Ericsson & MediaTek near 500 Mbps upload in mmWave carrier aggregation tests
Ericsson announced a new upload speed record with 5G on mmWave spectrum – double the current upload speeds and the fastest recorded to date.
In a four-component carrier uplink aggregation tests with MediaTek, a peak throughput rate of 495 Mbps was achieved. This included 425 Mbps on 5G New Radio (5G RAN) test and a 70 Mbps on 4G-LTE test.
The demo performed in June used pre-commercial software on a device containing a MediaTek M80 5G chipset. The lab tests used Ericsson RAN Compute baseband 6648 with the AIR 5331 millimeter wave radio. Four carriers of 100 MHz each in the 39 GHz band were used for non-standalone 5G, along with 20 MHz in the 1,900 MHz band for LTE (more in Tech Details below).
Ericsson said the test of uplink carrier aggregation is the first of its kind, as the industry previously focused more on boosting download speeds. The increased adoption in the past year of home working and schooling has driven the use of applications like videoconferencing that require also fast upload speeds.
Upload speed dictates how quickly data is sent from the computer or handheld device to the internet. This includes uploading files, such as photos and videos to social media or collaborative worksites. Upload speeds are also crucial to the image and sound quality of video conferencing. Strong uplink means less or even none of those frozen screens, or broken audio, when using apps like Skype or Microsoft Teams. Similarly, faster uplink improves voice over internet protocol (VoIP) calls and online gaming experience.
Hannes Ekström, Head of Product Line 5G RAN at Ericsson, said: “We continue to build on our previous successes, breaking our own record in upload speed. With a peak rate of close to 500 Mbps, we’ve demonstrated in this latest milestone with MediaTek how unprecedented data speeds can be delivered in uplink using mmWave and carrier aggregation. This means our customers can enhance their 5G offerings with higher uplink data rates, vastly improving user experience.”
JS Pan, General Manager of Wireless Communication System and Partnership at MediaTek, said: “This world’s first demonstration of an industry-leading mmWave uplink technology in partnership with Ericsson, shows MediaTek is again establishing 5G milestones and pushing the envelope of its capabilities. 5G mmWave connectivity helps boost network coverage and capacity, faster performance, and introduces more diverse use cases.”
This latest technology milestone follows a single user multiple input multiple output (SU-MIMO demo in April 2021 when Ericsson delivered a single user uplink data rate of 315 Mbps, 15-20 times faster than current typical uplink speed.
Ericsson and MediaTek integrated four component carrier, each of 100 MHz, in the uplink using non-standalone architecture (aggregating 8x100MHz in the downlink and 4×100 MHz in the uplink). The integration carried out in a lab setting resulted in a throughput of 495 Mbps (425 Mbps in 5G plus 70 Mbps in 4G), doubling the current uplink speed on the market.
The test was done using the 39 GHz spectrum of NR (400 MHz) and combining it with a single carrier of LTE 1900 MHz spectrum (20 MHz). The whole bandwidth was then aggregated using the LTE and NR links, realizing a total throughput of close to 500 Mbps.
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