WiMax Worldwide Interoperability for Microwave Access

Transcription

1 WiMax Worldwide Interoperability for Microwave Access What is WiMax? Why was Wimax defined What needs does it cover? Wimax Technology Different use cases Technologies used in Wimax Range examples Personal experience

2 What is WiMax? Its wireless broadband WiMax is a standard for wireless broadband Describes as «WiFi on steroids», having greater range and bandwidth than WiFi A WiMax base station typically covers a radius of 2 km for indoor terminals and 10 km for outdoor terminals

3 What is WiMax? Its a WMAN WiMax was designed to be a Wireless Metropolitan Area Network Wireless alternative to cables Deployment in disasters Aech, Indonesia - Tsunami in 2004 Hurricane Katrina in 2005

4 What is WiMax? It consists of many different standards WiMax is a commercialization of the IEEE Standard, which specifies the radio-frequency technology for wireless metropolitan networks. Many different WiMax standards exists Fixed WiMax Mobile WiMax WiMax II

5 What is WiMax? Fixed WiMax Fixed Broadband Wireless Access (1066 GHz) Only Line-of-sight capability a 2003 Physical layer and MAC definitions for 211 GHz WiMax as we know it Designed to provide Mbits/s

6 What is WiMax? Mobile WiMax e Adding Support for Mobility (Soft and hard handover between basestations) Scalable Orthogonal Frequency Division Multiple Access MIMO technology Denser sub-channelization Improving indoor penetration

7 What is WiMax? WiMax II m Data rates of 100Mbit/s mobile and 1 Gbit/s fixed Mimo, Turbo principle error-correcting codes, Channel-dependent scheduling

8 What is WiMax? Last Mile alternative WiMax can be described as a point-to-multipoint microwave networks, providing a wireless alternative to cable and DSL for «last mile» broadband access

9 What is WiMax? Use Case - Norway Offered to rural communities in some areas of Norway

10 What is WiMax? Use Case - Norway

11 What is WiMax? Use Case - Norway B r e d b å n d p å F jo r d 1 A d m in is t r a t iv e t je n e s t e r V P N - tje n e s te r fo r F jo r d 1 In tr a n e t D r if t s t e k n is k e b e h o v O v e r v å k n in g a v te k n is k e in s ta lla s jo n e r E - p o s t, s e r v e r - t ilg a n g, e tc. B ille t t e r in g o g h a n d e l ( b e t a lin g s te r m in a le r ) N y h e t e r o g r e k la m e G a s s k ra ftv e rk B r e d b å n d t il f o lk e t T r å d lø s t b r e d b å n d fo r p a s s a s je r e r H om er un

12 WiMax Technology Fixed and Mobile T h e d e v e lo p m e n t o f W im A X P hase 1: A n a lte r n a tiv e to o th e r fix e d b r o a d b a n d te c h n o lo g ie s 3.5 G H z b a n d P hase 2: A n a lte r n a tiv e to o th e r m o b ile b r o a d b a n d te c h n o lo g ie s 2.3 G H z b a n d

13 WiMax Technology Fixed and Mobile F r e q u e n c y b a n d s fo r W im A X F ix e d a n d n o m a d ic W im A X 3.5 G H z fre q u e n c y b a n d P r iv a te n e tw o r k s F e e d in g lo c a l a c c e s s p o in ts In d o o r a n d o u td o o r te r m in a ls M o b ile W im A X 2.3 G H z fre q u e n c y b a n d F u ll m o b ility H a n d h e ld te r m in a ls

14 WiMax Technology Adaptive Modulation Adaptive Modulation - Channel quality

15 WiMax Technology OFDM OFDM Orthogonal Frequency Division Multiplexing

16 WiMax Technology Multiple-In and Multiple-Out

17 WiMax Technology Line of Sight

18 WiMax Technology Non Line of Sight

19 WiMax Technology Non Line of Sight

20 WiMax Technology Base Station Ranges with 90º sector antenna

21 WiMax Technology Base Station Ranges with omni antenna

22 WiMax Technology Range example (Telenor) Equipment Propagation Mode 16QAM modulation included coding (6 Mbit/s) Standard Base Station (90º sector antenna) with outdoor CPE (Consumer Premises Equipment LOS OLOS NLOS Rural NLOS Urban 48.5 km 15.3 km 4.9 km 1.9 km

23 WiMax Technology Post and Teletilsynets restrictions in 2.3 GHz Band Channel Distance (MHz) Point A (MHz) -39 db Point B (MHz) -80 db Point C (MHz) -92 db 22 MHz 10 MHz 12 MHz 13.5 MHz Break Points in the Spectrum Mask

24 WiMax Technology Data from antennas used by Telenor Antenna Frequency Effect (W) Effect (db) Gain Integrated 60º BS Antenna 3.5 GHz 0.5 W 27 dbm 14 dbi Integrated 10º Consumer Antenna 3.5 GHz Gapfiller Link Antenna 5.8 GHz 17 dbi 0.08 W 19 dbm 23 dbi

25 Getting close to the end... Personal Experience with WiMax

26 WiMax Acknowledgements Thank you very much for the information Trond Berrefjord at Telenor Ingvar Henne at NextGentel Rune Bøe at Post og Teletilsynet Sources: Wikipedia, Google, Wimax Forum Questions and Comments?