January 2004

Y. Inoue, et. al., NTTSlide 1

doc.: IEEE 802.11-04/0033r0

Submission

Japanese Frequency RegulationsRelated to TGn Functional

Requirements

Yasuhiko Inoue, Tomoaki Kumagai, Shuji Kubota, Yusuke Asai

NTT

January 2004

Y. Inoue, et. al., NTTSlide 2

doc.: IEEE 802.11-04/0033r0

Submission

Outline• This presentation introduces the Japanese regulation

that specifies the channel bandwidth for 5GHz band WLANs, and suggests a requirement for 802.11n devices.

• Many Japanese companies support the conclusion of this presentation:– Company 1

– Company 2

– Company 3

– Company 4

January 2004

Y. Inoue, et. al., NTTSlide 3

doc.: IEEE 802.11-04/0033r0

Submission

Frequency Regulations in Japan

• Radio Law

• Radio Law Enforcement Regulations

• Ministerial Ordinance of MPHTP– Radio Equipment Ordinance– Terminal Equipment Ordinance– Certification Ordinance, etc

January 2004

Y. Inoue, et. al., NTTSlide 4

doc.: IEEE 802.11-04/0033r0

Submission

Regulations Related with Channel Bandwidth

• Radio Law Enforcement Regulations:– Article 6: Used Frequency (5.170, 5.190, 5.210, 5.230 MHz)

• Radio Equipment Ordinance: – Article 6:

• Occupied channel bandwidth allowance: <= 18MHz

– Article 49-20:• Adjacent channel leakage power

• Out of band radiated power

January 2004

Y. Inoue, et. al., NTTSlide 5

doc.: IEEE 802.11-04/0033r0

Submission

Conclusion

• Summary of Japanese Frequency Regulation: – Only 20MHz operation is allowed in current

Japanese radio regulations for 5GHz band wireless LANs.

• Suggestion for TGn:– Operations using more than 20MHz bandwidth

should not be mandatory for 802.11n devices.