WCDMA for UMTS: Radio Access for Third Generation Mobile Communications, 2nd Edition - Hardcover

Harri Holma; Antti Toskala

Hardcover

ISBN 10: 0470844671 ISBN 13: 9780470844670

Publisher: John Wiley and Sons Ltd, 2002

Synopsis

Written by leading experts in the field, the first edition of WCDMA for UMTS quickly became established as the best–selling and most highly respected book on the air interface of 3G cellular systems. Fully revised and updated the second edition now covers the key features of 3GPP Release ′5 ensuring its position as the leading principal resource in this constantly progressing area.

Designed for multimedia communications, WCDMA will create numerous new business opportunities for manufacturers, operators, and content and applications providers. The second edition provides a deep understanding of the WCDMA air interface, its capabilities and its optimal usage – the key to success in the UMTS business, making this practical approach highly accessible to operators, network and terminal manufacturers, service providers, university students and frequency regulators.

• Explains the key parts of the 3GPP/WCDMA standard and the current status of UMTS licensing
• Presents network dimensioning and coverage and capacity for WCDMA including capacity upgrade paths and capacity per km2
• Introduces radio resource management algorithms and features inter–frequency hand–overs and inter–system hand–overs to GSM
• Examines the coverage and capacity of WCDMA up to 2Mbps using numerous simulation results and presents antenna diversity gain measurements in the WCDMA experimental system
• Introduces TDD and discusses its differences from FDD
• Discusses reference terminal classes

Key features of the 2nd edition include:

• New chapter on High Speed Downlink Packet Access, HSDPA
• New sections on IP Multimedia Subsystem (IMS)

Expanded coverage of:

• TCP protocol over WCDMA packet channels
• Base station and mobile performance requirements
• WCDMA for the Americas – WCDMA1900

About this title

Product Description:

Wcdma For Umts, 2Nd Edition by Holma H, 9780470844670, John Wiley

Excerpt. © Reprinted by permission. All rights reserved.:

CHAPTER 1: INTRODUCTION

Harri Holina, Antti Toskala and Ukko Lappalainen

1.1 WCDMA in Third Generation Systems

Analog cellular systems are commonly referred to as first generation systems. The digital systems currently in use, such as GSM, PDC, cdmaone (IS-95) and US-TDMA (IS-136), are second generation systems. These systems have enabled voice communications to go wireless in many of the leading markets, and customers are increasingly finding value also in other services such as text massaging and access to data networks, which are starting to grow rapidly.

Third generation systems are designed for multimedia communication: with them person-to-person communication can be enhanced with high quality images and video, and access to information and services on public and private networks will be enhanced by the higher data rates and new flexible communication capabilities of third generation systems. This, together with the continuing evolution of the second generation systems, will create new business opportunities not only for manufacturers and operators, but also for the providers of content and applications using these networks.

In the standardisation forums, WCDMA technology has emerged as the most widely adopted third generation air interface. Its specification has been created in 3GPP (the 3rd Generation Partnership Project), which is the joint standardisation project of the standardisation bodies from Europe, Japan, Korea, the USA and China. Within 3GPP, WCDMA is called UTRA (Universal Terrestrial Radio Access) FDD (Frequency Division Duplex) and TDD (Time Division Duplex), the name WCDMA being used to cover both FDD and TDD operation.

Throughout this book, the chapters related to specifications use the 3GPP terms UTRA FDD and TDD, the others using the term WCDMA. This book focuses on the WCDMA FDD technology. The WCDMA TDD mode and its differences from the WCDMA FDD mode are presented in Chapter 12.

1.2 Air Interfaces and Spectrum Allocations for Third Generation Systems

Work to develop third generation mobile systems started when the World Administrative Radio Conference (WARC) of the ITU (International Telecommunications Union), at its 1992 meeting, identified the frequencies around 2 GHz that were available for use by future third generation mobile systems, both terrestrial and satellite. Within the ITU these third generation systems are called International Mobile Telephony 2000 (IMT- 2000). Within the IMT-2000 framework, several different air interfaces are defined for third generation systems, based on either CDMA or TDMA technology, as described in Chapter 3. The original target of the third generation process was a single common global IMT-2000 air interface. Third generation systems are closer to this target than were second generation systems: the same air interface-WCDMA-is to be used in Europe and Asia, including Japan and Korea, using the frequency bands that WARC-92 allocated for the third generation IMT-2000 system at around 2!
GHz. In North America, however, that spectrum has already been auctioned for operators using second generation systems, and no new spectrum is available for IMT-2000. Thus, third generation services there must be implemented within the existing bands and also WCDMA can be deployed in the existing band in North America. The global IMT-2000 spectrum is not available in countries that follow the US PCS spectrum allocation. Some of the Latin American countries, like Brazil, plan to follow the European spectrum allocation at 2 GHz.

In addition to WCDMA, the other air interfaces that can be used to provide third generation services are EDGE and cdma2000. EDGE (Enhanced Data Rates for GSM Evolution) can provide third generation services with bit rates up to 500 kbps within a GSM carrier spacing of 200 kHz [1]. EDGE includes advanced features that are not part of GSM to improve spectrum efficiency and to support the new services. cdma2000 can be used as an upgrade solution for the existing IS-95 operators and will be presented in more detail in Chapter 13.

The expected frequency bands and geographical areas where these different air interfaces are likely to be applied are shown in Figure 1.1. Within each region there are local exceptions in places where multiple technologies are already being deployed.

The spectrum allocation in Europe, Japan, Korea and the USA is shown in Figure 1.2 and in Table 1.1. In Europe and in most of Asia the IMT-2000 (or WARC-92) bands of 2 x 60 MHz (1920-1980 MHz plus 2110-2170 MHz) will be available for WCDMA FDD. The availability of the TDD spectrum varies: in Europe it is expected that 25 MHz will be available for licensed TDD use in the 1900-1920 MHz and 2020-2025 MHz bands. The rest of the unpaired spectrum is expected to be used for unlicensed TDD applications (SPA: Self Provided Applications) in the 2010-2020 MHz band. FDD systems use different frequency bands for uplink and for downlink, separated by the duplex distance, while TDD systems utilise the same frequency for both uplink and downlink.

Also in Japan and Korea, as in the rest of Asia, the WARC-92 bands will be made available for IMT-2000. Japan has deployed PDC as a second generation system, while in Korea 15-95 is used for both cellular and PCS operation. The PCS spectrum allocation in Korea is different from the US PCS spectrum allocation, leaving the IMT-2000 spectrum fully available in Korea. In Japan, part of the IMT-2000 TDD spectrum is used by PHS, the cordless telephone system.

In China, there are reservations for PCS or WLL (Wireless Local Loop) use on one part of the IMT-2000 spectrum, though these have not been assigned to any operators. Depending on the regulation decisions, up to 2 x 60 MHz of the IMT-2000 spectrum will be available for WCDMA FDD use in China. The TDD spectrum will also be made available in China.

In the USA no new spectrum has yet been made available for third generation systems. Third generation services can be implemented within the existing PCS spectrum. For the US PCS band, all third generation alternatives can be considered: EDGE, WCDMA and cdma2k.

About this edition

• Publisher: John Wiley and Sons Ltd
• Publication date: 2002
• ISBN 10: 0470844671
• ISBN 13: 9780470844670
• Binding: Hardcover
• Number of pages: 384