In different arrangements and qualities, WiFi networks appear and it has the capability to satisfy various application areas that range from home networks to extensive enterprise and public networks. Here, we investigate the usual kinds of WiFi networks and few of the prominent simulators that can be employed to design and examine these networks in an efficient manner:

Types of WiFi Networks

1. WiFi LAN (WLAN)

• Explanation: Offering internet access and network connectivity without the requirement for wired relationships, Local Area Networks utilizing WiFi are usual in industries and homes.
• Principles: This kind of network involves IEEE 802.11a/b/g/n/ac/ax such as WiFi 4/5/6/6E/7

2. WiFi Direct

• Explanation: It is mainly helpful for file transfers and direct interaction among devices. It also facilitates device-to-device relationships without an intermediate access point.
• Application Areas: WiFi Direct is employed in gaming, file sharing, and printing.

3. WiFi Hotspots

• Explanation: WiFi Hotspots are considered as public access points and are recognized in hotels, cafes, airports, and offer internet connectivity.
• Application Areas: For travellers and distant employees, this is determined as public internet access.

4. Mesh WiFi Networks

• Explanation: Assuring continuous connectivity throughput, Mesh WiFi networks contain numerous WiFi access points that perform collaboratively to encompass extensive regions with WiFi.
• Application Areas: This type of network is employed in office places, big homes, and outdoor regions, where sufficient coverage is not offered by a single access point.

5. Enterprise WiFi Networks

• Explanation: To assist a huge number of devices and users, it contains extensive, more complicated networks with supplementary protection and management characteristics.
• Application Areas: This network is mainly utilized in educational institutions, big public venues, and industries.

WiFi Network Simulators

1. NS3 (Network Simulator 3)

• Abilities: NS3 is able to simulate WiFi LAN as well as ad hoc networks. It is one of the most extensively employed open-source network simulators. Typically, it provides thorough systems for MAC protocols, mobility, and channel propagation, and assists a scope of WiFi principles.
• Application Areas: Mainly, for simulating complicated network settings and protocols, this is utilized in study and academic goals.

2. OMNeT++

• Abilities: OMNeT++ can be employed for simulating different kinds of network such as WiFi networks, when integrated with the INET system. Generally, OMNeT++ is a modular, extensible, open-source simulation system. For network designing, simulation, and visualization, it offers suitable tools.
• Application Areas: It is appropriate for academic goals and also for modelling and examining network infrastructures, protocols.

3. MATLAB

• Abilities: MATLAB can design the physical layer of wireless communications, simulate end-to-end interaction connections, and carry out network simulations with custom scripts. Along with its Communication Toolbox, MATLAB provides abilities for simulating and exploring wireless communication frameworks such as WiFi networks.
• Application Areas: Signal processing, educational study, and method advancement for wireless networks.

4. GNS3 (Graphical Network Simulator-3)

• Abilities: GNS3 can be utilized to design networks that encompass wireless elements, specifically when employed in combination with digital machines or Docker containers that simulate WiFi platforms, although it is more popular for simulating network devices such as switches and routers.
• Application Areas: This simulator is employed in academic presentations, network infrastructure model, and examining network arrangements.

5. Mininet-WiFi

• Abilities: Mininet-WiFi appends assistance for simulating WiFi networks, and it is determined as an expansion of Mininet. Encompassing assistance for WiFi stations and access points, it permits the users to simulate a thorough network of hosts, links, and switches on a single machine.
• Application Areas: For academic goals, network study, and WiFi, modelling of software-defined networking (SDN) applications.

How to Simulate Wi-Fi networks?

Designing the activities of Wi-Fi devices such as access points, clients, routers, and the interaction among them under different settings, are encompassed when simulating a Wi-Fi network. Typically, factors such as interference, signal capacity, network traffic and the influence of realistic problems are involved in this process. We will direct you on common techniques that can be appropriate to many simulation platforms like MATLAB, Python together with suitable directories, or expert network simulation tools such as OMNeT++ or NS3, even though there are numerous tools and environments for simulating Wi-Fi networks.

Step 1: Choose Your Simulation Environment

• MATLAB: For simulating wireless communications, provides a Communications Toolbox that involves efficiencies, but for extensive WiFi-certain activities, it might need custom scripts.
• NS3: Generally, NS3 is determined as an extensive network simulator that encompasses thorough systems for WiFi networks.
• OMNeT++: It offers widespread assistance along with the INET model for simulating different kinds of networks such as WiFi.

Step 2: Define Your Network Parameters

• Topology: The network topology such as single access point, multiple access point with overlying coverage has to be defined.
• WiFi Standard: To simulate, aim to select the Wi-Fi principles like 802.11a/b/g/n/ac/ax. Typically, this process impacts the frequency bands, channel widths, and data levels.
• Device Characteristics: It is approachable to describe the features of devices like antenna gain, receiver sensitivity, and transmission power.
• Environment: Determining aspects such as distance among devices, problems or barriers, and intervention from other networks, design the realistic platform.

Step 3: Implement the Simulation

In a simulation platform, a common technique includes:

Initial Setup

• With the specified network metrics, focus on initializing the simulation platform.
• Specifically, for the client devices and access points, develop an appropriate framework by determining their positions and arrangements based on the selected WiFi principle.

Signal Propagation Model

• To simulate the attenuation of Wi-Fi signals because of distance and problems, deploy a signal propagation system. Normally, the Log-Distance Path Loss model and the Free Space Path Loss model are the usual systems that are encompassed.

Traffic Model

• In order to simulate the data being transmitted over the network, aim to describe the traffic framework. Normally, this might range from basic periodic data transmissions to complicated frameworks that simulate web browsing or video streaming.

Interference and Noise

• From other networks and electronic devices, design both intervention and background noise. This can influence packet loss and data levels, and impacts the signal-to-noise ratio (SNR).

Step 4: Run the Simulation

• For the specified timeframe, run the simulation. The key performance indicators such as delay, signal strength, throughput, and packet loss have to be tracked and logged.

Step 5: Analyze the Results

• To assess the effectiveness of the Wi-Fi network under different situations, it is beneficial to examine the gathered data. This process assists in interpreting the activities of the network and detecting possible problems or valuable regions for enhancement.

Example in MATLAB:

To design certain factors of the WiFi interaction procedure, the users of MATLAB can manipulate the Wireless Network Simulator model when it is accessible or employ the Communications Toolbox. By integrating the above specified steps, you will possibly be required to write custom scripts to simulate the entire WiFi network dynamics.

Generally, MATLAB provides tutorials and instances that can assist in arranging and executing your simulation. To obtain extensive syntax and operations, the process of discussing the MATLAB documentation for the Communications Toolbox or any accessible toolboxes relevant to wireless communication is considered as an excellent starting point.