There were two strategies for the data forwarding in the content-centric networking(CCN): forwarding strategy and routing strategy. Forwarding strategy only considered a separated node rather than the whole network pe...There were two strategies for the data forwarding in the content-centric networking(CCN): forwarding strategy and routing strategy. Forwarding strategy only considered a separated node rather than the whole network performance, and Interest flooding led to the network overhead and redundancy as well. As for routing strategy in CCN, each node was required to run the protocol. It was a waste of routing cost and unfit for large-scale deployment.This paper presents the super node routing strategy in CCN. Some super nodes selected from the peer nodes in CCN were used to receive the routing information from their slave nodes and compute the face-to-path to establish forwarding information base(FIB). Then FIB was sent to slave nodes to control and manage the slave nodes. The theoretical analysis showed that the super node routing strategy possessed robustness and scalability, achieved load balancing,reduced the redundancy and improved the network performance. In three topologies, three experiments were carried out to test the super node routing strategy. Network performance results showed that the proposed strategy had a shorter delay, lower CPU utilization and less redundancy compared with CCN.展开更多
近年来区块链发展迅速,交易频率低成为限制区块链进一步发展的障碍。闪电网络作为解决区块链交易频率问题的最优解决方案之一,具有确认时间短、费用低的优点;但也存在着通道容量低、路由代价大、通道易发生拥堵的问题。现有优化方案多...近年来区块链发展迅速,交易频率低成为限制区块链进一步发展的障碍。闪电网络作为解决区块链交易频率问题的最优解决方案之一,具有确认时间短、费用低的优点;但也存在着通道容量低、路由代价大、通道易发生拥堵的问题。现有优化方案多是采用第三方托管,延长交易等待时间,但不能从根源解决通道拥堵问题。针对上述问题,文中提出了一种新的闪电网络优化方案。首先在闪电网络内设置超级节点,并赋予超级节点代币用于相互构建通道,用户通过Ethereum Request for Comment标准将比特币转化为代币进入闪电网络;其次提出逃逸值概念,用户节点通过逃逸值计算选择加入一个超级节点;最后改进landmark算法对网络通道进行修剪,提升网络可扩展性,解决通道拥堵问题。仿真结果表明,此方案对闪电网络内交易量较大时的网络拥堵、路径寻优时间长等问题有良好效果。展开更多
基金Supported by the National Basic Research Program of China("973"Program,No.2013CB329100)Beijing Higher Education Young Elite Teacher Project(No.YETP0534)
文摘There were two strategies for the data forwarding in the content-centric networking(CCN): forwarding strategy and routing strategy. Forwarding strategy only considered a separated node rather than the whole network performance, and Interest flooding led to the network overhead and redundancy as well. As for routing strategy in CCN, each node was required to run the protocol. It was a waste of routing cost and unfit for large-scale deployment.This paper presents the super node routing strategy in CCN. Some super nodes selected from the peer nodes in CCN were used to receive the routing information from their slave nodes and compute the face-to-path to establish forwarding information base(FIB). Then FIB was sent to slave nodes to control and manage the slave nodes. The theoretical analysis showed that the super node routing strategy possessed robustness and scalability, achieved load balancing,reduced the redundancy and improved the network performance. In three topologies, three experiments were carried out to test the super node routing strategy. Network performance results showed that the proposed strategy had a shorter delay, lower CPU utilization and less redundancy compared with CCN.
文摘近年来区块链发展迅速,交易频率低成为限制区块链进一步发展的障碍。闪电网络作为解决区块链交易频率问题的最优解决方案之一,具有确认时间短、费用低的优点;但也存在着通道容量低、路由代价大、通道易发生拥堵的问题。现有优化方案多是采用第三方托管,延长交易等待时间,但不能从根源解决通道拥堵问题。针对上述问题,文中提出了一种新的闪电网络优化方案。首先在闪电网络内设置超级节点,并赋予超级节点代币用于相互构建通道,用户通过Ethereum Request for Comment标准将比特币转化为代币进入闪电网络;其次提出逃逸值概念,用户节点通过逃逸值计算选择加入一个超级节点;最后改进landmark算法对网络通道进行修剪,提升网络可扩展性,解决通道拥堵问题。仿真结果表明,此方案对闪电网络内交易量较大时的网络拥堵、路径寻优时间长等问题有良好效果。
