Quick Explanation
- Supports RTS-CTS-Frame-acknowledgement protocol
- Supports frame fragmentation with acknowledgement
- Supports slot contention arbiter
Protocol
- IEEE 802.11
- IEEE 802.11a
- IEEE 802.11b
- IEEE 802.11g
- IEEE 802.11n
- IEEE 802.11ac
- IEEE 802.11aj
Model Link
Overview
VisualSim Wireless-Fidelity library provides a unique system level modelling environment to the users. This library is used for identifying different issues related to hidden terminal problem and exposed terminal problems. Wi-Fi provides a secure computer networking gateway, firewall, DHCP server and an intrusion detection system among many other features. VisualSim has been employed for design, validation, and evaluation of new protocols for Wi-Fi networks since it offers cost efficiency, scalability, and reproducibility.
Standards Supported
IEEE 802.11 (https://standards.ieee.org/findstds/standard/802.11-2016.html )
IEEE 802.11a (http://standards.ieee.org/findstds/standard/802.11a-1999.html )
IEEE 802.11b (http://standards.ieee.org/findstds/standard/802.11b-1999.html )
IEEE 802.11g (http://standards.ieee.org/findstds/standard/802.11g-2003.html)
Parameters used
An access point or a wireless router acting as an access point is typically configured with a utility program provided by the manufacturer of the device. Some of the blocks and parameters used in this library are:
- WIF_Source: This block provides the user with the required traffic
- Data_Rate: This parameter is used to specify the rate at which packets are sent
- Operating_Freq: This parameter specifies the frequency at which packets are being sent
Features
A Basic Service Set is a set of wireless stations (STA) controlled by a single coordination function (CF). The CF is a logical function that determines when a STA transmits and when it receives. IEEE 802.11 wireless LANs use a media access control protocol called Carrier Sense Multiple Access with Collision Avoidance(CSMA/CA). The VisualSim Wi-Fi library uses Distributed Control Function (DCF) for collision avoidance
Some of the key features of this block are:
- WPA and WPA2
- EAP authentication standard
- Full Duplex
WiFi
Wi-Fi stands for Wireless Fidelity. It was developed by the Institute of Electrical and Electronics Engineers (IEEE) in 1997. Wi-Fi is a technology for wireless local area networking with devices on the IEEE 802.11 standards. Wi-Fi most commonly uses the 2.4 GHz and 5.8 GHz SHF ISM radio bands. Wi-Fi nodes operating in ad-hoc mode refers to devices talking directly to each other without the need to talk first to an access point. The IEEE 802.11 standard is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communication in the 2, 4, 3.6, 5 and 60 GHz frequency bands.
