面向时空数据区块链的对等网络(P2P)通信机制

Peer-to-Peer(P2P)Communication Mechanism for Spatiotemporal Data Blockchain

在传统区块链中,节点与节点之间是对等的,区块链网络中的所有节点组成了一个全分布式非结构化的对等网络(P2P),即随机网络.节点之间采取泛洪的方式进行通信,泛洪通信机制存在单点信息爆炸、可控性差、容易形成泛洪循环等缺点,节点间通信效率低.针对这些缺点,本文在时空数据区块链网络中,依据节点类别及节点间的通信需求,基于chord算法提出了一种结构化的对等网络(P2P)通信机制——NC-chord.首先,确定网络中的节点类别以及不同节点间的通信需求;然后,依据不同节点间的通信需求在节点之间建立结构化通信网络,同时建立节点路由信息.实验表明,本文所提结构化P2P通信机制NC-chord在节点通信效率方面,较随机网络有了较大提升.

In the traditional blockchain,nodes are peer-to-peer with each other,and all nodes in the blockchain network form a fully distributed,unstructured per-to-per network(P2P)-random network.The nodes communicate with each other by flooding,but the flooding communication mechanism has drawbacks such as single-point information explosion,poor controllability,easy formation of flooding loops,and low communication efficiency among nodes.To address these drawbacks,a structured peer-to-peer network P2P communication mechanism,NC-chord,is proposed based on the chord algorithm in the spatiotemporal data blockchain network based on the node class and the communication needs between nodes.First,the classes of nodes in the network and the communication requirements between different nodes are determined;then,a structured communication network is established between nodes based on the communication requirements of different nodes,and node routing information is also established;finally,experiments show that the proposed structured P2P communication mechanism,NC-chord,has a large improvement in node communication efficiency compared with the random network.