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1、LTE重要指标CQI分析一、CQI指标定义:CQI:ChannelQualityIndicator,信道质量指示,是无线信道的通信质量的测量标准。CQI能够代表一个给定信道的信道测量标准所谓一个值(或多个值)。通常,一个高值的CQI表示一个信道有好的质量,反之亦然。CQI>=10是采用64QAM调制的必要条件,CQI>=7是采用16QAM调制的必要条件,采用高阶调制方式,在同等条件下,能获得更高的下载速率。目前省公司采用CQI>=7的比例来衡量网络覆盖水平。二、CQI指标分析CQI指标从2014年9月底网管上线后开始采集记录,从
2、下图可以看出,CQI>=7的比例随着CQI上报总次数的增加而下降,目前该指标仍处于下降通道。从11月份统计的日指标来看,一周以内平日CQI>=7的比例高于周末,每周随用户数增长而下降。otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthO
3、rganization,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand
4、从12月8日到12日来看,工作时间段的接入比例明显好于非工作时段。从12.7-12.13一周CQI上报<7次数Top20来看,理工两个校园区域是CQI<7上报次数最多的区域,校园区域普遍用户多,CQI比例一般,接入距离较小;农村镇级局站的比例逐步增加,农村站点CQI的Top有以下特点:CQI≥7比例低(80%以下),最大激活用户数少(10个以下),平均接入距离大(1km以上)。扇区CQI≥7比例CQI<7上报次数最大激活用户数平均接入距离(米)101_5174.45712090704281091.7045102_5141.800
5、51527490081498.4221103_5071.31851515234511980.2228104_4988.14811301673819566.0911otherstaffoftheCentre.Duringthewar,ZhuwastransferredbacktoJiangxi,andDirectorofthenewOfficeinJingdezhen,JiangxiCommitteeSecretary.Startingin1939servedasrecorderoftheWestNorthOrganization
6、,SecretaryoftheSpecialCommitteeAfterthevictoryofthelongMarch,hehasbeentheNorthwestOfficeoftheFederationofStateenterprisesMinister,ShenmufuguSARmissions,DirectorofNingxiaCountypartyCommitteeSecretaryandrecorderoftheCountypartyCommitteeSecretary,Ministersand105_4952.97
7、071078263493427.6461106_4985.3728984280015989.5716107_5183.5629978958616412.2471108_4992.8067928480022251.068109_5171.780386173659564.2704110_5164.4827819589371836.9098111_5079.1509803150081184.9733112_4957.2999779257291494.8828113_5092.4267701702515376.7646114_5078.
8、1277691413611888.7054115_5074.4472660009771231.3482116_5189.7962625396212405.8823117_5065.6328621743772165.2663118_4984.71556151077