The requirement analyses and application of IP QoS in Network Centric War

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.