Course Outline

I. Introduction to WiMAX

A. Making The Case for Broadband Wireless Access (BWA)

1. Wireless broadband applications
   
2. Current
   • Residential broadband
   • DSL-level service for SOHO/SMB
   • 1/E1-level service for enterprise
   • Data/Voice/Video
   • Wi-Fi hotspot backhaul
   • Cellular backhaul
3. Near Term, Mobile broadband wireless access
4. Why another wireless standard?
   • Why not use Wi-Fi?
   • Why not use 3G?
   • What about proprietary BWA solutions?
   • What about wireless broadband over satellite?

B. Organizations and Standards Bodies

1. International Telecommunications Union (ITU) and National spectrum allocation agencies
2. Institute of Electrical and Electronic Engineers (incl. IEEE 802.16, and understanding the 802.16 Task Groups)
   • 802.16
   • 802.16a
   • 802.16c
   • 802.16e
   • 802.16f
   • 802.16i
3. ETSI and HiperMAN
4. WiMAX Forum (incl. 802.16a compliance)
   • Compliance procedures
   • Conformance tests
   • Cross-vendor interoperability
5. System profiles
6. Test protocols

II. Broadband RF Fundamentals

A. International spectrum usage

1. Frequency channels
2. Licensed
3. License-exempt
4. Power and frequency regulations
   

B. Propagation

1. RF Math
2. dB
3. Basic Rules and Formulas

C. Antennas

1. Sectors
2. Multipath
3. Attenuation
4. Adaptive Antenna Systems (AAS)
   • a. Dynamic Frequency Selection (DFS)
   • Transmit Power Control (TPC)
   • Multiple input, Multiple Output (MIMO)
   • Space Time Coding (STC)
   • Spatial diversity
5. Installation
6. Lightning Protection

D. Site survey

1. Automated site survey
2. Manual site survey

E. Link Budget Analysis

F. Station placement

G. Capacity planning

H. Coexistence with other wireless networks

1. Cellular
2. Wi-Fi
   
   

III. 802.16a Physical Layer Specifications and Features

A. Channel Characteristics

1. Speed (Average 70 Mbps, Peak 268 Mbps, etc.)
2. Frequency ranges
   • a. Unlicensed bands (900 MHz, 2.4 GHz, 5.8 GHz)
   • b. Licensed bands (700 MHz, 1.9 GHz, 2.3 GHz,
3. 2.5 to 2.7 GHz, 3.5 GHz, 10.5 GHz)
4. LoS, near-LoS, and NLoS (non-LoS)

B. Phy layer specifications

1. Single Carrier Phy
2. 256 Point FFT OFDM Phy

C. 2048 Point FFT OFDMA Phy

1. OFDM versus CDMA
2. 802.16a Phy features
   • Licensed vs. unlicensed
   • Choosing channel widths
   • Advanced error correction
   • Adaptive Modulation
   • Support for TDD and FDD duplexing

D. Air Interface profiles for 802.16a

1. Wireless MAN-OFDM
   • Licensed frequency ranges
   • TDD or FDD
2. Wireless HUMAN (incl. Unlicensed frequency ranges, TDD)

E. WiMAX Components

1. Base Station (BS)
2. Subscriber Station (SS)
3. Antenna systems
   
   

IV. 802.16a MAC Layer Specifications and Features

A. Multiplexing and Multiple Access

1. TDM/TDMA (Uplink/Downlink [UL/DL] etc.)

B. Scalability

C. Quality of Service (QoS)

1. Connection-oriented features (incl. Collision-free access, Guaranteed delay, Voice over WiMAX, Video over WiMAX)
2. Service Level Agreements (SLA)
3. Automatic Retransmission Request (ARQ)

D. Automatic Power Control (APC)

E. MAC Details

1. Service Specific CS
2. ATM CS
3. Packet CS
4. MAC CPS
5. MAC header formats
6. Types of sub-headers
7. MAC Management messages
8. Scheduling
9. Concatenation
10. Fragmentation
11. Packing
12. ARQ
13. Polling
14. Grants

F. Point-to-Multipoint mode

1. Bandwidth allocation techniques
2. Connection orientation
3. Service flows
4. UL/DL QoS management
5. QoS parameters for PDU
6. Connection management functions
7. Connections maintenance
8. SS identification (incl. MAC address, CID (connection identifier))
9. Management connections (incl. Basic Management Connection, Primary Management Connection, Secondary Management Connection
10. WiMAX Service Classes
    • Unsolicited Grant Services (UGS)
    • Real-time Polling Service (rtPS)
    • Non-real-time Polling Service (nrtPS)
    • Best effort Services (BE)
    • Application and network interface mapping
11. Automatic Repeat Request (ARQ) (incl. Mesh mode)
12. Benefits of Mesh networks

G. WiFi Mesh (802.11s)

1. Proprietary Mesh networks
2. Traffic between nodes (incl. Distributed scheduling, Centralized scheduling)
3. Mesh entities
4. Neighbors and Neighborhoods
5. Mesh Links (incl. Node ID(NID), Link ID (LID), Allocating capacity)
   
   

V. WiMAX Security

A. Vulnerabilities of wireless systems

B. Wireless systems“Security - Best Practices”

1. Security policy
2. Security procedure
3. Intrusion Prevention Systems (IDS/IPS)
4. Authentication, Authorization, and Accounting (AAA)
5. RADIUS
6. 802.1x Port-based authentication

C. WiMAX Security Overview

1. Subscriber privacy
2. System operator theft of service protection
3. Security components (incl. Encapsulation protocol, Key Management protocol and PKM)
4. X.509 certificates
5. Encryption algorithms (incl. 3DES, RSA public key encryption (PKCS #1), and AES)
6. Authorization Key (AK)
7. Traffic Encryption Key (TEK)
8. Security Associations (incl. Primary, Static, Dynamic)
9. SS authorization and AK exchange overview
10. TEK exchange overview
11. TEK exchange overview for Mesh mode

D. Implementing WiMAX Security

1. Public Key Infrastructure (PKI)
2. Wireless Billing systems