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RP002-1.0.5 LoRaWAN Regional Parameters

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Regional Parameters RP002-1.0.5 ©2022-2025 LoRa Alliance ® Page 81 of 116 The authors reserve the right to change specifications without notice. When DownlinkDwellTime is zero, the allowed values for RX1DROffset are in the [0:7] 1639 range, encoded as per the following table. 1640 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 DR12 DR12 DR5 DR4 DR3 DR2 DR1 DR13 DR13 DR13 DR13 DR12 DR5 DR4 DR3 DR2 DR13 DR13 Table 74: AS923 downlink RX1 data rate mapping for DownLinkDwellTime = 0 1641 1642 When DownlinkDwellTime is one, the allowed values for RX1DROffset are in the [0:7] 1643 range, encoded as per the following table: 1644 Upstream Data Rate Downstream Data Rate RX1DROffset 0 1 2 3 4 5 6 7 DR0 DR2 DR2 DR2 DR2 DR2 DR2 DR2 DR2 DR1 DR2 DR2 DR2 DR2 DR2 DR2 DR2 DR3 DR2 DR2 DR2 DR2 DR2 DR2 DR2 DR3 DR4 DR3 DR3 DR2 DR2 DR2 DR2 DR2 DR4 DR5 DR4 DR4 DR3 DR2 DR2 DR2 DR2 DR5 DR6 DR5 DR5 DR4 DR3 DR2 DR2 DR2 DR6 DR7 DR6 DR6 DR5 DR4 DR3 DR2 DR2 DR7 DR7 DR7 DR7 DR6 DR5 DR4 DR3 DR2 DR7 DR7 DR12 DR12 DR5 DR4 DR3 DR2 DR2 DR13 DR13 DR13 DR13 DR12 DR5 DR4 DR3 DR2 DR13 DR13 Table 75: AS923 downlink RX1 data rate mapping for DownLinkDwellTime =1 1645 Note: DR6 and DR7 are allowed in RX1 for AS923 since version RP2 1646 1.0.0, in previous versions downlink data rate was limited to DR5 in RX1. 1647 The RX2 receive window uses a fixed frequency and data rate. The default parameters are 1648 923.2 MHz + AS923_FREQ_OFFSET_HZ / DR2 (SF10/125 kHz). 1649 3.10.8 AS923 Class B Beacon and Default Downlink Channel 1650 The beacon frame content is defined in Section 5.1.3. 18 1651 The default beacon data rate is DR3. 1652 The default beacon broadcast frequency is 923.4 MHz + AS923_FREQ_OFFSET_HZ. 1653 The default class B downlink ping-slot frequency is 923.4 MHz + AS923_FREQ_OFFSET_HZ. 1654 18 Prior to LoRaWAN 1.0.4, the AS923 beacon format was defined here as: Size (bytes) 2 4 2 7 2 BCNPayload RFU Time CRC GwSpecific CRC

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