本文针对卫星网络资源有限的情况下,特别是当卫星网络带宽迅速降低至难以保障所有数据流的基本带宽时,基于服务满意度和中断服务不满意度的概念,设计并实现了一种面向服务满意度的数据流接纳控制决策机制.该决策机制给出了在无数据流中断模式下的最优求解算法和有数据流中断模式下的近似最优求解算法,对所有数据流进行接纳控制决策,决定各条数据流的通断情况及各自的带宽值,使得服务满意度达到最大.通过配置数据流对接纳控制决策机制进行仿真测试,实验结果验证了该决策机制在解决接纳控制决策优化问题上的优越性.
Focusing on satellite networks under the condition of limited resources,especially when the bandwidth of satellite networks reduces quickly and it is difficult to guarantee the basic bandwidth for all data flows, based on the concept of the degree of service sat- isfaction and unsatisfaction of service interrupting, we design and realize a service satisfaction oriented data flow admission control de- cision-making scheme. This scheme consists of the optimal algorithm which is used when no data flows interrupted and the approxi- mate optimal algorithm which is used when any data flows interrupted. By determining the bandwidth of every data flow, the scheme makes decisions of admission control for all data flows, to make sure the degree of service satisfaction is the greatest. By simulation experiments, the performance of the service satisfaction oriented data flow admission control decision-making scheme is tested. The re- sults verify the superiority of the scheme in the solving of the admission control decision-making optimization problems.