Scalable IoT Sensing Systems With Dynamic Sinks

A sink is a node in a sensor network that functions as a gateway and it gathers data from other nodes and sends the data over the Internet for further processing. However, a single sink cannot meet the demands of a sensor network for the Internet of Things (IoT) with heavy traffic. Although deployin...

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Bibliographic Details
Published in:IEEE internet of things journal 2022-05, Vol.9 (10), p.7211-7227
Main Authors: Tanyingyong, Voravit, Olsson, Robert, Hidell, Markus, Sjodin, Peter
Format: Article
Language:English
Subjects:
Batteries
Computer networks
Energy consumption
Gateways
Information and Communication Technology
Informations- och kommunikationsteknik
Internet of Things
Internet of Things (IoT)
Measurement
Optimization
Optimization techniques
Real-time systems
Scalability
Sensor systems and applications
Sensors
Traffic congestion
Uplink
Wireless sensor networks
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Summary:A sink is a node in a sensor network that functions as a gateway and it gathers data from other nodes and sends the data over the Internet for further processing. However, a single sink cannot meet the demands of a sensor network for the Internet of Things (IoT) with heavy traffic. Although deploying multiple sinks can improve scalability and mitigate bottleneck problems, it is still challenging to use multiple sinks while keeping energy consumption down. Previous studies have addressed this issue using optimization techniques based on the assumption that the network converges to a steady state in terms of traffic load. We take a practical approach based on real-time changes in traffic load. This work introduces the concept of dynamic sinks , a sensor device that can serve as an on-demand sink. We identify suitable metrics for decision mechanisms to activate/deactivate dynamic sinks and investigate three decision schemes, namely, autonomous , delegated , and centralized schemes. We also develop a protocol to disseminate the decisions. As a proof-of-concept, the dynamic sink protocol is implemented in Contiki. We evaluate tradeoffs between the packet delivery ratio (PDR) and energy consumption using emulated devices in the Cooja network simulator. The results show that setups with dynamic sinks can reduce energy consumption considerably at the expense of slightly lower PDR when compared to a setup with multiple permanent sinks.
ISSN:2327-4662
2327-4662
DOI:10.1109/JIOT.2021.3094275