1 / 11

WiMAX - a sneak preview

Explore the WiMAX technology, its market impact, architecture, and comparison with 3G, highlighting cost, performance, and acceptance. Learn about WiMAX standards, infrastructure, and market projections. Discuss the WiMAX vs. 3G dilemma, the benefits, and challenges it presents in the wireless industry.

kschirmer
Download Presentation

WiMAX - a sneak preview

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. WiMAX - a sneak preview Torbjörn Lundmark

  2. Agenda • WiMAX overview • Market • Technology • Standard update • WiMAX architecture • Network architecture • OFDM • MAC/PHY • Summary

  3. Today's Wireless Market • End-user are used to high bandwidth from fixed sources • Expects the same behaviour from wireless • The initial launch of WCDMA has not been a success • ~30 million subscriber where half in NTT DoCoMo NW • 2/3 of the subscriber added as late as 2005 • Initial 3G promises far from fulfilled (wireless video, coverage, etc) • A “need for speed” required from existing telco operators • Afraid of being left behind • Competing with wireless MAN provider • Needs to be prepared for future growth of data traffic • Protect their 3G investment • A need for lower rural coverage cost

  4. 3G Evolution (source: Nokia)

  5. What is WiMAX, 802.16d and e • A specification of 915 pages accepted in 2004. A member of the IEEE802 family of specifications. • IEEE802.16-2004 include P2P, P2MP and mesh access networks • 2-11GHz NLOS 10-66 GHz LOS • During 2005 IEEE 802.16e includes mobility. • During 2005 MIB standardized as well • IEEE802.16 is supported by the industry group WiMAX • IEEE802.11 is supported by the industry group WiFi

  6. WiMAX vs. 3G, pros and cons • Cost • Lower equipment cost for WiMAX due to certified products (compare with WiFi) • WiMAX require new infrastructure while HSPA rides on UMTS • Coverage • Roughly the same coverage (average ~5 km) • Performance • Roughly the same performance (average ~2 Mb/s per user) • Market window • HSDPA launches in 2006 while HSUPA will come in 2008? • WiMAX standard set end of 2005 -> first products in 2007 • Acceptance • HSPA has a higher acceptance with mobile operator

  7. WiMAX architecture End-to-End Reference Model

  8. ASN Reference Model

  9. WiMAX BS architecture • OFDM • Modulation technique, spread spectrum • Used in e.g DSL, WLAN, WiMAX • MAC, control plane, user plane • Manage resources on the air interface • QoS • ARQ • Mobility Management • Radio Resource Management • Location • PHY • OFDM • MIMO • Modulation MAC Data Plane P H Y MAC Control Plane Service Specific CS e.g. IP

  10. Summary • Standard for WiMAX mobile solution not finalized yet • No products certified by WiMAX forum yet • Test network in Skellefteå shows promising results • According to analysts WiMAX will take significant market shares • Which standard will rule next–generation broadband wireless?

More Related