Results 31 to 40 of about 1,339 (176)
A Sleep-Awake Scheme Based on CoAP for Energy-Efficiency in Internet of Things
JOIV: International Journal on Informatics Visualization, 2017 Internet Engineering Task Force (IETF) have developed Constrained Application Protocol (CoAP) to enable communication between sensor or actuator nodes in constrained environments, such as small amount of memory, and low power. IETF CoAP and HTTP are used
Wenquan Jin, DoHyeun Kim
doaj +1 more source
A Performance Analysis of Internet of Things Networking Protocols: Evaluating MQTT, CoAP, OPC UA
Applied Sciences, 2021 IoT data exchange is supported today by different communication protocols and different protocolar frameworks, each of which with its own advantages and disadvantages, and often co-existing in a way that is mandated by vendor policies. Although different
Daniel Silva +3 more
doaj +1 more source
2011 IEEE Eighth International Conference on Mobile Ad-Hoc and Sensor Systems, 2011 Internet of Things devices will by and large be battery-operated, but existing application protocols have typically not been designed with power-efficiency in mind. In low-power wireless systems, power-efficiency is determined by the ability to maintain a low radio duty cycle: keeping the radio off as much as possible.
Kovatsch M., Duquennoy S., Dunkels A.
openaire +3 more sources
Performance Evaluation of CoAP and MQTT_SN in an IoT Environment
Proceedings, 2019 The fast growth of the Internet of Things (IoT) has made this technology one of the most promising paradigms of recent years. Wireless Sensor Networks (WSNs) are one of the most important challenges of the Internet of things.
Mónica Martí +2 more
doaj +1 more source
Critical Social Work, 2020 This paper outlines the development of the Transformative Consciousness (TC) of Oppression and Privilege (COAP) Scale created to address the conceptual and measurement limitations of the critical consciousness (CC) construct.
Alexis Jemal +2 more
doaj +1 more source
CoAP congestion control for the internet of things [PDF]
IEEE Communications Magazine, 2016 CoAP is a lightweight RESTful application layer protocol devised for the IoT. Operating on top of UDP, CoAP must handle congestion control by itself. The core CoAP specification defines a basic congestion control mechanism, but it is not capable of adapting to network conditions.
Betzler, August +3 more
openaire +3 more sources
A Lightweight Messaging Protocol for Internet of Things Devices
Technologies, 2022 The move towards intelligent systems has led to the evolution of IoT. This technological leap has over the past few years introduced significant improvements to various aspects of the human environment, such as health, commerce, transport, etc.
Justice Owusu Agyemang +4 more
doaj +1 more source
Is CoAP Congestion Safe? [PDF]
Proceedings of the Applied Networking Research Workshop, 2018 A huge number of Internet of Things (IoT) devices are expected to be connected to the Internet in the near future. The Constrained Application Protocol (CoAP) has been increasingly deployed for wide-area IoT communication. It is crucial to understand how the specified CoAP congestion control algorithms perform.
Järvinen, Ilpo Johannes +3 more
openaire +2 more sources
Sensors, 2015 In this paper, we present the design of a Constrained Application Protocol (CoAP) proxy able to interconnect Web applications based on Hypertext Transfer Protocol (HTTP) and WebSocket with CoAP based Wireless Sensor Networks. Sensor networks are commonly
Alessandro Ludovici, Anna Calveras
doaj +1 more source
Performance Evaluation of Video Streaming Application Over CoAP in IoT
IEEE Access, 2019 The Internet of Things (IoT) is considered a milestone for the realization of intelligent services through the interaction of smart things. Constrained application protocol (CoAP) was proposed by the Internet engineering task force as a web transfer ...
Waqas Ur Rahman +2 more
doaj +1 more source