doc.: ieee 802.11-04/0033r0 submission january 2004 y. inoue, et. al., nttslide 1 japanese frequency...
TRANSCRIPT
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.