基于时延的动态非连续接收周期调整机制

针对LTE系统的下行非连续接收(DRX)机制,提出了一种基于业务时延要求的动态非连续接收周期配置算法.首先网络侧按照正常的非连续接收机制对终端侧进行节能配置,然后利用实时的时延大小对非连续接收周期进行动态控制.数值分析表明,业务时延与网络负载有密切的关系,用户DRX周期配置需要与网络当前负载相结合;仿真结果表明,基于时延的动态周期调整机制,能够即时的适应网络状况以及自身需求的变化,与固定非连续接收周期相比,在用户满意度以及节能性上都有更好的表现.

A delay based dynamic discontinuous reception cycle adjusting scheme

A novel dynamic configuration scheme for discontinuous reception (DRX) cycle based on the delay requirement of service is proposed for the LTE downlink system. First, the eNB configures the UEs with the power saving mechanism according to the DRX specifications. Then, the delay parameters are used to control the DRX cycle dynamically. Numerical analysis shows that, there is a close relationship between service delay and network load. Therefore, the configuration of the DRX cycle should be combined with the current network load. Simulation results show that the delay based dynamic cycle adjusting mechanism can adapt to the current network situation as well as their own requirements. Compared with the DRX mechanism with a fixed cycle, the performance of the proposed scheme has a great improvement in terms of user satisfaction and power efficiency.