LoRaWAN帧格式
2019-08-13 15:49:27 0 举报LoRaWAN帧格式
作者其他创作
大纲/内容
ADR
5
4 Bytes
CRC
1..0
2 bytes
MIC
MType
000:Join-request001:Join-accept010:Unconfirmed Data up011:Unconfirmed Data down100:Confirmed Data up101:Confirmed Data down110:Rejoin-request111:Proprietary
7..5
*Uplink only
Major:
MType:
PHDR_CRC
0~1 bytes
MHDR
Fopts
0~N bytes
FPENDING
FCtrl
1 byte
MACPayload
Join-Request or Rejoin-Request
N <= M-1-(length of FHDR in octets)M:maximum MAC payload length
3..0
FRMPayload
PHYPayload
6
DevAddr
Radio PHY layer
Major
FHDR
DownLink
RFU
PHDR
ClassB
ACK
4 bytes
Preamble
1 Byte
7~22 bytes
4
Fcnt
inserted by radio tranceiver
FPort
7~M bytes
00:LoRaWAN R101.11:RFU
7
FOptsLen
0~15 bytes
ADRACKReq
Join-Accept
4..2
UpLink
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