The International Telecommunications Union (ITU) launched the International Mobile Telecommunications-2000 (IMT-2000) program, which, together with the main industry and standardisation bodies worldwide, targets to provide the framework for the definition of the third-generation (3G) mobile systems. Several radio access technologies have been accepted by ITU as part of the IMT-2000 framework. IMT-2000 is a radio and network access specification defining several methods or technology platforms that meet the overall goals of the specification. The IMT-2000 specification is meant to be a unifying specification, enabling mobile and some fixed high speed data services to use one or several radio channels with fixed network platforms for delivering the services envisioned:
■ Global standard
■ Compatibility of service within IMT-2000 and other fixed networks
■ High quality
■ Worldwide common frequency band
■ Small terminals for worldwide use
■ Worldwide roaming capability
■ Multimedia application services and terminals
■ Improved spectrum efficiency
■ Flexibility for evolution to the next generation of wireless systems
■ High-speed packet data rates
■ Global standard
■ Compatibility of service within IMT-2000 and other fixed networks
■ High quality
■ Worldwide common frequency band
■ Small terminals for worldwide use
■ Worldwide roaming capability
■ Multimedia application services and terminals
■ Improved spectrum efficiency
■ Flexibility for evolution to the next generation of wireless systems
■ High-speed packet data rates
- 2 Mbps for fixed environment
- 384 Kbps for pedestrian
- 144 Kbps for vehicular traffic
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