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TR007 Developing LoRaWAN® Devices © 2021 LoRa Alliance® Page 3 of 26 The authors reserve the right to change specifications without notice. Contents 64 Contents ............................................................................................................................... 3 65 Tables ................................................................................................................................... 5 66 1 Introduction .................................................................................................................. 6 67 1.1 Conventions ............................................................................................................. 6 68 2 Provisioning ................................................................................................................. 7 69 2.1 Introduction .............................................................................................................. 7 70 2.2 Extended-Unique-Identifier (EUI) ............................................................................. 7 71 2.3 Device Address (DevAddr) ....................................................................................... 7 72 2.4 Security Keys ........................................................................................................... 8 73 2.5 OTAA Device Provisioning ....................................................................................... 8 74 2.5.1 Device EUI (DevEUI) .......................................................................................... 8 75 2.5.2 JoinEUI .............................................................................................................. 8 76 2.5.3 Root Key(s) ........................................................................................................ 9 77 2.6 ABP Devices .......................................................................................................... 10 78 2.6.1 DevAddr ........................................................................................................... 10 79 2.6.2 Session Keys ................................................................................................... 10 80 2.6.3 Physical Provisioning........................................................................................ 11 81 3 LoRaWAN Protocol Stack .......................................................................................... 12 82 3.1 Join Procedure ....................................................................................................... 12 83 3.1.1 Description ....................................................................................................... 12 84 3.1.2 Recommended Practice ................................................................................... 12 85 3.2 Fixed Channel Plan Join Process Optimization ...................................................... 12 86 3.2.1 Description ....................................................................................................... 12 87 3.2.2 Recommended Practice ................................................................................... 12 88 3.3 Detecting Loss of Network Connectivity ................................................................. 13 89 3.3.1 Description ....................................................................................................... 13 90 3.3.2 Recommended Practice ................................................................................... 13 91 3.4 Reacting to Loss of Network Connectivity .............................................................. 14 92 3.4.1 Description ....................................................................................................... 14 93 3.4.2 Recommended Practice ................................................................................... 14 94 3.5 Rolling Session Keys ............................................................................................. 15 95 3.5.1 Description ....................................................................................................... 15 96

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