This course provides an understanding of the wireless LAN technologies, applications and standards. Other important topics such as protocol layers, quality of service, throughput, coverage, interoperability, interference and security are discussed.Basic RF theory, propagation, link budget math, troubleshooting, WLAN security foundations and site survey are explored.
After a general introduction to wireless networks, this practical course moves quickly into the details of the wireless LANs standards (802.11a, 802.11b, 802.11g, 802.11n), 802.11 physical (DSSS and OFDM), MAC (Media Access Control), detailed 802.11 framing, WEP (Wired Equivalent Privacy protocol), WPA/WPA2, TKIP, 802.1x, Enhanced MAC (IEEE 802.11e), 802.11f, 802.11i, QoS Requirements, Inter-frame Spacing, EDCF Access, HCF for QBSS, Enhanced Security management operations, and the PCF (point coordination function) are all covered in detail. Real-world experiences through case studies and implementation tips are located throughout the course reference material.
Objectives
After successfully completing the course the students will:
Understand the basic concepts of 802.11
Be able to understand the technical implementation of different types of Wireless LANs
Gain a general understanding of Wireless LANs systems coverage and capacity
Be able to select the most effective wireless LAN type from a wide assortment of recent and emerging standards
Examine an Independent assessment of competing wireless LAN technologies
Be able to perform a more efficient design and operational support of wireless LANs because of an understanding of wireless LAN protocol operations and frame structures
Course Outline
Introduction
Application and Services
Unlicensed Frequency Bands
802.11 Family of Standards
802.11 Benefits
Wireless LAN Applications
Current Deployments
Wireless Network Design
Wireless Security
Implementation Scenarios and Market Opportunities
802.11 Protocol Stack
The Physical Medium Dependent Layer
The Data Link Layer
The Network Layer
The Transport Layer
802.11 Physical Layer Procedures
Physical Layer (PHY) Specifications
Channel Spacing, Modulation
InfraRed, FHSS, DSSS, OFDM
Physical Layer Architecture
Physical Layer Operations
IEEE 802.11 Frequency Hopping Spread Spectrum (FHSS) Physical Layer
IEEE 802.11 Direct Sequence Spread Spectrum (DSSS) Physical Layer (802.11b)
IEEE 802.11 High Rate Direct Sequence Spread Spectrum (HR-DSSS) Physical Layer
IEEE 802.11 Orthogonal Frequency Division Multiplexing (OFDM) Physical Layer (802.11a,g,n)
Wireless LAN Medium Access Control (MAC)
IEEE 802.11 MAC Layer Operations
MAC Frame Structure
802.11 Framing in Detail
MAC Frame Type and Class
Access Methods
Security
Synchronization
Power Management
Roaming
QoS on IEEE 802.11
802.11 Security
802.11 Security Basics
Standard Defenses
Denial of Service Attacks
Hackers
Intrusion Detection Systems
Network Monitoring
802.11 Threats
Securing 802.11 Networks
Introduction to Crythrography and Encryption
802.11 Authentication & Encryption
Overview of Various Security Technologies, Including WEP, 802.1x, LEAP/EAP and VPNs
Wired Equivalent Privacy (WEP)
WiFi Protected Access (WPA) /WPA2
WEP and TKIP
802.11i and RSN
EAP Derivatives
Virtual Private Networks (VPNs)
Rogue Detection, IDS, Policy Enforcement
Policy Management
Wireless Policy Violations
AAA and Radius
802.1X Authentication and Access Control
802.1X Key Management
Message Integrity
Three Models of Connectivity
Setting Up the DHCP Server
Setting Up the Routing and Remote Access (VPN) Server
Setting Up IPSec Over L2TP
Setting Up the VPN Client
User-Specific Security Policies and Roaming Across Subnets
Best Practices for a Secure Wireless Solution
Tools and Products
Planning a Wireless LAN
Managing a 802.11 Implementation
Requirements Analysis Steps
Types of Wireless LAN Requirements
Defining Wireless LAN Requirements
Analyzing the Feasibility of a Wireless LAN
802.11 design
Access Point Locations
Access Point Frequency Assignments
Complete Coverage (no gaps)
Adequate Capacity
Rules of Thumb Don't Work
Design Based on Extensive Measurements
Coverage and Capacity
Propagation and Coverage
Complete Coverage of Target Space
Changing Environment
Interference Sources
Capacity
Enough Capacity for Expected Usage
Consideration of High- and Low-Density Areas Throughput
Network Scenarios
Interworking and Coexistence with Mobile and Cellular Networks
Implementing a Wireless LAN
Designing a Wireless LAN
Preparing for Operational Support of a Wireless LAN
Installing a Wireless LAN
Future Development
Considerations
Security - WEP, 802.1x, 802.11i
Fragmentation, Equalizers and RAKE Receivers
Installation Options
Performance
Security
Multivendor Operability
QoS Enhancements
Security Enhancements WEP 2
Dynamic Frequency Selection, Transmit Power Control
Upcoming Standards and Future Trends
The Evolution of HIPERLAN
Forthcoming IR Standards
Other RF Standards: DECT, Bluetooth, WATM, HomeRF
Integration of WLAN and Cellular (Mobile Networks)
3GPP/3GPP2 Standards and Mobile IP
The Evolution of IEEE 802.11n and 4G
MIMO (Multiple-Input Multiple-Output)
Development of MIMO in 802.11 Wireless Communications
Important Achievements in MIMO in 802.11
Promises of MIMO Technology
Voice Over 802.11
Delivery of Voice-Over-IP (VoIP) Services
802.11 and Softswitch
QoS of Wi-Fi and VoIP
Component of Wi-Fi for Reliable, High-Quality Voice Transmission
Real Examples and Applications
Special Case Study: CDMA2000/WiMAX/UMTS and 802.11 Interworking (Optional)
Anyone who requires in-depth knowledge of wireless LANs and their connection to current and future mobile and cellular networks. Anyone who needs to implement a wireless extension to an existing LAN-Network. Design engineers, field engineers, test engineers, software engineers and hardware engineers will benefit from the workshops.
Prerequisites
Basic understanding of wireless, radio communications and IP is recommended.
