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Gatehouse Satcomチーム5G NTN 、リソース、知識
Analyze, Validate, Operate: The path from NTN idea to live service
Every NTN service starts as an idea and has to end as something that works in orbit. Between those two points is a journey, and we have spent 25 years learning where it runs smoothly and where it gets difficult. This piece walks through that journey the way we take customers through it, in three…
Software lifecycle management for regenerative NTN payloads
Updating a gNB in orbit takes weeks across a constellation. During that campaign, satellites running different software revisions must hand traffic between each other with protocol consistency intact.
Hybrid BGAN and 5G NR NTN: Building Deployment Resilience from Complementary Link Characteristics
A hybrid satellite architecture only has engineering value if the two bearers fail differently, scale differently, and serve distinct roles across the deployment lifecycle. Combining BGAN with 5G NR NTN exploits the specific propagation, protocol, and ecosystem characteristics of each path to maintain operational continuity while validating and scaling a standards-based system. This article examines…
Why time system mismatches cause silent failures in NTN deployments
An NTN system draws timing inputs from multiple sources. UE’s including IoT devices synchronise to GPS time via GNSS receivers. Orbital data and ephemeris predictions are commonly delivered in UTC. Computer infrastructure may internally timestamp in TAI. Operators schedule beams and analyse logs in UTC or local time. Each of these time systems is offset…
2026年、現実となった年
数年にわたる試行錯誤を経て、モバイル・ワールド・コングレス2026は市場の勢いに根本的な転換をもたらした。5G衛星通信に関する議論が「実現するか」から「どのくらいの速さで」へと移行した理由を解説する。今年のフィラ・グランビア会場に立つと、空気感が根本的に異なっていた。MWC2022が衛星から携帯電話への「可能性」を提示した場だったのに対し…
NB-IoT 5GNR ハイブリッドが電力消費を抑えながら衛星IoTを拡張
ほとんどの組織は「衛星通信」を必要としていません。必要なのは具体的な成果です。何年も稼働し続けるセンサー。地上波のカバー範囲を超えて可視性を維持する資産。リンク予算が逼迫した瞬間に運用コストが高騰しないデバイス。だからこそ、今日のNTNプロジェクトにとって最も現実的なアーキテクチャは単一の衛星…
BGAN and 5G NR NTN: Designing Continuity into a Standards-based Satellite Architecture
A combined solution using BGAN alongside 5G New Radio NTN designs continuity into the system while moving towards a standards-based future. The most serious programmes are building an on-ramp, with both bearers serving defined roles across the deployment lifecycle. Why this matters now 3GPP Release 17 made NTN a standardised air interface. That was the…
衛星向け5Gの基礎を理解する：5G NTNとは何か？
As demand for global connectivity continues to grow, extending 5G beyond terrestrial networks has become an increasingly important part of the telecommunications landscape. Satellite-enabled 5G is now viewed as a practical complement to terrestrial infrastructure, enabling coverage in remote, rural, and hard-to-reach areas where ground-based networks remain limited. In recent years, standardisation efforts within 3GPP…
5G NTN NTNにおけるLEO 役割5G NTN 接続性の未来を切り開く
低軌道（LEO）への移行は、単に衛星を地上に近づけるだけでなく、宇宙をグローバル5Gエコシステムに直接統合する動きである。LEO 現代の接続性に必要な低遅延・高スループットを提供する一方で、真の課題は移動する「セル」とドップラー効果の極端な動的特性管理にある…