Mobile World Congress 2026 in Barcelona just wrapped, and the wireless industry has already shifted its attention past 5G to the next generation — a transition that carries notable weight given how widely 5G’s own promises outpaced its real-world delivery.
According to the report, 6G is expected to deploy globally by approximately 2030, though some carriers may launch it in select regions one or two years earlier. David Witkowski, a senior member of the Institute of Electrical and Electronics Engineers (IEEE), describes a consistent pattern: mobile networking technology upgrades roughly every ten years. The formal performance requirements for 6G will be set by the United Nations International Telecommunication Union Radiocommunication Sector (ITU-R) and designated IMT-2030 — continuing a naming sequence that placed 5G as IMT-2020, 4G as IMT-2010, and 3G as IMT-2000.
Key industry players including Qualcomm, Ericsson, and Nokia opened discussions at last week’s congress, while the mobile broadband standards body 3GPP is already working through technical blueprints. The rollout, when it comes, will begin with new radios on cell towers and buildings, followed by the build-out of the computer core that manages interactions between the network and the public internet. Devices will need to support the new standard — meaning consumers will eventually need a 6G-capable phone.
Upload Speed Is the Defining Focus
Where 5G cut corners, 6G intends to compensate. Witkowski notes that while 5G succeeded in improving download performance — phones now typically receive downlink speeds in the range of 100 to 200 megabits — the uplink side was largely left behind. The stated aim for 6G is to make upload speeds symmetrical with download speeds.
The demand driving that goal is concrete. Remote work normalized videoconferencing. Companies now route large files — security camera footage, generative AI photo and video projects — to cloud servers for processing. Wearable devices like smart glasses, earbuds, and AI-integrated accessories are multiplying, each sending streams of raw data upward to the cloud.
“We are uploading a lot more to the network now because of AI,” Witkowski says. “We’re shoving unparsed, unanalyzed raw data to a cloud and hoping that AI will figure it out.”
That pressure on uplink capacity is the architectural problem 6G is being designed to solve.
Spectrum and Honest Expectations
On the speed and capacity side, 6G may tap into the Terahertz (THz) spectrum — higher frequency than the millimeter wave used in 5G, though with an even shorter range. As with every prior generation, the number of devices a single cell tower can serve is also projected to increase.
Still, the industry’s framing is familiar. Witkowski’s framing of each new generation captures the dynamic plainly: every cycle attempts to overcome the previous generation’s limitations while adding functionality considered important at the time. Whether 6G meets both criteria, he says, depends on what the goal actually is.
The marketing language is already arriving, this time pairing 6G with AI as a central theme. Average consumers who found 5G’s impact modest in daily life should expect the same aspirational tone throughout the build-up to 2030.
The next concrete step is the finalization of official IMT-2030 performance requirements by the ITU-R, which will define what 6G must deliver before commercial deployment begins.
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