Dish, in collaboration with Samsung and Qualcomm, has demonstrated simultaneous 5G 2x uplink and 4x downlink carrier aggregation (CA) over FDD spectrum, marking a major technical milestone for FDD-based 5G networks.
Using just 35 MHz of 5G spectrum, the partners achieved an uplink peak speed of 200 Mbps. On the downlink, Dish’s 5G network reached peak speeds of 1.3 Gbps while utilising only 75 MHz of 5G spectrum across FDD bands n71, n70 and n66. These results underline how efficient carrier aggregation can significantly boost both upload and download capacity on existing FDD spectrum resources.
These world-first demonstrations were enabled by Dish’s cloud-native Open RAN 5G architecture, which supports virtualised radio access functions and flexible spectrum use. Open RAN’s programmability and multi-vendor interoperability played a central role in bringing together the radio, vRAN and modem technologies needed to realise simultaneous multi-carrier aggregation on FDD bands.
Demand for uplink capacity has surged—up by roughly 300 percent—driven by growth in uplink-heavy activities such as social media uploads, video conferencing and other user-generated content. Improving uplink speeds is therefore a critical network priority, and this successful implementation of 2x uplink CA for FDD spectrum directly addresses that need.
For consumers, this technical progress translates into a meaningful improvement in user experience. Boost Mobile and Boost Infinite subscribers on Dish’s network can expect faster uploads and downloads, lower latency for interactive applications and improved reliability when multiple uplink-heavy services are running simultaneously.
Eben Albertyn, EVP and CTO at Dish, said: “By successfully delivering 5G 2x uplink and 4x downlink carrier aggregation for FDD spectrum, Dish is now poised to deliver a better customer experience across our 5G standalone network.” Albertyn also noted that Dish’s Open RAN-based 5G coverage now reaches more than 73 percent of the US population with 5G broadband coverage and provides 5G voice service to over 100 million Americans.
The demonstrations combined extensive lab testing and real-world trials using a mobile phone form-factor test device powered by Qualcomm’s Snapdragon X75 5G Modem-RF System and Samsung’s 5G vRAN solution, along with dual- and tri-band radios deployed across Dish’s live 5G footprint. This integrated approach validated performance across both controlled and commercial environments, reinforcing the readiness of carrier aggregation capabilities for broader deployment.
Mark Louison, Executive VP and GM of Networks Business at Samsung Electronics America, commented: “It’s been a pleasure to work closely with Dish Wireless and support their expanding cloud-native Open RAN virtualised network as 5G services are now live across several markets, clearing the path for even lower latency and faster speeds. We are committed to pushing the boundaries to advance network capabilities to meet growing consumer demands.”
Sunil Patil, VP of Product Management at Qualcomm, added: “We look forward to continued collaborative efforts with industry partners such as Dish and Samsung to enable faster 5G around the world. As consumer demand increases for uplink-heavy applications, carrier aggregation on FDD spectrum is crucial to bring faster upload speeds to more consumers across markets and networks.”
This advancement highlights how carriers can squeeze greater performance from existing FDD holdings while preparing the network for more demanding applications. By combining modern modem technology, virtualised RAN and multi-band radios, operators can now offer faster, more consistent experiences for both uplink and downlink traffic without requiring large swaths of additional mid-band spectrum.
For end users, the practical benefits include quicker file and video uploads, smoother cloud collaboration sessions, improved quality for real-time streaming and video calls, and faster content sharing on social platforms. Enterprises and service providers will also benefit from enhanced mobile broadband capacity that supports increasingly interactive workflows and remote collaboration tools.
Dish’s demonstration is a strong example of how Open RAN architectures can accelerate feature innovation and vendor collaboration. By decoupling hardware and software elements and enabling cloud-native operations, Open RAN allows faster integration of new capabilities such as expanded carrier aggregation and advanced spectrum management techniques.
As 5G adoption continues to grow and user behaviour shifts toward more uplink-centric applications, the ability to aggregate multiple carriers in FDD bands will become increasingly important. This milestone is a step forward in delivering those capabilities at scale, helping to close the gap between evolving user demands and network performance.
Looking ahead, continued collaboration between operators, infrastructure vendors and chipset manufacturers will be essential to expanding these capabilities across more devices and wider geographic areas. The recent results from Dish, Samsung and Qualcomm demonstrate that such collaboration can yield measurable improvements in real-world network performance, benefiting consumers and enterprises alike.
See also: GSMA: Smartphone ownership surpasses 50% yet digital divide persists
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