In China, which of the following WLAN frequency bands are supported by regulations? (Multiple choice)

Question

Options

• A2.4-2.4835GHz
• B5.15-5.25GHz
• C5.25-5.35GHz
• D5.725-5.850GHz

• A
  82% (36)
• B
  14% (6)
• C
  5% (2)

Explanation

China's MIIT/SRRC regulations authorize WLAN use in the globally recognized ISM (Industrial, Scientific, Medical) bands: 2.4–2.4835 GHz (option A) and 5.725–5.850 GHz (option D). These bands are permitted for general indoor and outdoor use without special licensing.

Options B (5.15–5.25 GHz) and C (5.25–5.35 GHz) are the lower 5 GHz U-NII sub-bands. Unlike the US and EU, China does not permit these for standard WLAN deployment - they are either restricted or reserved for other services (including radar), and their use requires DFS (Dynamic Frequency Selection) coordination that Chinese regulations historically have not granted to consumer WLAN.

Memory tip: Remember "China picks the two ISM bands" - 2.4 GHz and 5.8 GHz. The middle 5 GHz options (5.15–5.35 GHz) are the "gap" China skips. If you see 5.1x or 5.2x/5.3x GHz in a China-specific question, eliminate them.

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