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西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西 西安 710071
[ "王鹏(1995-),男,河南济源人,西安电子科技大学硕士生,主要研究方向为空间信息网络。" ]
[ "李红艳(1966-),女,陕西西安人,博士,西安电子科技大学教授、博士生导师,主要研究方向为空间信息网络、无线网络、移动自组织网络。" ]
[ "张焘(1992-),男,福建三明人,西安电子科技大学博士生,主要研究方向为空间信息网络。" ]
[ "李朋云(1995-),女,河北保定人,西安电子科技大学硕士生,主要研究方向为空间信息网络。" ]
网络出版日期:2017-10,
纸质出版日期:2017-10-25
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王鹏, 李红艳, 张焘, 等. 基于时间聚合图的DTN网络最短时延路由算法[J]. 通信学报, 2017,38(Z1):1-8.
Peng WANG, Hong-yan LI, Tao ZHANG, et al. Minimum delay algorithm based on time aggregated graph in DTN network[J]. Journal on communications, 2017, 38(Z1): 1-8.
王鹏, 李红艳, 张焘, 等. 基于时间聚合图的DTN网络最短时延路由算法[J]. 通信学报, 2017,38(Z1):1-8. DOI: 10.11959/j.issn.1000-436x.2017228.
Peng WANG, Hong-yan LI, Tao ZHANG, et al. Minimum delay algorithm based on time aggregated graph in DTN network[J]. Journal on communications, 2017, 38(Z1): 1-8. DOI: 10.11959/j.issn.1000-436x.2017228.
DTN(delay tolerant network)网络时变特征导致静态网络的路由算法无法求解该网络中给定业务的快速传输问题。时变路由算法CGR (contact graph routing)利用链路最早连通时段获得最短路径,由于连通时段先后顺序影响导致其算法链路利用率低下。针对该问题,对端到端最短路径的路由方法进行了研究,在时间聚合图中增加节点缓存时间序列表征同一链路不同时间段之间的联系,采用深度优先搜索从目的点向源节点反向找路,求解出已知业务需求端到端最短时延算法。用样例证明了算法的可行性。
The DTN network has the characteristics of dynamic topology change
thus the routing algorithm of static network can not solve the routing problem of time-varying network
and can not support fast transmission of given tasks.The existing time-variant routing algorithm CGR (contact graph routing) uses the earliest contact to obtain the shortest path
but because of the influence of the order of the connectivity period
the CGR algorithm has low link utilization.To solve this problem
the method of finding the shortest path was proposed.Besides
in order to characterize the relation between the different connect periods of the same link
the time series of node cache was added to the time aggregated graph.Based on this
the end-to-end multi-path shortest delay routing algorithm for the known task requirements was proposed.Finally
the feasibility of the algorithm was proved by an example.
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