Wireless LAN - 802.11
How to Set Fixed MCS in NetSim in WiFi
This Example shows how to set the Fixed MCS for the Data and Control Packets in NetSim Open NetSim > Your Work > Source Code > Open Code Step 1: Open NetSim > Your Work > Source Code > Open Code Step 2: Expand IEEE802_11 Project > Open ...
Simulating a backoff attack in NetSim Wi-Fi (802.11) library
Applicable Version(s) Standard Professional Applicable Release(s v13.1 & v13.2 Introduction In this article, we explain how to simulate a backoff attack by setting a wireless node’s (STA’s) back counter to zero. When the BO counter is forcibly set to ...
How to model interference in NetSim's Wi-Fi (802.11 WLAN) library?
Applicable Versions NetSim Academic NetSim Standard NetSim Pro Applicable Releases v13.2 We explain how to model and analyze interference in WiFi networks via a simple 2AP-2STA scenario. The 2AP-2STA scenario There are two APs and two STAs placed in ...
Setting Wi-Fi MCS based on RSSI per 802.11 rate sensitivity tables
By default in Wi-Fi, NetSim selects the modulation and coding scheme (MCS) by computing the RSSI threshold per Target Packet Error Probability (PEP) for a given Packet size, per the IEEE 802.11 standards. These values are: 802.11 n/ac: Target PEP = ...
Combining MANET and Wi-Fi networks in NetSim simulation
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v12.2 v13.0 TABLE OF CONTENTS Objective Infographic NetSim Scenario Network Configuration Application Configuration Configuration File Structure Performing Simulation via command-line ...
What are the settings to get max throughput (UDP/TCP) for 802.11n and 802.11ac?
Applicable Versions NetSim Academic NetSim Standard NetSim Pro Applicable Releases v12 v13 Max UDP throughput case Consider the following network scenario: To get maximum UDP throughput, the network/device parameters are to be configured for the as ...
How can I simulate walls/obstacles in NetSim Wi-fi / 5G?
NetSim does not allow for walls/obstacles to be directly created in NetSim. The effect of a wall/obstacle can be 'modeled' by changing the path loss exponent in the channel model. NetSim wireless medium contains the different Path loss Models. These ...
Configuring and analyzing Frame Aggregation for WLAN in NetSim
Frame aggregation is a feature of the IEEE 802.11e, 802.11n and 802.11ac wireless LAN standards that increases throughput by sending two or more data frames in a single transmission. Every frame transmitted by an 802.11 device has a significant ...
How to obtain a log of Receiver Sensitivity, Received Power and Phy Data Rate for 802.11 based simulations?
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v12 Receiver Sensitivity, Received Power and Phy Data Rate in 802.11 can be logged into a text or CSV file and then be plotted as per your requirement. Following is one such example ...
How do I write code to see the received power in a simple two node wireless system?
Applicable Versions NetSim Standard NetSim Pro 1. Go to the IEEE802_11 project, please add the code given below IEEE802.11 standard related code (IEEE802_11 Project): Users can select the IEEE802.11 standard, standard related code description to find ...
How can I get plots for SNR in NetSim?
Applicable Versions NetSim Standard NetSim Pro Animation and Metrics Windows already consists of some default plots and tables with respect to the module component. This article explains how users can add SINR custom entries for each node onto the ...
Where is the API to find the SNR in 802.11? How do I use it?
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v11.0 v12 v13 The API to calculate SNR in IEEE802.11 module can be found in ErrorModel.h file. This file is included in the various header files of IEEE802.11 project. To open this ...
How is the PHY rate decided in NetSim 802.11?
Applicable versions NetSim Standard NetSim Pro The PHY Rate when rate adaptation is set to false is based on Received power (RSSI) and SINR. Received_power (at receiver from any node) = Transmit_power - Propagation_Loss Propagation loss (pathloss) is ...
How do I get the buffer size of Access Point?
To print the Received power and BER in NetSim console, follow the steps given below: STEP 1: Open function fn_NetSim_IEEE802_11_MacInit() present in IEEE802_11_Mac.c file inside IEEE802_11 project STEP 2: Inside the function ...
How to print parameters such as Rx Power, BER in WLAN simulation?
Applicable Versions NetSim Standard NetSim Pro To print the Received power and BER along with other parameters such as Packet ID, Transmitter ID, Receiver ID, Received Power, and Simulation Time in NetSim console, follow the steps given below: STEP ...
How do I check the receipt of block ack in 802.11n and 802.11ac?
Create a simple network scenario in internetworks as per the screenshot below Network settings: 1. Grid ength : 500*500m 2. Disable TCP in all nodes 3. WLAN Standard - 802_11ac 4. No. of aggregated packets - 10 5. Generation rate = 100 Mbps (Packet ...
How to enable RTS/CTS mechanism in NetSim WLAN?
RTS Threshold is used to enable/disable RTS/CTS mechanism in NetSim. RTS/CTS is enabled if RTS Threshold value is set less than or equal to the MAC frame size. RTS-CTS is disabled if RTS Threshold value is set greater than the MAC frame size. For eg: ...
Explain the working of NAV in 802.11 WLAN in NetSim?
The network allocation vector (NAV) is a virtual carrier-sensing mechanism which limits the need for physical carrier-sensing at the air interface in order to save power. The MAC layer frame headers contain a duration field that specifies the ...
How do we change CW(min) and DIFS value for a 802.11 Wi-fi node?
Given below is an example of how CW min of a wifi node can be changed 1. Create a simple scenario with 1 AP and 2 wireless nodes 2. Run simulation for 10s 3. Open temp path of NetSim (C:\Users\tetcos\AppData\Local\Temp\NetSim). Right click on ...
How do I change the random back off algorithm in WLAN ?
Applicable Versions NetSim Standard NetSim Pro Applicable Releases v10 v11 v12 v13 In NetSim, Random back off time algorithm can be modified using the function below: Open fn_NetSim_IEEE802_11_CSMACA_RandomBackOffTimeCalculation() function present in ...
How do I write my own fading/shadowing models in WLAN?
Applicable versions NetSim Standard NetSim Pro Go to IEEE802_11_Phy.c file inside IEEE802_11 project and Comment the function propagation_calculate_fadingloss(propagationHandle, packet->nTransmitterId, ifid, pstruEventDetails->nDeviceId, ...
Explain the working & code for data rate versus MCS in 802.11 in NetSim?
In NetSim, data rate is set in a function fn_NetSim_IEEE802_11_PhyOut() present in IEEE802_11_Phy.c file inside IEEE802_11 project In fn_NetSim_IEEE802_11_SetDataRate() function, based on the IEEE802.11 standard (802.11a, 802.11b, 802.11g, 802.11n, ...
802.11 PHY rate between access point and wireless nodes
To monitor the PHY rate between an 802.11 AP and STA do the following Enable packet trace and run the simulation Set a short simulation time because logging this file takes time After simulation open the packet trace In Excel Under transmitted ID ...
What are the propagation (path loss, fading and shadowing) models supported in NetSim?
Path Loss Models: 1. Friis Free Space 2. Log Distance 3. CONST231 HATA Suburban 4. CONST231 HATA Urban 5. HATA Urban 6. HATA Suburban 7. Indoor Office 8. Indoor Factory 9. Indoor Home 10. Two-ray 11. Pathloss Metrix file Fading Models: 1. Rayleigh 2. ...
How do I configure 802.11 simulation for RTS / CTS to work ?
The RTS / CTS mechanism is invoked when the packet size crosses the RTS threshold. And in general you would wish to use RTS / CTS only when transmitting data packets and not control packets. Therefore, when running any experiment, users must a. ...
How are packet collisions modeled in NetSim?
Packet Collision is a theoretical concept. In the real world a packet is not a "physical" entity that can collide. Therefore a "collision" is the interference of two radio waves (of the packets being sent). In NetSim the collision model is as follows ...