Ericsson and MediaTek achieve mmWave uplink record

Ericsson and MediaTek performed four component carrier uplink (4CC) aggregation over millimeter wave (mmWave) which resulted in a peak throughput of 495 Mbps – 425 Mbps in New Radio (NR) plus 70 Mbps in LTE. The demo made in June used pre-commercial software on a device containing a MediaTek M80 5G chipset. The lab test used the Ericsson RAN Compute 6648 baseband with the AIR 5331 millimeter wave radio.

The test, which focused on uplink carrier aggregation, is the first of its kind. He showed how this solution can help communications service providers deliver higher data rates and capacity for uplink applications such as user initiated streaming (AR / VR) and content creation. . Fast uplink performance means the user or subscriber does not have to worry about weak signals when video conferencing on phones, for example.

Downlink or download speed has long dominated what we use the internet for, from browsing to streaming. The Covid-19 pandemic has prompted many people across the world to work or study from home, stressing the importance of uplink or download speed performance.

Download speed determines how quickly data is sent from the computer or portable device to the Internet. This includes uploading files, such as photos and videos to social media or collaborative work sites. Download speeds are also crucial for the picture and sound quality of the video conference. A strong uplink means less or even none of those frozen screens, or broken audio, when using apps like Skype or Microsoft Teams. Likewise, a faster uplink improves voice over Internet Protocol (VoIP) calls and the online gaming experience.

Hannes Ekström, 5G RAN Product Line Manager at Ericsson, says: “We continue to build on our previous successes, breaking our own download speed record. With a peak throughput of almost 500 Mbps, we demonstrated in this final step with MediaTek how unprecedented data speeds can be provided in the uplink using mmWave and carrier aggregation. This means that our customers can enhance their 5G offerings with higher uplink data rates, dramatically improving the user experience. “

JS Pan, Managing Director of Wireless Communications Systems and Partnerships at MediaTek, said: “This world’s first demonstration of industry-leading mmWave uplink technology in partnership with Ericsson shows that MediaTek is once again setting 5G milestones. and pushes the limits of his abilities. 5G mmWave connectivity helps increase network coverage and capacity, faster performance, and introduces more diverse use cases.

This latest technological milestone follows a single multi-input, multi-output single release (SU-MIMO demo in April 2021 when Ericsson delivered a single user uplink data rate of 315 Mbps, 15 to 20 times more faster than the current typical uplink speed.

Technical details

Ericsson and MediaTek integrated four component carriers, each 100 MHz, in the uplink using a non-autonomous architecture (aggregating 8x100MHz in the downlink and 4×100 MHz in the uplink). The integration carried out in the laboratory made it possible to achieve a speed of 495 Mbps (425 Mbps in 5G plus 70 Mbps in 4G), thus doubling the current uplink speed on the market.

The test was performed using the 39 GHz spectrum of NR (400 MHz) and combining it with a single carrier of the LTE 1900 MHz (20 MHz) spectrum. All of the bandwidth was then aggregated using LTE and NR links, achieving a total throughput of nearly 500 Mbps.

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