHAN protocol can be used to dramatically enhance the network performance of haptic communication.

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