4G LTE
EMERGING TRENDS
IP CONVERGENCE & IMS
TECHNOLOGY FOR BUSINESS
UMTS/HSPA+
WIRELESS LANDSCAPE
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NEW: Instant online access with every eLearning purchase UMTS is an evolution of GSM and GPRS. The air interface has been changed from a Time Division Multiple Access (TDMA) based system to a Wideband Code Division Multiple Access (WCDMA) based air interface. This change was required to achieve the data rate of 2 Mbps to the mobile, which is a 3G requirement. This course provides the details of the UMTS WCDMA air interface, known as UMTS Terrestrial Radio Access (UTRA). The WCDMA physical layer is key to achieving higher data rates and supporting new features. This course provides an overview of the physical layer. In addition, power control and soft handover, important features of any CDMA air interface, are discussed. The UMTS defined radio interface includes a number of channels, which are presented with an explanation of their usage. This course concludes with a discussion of how high data rates and multiple simultaneous services are delivered using UMTS.
Learning Objectives
After completing this course, the student will be able to: • Explain spreading factor codes in UMTS WCDMA • Describe the use of scrambling codes for source identification in both the uplink and downlink in WCDMA • Describe power control operations in the UMTS WCDMA system • Explain the basics of soft handoff processing from the perspective of the physical layer • Identify the features designed into the WCDMA system which enable high data rates • Describe the types of channels found in the UMTS radio interface and their purpose • Explain how concurrent services are supported by UMTS radio interface
Intended Audience
This course is intended for those seeking a detailed understanding of the WCDMA air interface that is used in UMTS. This includes those in a design, test, systems engineering, sales engineering network engineering, or verification role.
Suggested Prerequisites
• Overview of UMTS (eLearning)
Suggested Follow-up Training/Complementary Courses
• 3G Comparative Overview (Instructor Led) • UMTS Signaling (eLearning) • UMTS Mobility (eLearning)
Course Length
3 hours of eLearning
Course Outlines / Knowledge Knuggets
1. UMTS WCDMA Overview 1.1. Introduction to Wideband CDMA 2. UMTS WCDMA Channels 2.1. Overview of UMTS channel structure 3. WCDMA Physical Layer Processing 3.1. Protection of data 3.2. Separation channels 3.3. Scrambling codes 4. WCDMA Power Control 4.1. Introduction to power control 4.2. Requirements of power control 4.3. WCDMA power control process 5. Soft Handover in WCDMA 5.1. Introduction to soft handover 5.2. The RAKE receiver 5.3. Inter radio access technology handover procedure 6. Delivering High Data Rates in UMTS 6.1. Variable length spreading factors 6.2. Impact of protection on data rates 6.3. How to achieve 2 Mbps 6.3.1. QPSK modulation 6.3.2. Multiple codes 7. Concurrent Services, an Air Interface Perspective 7.1. Support of multiple simultaneous services by the mobile 7.2. Support concurrent services 7.3. Communication of information between the UE and the network 8. Summary Put It All Together Assess the knowledge of the participant based on the objectives of the course
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