To simulate Hybrid Topology using MATLAB environment has simple steps to follow and it aggregates several network topologies like star, mesh, and bus in a single network. To replicate a hybrid topology that includes configuring distinct topologies in the network and associating them as needed. It is helpful for learning the complex network’s properties in which diverse network topologies can collaborate to improve the performance, resilience, and scalability.
Steps to Simulate a Hybrid Topology in MATLAB
- Define the Topologies within the Hybrid Network
- Describe individual segments of the network with diverse topologies like a star topology associated to a mesh topology.
- Choose how to attach these topologies that making the hybrid structure.
- Simulate Data Transmission
- Execute data transmission in each topology such as nodes within a star topology interact via a central hub.
- Enable interaction through distinct topologies by describing the gateways or bridging nodes.
- Visualize the Hybrid Topology
- Plot each topology within a unique portion of the network space and associate them based on the hybrid structure.
- Evaluate Performance Metrics
- Estimate the network performance parameters like throughput, latency, and resilience to compute the hybrid structure’s advantages.
Example MATLAB Code for Simulating a Hybrid Topology
Below is an example aggregates a star topology and a mesh topology are associated by a single bridging node.
% Parameters
numStarNodes = 5; % Number of nodes in the star topology
numMeshNodes = 4; % Number of nodes in the mesh topology
starRadius = 10; % Radius for star topology nodes around the hub
meshRadius = 20; % Radius for mesh topology nodes
centralHubPosition = [0, 0]; % Position of the star hub
bridgeNodePosition = [15, 15]; % Position of the bridging node between topologies
transmissionDelay = 1; % Delay per transmission (in seconds)
% Step 1: Define Positions for Star Topology Nodes
theta = linspace(0, 2*pi, numStarNodes+1); % Evenly spaced angles
theta(end) = []; % Remove duplicate at 2*pi
starNodePositions = [starRadius * cos(theta)’ + centralHubPosition(1), …
starRadius * sin(theta)’ + centralHubPosition(2)];
% Step 2: Define Positions for Mesh Topology Nodes
meshNodePositions = meshRadius * rand(numMeshNodes, 2) + bridgeNodePosition;
% Plot the hybrid topology
figure;
hold on;
% Plot Star Topology Nodes and Connections
plot(centralHubPosition(1), centralHubPosition(2), ‘ro’, ‘MarkerSize’, 8, ‘DisplayName’, ‘Star Hub’);
for i = 1:numStarNodes
plot(starNodePositions(i,1), starNodePositions(i,2), ‘bo’, ‘MarkerSize’, 6, ‘DisplayName’, [‘Star Node ‘, num2str(i)]);
plot([centralHubPosition(1), starNodePositions(i,1)], [centralHubPosition(2), starNodePositions(i,2)], ‘k–‘);
end
% Plot Mesh Topology Nodes and Connections
for i = 1:numMeshNodes
plot(meshNodePositions(i,1), meshNodePositions(i,2), ‘go’, ‘MarkerSize’, 6, ‘DisplayName’, [‘Mesh Node ‘, num2str(i)]);
for j = i+1:numMeshNodes
plot([meshNodePositions(i,1), meshNodePositions(j,1)], [meshNodePositions(i,2), meshNodePositions(j,2)], ‘k:’);
end
end
% Plot Bridge Node and Connection
plot(bridgeNodePosition(1), bridgeNodePosition(2), ‘mo’, ‘MarkerSize’, 8, ‘DisplayName’, ‘Bridge Node’);
plot([centralHubPosition(1), bridgeNodePosition(1)], [centralHubPosition(2), bridgeNodePosition(2)], ‘r-‘);
for i = 1:numMeshNodes
plot([bridgeNodePosition(1), meshNodePositions(i,1)], [bridgeNodePosition(2), meshNodePositions(i,2)], ‘r-‘);
end
title(‘Hybrid Topology Network (Star and Mesh)’);
xlabel(‘X Position’);
ylabel(‘Y Position’);
grid on;
axis equal;
hold off;
% Step 3: Simulate Data Transmission within Hybrid Topology
disp(‘Data Transmission Simulation:’);
% Data Transmission in Star Topology
for i = 1:numStarNodes
fprintf(‘Star Node %d sends data to Hub…\n’, i);
pause(transmissionDelay);
fprintf(‘Hub received data from Star Node %d\n’, i);
end
% Data Transmission in Mesh Topology
for i = 1:numMeshNodes
for j = i+1:numMeshNodes
fprintf(‘Mesh Node %d sends data to Mesh Node %d…\n’, i, j);
pause(transmissionDelay);
fprintf(‘Mesh Node %d received data from Mesh Node %d\n’, j, i);
end
end
% Data Transmission between Topologies via Bridge Node
for i = 1:numStarNodes
fprintf(‘Star Node %d sends data to Bridge Node for Mesh Network…\n’, i);
pause(transmissionDelay);
fprintf(‘Bridge Node received data from Star Node %d\n’, i);
end
for i = 1:numMeshNodes
fprintf(‘Mesh Node %d sends data to Bridge Node for Star Network…\n’, i);
pause(transmissionDelay);
fprintf(‘Bridge Node received data from Mesh Node %d\n’, i);
end
% Total data transmission demonstration
disp(‘Data transmission completed within hybrid network.’);
Explanation of Code
- Star Topology Setup:
- In the star topology, nodes are located in a circular arrangement around the hub at centralHubPosition.
- For each node within the star topology is associated to the hub node with dashed lines.
- Mesh Topology Setup:
- Nodes in the mesh topology are arbitrarily located around the bridgeNodePosition.
- Connections are sketched among every pair of nodes within the mesh topology, which making a fully connected mesh.
- Bridge Node:
- The bridge node performs as a gateway amongst the star and mesh topologies that enabling information to pass between the two sections.
- From the bridge node to both the hub of the star topology, connections are drawn and each node within the mesh topology.
- Data Transmission Simulation:
- For each node in the star topology transmits information to the hub that mimicking traffic in the star segment.
- Nodes in the mesh topology interchange data with each other, which replicating traffic in the mesh segment.
- Data transmission among topologies is replicated by having nodes from each topology interact with the bridge node.
Extensions and Variations
- Advanced Routing:
- Execute the routing logic replicating on how data moves over the hybrid network, which encompassing potential shortest-path algorithms.
- Performance Metrics:
- Assess average latency, throughput, and packet loss within distinct segments of the network.
- Dynamic Network Behavior:
- Dynamically, insert or eliminate the nodes to monitor the effect on the hybrid topology and measure the network resilience.
- Bidirectional Communication:
- Execute bidirectional communication to replicate the real-world traffic amongst star and mesh segments via the bridge node.
Visual Enhancements
To clearly differentiate distinct sections of the hybrid topology, we can utilize the diverse line styles of colors for each connection type. For instance:
- From the bridge node, solid lines for connections.
- Dashed lines for star topology links.
- Dotted lines for mesh topology connections.
By using MATLAB environment, we had effectively expounded the brief simulation technique with relevant coding snippets, their explanation and extension of Hybrid Topology Projects. We will be delivered more details and advanced simulation approach on this topic as needed.
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