Issue link: https://read.uberflip.com/i/1479525
LoRaWAN® Regional Parameters RP002-1.0.4 ©2022 LoRa Alliance ® Page 57 of 101 The authors reserve the right to change specifications without notice. 2.9 CN470-510 MHz Band 28 1088 Notes: 1089 - The CN470-510 channel plan has been significantly changed from prior 1090 revisions and should be considered experimental pending published 1091 documents confirming plan compliant devices have been granted local 1092 regulatory approval. 1093 - The original CN470 channel plan (i.e., 96-channel plan) defined in RP001- 1094 1.0.0 is still in widespread use. 1095 2.9.1 CN470-510 Preamble Format 1096 Refer to Section 4, "Physical Layer". 1097 2.9.2 CN470-510 Band Channel Frequencies 1098 In China, this band is defined by SRRC to be used for small scale networks covering civil 1099 metering applications in buildings, residential areas, and villages. The transmission time shall 1100 not exceed one second and is limited to one channel at a time. For interference mitigation, 1101 access to the physical medium requires a Listen Before Talk (LBT) with Adaptive Frequency 1102 Agility (AFA) transmission management or other similar mechanisms like channels 1103 blacklisting. 1104 Note: The limitation of scope to small-scale networks enters into effect 1105 after November 2021. Gateways and end-devices deployed prior to 1106 December 1, 2021 are not required to comply with this restriction. 1107 1108 In the areas where channels are used by China Broadcasting Services, they SHALL be 1109 disabled. 1110 For the CN470-510 MHz band, the bandwidth is the biggest and the frequency is the lowest 1111 compared to all the countries and areas in this document. The bandwidth and the frequency 1112 affect the design of antennas. There are several different antenna solutions for CN470-510 1113 MHz band. 1114 The CN470-510 MHz SRD band shall be divided into the channel plans as follows: 1115 • The channel plan for 20 MHz antenna (type A and B) 1116 • The channel plan for 26 MHz antenna (type A and B) 1117 20 common join channels are defined for all of the channel plans mentioned above: 1118 Common Join Channel Index UL (MHz) DL (MHz) Activate 20 MHz plan A Activate 20 MHz plan B Activate 26 MHz plan A Activate 26 MHz plan B 0 470.9 484.5 X 1 472.5 486.1 X 2 474.1 487.7 X 3 475.7 489.3 X 4 504.1 490.9 X 5 505.7 492.5 X 6 507.3 494.1 X 7 508.9 495.7 X 8 479.9 479.9 X 9 499.9 499.9 X 10 470.3 492.5 X 11 472.3 492.5 X 12 474.3 492.5 X 13 476.3 492.5 X 28 Heavily modified, and not backwardly compatible with, CN470-510 as previously defined in v1.0.