基于社会活性和副本限制的DTN路由算法

发布时间：2018-02-04 23:47

本文关键词： 社会活性 DTN路由算法副本限制消息递交成功率　出处：《电子测量与仪器学报》2017年07期 　论文类型：期刊论文

【摘要】：容忍延迟网络(DTN)为提高消息传输成功率,往往采用多副本策略,导致网络消息泛洪现象,需要对消息副本进行限制。提出了一种基于社会活性和副本限制的DTN路由算法(social activity and copy-limited based DTN routing algorithm,SACRA),该算法基于节点运动历史轨迹和相邻节点特性定义社会活性,根据社会活性和可用缓冲区大小合理分配相遇节点携带消息的份额和交换消息类型,使消息加速扩散,能尽快到达目标节点。仿真结果表明,与典型的多副本DTN路由算法相比,SACRA能够有效降低了消息转发数和负载比率,当时间在1 000 s后成功率在50%以上,从而降低了网络开销,并获得较高的消息递交成功率。
[Abstract]:In order to improve the success rate of message transmission, delay tolerant network (DTNN) often adopts multi-replica strategy, which leads to the flooding of network messages. A DTN routing algorithm based on social activity and replica restriction is proposed. Social activity and copy-limited based DTN routing algorithm. SACRA, which defines social activity based on node motion history and adjacent node characteristics. According to the social activity and the available buffer size, the share of the messages carried by the encounter nodes and the types of messages exchanged can be allocated reasonably, so that the messages can spread quickly and reach the target nodes as soon as possible. The simulation results show that. Compared with the typical multi-replica DTN routing algorithm, it can effectively reduce the number of message forwarding and load ratio, and the success rate is more than 50% when the time is 1 000 s. Therefore, the network overhead is reduced and the success rate of message delivery is higher.
【作者单位】：湖南机电职业技术学院;合肥工业大学电气与自动化工程学院;
【基金】：国家杰出青年科学基金(50925727) 国防科技计划(C1120110004,9140A27020211DZ5102) 湖南省科技计划(2010J4,2011JK2023) 教育部科学技术研究重大项目(313018) 湖南省自然科学基金(2017JJ5028)资助项目
【分类号】：TN915.0
【正文快照】： 1引言容忍延迟网络(delay tolerant networks,DTN)是近年广受关注的一类新兴的网络体系结构,是由Kevin在2003年SIGCOMM国际会议上提出。能够在宽阔恶劣的条件下,实时收集大量翔实可靠的一手数据,被广泛应用于星际网络、无线车载网络、工业控制、环境监测、交通管理、国防军事

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