User-centric In-network Caching Mechanism for Off-chain Storage with Blockchain
User-centric In-network Caching Mechanism for Off-chain Storage with Blockchain
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DOI：
10.1109/icc45855.2022.9838289
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发表时间：
2022-05
期刊：
影响因子：
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通讯作者：
Hiroaki Yamanaka;Y. Teranishi;Yusaku Hayamizu;Atsushi Ooka;K. Matsuzono;Ruidong Li;H. Asaeda
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文献类型：
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作者：
Hiroaki Yamanaka;Y. Teranishi;Yusaku Hayamizu;Atsushi Ooka;K. Matsuzono;Ruidong Li;H. Asaeda
利用链下存储降低链上存储成本，进一步增强区块链技术的可扩展性。对于这种机制，大规模的交易数据存储在外部集中式数据库或分布式点对点存储中，而不是区块链节点本身。然而，在新兴的区块链应用领域，如医疗保健和物联网（IoT），链下数据应该位于具有正确权限的用户附近，但目前将数据定位在这些用户附近并相应地限制数据传输具有挑战性。为了应对这些挑战，我们设计了一个以用户为中心的网内缓存机制（UCINC）的链下存储与信息为中心的网络（ICN）的方法来调节数据缓存到用户所在的网络中的链下存储。使用UCINC，数据基于位置属性缓存在链下存储中，通过兴趣/数据ICN范式检索，并且用户的访问权限基于其属性（包括位置）确定。我们还进行了模拟实验，以确认所提出的UCINC实现更高的下载性能和流量效率，与现有的链下存储机制相比。
Off-chain storage is utilized to reduce on-chain storage costs, and further enhance the scalability of blockchain technology. For such mechanisms, transaction data of large size is stored in external centralized databases or distributed peer-to-peer storage, instead of blockchain nodes themselves. However, in emerging blockchain application areas, such as healthcare and the Internet of Things (IoT), off-chain data should be located close to the users with the right privileges, yet it is currently challenging to locate data close to such users and limit data transfers accordingly. To meet these challenges, we design a user-centric in-network caching mechanism for off-chain storage (UCINC) with information-centric networking (ICN) approach to regulate the data caching to the off-chain storage in the network where users are located. With UCINC, data is cached at off-chain storage based on location attributes, retrieved through the interest/data ICN paradigm, and users’ access privileges are determined based on their attributes including locations. We furthermore conduct simulation experiments to confirm that the proposed UCINC achieves higher download performance and traffic efficiency, compared with the existing off-chain storage mechanisms.