Group 5: WiMax

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  • 07/13/10 07:57 © 2007 Microsoft Corporation. All rights reserved. Microsoft, Windows, Windows Vista and other product names are or may be registered trademarks and/or trademarks in the U.S. and/or other countries. The information herein is for informational purposes only and represents the current view of Microsoft Corporation as of the date of this presentation. Because Microsoft must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.
  • WiMax stands for Worldwide Interoperability for Microwave Access The name "WiMAX" was created by the WiMAX Forum, formed in June 2001 Promote conformity and interoperability of the standard. The forum describes WiMAX as "a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL" WiMAX is a standards initiative. Its purpose is to ensure that the broadband wireless radios manufactured for customer use interoperate from vendor to vendor. The primary advantages of the WiMAX standard are to enable the adoption of advanced radio features in a uniform fashion and reduce costs for all of the radios made by companies, who are part of the WiMAX Forum™ - a standards body formed to ensure interoperability via testing.
  • WiMAX is an IP based, wireless broadband access technology A telecommunications technology that provides wireless transmission of data using a variety of transmission modes, from point-to-multipoint links to portable and fully mobile internet access Provides performance similar to 802.11/Wi-Fi networks Coverage and QOS (quality of service) of cellular networks.
  • Theoretical maximum speed of 75 Mbps per channel Real world application max out at 45 Mbps per channel Due to shared access, users can expect 5 Mbps download speeds The current active 802.16 standards include: 802.16d (or 802.16-2004 - Fixed WiMAX) 802.16e (or 802.16-2005 Mobile WiMAX) However, the IEEE is also working on an extension of the 802.16e version called 802.16m, which will offer improved throughput and capability. 
  • The technology at theoretical maximums could support approximately 75 Mbps per channel (in a 20 MHz channel using 64QAM ¾ code rate). Real world performance lower, maxing out around 45 Mbps/channel in some fixed broadband applications. Several carriers are achieving 5 Mbps download speeds NLOS (non line of sight): low frequency signals from radio pass through impeding objects and not easily disrupted LOS (line of sight): higher frequency signals that are stronger/stable and provides more bandwidth with less errors
  • Signal may be debilitated by numerous factors such as terrain, density/height of tree cover, bodies of water, large buildings, and climate The bit error rate increases as the user travels away from the base station tower. The available bandwidth is shared between users as in WiFi, so performance could deteriorate in the case of many active users in a single sector
  • WiMax has a number of advantages over WiFi, including a greater range and improved security. WiMax can be implemented as a MAN(Metropolitan Area Network), whereas WiFi is used for LAN (Local Area Network). WiMax uses Full-Duplex technology, WiFi applies Half-Duplex.
  • WiMAX has the potential to replace a number of existing telecommunications infrastructures. In a fixed wireless configuration it can replace the telephone company's copper wire networks, the cable TV's coaxial cable infrastructure while offering Internet Service Provider (ISP) services. In its mobile variant, WiMAX has the potential to replace cellular networks.
  • UMTS is one of the third-generation (3G) mobile telecommunications technologies, which is also being developed into a 4G technology. CDMA2000 is a hybrid 2.5G / 3G technology of mobile telecommunications standards that use CDMA, a multiple access scheme for digital radio, to send voice, data, and signaling data (such as a dialed telephone number) between mobile phones and cell sites 3G is the third generation of telecommunication hardware standards and general technology for mobile networking, superseding 2.5G 4G (also known as Beyond 3G), an abbreviation for Fourth-Generation, is a term used to describe the next complete evolution in wireless communications. A 4G system will be a complete replacement for current networks and provide a comprehensive and secure IP solution where voice, data, and streamed multimedia can be given to users on an "Anytime, Anywhere" basis, and at much higher data rates than previous generations.
  • Group 5: WiMax

    1. 3. <ul><li>Industry-led, non-profit org. to certify and promote compatibility/interoperability of broadband wireless products based on standards of IEEE 802.16, ETSI HiperMAN and WiBro/Mobile WiMAX </li></ul><ul><li>Working to remove barriers to broadband wireless adoption </li></ul><ul><li>Address specific elements: </li></ul><ul><ul><li>Regulatory, certification, technical, marketing, service provider, networks and applications </li></ul></ul>
    2. 4. <ul><li>WiMax stands for Worldwide Interoperability for Microwave Access </li></ul><ul><li>The name &quot;WiMAX&quot; was created by the WiMAX Forum, formed in June 2001 </li></ul><ul><ul><li>Promote conformity and interoperability of the standard. </li></ul></ul><ul><ul><li>The forum describes WiMAX as &quot;a standards-based technology enabling the delivery of last mile wireless broadband access as an alternative to cable and DSL&quot; </li></ul></ul>
    3. 5. <ul><li>WiMAX is an IP based, wireless broadband access technology </li></ul><ul><li>A telecommunications technology that provides wireless transmission of data using a variety of transmission modes, from point-to-multipoint links to portable and fully mobile internet access </li></ul><ul><li>Provides performance similar to 802.11/Wi-Fi networks </li></ul><ul><li>Coverage and QOS (quality of service) of cellular networks. </li></ul>
    4. 7. <ul><li>Theoretical maximum speed of 75 Mbps per channel </li></ul><ul><li>Real world application max out at 45 Mbps per channel </li></ul><ul><li>Due to shared access, users can expect 5 Mbps download speeds </li></ul><ul><li>The current active 802.16 standards include: </li></ul><ul><ul><li>802.16d (or 802.16-2004 - Fixed WiMAX) </li></ul></ul><ul><ul><li>802.16e (or 802.16-2005 Mobile WiMAX) </li></ul></ul><ul><ul><li>However, the IEEE is also working on an extension of the 802.16e version called 802.16m, which will offer improved throughput and capability.  </li></ul></ul>
    5. 9. <ul><li>NLOS (non line of sight): low frequency signals from radio pass through impeding objects and not easily disrupted </li></ul><ul><li>LOS (line of sight): higher frequency signals that are stronger/stable and provides more bandwidth with less errors </li></ul>
    6. 10. <ul><li>WiMax Range 4-5 miles with NLOS capable frequencies </li></ul><ul><li>Ranges up to 10 miles are very likely in LOS applications </li></ul><ul><li>10+ miles possible, but not desirable for heavily loaded networks </li></ul><ul><li>3,000 square miles from a WiMAX tower </li></ul>
    7. 11. <ul><li>WiMax has newer security measures than current WiFi standards </li></ul><ul><li>WEP, which WiFi uses has not been ported over to WiMax due to tighter security needs </li></ul><ul><ul><li>WiFi itself has had security upgrades as well, with the WPA and WPA2 encryption </li></ul></ul><ul><li>WiMax will have higher security standards once initialized </li></ul>
    8. 12. <ul><li>WiMax is able to provide service to an entire city. </li></ul><ul><ul><li>Instead of paying for multiple WiFi spots, the city can simply pay for one WiMAX station. </li></ul></ul><ul><li>WiMax can provide an alternative to cable and DSL. </li></ul><ul><ul><li>Especially useful when cables are not available. </li></ul></ul><ul><li>WiMax will allow users portable access to the internet. </li></ul>
    9. 14. <ul><li>Signal degradation due to: </li></ul><ul><ul><li>Terrain, density/height of tree cover, bodies of water, large buildings, and climate. </li></ul></ul><ul><li>The bit error rate increases as the user travels away from the base station tower. </li></ul><ul><li>Bandwidth is shared by users </li></ul><ul><ul><li>Affect access speeds </li></ul></ul><ul><ul><ul><li>Increased users </li></ul></ul></ul><ul><ul><ul><li>Increased traffic </li></ul></ul></ul>
    10. 15. <ul><li>WiMax is better suited as a MAN. </li></ul><ul><ul><li>Less equipment needed to setup large coverage </li></ul></ul><ul><li>WiFi is best used as a LAN. </li></ul><ul><ul><li>Many repeater devices needed to extend range. </li></ul></ul><ul><li>Advantages over WiFi </li></ul><ul><ul><li>Greater range </li></ul></ul><ul><ul><li>Improved security </li></ul></ul><ul><li>WiMax is Full-Duplex </li></ul><ul><li>WiFi is Half-Duplex </li></ul>
    11. 16. <ul><li>WiMAX has the potential to replace a number of existing telecommunications infrastructures. </li></ul><ul><li>Fixed Wireless and mobile variants </li></ul><ul><li>WiMax has potential to replace cellular networks </li></ul>
    12. 17. <ul><li>Provide service to areas without traditional internet service: rural and remote areas </li></ul><ul><li>AT&T Alascom is offering WiMAX broadband technology in Alaska. Deployments have been launched in Anchorage & Juneau areas. </li></ul><ul><li>Rapid Systems uses WiMAX in the Tampa Bay metro area on the 3.5 GHz band. </li></ul><ul><li>Towerstream offers WiMAX-based internet service to businesses in 9 US cities, including Boston, Chicago, Dallas, Los Angeles, Miami, New York, Providence, San Francisco and Seattle </li></ul>
    13. 18. <ul><li>Clearwire – 4G Service </li></ul><ul><ul><li>Serving markets in the United States, Ireland, Belgium, Spain, Denmark (with Danske Telecom) and Mexico </li></ul></ul><ul><ul><li>A consortium of Comcast, Time Warner, Intel, Google, and Bright House </li></ul></ul><ul><li>Merged with Sprint’s Xohm broadband service to provide 4G service for Sprint </li></ul>
    14. 19. <ul><li>4G </li></ul><ul><ul><li>Higher data rates than previous generation 3G </li></ul></ul><ul><li>3G </li></ul><ul><li>HSPA </li></ul><ul><li>UMTS </li></ul><ul><ul><li>A 3G mobile technology which is also being developed into a 4G technology. </li></ul></ul><ul><li>CDMA2000 </li></ul><ul><ul><li>is a hybrid 2.5G / 3G technology that use CDMA </li></ul></ul>
    15. 22. <ul><li>www.clearwire.com </li></ul><ul><li>www.intel.com </li></ul><ul><li>www.cesweb.org </li></ul><ul><li>www.sprint.com </li></ul><ul><li>www.youtube.com </li></ul><ul><li>www.wimax.com </li></ul><ul><li>http://en.wikipedia.org/wiki/Wimax </li></ul><ul><li>www.wimaxforum.org </li></ul><ul><li>www.connig.com </li></ul><ul><li>www.learn-networking.com </li></ul>

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