Technologies & Innovation

What Is 5G VoNR | Unveiling the Future of Wireless Communication
Alex Fridman
3 minutes

5G VoNR Explained


Today's world is almost unimaginable without wireless communication. A few years ago, our mobile phones could send text messages or make calls. Fast forward to today, we stream videos, make video calls, and operate smart devices, all in real-time. The rapid evolution of cellular technology has made this possible. As we stand on the brink of a new era of wireless communication, with the advent of 5G, it is worth exploring one of its most transformative features: 5G Voice over New Radio (VoNR).


What is VoNR?


5G or fifth-generation technology promises to revolutionize our digital experiences, boosting speeds up to 100 times faster than 4G, lower latency, and capacity to connect a multitude of devices simultaneously. But what about voice calls, which despite all the advancements, remain fundamental to our communication? Enter 5G VoNR.


VoNR, or Voice over New Radio, is a protocol that allows voice calls to be made over the 5G network, using the same radio access technology that the 5G data network uses. It can be thought of as the 5G equivalent to VoLTE (Voice over Long Term Evolution), which provided similar functionality for the 4G network.

How Does VoNR Work?



Unlike previous cellular generations, 5G does not initially support native voice calls. Earlier, the data was transmitted over 4G networks. But voice calls were still handled by the legacy 2G/3G networks using a technology called Circuit Switched FallBack (CSFB). Yet, this approach had its drawbacks in quality and efficiency.


5G initially followed a similar pattern, using a technology called EPS Fallback (EPSFB) to handle voice calls. However, this method still relies on the older LTE networks, therefore, to fully realize the potential of 5G, a new method for handling voice calls was needed. This is where VoNR comes in.


VoNR carries voice traffic over the 5G network, offering enhanced call quality, better reliability, and improved efficiency. By leveraging the benefits of 5G such as ultra-low latency and high data speeds, VoNR can offer richer and more interactive communication experiences.


Advantages of VoNR


5G VoNR comes with a slew of advantages over its predecessors, thanks to the robust characteristics of 5G technology.


  • Superior Voice Quality: With 5G's high data rates and low latency, VoNR can deliver high-definition (HD) voice calls, making conversations crisp and clear.


  • Improved Efficiency: By eliminating the need to fall back to older networks, VoNR allows for more efficient use of the network's resources.


  • Rich Communication Services (RCS): 5G VoNR can support RCS, enabling features such as video calling, file sharing, and real-time language translation, all integrated into the calling experience.


  • Faster Call Setup Times: VoNR can significantly reduce call setup times, making communication quicker and more seamless.


VoNR and the Internet of Things (IoT)


Enhanced voice call quality is often the most lauded feature of VoNR. But its potential in IoT is exciting.  5G's ability to handle a vast number of connections simultaneously, coupled with VoNR's efficient use of network resources, opens up a world of opportunities for connected devices.


Think of smart homes, for instance. Imagine being able to communicate with all of your home appliances and security systems via voice command, with instantaneous response times. That's the level of interconnectivity that VoNR can help achieve. On a larger scale, in smart cities, VoNR could enable real-time communication between traffic systems, utilities, and emergency services, facilitating a new era of efficiency and responsiveness.


The Future of VoNR


As exciting as it sounds, the journey to VoNR is not without its challenges. First, the global rollout of 5G networks is still ongoing, and until 5G coverage is ubiquitous, fallback to older networks will be necessary. Second, both network infrastructure and devices need to support VoNR, requiring significant investment and development from operators and manufacturers.


Despite these hurdles, the adoption of VoNR is inevitable as the benefits it offers are too substantial to ignore. As 5G networks continue to evolve and mature, we can expect VoNR to become a standard feature in our devices, bringing us one step closer to a fully connected world.


The Path to Global VoNR Implementation


Achieving global implementation of VoNR will be no small feat, given the necessary upgrades to both network infrastructure and devices. Telecommunication companies will need to invest heavily in upgrading their existing networks, ensuring that they are VoNR-compatible.


Additionally, handset manufacturers will also need to ensure their devices are equipped to handle VoNR. This requires incorporating new hardware and software capabilities, which could initially increase the cost of devices.


Nevertheless, we are already seeing promising signs. Several major network providers and device manufacturers have begun testing VoNR capabilities and are planning to launch VoNR-compatible networks and devices. For instance, companies like Ericsson, Huawei, and Nokia have all demonstrated VoNR calls, indicating that the industry is well on its way towards wider implementation.




5G VoNR is poised to take wireless communication to the next level. From high-definition voice calls to enabling communication between IoT devices, the potential applications are both wide and transformative.

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