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Airport Runway Fiber Optic Self-Healing Ring Network Transmission System Solution
Release date:
2026-06-10
I. System Overview
This scheme establishes a system connecting the airport runway area—covering key nodes such as the localizer and glide slope—with the air traffic control building. High reliability, multi-service convergence, and rapid self-healing capabilities. A dedicated fiber-optic communication transmission network. The system does not rely on the public IP network; instead, it employs an independent physical fiber‑optic ring architecture to exclusively carry core production services between the runway end and the central site.
II. Functions and Roles of the System Implementation
1. Highly reliable transmission of core business data
The system provides dedicated point-to-point transmission channels for runway‑end navigation services—such as ILS precision approach data—and meteorological services—such as data from weather sensors. These data, which demand extremely high levels of real-time performance and continuity, are delivered reliably and securely to the air traffic control building, supporting flight‑control decision‑making.
2. Production Scheduling Voice Communication
A dedicated internal voice communication channel is established between the airfield equipment room and the air traffic control building’s duty room, addressing the need for real-time communication between the field and the control center without relying on the public telephone network, thereby ensuring the confidentiality and speed of dispatch instructions.
3. Network Extension of Field-Assisted Data
While carrying core business traffic, the system also provides high-speed Ethernet interfaces to support network connectivity for routine operations and maintenance tasks—such as runway‑end video surveillance, equipment network management, and auxiliary data collection—thereby achieving “one network for multiple purposes with physical isolation.”
4. Data Aggregation and Cross-Scheduling
The system at the air traffic control building side boasts robust capabilities for service aggregation and cross‑scheduling. Data from distributed service nodes across all runways are centrally aggregated at the core, where they can be flexibly allocated to backend processing systems based on real‑time scheduling requirements, enabling centralized service management and unified routing.
III. System Architecture and Features
1. Network Architecture: Dual-ring, dual-homing, with high reliability
Physically, the system consists of two independent fiber-optic ring networks, each covering the area of Runway 1 and Runway 2 at the airport, respectively.
- Runway end node: Independent communication nodes are deployed at key locations along each runway, including the runway heading and glide slope. All nodes are interconnected in a closed loop via fiber-optic links.
- Air Traffic Control Building Central Node: A dual-node, dual-homing access design is employed. Two independent core aggregation devices are each connected to the left and right ring networks. Even if one of the core devices fails or undergoes routine maintenance, the other device can seamlessly take over all services.
Network Diagram of the Airport Optical Fiber Self-Healing Ring Transmission System
2. Protection Mechanism: Millisecond-Level Self-Healing
The core of this system lies in its Self-healing protection capability 。
- When a physical fiber break occurs in any segment of the ring network—such as one caused by construction excavation or rodent damage and aging—the system automatically reroutes traffic to the opposite direction of the ring, without the user noticing and with no service interruption.
- If a communication node at one end of a runway goes offline due to a power outage or hardware failure, the ring network’s optical path will automatically establish a bypass, ensuring that communication between adjacent nodes remains unaffected.
- The entire failover process typically completes within milliseconds (<50 ms), fully meeting the stringent continuity requirements of aviation communications.
3. Business Integration: Physically Isolated, No Mutual Interference
This system does not merely bundle cables from different services; instead, it employs a unified transmission platform to standardize the encapsulation of diverse service types—such as voice, data, and Ethernet—and transmit them over a single optical fiber.
- Advantages: Even when other network systems experience congestion or attacks, the core navigation and meteorological data channels remain independent and unimpeded, unaffected by any interference.
4. Easy to Extend and Maintain
The system employs open-standard interfaces, such as standard 2M digital interfaces and Ethernet interfaces. In the future, should new navigation equipment, meteorological sensors, or surveillance cameras need to be added, it will suffice to install the corresponding universal interface modules at existing nodes, without requiring replacement of the core network architecture. Moreover, thanks to its self-healing capabilities, operations and maintenance personnel can perform splicing or maintenance on the ground‑based optical cables without interrupting real‑time runway‑side services.
IV. Summary of the Plan’s Core Advantages
- Secure and Reliable: With a dual-ring physical topology and self-healing mechanisms, it delivers nearly 99.999% availability for the airport’s core production operations.
- One network, multiple capabilities: A single fiber-optic network simultaneously supports voice, data, and IP services, significantly simplifying on-site cabling complexity and reducing long-term operational and maintenance costs.
- Dedicated Isolation: By employing an independent transmission channel completely isolated from the public network, this approach physically prevents network attacks or viruses from compromising critical flight data.
- Flexible Evolution: The system architecture is mature and stable, supporting seamless scaling and upgrades for future new services, thereby effectively safeguarding existing investments.
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