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北京邮电大学电子工程学院,北京 100876
Received:23 September 2022,
Revised:2023-04-02,
Published:25 May 2024
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王朝炜,杜嘉楠,王程,等. 软件定义卫星网络中基于业务调度的混合路由算法[J]. 电子学报,2024,52(05):1506-1515.
WANG Chao-wei, DU Jia-nan, WANG Cheng, et al. A Hybrid Routing Based on Traffic Scheduling in Double-Layer Software Defined Satellite Networks[J]. Acta Electronica Sinica, 2024, 52(05): 1506-1515.
王朝炜,杜嘉楠,王程,等. 软件定义卫星网络中基于业务调度的混合路由算法[J]. 电子学报,2024,52(05):1506-1515. DOI:10.12263/DZXB.20221090
WANG Chao-wei, DU Jia-nan, WANG Cheng, et al. A Hybrid Routing Based on Traffic Scheduling in Double-Layer Software Defined Satellite Networks[J]. Acta Electronica Sinica, 2024, 52(05): 1506-1515. DOI:10.12263/DZXB.20221090
为了解决低轨卫星网络高动态拓扑、大数据传输量、多信令开销的问题,满足全球覆盖和海量移动用户日益增长的需求,在研究不同业务性能指标体系的基础上,构建了高低轨卫星协同的软件定义卫星网络架构及虚拟拓扑模型;设计了综合考虑业务到达率和等待时长的优先级赋值函数,并提出一种基于业务感知与调度的联合星间路由算法,该算法包括针对高QoS需求业务的低复杂度轨道内优先转发路由算法和针对低QoS需求业务的链路加权路由算法.仿真结果表明,所提算法在平均端到端时延、丢包率和吞吐量等方面比传统算法均有显著的改善.
In order to solve the problems of high dynamic topology
large data transmission
multi-signaling cost of low-orbit satellite network
and to meet the growing demand of global coverage and massive number of mobile users
the software defined satellite network architecture and virtual topology model of high orbit and low orbit satellite collaboration are built on the basis of quality of services (QoS) of different traffic in operational performance index systems. A priority assignment function considering both traffic arrival rate and wait time is designed
and a joint inter-satellite routing algorithm based on traffic-aware and traffic scheduling is proposed. The algorithm includes a low-complexity intra-orbit priority forwarding routing algorithm for high QoS requirement services and a link weighted routing algorithm for low QoS requirement services. Simulation results show that the performance of the proposed algorithm is significantly better than that of the traditional algorithm in average end-to-end delay
packet loss rate and throughput.
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