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IEEE 802.16 & 802.15

IEEE 802.16 & 802.15. Priyanka Vanjani CST 554: Short Presentation ASU Id # 993923182. Agenda. IEEE and IEEE Standards 802.16 Benefits of 802.16 Problems associated with 802.16 802.16 vs 802.11 802.15 Problems associated with 802.15 Conclusion. IEEE.

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IEEE 802.16 & 802.15

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  1. IEEE 802.16 & 802.15 Priyanka Vanjani CST 554: Short Presentation ASU Id # 993923182

  2. Agenda • IEEE and IEEE Standards • 802.16 • Benefits of 802.16 • Problems associated with 802.16 • 802.16 vs 802.11 • 802.15 • Problems associated with 802.15 • Conclusion

  3. IEEE • Institute of Electrical and Electronics Engineers • International, Non-profit organization • Leading standards-making organizations in industries like IT, healthcare, telecommunications, IS etc.

  4. IEEE Standards

  5. IEEE Standards (contd..)

  6. 802.16 • Aims at deploying broadband Wireless Metropolitan Area Networks • Approved in Dec 2001 • Entry of broadband wireless access to link homes and businesses worldwide • 802.16 Wireless MAN provides network access to buildings by using exterior antennas

  7. 802.16 (contd..) • Network access through cables is no longer required • 802.16: delivers broadband wireless transmission in the frequency range: 10-66 GHz • 802.16a: 2-11 GHz • Lower frequency range helps reach more people and cost less

  8. 802.16 (contd..) • 802.16: Line of sight only, 10-66GHz, Point-to-Multipoint applications • 802.16a: Non Line of sight, 2-11GHz, Point-to-Multipoint applications. Base stations directly connect to the customer • 802.16c: Line of sight communication, 10-66GHz. Can be used in backhaul networks to connect 802.16a BS with high-speed links over long distances

  9. 802.16 (contd..)

  10. How it works?

  11. How it works? (contd..) • 802.16 provides communication path between the subscriber site and the core network • It has a three-layered architecture

  12. How it works? (contd..) • Physical Layer: lowest layer, deals with error correction, synchronization, modulation and frequency. DAMA-TDMA technique is used for transmission from subscribers  base station • MAC Layer: layer above Physical layer, associated with in what manner and when a station will initiate transmission

  13. How it works? (contd..) • Convergence Layer: for providing functions specific to the service such as ATM, internet

  14. Benefits • Services can be deployed faster even where wires cannot be reached • Reliable & Scalable • Single station is capable of serving hundreds of users • Wireless systems can span large geographical areas and are not expensive as cable links are not required

  15. Benefits (contd..) • Efficient even when there are multiple connections per terminal • Provides QoS (Quality of Service) mechanisms

  16. 802.16 : Amendments • 802.16e-2005: Mobile 802.16 • 802.16f-2005: Management Information Base • 802.16g-2007: Management Plane Procedures and Services • 802.16k-2007: Bridging of 802.16

  17. Problems • Difficult to determine each and every physical location for accurate placement of the equipment • As a result, Deployment costs might increase • Operational costs are high too • Needs strong electrical support-higher costs and power consumption

  18. Problems (contd..) • Weather conditions such as rain can interfere with reception • Limitation of bandwidth: In high density areas, bandwidth may not be sufficient to meet the needs of all the users-high costs • Costs associated with setting up wireless network since the frequency used is licensed by the government

  19. 802.15 & 802.16

  20. 802.16 & 802.11

  21. 802.16 & 802.11

  22. Problems with 802.15 • IEEE 802.15.4 does not take into account changes in the predetermined frequency channel. In case of interferences, switching to another channel is not possible • Not well-suited to applications with larger distance between nodes • Can accommodate 7 or more nodes and has a short range of 10 meters

  23. Problems with 802.15 • Cannot operate well in high interference environments

  24. Conclusion • Both 802.16 and 802.15 have their own advantages and disadvantages. While 802.16 has high installation costs, 802.15 is not expensive and doesn’t need licensing. 802.15 is used for devices like bluetooth, home security and 802.16 is Wireless MAN’s. To conclude, they both have different transmission range, rate and work in different situations

  25. References • http://en.wikipedia.org/wiki/IEEE • http://wirelessman.org/docs/02/C80216-02_05.pdf • http://en.wikipedia.org/wiki/IEEE_802.16 • http://en.wikipedia.org/wiki/WiMAX • http://mocca.objectweb.org/attach?page=WP3Events%2FIEEE802.16.pdf • http://www.wireless.ucla.edu/techreports/UCLA-WINMEC-2003-401-802.16-NW.pdf

  26. References (contd..) • http://rswcyyw.blogspot.com/2007/06/wimax-disadvantages.html • http://www.networkworld.com/news/tech/2001/0903tech.html • http://www.sentecelektronik.de/downloads/wirelessnetworksolutions.pdf • http://www.rfm.com/products/page2.htm • http://www.networkworld.com/news/tech/2001/0903tech.html

  27. References (contd..) • http://images.google.com/imgres?imgurl=http://www.cs.wustl.edu/~jain • http://www.fumec.org.mx/ingles/resources/collab%20acad%20nov%202005/5.Akingbehin.pdf • http://www.cs.wustl.edu/~jain/cse574-06/ftp/j_6man/sld022.htm • http://en.wikipedia.org/wiki/IEEE_802.11

  28. Thank You !

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