SERVICE COMPONENTS IN UMTS BACKGROUND UMTS services will not only offer mobile services supported by 2nd generation systems such as GSM, but will also expand these services to higher rates and greater flexibility. The services evolving in the GSM platform through its Circuit Switched (CS) and Packet Switched (PS) services will continue in UMTS while new services are introduced. | The UMTS Network and Radio Access Technology Air Interface Techniques for Future Mobile Systems Jonathan P. Castro Copyright 2001 John Wiley Sons Ltd Print ISBN 0-471-81375-3 Online ISBN 0-470-84172-9 Service Components in UMTS Background UMTS services will not only offer mobile services supported by 2nd generation systems such as GSM but will also expand these services to higher rates and greater flexibility. The services evolving in the GSM platform through its Circuit Switched CS and Packet Switched PS services will continue in UMTS while new services are introduced. Thus future UMTS services will have user transmission rates from low bit up to 2 Mbps. Although high rates will occur primarily within indoor environments there will be substantial increases in rates throughout all environments when compared to the typical kbps. Table an extract from Table illustrate this increase. Table Range of Transmission Rates High level description Maximal bit rate kbits s Maximal speed km h Cell coverage Rural outdoor 144s 500 Macrocell Suburban outdoor 384 120 Microcell Macrocell Indoor Low range outdoor 2048 10 Picocell Microcell Then the question of the transmission range for UTMS services is no longer just what transmission rates but what type of services when and where. It is no longer communications any where any time but what I want when I want where ever I want . Practically the exploitation of wider transmission rates will facilitate the expansion of data traffic. As illustrated Table there exists a clear trend for the convergence of IP protocol to wireless or to what we now call wireless IP. The latter will lead to the Wireless Internet where about 200 M Internet and 300 M mobile subscribers will merge into 1 billion Wireless Internet users. Table Convergence of Internet Protocol IP to Wireless Computer mobility high speed services Telecommunications mobility wide services Media mobility personal services Internet access ISDN services .
