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提出了将切换优先信道预测预留方案应用于ROF路车通信系统以解决信道分配的方案.根据M/M/c排队模型理论,采用数值分析方法,调整车辆运行速度及网络通信负载,得到不同条件下预测区在整个小区中所占比例的最优值,并分析了预测预留方案对越区切换掉话率的改善程度.数值结果表明:该方案不仅适用于车辆运行速度较低、通信负载较大的城市交通系统,而且对通信负载量较大的高速公路通信系统,其越区切换的掉话率也能得到较明显地改善.
A scheme of applying handover priority channel prediction and reservation scheme to ROF communication system is proposed to solve the channel assignment.According to the M / M / c queuing model theory, the numerical analysis method is used to adjust the vehicle running speed and network communication load to get different The optimal ratio of the prediction area in the whole cell is analyzed and the improvement of the call drop rate of the prediction reservation scheme is analyzed.The numerical results show that the scheme is not only suitable for the vehicle with low speed, Load the larger city traffic system, and the traffic load on the highway communication system, the handover call drop rate can be significantly improved.