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为了实现LTE系统中高效的资源调度,支持实时业务,提出了一种基于边际效用函数的调度算法。该算法是在比例公平(Proportional Fair,PF)算法基础上,分别建立保证时延要求的边际效用算法模型和保证业务间公平性的多业务公平算法模型,二者结合推导出联合优化算法,通过对缓冲区中排队等待业务的调度优先级进行调整来实现。仿真结果表明,基于边际效用的联合优化算法,在保证一定系统吞吐量的前提下,与比例公平算法相比较,在业务间的公平性和时延性方面均有一定的提高,在有效性和公平性之间做出了更好的均衡。
In order to achieve efficient resource scheduling in LTE system and support real-time services, a scheduling algorithm based on marginal utility function is proposed. Based on the Proportional Fair (PF) algorithm, the algorithm establishes the marginal utility algorithm model to guarantee the delay requirement and the multi-service fairness algorithm model to ensure fairness between services. The two algorithms are combined to derive the joint optimization algorithm Adjust the priority of the queuing service in the buffer to adjust. The simulation results show that the joint optimization algorithm based on marginal utility can improve the fairness and time delay of services compared with the proportional fair algorithm under the premise of ensuring the throughput of a certain system. In the aspect of validity and fairness, Better balance between sex.