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Agile Multi-PHY Wireless Networking

Abstract : This thesis contributes to the emerging field of agile multi-PHY wireless networking. Industrial wireless networks have relied on a single physical layer for their operation. One example is the standardized IETF 6TiSCH protocol stack for industrial wireless networking, which uses IEEE~802.15.4 O-QPSK radio in the 2.4~GHz band as its physical layer. Advances in radio chip manufacturing have resulted in chips that support a diverse set of long range and short range PHYs. We use the term ``PHY'' to refer to any combination of: modulation, frequency band, and coding scheme. In this research, we argue that combining long-range and short-range PHYs can offer balanced network end-to-end performance that no single PHY achieves. We demonstrate how a set of short-range and long-range PHYs can be integrated under one generalized 6TiSCH (``g6TiSCH'') architecture and we evaluate its performance experimentally in a testbed of 36~motes at Inria-Paris. We further demonstrate, experimentally, how a TSCH slotframe can adapt the slot duration on a slot-by-slot basis, as a function of the bitrate of the used PHY (``6DYN''). Finally, we design and evaluate, through simulation, an objective function for RPL that optimizes for network lifetime (``Life-OF''). We demonstrate how Life-OF combines diverse PHYs to boost network lifetime to be up to 470% compared to the IETF standard MRHOF.
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https://hal.inria.fr/tel-03541228
Contributor : Mina Rady Connect in order to contact the contributor
Submitted on : Monday, January 24, 2022 - 2:51:26 PM
Last modification on : Wednesday, June 8, 2022 - 12:50:04 PM
Long-term archiving on: : Monday, April 25, 2022 - 7:19:52 PM

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  • HAL Id : tel-03541228, version 1

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Mina Rady. Agile Multi-PHY Wireless Networking. Networking and Internet Architecture [cs.NI]. Sorbonne Université, 2021. English. ⟨tel-03541228⟩

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