Please hold while we process the request.

What is Open RAN?
  • 4G
  • 5G
  • June 10, 2020

What is Open RAN?

A novel method for developing mobile networks called Open RAN (Radio Access Network) is gaining popularity in the telecom sector. Instead of being forced to use proprietary solutions from a single vendor, it is a software-based approach to RAN that enables operators to mix and match equipment from several suppliers. Open RAN, a cutting-edge method of wireless communication, is a crucial component of radio connections that link computers, cellphones, tablets, and other distant devices to various parts of a network.

Open RAN adopts a decoupled design in contrast to conventional RAN systems, which tightly integrate hardware and software. This allows providers to benefit from improved customization, deployment, and upgrade possibilities for their network topologies. This technology, which is integrated into user devices by device makers, effectively controls resources among radio stations to provide for smooth wireless connectivity to telecom networks.

Network operators may overcome hardware and software limitations by utilising Open RAN, allowing for more flexibility and innovation in the field of wireless communication. In order to create a more competitive and flexible wireless ecosystem, providers may choose components from a variety of suppliers thanks to this vendor-neutral and virtualization-friendly approach. Open radio access network (Open RAN) helps providers to overcome the major shortcomings of traditional RAN by decoupling software and hardware.

The technology makes hardware and software components produced by different vendors interact with each other seamlessly over open and interoperable network interfaces.  The multi-vendor approach and openness will contribute immensely towards 5G implementation.  Along with facilitating the implementation of 5G, Open RAN can also be applied to improve the performance of 2G, 3G, and 4G networks.

The leading telecom companies have already started Open RAN testing and trialing.  In 2019, Vodafone became the first telco to trial the Open RAN architecture in the UK.  Likewise, the Telecom Infra Project (TIO) has been expanding its Open RAN trial programs across Africa and Latin America.

According to a recent survey,

68% of the respondents claim they or the wider business is exploring OpenRAN for densification demands, 47% pointed towards greenfield deployments in urban environments, 42% are looking to replace their incumbent suppliers and 5% are seeking validation in the rural areas.

Why is Open RAN Important?

Open RAN is crucial for a number of reasons. It has the ability to spur change and innovation across a wide range of industries, including telecom, and may have a big influence on it. Open RAN is crucial for a number of reasons, including:

1. Increased Competition: By allowing operators to combine and match equipment from many suppliers, it can boost competition in the telecom sector. Large merchants’ influence may be lessened as a result, allowing smaller suppliers to compete more successfully. Higher levels of competition may result in greater innovation, better products, and cheaper pricing.

2. Lowering Costs and Increasing Efficiency: It enables operators to employ general-purpose hardware and software rather than proprietary solutions from a single vendor, which may lower costs and boost efficiency. This can lessen the need for specialised hardware, streamline network administration, and speed up the rollout of new features and services.

3. Innovation Promotion: It can encourage innovation by allowing developers to interact and build upon one another’s work more readily. Additionally, using open-source software may speed up innovation and lower the cost of software development.

4. The Potential to Close the Digital Divide: It might make establishing mobile networks in previously unreached or underserved locations possible. Open RAN can make it simpler for operators to offer mobile services in rural and isolated locations and places with low population densities by lowering costs and boosting flexibility. In general, it has the potential to spur innovation and transformation in the telecom sector and beyond.

It is a topic worth watching in the next years because of its potential influence on competition, prices, innovation, and access to mobile services. We can anticipate greater innovation, lower costs, and improved customer services as more operators and manufacturers adopt Open RAN. Briefly said, Open RAN is a software-based method of constructing mobile networks that enables operators to combine and match hardware made by various suppliers.

It combines virtualization and open source software to boost innovation in the telecom sector and enhance flexibility while lowering costs.

Open RAN vs Traditional RAN

Operators, providers, and customers may all profit from open RAN. These advantages consist of:

1. Vendor Neutrality: Thanks to Open RAN, operators may employ devices from a variety of suppliers, freeing them from being forced to adopt a single vendor’s proprietary solutions. As a result, there may be more competition, lower expenses, and more innovation.

2. Lower prices: By allowing the use of general-purpose hardware and software and eliminating the requirement for specialised hardware and software solutions, it can lower prices. This may result in cheaper equipment expenses, lower maintenance costs, and a quicker rollout of new features and services.

3. Faster Innovation: It encourages speedier innovation by allowing developers to more readily interact and build on one another’s work. Additionally, using open source software may speed up innovation and lower the cost of software development.

4. Greater Flexibility: The implementation of mobile networks is more flexible thanks to Open RAN. Operators can combine and match equipment from many suppliers, allowing them to tailor their networks to their own requirements. Additionally, this may make constructing networks in previously unserved or underserved regions simpler.

5. Enhanced Quality of Service: It enables operators to offer greater capacity and coverage, which can enhance the quality of service. Operators may increase the resilience and redundancy of their networks, resulting in fewer outages and greater service quality, by utilising a variety of equipment from several manufacturers.

6. Future-Proofing: It can help mobile networks become more adaptable when new technologies and standards are adopted as they become available. Open RAN can simplify integrating new technologies and functionalities into current networks by utilising open standards and interfaces. Operators, providers, and customers may all profit greatly from Open RAN.

It is a desirable alternative for organisations intending to develop or update mobile networks due to its capacity to boost competition, reduce costs, foster innovation, and enhance service quality. We may anticipate further advantages and use cases to emerge as Open RAN use increases.

Challenges of Implementing Open RAN

While Open RAN has numerous advantages, there are also a number of difficulties and restrictions that must be overcome. Some of the major difficulties and restrictions with Open RAN include:

1. Interoperability: Open RAN calls for equipment from many suppliers to work together. This might be difficult because various suppliers may utilise different standards, interfaces, and protocols. Interoperability demands meticulous preparation, testing, and collaboration.

2. Complexity: Due to the necessity of integrating equipment from several suppliers, Open RAN might be more complicated than conventional mobile networks. This can raise the possibility of mistakes and delays while also necessitating more network management resources.

3. Security: Because Open RAN calls for the usage of equipment from several suppliers, it creates additional security vulnerabilities. It takes rigorous design, monitoring, and threat mitigation to ensure the security of Open RAN networks. Open standards and interfaces, which are continually developing, are a requirement for Open RAN.

Creating and accepting common standards and interfaces are necessary to guarantee interoperability and compatibility between equipment from various suppliers.

4. Cost: Upfront equipment, testing, and integration costs for it might be high. The initial expenses of Open RAN can prevent its adoption even though they can be reduced in the long run.

5. Performance: Traditional mobile networks could perform better than open RAN in some situations. This may be because of problems with complexity, interoperability, and security. Open RAN networks must be carefully planned, tested, and optimised. Overall, it has several advantages but is also constrained by a number of issues.

Several issues and restrictions must be resolved to support the effective adoption and implementation of Open RAN networks. We may anticipate advancements in these areas as technology and standards continue to advance, which will increase the acceptance and implementation of Open RAN networks.

Future of Open RAN

It is a very young technology that is developing quickly. In the future of Open RAN, we may anticipate the emergence of numerous themes as technology and standards continue to advance. These tendencies include, among others:

1. Increased Adoption: As it’s advantages are more generally understood, we may anticipate seeing the technology used more extensively. Operators seeking to cut costs, expand flexibility, and boost service quality are expected to be the driving force behind this.

2. Standardisation: As it develops further, we may anticipate seeing the technology become more standardised. This will lessen complexity and boost performance by ensuring compatibility across equipment from various suppliers.

3. Integration with 5G: It is anticipated that Open RAN will be essential to the rollout of 5G networks. We may anticipate a rise in the usage of Open RAN as 5G networks proliferate, giving 5G infrastructure deployments more flexibility and efficiency.

4. Expansion into Other Verticals: Although it is primarily targeted at mobile networks, it might also be utilised in other verticals including the Internet of Things (IoT) and business networks. We anticipate seeing more usage in these areas as the technology develops. Overall, Open RAN’s future is promising.

We may anticipate growing acceptance, standardisation, and growth into new sectors as the technology develops and matures. Implementing mobile networks and other communications infrastructure will probably result in more innovation, competitiveness, and efficiency.

What is Open RAN: Understanding Important Aspects of Open Radio Access Network (Open RAN) Technology

Decouples Hardware and Software Components

Open radio access network technology helps telecom companies (telcos) to overcome the major shortcoming of traditional RAN.  The decoupling of the hardware and software components on the network enables telcos to reduce the dependence on proprietary hardware.  They now have the option to customize the telecom network by integrating software and hardware units produced by various vendors.

The decoupling of software and hardware components makes it easier for telcos to manage and upgrade their systems dynamically.

Open RAN 5G

A cutting-edge and developing method for developing and implementing fifth-generation (5G) mobile networks is called open RAN (Radio Access Network). Due to vendor lock-in and poor compatibility, RANs have traditionally been deployed using proprietary hardware and software from a single manufacturer. But with Open RAN, the emphasis is shifted to open standards, virtualization, and network component disaggregation.

The main idea of Open RAN 5G is to provide a more adaptable, impartial to vendors, and economical network architecture. This is accomplished by dividing the RAN’s hardware and software components, allowing operators to combine and match various components from various suppliers. This disaggregation promotes innovation, competition, and enables operators to select the best-in-class solutions for each particular function, eventually improving user experience and network performance.

By using virtualization technologies like Software-Defined Networking (SDN) and Network Functions Virtualization (NFV), it is able to replace existing proprietary hardware with software-based solutions. By using resources more effectively and facilitating network scalability, operators would find it simpler to respond to shifting demand and quickly roll out new services. In addition, it encourages open interfaces and standardisation, enabling various components to operate together without issue independent of the manufacturer, hence minimising integration difficulties.

This strategy also promotes a robust ecosystem of solution providers, from well-known companies to up-and-coming ones, which fosters innovation and lowers costs.

Standardizes Radio Interfaces

Like traditional RAN, Open radio access network architecture emphasizes on standardization of radio interfaces. But the technology aims to standardize the radio interfaces in an open and accessible way. The open standardization will facilitate interoperability between the hardware and software components of telecom networks built by various vendors.  Also, new enterprises can leverage open standards to produce innovative software and hardware components to boost the performance of the telecom network.

Optimizes Networks Using Embedded Intelligence

5G networks will be much more complex than 3G and 4G networks.  The telcos cannot implement, update, and customize 5G networks using traditional RAN technology.  It is developed based on intelligence as the core principle.

The built-in intelligence makes the technology effective in managing complex telecom networks like 5G. The telcos will leverage Open RAN technology to optimize 5G networks without deploying human resources.

Facilitates RAN Virtualization

Many telcos already use virtual radio access networks (vRAN) to set up multiple radio networks based on a single and uniform hardware platform.  At present, vRAN is considered to be extremely important for 5G networks. Open radio access network architecture emphasizes on end-to-end RAN virtualization.

Unlike vRAN, it does not require telcos to depend on proprietary hardware platforms or components. The network virtualization, control plane user plane split, and orchestration enable them to experiment and also intelligently operate the network. Hence, telcos can leverage the architecture to speed up 5G implementation through complete RAN virtualization.

Leads to Development of Energy-Efficient Base Stations

The O-RAN Alliance has already released a reference design for white-box base station hardware. The next-generation hardware supports both remote radio units (RRUs) and baseband units (BBUs).  It further decouples the hardware and software architecture completely using reference platforms.

The engineers and system architect can leverage the white-box base station hardware to build an energy-efficient base station to support complex 5G networks. The reference design will further encourage many existing companies and startups to boost the performance and energy-efficiency of the new generation base stations.

Enables Varied Deployment Scenarios

The telcos can deploy Open radio access network in several ways.  They can adopt a centralized Open radio access network deployment model to reuse the existing infrastructure. Many telcos deploy the architecture in a centralized way to set up a 5G network by upgrading their existing fiber-optic links.

At the same time, the telcos can adopt a distributed Open radio access network deployment model to reduce the cost of delivering connectivity by setting up customized networks.  Many telcos opt for distributed deployment to deploy additional data centers and provide connectivity to additional customers.

Open RAN testing

In order to guarantee the compatibility, speed, and security of the many components within the Open RAN architecture, Open RAN testing is essential. Testing becomes crucial to ensure that different suppliers’ hardware and software components can function flawlessly together in a multi-vendor environment since Open RAN depends on disaggregation and standardisation.

Open RAN testing’s essential components include:

1. Interoperability testing: It confirms that various Open RAN components from various suppliers may work together successfully and adhere to the necessary performance criteria.

2. Conformance testing: Ensuring that all components adhere to guidelines and requirements established by groups like the Telecom Infra Project (TIP) and the O-RAN Alliance.

3. Performance testing: It also known as load testing, stress testing, and latency measurements, is used to assess how well the Open RAN network performs under various scenarios in order to enhance network performance and user experience.

4. Functional Testing: Verifying each component’s operation and incorporation within the Open RAN architecture.

Open RAN Hardware

The physical infrastructure that serves as the basis for the Open RAN design is called Open RAN hardware. Following the concepts of open interfaces and vendor-neutral standards, it consists of the hardware elements needed for radio access, processing, and communication.

Open RAN hardware’s essential features include:

1. White-Box Hardware: It encourages the use of white-box hardware, which is equipment built in accordance with open guidelines and standards. Because white-box hardware is adaptable, operators may deploy a wide range of software solutions from many suppliers.

2. Virtualized Baseband devices (vBBU): It introduces vBBUs, which are virtualized software-based solutions operating on commercial off-the-shelf servers, in place of depending on proprietary baseband devices. Scalability and effective resource utilisation are made possible by this strategy.

3. Remote Radio Units (RRUs): It’s RRUs are built to function independently of the BBU, enabling operators to deploy radio units from different manufacturers and enhance network capacity.

4. Open Interfaces: To guarantee compatibility and interoperability between various hardware components, Open RAN hardware adheres to open interfaces, such as O-RAN’s fronthaul and midhaul interfaces.

5. Handle for Multiple Frequency Bands: Open RAN hardware may handle low-band, mid-band, and high-band frequencies, allowing the deployment of a variety of use cases. The deployment of Open RAN technology is supported by hardware and testing for Open RAN.

If successfully implemented, a more adaptable, economical, and cutting-edge mobile network architecture may be created, enabling operators to provide end customers improved services and connections.

O-RAN Testing

O-RAN testing ensures the interoperability, functionality, and security of Open RAN networks. O-RAN testing plays a pivotal role in ensuring the interoperability, performance, and security of Open RAN networks. To address the complex challenges of testing Open RAN components, including baseband units and radio units, the use of specialized tools like the O-RU Simulator has become crucial.

O-RAN is a critical component of the Open RAN ecosystem. Testing is essential to ensure both adherence to O-RAN Alliance criteria and the integration of various vendor solutions as the industry shifts towards open and disaggregated network architectures.

Among the crucial elements of O-RAN testing are:

a. Conformance Testing: Verifying the proper implementation of open interfaces and standards while making sure that its components adhere to the guidelines established by the O-RAN Alliance.

b. Interoperability Testing: Validating the flawless interoperability of multiple-vendor Open RAN components, such as management software, virtualized baseband units, and remote radio units (RRUs).

c. Performance testing: Analysing the network performance under various conditions in order to maximise network capacity, efficiency, and latency.

d. Functional testing: It involves examining how well each component works individually and how they fit into the larger architecture.

O-RAN testing is essential for maintaining a thriving multi-vendor ecosystem and increasing confidence in the deployment of Open RAN networks. As the Open RAN ecosystem continues to evolve, tools like the O-RU Simulator play a vital role in accelerating innovation, mitigating risks, and realizing the full potential of Open RAN technology.

Open RAN Architecture

The old monolithic approach to the deployment of Radio Access Networks is intended to be broken by the open RAN architecture. It entails decoupling hardware and software, fostering open and standardised interfaces, and enabling multi-vendor systems to coexist peacefully.

Open RAN architecture’s salient characteristics include:

a. Open Interfaces: Open interfaces are used by Open RAN architecture, such as the fronthaul and midhaul interfaces of O-RAN, to enable interoperability across different vendor equipment.

b. Virtualization: To provide flexibility and scalability, the design uses virtualization technologies like Network services Virtualization (NFV) to run network services as software on commercially available hardware.

c. Centralised and Cloud-Based Control: Open RAN enables central administration and cloud-based management of network operations, boosting resource allocation and network optimisation.

d. Disaggregated RAN Components: Open RAN separates RAN components like RRUs and vBBUs, enabling network flexibility by allowing the mixing and matching of components from various manufacturers.

Discover more on the potential of O-RU Simulator


In conclusion, Open RAN is a ground-breaking innovation that overcomes the drawbacks of conventional RAN systems by separating hardware and software components and fostering flexibility, interoperability, and customisation. It provides the path for effective and smooth 5G implementation while also boosting the performance of current networks thanks to its emphasis on open standards, integrated intelligence, RAN virtualization, and energy-efficient base stations.

Simnovus is a significant company that has been at the forefront of fostering innovation and growth among the fast improvements in its technology. Simnovus is a well-known business that specialises in creating cutting-edge tools for network testing and optimisation. Their knowledge of and commitment to the Open RAN ecosystem have made a substantial impact on the development and use of this ground-breaking technology.

Simnovus enables telecom operators to effectively test, build, and optimise Open RAN networks with their cutting-edge technologies and solutions, assuring top-tier performance and dependability. Simnovus continues to be a key player in determining the direction of wireless communication as the telecoms sector embraces the transformative power of Open RAN. Their dedication to providing quality and advancing the technology positions them as a significant participant in revolutionising how we connect and communicate in a fast changing digital environment.

Frequently Asked Questions (FAQ’s)

Q1: What is Open RAN?
A1: The Open Radio Access Network, often known as Open RAN, is a cutting-edge method of building mobile network infrastructure that encourages vendor-neutral solutions and interoperability. In order to construct flexible and affordable networks, it intends to decouple hardware and software components, enabling network operators to mix and match equipment from various suppliers.

Q2: What distinguishes Open RAN from conventional RAN architectures?
A2: Traditional RAN designs are frequently built on closed, proprietary systems, which restricts vendor and interoperability options. On the other side, Open RAN supports open standards and interfaces, allowing for multi-vendor deployments and promoting competition, innovation, and cost savings in the mobile network sector.

Q3: What advantages does Open RAN offer?
A3: It has a number of advantages. It boosts vendor competition, which results in reduced prices and quicker innovation. Additionally, it gives network operators the freedom to expand and change their networks more easily, as well as more quickly roll out new services and technologies. It fosters the establishment of sustainable, interoperable, and future-proof mobile networks and encourages a more varied environment.