欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
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．
英文摘要：
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.
同期刊论文项目
同项目期刊论文
期刊信息
位置：