八天线LTE系统测试挑战

FG美人捕鱼TD-LTE、FDD-LTEHELTE-Advanced(LTE-A)WUXIANJISHUSHIYONGLEJIZHONGBUTONGDEDUOZHONGSHURUDUOLUSHUCHU(MIMO)JISHU。JIANYUMIMOXITONGDEFUZAXINGZHENGZAIRIYITIGAO,YINCIXIANGGUANDECESHIFANGFAYEJIANGGENGJUTIAOZHANXING。LIRU,DANGQIANYIBUSHUDEMIMOJISHULIYONGLIANGJUTIANXIANLAIGAISHANXINDAOXINGNENG。HAIYOUYIXIELTESHEQUYILVXIANKAISHICAIYONGBATIANXIANJISHULAISHIXIANGENGGAODEXINGNENG。ZHEIXIEXIANJINDEJISHUJIANGSHICESHIFANGFADEXUANZEBIANDEGENGWEIZHIGUANZHONGYAO。

YAOXIANGZHAODAOZHENGQUEDEFANGFA,BIXUYAOCHONGFENLIJIEMEIYIBANBENDELTESUOSHIYONGDETIANXIANJISHU。LIRU,BOSHUSHITD-LTEDEYIXIANGGUANJIANTEXING。JINGUANTAZAIMOUXIECHANGJINGXIASHIYIZHONGJIJUXIYINLIDECHUANSHUFANGAN(LIRUKAIFANGDEXIANGCUNDIQUHUOREDIANFUGAIQU),DANTABINGBUZONGSHIZUIJIADEFANGFA。BOSHUFUXINGKEYITIGAOFENGWOZHONGJIESHOUXINHAODEXINZAOBI(SNR),CONGERKUODAFUGAIFANWEIHUOGAISHANFENGWOBIANYUANQUYUDEYONGHUTIYAN。TAHAIKEYICONGKONGJIANSHANGDUIXINHAODEFANWEIJIAYIXIANZHI,CONGERJIANGGANRAOJIANGZHIZUIDI。ZAIXINZAOBICHONGZUDEDIQU,BOSHUFUXINGBINGBUNENGSHISHUJUSULVDEDAOTIGAO。

TONGGUOZAIKONGJIANSHANGFUYONGBINGFASHUJULIU,MIMOKEYIZAIDIGUANLIAN、GAOXINZAOBIXINDAOTIAOJIANXIATIGAOSHUJUTUNTULIANG。WEILEYOUHUAMIMOSHUJUSULV,TD-LTESHIYONGBAOHANBAJUTIANXIANDEZUJIAN。ZAITU1ZHONG,YOUSIJUTIANXIAN(YILANSEXIANSHI)ZAIWULISHANGXINGCHENGLEJIAODUXIANGTONGDEJIHUA,ERLINGWAISIJUTIANXIAN(YILVSEXIANSHI)ZEYUQIANMIANDESIJUTIANXIANXINGCHENGLEWULIZHENGJIAODEGUANXI。

图1:此图显示的是一个TD-LTE eNodeB天线配置,可以用于优化MIMO数据速率。

TONGGUOXINGCHENGYIGEZHIXIANGJUTIYONGHUSHEBEI(UE)DEBOSHU,ZHEILIANGZUSITIANXIANZUJIANKEYIZENGQIANGXINZAOBI。LIANGGEZHENGJIAOJIHUADEBOSHUNENGGOUYOUXIAODIMOFANGCHULIANGGECUNZAIJIAODIGUANLIANTIANXIAN,JISHISHIJIDEKONGJIANGUANLIANJIAOGAOYEMEIWENTI。YINCI,ZHEIZHONGTIANXIANPEIZHINENGGOUKUODAFUGAIFANWEI,SHIGENGGUANGFANDEGAOSHUJUSULVCHUANSHUCHENGWEIKENENG(TU2)。

FG美人捕鱼TU2:YIGEXINGCHENGZHENGJIAOJIHUABOSHUDE8×2BOSHUFUXINGXITONG。

CHUTD-LTEWAI,BATIANXIANJISHUHAIKEYONGYUFDD-LTE。WANGLUOYUNYINGSHANGKEYILIYONGGAITIANXIANPEIZHILAIZENGQIANGSHANGXINGLIANLUDEJIESHOUXIAOGUO,JIEJUEDIGONGLVYONGHUSHEBEILIANLUYUSUANXIANZHIDEWENTI。3GPPDERAN1GONGZUOZUZHENGZAIJIJITAOLUNBATIANXIANJISHUZAILTE-ADESHIYONGHUABUSHU。

FG美人捕鱼ZAICHUANTONGDEXINGNENGCESHIZHONG,TIANXIANMOSHI,JIYIGETIANXIANZHENLIEZAIMEIGEFANGXIANGSHANGDEXINHAOZENGYI,TONGCHANGDOUHUIBEIHUSHI。ZHEIBUFENSHIYINWEI,ZAICHUANTONGDEDANLUSHURUDANLUSHUCHU(SISO)XITONGJINXINGDECESHIZHONG,RENMENWANGWANGHUIJIASHETIANXIANDOUSHIQUANXIANGDE。DANDUIYUDUOSHUJIZHANLAISHUO,SHISHIBINGFEIRUCI。XINHAOQIANGDUDEFANGXIANGXINGZAIMIMOKONGJIANXINDAOZHONGFAHUIZHEZHONGYAODEZUOYONG,ERZAIBOSHUFUXINGYINGYONGZHONGDEZUOYONGZEGENGWEIGUANJIAN。YINCI,ZAICESHIBATIANXIANXITONGSHI,RENZHENKAOLVTIANXIANDEMOSHIJIANGSHIZHIGUANZHONGYAODE。

WEILEFAHUIBATIANXIANZHENLIEDEQUANBUYOUSHI,LTEHELTE-AXITONGHUISHIYONGSHUANGCENGBOSHUFUXING,YIJIGANRAOYIZHIHEHEBING(IRC)DENGJIESHOUJIJISHU。SHIYONGIRCJISHUSHI,eNodeBJICHUJIESHOUJIZHAN(BTS)SHIYONGCONGDUOZHONGYONGHUSHEBEISHOUJIDAOXINXI(TONGCHANGSHIGEZAOYINYUANZHIJIANDEJIAOCHAGONGBIAN),CONGERYIZHINENGHUADEFANGSHIDUIZAOYINJIAYIYIZHI。ZHEILEIFANGANHUIZENGJIAMIMOXINDAOFANGZHENDEFUZAXING。CIWAI,TAMENHAIHUIDAILAIRUXIADECESHITIAOZHAN:

FG美人捕鱼XINDAODESHULIANG:YAOXIANGDUIYIGEBOSHUFUXINGXITONGJINXINGCESHI,JIUBIXUJIANLIQIMIMOXINDAO。ZAITD-LTEZHONG,SHANGXINGHEXIAXINGLIANLUZAITEXINGSHANGSHIXIANGTONGDE。ZAIFD-LTEZHONG,XINDAODEGUANLIANCHENGDUKENENGJIAOGAOHUOJIAODI–ZHEIYAOYIPINLVJIANGEHUOSUOGUANCHADAODE(RayleighSHUAIJIAN、YINYINGSHUAIJIANDENG)SHUAIJIANSHUIPINGDENGYINSUDEERDING。ZAISHIYANSHIZHONGWEICESHIYONGTUERCHUANGJIANDERENHERFXINDAOBIXUJIANGZHEIXIEXIJIEKAOLVZAINEI。

FG美人捕鱼DUIYUBATIANXIANXITONGLAISHUO,CILEICESHIHENMINGXIANJIANGSHEJIDALIANGDERFXINDAO。LIRU,YIGE8×2SHUANGXIANGMIMOXINDAOJIUXUYAO16GERFXINDAO。ZAIXUDUOSHIYANSHIZHONG,KONGJIANRFDOUSHIYIGEZHONGYAODEYINSU。YINCI,TIGONGZHEIYINENGLIKEYIDAFUDUZENGQIANGNENGLI,TONGSHIYOUBUHUIDAOZHICESHIPINGTAIDEGUIMOCHUXIANBUCHENGBILIDEYICHANGZENGZHANG。

CIWAI,YAOXIANGSHIXIANXINDAOHUYIXING,JIUYAOQIUDUI8×2SHUANGXIANGMIMOCESHIXITONGJINXINGXIANGWEIXIAOZHUN,ZHIYOUXIAOZHUNHOUCAINENGDUIXITONGDEBOSHUFUXINGNENGLIJINXINGCESHI。YOUXIAODEXIANGWEIDIAOZHENGHEXINDAOXIAOZHUNDOUSHISHIXIANKEKAOHEGAOXIAOCESHIDEGUANJIANYINSU。XINDAOSHULIANGDEZHEIZHONGZENGJIAHAIYAOQIUGENGRFYINGJIANGENGMIJIDIJICHENGDAOXITONGZHONG。RUGUOBUNENGYOUXIAOJICHENG,ZAIYOUDALIANGWAICEFENLIQI、HEBINGQIHEXUNHUANQIDENGSHEBEIDETIAOJIANXIA,JINGQUEHEKEKAODISHIXIANRFXINDAOJIHUHUICHENGWEIYIXIANGBUKENENGWANCHENGDERENWU。

XIANJINDEXINDAOJIANMO:YOUYUBATIANXIANLTEXITONGSHIYONGLEXIANJINDETIANXIANJISHU,CESHIZHONGSUOYONGDEJIANMOXINDAOBIXUZHONGXIANZHEIXIEJISHUZHONGSUOYONGXINDAODESHIJIWULITEXING。RUGUOZAIFANGZHENJIEGUOZHONGBUNENGJIANGSUOYOUDEXIJIEDOUNANGKUOZAINEI,ZEYOUKENENGJIANLIBUZHENGQUEDEJIZHUN,CONGERWUFADUIZHENZHENGDEXITONGXINGNENGJINXINGPINGJIA。LIRU,JIHUAHUIYINGXIANGYONGHUSHEBEIJIESHOUDAODEXINHAOGONGLV。YUWUJIHUADEANLIXIANGBI,JIESHOUDAODEXINHAOGONGLVMINGXIANJIAODI。ZHEIZHONGYOUYUJIHUAZHIJIEZAOCHENGDESUNSHIQUJUEYUYONGHUSHEBEIYUeNodeBTIANXIANZHENLIEZHIJIANDEXIANGDUIFANGXIANG。

TIANXIANMOSHIYEDUIXINHAOQIANGDUYOUZHIJIEDEYINGXIANG。JIESHOUXINHAODEGONGLVHUISUIXINHAOXINGJINFANGXIANGDEBUTONGERYOUSUOBIANHUA。YOUYUMEIZHONGKENENGDECHANGJINGDOUYOUYIXILIEDUTEDELIQUJIAO(AoD),YINCIGONGLVYEHUISUIFANGXIANGDEBUTONGERYOUSUOBIANHUA。DANGTIANXIANMOSHIHEJIHUAJIEHEZAIYIQISHI,ZHEIGEWENTIHUIBIANDEGENGNANYINGFU。XIABIAOXIANSHIDESHUANGXINDAOCHANGJINGXIABUTONGZUHEZAOCHENGDEGONGLVSUNSHI。BIAOZHONGDE“X”DAIBIAOYIGEJIAOCHAJIHUATIANXIANDUI,ERSHUXIAN(||)DAIBIAODESHIWUJIHUADETIANXIANZUJIAN。

BIAO:JIHUAHETIANXIANMOSHIDUIJIESHOUGONGLVCHANSHENGDEYINGXIANG。

FG美人捕鱼动态场景:对于一种波束赋型系统而言,仅在静态(非移动)条件下进行测试是远远不够的。波束赋型基本上包含两个步骤:估计用户设备的方向,以及将波束指向该方向。当用户设备移动时,它(相对于eNodeB天线阵列)的方向也会改变。在理解系统性能的过程中,这种现象会带来两个基本的问题:系统跟踪用户设备移动的速度有多快,以及系统的性能会因此受到怎样的影响?为了解答这些问题,我们必须使用能够代表实际运行条件的动态场景来对波束赋型系统进行测试。

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FG美人捕鱼 NINJIANGSHIDIYIWEIPINGLUNREN!

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