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Blockchain Based Decentralized and Proactive Caching Strategy in Mobile Edge Computing Environment.

Jingpan Bai1, Silei Zhu1, Houling Ji1

  • 1School of Computer Science, Yangtze University, Jingzhou 434023, China.

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Summary
This summary is machine-generated.

A novel blockchain-based strategy enhances mobile edge computing (MEC) by improving decentralized security data caching. This proactive caching approach optimizes node utility, reducing latency and boosting cache hit rates in intelligent IoT environments.

Keywords:
blockchaincachingdecentralizationmobile edge computingsmart contract

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Area of Science:

  • Mobile Edge Computing (MEC)
  • Blockchain Technology
  • Internet of Things (IoT) Security

Background:

  • Edge caching in MEC is crucial for timely data response in intelligent scenarios.
  • Limited edge node storage and malicious behavior pose challenges for decentralized security data caching.
  • Existing caching strategies struggle with the trade-offs between cache space, node utility, and latency.

Purpose of the Study:

  • To propose a blockchain-based decentralized and proactive caching strategy for MEC environments.
  • To address challenges in selecting cached content and ensuring secure data caching.
  • To optimize caching decisions based on node utility while managing trade-offs.

Main Methods:

  • Developed a proactive caching strategy leveraging blockchain for a secure MEC environment.
  • Formulated an optimization problem for the caching strategy based on node utility.
  • Employed linear relaxation and the interior point method to achieve optimal caching strategies.
  • Utilized an offline consensus authentication method to mitigate blockchain consensus delay.

Main Results:

  • The proposed algorithm significantly reduces latency and ensures secure data caching.
  • Achieved up to 49.32% improvement in cache hit rate compared to random caching.
  • Demonstrated up to 43.11% reduction in average content response latency.
  • Showcased up to 34.85% increase in average system utility over random caching.

Conclusions:

  • The blockchain-based decentralized proactive caching strategy effectively enhances MEC performance.
  • The approach successfully balances cache space, node utility, and latency.
  • Simulation results validate the algorithm's superiority over existing methods in IoT environments.