LTE系统中DRX机制的分析与优化设计

发布时间：2018-06-23 02:03

本文选题：长期演进(LTE) + 非连续接收(DRX)机制　；参考：《重庆邮电大学学报(自然科学版)》2014年03期

【摘要】：非连续接收机制(discontinuous reception,DRX)是长期演进(long term evolution,LTE)系统中终端省电的关键技术之一。针对LTE系统中各种新兴业务和更高的数据传输速率快速发展导致终端能耗加剧的问题,在对DRX机制的原理进行详细分析的基础上,提出了一种长周期可调整的DRX机制。在DRX马尔科夫模型的基础上,根据欧洲电信标准化协会(european telecommunications standards institute,ETSI)数据流量模型,对长周期可调整DRX机制的2个性能指标功率节省因子和平均等待时延进行了理论分析。仿真分析在不同DRX定时器参数下的能耗和时延变化情况,并与固定周期的DRX机制在能耗和时延2个方面进行了对比分析。仿真结果表明,长周期可调整DRX机制在降低终端功耗方面有明显改善。
[Abstract]:Discontinuous receiver is one of the key technologies of terminal power saving in long-evolving (long term evolutional LTE systems. In order to solve the problem that the rapid development of various new services and higher data transmission rate in LTE system leads to the increase of terminal energy consumption, a long-period adjustable DRX mechanism is proposed based on the detailed analysis of the principle of DRX mechanism. Based on the DRX-Markov model and the (european telecommunications standards Institute ETSI data traffic model of the European Telecommunication Standardization Association, the power saving factors and the average waiting time delay of the long-period adjustable DRX mechanism are analyzed theoretically. The changes of energy consumption and delay under different parameters of DRX timer are simulated and compared with the fixed period DRX mechanism in two aspects: energy consumption and delay. The simulation results show that the long-period adjustable DRX mechanism has significant improvement in reducing terminal power consumption.
【作者单位】：重庆邮电大学;
【基金】：国家科技重大专项资助项目(2012ZX03006002003)~~
【分类号】：TN929.5

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