17 (end) Communication Radio systems Frequency Remarks technologies 135.7 kHz 137.8 kHz Radio service with – Amplitude transmitter and receiver modulation, devices used for Amateur frequency technology research and 472 kHz 479 kHz – modulation, SSB training of amateur radio etc. operators. 90 kHz 110 kHz (LORAN) Radio system that secures – safety of vessel operation 424 kHz, 490 kHz, 518 kHz Maritime radio Pulse, FSK etc. which is used at port and (NAVTEX) harbor or on the sea. 495 kHz 505 kHz (NAVDAT) – 148.5 kHz 283.5 kHz (Region 1) Audio broadcasting – 525 kHz 526.5 kHz (Region 2) Amplitude service with receiver – Sound broadcast 526.5 kHz 1606.5 kHz (Global) modulation/DRM devices which use – 1605.5 kHz 1705 kHz (Region 2) medium wave band. – FIGURE 12 WPT spectrum considered and incumbent systems (10-300 kHz) FIGURE 13 WPT spectrum considered and incumbent systems (400 kHz-13.56 MHz) In China, different kinds of high power WPT devices have been invented, which include WPT for home appliance operating frequency ranges of 47-53 kHz and WPT for light and heavy duty vehicles operating working frequency ranges of 37-43 kHz and 82-87 kHz. Facing the market requirement, sufficient coexistence research before relevant frequency planning is urgent and necessary. Considering current national frequency planning, the wireless communication system which has been put into practice and other wireless communication requirements, the coexistence studies including dedicated frequency band, shared frequency band, separation distance and so on are ongoing. CCSA TC5 WG8 will initiate a new project to study the coexistence issues of WPT with incumbent radio-communication systems in 2015. Partial research results will be completed in 2016. In Japan, target WPT systems and candidate proposed frequency ranges with fundamental parameters were summarized as shown in Table 18.
17 (end) Radio systems Frequency Communication technologies Remarks Amateur 135.7 kHz – 137.8 kHz Amplitude modulation, frequency modulation, SSB etc. Radio service with transmitter and receiver devices used for technology research and training of amateur radio operators. 472 kHz – 479 kHz Maritime radio 90 kHz – 110 kHz (LORAN) Pulse, FSK etc. Radio system that secures safety of vessel operation which is used at port and harbor or on the sea. 424 kHz, 490 kHz, 518 kHz (NAVTEX) 495 kHz – 505 kHz (NAVDAT) Sound broadcast 148.5 kHz – 283.5 kHz (Region 1) 525 kHz – 526.5 kHz (Region 2) 526.5 kHz – 1606.5 kHz (Global) 1605.5 kHz – 1705 kHz (Region 2) Amplitude modulation/DRM Audio broadcasting service with receiver devices which use medium wave band. FIGURE 12 WPT spectrum considered and incumbent systems (10-300 kHz) FIGURE 13 WPT spectrum considered and incumbent systems (400 kHz-13.56 MHz) In China, different kinds of high power WPT devices have been invented, which include WPT for home appliance operating frequency ranges of 47-53 kHz and WPT for light and heavy duty vehicles operating working frequency ranges of 37-43 kHz and 82-87 kHz. Facing the market requirement, sufficient coexistence research before relevant frequency planning is urgent and necessary. Considering current national frequency planning, the wireless communication system which has been put into practice and other wireless communication requirements, the coexistence studies including dedicated frequency band, shared frequency band, separation distance and so on are ongoing. CCSA TC5 WG8 will initiate a new project to study the coexistence issues of WPT with incumbent radio-communication systems in 2015. Partial research results will be completed in 2016. In Japan, target WPT systems and candidate proposed frequency ranges with fundamental parameters were summarized as shown in Table 18.
R-REP-SM.2303-2-2017-MSW-E.docx