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CRC Press eBooks

Emerging Advanced Technologies and Quantum Communication for Secure 6G Smart Cities

Renjth V. Ravi, Pushan Kumar Dutta

Published Oct 30, 2025• 1 citation
Publisher

Abstract

The evolution of 6G networks is set to revolutionize the concept of smart cities by enabling ultra-fast connectivity, ultra-reliable low-latency communication (URLLC), and enhanced security to meet the rising demand for intelligent urban services. As cities become increasingly interconnected, 6G will serve as the backbone of a security-focused ecosystem, integrating AI, blockchain, the Internet of Things (IoT), edge computing, and quantum communication to optimize service delivery, enhance automation, and ensure robust cybersecurity. This chapter explores the key components of an integrated 6G smart city infrastructure, evaluating how these emerging technologies contribute to the efficiency, reliability, and security of smart services. Future use cases, including intelligent transportation, advanced healthcare, and autonomous systems, are discussed, alongside the challenges and mitigation strategies for securing data-driven urban ecosystems. The study further examines cybersecurity threats associated with 6G networks, addressing concerns such as data privacy risks, AI-driven cyberattacks, and quantum-safe encryption mechanisms. By providing insights into cutting-edge communication and data protection techniques, this chapter contributes to a deeper understanding of technological advancements and their impact on the management and security of 6G-powered smart cities. The findings aim to support researchers, urban planners, and policymakers in building resilient, intelligent, and future-ready urban environments.

DOI
10.1201/9781003564645-27

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The evolution of 6G networks is set to revolutionize the concept of smart cities by enabling ultra-fast connectivity, ultra-reliable low-latency communication (URLLC), and enhanced security to meet the rising demand for intelligent urban services. As cities become increasingly interconnected, 6G will serve as the backbone of a security-focused ecosystem, integrating AI, blockchain, the Internet of Things (IoT), edge computing, and quantum communication to optimize service delivery, enhance automation, and ensure robust cybersecurity. This chapter explores the key components of an integrated 6G smart city infrastructure, evaluating how these emerging technologies contribute to the efficiency, reliability, and security of smart services. Future use cases, including intelligent transportation, advanced healthcare, and autonomous systems, are discussed, alongside the challenges and mitigation strategies for securing data-driven urban ecosystems. The study further examines cybersecurity threats associated with 6G networks, addressing concerns such as data privacy risks, AI-driven cyberattacks, and quantum-safe encryption mechanisms. By providing insights into cutting-edge communication and data protection techniques, this chapter contributes to a deeper understanding of technological advancements and their impact on the management and security of 6G-powered smart cities. The findings aim to support researchers, urban planners, and policymakers in building resilient, intelligent, and future-ready urban environments.
As we move toward the rollout of 6G networks, we're stepping into an era of groundbreaking technological advancements. These next-generation networks promise ultra-low latency and seamless integration with artificial intelligence (AI) and the Internet of Things (IoT), unlocking a new level of connectivity and performance. However, with these powerful capabilities come significant security challenges. Traditional encryption methods may not be enough to protect the complex and highly sensitive data traveling through 6G networks. One of the most promising solutions lies in Quantum Communication, particularly Quantum Key Distribution (QKD)-a method that leverages the laws of quantum mechanics to enable highly secure encryption. This paper explores the emerging security risks in both terrestrial and satellite communication channels and reviews current research on integrating quantum communication into 6G infrastructure. Special attention is given to its potential within the metaverse, a rapidly evolving digital environment that demands robust and future-proof security frameworks. Key areas of focus include-Addressing security vulnerabilities in quantum communication, Enhancing infrastructure to support quantum technologies, Reducing error rates in quantum protocols. the paper aims to propose a flexible, forward-looking framework designed to ensure fast, secure communication for critical sectors such as finance, defense, and healthcare.
The advent of 6G networks is expected to accelerate developments in fields like artificial intelligence, smart cities, autonomous technologies, and the Internet of Things (IoT) by providing remarkable connectivity, extremely fast speeds, and sophisticated data-driven services. The security flaws in these networks, however, also change with time, especially in light of the emerging threat of quantum computing, which has the potential to make the cryptographic techniques used today outdated. The importance of quantum cryptography (QC) in defending 6G systems against these kinds of quantum-era threats is highlighted in this section. The significance of post-quantum cryptography and Quantum Key Distribution (QKD) in providing extremely secure, nearly impenetrable encryption to protect the privacy and integrity of 6G communications is emphasized. The basic technology behind QC, how it integrates with 6G infrastructure, and the real-world difficulties of large-scale quantum-secure system deployment are also covered in the conversation. It also explores the impact of quantum-resistant algorithms, the hardware required to enable them, and the governmental actions necessary for widespread use. This part provides a thorough summary of the challenges and possibilities associated with safeguarding 6G networks for a future driven by quantum technology.
This book provides a comprehensive overview of security and privacy challenges in 6G networks, addressing the urgent need for advanced security frameworks as the next generation of wireless technology emerges. The rapid advancements in quantum computing, AI, and IoT are transforming the digital landscape, introducing both unprecedented opportunities and significant security threats. From AI-driven cyberattacks to the vulnerabilities of IoT devices, this book explores cutting-edge technologies such as quantum key distribution (QKD), post-quantum cryptography, and AI-enabled security systems. Designed for professionals and researchers, this resource outlines real-world applications of 6G security techniques, offering practical insights into protecting critical infrastructures, autonomous vehicles, smart cities, and more. By emphasizing a proactive approach to cybersecurity and fostering collaboration across industries, academia, and policymakers, the book lays out a roadmap for ensuring the resilience and trustworthiness of 6G networks in the future.
This research presents a modern framework that combine quantum computing and blockchain technologies to transform city management in provision for the 6G era. Quantum computing is recognized for its extraordinary processing power, while blockchain is known for its security, privacy, and transparency. these modern technologies can leverage from the 6G technologies capabilities like high speed, low latency, high bandwidth with giant connectivity. The idea of the study comes due to the few comprehensive standards and frameworks that facilitate the effective employment of these advanced technologies in the context of 6G. The proposed Quantum-Blockchain-6G (QBG) Framework main objective to leverage these emerging technologies with 6G capabilities to bridge the gap by providing the proper guidelines and framework to manage city management infrastructure with the help of efficient delivery of the required services. we used mixed method as interviews with expert, systematic literature review and case studies for this study to explore the challenges for integration of blockchain and quantum computing in 6g technology context and developed strategic framework for these challenges and evaluate its impact in the management activities in city management. This research will highlight critical challenges, relate to the quantum computing such as the complexity and cost and blockchain scalability. Furthermore, the study will investigate the integration the threads of advanced cryptographic measurement to mitigate quantum threats. This framework is precisely designed to empower cities management by utilizing the power of these emerging technologies that use 6G to meet the future connectivity demands in city management to make it smarter, faster, secure and trustworthy for the society.
As quantum computing advances, existing cryptographic techniques used in smart city infrastructures face increasing vulnerability, especially within internet of things (IoT) networks. This chapter explores the critical role of post-quantum cryptography (PQC) in securing urban IoT ecosystems against quantum threats while addressing sustainability challenges. It covers PQC principles, algorithm families, integration with IoT communication protocols, and the protection of critical sectors such as energy, healthcare, and transportation. The chapter also explores quantum-specific network attacks, supply chain vulnerabilities, and the role of green cryptography and AI-assisted security. Emphasis is placed on balancing quantum resilience with energy efficiency to ensure secure, scalable, and sustainable smart cities. The chapter concludes by identifying future research directions to guide the transition toward quantum-safe and eco-conscious urban infrastructure.
The rapid convergence of sixth-generation (6G) networks and the Internet of Things (IoT) offers enormous potential for ultra-reliable, low-latency, and massive device connectivity. However, this integration also raises security and privacy concerns, particularly in light of new threats from quantum computing that could undermine traditional cryptography. The architecture of quantum-safe IoT networks that can withstand post-quantum security threats is thoroughly discussed in this review. It addresses the challenges related to how to use blockchain technology to provide decentralized trust as well as secure transactions, how to use post-quantum cryptographic algorithms to protect data confidentiality, and the best way to use a trust management architecture to improve identity verification, authorization, and authentication in the diverse IoT environment. The paper then examines scalability considerations, resource constraints, and interoperability problems that impact safe IoT deployments in the 6G era. This work serves as a roadmap for researchers and practitioners who aim to create robust and future IoT infrastructure and then maintain their security in a post-quantum world by integrating recent research patterns, solution development, and considerations related to real-world implementation.