How does CSMA/CA affect the performance and security in wireless blockchain networks

Cao, B., Li, M., Zhang, L. , Li, Y. and Peng, M. (2019) How does CSMA/CA affect the performance and security in wireless blockchain networks. IEEE Transactions on Industrial Informatics, (doi:10.1109/TII.2019.2943694) (Early Online Publication)

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Abstract

The impact of communication transmission delay on the original blockchain, has not been well considered and studied since it is primarily designed in stable wired communication environment with high communication capacity. However, in a wireless scenario, due to the scarcity of spectrum resource, a blockchain user may have to compete for wireless channel to broadcast transactions following Media Access Control (MAC) mechanism. As a result, the communication transmission delay may be significant and pose a bottleneck on the blockchain system performance and security. To facilitate blockchain applications in wireless Industrial Internet of Things (IIoT), this paper aims to investigate whether the widely used MAC mechanism, Carrier Sense Multiple Access/Collision Avoidance (CSMA/CA), is suitable for Wireless Blockchain Networks (WBN) or not. Based on tangle, as an example to analyze the system performance in term of confirmation delay, Transaction Per Second (TPS) and transaction loss probability by considering the impact of queueing and transmission delay caused by CSMA/CA. Next, a stochastic model is proposed to analyze the security issue taking into account the malicious double-spending attack. Simulation results provide valuable insights when running blockchain in wireless network, the performance would be limited by the traditional CSMA/CA protocol. Meanwhile, we demonstrate that the probability of launching a successful double-spending attack would be affected by CSMA/CA as well.

Item Type:Articles
Status:Early Online Publication
Refereed:Yes
Glasgow Author(s) Enlighten ID:Zhang, Dr Lei
Authors: Cao, B., Li, M., Zhang, L., Li, Y., and Peng, M.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:IEEE Transactions on Industrial Informatics
Publisher:IEEE
ISSN:1551-3203
ISSN (Online):1941-0050
Published Online:25 September 2019
Copyright Holders:Copyright © 2019 IEEE
First Published:First published in IEEE Transactions on Industrial Informatics 2019
Publisher Policy:Reproduced in accordance with the publisher copyright policy

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