基于优化缓存模型的IPQAM频点管理方法研究

Research of IPQAM resource management method based on optimal cache model

针对已有基于缓存策略的IPQAM（边缘调制器）频点管理方法中响应速率有待进一步提高、响应时延较大等问题, 提出了一种基于优化缓存模型的IPQAM频点管理方法。该优化缓存模型的设计充分考虑了IPQAM频点资源、频点端口资源, 以及资源所在服务组之间的关联关系, 模型中只加载资源的部分属性, 以降低对系统内存的消耗。基于该优化缓存模型, 设计并实现了一种IPQAM频点分配、回收方法, 该方法充分利用该优化缓存模型的结构优势, 能够快速完成目标资源的定位, 具备较优的平均时间复杂度。仿真实验表明, 与同类方法相比, 该方法能够以更低的响应时延（0. 02~0. 04 ms）提供更高的响应速率（最高16 000次/s）, 在管理资源数量方面, 具备很好的系统可伸缩性。

In order to improve system response rate, and reduce the response time delay, this paper proposed an IPQAM frequency resource management method based on optimal cache model. The design of the optimal cache model fully considered the relationship between IPQAM, frequency, frequency＇s UDP ports, and service group. There were only parts of the resource attributes should be loaded in the cache model, and it reduced the consumption of the system memory. Based on the optimal cache model, this paper designed and implemented an allocation and recycling method of IPQAM frequency resource. This method could quickly complete locating the target resources and has the optimal average time complexity. Simulation experiments show that compared with the existing similar methods, this method can provide lower response time delay （0. 02~0. 04 ms）, and much higher concurrent processing capability（16 000/s）, in addition, this method brings system very good scalability characteristic in terms of managing resources quantity.