Overview of Satellite Communications System Space Communications Division Global ICT Strategy Bureau May 7, 2015

Disaster Recovery Large Bandwidth Multicasting Toward Broad Region Mobility Flexible to secure a network using Flyaway, SNG etc. Ubiquitous, simultaneous casting to multiple receiving stations. Both low and high data rate are available. Flexibility Easy to install. Flexible bandwidth. Anytime & Anywhere. A single satellite enables to cover one third of entire surface of the earth without time and cost of building a terrestrial infrastructure. NOT topographically-affected. Maintain a safe communication line as a disaster recovery measure (such as earthquake, etc). Isolated from terrestrial infrastructure. Feature of Satellite Communications  Very wide coverage (nationwide)  Various application (government/private, telecommunication/broadcasting)  Available both in normal and emergency times 1

JMA Seismic intensity （ Source ： Japan Meteorological Agency ） Date Duration Magnitude Depth :46 JST :46 UTC 6 minutes 9.0 M W 32km Tsunami Death Missing Destroyed Buildings As of May 1 st, 2011 Maximum 38.9m flooded 807km 2 area 14,704 people 10,969 people 350,000+ Findings from the Great East Japan Earthquake 2 The Earthquake …  Was one of the most powerful earthquake in the modern era  Caused both quake and tsunami  Damaged various critical infrastructure severely Critical Infrastructure Volume of Damage Telecom Station (fixed) 1 Million subscribers Telecom Station (mobile) 14,800 Base stations Electricity 2.6 Million subscribers Gas 2.1 Million subscribers Water supply 2.3 Million subscribers Road (National Highway) 1.1 Thousand km Railway 1.0 Thousand km modified Mercalli scale caliculated) Ⅰ Ⅱ Ⅲ Ⅳ Ⅴ/ⅥⅤ/Ⅵ Ⅶ Ⅷ Ⅷ/ⅨⅧ/Ⅸ Ⅸ/ⅩⅨ/Ⅹ Ⅹ+Ⅹ+ （ Source ： Japan Reconstruction Agency ）  Many terrestrial telecom NWs became disorder/unavailable  On the other hand, Satellite communications systems were still sound/available, and used for disaster-recovery, enterprise BCP, and other emergent purposes.

Applications of Satellite Communications 3 UAV HSA

Designing specification of satellite and total system network Launch of satellite Feasibility Study, Establishment of business and financial scheme Life Cycle of Satellite Communications System 4 Procurement and production of satellite and total system network Procurement and installation of Hub and VSAT stations Training for satellite network operation Operation and maintenance Planning and research System designing Procurement and production Satellite Launch Operation  Adequate system design required in prior to the satellite launch  Both satellite and earth stations included in a system  International frequency coordination process required (if owned) 4

Satellite Component in the Telecommunications Infrastructure 5 5 It’s desirable to combine various infrastructure adequately, Optical fiber, Copper Line, Wireless, … andSatellite systems Optical fiber, Copper Line, Wireless, Satellite Adequate Combination We are very pleased if we can support your activities.