Issue link: https://read.uberflip.com/i/1540208
Regional Parameters RP002-1.0.5 ©2022-2025 LoRa Alliance ® Page 29 of 116 The authors reserve the right to change specifications without notice. 3.3 Default Settings 474 The following parameters are RECOMMENDED default values for all regions: 475 RECEIVE_DELAY1 1s RECEIVE_DELAY2 2s (SHALL be RECEIVE_DELAY1 + 1s) RX1DROffset 0 (table index) JOIN_ACCEPT_DELAY1 5s JOIN_ACCEPT_DELAY2 6s MAX_FCNT_GAP 16384 Note: MAX_FCNT_GAP was deprecated and removed from LoRaWAN 1.0.4 and subsequent versions. ADR_ACK_LIMIT 64 ADR_ACK_DELAY 32 RETRANSMIT_TIMEOUT 2s +/- 1s (random delay between 1 and 3 seconds) DownlinkDwellTime 0 (No downlink dwell time enforced; impacts data rate offset calculations) UplinkDwellTime Uplink dwell time is country-specific and it is the responsibility of the end-device to comply with such regulations PING_SLOT_PERIODICITY 7 (2^7 = 128s) PING_SLOT_DATARATE The value of the BEACON data rate (DR) defined for each regional band PING_SLOT_CHANNEL Defined in each regional band CLASS_B_RESP_TIMEOUT 8s Note: CLASS_B_RESP_TIMEOUT must always be greater than the largest possible value of RETRANSMIT_TIMEOUT plus the maximum possible time-on-air of an uplink frame. CLASS_C_RESP_TIMEOUT 8s Note: CLASS_C_RESP_TIMEOUT must always be greater than the largest possible value of RETRANSMIT_TIMEOUT plus the maximum possible time-on-air of an uplink frame. If the actual parameter values implemented in the end-device are different from these default 476 values (for example, the end-device uses a longer JOIN_ACCEPT_DELAY1 and 477 JOIN_ACCEPT_DELAY2 latency), those parameters SHALL be communicated to the 478 Network Server using an out-of-band channel during the end-device commissioning process. 479 The Network Server MAY reject parameters different from these default values. 480 RETRANSMIT_TIMEOUT was known as ACK_TIMEOUT in versions prior to 1.0.4 of the 481 LoRaWAN Link Layer specification. It is renamed in version 1.0.4 and subsequent versions of 482 the LoRaWAN Link Layer specification to better reflect its intended use. 483 Medium Access Control (MAC) commands exist in the LoRaWAN specification to change the 484 value of RECEIVE_DELAY1 (using RXTimingSetupReq, RXTimingSetupAns) as well as 485 ADR_ACK_LIMIT and ADR_ACK_DELAY (using ADRParamSetupReq, 486 ADRParamSetupAns). Also, RXTimingSettings are transmitted to the end-device along with 487 the JOIN_ACCEPT message in OTAA mode. 488