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UMTS (W-CDMA) is one of the third generation wireless systems. UMTS is designed
to increase a subscriber’s data rates and system capacity. This course offers a
technical overview of UMTS, focusing on the UMTS air interface (WCDMA), radio
networks and core networks. It covers the network architecture, components and
basic operations of UMTS networks. In addition, this course explores the details
of the W-CDMA air interface technology and its ability to support multiple
subscribers simultaneously.
Aspects of CDMA technology pertaining to W-CDMA Air Interface including coding,
modulation, spreading, scrambling, handovers and power control mechanism are
clearly explained. This course then focuses on circuit-switched and
packet-switched core networks. The key concepts in the course are tied together
with several system scenarios to provide insight into location management,
mobility management and handovers. The course also provides an overview of the
key benefits and challenges of HSDPA. The key terms and concepts are discussed
so that the enhancements of HSDPA to UMTS are understood.
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Cellular Networks refresher
- Cellular system basic elements
- HLR, VLR, AUC, EIR functions
- The cell functions and radio interface
- Short Message Service network elements
- The existing access technologies for 2G (TDMA/FDMA/CDMA)
- Overview of the 2G technologies and standards of the existing leading 2G systems
- UMTS system architecture overview
- Motivation behind UMTS and the expectations from 3G
- Key features, services and supported data rates
- Billing new aspects in 3G networks
- Technologies landscape and migration road map to 3G
- GSM/GPRS over EDGE to UMTS
- CDMA to 3G CDMA2000 (1xRTT & 1xEV-DO)
- UMTS Core Network architecture
- Network architecture
- Packet core key components (SGSN & GGSN, SIGTRAN)
- Migrating from GPRS to UMTS
- Circuit core key components (MSC, TRAU, VLR, HLR)
- UMTS (W-CDMA) Radio Access Network architecture
- Functions of UTRAN
- Key Components (RNC, Node B)
- The transport interface between UTRAN components and the Core
- UMTS (W-CDMA) Air Interface
- The W-CDMA Technology presentation
- The W-CDMA Technology presentation
- CDMA Technology in W-CDMA
- Encoding and modulation techniques
- Spreading and Scrambling
- OVSF codes in W-CDMA
- Protection of data
- W-CDMA power control process
- Open-loop power control for the uplink
- Closed-loop power control for the uplink
- Closed-loop power control for the downlink
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Macro diversity in W-CDMA Spread Spectrum concept overview
- The radio interface
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The W-CDMA Uplink
- Uplink channel structure, functionality and mapping
- Uplink spreading and scrambling codes
- Dedicated channels: DPDCH and DPCCH
- I-Q Code Multiplexing of Dedicated Channels
- Data rates
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- The W-CDMA Downlink
- Downlink channel structure, functionality and mapping
- Downlink spreading and scrambling codes
- Dedicated Channels: DPDCH and DPCCH
- Coding and Multiplexing
- Shared Channels: DSCH and HS-DSCH
- Interfaces and Protocols High-Level Overview
- Protocol structure in UMTS (W-CDMA)
- Control & User Plane Protocols
- Channel structure
- Logical, physical and transport channels
- Physical, MAC and RLC and RRC
- Handovers in UMTS
- The Rack Receiver HW and multi path
- Soft Handover
- Softer Handover
- UMTS-GSM Interworking
- Cell Reselection between UMTS and
- GSM/GPRS
- Handover between UMTS and GSM/GPRS
- Quality of Service in UMTS
- QoS classes, functions and attributes
- UTRAN QoS functions
- System Scenarios Overview
- System acquisition and Cell Search
- The common pilot channel (CPICH)
- Primary and Secondary Synchronization channels
- Primary and Secondary CCPCH
- UMTS attach procedure
- Location tracking when the mobile is connected to the network
- Overview of a circuit-switched call
- Registration & Location updates
- Call origination and termination
- Radio and core network mobility
- PDP context activation
- Establishing a packet data session
- Video call overview
- UMTS Future Evolution
- RLS 4 / Voice over Packet core
- RLS 5 / HSDPA technology introduction
- RLS 6 / All IP network, IMS architecture
- Conclusion
- Glossary
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- This course is intended to provide a technical overview of UMTS (W-CDMA). It is
appropriate for personnel in planning, deployment, RF engineering, network
performance, and network operations.
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- Delegates should have a basic understanding of IT and telephony and be familiar
with Cellular telecommunications, the basic cellular procedures and SS7
signaling
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