Results 51 to 60 of about 13,970 (205)

Routing and Downlink Resource Allocation for Multicast Traffic in LEO Satellite Constellations

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT In this work, we optimize unicast and multicast traffic delivery over non‐terrestrial networks (NTNs) to users on the ground through direct satellite downlink (DL). We consider a gateway‐free mesh architecture with low Earth orbit (LEO) satellites interconnected via inter‐satellite links (ISLs), where unicast and multicast services compete for
Federico Lozano‐Cuadra, Israel Leyva‐Mayorga, Jimmy Jessen Nielsen, Beatriz Soret   +3 more
wiley   +1 more source

5G New Radio Physical Downlink Control Channel Reliability Enhancements for Multiple Transmission-Reception-Point Communications

IEEE Access, 2022
Non-coherent transmission from multiple transmission-reception-points (TRPs), i.e., base stations, or base station panels to a user equipment (UE) is exploited in 5G New Radio (NR) to improve downlink reliability and cell-edge throughput.
Sutharshun Varatharaajan, Marcus Grossmann, Giovanni Del Galdo   +2 more
doaj   +1 more source

Restoring End‐to‐End Transport With QUIC on Satellite Paths

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Slow Start is a key congestion control mechanism used to assure a safe response to overload of a path across the Internet. This mechanism increases the startup time taken by the sender to reach the capacity available across the path. The benefit becomes significant on paths with a high bandwidth‐delay product.
Matthias Hofstätter, Raffaello Secchi, Gorry Fairhurst, Tomaso de Cola, Kai‐Steffen Hielscher, Reinhard German   +5 more
wiley   +1 more source

Serviços multimédia multicast de próxima geração [PDF]

, 2011
Mestrado em Engenharia Electrónica e TelecomunicaçõesUma das mais recentes conquistas na evolução móvel foi o 3G, permitindo o acesso a serviços multimédia com qualidade de serviço assegurada.
Pinho, Luís André Silva Cruz
core  

Enabling pandemic‐resilient healthcare: Narrowband Internet of Things and edge intelligence for real‐time monitoring

CAAI Transactions on Intelligence Technology, EarlyView.
Abstract The Internet of Things (IoT) in deploying robotic sprayers for pandemic‐associated disinfection and monitoring has garnered significant attention in recent research. The authors introduce a novel architectural framework designed to interconnect smart monitoring robotic devices within healthcare facilities using narrowband Internet of Things ...
Md Motaharul Islam, Mohammad Kamrul Hasan, Shayla Islam, Mohammed Balfaqih, Ahmed Ibrahim Alzahrani, Nasser Alalwan, Nurhizam Safie, Zaheed Ahmed Bhuiyan, Rahul Thakkar, Taher M. Ghazal   +9 more
wiley   +1 more source

3GPP-Compliant Datasets for xG Location-Aware Networks

IEEE Open Journal of Vehicular Technology
Location awareness is vital in next generation (xG) wireless networks to enable different use cases, including location-based services (LBSs) and efficient network management.
Andrea Conti, Gianluca Torsoli, Carlos A. Gomez-Vega, Alessandro Vaccari, Gianluca Mazzini, Moe Z. Win   +5 more
doaj   +1 more source

Guest Editorial: Unfolding the potential of 5G technologies for future wireless networks

IET Networks, EarlyView.
Abstract With the rapid advancements in mobile Internet and smartphones, data traffic in current mobile communication systems is growing exponentially. At the same time, demands for lower latency, increased robustness, and higher energy efficiency are becoming more stringent.
Gwanggil Jeon, Awais Ahmad, Abdellah Chehri, Shiping Wen   +3 more
wiley   +1 more source

Integrated Sensing and Communication in a Fiber‐Wireless System With Time‐Phase Synthesis Dimension Waveform

Nanophotonics, Volume 15, Issue 17, 11 September 2026.
A unified fiber‐wireless integrated sensing and communication system is enabled by a single microwave photonic platform with a time‐phase synthesis dimension waveform. This architecture simultaneously delivers high‐speed data transmission, high‐precision wireless ranging, and accurate fiber diagnostics over a high‐power analog radio‐over‐fiber link ...
Shengkun Chen, Zhenglin Tang, Weiqiang Lyu, Mengke Wang, Yaowen Zhang, Zhen Zeng, Lingjie Zhang, Heping Li, Zhiyao Zhang, Yong Liu   +9 more
wiley   +1 more source

Overcoming the Phase Discontinuity Problem in RIS Optimization: A Robust and Scalable Phase‐Aware Deep Regression Framework via Hybrid CNN–LSTM Architecture

Advanced Intelligent Systems, Volume 8, Issue 9, September 2026.
The phase discontinuity problem—where the cyclic nature of phase angles causes catastrophic errors near the ±π boundary—is a fundamental obstacle in learning‐based reconfigurable intelligent surface (RIS) optimization. A phase‐aware hybrid CNN–LSTM framework resolves this by decomposing phase predictions into sine–cosine components, mapping circular ...
Seda Savaşçı Şen, Ali Çalhan, Murtaza Cicioğlu, Oğuzhan Demiryürek   +3 more
wiley   +1 more source

End-to-End Network Requirements for 3GPP Voice Over Wi-Fi (VoWiFi) Service

IEEE Access
4G mobile networks were the first to allow packet-switched voice calls, supported by an optional IP-based infrastructure called IP Multimedia Subsystem (IMS).
M. Luglio, C. Roseti, F. Zampognaro
doaj   +1 more source