Study Group 8 Seminaron

Tomorrow’s Technological Innovations Related to WRC-07

Session 3 : Working Party 8D

Introduction

Overview of Activities in Working Party 8D

Trend of New Technology Development 　in Mobile Satellite Service (MSS) and

Radionavigation Satellite Service (RNSS)

9 September 2004

Takeshi Mizuike (KDDI Corporation, Japan)Chairman, WP 8D

ITU-R Activities To Support Development of MSS and RNSS

• New technology developmentNongeostationary satellitesCDMAAdvanced GSO satellites (Deployable antenna)

• User needs for new applicationsPortable and handheld terminalsIP and high-speed data transmission

• Requirements for new spectrum allocations• Criteria for frequency sharing and coordination• Technical and operational characteristics

• Development of Recommendations• Studies for CPM preparation• Decisions by WRC

Contribution of WP 8D in the areas of MSS and RNSS

• Voice, Facsimile, Telex• ISDN, High Speed Data (~64kbps)• IP and broadband applications

• Global coverage• Useful for maritime and aeronautical applications• Frequency sharing with other Services• System development cost

Technical and Operational Properties of MSS and RNSS

Development of New Applications

•GMDSS•AMS(R)S

Distress and Safety Services

Maritime MSSShip-borne ES

Aeronautical MSSAeronautical ES

Land MSSPortable ES &Handheld terminal

Trend of Technology Development in MSS

GSO MSS 　in bands 1.5/1.6GHz,

2.5/2.6GHzMMSS → AMSS & LMSS

Generic Allocation (WRC-97)

GSO in 14GHz bandSecondary allocation

for MSS (E-to-s)Including AMSS

(WRC-03)

Advanced GSO In 1.5/1.6GHz band

・ Handheld MES for voice・ Portable MES for high speed data

Broadband (IP) applications

High performanceGSO MSS

NGSO MSS・ Below 1GHz (LEO) for data ・ 1-3GHz (LEO & MEO) for voice and data

Use of Nongeostationary

satellites

Non-geostationary satellites• Small transmission delay and propagation loss• Global coverage• Complicated system control (Satellite hand-over)

LEO and MEO in 1-3GHz band (Mobile phone by satellite)• Use of TDMA and CDMA• Frequency allocation for Service and Feeder Links (WRC-92, WRC-95, WRC-97)• Frequency sharing studies by WP 8D

LEO below 1GHz (Data applications)• Frequency sharing with terrestrial services such as MS (DCAAS)• Studies for additional allocation (Res. 214) : No allocation (WRC-03)• Feeder link in 1.4GHz band for NGSO MSS below 1GHz Secondary allocation (WRC-03) Compatibility studies (Res. 745) for WRC-07 Agenda item 1.17

New Technology Development of MSS

New Technology Development of MSS

Advanced GSO MSS satellites• Large deployable antenna• Beam forming and Multiple spot beams• High e.i.r.p. and G/T• Hand-held terminal (Mobile phone by satellite)• High speed data applications by portable terminal• Coverage for hot-spot (Global coverage by NGSO satellites)

Needs for more spectrum allocation• Additional allocation : 7MHz in 1.5/1.6GHz bands (WRC-03)• Sharing studies with other services Agenda item 1.7 (Res. 744) (WRC-07)

New Technology Development of MSS

Broadband applications in MSS• IP applications (Internet access from everywhere)• Broadband applications : Requirement for a wider spectrum range• 14.0-14.5GHz band : Secondary allocation for MSS (E-to-s)

including AMSS (WRC-03)

Modernization of civil aviation telecommunication systems• Study of current satellite frequency allocations• Agenda item 1.6 (Res. 415) (WRC-07)

Technical Characteristics of MES• GMPCS MoU• NGSO MSS MES : Recommendation ITU-R M.1343• GSO MSS MES : Recommendation ITU-R M.1480• Compatibility with other services in adjacent frequency bands

IMT-2000 Satellite Component

• Radio Interface : Rec. ITU-R M.1457 (RA-2000) and its Revisions• Satellite component : Responsibility of WP 8D

in close coordination with WP 8F

• Initial spectrum allocation in 2GHz band• Additional frequency identification by WRC-2000

• Agenda item 1.9 (WRC-07) : Studies underway at JTG6-8-9• Sharing and adjacent band compatibility in 2.5GHz band between the terrestrial and satellite components of IMT-2000 Studies by JCG8F-8D : Draft new Report

• New applications : Broadcast and Multicast by satellite

New Generation Systems of RNSS

Currently operating RNSS systems • 1215-1260 MHz and 1559-1610 MHz bands• Use of NGSO satellites• Global positioning capability• One of the most suitable applications of satellites (No other means for precise positioning and global coverage)

Needs for new spectrum allocations for the next generation systems• Additional allocations (WRC-2000)• Studies for sharing with other services and system coordination Agenda item 1.15 (WRC-03)

Current Activities of WP 8D

• Studies on 20 Questions of ITU-R

• Responsible Group for WRC-07 Agenda itemsAgenda item 1.6 (Resolution 415)Agenda item 1.7 (Resolution 744)Agenda item 1.17 (Resolution 745)

• Sub-working group structure SWG 8D1 : MSS system concepts, Technical characteristics,

Performance objective SWG 8D2 : IMT-2000 satellite component, Sharing within MSS SWG 8D3 : Sharing with other services

(FS, MS, BS, space science services) SWG 8D4 : Radionavigation Satellite Service, Feeder link

Study Group 8 SeminarProgram of Session 3 for Working Party 8D

3.1 Introduction by WP 8D ChairmanMr. Takeshi Mizuike (KDDI Corporation, Japan)

3.2 Overview of new technology trends in the mobile satellite serviceMr. Marcus Vilaca (Inmarsat, UK)

3.3 Satellite digital multimedia broadcast 　Mr. Laurent Combelles (Alcatel, France)

3.4 Satellite systems supporting modernization of civil aviation telecommunication systems 　Mr. David Weinreich (Boeing, USA)

Questions and Answers