What is the estimated annual traffic increase with 5G accounting for more than 80% of the total traffic in 2027 
est reports, Wireless Backhaul Evolution and ABI Research, 5G mobile subscriptions are expected to grow by more than 41% CAGR in the next six years, increasing from 378 million subscribers to 4.2 billion. Traffic is estimated to increase above 6,000 exabytes annually by 2027 with 5G accounting for more than 80% of the total traffic. Thus, higher-capacity backhaul bands, millimeter wave and microwave will be vital in meeting 5G traffic demands.
They will account for more than 55% of the links in 2027. Fiber will be next with only 42%. The need to further densify the network to support 5G will result in additional macro cell and small cells, in particular, being deployed in urban areas to handle the traffic. While fiber will be deployed, not all urban cell sites can be supported by fiber.
Instead, microwave and millimeter wave backhaul links will be used, which are versatile and can handle significant data links. Now 5G comes with diverse use cases and requirements. The growing OpenRAN movement provides new avenues, customization, and flexibility that meets such requirements as it offers interoperability among different video digital control unit solutions from different providers. I believe it's the brightest future of our industry.
OpenRAN has picked up steam across the globe and is causing a massive disruption and dis-aggregation in how networks are architected. Today, it isn't just the greenfield tech but also major market players that turn toward OpenRAN. As the market in general continues to move from analytic approaches to OpenRAN, our best-of-breed, open-network hauling solutions become more and more relevant as they can be seen through our joint project in Brazil with various design wins we are working on. Allow me to elaborate on the Brazil project.
We are participating in TIP 5G OpenRAN trials, which test equipment provides for 5G OpenRAN. It's a joint project TIM Brazil is carrying out with TIP, Telecom Infra Project, and the National Telecommunication Institute. A new-generation, all-outdoor, ultra-high-capacity IP-50E millimeter wave solutions, capable of delivering up to 20 gigabits capacity today, is being trialed. This type of solution is a must for OpenRAN as it provides the connectivity to the radio units.
We are proud to be involved in this project in Brazil's future network deployments, and we see it as an opportunity to prove our technology edge. To meet future 5G and OpenRAN-related technology demands, we are developing a new high-capacity, low-latency system-on-a-chip. It is designed to offer the next stage of fronthaul linking between digital and radio units. And with this solution, we'll be the first ones in the market offering this technology.
We are very excited about this prospect. Ceragon's System on Chip will tape-out as planned for July will support both microwave and millimeter waves. With high bandwidth and low latency, it will support significant expansion of 5G networks in addition to supporting all previous wireless generations. Our existing IP-50E and IP-50C family of products successfully support now 5G deployments.
The new system-on-a-chip will enhance our offering with an increased capacity reaching 100 gigabits per second as well as improved 5G and OpenRAN compatibility. We are innovating on a disruptive market trend as we've always done from 2G all the way to today's 5G. Ceragon has grown so much in the last decade and a half, and it is a global company today. It has been a pleasure serving as the president and CEO of Ceragon for the past 16 years and to lead an incredible progress and the very many accomplishments of the company.
In the beginning of July, I'll be transitioning my responsibility to Ceragon's former deputy CEO and CFO, Doron Arazi. I will continue serving the company as vice chairman of the board for -- of the board. Throughout my time at Ceragon, I've truly been honored to work with so many talented leaders and visionaries, including our incoming CEO, Doron. With that, allow me to briefly pass the mic to him.
Doron?
Doron Arazi -- Chief Executive Officer
Thank you
est reports, Wireless Backhaul Evolution and ABI Research, 5G mobile subscriptions are expected to grow by more than 41% CAGR in the next six years, increasing from 378 million subscribers to 4.2 billion. Traffic is estimated to increase above 6,000 exabytes annually by 2027 with 5G accounting for more than 80% of the total traffic. Thus, higher-capacity backhaul bands, millimeter wave and microwave will be vital in meeting 5G traffic demands.
They will account for more than 55% of the links in 2027. Fiber will be next with only 42%. The need to further densify the network to support 5G will result in additional macro cell and small cells, in particular, being deployed in urban areas to handle the traffic. While fiber will be deployed, not all urban cell sites can be supported by fiber.
Instead, microwave and millimeter wave backhaul links will be used, which are versatile and can handle significant data links. Now 5G comes with diverse use cases and requirements. The growing OpenRAN movement provides new avenues, customization, and flexibility that meets such requirements as it offers interoperability among different video digital control unit solutions from different providers. I believe it's the brightest future of our industry.
OpenRAN has picked up steam across the globe and is causing a massive disruption and dis-aggregation in how networks are architected. Today, it isn't just the greenfield tech but also major market players that turn toward OpenRAN. As the market in general continues to move from analytic approaches to OpenRAN, our best-of-breed, open-network hauling solutions become more and more relevant as they can be seen through our joint project in Brazil with various design wins we are working on. Allow me to elaborate on the Brazil project.
We are participating in TIP 5G OpenRAN trials, which test equipment provides for 5G OpenRAN. It's a joint project TIM Brazil is carrying out with TIP, Telecom Infra Project, and the National Telecommunication Institute. A new-generation, all-outdoor, ultra-high-capacity IP-50E millimeter wave solutions, capable of delivering up to 20 gigabits capacity today, is being trialed. This type of solution is a must for OpenRAN as it provides the connectivity to the radio units.
 We are proud to be involved in this project in Brazil's future network deployments, and we see it as an opportunity to prove our technology edge. To meet future 5G and OpenRAN-related technology demands, we are developing a new high-capacity, low-latency system-on-a-chip. It is designed to offer the next stage of fronthaul linking between digital and radio units. And with this solution, we'll be the first ones in the market offering this technology.
We are very excited about this prospect. Ceragon's System on Chip will tape-out as planned for July will support both microwave and millimeter waves. With high bandwidth and low latency, it will support significant expansion of 5G networks in addition to supporting all previous wireless generations. Our existing IP-50E and IP-50C family of products successfully support now 5G deployments.
The new system-on-a-chip will enhance our offering with an increased capacity reaching 100 gigabits per second as well as improved 5G and OpenRAN compatibility. We are innovating on a disruptive market trend as we've always done from 2G all the way to today's 5G. Ceragon has grown so much in the last decade and a half, and it is a global company today. It has been a pleasure serving as the president and CEO of Ceragon for the past 16 years and to lead an incredible progress and the very many accomplishments of the company.
In the beginning of July, I'll be transitioning my responsibility to Ceragon's former deputy CEO and CFO, Doron Arazi. I will continue serving the company as vice chairman of the board for -- of the board. Throughout my time at Ceragon, I've truly been honored to work with so many talented leaders and visionaries, including our incoming CEO, Doron. With that, allow me to briefly pass the mic to him.
Doron?
Doron Arazi -- Chief Executive Officer
Thank you