14.3 PingSlotChannelReq

  1. This command is sent by the server to the end-device to modify the frequency on which this
  2. end-device expects the downlink pings.

30

Octets 3 1
PingSlotChannelReq Frequency DrRange
Payload

31

  1. The Frequency coding is identical to the NewChannelReq MAC command defined in the
  2. Class A.
  3. Frequency is a 24bits unsigned integer. The actual ping channel frequency in Hz is 100 x
  4. frequ. This allows defining the ping channel anywhere between 100MHz to 1.67GHz by
  5. 100Hz step. The end-device has to check that the frequency is actually allowed by its radio
  6. hardware and return an error otherwise.
  7. A value of 0 instructs the end-device to use the default frequency plan.

©2016 LoRa™ Alliance Page 48 of 70

The authors reserve the right to change specifications without notice.

LoRaWAN Specification

  1. DrRange is the data rate range allowed on this channel. This byte is split in two 4-bit
  2. indexes.

3

Bits 7:4 3:0
DrRange Max data rate Min data rate

4

5 Following the convention defined in the LoRaWAN Regional Parameters document

  1. [PARAMS], the ―Min data rate‖ subfield designates the lowest data rate allowed on this
  2. channel. For example 0 designates DR0 / 125 kHz in the EU physical layer. Similarly ―Max
  3. data rate‖ designates the highest data rate. For example in the EU spec, DrRange = 0x77
  4. means that only 50 kbps GFSK is allowed on a channel and DrRange = 0x50 means that
  5. DR0 / 125 kHz to DR5 / 125 kHz are supported.
11 Upon reception of this command the end-device answers with a PingSlotFreqAns
12 message. The MAC payload of this message contains the following information:
13
Size (bytes) 1
pingSlotFreqAns Payload Status

14 The Status bits have the following meaning:

Bits 7:2 1 0
Status RFU Data rate range Channel
ok frequency ok
15
Bit = 0 Bit = 1
Data rate range ok The designated data rate The data rate range is
range exceeds the ones compatible with the
currently defined for this end possibilities of the end device
device, the previous range is
kept
Channel frequency ok The device cannot use this The device is able to use this
frequency, the previous ping frequency.
frequency is kept

results matching ""

    No results matching ""