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为了对基于轮询机制的通信系统进行理论设计和性能评价,需要对平均排队队长进行定量分析。本通信系统采用了基于完全服务的非抢占排队优先权轮询机制作为信道共享策略。首先建立了系统分析的数学模型,然后利用嵌入马尔可夫链理论推导出系统的概率母函数。通过对系统一阶特性的迭代计算,最终解析出非对称情形下的平均排队队长表达式,并且利用计算机仿真实验证明了分析的有效性。
In order to theoretically design and evaluate the performance of communication system based on polling mechanism, it is necessary to quantitatively analyze the average queuing captain. The communication system adopts a full service non-preemptive queuing priority polling mechanism as a channel sharing strategy. Firstly, the mathematical model of system analysis is established, and then the probability mother function of the system is deduced by embedding Markov chain theory. Through the iterative calculation of the first-order characteristics of the system, the average queuing captain expression in the asymmetric situation is finally resolved, and the validity of the analysis is verified by computer simulation.