LTE下行基于QoS的混合业务调度算法

针对现有调度算法不能同时满足多用户多业务的性能需求等问题,提出了一种新的基于服务质量(QoS)的长期演进(LTE)项目下行调度算法。该算法改进了修正的最大加权时延优先(MLWDF)算法的延时分式,用信道质量指示(CQI)值直接替代用户的瞬时速率,降低了计算复杂度。此外,兼顾了确保比特率(GBR)和QoS等级标识符(QCI)等QoS参数。仿真结果表明,该算法在保证小区的频谱效率的前提下,降低了实时业务的延时,提高了非实时业务的吞吐量,对LTE下行链路是一个很好的选择。

Error Detection and Pattern Prediction Through Phase II Process Monitoring

The continuous monitoring of the machine is beneficial in improving its process reliability through reflected power function distribution.It is substantial for identifying and removing errors at the early stages of production that ultimately benefit the firms in cost-saving and quality improvement.The current study introduces control charts that help the manufacturing concerns to keep the production process in control.It presents an exponentially weighted moving average and extended exponentially weighted moving average and then compared their performance.The percentiles estimator and the modified maximum likelihood estimator are used to constructing the control charts.The findings suggest that an extended exponentially weighted moving average control chart based on the percentiles estimator performs better than exponentially weightedmoving average control charts based on the percentiles estimator and modified maximum likelihood estimator.Further,these results will help the firms in the early detection of errors that enhance the process reliability of the telecommunications and financing industry.

二维扩散方程的局部二阶线性保极值节点计算方法及应用

对一般四边形网格设计一种优化的节点控制体,并构造了一种扩散方程的保极值二阶收敛的局部线性节点计算格式(优化控制体节点格式,VOC格式)。在网格不出现异常节点的情况下,证明VOC格式是保极值、线性精确和二阶收敛的。而且在均匀的矩形网格上,修正的逆距离加权格式与VOC格式等价,从而对间断系数问题也是局部二阶收敛的。VOC格式可以用于单元中心型线性扩散格式和保正格式的节点值计算。数值算例表明对扭曲网格上的间断系数问题,VOC格式是二阶收敛的。采用VOC格式计算节点值的线性九点格式具有线性精确性和二阶收敛性,采用VOC格式的保正格式也具有二阶收敛性。