Results 51 to 60 of about 43,563 (260)

Hybrid access control mechanism for massive machine type communications

Discover Internet of Things
Massive Machine Type Communications (mMTC) are integral to the Internet of Things (IoT) ecosystem, requiring efficient and reliable access control mechanisms to manage the enormous number of connected devices.
David Martin Amitu, Roseline N. Akol, Jonathan Serugunda   +2 more
doaj   +1 more source

Multi-Connectivity in 5G and Beyond Non-Terrestrial Networks

Journal of Communications Software and Systems, 2022
The Fifth Generation (5G) communications systems aim to serve such service classes as Ultra-Reliable Low Latency Communications (URLLC), enhanced Mobile Broadband (eMBB), and massive Machine-Type Communications (mMTC).
Mikko Majamaa, Henrik Martikainen, Lauri Sormunen, Jani Puttonen   +3 more
doaj   +1 more source

Code-expanded random access for machine-type communications [PDF]

2012 IEEE Globecom Workshops, 2012
The random access methods used for support of machine-type communications (MTC) in current cellular standards are derivatives of traditional framed slotted ALOHA and therefore do not support high user loads efficiently. Motivated by the random access method employed in LTE, we propose a novel approach that is able to sustain a wide random access load ...
Nuno K. Pratas, Henning Thomsen, Cedomir Stefanovic, Petar Popovski   +3 more
openaire   +3 more sources

Photonic‐Enabled Energy‐Efficient Transparent Neuromorphic Computing Devices: A Review

Advanced Science, EarlyView.
Transparent photonic neuromorphic computing devices merge optics and brain‐inspired computing to overcome von Neumann bottlenecks with ultrafast, low‐energy processing. By exploiting transparent oxides, 2D materials, phase‐change materials, and hybrid heterostructures, these platforms enable photonic synapses, memory, and logic for see‐through edge ...
Shuvaraj Ghosh, Ki‐bum Lee, Junghyeon Lee, Seunghee Cho, Malkeshkumar Patel, Hangfei Li, Yu Wen, Ye Zhou, Joondong Kim   +8 more
wiley   +1 more source

Random access for massive machine-type communications

CoRR, 2019
With an explosive development of the Internet-of-Things (IoT), the number of devices or machines (called users) connected to a base station is envisioned to reach tens of billions in the near future. In order to accommodate such a massive connectivity, random access schemes are deemed as an efficient method.
openaire   +5 more sources

Performance Study and Enhancement of Access Barring for Massive Machine-Type Communications

IEEE Access, 2019
Machine-type communications (MTC) is an emerging technology that boosts the development of the Internet of Things by providing ubiquitous connectivity and services. Cellular networks are an excellent choice for providing such hyper-connectivity thanks to
Jose-Ramon Vidal, Luis Tello-Oquendo, Vicent Pla, Luis Guijarro   +3 more
doaj   +1 more source

Effective Capacity and Power Allocation for Machine-Type Communication [PDF]

IEEE Transactions on Vehicular Technology, 2019
accepted as correspondence in IEEE Transactions on Vehicular ...
Mohammad Shehab, Hirley Alves, Matti Latva-aho   +2 more
openaire   +3 more sources

Biomimetic Gradient Hydrogels Regulate Osteochondral Regeneration Microenvironment Remodeling via Spatiotemporal Programming Engineering

Advanced Science, EarlyView.
Electric field‑driven continuous gradient hydrogel GHZF4 achieves spatiotemporal growth factor release, modulates immune microenvironment, angiogenesis and osteochondral differentiation. It realizes cell‑free functional osteochondral repair in rat/rabbit models, offering a promising biomimetic strategy for gradient tissue regeneration.
Xiaolian Niu, Shengzhao Xiao, Di Huang, Xuesong Wang, Yanwei Cao, Xiaodan Sun, Nicholas Dunne, Xiaoming Li   +7 more
wiley   +1 more source

Energy Efficiency in Multiple Antenna Machine-Type Communications With Reconfigurable RF Transceivers

IEEE Access, 2019
In machine-type communication (MTC) networks, each node is equipped with a set of radio-frequency (RF) transceivers, antennas and power source. Besides, wireless nodes are typically battery-powered, whose recharging or replacement is often not viable or ...
Edson Leonardo Dos Santos, Andre Augusto Mariano, Glauber Brante, Bernardo Leite, Richard Demo Souza, Thierry Taris   +5 more
doaj   +1 more source

Constraint Hubs Deployment for Efficient Machine-Type Communications [PDF]

IEEE Transactions on Wireless Communications, 2018
Massive Internet of Things (mIoT) is an important use case of 5G. The main challenge for mIoT is the huge amount of uplink traffic as it dramatically overloads the radio access network (RAN). To mitigate this shortcoming, a new RAN technology has been suggested, where small cells are used for interconnecting different devices to the network. The use of
Taleb, Tarik, Chelli, Ali, Hellaoui, Hamed, Bagaa, Miloud   +4 more
openaire   +1 more source