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Open RAN

Open RAN is the Open Radio Access Network technology that allows for the creation of next generation mobile networks, increasing the performance and flexibility of the services offered.

This is one of the most important developments in the mobile access network, which is currently being worked on internationally.
Thanks to the development of Open RAN solutions, new standards are being defined that make the development of antennas and radio access network hardware and software components independent, so that different industrial players can offer solutions that are interoperable with those of other operators. This fosters the growth of a broader and more diverse industrial ecosystem and opens the door to start-ups and other innovators, reducing the time it takes to develop new services for customers and businesses.

This initiative is promoted and led by the Open RAN Alliance, the international group which has been bringing some of the leading telecommunications operators, including TIM, together since February 2018. The aim is to develop mobile infrastructures with open interfaces, thus facilitating collaboration between different actors.

Among the technologies at the heart of this evolution is 5G, which, together with the Cloud and Edge Computing, will make the widespread dissemination of increasingly secure and advanced digital services for people, businesses and the public administration possible. This includes services linked to new solutions for Industry 4.0, smart cities and autonomous driving.

Open RAN Alliance: documents shared to date

Technical Priority Documents – June 2024

The Open RAN Technical Priorities Release 4 is an update of the documents published in June 2021 (Release 1), March 2022 (Release 2) and April 2023 (Release 3) respectively. It is the result of the work carried out under the MoU on Open RAN signed by Deutsche Telekom AG, Orange S.A., Telefónica S.A., TIM S.p.A. and Vodafone Group Plc.

Each release has prioritised different aspects of Open RAN development. Release 1 focused on the main scenarios and technical requirements for each of the building blocks of a multi-vendor RAN. Release 2 mainly focused on intelligence, orchestration, transport and cloud infrastructure, addressing also the energy efficiency goals and targets to support sustainable Open RAN. And Release 3 mainly focused on developing requirements on SMO and RIC building blocks and to enhance other areas such as Cloud infrastructure, O-CU/O-DU and O-RU, addressing also the security topic to support more secure Open RAN.

The fourth release of the technical priorities has primarily focused on developing further requirements on SMO especially related to AI/ML framework, interworking with traditional RAN and slicing management and on Security with MoU operator vision about the zero trust approach and requirements for certification and also on Cloud infrastructure mainly focused on O2 and Acceleration Abstraction Layer, while other areas have been significantly enhanced such as RAN software, O-RU and O-CU/DU. Moreover, this new release focuses in more detail on the RAN hardware acceleration topic and various challenges related to both the look-aside and in-line acceleration card models.  In particular, the RAN HW acceleration requirements are now contained within a dedicated section of the MoU Technical Priorities document. 

The Technical Priorities are those that the signatories consider priorities for Open RAN solutions. The technical priorities serve as guidance to the RAN supplier industry on where they can focus to accelerate market deployments in Europe, focusing on commercial product availability in the short term, and solution development in the medium term. The 5 operators also intend for these priorities to act as an input into TIP’s OpenRAN Release Framework. The Technical Priorities do not represent any alignment on procurement / product selection processes of individual signatories.

The overall objective is to promote a fast pace for the development of competitive Open RAN solutions in Europe, across other regions and ultimately accelerate the global adoption of the technology. The Open RAN MoU Group technical priorities will evolve over time following the progress of Open RAN standardisation, in the respective standardization bodies, and the market development of Open RAN solutions.


Open RAN MoU Zero Trust Approach commitment (Release 4)

Open RAN MoU tech priorities notes (Release 4)

Open RAN MoU Security Certification requirements (Release 4)

Open RAN Technical Priority Document (Release 4)

Technical Priority Documents – April 2023

Open RAN Technical Priorities Release 3 is an update of the documents published in June 2021 (Release 1) and March 2022 (Release 2) respectively. It is the result of the work carried out under the MoU on Open RAN signed by Deutsche Telekom AG, Orange S.A., Telefónica S.A., TIM S.p.A. and Vodafone Group Plc.

While Release 1 focused on the main scenarios and technical requirements for each of the building blocks of a multi-vendor RAN, Release 2 mainly focused on intelligence, orchestration, transport and cloud infrastructure, addressing also the energy efficiency goals and targets to support sustainable Open RAN.

This Release 3 has primarily focused on developing further requirements on SMO and RIC while other areas have been significantly enhanced such as Cloud Infrastructure, O-CU/O-DU and O-RU. Moreover, this new release focuses in more detail on security topics and various challenges introduced by the disaggregation promoted by the O-RAN architecture. In particular, the security requirements are now contained within a dedicated section of the MoU Technical Priorities document. Energy efficiency (EE) topics were also analyzed in more detail, with new requirements identified in various streams, for example, Cloud Infrastructure, O-CU/O-DU, RIC use cases and RAN features.

The Technical Priorities are those that the signatories consider priorities for Open RAN solutions. The technical priorities (i) serve as guidance to the RAN supplier industry on where they can focus to accelerate market deployments in Europe, focusing on commercial product availability in the short term, and solution development in the medium term, and (ii) are intended to act as an input into TIP’s OpenRAN Release Framework, which can then be developed with the industry at large to create requirements that can potentially be used as the basis for certification, promoting an efficient supply chain. The Technical Priorities do not represent any alignment on procurement / product selection processes of individual signatories.

The overall objective is to promote a fast pace for the development of competitive Open RAN solutions in Europe, across other regions and ultimately accelerate the global adoption of the technology. The Open RAN MoU Group technical priorities, as with any industry-driven requirements developed through TIP, will evolve over time following the progress of Open RAN standardization, in the respective standardization bodies, and market development of Open RAN solutions.
 

OPEN RAN Technical Priorities - Focus on Security
Notes on the OPEN RAN MOU Technical Priorities (Release 3)
Open RAN Technical Priority Document

Technical Priority Documents – March 2022

This Open RAN Technical Priorities Release 2 is an update of the document published in June 2021. It is the result of the work carried out under the MoU on Open RAN signed by Deutsche Telekom AG, Orange S.A., Telefónica S.A., TIM S.p.A. and Vodafone Group Plc.

Release 1 focused on the main scenarios and technical requirements for each of the building blocks of a multi-vendor RAN. Release 2 builds on those requirements and focuses on intelligence, orchestration, transport and cloud infrastructure, with the aim of promoting a fully automated and interoperable Open RAN system.

The energy efficiency goals and targets to support sustainable Open RAN deployments have also been addressed. It is expected that Open RAN networks will gradually become more energy efficient than traditional RAN, benefiting from Open RAN concepts such as cloudification, disaggregation and native AI.

The overall objective is to promote a fast pace for the development of competitive Open RAN solutions in Europe, across other regions and ultimately accelerate the global adoption of the technology. These requirements will evolve over time following the progress of Open RAN standardisation and market development of Open RAN solutions.

Open RAN Technical Priorities (Release 2)

Notes OPEN RAN TECHNICAL PRIORITIES - Focus on Energy Efficiency

Notes on the Open RAN Technical Priorities (Release 2)

Security White Paper – March 2022

The ‘Open RAN Security White Paper’ is the result of the work carried out by the security experts of Deutsche Telekom AG, Orange S.A., Telefónica S.A., TIM S.p.A. and Vodafone Group Plc being the signatories of the Open RAN MoU.

This document starts with an introduction of the MoU framework, and the O-RAN Alliance organisation and its activities. It focuses on all security aspects within Open RAN technology, describing the risk-based threat modeling and remediation analysis conducted within the O-RAN Alliance for building an effective Open RAN security architecture.

In addition, it provides details on the Open RAN Security Focus Group (SFG) activities, which focuses on developing the four security specifications that are the pillars of the Open RAN security architecture. These include threat modeling, security requirements, protocols and tests. 

Open RAN Security White Paper

Near Real Time Radio Intelligent Controller – November 2021

During the Open RAN Plugfest 2021, held in November in the TIM Innovation lab in Turin, TIM developed the Near RT RIC in collaboration with Keysight.

It is a software platform that collects network data in real time so that they can be analysed by various applications: then Machine Learning techniques are used to find possible problems and identify improvements in the functioning of the 4G / 5G network.

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Open RAN Technical Priorities - Executive Summary

As a result of the work carried out under the MoU on Open RAN signed by Deutsche Telekom AG, Orange S.A., Telefónica S.A., TIM and Vodafone Group Plc we are publishing the executive summary of the Open RAN Technical Priorities with a list of requirements to guide and foster a competitive open RAN ecosystem, promoting openness and flexibility.

The overall objective is to ensure a fast pace for the development of open and virtualized RAN solutions while ensuring they reach parity with best-in-class traditional RAN solutions, and support a timely roll-out of open RAN networks in Europe.

The comprehensive list of Open RAN technical priorities will be published shortly.
 

Download and consult the document

Open RAN Technical Priority Document, by the Open RAN MoU signatories - June 2021

The “Open RAN Technical Priorities Document” is the result of the work carried out under the MoU on Open RAN signed by Deutsche Telekom AG, Orange S.A., Telefónica S.A., TIM and Vodafone Group Plc. This document offers a comprehensive list of technical requirements that the signatories of the Open RAN MoU consider priorities for Open RAN architecture to guide and foster a competitive open RAN ecosystem, promoting openness and flexibility. It includes the main scenarios and radio configurations targeted for operators’ deployment, providing hardware and software requirements for each of the building blocks of a disaggregated RAN. The overall system relies on open interfaces to allow multi-vendor deployment in a fully interoperable manner, and intelligent radio controllers and orchestration in a cloud-native environment to unleash the potential of a fully automated network. The overall objective is to promote a fast pace for the development of open, virtualized and programmable RAN solutions, and support a timely roll-out of open RAN networks in Europe. 
 

Download and consult the document

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