Results 21 to 30 of about 2,448 (175)

SIP Signalling Delay in 3GPP [PDF]

open access: yes, 2003
The Session Initiation Protocol (SIP) will be used as the signalling protocol in the IP Multimedia Subsystem (IMS) of 3rd Generation Partnership Project (3GPP) UMTS networks. This paper discusses the delay as a relevant signalling Quality of Service (QoS) parameter.
Alexander A. Kist   +1 more
openaire   +1 more source

Flexible 3GPP MIMO Channel Modeling and Calibration With Spatial Consistency

open access: yesIEEE Access, 2023
As channel models are essential to the performance evaluation of wireless systems, the 3rd Generation Partnership Project (3GPP) developed different channel models to verify the effectiveness of emerging and cutting-edge technologies.
Hongqing Huang   +4 more
doaj   +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

open access: yesAdvanced Intelligent Systems, EarlyView.
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   +3 more
wiley   +1 more source

Digital Twin‐Based Optimization of Service Availability in LEO Mega Constellations Considering Handover Delays in Open RAN

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT As non‐terrestrial networks (NTNs) become integral to future 6G systems, ensuring seamless connectivity and service continuity over low Earth orbit (LEO) satellite constellations is essential. This work investigates the impact of open radio access network (RAN) functional splits on handover performance in NTNs, focusing on minimizing service ...
Siva Satya Sri Ganesh Seeram   +3 more
wiley   +1 more source

Performance Analysis of LTE Systems with Artificial Intelligence-Assisted Interpretation

open access: yesScientific Bulletin
This paper presents an interactive software platform for link-level performance analysis of Long Term Evolution (LTE) systems, integrating a parametric analytical engine with an artificial intelligence-driven interpretation module.
FUGARU Anisia-Teodora   +2 more
doaj   +1 more source

Path‐Based Deep Reinforcement Learning for On‐Board Routing in Satellite Constellation Networks

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Efficient usage of available network resources is a crucial factor for broadband services in interconnected satellite constellations. To meet required quality of service standards under heavy network loads, it is essential to optimize traffic distribution among the intersatellite links. To address this challenge, we propose an adaptive traffic
Manuel M. H. Roth   +4 more
wiley   +1 more source

Key technologies and introduction strategies for 3GPP R16 oriented evolution of 5G core network

open access: yesDianxin kexue, 2021
5G core network has been deployed based on 3GPP R15 standard.Firstly, the progress of 3GPP standard and the overall progress of end-to-end industry of 5G core network were reviewed, and the main research directions and contents of R16 based on the ...
Xu YANG   +3 more
doaj   +2 more sources

The Impact of IMS Mobility Management with Google Mobile Phone on Quality of Experience

open access: yesAl-Qadisiyah Journal for Engineering Science, 2023
The widespread of a Wireless Local Area Network (WLAN) access network in residential areas provi low-cost and high-speed access to the Third-Generation Partnership Project (3GPP) services for end us This has virtually made WLAN to be a complementary ...
Nadia Awad, Musa H. Wali
doaj   +1 more source

Low‐Complexity Hybrid Beamforming for LEO Satellites: Beam Update Rate Analysis and Advanced Adaptive Precoding

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Low Earth Orbit (LEO) satellite constellations offer unprecedented opportunities for global broadband connectivity but pose significant beamforming challenges due to rapid platform motion and stringent onboard hardware constraints. Fully digital architectures, while optimal in theory, remain impractical for satellite payloads, motivating ...
Mohammad Momani   +2 more
wiley   +1 more source

Dynamic Cell Division for Interference Management in Satellite Direct‐to‐Cell Systems

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT Direct‐to‐cell (D2C) connectivity enables future non‐terrestrial networks to provide service directly to standard terrestrial user equipment (UE) when terrestrial networks (TN) are unavailable. In this work, the satellite system is considered as a secondary network that supplements existing TN coverage while minimizing interference to the ...
Satya Chan   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy