Connecting Two Worlds: Physical Models and Graph Models of Wireless Network Topologies

2011 ◽  
Author(s):  
Andr´s Farago ◽  
Stefano Basagni
Keyword(s):  
Wireless Network ◽  
Physical Models ◽  
Graph Models ◽  
Network Topologies

scholarly journals Distributed Maintenance of Resource Efficient Wireless Network Topologies

2002 ◽  
pp. 935-946 ◽  
Author(s):  
Matthias Grünewald ◽  
Tamás Lukovszki ◽  
Christian Schindelhauer ◽  
Klaus Volbert
Keyword(s):  
Wireless Network ◽  
Network Topologies

scholarly journals Optimal Performance and Modeling of Wireless Technology Enabling Smart Electric Metering Systems Including Microgrids

Sensors ◽  
2021 ◽  
Vol 21 (21) ◽  
pp. 7208
Author(s):  
Carlos Suárez ◽  
Esteban Inga
Keyword(s):  
Wireless Network ◽  
Optimal Routing ◽  
Wireless Technology ◽  
Model Configuration ◽  
The World ◽  
Energy Metering ◽  
Network Topologies ◽  
Micro Grids

This work is focused on the performance analysis and optimal routing of wireless technology for intelligent energy metering, considering the inclusion of micro grids. For the study, a geo-referenced scenario has been taken into account, which will form the structure of a graph to be solved using heuristic-based algorithms. In the first instance, the candidate site of the world geography to perform the case study is established, followed by deploying infrastructure devices and determining variables and parameters. Then, the model configuration is programmed, taking into account that a set of nodes and vertices is established for proper routing, resulting in a preliminary wireless network topology. Finally, from a set of restrictions, a determination of users connected to the concentrator and optimal routing is performed. This procedure is treated as a coverage set problem. Consequently, to establish the network parameters, two restrictions are specifically considered, capacity and range; thus, can be determined the best technology to adapt to the location. Finally, a verification of the resulting network topologies and the performance of the infrastructure is done by simulating the wireless network. With the model created, scenarios are tested, and it is verified that the optimization model demonstrates its effectiveness.

scholarly journals OPTIMIZATION OF LIFETIME IN WIRELESS MONITORING NETWORKS

2020 ◽  
pp. 267-272
Author(s):  
Yuliia Kovalova ◽  
Tetyana Babenko ◽  
Oleksandr Oksiiuk ◽  
Larysa Myrutenko
Keyword(s):  
Energy Consumption ◽  
Wireless Network ◽  
Data Transmission ◽  
Monitoring Network ◽  
Test Results ◽  
Monitoring Networks ◽  
Wireless Monitoring ◽  
Mac Layers ◽  
Network Topologies ◽  
Hardware Platforms

Wireless network finds application in communal facilities monitoring and management systems. One of the basic requirements for the construction of a wireless monitoring network with autonomous power supply is the guaranteed network lifetime. Up-to-date challenges in the field of wireless monitoring networks are creation of universal hardware platforms that allow for usage of widespread proprietary transceivers of different manufacturers aiming at creating network topologies raising energy efficiency and lifetime of WMN. The article describes a model of a wireless network allowing evaluation of its lifetime by energy parameters and dynamic reconfigurations induced by external influence. On the basis of the represented test results one may conclude that energy consumption is defined by the level of the application stack of the protocol ZigBeе and doesn’t depend on PHY and MAC layers of the protocol 802.15.4. Considering energy consumption of the data transmission process, potential increase in the lifetime of the devices and network as a whole is mostly controlled by the sizes of useful messages.

Recent Radiative and Collisional Atomic Data of Astrophysical Interest

1988 ◽  
Vol 102 ◽  
pp. 129-132
Author(s):  
K.L. Baluja ◽  
K. Butler ◽  
J. Le Bourlot ◽  
C.J. Zeippen
Keyword(s):  
Mass Production ◽  
Bound States ◽  
Physical Models ◽  
Impact Excitation ◽  
Electron Impact Excitation ◽  
Atomic Data ◽  
Isoelectronic Sequence ◽  
Astrophysical Interest ◽  
Radiative Transitions ◽  
Forbidden Transitions

SummaryUsing sophisticated computer programs and elaborate physical models, accurate radiative and collisional atomic data of astrophysical interest have been or are being calculated. The cases treated include radiative transitions between bound states in the 2p4and 2s2p5configurations of many ions in the oxygen isoelectronic sequence, the photoionisation of the ground state of neutral iron, the electron impact excitation of the fine-structure forbidden transitions within the 3p3ground configuration of CℓIII, Ar IV and K V, and the mass-production of radiative data for ions in the oxygen and fluorine isoelectronic sequences, as part of the international Opacity Project.

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