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arxiv: 2404.14333 · v1 · submitted 2024-04-22 · 💻 cs.NI · cs.ET

DE-LIoT: The Data-Energy Networking Paradigm for Sustainable Light-Based Internet of Things

Pith reviewed 2026-05-24 02:28 UTC · model grok-4.3

classification 💻 cs.NI cs.ET
keywords Visible Light CommunicationEnergy HarvestingInternet of ThingsData-Energy NetworkingSustainable IoTVLC-based WPANsNode Lifetime Extension
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The pith

The DE-LIoT architecture enables sustainable VLC-based IoT by using dense nodes and central control for simultaneous data and energy transfer.

A machine-rendered reading of the paper's core claim, the machinery that carries it, and where it could break.

This paper proposes DE-LIoT as a new networking model for light-based IoT that integrates visible light communication for both data exchange and energy harvesting. It counters channel instability and energy waste in standard setups by deploying many nodes under one controller that tracks energy states and coordinates transfers. The design targets long-term autonomy for resource-limited indoor devices without constant external power. Real hardware tests confirm the approach delivers measurable lifetime gains for the nodes.

Core claim

The paper establishes that a Data-Energy Networking paradigm in VLC-based wireless personal area networks achieves practical sustainability by letting densely distributed, energy-state-aware nodes exchange both information and power under centralized control, overcoming conventional limits on harvesting efficiency and storage.

What carries the argument

The DE-LIoT architecture of densely distributed nodes managed by a central controller for simultaneous data and energy network operation with energy-state awareness.

If this is right

  • Resource-limited IoT nodes achieve extended operational lifetimes through coordinated energy exchange.
  • Excess energy that would otherwise go to waste is redirected by matching harvest rates to actual storage needs.
  • VLC channels support more stable combined data and power delivery when managed centrally.
  • Indoor WPANs reach higher overall resource efficiency without added batteries or frequent maintenance.

Where Pith is reading between the lines

These are editorial extensions of the paper, not claims the author makes directly.

  • The model could integrate with existing indoor lighting fixtures to lower the cost of new IoT deployments.
  • Performance in very large spaces may require multiple coordinated controllers rather than one.
  • Similar joint data-energy ideas might be tested in other wireless bands where energy transfer is feasible.

Load-bearing premise

That a central controller and dense node placement can maintain reliable simultaneous data and energy links despite line-of-sight requirements and indoor movements.

What would settle it

A hardware experiment where node lifetimes show no improvement or decline under realistic indoor movement patterns that repeatedly break line-of-sight paths.

Figures

Figures reproduced from arXiv: 2404.14333 by Amila Perera, Marcos Katz, Roshan Godaliyadda.

Figure 1
Figure 1. Figure 1: Essential components and typical use case scenario for DE-LIoT. [PITH_FULL_IMAGE:figures/full_fig_p005_1.png] view at source ↗
Figure 2
Figure 2. Figure 2: After the OAP prioritises a SSN under low illumination or poor VLC channel conditions, the [PITH_FULL_IMAGE:figures/full_fig_p007_2.png] view at source ↗
Figure 3
Figure 3. Figure 3: Variations in internal ES voltage occur with different time parameters for PSN. [PITH_FULL_IMAGE:figures/full_fig_p008_3.png] view at source ↗
Figure 4
Figure 4. Figure 4: The structure of the DE-LIoT optical access point, capable of performing both indoor illumination [PITH_FULL_IMAGE:figures/full_fig_p009_4.png] view at source ↗
Figure 5
Figure 5. Figure 5: Structure of DE-LIoT node with energy harvesting unit, along with sensing, processing, and [PITH_FULL_IMAGE:figures/full_fig_p010_5.png] view at source ↗
Figure 6
Figure 6. Figure 6: The proposed communication data frame structure for the DE-LIoT network, based on the PHY [PITH_FULL_IMAGE:figures/full_fig_p015_6.png] view at source ↗
Figure 7
Figure 7. Figure 7: Data frame structure used in the prototype network, where advertisements and data are fused [PITH_FULL_IMAGE:figures/full_fig_p016_7.png] view at source ↗
Figure 8
Figure 8. Figure 8: Circuit diagram of the implemented prototype OAP, with two Arduino Nano boards for simultaneous [PITH_FULL_IMAGE:figures/full_fig_p018_8.png] view at source ↗
Figure 9
Figure 9. Figure 9: The algorithm used in the implemented prototype OAP. [PITH_FULL_IMAGE:figures/full_fig_p019_9.png] view at source ↗
Figure 10
Figure 10. Figure 10: The diagram of implemented EHU. 19 [PITH_FULL_IMAGE:figures/full_fig_p019_10.png] view at source ↗
Figure 11
Figure 11. Figure 11: The circuit diagram of implemented DE-LIoT node. [PITH_FULL_IMAGE:figures/full_fig_p020_11.png] view at source ↗
Figure 12
Figure 12. Figure 12: The simplified algorithm of the implemented prototype DE-LIoT node. [PITH_FULL_IMAGE:figures/full_fig_p021_12.png] view at source ↗
Figure 13
Figure 13. Figure 13: View of the implemented DE-LIoT prototypes: a) OAP transmitter LED array and receriver; b) [PITH_FULL_IMAGE:figures/full_fig_p022_13.png] view at source ↗
Figure 14
Figure 14. Figure 14: Average power consumption of the functions compared to the power generation of a single OPV [PITH_FULL_IMAGE:figures/full_fig_p023_14.png] view at source ↗
Figure 15
Figure 15. Figure 15: The impact of node-node ETX for OAP-node communication link. [PITH_FULL_IMAGE:figures/full_fig_p024_15.png] view at source ↗
Figure 16
Figure 16. Figure 16: Variation of duty cycle and standby time with [PITH_FULL_IMAGE:figures/full_fig_p025_16.png] view at source ↗
Figure 17
Figure 17. Figure 17: The graph clearly demonstrates that the OAP illumination effectively covered the majority of [PITH_FULL_IMAGE:figures/full_fig_p025_17.png] view at source ↗
Figure 18
Figure 18. Figure 18: Variation in average recharge time for harvesting 1000 mJ of excess energy across different [PITH_FULL_IMAGE:figures/full_fig_p026_18.png] view at source ↗
Figure 19
Figure 19. Figure 19: The positioning of prototype PSNs represented by Node 1 and Node 3 (PSNs), along with the [PITH_FULL_IMAGE:figures/full_fig_p027_19.png] view at source ↗
Figure 20
Figure 20. Figure 20: The received capacitor voltages and sensed values from prototype DE-LIoT nodes are presented [PITH_FULL_IMAGE:figures/full_fig_p027_20.png] view at source ↗
Figure 21
Figure 21. Figure 21: The variation in SSN VCap and total internal energy during the enabled ETX mode over a 60-hour interval. 3.2V (VOVDIS) is considered as the minimum voltage threshold to determine ES depletion. SSN remained constant, as the channel conditions were static throughout the duration of the experiment. As shown in Figure 20a , in the absence of ETX, the SSN could only sustain operation for 8 hours. Notably, the … view at source ↗
Figure 22
Figure 22. Figure 22: The lux level variation experienced by the SSN during [PITH_FULL_IMAGE:figures/full_fig_p029_22.png] view at source ↗
read the original abstract

The growing demand for Internet of Things (IoT) networks has sparked interest in sustainable, zero-energy designs through Energy Harvesting (EH) to extend the lifespans of IoT sensors. Visible Light Communication (VLC) is particularly promising, integrating signal transmission with optical power harvesting to enable both data exchange and energy transfer in indoor network nodes. VLC indoor channels, however, can be unstable due to their line-of-sight nature and indoor movements. In conventional EH-based IoT networks, maximum Energy Storage (ES) capacity might halt further harvesting or waste excess energy, leading to resource inefficiency. Addressing these issues, this paper proposes a novel VLC-based WPANs concept that enhances both data and energy harvesting efficiency. The architecture employs densely distributed nodes and a central controller for simultaneous data and energy network operation, ensuring efficient energy exchange and resource optimisation. This approach, with centralised control and energy-state-aware nodes, aims for long-term energy autonomy. The feasibility of the Data-Energy Networking-enabled Light-based Internet of Things (DE-LIoT) concept is validated through real hardware implementation, demonstrating its sustainability and practical applicability. Results show significant improvements in the lifetime of resource-limited nodes, confirming the effectiveness of this new data and energy networking model in enhancing sustainability and resource optimisation in VLC-based WPANs.

Editorial analysis

A structured set of objections, weighed in public.

Desk editor's note, referee report, simulated authors' rebuttal, and a circularity audit. Tearing a paper down is the easy half of reading it; the pith above is the substance, this is the friction.

Referee Report

2 major / 2 minor

Summary. The paper proposes the DE-LIoT architecture for VLC-based WPANs, employing densely distributed nodes and a central controller to enable simultaneous data and energy networking for long-term energy autonomy in IoT sensors. It claims that this approach addresses VLC channel instability and energy storage inefficiencies, with feasibility validated through real hardware implementation demonstrating significant lifetime improvements for resource-limited nodes.

Significance. If the hardware results hold with proper quantification, the work could advance sustainable IoT designs by integrating data and energy transfer in VLC, offering a practical alternative to conventional EH systems through centralized energy-state-aware scheduling. The emphasis on dense nodes and resource optimization addresses a relevant gap in indoor network sustainability.

major comments (2)
  1. [Abstract] Abstract: The central claim that feasibility is validated through real hardware implementation with 'significant improvements in the lifetime of resource-limited nodes' supplies no quantitative metrics, baselines, error bars, or exclusion criteria, rendering the result uninspectable and load-bearing for the paper's contribution.
  2. [Abstract] Abstract: VLC indoor channels are explicitly described as unstable due to LOS requirements and indoor movements, yet the architecture's reliance on a central controller for reliable simultaneous data/energy transfer lacks any reported mobility traces, outage statistics, or multi-node coordination details under movement, so the claimed transfer to indoor WPAN scenarios is not supported by the described experiments.
minor comments (2)
  1. Clarify notation for energy-state-aware nodes and DE-LIoT components to ensure consistency between abstract and main text.
  2. Add references to prior VLC-EH work for context on the novelty of the data-energy networking paradigm.

Simulated Author's Rebuttal

2 responses · 0 unresolved

We thank the referee for the constructive comments on our manuscript. We address each major comment point-by-point below and indicate planned revisions.

read point-by-point responses
  1. Referee: [Abstract] Abstract: The central claim that feasibility is validated through real hardware implementation with 'significant improvements in the lifetime of resource-limited nodes' supplies no quantitative metrics, baselines, error bars, or exclusion criteria, rendering the result uninspectable and load-bearing for the paper's contribution.

    Authors: We agree that the abstract should include quantitative metrics to substantiate the claim. The full manuscript reports hardware results with specific lifetime extensions (including baselines and variability measures), but these were summarized only qualitatively in the abstract. We will revise the abstract to incorporate the key numerical outcomes, baselines, and error information from the experiments. revision: yes

  2. Referee: [Abstract] Abstract: VLC indoor channels are explicitly described as unstable due to LOS requirements and indoor movements, yet the architecture's reliance on a central controller for reliable simultaneous data/energy transfer lacks any reported mobility traces, outage statistics, or multi-node coordination details under movement, so the claimed transfer to indoor WPAN scenarios is not supported by the described experiments.

    Authors: The manuscript notes VLC channel instability due to LOS and movements. The hardware validation demonstrates the core centralized data-energy networking and energy-state-aware scheduling in controlled static conditions to establish feasibility. We acknowledge that mobility traces, outage statistics, and dynamic multi-node coordination are not reported. We will revise to explicitly state this scope limitation and add discussion on how the central controller design supports adaptation, while noting dynamic scenarios as future work. revision: partial

Circularity Check

0 steps flagged

No circularity: architectural proposal validated by hardware implementation, no derivation chain present.

full rationale

The paper advances a conceptual architecture for DE-LIoT using VLC for simultaneous data/energy transfer via dense nodes and a central controller. Its core claim is empirical feasibility shown via real hardware tests that report extended node lifetimes. No equations, fitted parameters, predictions derived from inputs, or self-citation chains appear in the abstract or described structure. The work is self-contained as an implementation-driven proposal rather than a mathematical derivation that could reduce to its own definitions or fits. External benchmarks (hardware results) stand independent of any internal redefinition.

Axiom & Free-Parameter Ledger

0 free parameters · 1 axioms · 1 invented entities

The central claim rests on the domain assumption that VLC links remain usable for simultaneous data and power under movement, plus the invented DE-LIoT control architecture whose performance is asserted via hardware without independent benchmarks shown in the abstract.

axioms (1)
  • domain assumption VLC indoor channels can support simultaneous data transmission and optical power harvesting despite line-of-sight constraints and movements when nodes are densely deployed and centrally coordinated.
    Invoked to justify the architecture's ability to achieve long-term energy autonomy.
invented entities (1)
  • DE-LIoT architecture with central controller and energy-state-aware nodes no independent evidence
    purpose: To enable efficient simultaneous data and energy exchange and resource optimisation for long-term autonomy.
    New named system introduced in the paper; no independent evidence outside the claimed hardware test is provided in the abstract.

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