Post on 24-May-2015
transcript
ONON
IndexIndex
1.1. IntroductionIntroduction2.2. HistoryHistory3.3. 4G wireless technology4G wireless technology4.4. Overview Overview 5.5. Objective & approachObjective & approach6.6. 4G features4G features7.7. 4G standards4G standards8.8. 4G objectives4G objectives9.9. AdvantagesAdvantages10.10. DisadvantagesDisadvantages
INTRODUCTIONINTRODUCTIONINTRODUCTIONINTRODUCTION
4G is a 44G is a 4thth generation mobile communication system generation mobile communication system
They are projected to solve still remaining problems of 3G They are projected to solve still remaining problems of 3G systemsystem
It provides a wide variety of services such as high-data-It provides a wide variety of services such as high-data-rate wireless channelsrate wireless channels
4G will not only support the next generation of mobile 4G will not only support the next generation of mobile service, but also supports the fixed wireless networksservice, but also supports the fixed wireless networks
HistoryHistory The history and evolution of mobile service from 1G to 4G The history and evolution of mobile service from 1G to 4G
are discussed in this section are discussed in this section
1G began with the designs in 1970’s its based on analog 1G began with the designs in 1970’s its based on analog technologytechnology
2G system was designed in 1980’s it provides services circuit 2G system was designed in 1980’s it provides services circuit switched data communication services at a low speedswitched data communication services at a low speed
3G system was designed in 1990’s it would have higher 3G system was designed in 1990’s it would have higher quality voice channelsquality voice channels
4G is new generation intended to complement and replace the 4G is new generation intended to complement and replace the 3G systems. The future 4G infrastructures will consist of a set 3G systems. The future 4G infrastructures will consist of a set of various networks using IP as common protocolof various networks using IP as common protocol
4G wireless Technology4G wireless Technology4G wireless Technology4G wireless Technology
4G is based on the developing trends of mobile 4G is based on the developing trends of mobile communicationcommunication
Application adaptability and being highly dynamic Application adaptability and being highly dynamic are the main features of 4G servicesare the main features of 4G services
4G systems will be fully IP-based wireless internet4G systems will be fully IP-based wireless internet
These services and models need to be further examine These services and models need to be further examine for their interface with the design of 4G systemsfor their interface with the design of 4G systems
4G mobile Communications4G mobile Communications
OverviewOverview
A 4G system is excepted to provide a A 4G system is excepted to provide a comprehensive and secure all-IP based comprehensive and secure all-IP based solution solution
It facilities IP telephony, ultra-broadband It facilities IP telephony, ultra-broadband internet access, gaming services and streamed internet access, gaming services and streamed multimedia may be providedmultimedia may be provided
Objective & approachObjective & approach
A spectrally efficient system A spectrally efficient system High network capacityHigh network capacity A data rate of at least 100mb at high speeds and 1gb A data rate of at least 100mb at high speeds and 1gb
at stationary conditionsat stationary conditions High quality of services for next generation High quality of services for next generation
multimedia supportsmultimedia supports An all IP, packet switched networkAn all IP, packet switched network Interoperability with existing systems.Interoperability with existing systems.
Mobile Technology RoadmapMobile Technology Roadmap
4G Features4G Features
The infrastructure and the terminals of 4G will have The infrastructure and the terminals of 4G will have almost all the standards from 2G to 4G implementedalmost all the standards from 2G to 4G implemented
The first LTE USB dongles do not support any other The first LTE USB dongles do not support any other radio interfaceradio interface
The performance of the radio communication The performance of the radio communication depends on an antenna system depends on an antenna system
One such example is Spatial multiplexing which One such example is Spatial multiplexing which involves deploying antennas at transmitter and involves deploying antennas at transmitter and receiver.receiver.
4G standards4G standards
In September 2009,the technology proposals have In September 2009,the technology proposals have been submitted to ITU-R as 4G candidatesbeen submitted to ITU-R as 4G candidates
LTE advanced will be fully built on the existing LTE LTE advanced will be fully built on the existing LTE specification release 10 and not to be defined as new specification release 10 and not to be defined as new specification seriesspecification series
IEEE 802.16-2004 addresses only fixed systemIEEE 802.16-2004 addresses only fixed system IEEE 802.16e-2005 also called mobile WiMAXIEEE 802.16e-2005 also called mobile WiMAX
AdvantagesAdvantages
The 4G cell phone networks have been The 4G cell phone networks have been established to maximize the use of the internet established to maximize the use of the internet through cell phonesthrough cell phones
Instead of using the computer, people would Instead of using the computer, people would prefer a more portable and simpler toolprefer a more portable and simpler tool
Web browsers are designed for cell phones to Web browsers are designed for cell phones to maximize the functionmaximize the function
The 4G network has made it easier and faster The 4G network has made it easier and faster to acquire all the data and information neededto acquire all the data and information needed
DisadvantagesDisadvantages
4G or 4G enabled phones are more expensive4G or 4G enabled phones are more expensive
4G currently available only in United States. It will 4G currently available only in United States. It will take a years for 4G to available in other countriestake a years for 4G to available in other countries
Upgrading your 3G into 4G is not possible even if Upgrading your 3G into 4G is not possible even if you are ready to buy a phone and wanted to upgrade you are ready to buy a phone and wanted to upgrade to 4G the network is not availableto 4G the network is not available
Sample 4G mobileSample 4G mobile
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