ATNJ Maritime CPE Solution: 120 km Offshore 5G Connectivity for Smart Ocean Fleets
2026-09-21
ATNJ Maritime CPE Solution: Bringing High-Speed 5G Connectivity to the Open Sea
Shenzhen ATNJ Communication Technology Co., Ltd. presents its flagship Maritime CPE Solution — the ATNJ 5G Cloud Box — a purpose-built Integrated Maritime 5G CPE Terminal that extends high-speed, stable 5G coverage from the coastline out to the high seas. Designed for fishing vessels, aquaculture platforms, patrol boats and offshore engineering facilities, the solution turns the "information island" of offshore operations into a fully connected smart ocean.
Industry Challenge: The Communication Gap at Sea
- Limited signal coverage — cellular networks stop at the nearshore, while satellite links remain costly and unstable.
- Poor quality and low throughput — narrow bandwidth and high latency cannot support HD surveillance or big-data backhaul.
- High deployment and maintenance cost — complex installation demands specialised technicians, pricing out small fishing vessels.
- Inefficient safety monitoring — the lack of real-time positioning creates supervision blind spots and slows emergency response.
The Solution: ATNJ 5G Cloud Box
The ATNJ 5G Cloud Box is an integrated communication terminal engineered specifically for smart oceans. Built on the deeply optimised N28 700 MHz "golden band", it breaks through the distance limits of offshore communication and pushes stable 5G coverage out to the high seas, delivering round-the-clock, highly reliable network support in harsh marine environments.
Core Advantages
- Wide coverage, reach far seas — N28 700 MHz optimisation delivers ultra-long-range coverage with up to 120 km stable communication over open sea.
- High throughput, ultra-fast connectivity — 5G 4*4 MIMO with high-order modulation doubles throughput versus 2*2 MIMO, powering HD video surveillance and real-time big-data backhaul.
- High reliability, robust protection — industrial-grade design resists salt spray, humidity and vibration, operating stably from -35 ℃ to +75 ℃.
- Easy deployment, plug-and-play — an integrated design requires no specialised technicians; simply power on to activate, dramatically reducing installation and O&M costs.
Multi-Mode Converged Communications
The terminal combines smart dual-mode switching (automatic satellite failover within milliseconds when the 5G link fades), Tiantong satellite voice and short messaging as an emergency lifeline, and BeiDou messaging for positioning and position backhaul — forming a "5G-first, satellite-backup" all-domain network covering sea, land and air.
Coverage by Zone
| Zone | Distance | Capabilities |
|---|---|---|
| Coastal Zone | 0–10 km | Peak signal and throughput; 4K HD surveillance, real-time data backhaul and crew entertainment. |
| Near-Shore Zone | 10–60 km | Stable links for video calls, fishing-vessel dispatch and all-weather data transmission. |
| Offshore Zone | 60–120 km | Ultra-long-range connectivity with real-time position reporting and reliable emergency comms. |
Smart Management & Flexible Scalability
- Smart positioning & track tracking — BeiDou/GPS dual-mode positioning with accuracy better than 5 m, supporting real-time track reporting and remote monitoring.
- Flexible network expansion — Wi-Fi 6 ship-wide coverage plus a Gigabit RJ45 port for external switches, cameras and devices.
- High-availability comms & remote O&M — dual-SIM dual-standby with ≤3 s automatic switching, running Linux OpenWrt for remote configuration, upgrades and secondary development.
Key Technical Specifications
| Parameter | Model A (Standard) | Model B (Enhanced) |
|---|---|---|
| N28 700 MHz Range | 80 km (45 nm) | 120 km (67.5 nm) |
| MIMO Antenna | 2*2 MIMO | 4*4 MIMO |
| EIRP | 23 dBm (Class 3) | 26 dBm (Class 2) |
| GNSS Positioning | — | BeiDou / GPS, accuracy <5 m |
| Dual-SIM Backup | Supported | Supported (≤3 s switch) |
| IP66; MTBF ≥ 70,000 h; operating -35 ℃ to +75 ℃ | IP66; MTBF ≥ 70,000 h; operating -35 ℃ to +75 ℃ | |
Application Scenarios
The solution is already being applied across the maritime industry:
01 Maritime Surveillance & Law Enforcement — high-speed network support for coast guard and patrol vessels, enabling real-time HD video backhaul and remote command dispatch.
02 Smart Fishery & Aquaculture — stable links for fishing vessels and aquaculture rafts, supporting catch monitoring, water-quality data backhaul and crew communication.
03 Offshore Energy & Engineering — reliable communication for offshore wind farms and drilling platforms, enabling remote equipment monitoring and real-time data transmission.
04 Marine Environmental Monitoring — data backhaul for ocean monitoring buoys and hydrological stations, enabling real-time collection and early warning of marine parameters.
About ATNJ
Shenzhen ATNJ Communication Technology Co., Ltd. is a high-tech enterprise specialising in the R&D and application of wireless communication technologies. Focused on smart oceans, IoT and the industrial internet, ATNJ delivers stable, efficient and intelligent communication solutions to customers worldwide.
