Ericsson and MediaTek say they have demonstrated 5G network positioning accurate to within a decimetre — roughly the width of a human hand — a claim that, if replicated in live networks, would put cellular positioning in the same class as satellite-grade navigation for the first time.

The two companies announced the result jointly, with Computer Weekly reporting the achievement under the headline "Ericsson, MediaTek achieve decimetre-level 5G network accuracy." The announcement itself gives away the essential commercial logic: positioning is one of the few 5G capabilities operators can plausibly monetise beyond connectivity, through use cases such as asset tracking, industrial automation and targeted emergency services.

What is actually being claimed?

The claim is decimetre-level accuracy — a order-of-magnitude improvement over the several-metre accuracy typical of legacy cellular positioning based on 4G LTE. For context, standard GPS delivers accuracy of a few metres in open sky; getting a cellular network to ten centimetres would exceed that benchmark while working indoors, where satellite signals fail.

The pairing matters. Ericsson supplies the radio network side; MediaTek supplies the device chipset side. A positioning result demonstrated jointly across both ends of the link carries more weight than a lab result from either party alone, because live-network positioning depends on both network timing and device measurement capability.

What the announcement does not say

The public claim, as reported, is thin on the conditions of the demonstration. Several questions remain open:

• Was the result achieved in a laboratory, a controlled field trial, or a commercial network?
• Which 3GPP release and which positioning reference signals were used?
• How many cells, devices or measurement rounds were involved?
• Is there an operator partner, a timeline, or a committed deployment?

None of these details appears in the reported claim. Until they do, decimetre-level accuracy should be read as a vendor and chipset-maker capability demonstration, not as a network feature subscribers can expect on a stated date. Precision positioning results in controlled conditions routinely degrade in dense urban environments, factories with metal clutter, and networks carrying full traffic loads.

The standards and commercial context

3GPP has progressively tightened positioning requirements across 5G releases, with Release 16 introducing positioning reference signals designed for indoor and industrial use cases, and later releases pushing toward higher-accuracy targets. Vendor demonstrations such as this one typically serve two purposes: they pressure standards bodies toward stricter requirements, and they signal to enterprise buyers that the capability is approaching commercial readiness.

The commercial prize is real but unevenly distributed. Wide-area consumer handsets rarely need ten-centimetre accuracy; the paying demand sits in logistics, manufacturing, ports and campuses, where operators can sell positioning as a managed service on private 5G networks. Ericsson's interest is obvious on that side of the market. MediaTek's interest lies in embedding the capability into mainstream silicon, so device support stops being a bottleneck.

The caveat, and what to watch

Every positioning milestone to date has arrived with an asterisk: controlled conditions, ideal network geometry, reference devices rather than commercial handsets. This one, on the available evidence, is no different.

The signal to watch for next is an operator-branded field trial with published methodology — a named network, real devices, and a date attached.