Results 21 to 30 of about 72,437 (248)

Experimental Evaluation of Unicast and Multicast CoAP Group Communication

Sensors, 2016
The Internet of Things (IoT) is expanding rapidly to new domains in which embedded devices play a key role and gradually outnumber traditionally-connected devices. These devices are often constrained in their resources and are thus unable to run standard
Isam Ishaq, Jeroen Hoebeke, Ingrid Moerman, Piet Demeester   +3 more
doaj   +1 more source

Enhancements and Challenges in CoAP—A Survey

Sensors, 2020
The Internet of Engineering Task (IETF) developed a lighter application protocol (Constrained Application Protocol (CoAP)) for the constrained IoT devices operating in lossy environments.
Muhammad Ashar Tariq, Murad Khan, Muhammad Toaha Raza Khan, Dongkyun Kim   +3 more
doaj   +1 more source

A Mechanism for Reliable Mobility Management for Internet of Things Using CoAP

Sensors, 2017
Under unreliable constrained wireless networks for Internet of Things (IoT) environments, the loss of the signaling message may frequently occur. Mobile Internet Protocol version 6 (MIPv6) and its variants do not consider this situation. Consequently, as
Seung-Man Chun, Jong-Tae Park
doaj   +1 more source

Transparent CoAP Services to IoT Endpoints through ICN Operator Networks

Sensors, 2019
The Constrained Application Protocol (CoAP) is a specialized web transfer protocol which is intended to be used for constrained networks and devices.
Hasan Mahmood Aminul Islam, Dmitrij Lagutin, Antti Ylä-Jääski, Nikos Fotiou, Andrei Gurtov   +4 more
doaj   +1 more source

On the design of efficient congestion control for the Constrained Application Protocol in IoT

Computer Networks, 2022
The Constrained Application Protocol (CoAP) is one of the main candidates for a lightweight communication protocol for the Internet-of-Things. CoAP provides a simple congestion control mechanism based on successive retransmissions and binary exponential timeouts.
Makarem, Nabil, Bou Diab, Wafaa, Mougharbel, Imad, Malouch, Naceur   +3 more
openaire   +2 more sources

Improving Service Management in the Internet of Things

Sensors, 2012
In the Internet of Things (IoT) research arena, many efforts are devoted to adapt the existing IP standards to emerging IoT nodes. This is the direction followed by three Internet Engineering Task Force (IETF) Working Groups, which paved the way for ...
Antonio Iera, Chiara Sammarco
doaj   +1 more source

CoAP conformance testing based on TTCN-3

Tongxin xuebao, 2013
Protocol conformance test is of great importance in making sure that the protocol implementations conform to the protocol specification,thus helps protocol implementer to improve the implementations.CoAP (constrained application protocol) is a generic ...
Hong-qing DU, Xiao-hong HUANG, Jia-jie He   +2 more
doaj   +2 more sources

A Dynamic Power Tuning for the Constrained Application Protocol of Internet of Things [PDF]

2015 IEEE International Conference on Computer and Information Technology; Ubiquitous Computing and Communications; Dependable, Autonomic and Secure Computing; Pervasive Intelligence and Computing, 2015
Constrained application protocol (CoAP) has been designed for M2M and IoT applications. The resource directory (RD) in CoAP requires periodical updates by other nodes. However, a regular update process causes extra signaling overhead and drains the node's battery, which consequently reduces the battery lifetime of all nodes.
Mamoun Qasem, Ahmed Al‐Dubai, Imed, Romdhani, Muneer Bani Yassien   +4 more
openaire   +1 more source

Design and Implementation of a CoAP-Compliant Solution for RFID Inclusion in the Internet of Things

Journal of Sensor and Actuator Networks, 2016
Recent technological advancements allowed widening the applicability scope of the RFID (Radio Frequency Identification) technology from item identification to sensor-enabled computation platforms. This feature, added to the native radio energy-harvesting
Ivan Farris, Sara Pizzi, Antonella Molinaro, Antonio Iera   +3 more
doaj   +1 more source

Feasibility and Safety of Somato‐Cognitive Coordination Therapy for Cerebellar Ataxia Following Pediatric Brain Tumor Treatment

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Cerebellar ataxia after pediatric brain tumor treatment can cause persistent gait, balance, and speech impairment, yet no established rehabilitation strategy exists. Somato‐cognitive coordination therapy (SCCT) is a virtual reality–guided intervention designed to promote sensorimotor integration through visually constrained reaching
Masanobu Takeuchi, Takashi Matsuzawa, Jun Yamanishi, Masahiro Yoshitomi, Junji Ikeda, Shin‐Ichi Tsujimoto, Yasuteru Yamaguchi, Norio Shiba, Dhroov Pathare, Ayumi Kato, Masahiko Hara   +10 more
wiley   +1 more source