On 6 November 2026, Japan's Ministry of Internal Affairs and Communications (MIC) published the results of its consultation on a draft ordinance, along with a report from the Radio Regulatory Council, moving a new class of 800MHz low-power wireless mobile stations onto the registration route. The change adds item 12 to Article 17 of the Radio Law Enforcement Regulations, according to MediaNama's report. The item is narrow, and it does not touch platform regulation. But it shows how a regulator can open spectrum quickly while keeping interference risk under control.
What changed
According to MediaNama, stations using the 800MHz low-power system will operate through registration. Frequencies are restricted to 846.5MHz to 848.5MHz, a 2MHz slice, to manage coexistence with digital MCA, the land-mobile radio service. TOA, a commenter on the draft, described the system as able to operate at antenna power of up to 200mW. MIC ran its consultation from 12 September to 16 October 2026. The ministry's own consultation notice, dated 11 September 2026, confirms those dates.
The consultation drew 10 submissions. MediaNama breaks them down as six from companies or organisations, two anonymous and two from individuals. It reports that the radio regulatory council endorsed the change. I could not confirm that endorsement on the MIC pages I reviewed, so it rests on MediaNama's reporting. Only one minor drafting comment changed the text. The registration system is to be reviewed after June 2029.
Why the spectrum is available
The band is being freed by a planned shutdown. MIC's October 2025 partial report from the Information and Communications Council says the discontinuation of digital MCA service at the end of May 2029 has been announced. The council studied technical requirements for 800MHz broadband low-power systems and for 3D positioning systems. The report says one of the systems studied was withdrawn because its introduction had not yet been decided. It adds that MIC planned to develop the relevant regulations from the report. The November draft is that follow-through.
The strongest case for caution
The case for slower, more tightly controlled access is serious. Digital MCA users, such as businesses and public-safety-adjacent operators, still depend on the band until 2029. A registration regime puts less administrative review in front of each deployment than individual licensing does. TOA warned that neighbouring outdoor installations could interfere with each other. A regulator that waves through installations before it knows who is transmitting from where may find interference hard to trace. A narrow 2MHz band, a power cap and a registration record that identifies each operator are the tools MIC is using to answer that concern. They are reasonable ones.
Where proportionality points the other way
The deferred requests are where the proportionality question lies. Morse Micro asked for simpler online applications and an exemption for limited indoor use. TOA also suggested exempting indoor use under specified conditions. Murata asked MIC to revisit the registration rules around the planned end of digital MCA in 2029. MIC replied that registration can already be filed electronically, and deferred the indoor-use requests and Murata's as 'reference for future study'.
This is defensible for a first step. Indoor use does carry much lower interference risk than outdoor use, which is why the proposals are credible. But no one has yet measured that risk in this band under these rules. Registering first and loosening later is easier to reverse than the opposite sequence. A regulator that exempts indoor devices and then finds problems has to claw back a freedom that users already hold.
The weakness is that "reference for future study" is not a test. Spectrum rules should not wait for a vague review date. They need defined evidence: interference complaints logged, registrations processed and how long each took. A review set for after June 2029, a month after digital MCA is due to end, would then be a decision point and not just a calendar entry. If the operator who has to file for a tiny indoor sensor network spends more effort on paperwork than on engineering, that cost shows up as fewer deployments and less innovation. It will not appear as a rule violation.
What good practice looks like
Three elements make this design worth copying elsewhere.
- A bounded band and power ceiling. Limits stated in the rule itself, a 2MHz band and 200mW as reported, give manufacturers certainty about design targets without case-by-case negotiation.
- A public consultation with a visible record. Ten submissions is a small response, but the process surfaced specific, technical objections and showed which were deferred and which were adopted. That record is useful for later review.
- A built-in sunset for the rules themselves. Committing to a review gives industry a date to plan against, which most regulations lack.
The gap is that the indoor-use and registration-review asks were deferred without a stated evidentiary bar. Morse Micro is a Wi-Fi HaLow chip supplier. A March 2026 EE Times Japan feature says Morse Micro's side expects news on 850MHz-band use in Japan. Its interest in simpler filing is a commercial one, and the comparison with the ministry's cautious posture should be read with that in mind. Still, device makers and system integrators need to know in advance what would justify indoor relief or a revisited registration system.
The takeaway for Japan's wider digital policy
This ordinance is not the platform-law story. The only thing it shares with Japan's broader digital regulation is a method: write the rule narrowly, consult, publish the response, and set a review date. Japan's tech regulators will face the same trade-off in every sector. Light-touch registration gets new technology to market faster. The price is that regulators must monitor the outcomes themselves, because they no longer pre-approve each deployment. The right test of this rule is whether, by June 2029, MIC can show registration counts, processing times and interference data. If it can, the deferred requests can be granted or refused on evidence. If it cannot, the review will turn into a negotiation over the same open questions.