基于SDN的铁路系统空天地融合网络架构

doi:10.11959/j.issn.2096-3750.2020.00184

Abstract

Abstract:

In view of the current situation that it is difficult to guarantee the safe and reliable transmission of data with the poor geographical environment in the single standard train communication network,the communication needs of each business of the railway system were investigated and a space-terrestrial integrated network architecture based on software defined network (SDN) and network functions virtualization (NFV) was proposed.By focusing on the controller to manage the physical facilities,the architecture realized decoupling application and physical infrastructure.The design of the architectural details and the requirements of the agreement for the architecture in the functional requirements and the information flow were discussed.In the end,the performance comparison between the space-terrestrial integrated network and other single-system network coverage was given,problems remaining to be solved and some feasible solutions faced by the space-terrestrial integrated network were briefly discussed.

Key words: software defined network (SDN), network functions virtualization (NFV), network convergence, space-terrestrial integrated network

CLC Number:

TN911.22

Yinglei TENG,Xin LI,Jian WANG,Bogen CAI,Mei SONG. SDN enabled space-terrestrial integrated network architecture of railway system[J]. Chinese Journal on Internet of Things, 2020, 4(3): 30-41.

Figures/Tables 6

References 39

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应用业务	吞吐量	传输时延/ms	分组丢失率	优先级	实时性	可靠性	安全等级
列车安全预警	小	50	10^-6	1	高	高	高
应急通信	较大	100	10^-6	1	很高	很高	高
列车安全视频监控	大	150	10^-3	3	高	高	一般
语音通信	较大	100	10^-3	3	较高	高	高
列控系统	较大	≤10	10^-5	1	很高	很高	高
自动驾驶	大	≤6	10^-9	1	很高	很高	高
状态监测与远程故障诊断	较大	50	10^-6	1	很高	较高	高

SDN enabled space-terrestrial integrated network architecture of railway system

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