Issue link: https://read.uberflip.com/i/1507762
Enabling CSMA for LoRaWAN TR013-1.0.0 ©2023 LoRa Alliance ® Page 12 of 18 The authors reserve the right to change specifications without notice. 4.3 Recommended Parameters 338 339 Parameter Recommended Value Short Description DIFS 2 CADs Integer number of CADs to assess a clear channel BACKOFF_MAX 6 Integer limit of maximum possible number of backoff slots per frame. Use 0 to disable back-off or n to limit back- offs to n NumBackoff rand(1, BACKOFF_MAX) Integer number of back-off slots per frame. NumBackoff ∈ {1,2,3,4,5,BACKOFF_MAX} CADs MaxChanges application specific, e.g., 6. Integer limit of channel changes per frame AvailableCh N/A List of available channels that have not yet been transmitted on NumAvailableCh N/A Integer number of channels available in AvailableCh Table 1: Summary of parameters 340 Table 1 provides a summary of recommended values for the key parameters involved. It 341 should also be noted that the MaxChanges and BACKOFF_MAX parameters are 342 application-specific. Once the channels have changed MaxChanges number of times, the 343 end-device will lock into the already-set channel and transmit the frame using ALOHA. Also, 344 the application can utilize different BACKOFF_MAX values for prioritization (lower 345 BACKOFF_MAX means higher priority and vice versa). 346