3G
UMTS, or 3G services will require a completely new communications technology to be deployed by GSM operators. To allow for this new technology, also labelled W-CDMA, the 2GHz frequency band has been allocated, which will provide sufficient spectrum for the services to be fully exploited.
For example, one 5MHz UMTS carrier will be able to handle mixed services, ranging in speed from 8kbps to 384kbps or faster, while UMTS terminals will be able to access several different services simultaneously. Orange won its UMTS licence in April 2000.
Prior to the arrival of 3G, it is expected that a growing number of GSM operators in Western Europe will deploy high speed data services based upon HSCSD and/or GPRS over the next three years. The remainder, who probably have low penetration rates, are unlikely to invest in either technology and will await the arrival of 3G in around 2003.
For the majority of operators, 3G must be considered as a strategic option, assuming they have been granted a licence by their national regulator, to offer comprehensive multimedia services to mobile customers.When 3G becomes available, operators and users will experience a radically enhanced experience:
Support for both packet and circuit switched services at enhanced data rates
Variable and high-speed data rates up to 384kbps and faster
Multiple simultaneous services in each mobile terminal
Up to eight times more traffic per carrier compared to existing systems
Enhanced international roaming
3G technology will also introduce other improvements to the functionality of the overall system, primarily aimed at increasing capacity. These include:
Support for adaptive antenna arrays, which will optimise the antenna pattern for each individual mobile device
Support for multi-user detection, which will eliminate interference within a cell and improve quality
If 3G is initially only deployed in high usage 'hot spots', then it will need to co-exist with other mobile technologies to provide users with a good experience. 3G has been designed to support environments that employ a new handover method to allow 3G to inter operate within existing 2G networks.
This particular feature will provide users with an identical or similar user experience when they are roaming compared to when they are in their home network. There are handover mechanisms inherently available within the 3G specification which support handover between 2G and 3G networks.
Source: http://www.net4now.com/support/about_mobile.asp
For example, one 5MHz UMTS carrier will be able to handle mixed services, ranging in speed from 8kbps to 384kbps or faster, while UMTS terminals will be able to access several different services simultaneously. Orange won its UMTS licence in April 2000.
Prior to the arrival of 3G, it is expected that a growing number of GSM operators in Western Europe will deploy high speed data services based upon HSCSD and/or GPRS over the next three years. The remainder, who probably have low penetration rates, are unlikely to invest in either technology and will await the arrival of 3G in around 2003.
For the majority of operators, 3G must be considered as a strategic option, assuming they have been granted a licence by their national regulator, to offer comprehensive multimedia services to mobile customers.When 3G becomes available, operators and users will experience a radically enhanced experience:
Support for both packet and circuit switched services at enhanced data rates
Variable and high-speed data rates up to 384kbps and faster
Multiple simultaneous services in each mobile terminal
Up to eight times more traffic per carrier compared to existing systems
Enhanced international roaming
3G technology will also introduce other improvements to the functionality of the overall system, primarily aimed at increasing capacity. These include:
Support for adaptive antenna arrays, which will optimise the antenna pattern for each individual mobile device
Support for multi-user detection, which will eliminate interference within a cell and improve quality
If 3G is initially only deployed in high usage 'hot spots', then it will need to co-exist with other mobile technologies to provide users with a good experience. 3G has been designed to support environments that employ a new handover method to allow 3G to inter operate within existing 2G networks.
This particular feature will provide users with an identical or similar user experience when they are roaming compared to when they are in their home network. There are handover mechanisms inherently available within the 3G specification which support handover between 2G and 3G networks.
Source: http://www.net4now.com/support/about_mobile.asp
posted by Suraj Naik at 6:32 PM
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