22-06-2012, 04:32 PM
4G – The Next Generation Wireless Network
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Introduction
4G is an initialism of the term Fourth-Generation Communications System.
A 4G system will provide an end-to-end IP solution where voice, data and streamed multimedia can be served to users on an "Anytime, Anywhere" basis at higher data rates than previous generations.
No formal definition is set as to what 4G is, but the objectives that are predicted for 4G can be summarized as follows:
4G will be a fully IP-based integrated system of systems and network of networks wired and wireless networks (e.g.: computer, consumer electronics, communication technology…)
Providing 100 Mbit/s and 1 Gbit/s, respectively, in outdoor and indoor environments
End-to-end quality of service
High security
Offering any kind of services anytime, anywhere
Affordable cost and one billing
Challenges
4G definition
A global consensus on the 4G definition is needed before the standardization starts.
Despite efforts there still are too many diverging approached to 4G.
Seamless connectivity
Inter- and intra-network connectivity is fundamental to the provision of temporally and spatially seamless services.
Vertical and horizontal handovers are critical for 4G. In the former case, the heterogeneity and variety of networks exacerbate the problem.
Latency
Many 4G services are delay sensitive.
Guaranteeing short delays in networks with different access architecture and coverage is far from straightforward.
Development
A Japanese company has been testing a 4G communication system prototype at 100 Mbit/s while moving, and 1 Gbit/s while stationary. Recently reached 5 Gbit/s moving at 10 km/h, and is planning on releasing the first commercial network in 2010.
An Irish company has announced that they have received a mobile communications license from Irish Telecoms regulator. This service will be issued the mobile code 088 in Ireland and will be used for the provision of 4G Mobile communications.
Sprint plans to launch 4G services in trial markets by the end of 2007 with plans to deploy a network that reaches as many as 100 million people in 2008
[attachment=25123]
Introduction
4G is an initialism of the term Fourth-Generation Communications System.
A 4G system will provide an end-to-end IP solution where voice, data and streamed multimedia can be served to users on an "Anytime, Anywhere" basis at higher data rates than previous generations.
No formal definition is set as to what 4G is, but the objectives that are predicted for 4G can be summarized as follows:
4G will be a fully IP-based integrated system of systems and network of networks wired and wireless networks (e.g.: computer, consumer electronics, communication technology…)
Providing 100 Mbit/s and 1 Gbit/s, respectively, in outdoor and indoor environments
End-to-end quality of service
High security
Offering any kind of services anytime, anywhere
Affordable cost and one billing
Challenges
4G definition
A global consensus on the 4G definition is needed before the standardization starts.
Despite efforts there still are too many diverging approached to 4G.
Seamless connectivity
Inter- and intra-network connectivity is fundamental to the provision of temporally and spatially seamless services.
Vertical and horizontal handovers are critical for 4G. In the former case, the heterogeneity and variety of networks exacerbate the problem.
Latency
Many 4G services are delay sensitive.
Guaranteeing short delays in networks with different access architecture and coverage is far from straightforward.
Development
A Japanese company has been testing a 4G communication system prototype at 100 Mbit/s while moving, and 1 Gbit/s while stationary. Recently reached 5 Gbit/s moving at 10 km/h, and is planning on releasing the first commercial network in 2010.
An Irish company has announced that they have received a mobile communications license from Irish Telecoms regulator. This service will be issued the mobile code 088 in Ireland and will be used for the provision of 4G Mobile communications.
Sprint plans to launch 4G services in trial markets by the end of 2007 with plans to deploy a network that reaches as many as 100 million people in 2008