Broadband Forum Motivates 5G Transport Network Architecture and Requirements

5G requires a highly scalable and future oriented network architecture — including intelligent, coordinated, automation of the RAN, mobile core, and transport networks — to enable deployment and operation of new revenue generating services, the company said.

This will be realized by the transport architecture being developed which will provide the necessary standard interfaces, requirements, and modeling to realize this automation.

This is the message set out in a new white paper published by Broadband Forum. The document outlines the new transport architecture the Forum is developing and sets out the motivation and benefits for operators to upgrade their transport networks and ensure their legacy backhaul infrastructure meets a new suite of demands to ensure superior RAN performance and maintain low total cost of ownership for 5G.

The white paper, titled “5G Network Architecture Overview,” explains that the new complexities of 5G networks require intelligent, automated coordination between RAN, mobile core networks and the underlying transport network to meet the demands of 5G. Legacy transport systems need to be upgraded and backhaul systems must meet a suite of new demands to ensure superior RAN performance and maintain low total cost of ownership.

5G backhaul systems need to address increased capacity and greater interface density requirements. For example, 5G backhaul baseband interfaces will need 10 Gbps capacity and need to scale efficiently up to 100Gbps.

According to Broadband Forum, to meet this demand, the transport network needs to evolve to enable operators to provide the needed capabilities for 5G in a practical and effective manner. For this, the transport network will need to leverage the numerous technology developments that have occurred since the rollout of LTE.

Broadband Forum is the communications industry´s open standards development organization focused on accelerating broadband innovation, standards, and ecosystem development. For more information about the Broadband Forum, go to