Systems beyond 3G. System architectures as follow up to the BRAIN vision (including the world-wide work in ITU, Japan, Korea)

Transcription

1 Systems beyond 3G System architectures as follow up to the BRAIN vision (including the world-wide work in ITU, Japan, Korea) Werner Mohr Siemens AG, Munich, Germany

2 Outline Introduction Trends in mobile communications Society trends, services and applications Technological trends Vision for systems beyond third generation Requirements and spectrum User scenarios and user perspective Vision Research areas Other activities ITU Japan Korea Conclusions

3 Living spaces 200x: Scenarios Public places: will offer a variety of edutainment and sport thrills Home: the intelligent home supports private activities as well as business processes Personal: intelligent personal systems minimize routine work activities Transportation: higher efficiency and safety through better information processing Work: new forms of flexible team networks outperform old hierarchical forms of organizations All human living spaces significantly build on I&C technologies

4 Application fields: Practically everywhere Green processes: are essential for a sustainable development of planet earth Education: education & training is a lifelong activity Leisure, entertainment: spectacular, multisensory entertainment will meet the demands from more leisure time Knowledge-based business: rather than monetary wealth access to knowledge will define have and have-nots Electronic commerce: desktop shopping is a time-saving alternative to traditional ways of shopping Health: improved diagnosis, more prevention, less treatment

5 Applications for wireless communication Receiver Human Machine Human VoIP Video phone/conference Interactive games Chat Visual mail/audio mail Text mail Remote control Sender Recording to storage devices: voice, video, etc. Machine Video relay broadcasting Video supervising Human navigation Internet browsing Information service Music download Location information services, distribution systems, etc. Data transfer Consumer electronic device maintenance Real time Permit delay Source: NTT DoCoMo Support of real time and non-real time services

6 Within the next 5 years Internet access will happen mainly via mobile devices Subscriptions worldwide (millions) Mobile Fixed Mobile Internet Fixed Internet Mobile subscribers Mobile Internet subscribers

7 Bandwidth evolution and costs The use of new technologies increases the capability in access and core networks Simultaneously the prices for bandwidth decrease dramatically Bandwidth evolution Equipment costs 1 T 100 G 10 G 1 G 100 M 10 M 1 M 100 k 10 k Bandwidth (bit/s) PDH 140 Mbit/s PDH 34 Mbit/s PDH 565 Mbit/s SDH 2.5 Gbit/s ISDN-BRI 144 kbit/s Early cellular modem 2.4 kbit/s WDM 40 x 10 Gbit/s WDM 16 x 10 Gbit/s GSM modem 9.6 kbit/s SDH 10 Gbit/s Cable modem Mbit /s PHS 32 kbit/s WDM 96 x 2.5 Gbit/s WDM 16 x 2.5 Gbit/s VDSL 50 Mbit/s FTTH 155 Mbit/s ADSL 3-8 Mbit/s GPRS 115 kbit/s Core Broadband LEO Edge 384 kbit/s UMTS 2 Mbit/s Fixed network Mobile network Access Cost [US$]/ (Mbit/s*km) ` 63 Electrical cable Example: Equipment experience curve of Atlantic Cables Accumulated Transatlantic Capacity [Mbit/s] Source (right panel): TeleGeography Optical fiber ETDM WDM

8 Advance of the Internet and IP The Internet became a mass medium. The Internet Protocol (IP) will dominate data network architectures Development of the Internet The role of IP in data networks No. of Internet users in millions Mass consumer Business people UNIX workstation ARPAnet Mainframe Mobile PDA PC "Internet everywhere" NC Java WWW 3D WebTV Mobility Experts Universities and armed forces WWW WWW Computer Network Voice Voice IP Mobile Mobile shopping shopping Unified Unified Messaging Messaging PSTN PLMN Corporate Network Switch... 0, Source: ITU

9 Impact of IP on mobile networks and systems IP type traffic will exceed real time traffic in near future Many services and applications are Internet based Backbone networks are upgraded to cope with the rapidly increasing IP traffic volume WDM and DWDM optical links are becoming available to provide practically infinite backbone capacity QoS Mobile systems beyond 3G have to be optimized for efficient IP transport

10 Requirements on systems beyond third generation Support of a wide range of services symmetrical and asymmetrical services QoS for real time services and efficient transport of packet oriented services seamless service via different technologies global roaming efficient support of broadcast and distribution services Wide range of supported data rates according to economic and service demands with maximum data rate up to about 20 Mbps and beyond Economic deployment of system in entire coverage area with optimized radio interfaces for macro cells micro cells indoor, hot spots and broadcast Flexible allocation of required system capacity

11 The user view My s, my voice my desired web-content my bank account my games, music and much more are with me wherever I am at any time on my favorite devices

12 MultiSphere Level Concept 1 The PAN 2 The Immediate Environment 3 Instant Partners 4 Radio Accesses ➄ CyberWorld Source: IST WSI Project

13 A complete portfolio of specialized radio solutions is required Mobile radio access networks are designed to meet certain maximum requirements for grade of mobility and range WLANs are designed for high data rates, low ranges and generally low mobility Mobility & Range High Speed Vehicular Rural Vehicular Urban Pedestrian Indoor Fixed urban Personal Area GSM DECT Bluetooth higher data rates Proposed new radio interface under discussion UMTS IEEE a BRAN Hiperlan2 increased mobility BRAN Hiperaccess Mb/s Total data rate per cell

14 Vision of Wireless Communications Beyond 3G Seamless network of complementary access systems Services and applications download channel DAB DVB IP based core network New radio interface Wireline xdsl return channel: e.g. GSM cellular GSM IMT-2000 UMTS WLAN type short range connectivity other entities

15 increased mobility and cell size Layered system structure beyond third generation distribution layer cellular layer hot spot layer personal network layer fixed (wired) layer DAB and/or DVB possible return channels 2G: e.g. GSM IMT-2000 UMTS X X X X WLAN type e.g. ETSI BRAN horizontal handover within a system X X X X X X X X X vertical handover between systems full coverage global roaming full mobility not necessary individual links full coverage and hot spots global roaming full mobility individual links local coverage hot spots global roaming local mobility individual links short range communication (e.g. Bluetooth DECT) global roaming individual links no mobility global roaming individual links

16 Challenges / major necessary research areas I Radio Investigation of new radio interface concepts towards higher data rates and higher mobility by combination of suitable technologies; optimization for efficient IP packet transport Software defined radio concepts to support multiplicity of access system environment Advanced antenna concepts to enhance range for high data rate and high mobility systems Advanced detection schemes, such as multi user detection and interference cancellation Improved propagation channel models for new frequency ranges Link adaptation (modulation, coding, ARQ, power control) Joint optimization of link and MAC protocols

17 Challenges / major necessary research areas II Radio Dynamic channel assignment Advanced signal processing (joint source and channel coding) Hardware technologies Radio (HF > 5 GHz, RF >> 5 GHz) Components (configurable radio, SiGe RF, system on chip) Technologies for location-based services (based on GPS, Galileo, UWB, time delay,...) Access technologies Mobile networks and broadcast systems for multimedia service provision Personal Area Networks (PANs)

18 Challenges / major necessary research areas III IP network architecture for mobile systems IP-based Radio Access Network (RAN) architecture beyond 3G IP Quality-of-Service and Multicast for wireless / mobile hosts to support advanced multimedia services (incl. real-time applications) IP autoconfiguration to support seamless mobility Improvement and extension of IP for mobile applications and optimization for radio transmission Software architecture for routing, security, signal processing, reconfigurability etc. Mobile middleware Active / programmable networks, mobile agents Database technologies to support user mobility and access control (AAA)

19 Challenges / major necessary research areas IV Mobility technologies Ad hoc and self organizing networks Interworking of different access systems on an IP-based common platform with horizontal and vertical handover to support seamless mobility Security Key management, public key infrastructure Registration and authentication technologies End-to-end security Security concepts for specific radio technologies Services Open Application Programming Interfaces Service management (mobility, conversion), location-based services

20 ITU, activities ITU-R WP8F created in Spring 2000 as successor of ITU-R TG/8F ITU-R subdivided into several working groups with links to other groups In parallel ITU-T SSG IMT Network established including a visions group Main activities in ITU-R WP8F Visions Group: Currently, collection of information from any source Updated Version of Preliminary Draft New Recommendation (PDNR): Vision and Objectives of the Ongoing Enhancement of IMT-2000 and of Systems Beyond IMT-2000 Editor: Mr Jim Hoffmeyer, Cingular, assisted by: Mr John Visser, Nortel Networks (Chairman of ITU-T SSG IMT Network) Contributions are not yet discussed in detail No decisions made yet, e.g. on requirements Actual Document: 8F/TEMP/111-E, 26 February th Meeting of Working Party 8F, February 2001, Rabat, Morocco Source: ITU

21 ITU, organization Organisation of IMT-2000 and beyond activities in ITU-R WP8F and ITU-T SSG IMT Network ITU-R Working Party 8F Radio Technology Circulation Vision Developing Satellite Spectrum ITU-R Working Party 8D Satellite ITU-T Special Study Group IMT Network Source: ITU

22 Japan, activities Activities in Japan are driven by MPHPT - Ministry of Public Management, Home Affairs, Post and Telecommunications CRL - Communication Research Laboratory NTT DoCoMo Main features: broadband communications new frequency bands up to 60 GHz possibly new radio interface combination of different access systems adaptive antennas software defined radio concepts radio over fiber for connection to microwave broadband systems

23 Japan, positioning of systems Anywhere Higher Throughput Mobility High Speed (Nationwide) Moderate Speed (Citywide) Walking (Premises) Static (Indoor) 2G IMT G High-speed High-capacity Low bit cost IP-based? (2001) Information Speed (Mbit/s) Beyond 3G ( ?) Wireless Access (2002) Millimeter-wave LAN th generation according to CRL ITS High data rate High mobility System roaming and seamless connection to broadband networks HAPS

24 Japan, 4G view 4th Generation System Image IMT-2000 Adaptive Array Antenna Wireless Entrance Link 4G Multi-mode Terminal by Software Radio BS Macro Cell Optical Entrance Link Micro Cell

25 Korea ETRI - Electronics and Telecommunications Research Institute established in 1976 Mission: Contribute to the development of economy and society by developing new knowledge and technologies in information, telecommunication and electronics, and produce qualified manpower in information technology field Advanced Mobile Communication Department Primary mission is to develop 3G performance enhancement technologies and high speed mobile packet technologies Smart antenna and multi-user detection technologies SDR technology TDD technology for asymmetric high-speed packet data services Core technologies for high-speed and broadband mobile packet telecommunication Main activities beyond 3G: Currently, collection of information from any source Source: ETRI

26 Conclusions Tremendous growth of mobile subscribers expected Parallel growth of number of Internet and mobile radio users Wide range of services to be supported in all radio environments Powerful platform of complementary access systems available for range of supported data rates versus mobility Integration of different access systems on common IP-based core network platform including horizontal and vertical handover as one common virtual system beyond 3G Many technical challenges have to be solved by international research and cooperation to make this vision happen