IMT 2000 standards
The ITU became involved in global mobile standards more than 10 years ago when cellular mobile was in its infancy and hand-held cellular phones were just starting to appear. Most mobile phones at that time were vehicular but some ITUR delegates believed that eventually hand-held “personal communicators” would dominate future telecommunications. Initial work focussed on IMT-2000 spectrum requirements in preparation for the 1992 World Radio Conference at which 230 MHz was identified for IMT-2000 on a global basis.
IMT-2000 aims to encourage global service provision and convergence of the many essentially competing wired and wireless access technologies. The IMT-2000 global standard provides the inherent flexibility necessary for today's’ operators to seamlessly evolve their networks towards the needs of the information age.
This talk provides some general background on ITU standards activities associated with IMT-2000 and an update on current work, particularly that of Task Group 8/1 on the radio aspects of IMT-2000.
We have all witnessed the dramatic growth of mobile and Internet services over the last 10 years, well beyond even the most optimistic projections some years ago. This very strong mobile growth is predicted by the UMTS Forum to continue, with almost 3 billion mobile users now estimated by 2015. These predictions also show that future mobile growth will be predominantly in Asia and the developing world. Wireless is predicted to exceed wired access some time between 2005 and 2010.
IMT-2000 encompasses most of today’s radio scenarios including both satellite and terrestrial components. Fixed and mobile together with public and private systems are included, incorporating a much wider range of services and mobile terminals than any of today’s radio systems.
The primary ITU objectives for IMT-2000 are:
– Flexible/seamless global service provision,
– Improved operational efficiencies, particularly for data and multimedia services,
– Suitable technology for reducing the telecommunications "gap", i.e. offers cost effective access for the more than 4 billion people who do not presently have a phone.
The phenomenal growth of mobile systems and the Internet have clearly indicated customers needs: Interactive asymmetrical multimedia services, in addition to voice, anywhere - anytime.
A major requirement of future wireless multimedia services will be the need to offer a range of quality levels to match the differing needs of the various multimedia service components.
IMT-2000, a strategic priority of the ITU, offers great potential for improving future access to the global telecommunications infrastructure.
Many different member organizations are currently involved in the ITU's IMT-2000 standardization activities including: regulators, standards development organizations (SDOs), operators and manufacturers.
The ITU has taken a “top down” approach to the definition of IMT-2000, in close cooperation with the wide range of telecommunications industry representatives who form the ITU membership. The ITU has also taken steps to facilitate the availability of adequate spectrum on a global basis for IMT-2000. Developments since the 1992 World Radio Conference, e.g. higher bit rate services and very strong mobile growth, have resulted in the need for additional IMT-2000 spectrum. This will be dealt with at the radio conference in the year 2000. A recommendation to facilitate free circulation of mobile terminals is currently being developed. Over 20 other IMT-2000 recommendations have been produced to date. Licensing of IPR according to ITU patent policy will ensure open global standards
IMT-2000 standards development involves extensive global collaboration between many different organizations.