At the "2018 China Optical Network Seminar" held recently, Ao Li, the Institute of Technology and Standards of the China Academy of Information and Communications Technology, introduced the current hotspots in broadband access development. He said that the standardization of single-wave 50G PON technology has started, and the research and development of new-generation PON technology standards has entered the fast lane. However, ITU-T and IEEE still have differences on the next-generation PON technology route selection, and it is still difficult to reach consensus in a short time.
Ao Li made a detailed introduction to the current hotspot of broadband access development. The first is WDW-PON, which can significantly reduce the consumption of optical cable resources and reduce the construction cost of 5G fronthaul networks. The WDW-PON application has obvious advantages, large bandwidth, supports 10G and 25G rates per channel, and can meet the large bandwidth requirements of 5G fronthaul signals. Using point-to-multipoint technology can save a lot of backbone fiber resources.
The PON network slicing can realize an optical network to carry multiple services uniformly. The advantages are mainly reflected in three aspects. First, unified bearing, high efficiency and energy saving. An entity OLT is divided into different virtual OLTs, which reduces the coupling of departments and data, improves efficiency, and reduces machine room occupancy and energy consumption. Second, resources are isolated and the dedicated line experience is guaranteed. Different vANs have exclusive forwarding and control resources, without interfering with each other, ensuring forwarding security and high reliability of dedicated line services. Third, it is divided into domains for easy maintenance. Different vANs are decentralized and managed by different teams, and coupling with other vANs is reduced, positioning is faster and more accurate.
At the same time, industrial PON can help intelligent manufacturing industrial interconnection. Industrial PON can achieve standard industrial protocol compatibility, protocol conversion, data collection, remote data access, secure access and other functions, helping manufacturing companies quickly build Industry 4.0 flattened neural networks. At the same time, the passive all-fiber flat network architecture conforms to the development direction of the industrial interconnected cloud architecture. Integrate all services of data, serial port, voice and video to meet the needs of intelligent manufacturing. Resistant to strong electromagnetic interference, resistant to strong vibration, wide, high and low temperature, to meet the requirements of various industrial manufacturing complex environments. In addition, it supports hand-in-hand networking architecture, key board redundancy backup, data encryption transmission, anti-attack protection and other measures to implement industrial-grade security protection.
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