Document

LoRaWAN® Regional Parameters v1.0.3revA

Issue link: https://read.uberflip.com/i/1428359

Contents of this Issue

Navigation

Page 45 of 70

LoRaWAN 1.0.3 Regional Parameters ©2018 LoRa™ Alliance Page 46 of 71 The authors reserve the right to change specifications without notice. 1109 RX1DROffset 0 1 2 3 4 5 Upstream data rate Downstream data rate in RX1 slot DR0 DR0 DR0 DR0 DR0 DR0 DR0 DR1 DR1 DR0 DR0 DR0 DR0 DR0 DR2 DR2 DR1 DR0 DR0 DR0 DR0 DR3 DR3 DR2 DR1 DR0 DR0 DR0 DR4 DR4 DR3 DR2 DR1 DR0 DR0 DR5 DR5 DR4 DR3 DR2 DR1 DR0 Table 46: CN470-510 downlink RX1 data rate mapping 1110 1111 The allowed values for RX1DROffset are in the [0:5] range. Values in the range [6:7] are 1112 reserved for future use. 1113 2.7.8 CN470-510 Class B beacon 1114 The beacons are transmitted using the following settings: 1115 DR 2 Corresponds to SF10 spreading factor with 125kHz bw CR 1 Coding rate = 4/5 Signal polarity Non-inverted As opposed to normal downlink traffic which uses inverted signal polarity frequencies 508.3 to 509.7MHz with 200kHz steps Table 47 : CN470-510 beacon settings 1116 1117 The downstream channel used for a given beacon is: 1118 BeaconChannel = [ ( _ _ )] 8 1119 • whereby beacon_time is the integer value of the 4 bytes "Time" field of the beacon 1120 frame 1121 • whereby beacon_period is the periodicity of beacons , 128 seconds 1122 • whereby floor(x) designates rounding to the integer immediately inferior or equal to x 1123 1124 Example: the first beacon will be transmitted on 508.3Mhz, the second 1125 on 508.5MHz, the 9 th beacon will be on 508.3Mhz again. 1126 1127 1128 Beacon channel nb Frequency [MHz] 0 508.3 1 508.5 2 508.7 3 508.9 4 509.1 5 509.3 6 509.5 7 509.7 1129 1130 The beacon frame content is: 1131 Size (bytes) 3 4 2 7 1 2 BCNPayload RFU Time CRC GwSpecific RFU CRC

Articles in this issue

view archives of Document - LoRaWAN® Regional Parameters v1.0.3revA