What is it about?
This paper reviews how blockchain technology can be used in communication networks, including IoT, edge computing, multi-operator systems, and 5G/6G networks. It explains the main blockchain building blocks, such as consensus, cryptography, smart contracts, and governance, and shows how these can help solve practical networking problems. The review covers applications such as secure logs, identity and privacy management, roaming and settlement automation, resource trading, network slicing, and edge service coordination. It also presents a structured taxonomy and compares different blockchain deployment models, design choices, and performance trade-offs for communication-network settings.
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Why is it important?
This work is important because communication networks are becoming more distributed, more software-driven, and more dependent on cooperation across different operators and domains. Traditional centralised trust models can create bottlenecks, single points of failure, and limited auditability. This review helps clarify where blockchain provides real value and where it may not. It is especially useful because it goes beyond a general description of blockchain and connects blockchain mechanisms directly to telecom requirements such as low latency, multi-operator trust, automation, and compliance. The paper also highlights important open challenges, including scalability, energy overhead, interoperability, and regulation, while identifying future directions such as AI-assisted consensus, privacy-preserving accountability, and cross-chain orchestration for 5G/6G services.
Perspectives
What I find especially meaningful about this paper is that it treats blockchain not as a universal solution, but as a design option that must be evaluated carefully against real network requirements. In communication networks, the question is not simply whether blockchain is useful, but when it provides a genuine advantage over conventional databases and centralised systems. I like that this review tries to answer that question in a practical and structured way. I also think the topic is timely, because networking is moving toward more open, multi-domain, and service-oriented environments where trust, accountability, and automation matter more than ever. My hope is that this paper helps researchers and practitioners think more critically and constructively about where blockchain can realistically strengthen future communication infrastructures.
Dr Quazi Mamun
Charles Sturt University
Read the Original
This page is a summary of: Blockchain in Communication Networks: A Comprehensive Review, IET Blockchain, January 2026, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/blc2.70031.
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