scholarly journals "A survey on the most important internet of things technologies "

2019 ◽  
Vol 6 (2) ◽  
pp. 1-12
Author(s):  
Gesoon j.k Al-Abass ◽  
Huda R. ALkifaey
Keyword(s):  
Cloud Computing ◽  
Internet Of Things ◽  
Recent Work ◽  
State Of The Art ◽  
Long Term Evolution ◽  
Network Layers ◽  
Term Evolution ◽  
Domain Importance ◽  
The World

"Internet of things (IoT) domain targets human with smart resolutions through the connection of “M2M” in all over the world, effectively. It was difficult to ignore domain importance field of IoT with the new deployment of applications such as smartphone in recent days. The most important layer in architecture of IoT is network layer, because of various systems (perform of cloud computing, switching, hub, gateway, so on), different technologies of connection (Long-Term Evolution (LTE), WIFI, Bluetooth, etc.) gathered in layer. Network layers should transfer the information from or to various applications/objects, via gateways/interfaces between networks that are heterogeneous, therefore utilizing different connection technologies, protocols. Recent work highlighted IoT technologies state-of-the-art utilized in architectures of IoT, some variations among them in addition to the applications of them in life."

The Random Access Procedure in Long Term Evolution Networks for the Internet of Things

2017 ◽  
Vol 55 (3) ◽  
pp. 124-131 ◽  
Author(s):  
Tiago P.C. De Andrade ◽  
Carlos A. Astudillo ◽  
Luiz R. Sekijima ◽  
Nelson L.S. Da Fonseca
Keyword(s):  
Internet Of Things ◽  
Random Access ◽  
Long Term Evolution ◽  
The Internet ◽  
Term Evolution ◽  
The Internet Of Things

scholarly journals Technologies of dynamic access and shared use of the radioelectric spectrum

2019 ◽  
Vol 11 (2) ◽  
pp. 53-70
Author(s):  
Gerardo Martínez Cruz
Keyword(s):  
Cognitive Radio ◽  
Digital Divide ◽  
Mobile Networks ◽  
State Of The Art ◽  
Long Term Evolution ◽  
Term Evolution ◽  
Traffic Capacity ◽  
Federal Institute ◽  
Engineering And Technology

Purpose – The quest to reduce the digital divide and increasing the traffic capacity of mobile networks to meet the demand for future connectivity led the Federal Institute of Telecommunications (IFT), through the Directorate of Engineering and Technology. Methodology – Analysis of the state of the art of the technologies of dynamic access and shared use of the radioelectric spectrum (TADUCE) in order to identify those that are susceptible to adoption in Mexico. The technologies analyzed in the research are those based on LTE (Long Term Evolution) that operate in frequency bands of free use, emerging technologies based on MIMO, Cognitive Radio (RC), Device-to-Device (D2D) and TV White Spaces (TVWS) communications. Findings – The DIT establishes different recommendations that the IFT must consider in order for these technologies to be optimally implemented in the country.

scholarly journals Reconfigurable 3-D Slot Antenna Design for 4G and Sub-6G Smartphones with Metallic Casing

Electronics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 216 ◽  
Author(s):  
Peng Yang
Keyword(s):  
State Of The Art ◽  
Three Dimensional ◽  
Smartphone Application ◽  
Long Term Evolution ◽  
Antenna Design ◽  
Slot Antenna ◽  
Pin Diodes ◽  
Design Processes ◽  
Term Evolution

The design of a reconfigurable three-dimensional (3-D) slot antenna for 4G and sub-6G smartphone application is presented in this paper. The antenna is located at the bottom of the smartphone and integrated with a metallic casing. Positive-Intrinsic-Negative (PIN) diodes are loaded at the dual-open slot and the folded U-shaped slot, respectively, which are used to realize four working states. The antenna has a compact volume of 42 × 6 × 6 mm3, which can cover the long term evolution (LTE) bands of 698–960 MHz and 1710–2690 MHz, and the sub-6G bands of 3300–3600 MHz & 4800–5000 MHz. The design processes are presented and the structure is optimized, fabricated and measured. The comparison to other state-of-the-art antennas shows that the proposed design has multiband characteristics with small size.

scholarly journals Avaliação de Desempenho da Técnica de Offloading Computacional em Nuvens Móveis

2015 ◽  
Author(s):  
Warley Junior ◽  
Adriano Henrique ◽  
Kelvin Lopes
Keyword(s):  
Cloud Computing ◽  
Mobile Cloud Computing ◽  
Long Term Evolution ◽  
Mobile Cloud ◽  
Term Evolution ◽  
4G Lte ◽  
Wireless Fidelity

Apesar dos avanços de hardware nos dispositivos móveis, é sabido que estes ainda são limitados em termos de processamento, armazenamento e energia quando comparados aos desktops e servidores. O paradigma de Computação em Nuvem Móvel (MCC – Mobile Cloud Computing) permite estender os recursos computacionais e energéticos de dispositivos móveis através da utilização das técnicas de offloading. Porém, o offloading nem sempre trás ganhos de energia, uma vez que isso pode depender da tecnologia de acesso sem fio empregada. Este artigo apresenta uma avaliação de desempenho da técnica de offloading computacional em um ambiente de nuvem móvel. O estudo destaca o impacto na utilização da MCC via redes Wi-Fi (Wireless Fidelity) e 4G LTE (Long Term Evolution) na autonomia da bateria e no tempo de ocupação do processador do dispositivo móvel, ao utilizar offloading computacional.

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