The IEEE WirelessMAN Standard for Broadband Wireless Metropolitan Area Networks

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1 The IEEE WirelessMAN Standard for Broadband Wireless Metropolitan Area Networks ITU-APT Regional Seminar Busan, Republic of Korea 10 Sept 2004 Ken Stanwood CEO, Cygnus Multimedia Communications Vice-Chair, IEEE Working Group 1 Broadband Wireless Access The Problem to Solve 2 1

2 The World Wants Access All over the world: Users want access to networks Network operators want access to customers Users want diverse media simultaneously Broadband Wireless Access flourishes where: Many users are dissatisfied with their access Network operators need to reach customers 3 Market Segments for Wireless Access 1 Gbps 150 Mbps FSO 50 Mbps PtP Data Rate 20 Mbps 10 Mbps 2 Mbps 500 kbps 56 kbps xdsl, Cable PmP <11 GHz Point-to-Multipoint 10-40GHz Fiber Residential SOHO Small Business Medium Business Mobile Backhaul Addressable Markets Multi- Tenant Residential Large Business 4 2

3 Broadband Access to Buildings The Last Mile Fast local connection to network Business and residential customers demand it Data Voice Video distribution Real-time videoconferencing Gaming applications Network operators demand it High-capacity cable/fiber to every user is expensive Construction costs do not follow Moore s Law 5 WirelessMAN: Wireless Metropolitan Area Network Basestation SOHO customer Residential customer Multi-tenant customers Core network Source: Nokia Networks repeater Basestation SME customer 6 3

4 Guaranteed Data Access in Metro Ethernet Ethernet UNI EVC 1 CE SS EVC 2 Optical Metro Ethernet EVC 3 Base Station Ethernet Backhaul CE Ethernet UNI SS 7 Vision - Wireless Multimedia Distribution Broadband Service, Cable, DSL, IP Set Top Box WiMAX /11 AP Real-Time Video 2xHDTV d Real-Time Video 2xHDTV d Tablet PC with Camera CBR TDM Voice Real -Time Video 2xHDTV Best Effort Access d Cordless Phone d d Guaranteed and Best Effort Access /11 /11 Gaming HDTV Pocket PC 8 4

5 Hierarchical Systems BACKHAUL INDOOR CPE Non Line of Sight Point to Multi-point & INTERNET BACKBONE 9 Why for Multimedia Wireless Networks? provides True QoS Allows more efficient use of available spectrum than other wireless technologies Better security, authentication, and protection against theft of service Possibility to use both licensed and unlicensed frequencies 10 5

6 Properties of IEEE Standard Broad bandwidth Up to 96 Mbps (>70 Mbps throughput) in 20 MHz channel (in WirelessMAN TM -OFDM air interface) Supports multiple services simultaneously with full QoS Efficiently transport IPv4, IPv6, ATM, Ethernet, etc. Bandwidth on demand (frame by frame) MAC designed for efficient used of spectrum Comprehensive, modern, and extensible security Supports frequency allocations from <1 to 66 GHz ODFM and OFDMA for non-line-of-sight applications 11 Properties of IEEE Standard TDD and FDD Link adaptation: Adaptive modulation and coding Subscriber by subscriber, burst by burst, uplink and downlink Point-to-multipoint topology, with mesh extensions Support for adaptive antennas and space-time coding Beamforming and MIMO Extensions to mobility are coming next. 12 6

7 3 rd Gen. Technology in QPSK Q16 Q64 distance Adaptive Modulation variable modulation maximizes both air-link capacity and coverage time frequency Adaptive TDMA True bandwidth on demand and variable packet sizes provide differentiated, bursty services to multiple users Adaptive TDD variable asymmetry in a single broadband channel best matches bandwidth to demand 13 Coverage/Capacity Advantage of Adaptive PHY 2-3km* 2-3km* QAM % of Channel Capacity 99.95%* ~ 364 days 19.5 hrs/yr QPSK QAM-16 QAM-16 QAM-64 QAM-64 85% of Channel Capacity % ~ 4 hrs/yr QPSK QAM-16 QAM-64 70% Channel Capacity %, ~ 20 min/yr Modulation changes dynamically to match propagation path conditions * Typical for.01% rain rate mm/hr at 28GHz (egg. Chicago. SFO is about 35mm/hr) 14 7

8 Supports Beamforming and MIMO High system gain for maximum coverage and availability Use for extended range or increased capacity 15 IEEE Working Group 16 8

9 IEEE Leadership Chair: Roger Marks Vice Chair: Ken Stanwood Secretary: Dean Chang 17 Standards Genealogy c (2002) Amendment WiMAX System Profiles GHz (Dec 2001) a (Jan 2003) REVd (Sept 2004) e (2005 exp.) Original fixed wireless broadband air Interface for GHz Line -of-sight only, Point-to-Multi-Point applications Extension for 2-11 GHz Targeted for non line of sight, Point-to- Multi-Point applications like last mile broadband access Revision PAR for & a to add WiMAX System Profiles and Errata for 2-11 GHz in support of e requirements Amendment for Mobile wireless broadband up to vehicular speeds in licensed bands from 2-6 GHz Enables roaming for portable clients (laptops) within & between service areas 18 9

10 and ETSI Over 50 liaison letters between and ETSI (European Telecom Standards Institute) ETSI HIPERMAN Below 11 GHz Healthy cooperation Harmonized with WirelessMAN TM- OFDM 19 and ITU ITU-T January 2004: approved as draft recommendation for wireless extension of cable operator footprint. Included in-home ITU-R November 2004: Liaison statement Return statement from Working towards ITU BWA recommendation 20 10

11 WiMAX Purpose To promote a common broadband wireless standard To develop reduced scope profiles to ease development To fill the gaps in the IEEE process relative to the ETSI process To create a broadband wireless access conformance and interoperability certification process To act as a certification body 21 Conclusion IEEE WirelessMAN standards are: open in development and application addressed at worldwide markets engineered as optimized technical solutions significantly complete With test spec documents in development being enhanced for expanded opportunities 22 11

ETSI BRAN Technical Committee

ETSI BRAN Technical Committee Mariana Goldhamer ETSI BRAN Vice-Chair / HiperMAN Acting Chair Alvarion ETSI European Telecommunications Standards Institute 699 member companies from 55 countries in 5 continents