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LoRaWAN ® Fragmented Data Block Transport Specification TS004-2.0.0 ©2022 LoRa Alliance ® Page 20 of 32 The authors reserve the right to change specifications without notice. 6 Revisions 543 6.1 Revision 1.0.0 544 • LoRaWAN ® Fragmented Data Block Transport Specification v1.0.0 published 545 September 10, 2018 546 6.2 Revision 2.0.0 547 This revision of the document is version 2.0.0 548 • Clarification about NbFrag, session delete, normative keywords 549 • Add reboot delay 550 • New command: FragDataBlockReceivedReq breaks v1.0.0 compatibility (MIC + 551 AckReceptionBit) 552 • Security of fragmentation session 553 • Fragment index starts at 1 554 • FragSession is replaced only if FragSessionSetupReq is successful 555 • Clarifications about NbFragReceived and MissingFrag 556 • FEC algorithm optimization (breaks v1.0.0 compatibility) 557 • Editorial clean-up 558

• Cover
• 1 Conventions
• 2 Introduction
• 2.1 Definitions
• 3 Fragmented Data Block Transport Package
• 3.1 Package Version Commands (PackageVersionReq, PackageVersionAns)
• 3.2 Fragmentation Session Status Commands (FragSessionStatusReq, FragSessionStatusAns)
• 3.3 Fragmentation Session Setup Commands (FragSessionSetupReq, FragSessionSetupAns)
• 3.4 Fragmentation Session Delete Commands (FragSessionDeleteReq, FragSessionDeleteAns)
• 3.5 Fragmentation Data Block Received Commands (FragDataBlockReceivedReq, FragDataBlockReceivedAns)
• 3.6 Data Fragment Message (DataFragment)
• 4 Data Block Integrity Check and Authentication
• 5 Fragmentation Algorithms
• 6 Revisions
• 6.1 Revision 1.0.0
• 6.2 Revision 2.0.0
• 7 Glossary
• 8 Bibliography
• 8.1 References
• APPENDIX: Data Block Fragmentation Forward Error Correction Code
• A.1 Fragment Error Coding
• A.2 Fragment Decoding and Reassembly
• A.3 Performance of the Coding Scheme
• A.4 End-Device Memory Requirement
• A.5 Preliminary MATLAB Code