Related Experiment Video
Updated: Mar 10, 2026
05:30
Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit
Published on: September 8, 2023
1.2K
Transportation dynamics on coupled networks with limited bandwidth
Ming Li1, Mao-Bin Hu1, Bing-Hong Wang2
1School of Engineering Science, University of Science and Technology of China, Hefei, 230026, P. R. China.
Scientific Reports
|December 15, 2016
Summary
Coupled communication networks can exhibit both free-flow and congestion states. Disassortative coupling is identified as an effective strategy for saving bandwidth in these complex systems.
Area of Science:
- Network Science
- Transportation Systems
- Complex Systems
Background:
- Real-world communication networks frequently couple to reduce costs, compromising individual network efficiency and standalone functionality.
- Understanding the dynamics of coupled networks is crucial for optimizing performance and resource allocation.
Purpose of the Study:
- To investigate the behavior of two coupled networks with bandwidth sharing.
- To analyze the impact of different coupling mechanisms on network transportation capacity and performance.
Main Methods:
- Development of a transportation model for two coupled networks incorporating bandwidth sharing.
- Analysis of network states (free-flow and congestion) and path characteristics under various coupling scenarios.
- Theoretical method derivation for calculating bandwidth usage and congestion transition points.
Main Results:
- Coexistence of free-flow and congestion states within coupled networks, and free-flow and congestion paths within individual networks.
- Transportation capacity is primarily determined by the coupling mechanism, not the fraction of coupled links.
- Assortative coupling significantly reduces transportation capacity, while disassortative coupling has minimal impact, offering bandwidth-saving potential.
Conclusions:
- Disassortative coupling emerges as a strategic approach for efficient bandwidth utilization in coupled communication networks.
- The developed theoretical method accurately predicts bandwidth usage and identifies congestion transition points, aiding network management.
Related Concept Videos
01:26Transmission-Line Differential Equations
1.0K
Transmission lines are essential components of electrical power systems. They are characterized by the distributed nature of resistance (R), inductance (L), and capacitance (C) per unit length. To analyze these lines, differential equations are employed to model the variations in voltage and current along the line.
Line Section Model
A circuit representing a line section of length Δx helps in understanding the transmission line parameters. The voltage V(x) and current i(x) are measured from...
Line Section Model
A circuit representing a line section of length Δx helps in understanding the transmission line parameters. The voltage V(x) and current i(x) are measured from...
1.0K
02:12Short-distance Transport of Resources
17.9K
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
17.9K
01:24Reynolds Transport Theorem
2.0K
The Reynolds transport theorem provides a framework to relate the time rate of change of an extensive property within a system to that in a control volume, which is crucial for analyzing fluid dynamics. Extensive properties, such as mass, velocity, acceleration, temperature, and momentum, can be expressed in terms of the mass of a fluid portion. These properties are called extensive because they depend on the system's size, while intensive properties are their corresponding values per unit...
2.0K
00:57Physiological Pharmacokinetic Models: Blood Flow-Limited Versus Diffusion-Limited Models
405
Physiological pharmacokinetic models, often called flow-limited or perfusion models, typically assume a swift drug distribution between tissue and venous blood, creating a rapid drug equilibrium. This premise is based on the idea that drug diffusion is extremely fast, and the cell membrane presents no barrier to drug permeation. In this scenario, where no drug binding occurs, the drug concentration in the tissue equals that of the venous blood leaving the tissue. This greatly simplifies the...
405
01:27Traveling Waves: Lossless Lines
506
The provided content explores the behavior of traveling waves on single-phase lossless transmission lines. It begins with a single-phase two-wire lossless transmission line of length Δx, characterized by a loop inductance LH/m and a line-to-line capacitance C F/m. These parameters result in a series inductance LΔx and a shunt capacitance CΔx.
506
01:21Distributed Loads: Problem Solving
1.2K
Beams are structural elements commonly employed in engineering applications requiring different load-carrying capacities. The first step in analyzing a beam under a distributed load is to simplify the problem by dividing the load into smaller regions, which allows one to consider each region separately and calculate the magnitude of the equivalent resultant load acting on each portion of the beam. The magnitude of the equivalent resultant load for each region can be determined by calculating...
1.2K