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Set Uplink Dwell Time

1. Introduction​

This chapter introduces how users can change the uplinkdwell time.

2. Default uplinkdwelltime​

Take AS923 frequency band as an example. We can see the spread spectrum factor corresponding to the data rate.

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The device default uplinkdwelltime=1, there are SF7, SF8, SF9 and SF10.

If users want to ues SF11 and SF12, they need to set uplinkdwelltime=0.

Users can use AT commands to set uplinkdwell time.

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3. Use AT command to set uplinkdwell time​

Since Dragino LoRaWAN Stack DR_LWS_005, user is able to set the uplink Dwelltime in AS923 and AU915 manual or use a application side downlink command to set it.

  • Use AT command: AT+DWELLT=0, set to Uplink Dwelltime=0.

  • Use AT command: AT+DWELLT=1, set to Uplink Dwelltime=1.

Or via application downlink command:

  • Downlink Payload: 0x2500, Set AT+DWELLT=0 to uplink.
  • Downlink Payload: 0x2501, Set AT+DWELLT=1 to uplink.