IN Brief:
- MediaTek and Samsung have completed a 3Tx five-layer 5G uplink demonstration.
- The test achieved 670Mbps using n66 and dual n77 carriers.
- The work strengthens uplink options for fixed wireless access, cloud applications, industrial gateways, and data-intensive connected systems.
MediaTek and Samsung have completed a 3Tx five-layer 5G uplink demonstration, reaching 670Mbps using MediaTek’s M90 5G modem platform and Samsung network technology.
The test combined three-transmit-antenna operation with a five-layer uplink configuration. It used n66 at 1.7GHz as the primary cell with 30MHz of bandwidth, alongside dual n77 carriers at 3.7GHz using 200MHz in total. Samsung’s side of the demonstration included virtualised RAN, Massive MIMO radios, and macro radios.
By adding a multi-band, multi-layer configuration to previous 3Tx work, the companies increased peak uplink throughput and spectrum efficiency. The configuration is aimed at applications where devices generate large volumes of data at the network edge, including fixed wireless access, cloud-connected equipment, industrial gateways, remote monitoring, and high-resolution video upload.
Uplink performance is becoming more important as connected systems shift from consuming content to producing operational data. Inspection cameras, field devices, private-network equipment, mobile routers, and edge AI systems can all generate data that has to move upstream quickly and reliably. In those environments, the uplink is often the limiting path when several devices transmit video, telemetry, diagnostics, or sensor data at the same time.
Fixed wireless access is a clear near-term beneficiary. A 5G FWA device may serve homes, businesses, industrial buildings, or temporary sites where fibre is unavailable, slow to deploy, or uneconomic. Higher uplink performance improves cloud backup, remote work, surveillance, site monitoring, and multi-user traffic. It also gives network operators more room to support enterprise use cases where upload speed and connection stability are commercially relevant.
The engineering interest sits in the interaction between modem capability, antenna configuration, radio infrastructure, and RAN software. Higher uplink rates are not achieved simply by adding bandwidth. Device RF design, antenna placement, thermal behaviour, transmit power, scheduling, MIMO operation, interference management, and network resource allocation all affect whether lab performance can be carried into deployed equipment.
Wireless design is spreading across a wider range of capability classes. Nordic Semiconductor’s nRF54L15 Tag sits at the low-power end of that spectrum, combining Bluetooth Channel Sounding, sensing, edge AI, Matter, and battery operation in a compact prototyping platform. MediaTek and Samsung’s uplink work sits at the high-throughput end, where antenna and network architecture become central to product performance.
That spread of requirements is widening the design burden. A coin-cell tag, a RedCap sensor, an industrial router, a private 5G gateway, and a high-throughput FWA unit all carry different constraints around bandwidth, latency, power, antenna design, certification, thermal behaviour, and software support. Network and modem suppliers are increasingly expected to provide more defined capability classes rather than one broad 5G message.
MediaTek’s M90 demonstration extends the modem platform into non-handset applications, including fixed wireless and connected infrastructure. Samsung’s use of vRAN and radio assets highlights the role of software-defined network architecture in supporting advanced uplink configurations. The next proving ground will be equipment operating under real RF conditions, where device thermals, antenna constraints, interference, and network loading are less forgiving than a controlled test environment.
