The healthcare industry has witnessed significant transformations in e-health services where Electronic Health Records (EHRs) are transferred to mobile edge clouds to facilitate healthcare. Many edge cloud-based system designs have been proposed, but some technical challenges still remain, such as low quality of services (QoS), data privacy and system security due to centralized healthcare architectures. In this paper, we propose a novel hybrid approach of data offloading and data sharing for healthcare using edge cloud and blockchain. First, an efficient data offloading scheme is proposed where IoT health data can be offloaded to nearby edge servers for data processing with privacy awareness. Then, a data sharing scheme is integrated to enable data exchange among healthcare users via blockchain. Particularly, a trustworthy access control mechanism is developed using smart contracts for access authentication to achieve secure EHRs sharing. Implementation results from extensive real-world experiments show the superior advantages of the proposal over the existing schemes in terms of improved QoS, enhanced data privacy and security, and low smart contract costs.
翻译:保健行业在电子保健服务方面发生了重大转变,电子保健记录(EHRs)被转移到移动边缘云层,以便利保健工作;提出了许多以云为主的边缘系统设计,但仍存在一些技术挑战,如服务质量低(QOS)、数据隐私和中央保健结构导致的系统安全;在本文中,我们提出了利用边缘云和块链进行保健的数据卸载和数据共享的新混合方法;首先,提出了高效的数据卸载计划,将IoT保健数据卸载到附近的边缘服务器,以便进行保密处理;然后,将数据共享计划整合起来,使保健用户之间能够通过链条进行数据交换;特别是,正在利用智能的准入认证合同开发一个可信赖的准入控制机制,以便实现安全的EHR共享;广泛现实世界实验的实施结果表明,该提案在改进QOS、增强数据隐私和安全以及低智能合同成本方面比现有计划更有利。