一种面向空间信息网的SCPS-NP QoS单播路由机制  

SCPS-NP QoS Unicast Routing Mechanism for Space Information Network

作　　者：董明[1] 王兴伟[2] 黄敏[3] 

机构地区：[1]东北大学信息技术研究院,沈阳110819 [2]东北大学计算机科学与工程学院,沈阳110819 [3]东北大学信息科学与工程学院,沈阳110819

出　　处：《小型微型计算机系统》2017年第7期1425-1429,共5页Journal of Chinese Computer Systems

基　　金：国家杰出青年科学基金项目(61225012;71325002)资助;国家自然科学基金项目(61572123)资助;辽宁省百千万人才工程项目(2013921068)资助

摘　　要：为满足空间通信的要求,空间数据系统咨询委员会制定了空间通信协议规范.在SCPS-NP协议的基础上,利用最短路径算法,设计一种点到点QoS单播路由机制.为适应卫星网络动态变化的特点,采用时隙划分的方式对空间信息网进行分析,建立了相应的节点模型和拓扑模型.利用本文设计的路由机制,综合考虑QoS满意度和服务定价满意度,在空间信息网中找到满足QoS的路径.将所设计的QoS路由机制在NS2平台进行仿真实现并对路由机制进行了性能评价.实验结果表明,设计的机制是可行和有效的,比基准机制性能更优.For the sake of space communications, the Consultative Committee for Space Data Systems （ CCSDS ） devises the standards of Space Communications Protocol Specification（SCPS）. We design a point-to-point QoS unicast routing mechanism using shortest path algorithm based on SCPS-NP in this thesis. To accommodate the dynamicity of satellite network, we provide an analysis in the light of time-slot division, and devise the corresponding node model and topology model. A path meeting the QoS demand can be selected in the space information network by taking into account both QoS and service pricing satisfaction degree and using our routing mechanism. We conduct a series of simulation on the NS2 platform to evaluate the performance of our proposed QoS routing mechanism. The experimental results show that our mechanism is not only feasible and effective,but also better than the benchmark mechanisms in performance.

关 键 词：空间信息网 SCPS—NP QOS路由 最短路径 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]