Meet Our Team

• #HAPS

Akihiko Tajika

• Profile
  After working as a system integrator, worked on launching new services at a major telecommunications carrier. After transferring to SoftBank, he engaged in areas such as indoor and outdoor area countermeasures, development of satellite communication systems, development of disaster countermeasure solutions, participation in the HAPS business, and research on laser energy transmission.
• Research area
  • HAPS
  • Laser energy transmission
• Major awards
  • FY2015 second half SB Award TU 1st and 2nd place awarded simultaneously
• Major publications / papers
  • At the 2021 Institute of Electronics and Information Engineers' symposium "The Role and Future Prospects of Satellite Communications as a Disaster-Resistant System," SoftBank's Initiatives in Satellite Communications and Disaster Countermeasures were Presented.
• Major achievements
  • Introduction of outdoor ICS repeater stations (world's first large-scale deployment of 4,000 units).
  • Development of indoor countermeasure solutions.
  • Invention and development of indoor ICS repeater (world's first 10,000 units).
  • Invention and development of satellite mobile backhaul using band sharing (world's first over 4,000 stations).
  • Development of small outdoor base stations using SIP protocol (world's first 4,000+ units).
  • Contributed to the launch of a large number of satellite backhaul on 3.11, surprising other operators (more than 500 lines).
  • Satellite temporary station system/mobile base station vehicle production (initially 300 types, currently more than 500 types).
  • SB independently establishes Minamitorishima and Iwojima mobile phone areas and receives words of gratitude from the Self-Defense Forces.
  • Invention and development of high-speed satellite communication system (world's first TCP 100Mbps, now the de facto standard around the world, sales in the tens of thousands).
  • Participation in the HAPS project.
  • Research on laser energy transmission system.
• Passion
  I am conscious of connecting inventions and ideas to problem-solving. I am also passionate about making things possible that were previously impossible.
  I try to do work that helps people. Over 4,000 stations have been deployed to remote islands and rural areas via satellite backhaul. On 3.11, we entered Tohoku ahead of other companies using a base station vehicle that I had built myselves, and made loaned telephone calls to evacuees. Also, the Iwo Jima area was greatly appreciated by the Self-Defense Forces (mobile phones were not available until then).