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What changed for 2400MHz, 5100MHz and 5800MHz equipment? Direct answer

MIIT revised the permitted uses, radio-frequency and antenna requirements, interference controls, Internet Protocol version 6 (IPv6) condition, model approval and station-licensing rules. The notice took effect on 1 January 2022.

From 15 October 2023, model-approval applications for equipment in these bands must use the notice's technical requirements. Older approvals and equipment already in use received limited transition treatment.

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Author
Sorena AI
Published
Jul 5, 2026
Updated
Oct 15, 2026
2 sections3 primary sources
Overview

MIIT Notice 工信部无〔2021〕129号 revised the rules for transmitters operating in 2400-2483.5MHz, 5150-5350MHz and 5725-5850MHz. It updated permitted uses, radio-frequency (RF) and antenna design, multi-antenna calculations, unwanted-emission limits, interference-avoidance methods, the conditional IPv6 requirement, and radio station licensing. The notice took effect on 1 January 2022. From 15 October 2023, model-approval applications must comply with its technical requirements.

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Question 1

Short answer

The 2400MHz band supports broadband wireless access including wireless local area networks (WLAN), Bluetooth and point-to-point links. The 5100MHz band supports broadband wireless access but is limited to indoor use and excludes use inside automobiles. The 5800MHz band supports broadband wireless access, point-to-point links and electronic toll collection. No station or device has exclusive use of these shared bands.

For equipment in these bands, the RF unit and antenna must be integrated or designed and produced with synchronized matching. Users may not substitute another antenna or add an RF power amplifier. Equipment generally needs radio transmitting equipment model approval, except qualifying micro-power short-range equipment governed by MIIT Announcement 2019 No. 52.

  • Equipment in 5250-5350MHz must use dynamic frequency selection () with no disable option and transmit power control () with a range of at least 6 dB. Without TPC, both and EIRP spectral-density limits are reduced by 3 dB.
  • Equipment in all three bands must meet one of the interference-avoidance methods in Annex 2. The official interpretation describes listen-before-talk, monitoring and avoidance, or an equivalent occupancy rate no greater than 10 percent.
  • A WLAN device that assigns public-network Internet Protocol (IP) addresses must support IPv6 and enable IPv6 address assignment by default. Since 1 December 2023, the model-approval test also checks IPv6 capability; the product must retain a user configuration option and explain configuration in its instructions. WLAN equipment produced or imported before 1 December 2023 may continue to be sold and used until scrapped under the 2023 notice. The IPv6 condition does not apply merely because a product has Wi-Fi.
  • Equipment subject to special national information-security requirements must also meet the GB 15629 WLAN air-interface access-control security series.
Question 2

Station licensing and transition

A wireless LAN access point, broadband wireless access centre station or point-to-point station needs a provincial radio station licence only when it is outdoors and its is more than 20 dBm in 2400MHz or more than 30 dBm in 5800MHz. Other equipment and stations in the three bands do not need a station licence under this notice. A 5100MHz station must remain at least 3 km from a lawfully used same-band satellite radiodetermination or fixed-satellite earth station operating in the space-to-Earth direction.

The technical transition is now over for new applications. Before 15 October 2023, equipment meeting the former rules but not the new technical requirements could still apply for model approval or an extension under the former rules. The official interpretation says equipment already put into use could remain in use until scrapped, and explains that a model approval's validity is the period for producing or importing equipment for domestic sale or use, not a limit on how long an end user may use equipment already placed in service.

  • Retain the approved band, channel, power, antenna, RF-unit integration, multi-antenna calculations, unwanted-emission results and selected interference-avoidance method for the finished model.
  • For 5250-5350MHz, retain tests showing there is no disable option and evidence, or the reduced-limit test results for equipment without TPC.
  • For WLAN equipment with public IP address assignment, retain IPv6 support and default-enable evidence; record why the condition does not apply where that function is absent.
  • For each deployment, record indoor or outdoor use, station type, , coordinates, any 5100MHz satellite-earth-station separation check, and the station-licence conclusion.
  • For a legacy model, retain the approval or extension application date and certificate validity for continued production or import for domestic sale or use, and evidence that equipment relying on the use-until-scrapped transition was already put into use.
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Primary sources

References and citations

MIIT Interpretation of the 2400MHz, 5100MHz and 5800MHz Radio Notice
miit.gov.cn3 citations
Referenced sections
  • Official interpretation explaining the policy changes, interference controls and transition treatment.
  • Explains the multi-antenna, unwanted-emission and interference-avoidance changes, including the equivalent-occupancy method.
  • Explains the two-year transition, former-rule applications before the cutoff, certificate validity and continued use of equipment already deployed.
MIIT Notice on 2400MHz, 5100MHz and 5800MHz Radio Management
wap.miit.gov.cn3 citations
Referenced sections
  • Official text of 工信部无〔2021〕129号, including band uses, equipment technical rules, model approval, station licensing, interference controls and implementation dates.
  • Clauses 1-4 and Annexes 1-2 establish the band uses, antenna design, model approval, DFS, TPC, interference-avoidance, IPv6 and security conditions.
  • Clauses 5-7 and 13-14 set the outdoor EIRP station-licence thresholds, the 5100MHz separation rule, the 1 January 2022 effective date and the 15 October 2023 technical cutoff.
MIIT Notice on IPv6 Capability Testing for WLAN Equipment Model Approval
miit.gov.cn2 citations
Referenced sections
  • Official testing and product-instruction requirements in force from 1 December 2023 for WLAN equipment with public IP address assignment.
  • Requires testing from 1 December 2023 for WLAN equipment with public IP address assignment and specifies default enablement, user configuration and instruction content.

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