摘要
为提高机会网络性能,针对其社区的特性,提出一种基于群体信任的数据转发方法。将交互的两个社区抽象成两个节点,把复杂的多对多的信任关系转化为一对一的信任关系,计算社区间的群体信任度,将群体信任度与数据转发协议PROPHET相结合,选择群体信任度最高的社区,选取社区内综合交付能力最强的节点,进行数据转发。仿真结果表明,在网络中存在较多恶意节点的情况下,基于群体信任的数据转发方法更能有效防御黑洞攻击,提高网络性能。
To improve the performance of opportunistic network,according to the characteristics of community,a data forwarding method based on group trust was proposed.Two interacting communities were abstractly considered as two nodes,many-tomany trust relationships were converted into one-to-one trust relationship,and the group trust degree of the community was calculated.Group trust was integrated with data forwarding protocol PROPHET to select the community with highest group trust degree,and the node with highest comprehensive delivery competency in this community was selected to forward data.Simulations results show that the proposed method can more effectively defense the black hole attack and improve the network performance.
出处
《计算机工程与设计》
北大核心
2016年第10期2592-2596,2631,共6页
Computer Engineering and Design
基金
国家自然科学基金项目(61262089
61262087)
关键词
机会网络
信任
社区
群体信任
数据转发
opportunistic network
trust
community
group trust
data forwarding
