通信学报 ›› 2020, Vol. 41 ›› Issue (10): 116-129.doi: 10.11959/j.issn.1000-436x.2020188

• 学术论文 • 上一篇    下一篇

基于时变图的天地一体化网络时间确定性路由算法与协议

李红艳1,张焘2,张靖乾1,史可懿1,曾鹏程1   

  1. 1 西安电子科技大学通信工程学院,陕西 西安 710071
    2 中国电信福建分公司网络运营支撑中心,福建 福州 350001
  • 修回日期:2020-08-06 出版日期:2020-10-25 发布日期:2020-11-05
  • 作者简介:李红艳(1966- ),女,陕西西安人,博士,西安电子科技大学教授,主要研究方向为时间确定性网络、天地一体化网络、新一代无线局域网、时变图技术等|张焘(1992- ),男,福建三明人,博士,中国电信福建分公司网络运营支撑中心员工,主要研究方向为天地一体化网络、时变图理论、卫星网络路由、时间确定性网络协议|张靖乾(1997- ),男,陕西西安人,西安电子科技大学硕士生,主要研究方向为卫星网络路由、网络协议仿真|史可懿(1995- ),男,陕西汉中人,西安电子科技大学博士生,主要研究方向为时变图理论、天地一体化网络路由算法|曾鹏程(1994- ),男,湖南邵阳人,西安电子科技大学硕士生,主要研究方向为卫星网络路由、时间确定性网络协议
  • 基金资助:
    国家自然科学基金资助项目(61931017);国家自然科学基金资助项目(61871456);国家自然科学基金资助项目(91638202);国家科技重大专项基金资助项目(2015ZX03002006);“111”计划基金资助项目(B08038);陕西省自然科学基础研究计划基金资助项目(2016JQ6054)

Time deterministic routing algorithm and protocol based on time-varying graph over the space-ground integrated network

Hongyan LI1,Tao ZHANG2,Jingqian ZHANG1,Keyi SHI1,Pengcheng ZENG1   

  1. 1 School of Telecommunications Engineering,Xidian University,Xi’an 710071,China
    2 Network Operation Center of China Telecom Fujian Branch,Fuzhou 350001,China
  • Revised:2020-08-06 Online:2020-10-25 Published:2020-11-05
  • Supported by:
    The National Natural Science Foundation of China(61931017);The National Natural Science Foundation of China(61871456);The National Natural Science Foundation of China(91638202);The National Science and Technology Major Project of China(2015ZX03002006);The 111 Project(B08038);The Natural Science Basic Research Plan in Shaanxi Province(2016JQ6054)

摘要:

针对天地一体化网络时变多维资源与差异多样化业务导致网络端到端时延难保障、网络资源利用率难提升等问题,提出基于时变图的天地一体化网络时间确定性路由算法及协议。构建时变连续图模型,用于表征天地一体化网络时变拓扑、链路连通时段、节点缓存等多维资源的时空属性;提出面向业务的时间确定性路由算法,依据链路累积流量计算规则、节点流守恒约束与节点缓存约束,构建具有时间属性的最短时延路径;将所提路由算法与分段路由(SR)技术以及时间敏感网络(TSN)技术相结合,设计具有时延保障的时间确定路由协议,支持时变网络环境中拓扑发现、确定性路由的高效计算以及分组的定时转发。仿真结果表明,通过关联利用链路资源与节点存储资源,与基于快照图和接触图的路由算法相比,所提路由算法的链路资源利用率高、分组成功投递率高,保障了业务的端到端传输时延。

关键词: 天地一体化网络, 时变图, 时间确定性路由算法, 路由协议, 资源按需分配

Abstract:

In terms of the difficulties to construct the end-to-end path and improve the utilization of network resources,caused by the time-varying multi-dimensional resources and diverse services over the space-ground integrated networks,the time-varying graph-based time deterministic routing algorithm and protocol for the space-ground integrated network was proposed.Firstly,a time-varying continuous graph model was constructed to describe the spatial and temporal attributes of multi-dimensional resources,such as the topology,link connectivity opportunities,node caching and so on.Then,a service-oriented time deterministic routing algorithm was proposed.According to the calculation rules of link cumulative traffic,and the constraints of node flow conservation and cache,the time-varying path with the shortest transmission delay was constructed.After that,a delay-guaranteed time deterministic routing protocol was designed by combining the proposed routing algorithm with both the segment routing technology and the time sensitive network technology,which supported the dynamic topology discovery,the efficient calculation of deterministic routing and the timing forwarding of data packets on the time-varying network.The simulation results show that,compared with the routing algorithm based on snapshot graph and contact graph,the proposed routing algorithm has higher link resource utilization rate and the packet successful delivery rate by jointly using link and node storage resources by association,and ensures the end-to-end transmission delay of services.

Key words: space-ground integrated network, time-varying graph, time deterministic routing algorithm, routing protocol, resource allocation on demand

中图分类号: 

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