The Broadband Forum, NTT to transform operators’ PON networks
The Broadband Forum, in partnership with NTT, is working on an innovative project to standardize the virtualization of operators’ PON networks to support the delivery of Time Critical Applications (TCAs), such as 5G fronthaul. The project, which was initiated by Forum member NTT, looks to open up new business opportunities for operators and vendors by using network virtualization technologies such as Network Functions Virtualization (NFV) and Software Defined Networking (SDN) to cost-effectively upgrade their PON networks to enable the rapid introduction of new services.
This includes the key issue of fronthaul for 5G services, adding to the Forum’s ongoing work on the convergence of fixed and mobile networks. “As users’ usage changes, both in regard to the different services required and the amount of data coursing through fiber networks, operators need to update their PON networks, including by adding TCAs,” said Akihiro Otaka, executive manager at NTT Access Network Service Systems Laboratories. “This used to require the remake of PON equipment for each service, but should be done via a software upgrade in the near future to improve cost-effectiveness.” The project – PON Abstraction Interface for TCAs – looks at how SDN and NFV can be applied to Optical Line Terminals to disaggregate PON functions to functional modules with open interfaces.
The first phase will define the disaggregation policy and functional requirements of interfaces to disaggregate PON functions which need time-critical processing, while the second phase will define the detailed specifications of the interfaces as Application Programming Interface (API) sets. The project has already attracted a number of new members to the Forum, as the industry becomes more focused on how the fixed network can help deliver 5G. “Delivering new services efficiently and cost-effectively is a priority for the whole industry and this project will play a key role in realizing this objective,” said Arief Mustain, executive general manager at Telkom Indonesia, one of the new members involved in the project. “This is particularly true as the industry moves towards 5G and standardization will play a big part in making this new mobile technology a success.”