Results 41 to 50 of about 3,108 (295)

Trustworthy handover in LEO satellite mobile networks

open access: yesICT Express, 2022
Recently, a low earth orbit (LEO) satellite network is one of major systems to provide seamless access for terrestrial network systems. In order to provide robust access, efficient handover mechanisms are essential. However, conventional mechanisms may introduce frequent handovers due to the rapid movement of satellites. To deal with this problem, this
Soyi Jung   +5 more
openaire   +2 more sources

A Blockchain-Based Authentication Protocol Using Cryptocurrency Technology in LEO Satellite Networks

open access: yes, 2021
With the rapid development of satellite technology and the high transmission efficiency of LEO satellites, LEO satellite communication has received increasing attention.
Le Chang   +3 more
core   +1 more source

Overview of LEO satellite networking communication technology for direct-to-phone connectivity

open access: yesZhongguo kongjian kexue jishu
To overcome the limitations of traditional terrestrial communication coverage and establish seamless, all-time, all-domain connectivity capabilities through direct-to-phone connection of integrated space-ground services, this study conducts a systematic ...
LI Jingling   +8 more
doaj   +1 more source

An Efficient Multi-Dimensional Resource Allocation Mechanism for Beam-Hopping in LEO Satellite Network

open access: yesSensors, 2022
Low Earth Orbit (LEO) satellite communication networks have become an important means to provide internet access services for areas with limited infrastructure. Compared with the Geostationary Earth Orbit (GEO) satellites, the LEO satellites have limited
Shengjun Guo   +5 more
doaj   +1 more source

On call admission control and handover management in multimedia LEO satellite systems

open access: yes, 2013
11 S.Low earth orbit (LEO) satellite systems gained considerable interest in the past decade and were expected to be instrumental in future telecommunications systems.
Pavlidou, Fotini-Niovi   +2 more
core   +1 more source

Learning Emergent Random Access Protocol for LEO Satellite Networks [PDF]

open access: yes, 2022
A mega-constellation of low-altitude earth orbit (LEO) satellites (SATs) are envisaged to provide a global coverage SAT network in beyond fifth-generation (5G) cellular systems.
Young-Chai Ko   +9 more
core   +1 more source

Powder Optimization Strategies for Binder Jetting Printing of BaTiO3 and Ba0,6Sr0,4TiO3 Ceramics

open access: yesAdvanced Engineering Materials, EarlyView.
Powder optimization is investigated to enable binder jetting of BaTiO3 and Ba0.6Sr0.4TiO3 ferroelectric ceramics. The antagonistic relationship between flowability and binder compatibility is addressed through binder impregnation of granulated powders and fumed silica addition to fine powders.
Fanny Pruvost   +4 more
wiley   +1 more source

Real-Time Cyber-Physical Digital Twin for Low Earth Orbit Satellite Constellation Network Enhanced Wide-Area Power Grid

open access: yesIEEE Open Journal of the Industrial Electronics Society
Low Earth orbit (LEO) satellite networks, such as SpaceX's Starlink, offer enhanced communication potential for contemporary power grid measurement and control.
Tianshi Cheng   +2 more
doaj   +1 more source

DNN Beamforming for LEO Satellite Communication at Sub-THz Bands

open access: yes, 2022
The 6G communication system will be designed at sub-THz frequencies due to increasing demand in data rates, emerging new applications and advanced communication technologies. These high-performing systems will heavily rely on artificial intelligence (AI)
Rajnish Kumar, Shlomi Arnon
core   +1 more source

Oxygen‐Tunnel Indium Tin Oxide Vertical Channel Transistors with Enhanced Current Density and Reliability for Monolithic 3D Compute‐In‐Memory Systems

open access: yesAdvanced Functional Materials, EarlyView.
Oxygen‐tunnel (OT) indium tin oxide (ITO) vertical channel transistors (VCTs) enable reliable, high‐density gain‐cell memory for monolithic 3D integration. A sandwiched SiN/SiO2/SiN OT stack selectively regulates oxygen transport, suppressing parasitic electrode oxidation while stabilizing channel oxygen vacancies, thereby suppressing carrier injection
Hyeonho Gu   +17 more
wiley   +1 more source

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