WiMAX (Worldwide Interoperability for Microwave Access- IEEE 802.16) is a standards-based wireless
technology (an implementation of 802.16: 802.16-2004 and 802.16e) that provides high-throughput broadband connections.
WiMAX can be used for a number of applications, including "last mile" broadband connections, hotspot
and cellular backhaul, and high-speed enterprise connectivity for businesses.
This course provides a detailed technical view of WiMax component and network equipment esign. It is an advanced
course reviewing the technical specifications and standards from a design point of view.
After a general introduction to wireless networks, this practical course moves quickly into the WiMax (802.16-2004,
802.16e) protocols, PHY, MAC (Media Access Control), framing, TDD/FDD, FDMA/OFDMA, planning and design. Real-world
experiences through case studies and implementation tips located throughout the course reference material. |
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Broadband Wireless Access: an introduction to WiMAX and IEEE 802.16
- WiMAX as a WirelessMAN Technology
- Regulations
- 802.16 Benefits
- Application and Services
- "Last Mile" Broadband Connections
- Hotspot and Cellular Backhaul
- High-speed Enterprise connectivity
- 802.16 Frequency Bands
- 802.16 Family of Standards
- Current Deployments
- IEEE 802.16-2004 enhanced support for indoor CPE
- IEEE 802.16e as an extension to EEE 802.16-2004
- Implementation Scenarios and Market Opportunities
- System Profiles
WiMax Technical Information
- The Interoperability Challenge
- 802.16a amendment: 2 to 11GHz
- IEEE 802.16a and ETSI HiperMAN standards
- System Profiles for 2 - 11 GHz
- 802.16a and HiperMAN standards
- The MAC profiles for both WirelessMAN (Licensed) and WirelessHUMAN (License-exempt)
- System Profiles for 10-66 GHz
- IEEE 802.16c
- 802.16-2004 and 802.16e
- Basic ATM system MAC profile
- Basic IP system MAC profile
- 25 MHz wide channel for (typically for U.S. deployments) use in the 10-66 GHz range
- 28 MHz wide channel for (typically European deployments) use in the 10-66 GHz range
- Sub-profiles: FDD and TDD
WiMAX Protocols
- The Physical Medium Dependent Layer
- The Data Link Layer
- ATM and Packet CS
- The Network Layer
- The Transport Layer
- Physical Layer (PHY) specifications
- Channel Spacing, Modulation
- Physical Layer Architecture
- Physical Layer Operations
- 802.16 PHY (SCa, FDMA, OFDMA and SCOFDM)
- Orthogonal Frequency Division Multiplexing (OFDM)
- Orthogonal Frequency Division Multiple Access (OFDMA)
- Scheduling and Link Adaptation
- Adaptive Modulation Scheme
- Binary Phase Shift Keying (BPSK)
- Quadrature Phase Shift Keying (QPSK)
- 16-Quadrature Amplitude Modulation (QAM)
- 64-QAM
- 256-QAM
- Security
- DES encryption/decryption
- Variable-rate Read-Solomon (RS)/Convolutional Coding (CC) scheme
- ARQ active on all connections
- TDD vs. FDD
- Symmetric UL/DL traffic
- 256 point FFT OFDM PHY mode
- Scalable OFDMA (SOFDMA) Physical Layer in IEEE 802.16 WirelessMAN
- STC and Other Standard-Compliant Diversity Schemes
- Mutlicarrier Design Requirements and Tradeoffs
- The Basics of OFDMA Frame Structure
- Subcarrier Allocation Modes
- Diversity Options
- Ranging in OFDMA
- Channel Coding
- PHY Transmit diversity in the Downlink (DL)
- H-ARQ (Hybrid ARQ)
- Space Time Coding (STC)
- Adaptive Antenna Systems (AAS)
- Multiple Input, Multiple Output (MIMO)
- MIMO for Throughput and Range
- Spatial Division Multiple Access (SDMA)
- Other Diversity Schemes
802.16 Physical Layer Procedures (PHY)
- The original 802.16 standard and the 10-66GHz frequency band
- 802.16 Service Areas
- WiMAX’s technology for LOS and NLOS environments
- PHY Considerations
- Effect of multipath
- High Capacity Links on both the Uplink and the Downlink
- 802.16a Extension and a Lower Frequency of 2-11GHz
- WirelessMAN-SC PHY
- WirelessMAN-SCa PHY
- WirelessMAN-FDMA PHY
- WirelessMAN-OFDMA PHY
- 802.16-2004 and 802.16e PHY
- What are Non line-of-sight (NLOS) Connections?
- Time Division Duplexing (TDD)
- Frequency Division Duplexing (FDD)
- The 802.16e and Mobile 802.16 Clients
- Hand-off Between 802.16 Base Stations
802.16 Medium Access Control (MAC)
- MAC Layer Operations
- MAC Frame Structure
- Framing in Detail
- MAC Frame Type and Classes
- Access Methods
- Synchronization
- Power management
- Variable Length Protocol Data Unit (PDU)
- Self-correcting Bandwidth Request/Grant Scheme
- Link adaptation and Automatic Repeat Request (ARQ) functions
- Fast path activities (such as scheduling, packing, fragmentation, and ARQ)
- UL and DL schedulers
- QoS on IEEE 802.16
- High bit rates (up to 268 mbps each way)
- Delivering ATM Compatible QoS: UGS, rtPS, nrtPS, and Best Effort
- Implementation Challenges on MAC and QoS
Security Sublayer
- Security Basics
- Standard Defenses
- Denial of Service Attacks
- Hackers
- Intrusion Detection Systems
- Network Monitoring
- Threats
- Securing 802.16 Networks
- PKM Protocol
- 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
WiMAX RF Models
- Fixed, nomadic and mobile channel models
- How to model a radio channel?
- Fixed and Nomadic channel models
- Fading characteristics fade distribution, K-Factor
- Modified Stanford University Interim (SUI) channel models
- SUI channel models implementation
- Mobile channel models
- Mobile channel models implementation
- Simulation Results
WIMAX RF and Core Network Component and Network Design
- Engineering planning, design, deployment and optimization
- Radio and traffic engineering
- Site engineering and planning
- Network, backhaul and core engineering
- Commissioning and troubleshooting
- Network management systems
- Component design principals
- WiMax PHY and MAC parameters
- Simulation approaches
- Case studies
802.16 System Profiles
- WiMAX Basic Profiles for WirelessMAN OFDM
- WiMAX Basic Profiles for WirelessMAN OFDMA
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