ephony and fast, large file transfer UMTS is the European member of the IMT-2000 family of 3G cellular mobile standards. UMTS will enter the market at a time when fixed mobile integration is becoming a reality; the telecommunications, computer, and media industries have converged on IP as a shared standard; and data Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. Future Enhancements and Services Chapter 11 accounts for a significant proportion of the traffic carried by mobile net- works. UMTS requirements include Small, low-cost packet terminals Worldwide roaming A single system for residential, office, cellular, and satellite environments High-speed data Vehicular 144 Kbps Pedestrian 384 Kbps Indoor 2 Mbps The UMTS systems, as shown in Figure 11-11, will support data rates of up to 2 Mbps and new multimedia applications over a new, wideband air interface based on CDMA techniques. Services will be supported by a wide range of terminals tailored to the requirements of voice, data, and multi- media services. UMTS will encompass more than just cellular systems, evolving from GSM and embracing fixed networks and other wireless and wireline access technologies. Services will be globally available, delivered over the mobile, satellite, or fixed networks that provide the best accessibility for the con- sumer's specific location. The current vision of most operators is that UMTS will exist as "islands of coverage" with data services supported by GPRS in areas of lower traffic Figure 11-11 UMTS system configurations. Circuit Switched @ 64 Kbps Server Internet Node B Packet Switched @ 2 Mbps X.25 or PSPDN Downloaded from Digital Engineering Library @ McGraw-Hill (www.digitalengineeringlibrary.com) Copyright © 2004 The McGraw-Hill Companies. All rights reserved. Any use is subject to the Terms of Use as given at the website. Future Enhancements and Ser