Dynamic Aggregation and Scheduling in CoAP/Observe-Based Wireless Sensor Networks

Correia, N.; Sacramento, David; Schütz, G.

doi:10.1109/jiot.2016.2517120

Cited by 32 publications

(31 citation statements)

References 14 publications

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“…Ketema et al [20] proposed using new CoAP options to define different criteria for notification generation; Mietz et al [21] propose a new High-Level State Option to give semantic meaning to the values, e.g., cold and warm for temperature values; Tanganelli et al [22] limit the number of notifications using proxies to optimize notification periods, also enabling resource-constrained devices to handle many subscribers and Ludovici et al [23] propose to specify QoS parameters with priorities for the notifications. In [24], [25] and [26], the authors propose a framework for planning registration states to aggregate and schedule the notification-sending process, using timeliness fairness to that schedule, and finally add a heuristic algorithm to improve the registration steps. Ishaq et al [27] propose an entity named Entity Manager to improve the interaction of CoAP's Observe and Group extensions, aggregating the notifications while Choi et al [28] propose to use a clustering approach, grouping the sensors in clusters and using one as the head.…”

Section: B Coap Observe Enhancementsmentioning

confidence: 99%

Integrating Electrical Substations Within the IoT Using IEC 61850, CoAP, and CBOR

Iglesias-Urkia

Casado-Mansilla²,

Mayer

et al. 2019

IEEE Internet Things J.

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Electrical substations are crucial elements of Smart Grids where they are mainly responsible for voltage transformations. However, due to the integration of distributed energy resources in the grid, substations now have to provide additional grid management capabilities which in turn require supervision and automation solutions for large low-voltage grids. A recurring challenge in such deployments are siloed systems that are due to non-interoperable communication protocols across substations: although most substations' communication is based on the International Electrotechnical Commission (IEC) 61850 standard, deployed legacy protocols lag behind modern communication technologies in terms of performance, hindering the full transition to lightweight protocols. This paper demonstrates that IEC 61850 can be fully mapped to the Constrained Application Protocol (CoAP) in combination with the Concise Binary Object Representation (CBOR) format while improving system performance compared to existing alternatives (e.g. WS-SOAP and HTTP). On average, CoAP+CBOR needs 44% and 18% of the message size and 71% and 85% of the time compared to systems based on HTTP and WS-* Web Services, respectively-this is especially relevant for resource-constrained devices and networks in electrical grids. In addition, CoAP is based on the Representational State Transfer (REST) architectural style, which supports system integration and interoperability through uniform identification and interaction. This approach fosters the standard-compliant integration of legacy platforms with modern substations as well as current IoT systems in neighboring domains such as building management and infrastructure automation systems.

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Section: B Coap Observe Enhancementsmentioning

confidence: 99%

Integrating Electrical Substations Within the IoT Using IEC 61850, CoAP, and CBOR

Iglesias-Urkia

Casado-Mansilla²,

Mayer

et al. 2019

IEEE Internet Things J.

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“…The authors also proposed a header compression scheme and the results of the proposed scheme gains in terms of processing time, energy consumption and packet size. Correia et al (2016) proposed a new holistic framework for the planning of registration steps in CoAP/observer-based wireless sensor networks which are able to reduce the energy consumption and average load in the M2M nodes. In IoT, there is a high demand for home automation systems, time synchronisation techniques for low power sensor modules.…”

Section: Related Workmentioning

confidence: 99%

Performance evaluation on internet of things protocols to identify a suitable one for millions of tiny internet nodes

Raja¹,

Sampradeepraj²,

Prasanth³

2019

IJIITC

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Recent days throughout the world, cities are facing challenges such as population, crimes, transportation, job opportunities, economic growth, environmental sustainability, waste management, traffic flow and energy consumption. In India, many cities are facing many serious issues in the form of air pollution. Considering the above challenges, many cities are spending on information and communication technology to make a sustainable environment which is necessary for the mankind. Internet of things (IoT) has been focused as a growing technology for solving the above social problems and to make a city as smart. Smart cities have been viewed to integrate multiple information and communication technology solutions to enhance efficiency and economical value. Many IoT protocols like low power wireless personal area networks (6LoWPAN), message queue telemetry transport (MQTT), constrained application protocol (CoAP), extensible messaging and presence protocol (XMPP), routing protocol for low power and lossy networks (RPL) and ZigBee protocol are used to make a smart environment. Billions of tiny devices are connected together to make a smart platform. In this paper, IoT protocols that can be suited for smart environments are implemented to find the suitable protocol for connecting millions of tiny internet nodes.

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“…They propose to take into account fairness on registration steps, planning data forwarding through proxies in a way that registration steps impose equity among the nodes. In [4], the authors continue the work on [19] and [5] and add a heuristic approach for developing the algorithm to make the decisions on the registration steps of observers.…”

Section: Other Proposalsmentioning

confidence: 99%

Enhanced publish/subscribe in CoAP

Iglesias-Urkia

Casado-Mansilla

Mayer

et al. 2018

Proceedings of the 8th International Conference on the Internet of Things

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In the current Internet of Things (IoT) all sorts of devices and objects with diverse capabilities are being connected to the Internet and the Web. Consequently, new lightweight network protocols are also being developed to connect resourceconstrained devices or networks with each other. One of these protocols is the Constrained Application Protocol, which provides a REST architecture to resource and network-constrained devices. Besides the RESTful client-server paradigm, CoAP supports a publish-subscribe model thanks to its Observe extension which mimics some of MQTT's functionalities. However, this extension has some limitations in the subscription mechanism. Hence, this paper proposes several enhancements that define new CoAP options and response codes for such mechanisms. Furthermore, a theoretical comparison of the current CoAP capabilities against the new possibilities is also provided. For that, an specific use case is proposed, and a comparison in terms of the overhead required to exchange payloads and to subscribe to state change notifications on resources.

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Dynamic Aggregation and Scheduling in CoAP/Observe-Based Wireless Sensor Networks

Cited by 32 publications

References 14 publications

Integrating Electrical Substations Within the IoT Using IEC 61850, CoAP, and CBOR

Integrating Electrical Substations Within the IoT Using IEC 61850, CoAP, and CBOR

Performance evaluation on internet of things protocols to identify a suitable one for millions of tiny internet nodes

Enhanced publish/subscribe in CoAP

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