Flow Control of Real-time Multimedia Applications in Best-effort Networks

2009 ◽  
pp. 311-356
Author(s):  
Aninda Bhattacharya ◽  
Alexander G. Parlos
Keyword(s):  
Flow Control ◽  
Real Time ◽  
Multimedia Applications ◽  
Best Effort

Methodology to Increase Flexibility in Inter-Region Flow Control for Urban Traffic

2021 ◽  
pp. 036119812199742
Author(s):  
Sunghoon Kim ◽  
Monica Menendez ◽  
Hwasoo Yeo
Keyword(s):  
Flow Control ◽  
Real Time ◽  
Urban Traffic ◽  
Test Results ◽  
Flow Restriction ◽  
Region Flow ◽  
The Subject ◽  
Negative Impacts ◽  
Transfer Flow ◽  
Supply Level

Perimeter control is used to regulate transfer flows between urban regions. The greedy control (GC) method takes either the minimum or the maximum for the control inputs. Although it has the advantage of simplicity for real-time feasibility, a few existing studies have shown that it can sometimes have negative impacts because of unnecessary transfer flow restrictions. To reduce unnecessary restrictions, this study provides a method that gives flexibility to ease the strict conditions of the conventional GC. First, we propose a modification as a way of granting exceptions to the flow restriction under specific conditions. Second, we develop an algorithm to determine the threshold dynamically for accepting the exception, by comparing the possible outflow loss of the subject region and the possible outflow gain of its neighboring regions. The test results show that this flexible greedy control can handle the balance between the transfer demands and the greed of regions for securing the supply level, while increasing the performance in both vehicle hours traveled and trip completion.

scholarly journals A Survey on Vulnerabilities and Countermeasures in the Communications of the Smart Grid

Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 1881
Author(s):  
Jesús Lázaro ◽  
Armando Astarloa ◽  
Mikel Rodríguez ◽  
Unai Bidarte ◽  
Jaime Jiménez
Keyword(s):  
Smart Grid ◽  
Real Time ◽  
International Electrotechnical Commission ◽  
Communication Infrastructure ◽  
Iec 61850 ◽  
Best Effort ◽  
Electrical Grid ◽  
Informational Technology ◽  
Iec 62351 ◽  
Time Critical

Since the 1990s, the digitalization process has transformed the communication infrastructure within the electrical grid: proprietary infrastructures and protocols have been replaced by the IEC 61850 approach, which realizes interoperability among vendors. Furthermore, the latest networking solutions merge operational technologies (OTs) and informational technology (IT) traffics in the same media, such as time-sensitive networking (TSN)—standard, interoperable, deterministic, and Ethernet-based. It merges OT and IT worlds by defining three basic traffic types: scheduled, best-effort, and reserved traffic. However, TSN demands security against potential new cyberattacks, primarily, to protect real-time critical messages. Consequently, security in the smart grid has turned into a hot topic under regulation, standardization, and business. This survey collects vulnerabilities of the communication in the smart grid and reveals security mechanisms introduced by international electrotechnical commission (IEC) 62351-6 and how to apply them to time-sensitive networking.

scholarly journals Hydraulic optimisation of multiple flow control locations for the design of local real time control systems

2020 ◽  
pp. 1-10
Author(s):  
M. Eulogi ◽  
S. Ostojin ◽  
P. Skipworth ◽  
J. D. Shucksmith ◽  
A. Schellart
Keyword(s):  
Flow Control ◽  
Control Systems ◽  
Real Time ◽  
Real Time Control ◽  
Time Control

Optimizing the Perceptual Quality of Real-Time Multimedia Applications

2015 ◽  
Vol 22 (4) ◽  
pp. 14-28 ◽  
Author(s):  
Jingxi Xu ◽  
Benjamin W. Wah
Keyword(s):  
Real Time ◽  
Multimedia Applications ◽  
Perceptual Quality

Assessing Task Migration Impact on Embedded Soft Real-Time Streaming Multimedia Applications

2008 ◽  
Vol 2008 ◽  
pp. 1-15 ◽  
Author(s):  
Andrea Acquaviva ◽  
Andrea Alimonda ◽  
Salvatore Carta ◽  
Michele Pittau
Keyword(s):  
Real Time ◽  
Multimedia Applications ◽  
Task Migration

Supporting real-time and multimedia applications on the Mercuri testbed

1995 ◽  
Vol 13 (4) ◽  
pp. 749-763 ◽  
Author(s):  
A. Guha ◽  
A. Pavan ◽  
J. Liu ◽  
A. Rastogi ◽  
T. Steeves
Keyword(s):  
Real Time ◽  
Multimedia Applications

scholarly journals Predictive flow control for TCP-friendly end-to-end real-time video on the Internet

2002 ◽  
Vol 25 (13) ◽  
pp. 1230-1242 ◽  
Author(s):  
Yeali S. Sun ◽  
Fu-Ming Tsou ◽  
Meng Chang Chen
Keyword(s):  
Flow Control ◽  
Real Time ◽  
The Internet ◽  
Tcp Friendly ◽  
End To End
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