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文章在分析2G-ALE建链流程的基础上,建立了平均建链概率和平均建链时间性能指标数学模型,依据此模型分析了信道扫描速率以及引导呼叫的长度对平均建链时间的影响。通过仿真比较了两种信道驻留时间的优化方案,结果表明在差信道条件下适当降低信道扫描速率可以减少平均建链时间。指标模型和仿真分析对于ALE系统的设计优化具有一定的参考意义。
Based on the analysis of 2G-ALE chain establishment process, the paper builds a mathematical model of average building chain probability and average building chain time performance index. According to this model, the influence of channel scanning rate and lead length on average chain-building time is analyzed. The optimization scheme of two kinds of channel dwell time is compared by simulation. The result shows that reducing the channel scanning rate properly can reduce the average link-up time under poor channel conditions. The index model and simulation analysis have certain reference meaning for the design optimization of ALE system.