Results 11 to 20 of about 7,544 (187)

The Trophic Cascade Effects of Marine Mesozooplankton: Theory, Dynamics, and Responses to Global Change [PDF]

open access: yesMicroorganisms
Marine mesozooplankton (0.2–20 mm), as a critical trophic link between primary producers and higher trophic levels, are pivotal drivers of trophic cascades regulating pelagic ecosystem structure and function.
Mianrun Chen
doaj   +2 more sources

Research on network slicing security for 5G mMTC

open access: yes网络与信息安全学报, 2022
With the emergence of new 5G business, architecture and technology, more and more researchers pay attention to security issues and potential security risks.Massive machine type communication is one of the three major application scenarios of 5G.It ...
Zijun XU, Jianwei LIU, Geng LI
doaj   +5 more sources

The Age of Information in Wireless Cellular Systems: Gaps, Open Problems, and Research Challenges [PDF]

open access: yesSensors, 2023
One of the critical use cases for prospective fifth generation (5G) cellular systems is the delivery of the state of the remote systems to the control center.
Elena Zhbankova   +3 more
doaj   +2 more sources

NOMA-Based Random Access in mMTC XL-MIMO

open access: yesIEEE Access, 2023
In machine-type communication (MTC), massive access attempts are generated and the massive MIMO is the key technology to support this demand. To support massive MTC (mMTC), the recent extra-large scale massive multiple-input multiple-output (XL-MIMO ...
Thiago Augusto Bruza Alves, Taufik Abrao
doaj   +2 more sources

Low Complexity Interference Cancellation Method for mMTC Devices [PDF]

open access: yesIEEE Access, 2019
For the massive Machine Type Communications (mMTC) service, a large number of devices can be connected simultaneously and the repetition signals that contain the same data can be transmitted to increase the received signal strength.
Seongmok Lim   +2 more
doaj   +2 more sources

Investigations of potential non-amino acid SNAT2 inhibitors [PDF]

open access: yesFrontiers in Pharmacology, 2023
The sodium-coupled neutral amino acid transporter 2 (SNAT2, SLC38A2) has been implicated in cancer for its ability to supply cancer cells with glutamine and sarcosine. A recent high-throughput screen published by Gauthier-Coles et al.
Sebastian Jakobsen   +2 more
doaj   +2 more sources

mMTC Deployment over Sliceable Infrastructure: The Megasense Scenario [PDF]

open access: yesIEEE Network, 2021
Massive Machine Type Communication (mMTC) has long been identified as a major vertical sector and enabler of the industry 4.0 technological evolution that will seamlessly ease the dynamics of machine-to-machine communications while leveraging 5G technology.
Motlagh, Naser Hossein   +7 more
openaire   +4 more sources

RSBA-Resource Sharing Beamforming Access for 5G-mMTC [PDF]

open access: yes2019 IEEE Globecom Workshops (GC Wkshps), 2019
Providing connectivity in massive Machine Type Communications (mMTC) poses interesting challenges. In this paper, we propose and study a time diversity beamformer for reception in grant-free access in order to support massive uplink connectivity within the paradigm of the Internet of Things (IoT).
Diaz Vilor, Carles   +2 more
openaire   +2 more sources

Joint power control and user grouping mechanism for efficient uplink non‐orthogonal multiple access‐based 5G communication: Utilising the Lèvy‐flight firefly algorithm

open access: yesIET Networks, EarlyView., 2023
We utilise a metaheuristic optimisation method, inspired by nature, called the Lévy‐flight firefly algorithm (LFA), to tackle the power regulation and user grouping in the NOMA systems. Abstract The non‐orthogonal multiple access strategies have shown promise to boost fifth generation and sixth generation wireless networks' spectral efficiency and ...
Zaid Albataineh   +4 more
wiley   +1 more source

A Systematic Analysis of Narrowband IoT Quality of Service

open access: yesSensors, 2020
Narrowband-IoT (NB-IoT) is part of a novel group of access technologies referred to as Low-Power Wide Area Networks (LPWANs), which provide energy-efficient and long-range network access to IoT devices.
Andreas Philipp Matz   +3 more
doaj   +1 more source

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