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2021 ITU Kaleidoscope Academic Conference

7. CONCLUSION and direct revocation in iiot,” IEEE Transactions on
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overall network packet and guarantee a high level of system and T. Sato, “Secure artificial intelligence of things
security. Specific contributions are as follows. 1) We for implicit group recommendations,” IEEE Internet of
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the ledger-based integral transmission system in LPWAN.
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can well reduce the packet traffic in LPWAN and improve “A key management scheme for secure communications
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ACKNOWLEGEMENT
blockchain-empowered access control framework for
smart devices in green internet of things,” ACM Trans.
This research and development work was supported by
the MIC/SCOPE 205003002, “Certification System Using Internet Technol., vol. 21, no. 3, Jun. 2021. [Online].
Simplified LPWA based Distributed Ledger Technology”. Available: https://doi.org/10.1145/3433542
[12] N. Shi, L. Tan, W. Li, X. Qi, and K. Yu, “A
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