面向多层卫星网络的信道资源管理方法

多层卫星网络结构复杂,信道资源有限。对多层卫星网络信道资源进行高效管理,能够提高卫星系统整体效率。为此,提出了一种面向多层卫星网络的信道资源管理方法。针对LEO/MEO/GEO三层卫星网络,首先根〖JP2〗据业务类型划分优先级,其次运用自回归积分滑动平均(autoregressive integrated moving average,ARIMA)〖JP〗模型预测小区内新呼叫业务用户量,然后根据预测用户量和卫星剩余信道带宽为用户选择接入层,再利用博弈模型判断是否允许用户接入,最后根据降级因子选择降级用户让出信道带宽。仿真结果表明,该方法能够降低整体阻塞率,提高整体效用。

Channel resources management strategy for multi layer satellite network

The characteristics of multi-layer satellite are complex structure and limited channel resources. Efficient management of channel resources in multi-layer satellite can improve the work efficiency of the entire satellite system. Therefore, a channel resources management strategy for multi layer satellite is proposed. To deal with the problem of channel resources management in LEO/MEO/GEO satellite networks, the priorities are classified by the traffic type firstly. Secondly, the users of new caller traffic in the cell are predicted based on the autoregressive integrated moving average (ARIMA) model. Thirdly, the access layer is chosen according to the predicted users and residual channel bandwidth. Then, the game model is used to determine whether users access or not. Finally, the degraded users are chosen by the degraded factor to release channel bandwidth. The simulation results prove that this strategy can reduce the whole blocking rate and improve the whole utility.