Renovating road signs for infrastructure-to-vehicle networking

Wang, Purui; Feng, Lilei; Chen, Guojun; Xu, Chenren; Wu, Yue; Xu, Kenuo; Shen, Guobin; Du, Kuntai; Huang, Gang; Liu, Xuanzhe

doi:10.1145/3372224.3380883

Cited by 43 publications

(18 citation statements)

References 38 publications

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“…infrastructure communication. For example, RetroI2V [10] enables infrastructure-to-vehicle communication between road signs and cars. However, compared to drones, cars have a much larger body and smooth motions.…”

Section: B State-of-the-art Studiesmentioning

confidence: 99%

“…Our work is inspired by pioneering contributions in the area of backscattering communication with light (BCL), where bi-directional links are established between LEDs and tags. Those studies, however, establish links between static points [7], [8], or between a mobile point (person or car) and reflective tags [9], [10]. These scenarios have either zero-or one-degree of freedom, which allows maintaining a more stable link.…”

Section: Introductionmentioning

confidence: 99%

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DroneVLC: Exploiting Drones and VLC to Gather Data from Batteryless Sensors

Groot

Zamalloa

2023

2023 IEEE International Conference on Pervasive Computing and Communications (PerCom)

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We explore a new alternative for drones to gather information from sensors. Instead of using the traditional radiofrequency spectrum, whose broadcast nature makes it more difficult to poll specific objects, we utilize the light spectrum. In our system, the drone carries a light, and flies to an area that it is interested in polling. Only the sensor (tag) under the coverage of the light sends data back by backscattering the impinging light waves. Enabling this system poses two challenges. First, a reliable modulation method with light is required. The method must overcome noise dynamics introduced by the drone (mechanical oscillations), the object (backscattering effects) and the environment (interference from ambient light). Second, to facilitate the deployment of tags in pervasive applications, the design of the tag should be battery-less and have a small surface area. These requirements limit the amount of power available for reception, transmission and sensing, since the energy harvested by solar cells is proportional to their surface area. Regarding the first challenge, we show that the amplitude-based modulation methods used in state-of-the-art studies do not work in our scenario, and investigate instead a frequency-based approach. For the second challenge, we optimize the computation, reception and transmission of the tag to create a battery-less design that operates with frequency-modulated signals generated from light. We build a prototype for the drone and the tag, and test them under different lighting scenarios: dark, indoors, and outdoors with sunlight. The results show that, under standard indoor lighting, our system can attain a polling range of 1.1 m with a data rate of 120 bps, while the tag operates with small solar cells and consumes less than 1 mW.

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Section: B State-of-the-art Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

DroneVLC: Exploiting Drones and VLC to Gather Data from Batteryless Sensors

Groot

Zamalloa

2023

2023 IEEE International Conference on Pervasive Computing and Communications (PerCom)

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“…Given the more complex nature of passive communication, researchers have only make some inroads into the problem. There are two main lines of work in the literature: Retro-VLC/RetroI2V [8,22,26] and sunlight communication [2,3,23], as summarized in Table 2. Retro-VLC creates a bidirectional link between an active light source and a surface (object).…”

Section: System Architecture and Applicationsmentioning

confidence: 99%

“…Retro-VLC creates a bidirectional link between an active light source and a surface (object). Both of these [16] Passive object -Battery-free IoT [8,26] -Infrastructure-to-vehicle networking system [22] -Object identification [23] -Battery-free IoT [2,3,23] -Inter-building networking [3] elements have a photodiode. For the downlink, the active light transmits information to the surface with traditional VLC.…”

Section: System Architecture and Applicationsmentioning

confidence: 99%

“…Passive communication with radio. In passive visible light communication systems, light is modulated by reflective surfaces [2,23] or LCD shutters [3,8,22,26]. These concepts are mainly inspired by backscatter communication where passive tags modulate the electromagnetic waves emitted by external sources, traditionally used in RFID [25] and recently applied to other radio technologies, e.g.…”

Section: Related Techniquesmentioning

confidence: 99%

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Passive visible light networks

Wang

Zúñiga

2020

Proceedings of the Workshop on Light Up the IoT

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Artificial lighting has been used mainly for illumination for more than a century. Only recently, we have started to transform our lighting infrastructure to provide new services such as sensing and communication. These advancements have two key requirements: the ability to modulate light sources (for data transmission) and the presence of photodetectors on objects (for data reception). These requirements assume that the system has direct control over the transmitter and receiver, as in any traditional communication system. But not all lights can be modulated, and most objects do not have photodetectors. To overcome these limitations, researchers are developing novel networks that (i) exploit passive light sources that cannot be directly modulated, such as the sun, and (ii) leverage reflections from the external surfaces of objects to create a new generation of sensing and communication networks with visible light that is sustainable and does not require active control over the system. In this survey, we propose a taxonomy to analyze state-of-the-art contributions. We also identify the overarching principles, challenges, and opportunities of this new rising area.

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RetroFlex: enabling intuitive human–robot collaboration with flexible retroreflective tags

Chen

et al. 2022

CCF Trans. Pervasive Comp. Interact.

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Renovating road signs for infrastructure-to-vehicle networking

Cited by 43 publications

References 38 publications

DroneVLC: Exploiting Drones and VLC to Gather Data from Batteryless Sensors

DroneVLC: Exploiting Drones and VLC to Gather Data from Batteryless Sensors

Passive visible light networks

RetroFlex: enabling intuitive human–robot collaboration with flexible retroreflective tags

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