基于节点属性和缓存管理的机会网络路由算法

An opportunistic networks routing protocol based on attributes of nodes and buffer management

由于机会网络中的节点移动性强,资源受限,设计高效的机会网络路由算法面临巨大挑战.目前已有的路由算法大多借助节点之间的相似性来提高算法的性能,而没有关注到节点之间的异构性,导致部分节点承担了过重的传输任务,从而影响了网络性能.以传统的PRoPHET路由算法为基础进行优化,提出了基于节点属性和缓存管理的机会网络路由算法(Opportunistic Routing Protocol based on Attributes of Nodes and Buffer Management,OANBM),该算法考虑节点的异构性,尽可能利用通信能力强的节点完成转发任务,并且加入缓存管理措施来降低网络负载.仿真结果表明:与经典机会网络路由算法相比,该算法的消息投递率可有效提升10%,而且大幅降低了网络负载率.

Due to the mobility of nodes and limited resources in opportunistic networks,designing an effective routing protocol for opportunistic networks is a great challenge.Most existing routing protocols rely on the similarity between nodes to improve the performance of the protocol,without paying attention to the heterogeneity.As a result,the network performance is reduced due to the heavy transmission tasks of some nodes.Based on the traditional PRoPHET routing protocol,this paper proposes an Opportunistic Routing Protocol based on Attributes of Nodes and Buffer Management(OANBM).Considering the heterogeneity of nodes,the proposed protocol uses nodes with strong communication ability to complete forwarding tasks as much as possible,and adds buffer management measures to reduce network load.The simulation results show that the message delivery rate of the protocol can be effectively increased by 10%compared with the classical opportunistic network routing protocol,and the network load rate is greatly reduced.