Results 101 to 110 of about 871,008 (258)

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

International 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, Thomas Jerkovits, Anupama Hegde, Thomas Delamotte, Andreas Knopp   +4 more
wiley   +1 more source

Bottleneck Congestion and Modal Split Revisited [PDF]

The paper examines the efficiency of alternative road pricing schemes when an alternative railroad service is available. The paper uses a model, developed by Tabuchi (1993), in which road transport presents a bottleneck congestion technology while ...
Romeo Danielis, Edoardo Marcucci
core  

Traffic congestion parameter estimation in time series of airborne optical remote sensing images [PDF]

, 2009
In this paper we propose a new model based traffic parameter estimation approach in congested situations in time series of airborne optical remote sensing data.
Palubinskas, Gintautas, Reinartz, Peter, Kurz, Franz   +2 more
core  

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

International 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, Hee Wook Kim, Bon‐Jun Ku, Daesub Oh   +3 more
wiley   +1 more source

Cordon pricing consistent with the physics of overcrowding [PDF]

This paper describes the modeling of recurring congestion in a network. It is shown that the standard economic models of marginal cost cannot describe precisely traffic congestion in networks during time-dependent conditions.
Nikolas Geroliminis, David Levinson
core  

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

Analysis of Traffic Congestion Factors in Typical Sections of Expressways Using Structural Equation Model

Journal of Advanced Transportation
Urban expressways serve as the main arteries of urban transportation. Congestion and traffic disruptions on expressways can easily lead to the paralysis of the entire regional transportation system.
Yang Li, Kaicheng Xu, Ting Qiao, Xinyu Yang, Xiaohua Zhao, Xiaoping Zhang   +5 more
doaj   +1 more source

The Social Cost of Road Congestion in Ile-de-France Region (and France): Empirical Evidences from the Paris Ring-Road [PDF]

The aim of this article was to assess specific problems concerning traffic congestion access to the city of Paris. First, we attempted to evaluate the evolution of the congestion cost for the Paris Ring-Road (PRR), the major urban highway surrounding the
Martin Koning
core  

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

Isolation, Insularity and Resilience: A Review of the Geophysical, Socioeconomic, and Environmental Vulnerabilities of Gran Canaria and Lesvos Islands for Policy Interventions to Global Change

Sustainable Development, EarlyView.
ABSTRACT The dynamic nature of small islands being geographically isolated and their perceived connectedness with global networks complicates research attempts to draw general conclusions on whether insularity leads to marginalization or strengthens their resilience for sustainable development.
Toheeb Lekan Jolaosho, Mazen Marouani, Takwa Boughanmi   +2 more
wiley   +1 more source