摘要
当前延迟容忍网络(DTN)数据拥塞控制相关成果整体控制效果和数据发送成功率性能待优化,本文提出将蚁群算法引入至空间延迟容忍网络中多链路数据拥塞控制。基于数据缓存占用整体状态,将空间延迟容忍网络中节点划分成非饱和与饱和节点。如果节点剩余缓存不能容纳单个数据,那么该节点属于饱和节点;相反则为非饱和节点。利用判断结果得到通信范围的各个节点状态,实时感知给定区域范围内数据拥塞情况。基于网络状态感知,引入蚁群算法,利用转发与复制数据分配方式构成空间延迟容忍网络路由方案,当副本的数量大于1时使用复制方案,反之通过转发方案判断转发数据包与否,通过双重控制方案,提高数据拥塞控制性能。考虑到空间延迟容忍网络中存在频繁断裂与间歇性连接的情况,提出相应路由维护策略。实验结果显示,所提算法能够很好地控制DTN数据拥塞,数据传送成功率也较高,具有可靠性。
The overall control effect of the current DTN data congestion control related results and the data transmission success rate performance are to be optimized. It is proposed to introduce the ant colony algorithm into the multi-link data congestion control in the spatial delay tolerant network. Based on the overall state of the data cache,the nodes in the spatial delay tolerant network are divided into unsaturated and saturated nodes. If the node’s remaining cache can not hold a single piece of data,then the node belongs to a saturated node;instead,it is an unsaturated node. The state of each node of the communication range is obtained by using the judgment result,and the data congestion in a given area is perceived in real time.Based on network state awareness,the ant colony algorithm is introduced to form a spatial delay tolerant network routing scheme by using the forwarding and copying data distribution method. When the number of replicas is greater than 1,the replication scheme is used,otherwise the forwarding scheme is used to determine whether to forward the data packet or not. The dual control solution can improve data congestion control performance. Considering the situation of frequent and intermittent connections in the network of spatial delay tolerance,a corresponding route maintenance strategy is proposed. The experimental results show that the proposed algorithm can control DTN data congestion well,and the data transmission success rate is high and reliable.
作者
张人杰
胡超
刘威
ZHANG Ren-jie;HU Chao;LIU Wei(School of Information Science and Engineering,Central South Universily,Changsha 410083,China;NetworkCenter,Hunan Post and Telecommunication College,Changsha 410015,China;Big Date Institute,Central South Universily,Changsha 410083,China;Key Laboratory of Medical Information Research of Hunan Province,Central South Universily,Changsha 410083,China;School of Geoscience and Info Physics,Central South Universilty,Changsha 410083,China)
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2020年第4期1472-1477,共6页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学基金项目(61977062)
教育部人文社会科学研究青年基金项目(17YJC880037)
湖南省教育厅科学研究项目(19C1369)
湖南邮电职业技术学院院级课题(18BZ05)。
关键词
信息处理
空间延迟
多链路
拥塞控制
information processing
spatial delay
many link
congestion control
