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Japan opening 5470-5725 MHz for license-free WLANs

Japan's Ministry of Internal Affairs and Communications (MIC) has launched a public consultation on its proposals to let wireless data networks use the 5470-5725 MHz band on a license-free basis, indoors and out, from January 2007.

Since this band is shared with radars, the WLANs must be equipped with Dynamic Frequency Selection (DFS), to be able to avoid the operating frequencies of nearby radars. Measurements likely to form the basis of an international DFS standard were delivered to the US Federal Communications Commission last summer. According to MIC Communications News (24 November 2006), MIC's proposals are also based on these measurements.

These graphics are from the article in MIC Communications News. They summarize the evolution of band allocations and standards for license-free WLANs in Japan. Proposals for the new band are highlighted in yellow:

Table of allocations and interface specs for license-free WLANs in Japan

Evolution of the allocations for license-free WLANs in Japan

[ - 7 December 2006]

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