摘要
为提高军用网络的服务质量,满足军用数据传输的要求,对网络中心战的体系架构进行了分析,得出作战链路最重要的QoS指标是端到端时延,仿真研究了应用IPQoS技术对时延的改进效果.结果表明:通过优先调度以保证足够的服务带宽,可尽量优化重要数据流的端到端时延;在排队不可避免时,减少缓冲区队列长度可直接优化时延,但应考虑应用RED等机制寻求时延和吞吐量的平衡.对多跳作战链路中的QoS应用进行了讨论,仿真表明多跳链路上应用QoS的关键是在瓶颈带宽处的QoS应用.
To satisfy military requirements, through analyzing the structure of Network Centric War（ NCW）, the end-to-end latency is found to be the most important QoS parameter of the military link. By network simulation, the effects of applying IP QoS technologies to improve the end-to-end latency performance are studied. The results show that the end-to-end latency performance of the important data flows can be largely improved by prioritized scheduling, which can guaranty sufficient bandwidth; when queuing is inevitable, reducing queue length can directly improve the latency performance, but the balance of the latency and throughput of the data flow should be considered meanwhile. The instance of applying QoS to multi-hop links is also studied, and the simulation results show that QoS application at the bandwidth bottleneck of link is the most pivotal.
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
2007年第11期1756-1760,共5页
Journal of Harbin Institute of Technology
