Issue link: https://read.uberflip.com/i/1540208
Regional Parameters RP002-1.0.5 ©2022-2025 LoRa Alliance ® Page 104 of 116 The authors reserve the right to change specifications without notice. Data Rate LDRO Parameter Status BW125, SF5 to SF10 0 Disabled BW125, SF11 and SF12 1 Enabled BW250, SF5 to SF11 0 Disabled BW250, SF12 1 Enabled BW500, SF5 to SF12 0 Disabled Table 113: LoRa physical layer settings for LDRO 2121 5.1.3 Class B Beacon Frame Content 2122 The beacon payload BCNPayload consists of a network common part and an OPTIONAL 2123 gateway-specific part. The size of the RFU fields for each part depend on the LoRa spreading 2124 factor used to send the beacon. The length is adjusted to fit LoRa modulation interleaving 2125 blocks, so that the network common part and gateway-specific part are carried by different 2126 portions of the radio packet. In addition, each part has an independent CRC. As a result, it is 2127 possible to receive correctly and detect the correct reception of the network common part, 2128 even if several gateways transmit concurrently a beacon with different gateway-specific parts. 2129 In that situation, the gateway-specific part will likely not be received correctly, and this will be 2130 detected by the CRC. 2131 2132 BCNPayload Size (Octets) Common Gateway-Specific RFU Param Time CRC GwSpecific RFU CRC SF 8 BW125/BW500 1 4 2 7 3 2 SF 9 BW125/BW500 1 1 4 2 7 0 2 SF 10 BW125/BW500 2 1 4 2 7 1 2 SF 11 BW500 3 1 4 2 7 2 2 SF 12 BW500 4 1 4 2 7 3 2 Table 114: Beacon frame content 2133 2134 With Network Common Part Only With Network Common + Gateway-Specific Parts SF8 – 125KHz 55.8 ms 86.5 ms SF9 – 125KHz 111.6 ms 152.6 ms SF10 – 125KHz 223.2 ms 305.2 ms SF8 – 500KHz 14.0 ms 21.6 ms SF9 – 500KHz 27.9 ms 38.1 ms SF10 – 500KHz 55.8 ms 76.3 ms SF11 – 500KHz 111.6 ms 152.6 ms SF12 – 500KHz 223.2 ms 305.2 ms Table 115: Beacon time-on-air 2135 2136 2137