Literature Database Entry

gokhale2022vitals


Vineet Gokhale, Kees Kroep, R. Venkatesha Prasad, Boris Bellalta and Falko Dressler, "ViTaLS - A Novel Link-Layer Scheduling Framework for Tactile Internet over Wi-Fi," IEEE Internet of Things Journal, January 2023. (online first)


Abstract

The pioneering field of Tactile Internet (TI) will enable the transfer of human skills over long distances through haptic feedback. Realizing this demands a roundtrip latency of sub-5 ms. In this work, we investigate the capability of Wi-Fi 6 and existing TI scheduling/multiplexing schemes in meeting this stringent latency constraint. Taking the concrete example of the state-of-the-art Video-Haptic multiplexer (VH-multiplexer), we highlight the pitfalls of relying on the existing Wi-Fi 6 systems for TI communication. To circumvent this, we propose Video-Tactile Latency Scheduler (ViTaLS) - a novel link layer framework for tuning the video-tactile frame transmissions to suit their heterogeneous QoS requirements. We present a mathematical model to characterize the packet transmission duration of ViTaLS. Using a custom simulator, we validate our model and measure the objective performance improvement of ViTaLS over VH-multiplexer. We also present ViTaLS-optimal - a variant of ViTaLS, for further reducing the tactile latency. Objectively, we show that ViTaLS-optimal yields a latency improvement of up to 82 %. Based on experiments conducted on a real TI testbed, we subjectively demonstrate that ViTaLS-optimal outperforms the VH-multiplexer.

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Vineet Gokhale
Kees Kroep
R. Venkatesha Prasad
Boris Bellalta
Falko Dressler

BibTeX reference

@article{gokhale2022vitals,
    author = {Gokhale, Vineet and Kroep, Kees and Prasad, R. Venkatesha and Bellalta, Boris and Dressler, Falko},
    doi = {10.1109/JIOT.2023.3235433},
    note = {to appear},
    title = {{ViTaLS - A Novel Link-Layer Scheduling Framework for Tactile Internet over Wi-Fi}},
    journal = {IEEE Internet of Things Journal},
    issn = {2327-4662},
    publisher = {IEEE},
    month = {1},
    year = {2023},
   }
   
   

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