A few days ago, during the 17th Huawei Global Analyst Conference, Huawei held a press conference on the F5G Global Industry Joint Initiative. During this period. Wei Leping, executive deputy director of the Communications Technology Committee of the Ministry of Industry and Information Technology and director of the China Telecom Technology Committee, said that the optical fiber network has entered the fifth generation, and the upgrade of each generation of optical network means a new system and spectrum.

As we all know, the 40-year development process of the optical fiber network industry has achieved brilliant results, but the development of the entire industry still has the problem of fragmentation of the industrial ecology. There are still many standards organizations in the development of the optical fiber network industry, including ITU, IEEE, BBF, OIF, etc. There is a lack of synergy between various organizations, the coexistence of multiple media, the unclear evolution of the industry between generations, and the decentralized investment, making it difficult to form a scale effect.

In this regard, Wei Leping said that in order to support the widespread deployment of new technologies and applications such as 5G and push the fiber network to all possible ubiquitous application scenarios, the telecommunications industry must build a unified definition around the new generation fiber network F5G, Unified architecture functions, unified capacity, unified performance of a new generation of optical fiber network, to reduce unnecessary fragmentation of private specifications, and obtain the same economies of scale as cellular systems.

Wei Leping believes that in the development of F5G, optical transmission network, optical access network and customer premises network are the three basic application scenarios of F5G. The most urgently defined unified standards are the first two areas.

In terms of optical transmission network, according to Wei Leping, from the perspective of the development history of each generation of optical transmission network, it basically maintains the development law of every decade. At the same time, the rate of the new generation is 10 times higher than the previous generation, and the cost per bit reduced by 10 times. The first generation optical transmission network was born in the 1980s, represented by analog and data systems. At that time, there was no international standard definition. It was not until the third generation optical transmission network that there was an international standard definition. By 2020, the fifth-generation optical transmission network will appear. The typical system is represented by ROADM/OXC, and the standard still needs to be defined.

In terms of optical access network, it also continues the development law of every decade. At the same time, the speed of the new generation is 5-10 times higher than the previous generation, and the cost is 1/5-1/10 of the previous generation. The first generation of optical access networks appeared in the 1980s, and the system was DLC (Digital Loop Carrier), capable of supporting more than 100 voice lines. For the optical access network, it was not until the fourth generation, that is, after 2010, there was an international standard definition. For the fifth-generation optical fiber access network in 2020, the system is represented by EPON/GPON, and the rate can reach 10G-50G, and the standard is yet to be defined.

For Customer Premises Networks(CPN), Wei Leping said that CPN is unique in that it is a private network that is used by customers; it is also an open and diversified market. The number of media and terminals are completely different; in addition, diverse technologies will coexist for a long time.

In Wei Leping’s view, the current standardization of CPN is very slow, and the demand is low. At present, only WiFi has been well defined by IEEE/WFA. Therefore, for the CPN field, Wi-Fi should be the first to define intergenerational standards.