Issue link: https://read.uberflip.com/i/1540208
Regional Parameters RP002-1.0.5 ©2022-2025 LoRa Alliance ® Page 33 of 116 The authors reserve the right to change specifications without notice. 3.4 EU863-870 MHz Band 592 3.4.1 EU863-870 Preamble Format 593 Refer to Section 5, "Physical Layer". 594 3.4.2 EU863-870 Band Channel Frequencies 595 This section applies to any region where the radio spectrum use is defined by the ETSI 596 [EN300.220-2] standard. 597 The network channels can be freely attributed by the network operator. However, the three 598 following default channels SHALL be implemented in every EU863-870 end-device. Network 599 gateways SHALL be listening on one or more of these channels. 600 601 Modulation Bandwidth [kHz] Channel Frequency [MHz] LoRa DR / Bitrate Number of Channels Duty Cycle LoRa 125 868.10 868.30 868.50 DR0 to DR5 / 0.3-5 kbps 3 < 1% Table 8: EU863-870 default channels 602 In order to access the physical medium, the ETSI regulations impose some restrictions, such 603 as the maximum time the transmitter can be on, or the maximum time a transmitter can 604 transmit per hour. The ETSI regulations allow the choice of using either a duty-cycle limitation 605 or a so-called Listen Before Talk Adaptive Frequency Agility (LBT AFA) transmissions 606 management. The current LoRaWAN specification exclusively uses duty-cycled limited 607 transmissions to comply with the ETSI regulations. 608 EU868 end-devices SHALL be capable of operating in the 863 to 870 MHz frequency band 609 and SHALL feature a channel data structure to store the parameters of at least 24 channels. 610 A channel data structure corresponds to a frequency and a set of data rates usable on this 611 frequency. 612 The first three channels correspond to 868.1, 868.3, and 868.5 MHz / DR0 to DR5 and SHALL 613 be implemented in every end-device. For devices compliant with [TS001-1.0.x], those default 614 channels SHALL NOT be modified through the NewChannelReq command. For devices 615 compliant with [TS001-1.1.x] and beyond, these channels MAY be modified through 616 NewChannelReq command but SHALL be reset during the back-off procedure defined in 617 [TS001] to guarantee a minimal common channel set between end-devices and network 618 gateways. 619 The following table gives the list of frequencies that SHALL be used by end-devices to 620 broadcast the Join-Request message. The Join-Request message transmit duty-cycle SHALL 621 follow the rules described in chapter "Retransmissions back-off" of the LoRaWAN [TS001] 622 specification document. 623 624