HQIOTA：基于 IOTA 的高质量共识机制

HQIOTA: high quality IOTA consensus mechanism

中文关键词  区块链  共识机制  有向无环图  IOTA

英文关键词  blockchain  consensus mechanism  directed acyclic graph  IOTA

中文摘要

      物联网应用(IOTA)作为一种经典的基于有向无环图而非链式结构的区块链系统, 由于采用置信度共识方 式导致交易确认依赖中心节点, 并且难以及时发现交易冲突. 为此, 本文提出一种基于时间切片的设计方法, 通过 规定在每个时间片结束时由内部节点检查并同步当前交易子图, 设计了一种high quality IOTA(HQIOTA)共识机制. 在交易确认中, 通过设计内部节点自适应调节控制替代了原有的外部规定阈值的转变. 进而能及时发现并删除矛盾 交易, 解决了交易冲突不敏感的问题. 本文基于概率分布模拟的网络环境进行实验, 结果表明HQIOTA能比IOTA更 快发现交易冲突并且更灵活地进行交易确认.

英文摘要

      Internet of things application (IOTA) is a classic blockchain system based on the directed acyclic graph rather than chain structure. Due to the adoption of confidence consensus, transaction confirmation depends on the central node and it is difficult to find conflicting transactions in time. Therefore, this paper proposes a design method based on time slice. It is specified that the current transaction subgraph is checked and synchronized by the internal node at the end of each time slice. A high quality IOTA (HQIOTA) consensus mechanism is designed. In the transaction confirmation, the adaptive control of internal nodes is designed to replace the transformation of the original external specified threshold. Then the contradictory transactions can be found and deleted in time, and the problem of being insensitive to conflicting transactions can be solved. In this paper, experiments are carried out in the network environment based on the probability distribution simulation. The results show that the HQIOTA can find transaction conflicts faster and confirm transactions more flexibly than IOTA.