Issue link: https://read.uberflip.com/i/1479525
LoRaWAN® Regional Parameters RP002-1.0.4 ©2022 LoRa Alliance ® Page 71 of 101 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 1414 in the absence of the OPTIONAL FOpts control field SHALL be: 1415 1416 Data Rate DwellTime=0 (No Limit) DwellTime=1 (400 ms Limit) M N M N 0 59 51 N/A N/A 1 59 51 N/A N/A 2 123 115 19 11 3 123 115 61 53 4 250 242 133 125 5 250 242 250 242 6 250 242 250 242 7 250 242 250 242 8:15 Not defined Not defined Table 62: AS923 maximum payload size (not repeater compatible) 1417 The end-device SHALL only enforce the maximum downlink MACPayload size defined for 1418 DownlinkDwellTime = 0 (no dwell time enforced) regardless of the actual setting. This 1419 prevents the end-device from discarding valid downlink messages that comply with the 1420 regulatory requirements that may be unknown to the device (for example, when the device is 1421 joining the network). 1422 2.10.7 AS923 Receive Windows 1423 By default, the RX1 receive window uses the same channel as the preceding uplink. The data 1424 rate is a function of the uplink data rate and the RX1DROffset, as given by the following 1425 table. The allowed values for RX1DROffset are in the [0:7] range. 1426 Values in the [6:7] range allow setting the downstream RX1 data rate higher than the upstream 1427 data rate 32 . 1428 When DownlinkDwellTime is zero, the allowed values for RX1DROffset are in the [0:7] 1429 range, encoded as per the following table. 1430 Upstream Data Rate Downstream 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 DR6 DR5 DR5 DR4 DR3 DR2 DR1 DR0 DR6 DR7 DR6 DR6 DR5 DR4 DR3 DR2 DR1 DR7 DR7 DR7 DR7 DR6 DR5 DR4 DR3 DR2 DR7 DR7 Table 63: AS923 downlink RX1 data rate mapping for DownLinkDwellTime = 0 1431 1432 1433 32 DR6 and DR7 are allowed in RX1 for AS923 since version RP2 1.0.0, in previous versions downlink data rate was limited to DR5 in RX1.