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Future Internet 2017, 9(4), 85; https://doi.org/10.3390/fi9040085

Blockchain-Empowered Fair Computational Resource Sharing System in the D2D Network

Department of Electrical and Computer Engineering, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada
Z. Hong, Z.Wang,W. Cai and V. C. M. Leung, “Connectivity-Aware Task Outsourcing and Scheduling in D2D Networks”, 2017 26th International Conference on Computer Communication and Networks (ICCCN), Vancouver, BC, Canada, 31 July–3 August 2017; pp. 1–9.
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Received: 8 October 2017 / Revised: 12 November 2017 / Accepted: 14 November 2017 / Published: 17 November 2017
(This article belongs to the Special Issue Recent Advances in Cellular D2D Communications)
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Abstract

Device-to-device (D2D) communication is becoming an increasingly important technology in future networks with the climbing demand for local services. For instance, resource sharing in the D2D network features ubiquitous availability, flexibility, low latency and low cost. However, these features also bring along challenges when building a satisfactory resource sharing system in the D2D network. Specifically, user mobility is one of the top concerns for designing a cooperative D2D computational resource sharing system since mutual communication may not be stably available due to user mobility. A previous endeavour has demonstrated and proven how connectivity can be incorporated into cooperative task scheduling among users in the D2D network to effectively lower average task execution time. There are doubts about whether this type of task scheduling scheme, though effective, presents fairness among users. In other words, it can be unfair for users who contribute many computational resources while receiving little when in need. In this paper, we propose a novel blockchain-based credit system that can be incorporated into the connectivity-aware task scheduling scheme to enforce fairness among users in the D2D network. Users’ computational task cooperation will be recorded on the public blockchain ledger in the system as transactions, and each user’s credit balance can be easily accessible from the ledger. A supernode at the base station is responsible for scheduling cooperative computational tasks based on user mobility and user credit balance. We investigated the performance of the credit system, and simulation results showed that with a minor sacrifice of average task execution time, the level of fairness can obtain a major enhancement. View Full-Text
Keywords: D2D communication; blockchain; fairness; connectivity-aware D2D communication; blockchain; fairness; connectivity-aware
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Hong, Z.; Wang, Z.; Cai, W.; Leung, V.C.M. Blockchain-Empowered Fair Computational Resource Sharing System in the D2D Network. Future Internet 2017, 9, 85.

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