November 2007  
 - IEEE802.11j 4900 - 5000MHz Wireless Access System
  The MIC has announced a 5 years extension for the allocation of the 5030-5091MHz bandwidth for Wireless Access System use, until November 2012.

 - New spurious requirements
  As announced in our December 2005 News Section, the grace period for the new spurious requirements ends this month. New RF equipment submitted for RF certification in Japan now has to comply with the new spurious limits and measurement methods.

  Feel free to contact us for more information !

August 2007  
 -  Wimax and Mobile Wimax certification in Japan

Currently In Japan, and since August 1st 2008, the 2.5GHz band is allowed for WiMax communication. (No date is set yet for other frequency bands, which are already allocated to weather radars or other communication interfaces.)

The use of the 2,5GHz band requires an equipment certification (type or per-product) from a telecommunication certification CAB, as well as an operation  license from the Ministry.

Product Classification in the Rdaio Law Certification Regulations (Shoumei Kisoku)
- Art2-1-49: OFDMA wideband mobile wireless access base station
- Art2-1-50: OFDMA-W wideband mobile wireless access base station
- Art2-1-51: OFDMA wideband mobile wireless access land mobile station
- Art2-1-52: OFDMA-W wideband mobile wireless access land mobile station
- Art2-1-53: TD-OFDMA wideband mobile wireless access base station
- Art2-1-54: TD-OFDMA wideband mobile wireless access base station
- Art2-1-55: TD-FDMA wideband mobile wireless access land mobile station
- Art2-1-56: TD-FDMA wideband mobile wireless access land mobile station

Test reference for Wimax products : TELEC T-136 and T-137 (August 2007)

However, as of today, there is still no carrier servicing WiMax, and therefore it is not possible to obtain a license.

  Feel free to contact us for more information !

July 2007 - Revision of the Technical Requirements for IEEE802.11n compliant 40MHz bandwidth Radio equipment

 The MIC (Japanese Ministry of Internal Affairs and Communications) has revised the Technical requirements for wireless LAN equipment, in order to cover IEEE802.11n (MIMO type) compliant equipment in the 2.4 and 5GHz bandwidths, and the updated requirements (in red) are summarized in the table below.

 Source (MIC - Japanese) : 
   http://www.soumu.go.jp/s-news/2007/pdf/070207_8_bs1.pdf

N/S = Not Specified

N/A = Not Applicable

Feel free to contact us for more information !

   With the revision of the Radio Law, back in  October 4th, 2006, high speed PLC (Power Line Communication) equipment can now be used in Japan.

 To the authorized 10kHz – 450kHz frequency range for the power line carrier wave prior to the revision of the law, was added the new frequency range: 2MHz – 30MHz for indoor use.

 PLC equipment are categorized as “Equipment using high frequencies” in Japan, and require conformance certification in order to be operated in Japan.

 There are basically two processes, depending on the characteristics of PLC equipment

 1 – Certification to the Telecommunications Business Law, (type certification) with the submission of a compliant test report and application to an appointed CAB, such as JATE. (This process may only apply if equipment is equipped with a wireline trunk interface, WAN, PSTN, Etc.) Please refer to the wireline certification process, or contact us for more information.

 2 – Certification to the Radio Law, Article 100, (type certification) as “equipment using high frequencies”. This certification is rather an “authorization of use”, granted by the Ministry of Internal Affairs and Communications (hereinafter referred to as MIC) to PLC equipment successfully tested.

Tested items are:
- Electrical current sent to the power line by the equipment during communication.
- Electrical Voltage sent to the power line by the equipment when idle.
- Electric field strength of the radiated spurious during communication.

Applications have to be submitted to the local branch of MIC and depends on the address of the applicant.

 (Please note that technical requirements for the older 10kHz to 450kHz PLC equipment are omitted.)

 Frequency Range
   2MHz to 30MHz for indoor use. If the carrier wave is modulated using a spread spectrum method, the spread frequencies must remain within 2MHz and 30MHz.

   Interference Current during communication

   Interference Voltage when not communicating

   Radiated Interference

Precise test configurations are stipulated in the “Radio Law Enforcement Regulations”

Feel free to contact us for more information.

New Frequencies allocated for low-power WLAN in the 5.6GHz band

   On January 31st, 2007, the Radio law was amended to allocate new frequencies in the 5.6GHz bandwidth for Low-power WLAN equipment.

   The new frequencies are: 5,500MHz, 5,520MHz, 5,540MHz, 5,560MHz, 5,580MHz, 5,600MHz, 5,620MHz, 5,640MHz, 5,660MHz, 5,680MHz, and 5,700MHz.

   The main requirements will be updated soon.

  Feel free to contact us for more information !

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