New-generation industrial-grade PON technology research and development work enters the fast lane

At the "2018 China Optical Network Seminar" held recently, Ao Li, Institute of Technology and Standards, China Academy of Information and Communications Technology introduced the current hot spots of broadband access development. He said that the standardization of single-wave 50G PON technology has started, and the development of new-generation industrial-grade PON technology standards has entered the fast lane. However, ITU-T and IEEE still have differences in the choice of the next-generation industrial-grade PON technology route, and it is still difficult to reach a consensus in a short time.

The first is WDW-PON, which can significantly reduce the consumption of optical cable resources and reduce the cost of 5G fronthaul network construction. WDW-PON has obvious application 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 industrial-grade PON network slicing can realize a unified optical network to carry multiple services. The advantages are mainly reflected in three aspects. First of all, unified bearing, high efficiency and energy saving. A physical OLT is divided into different virtual OLTs to reduce the coupling between departments and data, improve efficiency and reduce computer room occupancy and energy consumption. Second, resources are isolated, and the dedicated line experience is guaranteed. Different vANs exclusively share forwarding and control resources without interfering with each other, ensuring forwarding security and high reliability of dedicated line services. Third, domain management, easy maintenance. Different vANs are divided into powers and domains, and managed by different teams. The coupling with other vANs is reduced, and positioning is faster and more accurate.

At the same time, industrial-grade PON can help the interconnection of smart manufacturing industries. Industrial-grade PON can achieve standard industrial protocol compatibility, protocol conversion, data collection, remote data access, secure access and other functions, helping manufacturers quickly build a flat neural network for Industry 4.0. At the same time, the passive all-fiber flat network architecture is in line with the development direction of the industrial interconnection cloud architecture. Converge all services of data, serial port, voice, and video to meet the full-service needs of intelligent manufacturing. Anti-strong electromagnetic interference, anti-strong vibration, wide height and low temperature, meet the requirements of various industrial manufacturing complex environments. In addition, it supports hand-in-hand networking architecture, as well as key board redundancy backup, data encryption transmission, anti-attack protection and other measures to implement industrial-grade security protection.