Course Number: 501
Length: 2 Days
802.11n training course by TONEX will cover major aspects of 802.11n with in depth information, example implementations, case studies and practical guidance to give your team members a running start.
802.11n (Wireless LANs) — higher throughput improvements using MIMO (multiple input, multiple output antennas) — course provides a comprehensive understanding of the 802.11n architecture and technology. 802.11n builds upon previous 802.11 standards by adding MIMO. Multiple transmitter and receiver antennas are used in MIMO to allow for increased data throughput through spatial multiplexing and increased range by exploiting the spatial diversity, perhaps through coding schemes like Alamouti coding.
MIMO technology constitutes a breakthrough in the design of wireless communications systems, and is already at the core of several wireless standards including 802.11n.
Exploiting multipath scattering, MIMO techniques deliver significant performance enhancements in terms of data transmission rate and interference reduction.
Who Should Attend
Engineers, developers, managers and anyone else who wants to learn 802.11n.
Objectives
Upon completion of 802.11n training, the attendees will:- Understand the basics of 802.11n architecture
- Describe the key components in the 802.11n architecture
- Sketch the connectivity of 802.11n network components and their importance
- List basic 802.11n protocols
- Understand the basics of 802.11 protocols
- Understanding the basics of OFDM
- Understand the basics of MIMO and its role in 802.11n
- Understand the basics of 802.11n PHY
- Understand the basics of 802.11n MAC
- Identify the issues with 802.11n implementation
- Identify the importance of 802.11n functional and performance requirements and RF issues
- Discuss 802.11n deployment considerations
- Describe 802.11n QoS and security mechanisms
- Discover challenges with deploying 802.11n
- Identify 802.11n network monitoring and performance tuning
Outline
Introduction to Wireless Networking- Overview of 802.11 Networks
- IEEE 802 Network Technology Overview
- 802.11™- Nomenclature and Design
- 802.11™- Network Operations
- Mobility Support
802.11™- standards
- 802.11a
- 802.11b
- 802.11g
- 802.11n
- 802.11ac
- 802.11p-2010
- 802.11r-2008
- 802.11u-2011
- 802.11v-2011
- 802.11w-2009
- 802.11y-2008
- 802.11z™-2010
- Channels and International Compatibility
- Certification
- MAC and PHY Specifications
Principles of OFDM
- Introduction to Orthogonal Frequency-Division Multiplexing (OFDM)
- OFDM Characteristics and Principles of Operation
- Orthogonality in OFDM
- Guard Interval for Elimination of Inter-symbol Interference
- Simplified Equalization
- Channel Coding and Interleaving
- Adaptive Transmission
- OFDM Extended with Multiple Access
- Space Diversity
- Linear Transmitter Power Amplifier
Introduction to MIMO (Multiple Input, Multiple Output) Antennas
- MIMO Wireless Communication
- MIMO Channel and Signal Model
- MIMO Transceiver Design
- MIMO in Wireless Networks
- MIMO in 802.11n
- Capacity Limits of MIMO Systems
- Space–Time Coding for Wireless Communications: Principles and Applications
- Space–Time Coding Principles
- Fundamentals of 802.11n Receiver Design
- Reception of Uncoded Signals
- MIMO Receivers for Uncoded Signals
- MIMO Receivers for Coded Signals
802.11n Physical Layer (PHY) Overview
- Channel Width
- MAC Efficiency Enhancements
- Channel and Radio Modes
- Protection
- MIMO PHY
- Structure of an Operating Channel
- Modulation and Coding
- Interleaver
- Space-Time Block Coding (STBC)
- Modulation Rates
- MIMO and Transmission Modes
- Greenfield
- Mixed Mode
- PLCP and PMD Principles
- PHY-SAP detailed service specification
- PHY-TXENDrequest
- PHY-TXENDconfirm
- PHY-CCAindication
- PHY-RXENDindication
- PHY-CONFIGrequest
- High Throughput (HT) PHY specification
- Space-time block coding (STBC)
- Transmission in 20 MHz HT format
- Transmission in 40 MHz HT format
- Transmission in MCS format
- Transmission with a short GI
802.11n PHY Interface
- PHY Interface
- PLCP Packet Format
- Operating Mode
- Modulation and Coding Scheme (MCS)
- Transmission in the Upper/Lower MHz of a MHz Channel
- Legacy Field Transmission
- The High Throughput Preamble
- QAM Mapping Space-Time-Block-Coding (STBC)
- Pilot Subcarriers
802.11n OFDM Modulation
- Spatial Mapping
- Transmission in MHz HT Mode
- Transmission in HT Duplicate Mode
- Transmission with a Short Guard Interval
- Legacy Duplicate Transmission
Channel Numbering and Channelization
- Channel Allocation in the GHz Band
- Transmit Spectrum Mask
- Spectral Flatness
- Transmit Power
- Transmit Center Frequency Tolerance
- Packet Alignment
- Reduced Interframe Space (RIFS)
Beamforming
- Non Compressed Steering Matrix Feedback
- Compressed Steering Matrix Feedback
High Throughput Preamble Format for Sounding PPDUs
- Sounding with a Zero Length Packet
- Sounding PPDU for Calibration
- Sounding PPDU for Channel Quality Assessment
General Description of 802.11n MAC Enhancements
- Frame Formats
- MAC Frame Formats
- Control Frames
- Block Ack (BA) MPDU
- Format of BAR MPDU
- Management Frame Formats
- Management Action Frames
- MIMO Power Save Management Action Frame
- MIMO Channel Measurement Frame
- MIMO CSI Matrices Frame
- MIMO Uncompressed Steering Matrices Frame
- Compressed Steering Matrices Feedback Frame
- Antenna Selection Indices Feedback Frame
- Aggregated MPDU Format (A-MPDU)
- MAC Sub-Layer Functional Description
- Protection Mechanisms
- Aggregation Exchange Sequences and Related Rules
- Security
- Link Adaptation
- MAC Sub-Layer Management
- Probe Response Rule
- Coexistence Management
- Channel Management
- Rules for Operation in /MHz BSS
- STA Asking for MIMO Power Save Support
- Channel Management at the AP
Planning a 802.11N Wireless LAN
- Managing a 802.11 Implementation
- Requirements Analysis Steps
- Analyzing the Feasibility of a 802.11n
- 802.11n Design
802.11n Access Point (AP) 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
- Complete Coverage of Target Space
- Changing Environment
- MIMO Considerations in Capacity and Coverage
- 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
- Designing an 802.11n Wireless LAN
- Preparing for Operational Support of an 802.11n Wireless LAN
- 802.11n Management Operations
- Security Architecture
- 802.11i: Robust Security Networks, TKIP, and CCMP
- User Authentication with 802.1X
- QoS Architecture
- Site Planning and Project Management
- 802.11n Network Analysis
- 802.11n Performance Tuning
- 802.11n Vendors
- Lessons learned from 802.11n Implementations and Deployments
- Evolution of 802.11ac