社会感知的延迟容忍网络节点合作机制

摘要

To stimulate socially selfish nodes of a delay tolerant network (DTN) for cooperatively forwarding messages,a socially aware node cooperation mechanism (SANCM) for DTN was proposed.In SANCM,a currency reward scheme based on a probability increment in groups was proposed to stimulate the socially selfish nodes of different groups for cooperatively forwarding messages.Messages were effectively delivered by information sharing among these nodes in a group.Message migration was implemented by buffer cooperation among nodes in a group,thus increasing message delivery efficiency.The experimental results show that SANCM can effectively stimulate socially selfish nodes to cooperatively forward messages,thus achieving a higher message delivery success ratio with a lower delivery delay.%为促使延迟容忍网络中的社会自私节点合作转发消息,本文提出一种社会感知的延迟容忍网络节点合作机制(SANCM).SANCM通过基于组间概率增量的货币奖励策略来促使不同组的社会自私节点合作转发消息;通过组内节点的信息共享实现消息的有效传递;通过组内节点的缓存合作实现消息的迁移,进一步提高消息的传递效率.实验结果表明,SANCM能够有效促使社会自私节点合作转发消息,获得较高的消息传递成功率和较低的时延.