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course id
WIFI-TO
duration
3 day(s)
Course Title WIFI: A Tutorial for Those Familiar with Wireless/Cellular Networks
Course type
Aimed At

Anyone who needs to understand the architecture and operation of WiFi networks.

Prerequisites

Those wishing to take this course should have a basic knowledge of 2G/3G wireless technologies.

Course in a Nutshell

This course is aimed specifically at those who work with wireless/cellular radio networks and who also need to understand the operation of WiFi networks, with a particular focus on the interoperability issues.   However, with some customization of the course content, it will be of benefit to other audiences as well.

Customize It!

The course can be customized to your particular background and needs at no additional cost. For a more in-depth coverage, it can be expanded to four or five days.

Learn How To


Course Outline

Part 1: Introduction to IEEE 802.11 and Wi-Fi

  • Wired vs wireless communications
    • Comparison of networks
  • Categories of information transmission
    • Asynchronous, isochronous, and synchronous requirements
    • Voice and data
  • Overview of 802.11 and Wi-Fi
    • General architecture
    • Wi-Fi Alliance
    • IEEE 802.11 task groups
  • 3GPP standardization
    • The need for standardization
    • 3GPP structure


Part 2: Wi-Fi Physical (PHY) Layer

  • Link budget and path loss
    • Calculating maximum range
  • Multipath
    • Doppler and delay spread
    • Diversity combining
  • Basic modulation methods
    • Modulated signal structure
    • Amplitude, frequency, and phase shift keying
  • Direct sequence spread spectrum (802.11b)
    • DSSS methods
    • Processing gain
    • Complementary code keying (CCK)
  • Advanced modulation methods (802.11g/n)
    • Quadrature Amplitude Modulation (QAM)
    • Orthogonal Frequency Division Multiplexing (OFDM)
    • Performance
  • Advanced antennas and multiple-input multiple-output (MIMO)
    • 802.11n MIMO
    • 802.11n operating modes and performance
  • Error control
    • Error detection and correction
    • Automatic repeat request


Part 3: Wi-Fi Medium Access Control (MAC)

  • Carrier-sense multiple access
    • Basic concept and operation
    • Avoiding network instability
  • Distributed Coordination Function (DCF)
    • Channel access and backoff
    • Performance
  • Point Coordination Function (PCF)
    • Channel access and scheduling
    • Performance
  • Quality-of-Service
    • The QoS challenge
    • Overview of 802.11e QoS enhancements
  • Throughput capabilities
    • Frame transmission times
    • Throughput analysis
  • Management operations
    • Connection process
    • Addressing and traffic flow
  • Roaming
    • Layer 2 and Layer 3 roaming
    • Overview of 802.11r Fast BSS Transition
  • Mesh networking
    • Deployment scenarios
    • Overview of 802.11s Mesh Networking


Part 4: Wi-Fi Security

  • Types of security threats
    • Disclosure, integrity, denial-of-service
  • Overview of 802.11i security
    • 802.11i enhancements over WEP
    • Access control
    • Data security
    • 802.11i and IPsec
    • 802.1X port based authentication
    • Portal / web based authentication


Part 5: Wi-Fi Deployment and Optimization

  • Key performance indicators (KPI)
    • Range
    • Data rate and throughput
    • Latency
    • Security
    • Others
  • Project planning
    • Requirements
    • Site survey
    • Coverage vs. capacity planning
    • Access point (AP) installation
    • Network traffic analysis
  • Coexistence
    • Interference characteristics
    • General coexistence strategies
    • Wi-Fi coexisting with other Wi-Fi networks
    • Wi-Fi coexisting with other wireless systems
    • Dynamic frequency selection (DFS) and transmit power control (TPC)
  • Infrastructure consideration
    • WLAN controllers and switches
    • Load balancing and other considerations 


Part 6: Future Directions in Wireless Networking

  • Wi-Fi
    • Higher data rates
    • Other enhancements
  • Seamless roaming
    • Roaming between 3GPP and Wi-Fi
  • LTE vs Wi-Fi
    • Scenarios where Wi-Fi is best
    • Scenarios where LTE is best
    • Wi-Fi vs WiMAX
  • Wrap-up
    • Course Recap and Q/A
    • Evaluations
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