Towards Context-Aware Smart Contracts for Blockchain IoT Systems

Lovemore Ngwira, Mpyana Mwamba Merlec, Youn Kyu Lee, Hoh Peter In

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)


Context-awareness is very essential for blockchain-based IoT systems to guarantee successful system operations, even in presence of frequent external environment changes. However, current blockchain-based IoT solutions lack the adaptive ability required to accommodate external environment context changes during the system runtime. In this paper, we propose a context-aware smart contract system using rule-based reasoning for efficient energy consumption and environmental sustainability in blockchain-based IoT systems. Using smart contracts, the system collects contextual information, analyzes it by considering suitable control rules to perform required actions. To guarantee data authenticity and integrity, all transaction history and logs are stored in the blockchain-based distributed ledger for immutable data provenance evidence, accountability, and traceability. A smart grid home area network-based prototype was implemented on top of the Quorum blockchain to prove the feasibility of our concept. Besides, the performance evaluation of the experimental results shows that our system efficiently reduced energy consumption while maintaining environmental sustainability.

Original languageEnglish
Title of host publicationICTC 2021 - 12th International Conference on ICT Convergence
Subtitle of host publicationBeyond the Pandemic Era with ICT Convergence Innovation
PublisherIEEE Computer Society
Number of pages6
ISBN (Electronic)9781665423830
Publication statusPublished - 2021
Event12th International Conference on Information and Communication Technology Convergence, ICTC 2021 - Jeju Island, Korea, Republic of
Duration: 2021 Oct 202021 Oct 22

Publication series

NameInternational Conference on ICT Convergence
ISSN (Print)2162-1233
ISSN (Electronic)2162-1241


Conference12th International Conference on Information and Communication Technology Convergence, ICTC 2021
Country/TerritoryKorea, Republic of
CityJeju Island

Bibliographical note

Funding Information:
ACKNOWLEDGMENT This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT), No. NRF-2021R1A2C2012476.

Publisher Copyright:
© 2021 IEEE.


  • Blockchain
  • context-aware system
  • internet of things (IoT)
  • smart contract
  • smart grid home area network

ASJC Scopus subject areas

  • Information Systems
  • Computer Networks and Communications


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