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Wireless LAN Training

Indroduction:

The 802.11 family includes over-the-air modulation techniques that use the same basic protocol.

The most popular are those defined by the 802.11b and 802.11g protocols, which are amendments to the original standard. 802.11-1997 was the first wireless networking standard, but 802.11b was the first widely accepted one, followed by 802.11g and 802.11n. Security was originally purposefully weak due to export requirements of some governments and was later enhanced via the 802.11i amendment after governmental and legislative changes. 802.11n is a new multi-streaming modulation technique. Other standards in the family (c–f, h, j) are service amendments and extensions or corrections to the previous specifications.

802.11n is a recent amendment which improves upon the previous 802.11 standards by adding multiple-input multiple-output (MIMO) and many other newer features. The IEEE has approved the amendment and it was published in October 2009.Prior to the final ratification, enterprises were already migrating to 802.11n networks based on the Wi-Fi Alliance's certification of products conforming to a 2007 draft of the 802.11n proposal.

This workshop help the researchers and developers to understand the Wireless Network Standard and its layers MAC, PHY and their security aspects and Quality Of Service details.

Course Contents

Day 1
Basics of Networking Wi-Fi Overview Workshop and Demo of Networking using Linux
Introduction to OSI Layers WLAN introduction and applications Demos on Basic networking commands in Linux
Network topologies Relationship between IEEE 802.11 and WiFi Introduction to device driver
Networking devices (Hub, Switch, …) BSS, IBSS, ESS, DS, BSSID, SSID Setting up a simple wireless network (Infrastructure, Ad-hoc)
Introduction to Addressing Schemes (IP, MAC) IEEE 802.11 set of standards
Spectrum of operation
AP and STA hardware structure
WLAN deployment scenarios
Day 2
Physical Layer of IEEE 802.11 MAC layer in 802.11 Workshop and Demos
RF fundamentals: path loss and fading DCF Protocol in WLAN Demo on variation of Signal strength and data rate based on mobility
Basics of wireless channels CSMA/CA, BEB Introduction to Wireshark
RSSI, data rate relationship RTS/CTS and Fragmentation Exploring RTS-CTS handshake
Key challenges for the 802.11 PHY. layer Inter frame spacing Fragmentation in action.
DSSS & OFDM PHY: Fundamentals and data rate support PCF Protocol in WLAN Polling operation
Use of OFDM in 802.11
Rate Adaptation in WLAN
Day 3
WLAN framing and management Network Entry Process and special features Workshop and Demo of Performance Measurement
MAC frames and fields Network entry process Performance Measurement using iperf/jperf
MAC header Timing and legacy power techniques
Frames Necessity of Protection schemes
Data frame
Control frame
Management frame
Day 4
High Speed WLAN QoS in WLAN Workshop and Demo
Introduction to 802.11n EDCF & AC Exploring beacon frame
Physical layer enhancements of 802.11n HCF & TS Observation of Network entry process
Block-ACK, DLS, APSD
Day 5
Security in WLAN Introduction to WLAN Security 802.11n MAC
Basics of Network Security WEP – Encapsulation & Decapsulation Introduction to MAC Layer Enhancements
Confidentiality, Integrity and Authentication RC4 Algorithm Aggregation (MSDU,MPDU)
Security issues in wired and wireless LAN systems WPA, WPA2, 802.1x Block-ack
Recent trends Workshop and Demo on Security
802.11n Demonstration
Sniffing demo with wireshark for 802.11n frames performance evaluation demo

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