4 g technology
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4 g technology

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4 g technology 4 g technology Presentation Transcript

  • PresentedByLahiru diyamantha
  • 4G is not one defined technology or standard,butrather a collection of technogies at creating fullypacket switched networks optimized for data.4G Networks are projected to provide speed of100Mbps while moving and 1Gbps whilestationary
  •  1G refers to the first-generation of wirelesstelephone technology was developed in 1970’s 1G had two major improvements: the invention of the microprocessor the digital transform of the control link between thephone and the cell site. Analog signal
  •  Around 1980’s Better quality & capacity - More people coulduse there phones at the same time Digital Signals – consist of 0’s & 1’s
  •  Allows for lower powered radio signals thatrequire less battery Power–CODEC introduction -program thatencodes and decodes digital data stream orsignal Translates data from digital to analog and viceversa
  •  The digital voice encoding allows digital errorchecking increase sound quality lowers the noise level Going all-digital allowed for the introductionof digital data transfer SMS –“short message service” E-mail
  •  Cell towers had a limited coverage area Jagged Decay curve Discontinuous dropped calls Analog –gradual sound reduction “Spotty” coverage
  •  Large capacity and broadband capabilities Allows the transmission of 384kbps for mobilesystems and up to 2Mbps High data rates at lower incremental cost than2G–Global roaming
  •  HSPDA-High speed down link packet access3.6 Mbps-14.2 MbpsHSPA + evalved high speed packet access1Mbps- 7Mbps
  •  High input fees for the 3G service licenses Great differences in the licensing terms 3G phones are expensive
  •  Fourth Generation Technology Faster and more reliable 100 Mb/s Lower cost than previous generations Multi-standard wireless system Bluetooth, Wired, Wireless Ad Hoc Networking OFDM used instead of CDMA Most information is proprietary
  •  self organization ofnetworks of devices Not necessarilyconnected to internet 4G will create hybridwireless networks usingAd Hoc networks
  •  4G will provide a wireless alternative forbroadband access It will provide first opportunity for broadbandaccess in remote locations without aninfrastructure to support cable or DSL access.
  •  Experience enhance wireless capabilities thatdeliver mobile gaming interaction with lessthan five seconds Play online multi player games while travelingat high speeds or sitting outside
  •  4G LTE- long term evolution 100Mbps(down) 50Mbps(up) 4G WiMax-world wide interoperability formicro wave access 128Mbps(down) 56Mbps(up)