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LoRaWAN 1.0.2 Regional Parameters ©2017 LoRa Alliance™ Page 33 of 55 The authors reserve the right to change specifications without notice. 2.6 CN 470-510MHz Band 876 2.6.1 CN470-510 Preamble Format 877 The following synchronization words should be used: 878 879 Modulation Sync word Preamble length LORA 0x34 8 symbols 2.6.2 CN470-510 Channel Frequencies 880 881 In China, this band is defined by SRRC to be used for civil metering applications. 882 The 470 MHz ISM Band shall be divided into the following channel plans: 883 Upstream – 96 channels numbered 0 to 95 utilizing LoRa 125 kHz BW varying from 884 DR0 to DR5, using coding rate 4/5, starting at 470.3 MHz and incrementing linearly 885 by 200 kHz to 489.3 MHz. 886 887 Channel Index 6 to 38 and 45 to 77 are mainly used by China Electric 888 Power. In the areas where these channels are used by China Electric 889 Power, they should be disabled. 890 891 Downstream – 48 channels numbered 0 to 47 utilizing LoRa 125 kHz BW varying 892 from DR0 to DR5, using coding rate 4/5, starting at 500.3 MHz and incrementing 893 linearly by 200 kHz to 509.7 MHz 894 895 96 uplink channels 48 downlink channels 470.3 489.3 500.3 509.7 896 Figure 3: CN470-510 channel frequencies 897 898 The LoRaWAN can be used in the Chinese 470-510MHz band as long as 899 The radio device EIRP is less than 19.15dBm 900 The transmission never lasts more than 5000 ms. 901 902 903 904 CN470-510 end-devices should be capable of operating in the 470 to 510 MHz frequency 905 band and should feature a channel data structure to store the parameters of 96 uplink 906 channels. A channel data structure corresponds to a frequency and a set of data rates 907 usable on this frequency. 908 If using the over-the-air activation procedure, the end-device should broadcast the JoinReq 909 message on a random 125 kHz channel amongst the 96 uplink channels defined using DR5 910 to DR0. 911

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