空间信息网络路由算法与协议体系研究
发布时间：2019-02-22 07:54
【摘要】：随着航天技术的飞速发展,人们已经掌握了成熟的卫星控制技术,空间信息网络的广泛应用也给人们的生活带来了极大的便利。作为地面网络的延伸,它有着极大的发展空间,而由于其在军事领域的重要性,它已经成为各国在信息领域内最重要的发展方向之一。空间信息网络不同于传统地面网络,它具有传播时延大、链路误码率高、网络拓扑变化快、节点资源受限等特点,导致了链路无法长时间存在端到端路径。也正因此,传统地面网络的路由技术无法在空间信息网络中高效的运行。本文首先介绍了空间信息网络的概念、网络架构及其网络特点;然后分析了TCP/IP协议体系在空间信息网络中的局限性,并介绍了DTN协议体系以及CCSDS协议体系;之后对已有的空间信息网络路由算法进行分类,并指出现有算法的不足之处,提出了空间信息网络的最短时延路由算法,该算法充分利用链路的连通时序,计算出端到端的最短时延路径,并提高的算法的运算效率;针对Bundle标准协议进行适当修改,给出了具体的Bundle协议实现框架以及子模块的详细流程图;最后搭建空间信息网络实验平台,对本文提出的算法和Bundle协议进行测试,设置不同的场景,统计分析测试数据,证明了该算法和协议的可行性和高效性。
[Abstract]:With the rapid development of space technology, people have mastered the mature satellite control technology, and the wide application of space information network has brought great convenience to people's life. As an extension of the ground network, it has a great space for development, and because of its importance in the military field, it has become one of the most important development directions in the field of information. The spatial information network is different from the traditional terrestrial network. It has the characteristics of large propagation delay, high link error rate, fast network topology change and limited node resources, which leads to the link can not exist end-to-end path for a long time. Therefore, the traditional routing technology of terrestrial network can not run efficiently in spatial information network. This paper first introduces the concept, network architecture and network characteristics of spatial information network, then analyzes the limitations of TCP/IP protocol system in spatial information network, and introduces the DTN protocol system and CCSDS protocol system. After that, the existing routing algorithms of spatial information network are classified, and the shortcomings of the existing algorithms are pointed out, and the shortest delay routing algorithm of spatial information network is proposed, which makes full use of the connected time sequence of the link. The shortest end-to-end delay path is calculated and the computational efficiency of the algorithm is improved. According to the appropriate modification of Bundle standard protocol, the implementation framework of Bundle protocol and the detailed flow chart of the sub-module are given. Finally, the experiment platform of spatial information network is built, the algorithm and Bundle protocol proposed in this paper are tested, different scenarios are set up, and the test data are statistically analyzed, which proves the feasibility and high efficiency of the algorithm and protocol.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN927;V443.1
本文编号：2427994
[Abstract]:With the rapid development of space technology, people have mastered the mature satellite control technology, and the wide application of space information network has brought great convenience to people's life. As an extension of the ground network, it has a great space for development, and because of its importance in the military field, it has become one of the most important development directions in the field of information. The spatial information network is different from the traditional terrestrial network. It has the characteristics of large propagation delay, high link error rate, fast network topology change and limited node resources, which leads to the link can not exist end-to-end path for a long time. Therefore, the traditional routing technology of terrestrial network can not run efficiently in spatial information network. This paper first introduces the concept, network architecture and network characteristics of spatial information network, then analyzes the limitations of TCP/IP protocol system in spatial information network, and introduces the DTN protocol system and CCSDS protocol system. After that, the existing routing algorithms of spatial information network are classified, and the shortcomings of the existing algorithms are pointed out, and the shortest delay routing algorithm of spatial information network is proposed, which makes full use of the connected time sequence of the link. The shortest end-to-end delay path is calculated and the computational efficiency of the algorithm is improved. According to the appropriate modification of Bundle standard protocol, the implementation framework of Bundle protocol and the detailed flow chart of the sub-module are given. Finally, the experiment platform of spatial information network is built, the algorithm and Bundle protocol proposed in this paper are tested, different scenarios are set up, and the test data are statistically analyzed, which proves the feasibility and high efficiency of the algorithm and protocol.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN927;V443.1
【参考文献】
相关期刊论文 前1条
1 杨元喜;;北斗卫星导航系统的进展、贡献与挑战[J];测绘学报;2010年01期
，本文编号：2427994
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