Issue link: https://read.uberflip.com/i/1540208
Regional Parameters RP002-1.0.5 ©2022-2025 LoRa Alliance ® Page 93 of 116 The authors reserve the right to change specifications without notice. If the end-device will never operate with a repeater, the maximum application payload length 1910 in the absence of the OPTIONAL FOpts control field SHOULD be: 1911 1912 Data Rate M N 0 59 51 1 59 51 2 59 51 3 123 115 4 250 242 5 250 242 7 250 242 12 250 242 13 250 242 6, 8:11 and 14:15 Not defined Table 97: IN865 maximum payload size (not repeater compatible) 1913 3.12.7 IN865 Receive Windows 1914 By default, the RX1 receive window uses the same channel as the preceding uplink. The data 1915 rate is a function of the uplink data rate and the RX1DROffset, as given by the following 1916 table. The allowed values for RX1DROffset are in the [0:7] range and are encoded as per 1917 the table below. 1918 Values in the [6:7] range allow setting the downstream RX1 data rate higher than upstream 1919 data rate. End-devices that do not support DR7 SHALL NOT transmit uplinks using DR5 when 1920 Rx1DROffset is set to 7. The highlighted cell in Table 98indicate the uplink / downlink data 1921 rate combination, where operation is not possible for end-devices that only support data rates 1922 from DR0 to DR5. End-devices SHALL reject LinkADRReq commands, with a negative 1923 acknowledgment of DataRateACK, that set its uplink data rate such that its RX1 downlink 1924 data rate is not supported. End-devices SHALL reject RXParamSetupReq, with a negative 1925 acknowledgment of RX1DROffsetACK, that set its RX1DROffset value such that its RX1 1926 downlink data rate is not supported. End-devices that receive a value of RX1DROffset of 7 1927 as part of the Join-Accept frame SHALL select an initial uplink data rate that ensures its RX1 1928 downlink data rate is supported. 1929 1930 Uplink Data Rate Downlink Data Rate RX1DROffset 0 1 2 3 4 5 6 7 DR0 DR0 DR0 DR0 DR0 DR0 DR0 DR1 DR2 DR1 DR1 DR0 DR0 DR0 DR0 DR0 DR2 DR3 DR2 DR2 DR1 DR0 DR0 DR0 DR0 DR3 DR4 DR3 DR3 DR2 DR1 DR0 DR0 DR0 DR4 DR5 DR4 DR4 DR3 DR2 DR1 DR0 DR0 DR5 DR5 DR5 DR5 DR4 DR3 DR2 DR1 DR0 DR5 DR7 DR7 DR7 DR5 DR5 DR4 DR3 DR2 DR7 DR7 DR12 DR12 DR5 DR4 DR3 DR2 DR1 DR13 DR13 DR13 DR13 DR12 DR5 DR4 DR3 DR2 DR13 DR13 Table 98: IN865 downlink RX1 data rate mapping 1931 Note: DR7 is allowed in RX1 for IN865 since version RP2 1.0.0, in 1932 previous versions downlink data rate was limited to DR5 in RX1. 1933 The RX2 receive window uses a fixed frequency and data rate. The default parameters are 1934 866.550 MHz / DR2 (SF10, 125 kHz). 1935