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Japanese Regulatory Update on 60 GHz Band: Impact on 802.11ay Specifications

This update by Kazu Takahashi of Panasonic details the latest Japanese regulatory changes affecting the 60 GHz band, including antenna input power, occupied bandwidth, and new rules under discussion. Key aspects such as antenna power categories, bandwidth specifications, and technical conditions are highlighted, along with suggestions for measurement methods to comply with the new regulations. The conclusion emphasizes the support for long-range usage and improved throughput using OFDM-based channel bonding.

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Japanese Regulatory Update on 60 GHz Band: Impact on 802.11ay Specifications

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  1. Kazu Takahashi, Panasonic 60 GHz band Japanese Regulatory Update Authors: • Date: 2015-May-xx

  2. Abstract • This contribution provides a latest status for the Japanese regulatory status which may affect on 802.11ay specifications. • Major changes are; • Antenna input power • Occupied bandwidth • New rule is under discussion. Now asking for public comment until May 22nd (17:00 JST).

  3. 60 GHz band Regulations

  4. Kazu Takahashi, Panasonic Antenna input power and antenna gain • Defined two categories • 1: Existing low emission power point to point system • 2: Higher emission power point to multi-point system • Existing system (no changes) • Antenna power is less than 10 mW • Antenna gain is less than 47 dBi • EIRP is not specified • New system (antenna power in excess of 10 mW) • Antenna power is 10 mW ~ 250 mW • Antenna gain should be greater than 10 dBi. • EIRP is less than 40 dBm

  5. Kazu Takahashi, Panasonic Occupied bandwidth/Unwanted emission • OBW • Not specified up to 9 GHz • Allowable value of unwanted emission intensity • Defined as absolute value referring 11ad spectrum mask Lower Band Ch#1 Ch#2 -9 dBm/MHz -17 dBr -26 dBm/MHz -22 dBr -30 dBm/MHz -30 dBr 54 55 56 57 58 59 60 61 0.94 2.7 1.2 -3.06 -0.94 3.06 -1.2 -2.7 58.32 GHz 60.48 GHz Upper Band Ch#4 Allowable value of unwanted emission intensity -9 dBm/MHz -17 dBr 11ad/WiGig Spectrum mask -26 dBm/MHz -22 dBr -30 dBm/MHz -30 dBr 62 63 64 65 66 67 68 69 0.94 2.7 1.2 -0.94 -3.06 3.06 -1.2 -2.7 64.8GHz

  6. Kazu Takahashi, Panasonic Technical Conditions Detail (Draft)

  7. Kazu Takahashi, Panasonic Measurement Method • Measurement method for new regulation is not defined yet, it will be defined after approved. • Possible method; • Single Antenna: Antenna Power can be calculated by measured EIRP, subtracting with antenna gain. • MIMO: Aggregating for each antenna power DUT Spectrum Analyzer/ Power Meter 3mdistance recommended EIRP Antenna power

  8. Kazu Takahashi, Panasonic Conclusion • Japanese new regulation will support long range usage and higher throughput using channel bonding • OFDM based channel bonding would be better to meet unwanted out of band emission.

  9. Kazu Takahashi, Panasonic References • [1]http://www.soumu.go.jp/main_sosiki/joho_tsusin/policyreports/joho_tsusin/idou/60ghz.html • [2] http://www.soumu.go.jp/menu_news/s-news/01kiban14_02000219.html

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