基于LTE下行多业务传输QoS保证的跨层调度算法

摘要

众多资源分配的调度算法中,有区别地实现不同业务QoS要求的调度策略研究不多.针对此问题,通过将不同QoS等级和要求加入到调度策略的影响因素中,提出了一种适用于LTE下行多业务传输的多目标跨层分组调度算法,并设计了一个用户满意度函数,用来评价分组调度算法的综合性能.对该算法性能进行了仿真验证,并同PF算法仿真结果进行比较与分析,表明该算法能够满足不同业务的QoS要求,综合性能优于PF算法.%Among the numerous scheduling algorithms of resource allocation,few studies of scheduling strategies focused on the distinction of different service's QoS requirements.This paper presented a multi-target cross-layer packet scheduling algorithm in LTE downlink multiple traffic by adding different QoS classes and requirements to the influencing factors of scheduling strategy.It also designed a customer satisfaction function in order to estimate the comprehensive performance of packet scheduling algorithms.The proposed algorithm and proportional fair(PF) algorithm were compared in the simulation.The result shows that the proposed algorithm can satisfy the QoS requirements of different traffic and its comprehensive performance is better than the performance of PF algorithm.