T-Mobile Sets 5G Uplink Speed Record with 550 Mbps Milestone

In a live demonstration at a commercial site in Seattle, T-Mobile achieved a record-breaking 550 Mbps uplink speed using sub-6 GHz spectrum. This feat was accomplished through the implementation of 3GPP Release 17 UL Tx Switching, a technology that enhances uplink performance by optimizing the use of UL Carrier Aggregation and UL MIMO across TDD and FDD spectrum.

The demonstration was a collaborative effort between T-Mobile, Nokia, and MediaTek. Utilizing 100 MHz of TDD spectrum (n41) and 35 MHz of FDD spectrum (n25), the test employed a MediaTek flagship test device equipped with an integrated M90 modem. This partnership highlights the importance of cross-industry collaboration in advancing 5G technology.

This achievement underscores the growing importance of uplink speeds in supporting emerging applications such as 4K video uploads, real-time gaming, virtual reality (VR), and augmented reality (AR). As demand for these data-intensive applications increases, T-Mobile's advancements position it at the forefront of delivering enhanced user experiences.