Results 11 to 20 of about 3,173,083 (292)

Embedding Trust in the Media Access Control Protocol for Wireless Networks [PDF]

open access: yesSensors
IEEE 802.11 is one of the most common medium access control (MAC) protocols used in wireless networks. The carrier sense multiple access with collision avoidance (CSMA/CA) mechanisms in 802.11 have been designed under the assumption that all nodes in the
Chaminda Alocious   +3 more
doaj   +2 more sources

Narrowband Internet of Things (NB-IoT): From Physical (PHY) and Media Access Control (MAC) Layers Perspectives [PDF]

open access: yesSensors, 2019
Narrowband internet of things (NB-IoT) is a recent cellular radio access technology based on Long-Term Evolution (LTE) introduced by Third-Generation Partnership Project (3GPP) for Low-Power Wide-Area Networks (LPWAN).
Collins Burton Mwakwata   +5 more
doaj   +2 more sources

Transmission Control Considering Different Available Channels for CRDSA/IRSA in Satellite IoT Systems

open access: yesIEEE Access, 2023
In satellite Internet-of-Things (IoT) systems using the 920-MHz band Low Power Wide Area, available channels for each terminal are limited to avoid interference with terrestrial networks. Since this limitation depends on the location of the terminal, the
Kansuke Kumazawa   +7 more
doaj   +1 more source

Distributed Load Control Using Reliable Low-Data-Rate Power Line Communication

open access: yesIEEE Access, 2022
Many demand-response schemes fail because they inconvenience consumers or add unnecessary costs. When participating in a typical demand-response scheme, a consumer may be subjected to invasive control systems, communication systems, or data collection ...
Adedayo O. Aderibole   +3 more
doaj   +1 more source

OFDMA Based QoS-Oriented Guarantee Novelty Multiple Access Protocol [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
The next generation wireless local area network (WLAN) 802.11ax standards committee takes high quality of service(QoS) guarantee as one of important technology goals of the next generation WLAN.

doaj   +1 more source

Spatial Clustering Group Based OFDMA Access Protocol for the Next Generation WLAN [PDF]

open access: yesXibei Gongye Daxue Xuebao, 2018
The next generation wireless local area network (WLAN) needs to significantly improve the area throughput in high dense scenario. Orthogonal Frequency Division Multiple Access (OFDMA), considered as the key technology of next generation WLAN, has been ...

doaj   +1 more source

FD-OMAC: A Novel Full-Duplex Optical Media Access Control for IEEE 802.15.7

open access: yesIEEE Access, 2021
Optical wireless communication (OWC), the IEEE 802.15.7 standard (revised 2018) is developed in normative reference to low-rate wireless personal area networks IEEE 802.15.4 standard.
Anjali Gupta   +3 more
doaj   +1 more source

Open access monographs: a humanities research perspective [PDF]

open access: yes, 2014
This article discusses the thoughts of a humanities researcher in relation to open access (OA) publishing. Digital media have dramatically improved access to historic texts but library e-books are frustrating due to software and loan arrangements ...
Cheshire, Jim
core   +2 more sources

An Efficient Scalable Scheduling MAC Protocol for Underwater Sensor Networks

open access: yesSensors, 2018
Underwater Sensor Networks (UWSNs) utilise acoustic waves with comparatively lower loss and longer range than those of electromagnetic waves. However, energy remains a challenging issue in addition to long latency, high bit error rate, and limited ...
Faisal Alfouzan   +3 more
doaj   +1 more source

Medium Access Control for Opportunistic Concurrent Transmissions under Shadowing Channels

open access: yesSensors, 2009
We study the problem of how to alleviate the exposed terminal effect in multihop wireless networks in the presence of log-normal shadowing channels.
Seung Min Hur, In Keun Son, Shiwen Mao
doaj   +1 more source

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