PCFICH配置对用户终端吞吐率影响研究

Study on influence of PCFICH configuration on UE throughput rate

在LTE系统中,PCFICH信道配置主要作用是指示PDCCH控制信道在一个子帧内占用OFDM符号的个数,PDCCH控制信道数量直接影响小区可调度用户数和峰值速率。为了找出不同场景下最优的PCFICH信道配置,以达到最高的用户终端吞吐率,本文通过计算不同PCFICH配置数下的理论峰值速率,对用户数分段进行试验,并结合实际测试数据进行研究对比,最终得出用户数从低到高的5种场景下的PCFICH配置建议。

In LTE system,PCFICH channel confi guration is mainly used to indicate the number of OFDM symbols occupied by PDCCH control channels in a sub-frame.The number of PDCCH control channels directly affects the number of dispatchable users and peak rate of cell.Under different scenarios in order to fi nd out the optimal PCFICH channel confi guration,and to achieve the highest user terminal throughput,in this paper,on the basis of theoretical calculation under different PCFICH confi guration for the peak rate,testing in users,and connecting with the actual testing data for research,fi nally we conclude that users from low to high fi ve scenarios PCFICH confi guration recommendations.