UMTS Air Interface
This course provides a comprehensive and detailed explanation of the UMTS Air Interface. In so doing, the architecture of the radio interface, 6 channel structures, the CDMA physical layer, the protocols, procedures and operation will all be discussed. For a complete picture, the course also includes focus on enhancements to the air interface through HSPA.
Section 1 - The UMTS Air Interface
Topic areas covered include:
- Frequency Bands:
- ITU Regions.
- Mobile Frequencies.
- UMTS Bands.
- CDMA Basics:
- Codes.
- User Channel.
- Spreading and De-spreading.
- Code Requirements.
- 4 Modulation Techniques and Coding:
- Basic Modulation Techniques.
- UMTS Modulation.
- Adaptive Modulation and Coding.
- Cell Planning for UMTS:
- UMTS Cells and Sectors.
- Scrambling Codes.
- Cell Footprint.
- Adjusting a Cell to Provide Coverage.
- Frequency Layers.
Section 2 - UMTS Structure and Channels
Topic areas covered include:
- UMTS Air Interface Architecture:
- The Non Access Stratum.
- The Access Stratum.
- UMTS Channels.
- UMTS Channel Types.
- Logical Channel Architecture:
- Logical Channels - Control.
- Logical Channels - Traffic.
- MBMS Channels.
- Transport Channel Architecture:
- UMTS Transport Channels.
- Physical Channels:
- Downlink Physical Channels.
- Uplink Physical Channels.
- Channel Mapping:
- Logical to Transport Mapping.
- Downlink Transport to Physical Channel Mapping.
- FDD Uplink Transport to Physical Channel Mapping.
Section 3 - UMTS Physical Layer
Topic areas covered include:
- UMTS Spread Spectrum:
- Channel Rates.
- Spreading.
- Direct Sequence Spread Spectrum.
- De-spreading.
- UMTS Code.
- Synchronization Codes:
- P-SCH and S-SCH.
- Scrambling Codes:
- Downlink Scrambling Codes.
- Uplink Scrambling Codes.
- Spreading Codes:
- OVSF Codes.
- Code Allocation.
- Static Codes.
- Processing Gain.
- Basic DSSS System:
- Transmission.
- Reception.
- Rake Receiver.
- Uplink Code Processing:
- Dedicated Uplink Channels.
- Common Uplink Channels.
- Downlink Code Processing:
- Channel Combining.
- Frame Timing:
- Node B Timing.
- Cell Timing.
- UE Timing.
Section 4 - UMTS Physical Channels
Topic areas covered include:
- Downlink Physical Channels:
- CPICH.
- CPICH Measurements.
- Example CPICH Measurements.
- Primary Common Control Physical Channel:
- P-CCPCH.
- Primary and Secondary Synchronization Channel:
- P-SCH and S-SCH.
- S-CCPCH.
- DPCH.
- PICH.
- Uplink Physical Channels:
- DPCH.
- PRACH:
- AICH.
- Physical Channel Timing
- Compressed Mode:
- Transmission Gap Position.
- Compressed Mode Pattern Parameters.
Section 5 - UMTS Radio Resource Control
Topic areas covered include:
- RRC Functions:
- RRC Architecture.
- RRC Procedures.
- Radio Bearers.
- Idle Mode Procedures:
- Broadcast System Information.
- System Information Blocks.
- Paging.
- Connected Mode:
- Identities.
- RRC Connection.
- Direct Transfer.
- Paging.
- UE Capability.
- Security.
- Radio Bearer Procedures.
Section 6 - UMTS Operational Procedures
Topic areas covered include:
- UMTS Initial Procedures:
- PLMN Selection.
- Cell Selection.
- UMTS Attach.
- Initial Direct Transfer.
- Power Control:
- Uplink Power Control.
- Downlink Power Control.
- Circuit Switched Operation:
- Radio Bearer Setup.
- Speech Transport Format Combinations.
- RRC Connection Release.
- Packet Switched Operation:
- Activating the Packet Switched RAB.
- Packet Switched RAB.
- Transport Format Combination for Packet Data.
- Volume Triggers.
- Data Sub-states.
Section 7 - UMTS Mobility and Interworking
Topic areas covered include:
- Idle Mode Mobility:
- Cell Reselection.
- Cell Reselection Criteria.
- Connected Mode Mobility:
- Periodic Measurements.
- Event Measurements.
- Intra-Frequency Measurement Reporting.
- Measurement Control.
- Measurement Report.
- Soft Handovers:
- Rake Receiver.
- Rake Receiver in Soft Handover.
- Soft Handover Regions.
- Soft Handover Triggers.
- Active Set Update.
- Hard Handover
- Common State Mobility:
- Cell Update Procedure.
- URA Update Procedure.
- Interworking with GERAN:
- Inter-RAT Mobility Messages.
- Inter-RAT Measurements.