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Transcript
Technologies for Wireless Multimedia in the XXI Century Porto Seguro, Brazil 5 June 2001 Joanne C. Wilson ArrayComm, Inc. Convergence creates a huge opportunity Market Size 1 Billion Subs “WIRELESS INTERNET” 300 Million Subs WIRELESS INTERNET 200 Million Subs 2005 1998 Source: ITU, DLJ But not guaranteed success • “Gold standard” for performance is wired (dialup or LAN) connection • Service providers, ASP’s, application and content providers will focus on the moderate-to-high bandwidth customers • Pricing of wireless must be competitive with wireline alternatives Requirements for realizing the opportunity • The best aspects of wired connections PlayStation – reliability … per-user throughput … low cost … rich content • The best aspects of wireless connections – freedom to move … always on … ubiquity Requirements for realizing the opportunity (cont’d) • Low barriers to entry for service and content providers – cost … complexity • Low barriers to entry for access operators – cost … complexity Traditional cellular systems • Provide a partial solution – ubiquity and high-speed mobility • But ... – designed to support low bandwidth, intermittent subscribers – can not provide significant per-user throughput at low cost – expensive and complex networks • Best suited to high mobility, low bandwidth applications with specialized content Fixed Wireless Access systems (MMDS, …) • Meets a different set of the requirements – ubiquity, moderatehigh per user bandwidth, reliability • But … – neither mobile nor portable – typically require professional installation of end-user equipment (not low cost) Fixed Wireless Access systems (MMDS, …) • Only moderate spectral efficiency, and limited capacity below 3 GHz • Best suited as “local loop bypass” solutions Central elements of the “right” solution • Massive capacity to deliver high speed, high quality service to all customers • Spectral efficiency to enable economical operation in crowded bands below 3 GHz (portability requirement) Central elements of the “right” solution (cont’d) • Mass market pricing • Data-centric, open, IP architecture for content and services All of the above are achievable today Open Services Platform Content & Application Provider Subscribers Base station Base station NSP WAN Tunnel Switch(es) Enterprise Base station PSTN/ DSL Content Provider Cable Access & Transport Service Open Service Features • End to end IP connectivity for endusers – widest choice of enduser terminals and applications – common service and content base for wired and wireless users Open Service Features (cont’d) • PPP connectivity model – leverages existing ISP provisioning, management and billing tools – PPP sessions backhauled via L2TP Open Service Features (cont’d) • Clear separation of access and end-user service – shared access and transport network – connectivity to multiple ISP’s, ASP’s, content and VPN providers Radio Access Platform • Optimized air interface for reliable and efficient packet data transport • Time Division Duplexed (TDD) – maximizes flexibility in band selection (key below 3 GHz) – maximizes flexibility in accommodating asymmetry • Peak per-user data rates >1 Mbps • PC Card, USB, Ethernet end-user devices Radio Access Platform (cont’d) • “Smart” antennas using spatial processing maximize capacity and coverage Radio Access Features • Spatial processing + TDD – maximizes flexibility in band selection – provides unmatched coverage and spectral efficiency, 4 b/s/Hz or 40 Mbps/cell in 10 MHz • Native IP interface to wired network – simplifies network architecture – allows operator broadest choice in wired network elements – reduces network cost Keys to Delivering Portable Broadband Multimedia Access • Massive Capacity Enabling High Speed, High-Quality Service for ALL – Adaptive antenna technology (spectral efficiency) • Ubiquitous Coverage & Mass Market Pricing • Internet/Open Architecture for Content and Services Wireless DSL System Features 4 Bits/Sec./Hz/cell Spectral Efficiency Provides 400x capacity over 2G and 40x over 3G 1 Mbps to 40 Mbps User Data Rates Powered by IntelliCell Adaptive Smart Antenna Processing with Packet Switching End to End Wireless IP Access and Transport TDMA/TDD Packet Air Interface Licensed Spectrum Below 3 GHz Wireless DSL End to End Architecture Core spatial processing systems expertise Standard ISP infrastructure “W-DSL” Mobility Solution “W-DSL” Base Station Wireless DSL Subscribers Content provider Enterprise WAN “W-DSL” Base Station frame relay ATM etc. ISP AAA PSTN/DSL “W-DSL” chipset Application service provider Tunnel switch L2TP network server Cable AAA “W-DSL” Base Station “W-DSL” radio infrastructure Existing wired Broadband access Services Internet IMT-2000 & Wireless DSL compatibility IMT-2000 • Telephone • Voice & Data • Tariffs – Voice-per minute – Data-per packet Wireless DSL • Terminal • ALL IP Wireless • Tariffs – Flat Rate – Premium DSL rate Wireless DSL protects Operators high value voice services by relieving network of extended duration high-speed data traffic. IMT-2000 & Wireless DSL compatibility IMT-2000 Wireless DSL Wireless DSL does not need to be backward compatible with 2nd Generation voice standards Summary • The potential market is huge • Successful solutions have to address all of the market’s needs – the performance of the wired network – the applications of the wired network (the availability of the wireless link will foster new app’s) – the freedom of wireless • The challenge can be met with proven technologies in a Wireless DSL architecture The Reward ... 180 Million PlayStatio n 1 Billion 675 Million 250 Million Many Millions 65 Million 275 Million