4 g mobilecommunications

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4 g mobilecommunications

  1. 2. <ul><li>Where are we? </li></ul><ul><li>Where do we Want to go? </li></ul><ul><li>3G vs 4G </li></ul><ul><li>4G Process </li></ul><ul><li>Challenges </li></ul>
  2. 3. <ul><li>Hyper Lan- set of wireless Lan </li></ul><ul><li>1G-First Generation </li></ul><ul><ul><li>Speech </li></ul></ul><ul><li>2G-Second Generation </li></ul><ul><ul><li>SMS , MMS </li></ul></ul><ul><ul><li>CDMA , GPRS , EDGE </li></ul></ul><ul><ul><li>Voice Mail </li></ul></ul><ul><li>3G-Third Generation </li></ul><ul><ul><li>Wireless Internet </li></ul></ul><ul><ul><li>Video Calling </li></ul></ul><ul><ul><li>Mobile TV </li></ul></ul>
  3. 4. <ul><li>High transfer rate </li></ul><ul><li>Internet access any where </li></ul><ul><ul><li>Ability to move around with the same IP address </li></ul></ul><ul><li>Utilization of Smart antennas </li></ul><ul><li>High resolution Mobile TV </li></ul>
  4. 5. <ul><li>GSM/TDMA </li></ul><ul><ul><li>Time Division Multiplexing based access </li></ul></ul><ul><li>CDMA </li></ul><ul><ul><li>Code Division Multiplexing based access </li></ul></ul><ul><li>OFDM </li></ul><ul><ul><li>Orthogonal Frequency Division Multiplexing </li></ul></ul>
  5. 6. 3G Vs 4G Technology 3G 4G Data Transfer Rate 3.1MB /sec 100MB/sec Internet services Broadband Ultra Broadband Mobile -TV Resolution Low High Bandwidth 5 - 20 MHz 100 +MHz Frequency 1.6- 2 GHZ 2 – 8 GHz Network Architecture Wide Area Network Hybrid Network
  6. 8. <ul><li>Machine-to-machine transmission </li></ul><ul><li>-Sensors (measure parameters) </li></ul><ul><li>-Tags (read/write equipment) </li></ul><ul><li>Consented to achieve 500bit/s/Hz/km2 </li></ul><ul><li>-HSDPA (High Speed Download Packet Access) </li></ul><ul><li>-MIMO </li></ul><ul><li>WWI agreed peak rates of 100Mbit/s in mobile </li></ul><ul><li>situations1Gbit/s in nomadic/pedestrian situations </li></ul>Service Evolution and Consensus
  7. 9. 4G Process <ul><li>To operate large number of users </li></ul><ul><li>- Parent coverage </li></ul><ul><li>- Pico-cell coverage </li></ul>
  8. 10. <ul><li>Mobile IP </li></ul><ul><ul><li>VoIP </li></ul></ul><ul><ul><li>Ability to move around with the same IP address </li></ul></ul><ul><ul><li>IP tunnels </li></ul></ul><ul><ul><li>Intelligent Internet </li></ul></ul><ul><li>Presence Awareness Technology </li></ul><ul><ul><li>Knowing who is on line and where </li></ul></ul><ul><li>Radio Router </li></ul><ul><ul><li>Bringing IP to the base station </li></ul></ul><ul><li>Smart Antennas </li></ul><ul><ul><li>Unique spatial metric for each transmission </li></ul></ul>
  9. 11. Key Technologies Required for 4G <ul><li>OFDMA </li></ul><ul><li>-Time domain </li></ul><ul><li>-Space domain </li></ul><ul><li>-Frequency domain </li></ul>
  10. 12. Key Technologies Required for 4G <ul><li>MIMO </li></ul><ul><li>Signal multiplexing between antennas </li></ul><ul><li>-Smart antennas </li></ul><ul><li>Well suited to OFDM </li></ul>
  11. 13. Key Technologies Required for 4G <ul><li>Coverage </li></ul><ul><li>Parent coverage ------ Pico-cell coverage </li></ul>
  12. 14. Challenges <ul><li>Sufficient spectrum with associated sharing mechanisms. </li></ul><ul><li>Coverage with two technologies. </li></ul><ul><li>Caching technology in the network and terminals. </li></ul><ul><li>OFDM and MIMO. </li></ul><ul><li>IP mobility. </li></ul><ul><li>Multi-technology distributed architecture. </li></ul><ul><li>Fixed-mobile convergence (for indoor service). </li></ul><ul><li>Network selection mechanisms. </li></ul>
  13. 15. <ul><li>Life-Saving: Telemedicine </li></ul><ul><li>Video Conferencing </li></ul><ul><li>Telegeoprocessing: GIS,GPS </li></ul><ul><li>Better Usage of Multimedia Applications </li></ul><ul><li>Voice over Internet Protocol (VoIP) for IPv6 </li></ul>
  14. 16. <ul><li>Mobile Intelligent Internet and multi media applications </li></ul><ul><li>Seamless Roaming, substantially high and selectable user bandwidth, customized QoS, Intelligent and responsive user interface </li></ul><ul><li>Mobile IP, Radio Routers, smart Antennas </li></ul><ul><li>Continued advances and challenges from 1G -> 4G </li></ul><ul><ul><li>Modulation techniques, transreceiver advances, fast manipulations, user interfaces, IP tunelling and firewalls </li></ul></ul><ul><ul><li>Spectrum usage, regulatory decisions, “one” standard, authentication and security, multi disciplinary co-operation </li></ul></ul><ul><li>Packing so much intelligence in smaller and smaller physical space, esp. User Equipment (UE) </li></ul><ul><li>IP + WPAN + WLAN + WMAN + WWAN + any other stragglers = 4G </li></ul>
  15. 17. <ul><li>Any Queries? </li></ul>
  16. 18. <ul><li>Thank U </li></ul>

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