27-02-2013, 12:42 PM
4G Mobile Wireless Systems
[attachment=52047]
Abstract
This report documents the work carried out by the author on systems beyond third generation mobile
wireless networks. This is why it has been suitably titled as 4G (fourth generation) mobile wireless
networks. The aim of this research line is to develop a system for robust coding of video content for 4G
applications. An investigation, comparison, and evaluation of methods how to send short video messages
(video postcards) using a 3G and 4G systems, using a mobile terminal such as a cell phone will be carried
out. The selection of image and video standards, error concealment, displays and batteries have also been
pursued. Research has also been carried out in markets and applications, network evolution and radio
access for 4G. Other topics that are relevant to 4G such as java based I-mode programs and FOMA
technology have also been included.
Initiatives have also been identified that will have an impact on the development of 4G and how it will
diverge along with its concerns. The selection of multiple access techniques suitable for 4G and 3G
standards that will integrate with 4G have also been addressed. Many enabling techniques including
software radio, smart antennas and digital signal processing aspects are improving the spectral efficiency
of 3G systems and have been marked as suitable technologies for 4G.
Introduction
The two most important trends in today’s telecommunications industry are the significant
developments of cellular networks and the rapid rise of the use of the Internet. The rise of mobility and
data-oriented applications are fundamentally changing the environment of the telecommunications
network. These new developments present important challenges for the industry and its present
infrastructure equipment providers. Voice will maintain to be an important application, but its leading
position will be weakened in future networks. These future networks will be optimised for data as well as
improving the quality of voice on mobile terminals. Future telecommunications infrastructures will be
heavily based on the Internet Protocol and would be packet switched. New services such as video
steaming and other multimedia services in the future telecommunications networks will be added
technologies.
An explosive growth is expected in mobile communications over the next decade with higher speeds and
larger capacities than provided by third-generation communications mobile systems, which must be made
possible in order to meet the requirements for faster speeds and more diverse usage formats. Accordingly,
studies are now being carried out to develop the fourth generation of mobile systems. Fourth generation
mobile communications involves a blend of concepts and technologies in the making. Some can be
recognised as being derived from 3G, while others involve new approaches to wireless mobile networks.
[21]
Fourth generation networks are expected to deliver more advanced versions of the same improvements
carry out by third generation networks. These improvements
include enhanced multimedia, smooth streaming video, universal access, and portability across all types
of devices. 4G enhancements are expected to include worldwide roaming capability. An important feature
includes the function of being able to send and receive video data. Both 3G and 4G networks are able to
transmit video data but with different levels of QoS.
Conclusion
The MPEG-4 codec is the most likely to become the prevailing format, as it facilitates compatibility
among products from different vendors and has been optimised for wireless communications. However,
licensing and patent fees issues may become a potential impediment to the success of MPEG-4, since
several companies have patents that apply to different aspects of MPEG-4. Combining these patents into
one single license fee will be quite challenging.
Hardware-based codec’s will be preferred in mobile phones as they consume a smaller amount of power
and are faster than software routines. Some hardware codec’s are currently available in the market, but
current products need to evolve in order to reduce cost and power requirements. However, significant
increase in computational capacity is needed for software-based encoders. Therefore, they will most
likely be used to record and play video (and audio) on PCs, using the computer’s CPU for processing.
One of the key issues for the operator consists of the definition of an “ideal” service roadmap. The mobile
operator must take advantage of the opening offered by mobile video services as a means to produce
increasing airtime traffic, revenue, and customer loyalty. It should be known that services with video
content will initially be low volume compared to other text and voice based services. The mobile operator
must then define a service roadmap including realistic video applications but prioritising those services
that are expected to generate more revenues in the short term. The operator should also take into account
that mobile subscribers need to be knowledgeable and become familiar with these new services. Finding
viable pricing models for mobile video services is yet another key challenge, as high charges might
hamper the general usage of mobile video applications.
[attachment=52047]
Abstract
This report documents the work carried out by the author on systems beyond third generation mobile
wireless networks. This is why it has been suitably titled as 4G (fourth generation) mobile wireless
networks. The aim of this research line is to develop a system for robust coding of video content for 4G
applications. An investigation, comparison, and evaluation of methods how to send short video messages
(video postcards) using a 3G and 4G systems, using a mobile terminal such as a cell phone will be carried
out. The selection of image and video standards, error concealment, displays and batteries have also been
pursued. Research has also been carried out in markets and applications, network evolution and radio
access for 4G. Other topics that are relevant to 4G such as java based I-mode programs and FOMA
technology have also been included.
Initiatives have also been identified that will have an impact on the development of 4G and how it will
diverge along with its concerns. The selection of multiple access techniques suitable for 4G and 3G
standards that will integrate with 4G have also been addressed. Many enabling techniques including
software radio, smart antennas and digital signal processing aspects are improving the spectral efficiency
of 3G systems and have been marked as suitable technologies for 4G.
Introduction
The two most important trends in today’s telecommunications industry are the significant
developments of cellular networks and the rapid rise of the use of the Internet. The rise of mobility and
data-oriented applications are fundamentally changing the environment of the telecommunications
network. These new developments present important challenges for the industry and its present
infrastructure equipment providers. Voice will maintain to be an important application, but its leading
position will be weakened in future networks. These future networks will be optimised for data as well as
improving the quality of voice on mobile terminals. Future telecommunications infrastructures will be
heavily based on the Internet Protocol and would be packet switched. New services such as video
steaming and other multimedia services in the future telecommunications networks will be added
technologies.
An explosive growth is expected in mobile communications over the next decade with higher speeds and
larger capacities than provided by third-generation communications mobile systems, which must be made
possible in order to meet the requirements for faster speeds and more diverse usage formats. Accordingly,
studies are now being carried out to develop the fourth generation of mobile systems. Fourth generation
mobile communications involves a blend of concepts and technologies in the making. Some can be
recognised as being derived from 3G, while others involve new approaches to wireless mobile networks.
[21]
Fourth generation networks are expected to deliver more advanced versions of the same improvements
carry out by third generation networks. These improvements
include enhanced multimedia, smooth streaming video, universal access, and portability across all types
of devices. 4G enhancements are expected to include worldwide roaming capability. An important feature
includes the function of being able to send and receive video data. Both 3G and 4G networks are able to
transmit video data but with different levels of QoS.
Conclusion
The MPEG-4 codec is the most likely to become the prevailing format, as it facilitates compatibility
among products from different vendors and has been optimised for wireless communications. However,
licensing and patent fees issues may become a potential impediment to the success of MPEG-4, since
several companies have patents that apply to different aspects of MPEG-4. Combining these patents into
one single license fee will be quite challenging.
Hardware-based codec’s will be preferred in mobile phones as they consume a smaller amount of power
and are faster than software routines. Some hardware codec’s are currently available in the market, but
current products need to evolve in order to reduce cost and power requirements. However, significant
increase in computational capacity is needed for software-based encoders. Therefore, they will most
likely be used to record and play video (and audio) on PCs, using the computer’s CPU for processing.
One of the key issues for the operator consists of the definition of an “ideal” service roadmap. The mobile
operator must take advantage of the opening offered by mobile video services as a means to produce
increasing airtime traffic, revenue, and customer loyalty. It should be known that services with video
content will initially be low volume compared to other text and voice based services. The mobile operator
must then define a service roadmap including realistic video applications but prioritising those services
that are expected to generate more revenues in the short term. The operator should also take into account
that mobile subscribers need to be knowledgeable and become familiar with these new services. Finding
viable pricing models for mobile video services is yet another key challenge, as high charges might
hamper the general usage of mobile video applications.