This marks the first commercial network deployment of CENTAURI in Japan, implemented jointly with our partner in Japan, NTT ADVANCED TECHNOLOGY CORPORATION (NTT-AT)
Matsuyama Castle sits above the city with a view you do not want to compromise, yet it is exactly the kind of site that demands modern connectivity: public Wi-Fi, live video transmission, and resilient backhaul. Ehime CATV, the cable operator serving Matsuyama City and surrounding areas, faced a familiar constraint. Fiber would be difficult to lay without physical and landscape tradeoffs, and microwave links would struggle to deliver the speed and low latency required. So they deployed Transcelestial’s CENTAURIs instead.
The problem: “high quality network” without disrupting the site
For locations like cultural landmarks and tourist destinations, the question is not just throughput. It is whether you can upgrade the network without adding visible infrastructure or taking on long construction timelines.
Ehime CATV’s requirement at Matsuyama Castle was clear:
- Strengthen Wi-Fi services and video transmission
- Preserve the scenery and site constraints
- Avoid the practical limitations of fiber construction and the performance limits of microwave links
The deployment: 800 meters, installed fast, operated like infrastructure
CENTAURI was used to connect Matsuyama Castle (Bagugu Yagura, ~130m above sea level) to the Ehime CATV building at the foot of the mountain, over an approximately 800m path.
Before commercial adoption, the teams ran a verification period from Nov 7 to Dec 17, 2025, confirming link status over about one month.
Two operational details matter here because they translate directly into cost and feasibility:
- Alignment and adjustment at installation was completed within one hour, demonstrating workability in the field.
- During the trial period, the link remained stable despite environmental changes including rain and dense fog (visibility changes) and strong winds (vibration), with no significant impact on communications.
CENTAURI key characteristics
CENTAURI is designed to deliver high-speed communication equivalent to optical fiber while minimising landscape impact.
- High-speed, long-distance optical wireless:
- 10Gbps model: up to 3km
- 25Gbps model: up to 1km
- Easy installation: automatic optical axis adjustment using “physical AI,” enabling short installation time
- Rapid implementation without license requirements: no need for a radio station license, and no need to lay fiber, which can reduce time-to-deploy and keep initial costs lower
- Deployment proof: ~800m link, installed and aligned within 1 hour, verified across ~1 month, stable through rain, fog, and strong winds
What this unlocks next (and why it matters)
Ehime CATV plans to expand usage into other tourist spots such as Shiroyama Park, and also evaluate broader applications including remote island areas.
From NTT-AT’s perspective, the learnings from this deployment will be used to propose a wider range of use cases, including:
- Permanent building-to-building links
- Temporary links for tourist destinations and around important cultural properties
- Rapid restoration of communications infrastructure in disasters
- Event venues
When you remove trenching and licensing friction, “where connectivity can go” changes. Not everywhere needs new fiber. Some places need a new category of infrastructure.
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For press enquiries and requests, please contact: Rachael De Foe ([email protected])
For more, visit our website www.transcelestial.com
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About Transcelestial:
Transcelestial has mass-produced a solution for superfast global Internet distribution that leverages its proprietary wireless laser communication technology to create a wireless distribution network between buildings, traditional cell towers, street-level poles and other physical infrastructure – with a much lower total operating cost for Mobile Network Operators, Internet Service Providers and enterprises.
Transcelestial aims to develop a constellation of LEO satellites allowing their laser network to not only connect inter-cities but upwards in space to connect continents globally.
Transcelestial has won numerous industry and global awards such as Most Frontier Company by Asiastar10x10, SPIFFY San Andreas Award for Most Disruptive Technology by Telecom Council, Forbes 30 Under 30 to their CTO Dr. Mohammad Danesh, Edge 35 Under 35 to their CEO Rohit Jha, The Most Ambitious Start-Up in Photonics Award by The Optical Society (OSA).
About NTT-AT:
NTT Advanced Technology Corporation (NTT-AT) is a technology company within the NTT Group that bridges advanced research and real-world application. NTT-AT commercializes cutting-edge technologies developed within the NTT Group and by external partners, delivering solutions across telecommunications, IT infrastructure, environmental technology, and more.
