针对LTE-A网络系统中载波聚合资源调度问题,考虑到比例公平调度和载波衰减特性不同,提出一种基于固定频谱系数比例公平的LTE-A网络调度算法。首先,基于分时多接入的分频复用下行链路构建正则镶嵌六角形覆盖区域的LTE-A系统模型,并给出对应信道模型和码率分配计算方法;其次,基于固定频谱分配系数和比例公平调度算法,对LTE-A网络调度过程进行优化设计;最后,通过实验对距离阈值比进行影响分析,并对算法的用户公平指标和系统吞吐量指标进行对比分析,验证算法有效性。 Aiming at the problem of carrier aggregation resources scheduling in LTE-A network system, this paper proposes a LTE-A network scheduling algorithm based on the proportional fairness of fixed spectrum coefficients, considering the difference between proportional fair scheduling and carrier attenuation. First, LTE-A system model of regular mosaic hexagonal coverage area is constructed based on TD-SCDMA downlink and the corresponding channel model and code rate allocation are given. Secondly, based on the fixed spectrum allocation coefficient And proportional fair scheduling algorithm to optimize the scheduling process of LTE-A network. Finally, the influence of distance threshold ratio is analyzed through experiments and the user fairness index and system throughput index of the algorithm are compared and analyzed to verify the effectiveness of the algorithm.