Source: http://datatrak.jp/news-archives/2007.htm
Timestamp: 2018-12-19 13:45:34
Document Index: 691113709

Matched Legal Cases: ['Art2', 'Art2', 'Art2', 'Art2', 'Art2', 'Art2', 'Art2', 'Art2']

DATATrak News - 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 !
- 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.
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
Freq. BW
4.9 – 5.0
5.03 – 5.091
5.15 – 5.25
5.25 – 5.35
5.47 – 5.725
(including onboard flight)
(excluding onboard flight)
5/10/20MHz 40MHz
Mod. method
OFDM method, DS method, Single carrier method
OFDM method
Max ant. power
FH: 3mW/MHz OFDM/DS: 10mW/MHz
250mW and 50mW/MHz
OFDM, DS: 10mW/MHz
Single carrier: 10mW
5mW/MHz
250mW and 25mW/MHz
Max. ant. gain
12.14dBi
50mW/MHz
25mW/MHz
DFS, TPC
(master station only)
(relay possible)
At discretion (slave stations not controlled by master stations are not authorized)
February 2007 - More information about High Speed PLC equipment in Japan
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.
Summary of the current technical requirements for 2MHz to 30MHz wideband Power Line Communication equipment (Radio Equipment Regulations)
(Please note that technical requirements for the older 10kHz to 450kHz PLC equipment are omitted.)
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
Allowance (1uA = 0dB)
Over 150kHz and less than 500kHz
36 – 26dBuA
26 – 16dBuA
Over 500kHz and less than 2MHz
26dBuA
16dBuA
Over 2MHz and less than 15MHz
30dBuA
20dBuA
Over 15MHz and less than 30MHz
10dBuA
Interference Voltage when not communicating
Allowance (1uV = 0dB)
66 – 56dBuV
56 – 46dBuV
Over 500kHz and less than 5MHz
56dBuV
46dBuV
Over 5MHz and less than 30MHz
60dBuV
50dBuV
Allowance (1uV/m = 0dB)
Over 30MHz and less than 230MHz
30dBuV/m
Over 230Hz and less than 1,000MHz
37dBuV/m
Precise test configurations are stipulated in the “Radio Law Enforcement Regulations”
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.
Copyright (C) 2000 - 2007 [DATATrak Co., Ltd.] All rights reserved.