This book investigates data security approaches in Heterogeneous Communications Networks (HCN). First, the book discusses the urgent need for a decentralized data management architecture in HCN. The book investigates preliminaries and related research to help readers obtain a comprehensive picture of the research topic. Second, the book presents three blockchain-based approaches for data management in HCN: data provenance, data query, and data marketing. Finally, based on the insights and experiences from the presented approaches, the book discusses future research directions.

• Discusses the need for decentralized data security approaches in heterogeneous communications networks (HCN);
• Presents solutions applicable and practical for real-world applications;

• Investigates HCN data security approaches such as reliable data provenance, transparent data query, and fair data marketing.

  Autorentext

  Dr. Dongxiao Liu received his B.S. and M.S. degree in School of Computer Science and Engineering, University of Electronic Science and Technology of China (UESTC), China in 2013 and 2016, respectively. He received the PhD degree in the Department of Electrical and Computer Engineering, University of Waterloo, Canada in 2020. Since 2020, he is a Postdoctoral Fellow in the Department of Electrical and Computer Engineering, University of Waterloo. His research interests include security and privacy in intelligent transportation systems, blockchain, and mobile networks. He has published over 40 journal and conference papers, including IEEE JSAC, IEEE TC, etc.

  Prof. Xuemin (Sherman) Shen is a University Professor with the Department of Electrical and Computer Engineering, University of Waterloo, Canada. His research focuses on network resource management, wireless network security, Internet of Things, 5G and beyond, and vehicular networks. Dr. Shen is a registered Professional Engineer of Ontario, Canada, a Canadian Academy of Engineering Fellow, a Royal Society of Canada Fellow, a Chinese Academy of Engineering Foreign Member, and a Distinguished Lecturer of the IEEE Vehicular Technology Society and Communications Society.

  Prof. Shen received "West Lake Friendship Award" from Zhejiang Province in 2023, President's Excellence in Research from the University of Waterloo in 2022, the Canadian Award for Telecommunications Research from the Canadian Society of Information Theory (CSIT) in 2021, the R.A. Fessenden Award in 2019 from IEEE, Canada, Award of Merit from the Federation of Chinese Canadian Professionals (Ontario) in 2019, James Evans Avant Garde Award in 2018 from the IEEE Vehicular Technology Society, Joseph LoCicero Award in 2015 and Education Award in 2017 from the IEEE Communications Society (ComSoc), and Technical Recognition Award from Wireless Communications Technical Committee (2019) and AHSN Technical Committee (2013). He has alsoreceived the Excellent Graduate Supervision Award in 2006 from the University of Waterloo and the Premier's Research Excellence Award (PREA) in 2003 from the Province of Ontario, Canada. He serves/served as the General Chair for the 6G Global Conference'23, and ACM Mobihoc'15, **Technical Program Committee Chair/Co-Chair for IEEE Globecom'24, 16 and 07, IEEE Infocom'14, IEEE VTC'10 Fall, and the Chair for the IEEE ComSoc Technical Committee on Wireless Communications. Prof. Shen is the President of the IEEE ComSoc. He was the Vice President for Technical & Educational Activities, Vice President for Publications, Member-at-Large on the Board of Governors, and Chair of the Distinguished Lecturer Selection Committee. Prof. Shen served as the Editor-in-Chief of the IEEE IoT JOURNAL, IEEE Network, and IET Communications.