Let Opportunistic Crowdsensors Work Together for Resource-efficient, Quality-aware Observations

Yifan Du 1 Francoise Sailhan 2 Valerie Issarny 1
2 CEDRIC - ROC - CEDRIC. Réseaux et Objets Connectés
CEDRIC - Centre d'études et de recherche en informatique et communications
Abstract : Opportunistic crowdsensing empowers citizens carrying hand-held devices to sense physical phenomena of common interest at a large and fine-grained scale without requiring the citizens' active involvement. However, the resulting uncontrolled collection and upload of the massive amount of contributed raw data incur significant resource consumption, from the end device to the server, as well as challenge the quality of the collected observations. This paper tackles both challenges raised by opportunistic crowdsensing, that is, enabling the resource-efficient gathering of relevant observations. To achieve so, we introduce the BeTogether middleware fostering context-aware, collaborative crowdsensing at the edge so that co-located crowdsensors operating in the same context, group together to share the work load in a cost- and quality-effective way. We evaluate the proposed solution using an implementation-driven evaluation that leverages a dataset embedding nearly 1 million entries contributed by 550 crowdsensors over a year. Results show that BeTogether increases the quality of the collected data while reducing the overall resource cost compared to the cloud-centric approach.
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https://hal.archives-ouvertes.fr/hal-02463610
Contributor : Yifan Du <>
Submitted on : Saturday, February 1, 2020 - 12:03:41 PM
Last modification on : Friday, February 7, 2020 - 1:25:47 AM

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  • HAL Id : hal-02463610, version 1

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Yifan Du, Francoise Sailhan, Valerie Issarny. Let Opportunistic Crowdsensors Work Together for Resource-efficient, Quality-aware Observations. PerCom 2020: IEEE International Conference on Pervasive Computing and Communications, Mar 2020, Austin, United States. ⟨hal-02463610⟩

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