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1、5G下行速率偏低问题排查优化方法案例上报省份:福建案例上报人:林凤城13506030588一、关键词:速率排查、AMBR二、案例分类1 .问题分类:网络性能类2 .手段分类:参数调整三、优化背景福建移动5G实验网进行高通商用终端束速率测试四、问题现象某站点进行峰值速率测试中,从PDN侧下行灌包IGbps,而CPE侧只测到了250MbpsO五、原因分析1、确认现场测试环境无线环境正常;现场核查以下指标:SSB-RSRP和CSI-RSRPSSB-SINR和CSITINR上下行MC下行BLER,均无异常。如下所示,RSRP:-8ldbm,bler:0%o.V1I 、oc Qm kVANALYSEHN
2、R5GMAC H/AMAl VSRI g,乂4 GMAC WANAtva5H(9hNRxiMAC H/AMAl EXShmRSGMl 1 WAMALVSB(MQSH “ANAlYaMT9ZNRSGMAC KAMAt WSA m,MR5GMC一 二J J fw59BmK.rnr2.r n32.r n5gjnc.r.flMtfk.Kc6期 NOGMAC Ul IhI 1900 ms CAJD: 0 INo PUSCH 9tMtf TPUT .mtnc. O INO POSCH 9r9t TPVTin(59_mc.rncm.rMimrwry430n*Ct pr4ms: dr NR5GUUl mode
3、 1 C4t.mUc (Ml reset 071NOGMAC ! RACH 19 nw CB RACH cm/MCeed c 0.0 CB Free RACH cnt/succeed QQ MSGl tc cm WR ey ent O RAR oot 4 vwn Cf 751 NtSGMll MLl Ut 1900 rm CAJO 0 (Tx b*n 滋 IlTg wtkh ent (VD Av9 FTL 3513 IOPPE F -2664060 hCs RSKP: 41 dBHCut ANAiYSMJl mxe pw: ckwt N02Uu le IIeMJnMiC 0d res O a
4、PUSCH 9E TPVl .mctnc.qshc 721烟GMAC Ol lst 190C rm SiO O INO POSCH .E TPVT现MaGMAC 1 RAeH 1900 rm 8 RACH WWAIVSK-HNR5GMACMA1VSK4.NR56M11 4AIV1K1omQSH(c n9-mc.mtfk.c (nmmtnc-c (n59.m*c.mcftiM.c (nf5g-mc.mtnc.ceedg QQ 1 MSGI t 6t0hNR5GMACn*NR5Gi1ACqib_wo*e.c3VavHI9VNwGMACWYSKHNR56MU MAivasagJQSHnt59.nMC
5、ewtf*c .c (n6t,mc.mtnc.c (nt9-m.mtfk.c(rw5g,mc.r.Mfk.h(CVCfcec198AULYC 432 ce pf*ns: ckerc NfrGUUll mode 1 cat,mUc (Ml reset 0 J0 MSGMAC I Ul UM )900 rm I CAJR 0 INO PUSCH 9r 0 INo POKH 0四 TPVT7J NR5GMAC RACH 1900 ms CB RACH E&xeed g。内 CB FfM RACH EZaKCeed St 0.0 j MSGl t* CfM SR apy SolRAR 8t of wn
6、 0 751 NRSGMU MU Urt 1900 E CAJO 0 (TX bm id i T b*m MiCh ent (W Avg FTb 3513 10ppm g *266C8M69 hC( -ti d8MCu ANALV1B HJ3 ImMe PMam$: clM NR5Gl mode I cwm*sk 0l rrt 0 670 NR5GMAC IuI 皿 IXOrml CAJDt 0 (No PUSCH 9tst TPUT721) NWGMAC I Ot tort 1900 rm I CAJfX 0 INO POKH 伊E TPUT7 NR5GMAC RACH 1900 ms CB
7、 RACH WKCeed g 0,。 CB Fttt RACH cM/succwd g 0.0 MSGI t* CntO RAR ewy 0e 0 RAR Avg FTL 35B IoPaE *9 V -266OW bfCurr RSMh 41 d8mCufxqCount!9Tineacasp:201V051513!3219.89(0xe7S5628fl67M)LIaeXOers751ClientD!76BafferXDiLevel!2Foixat:SRSGKL1MLl1sz1900SfldDI0ITxZaKld1TxRxbeanswiccnc0/01AvgFTLi3513IQPBHAvqTT
8、Li2664809tsCurxRSRPi-l1BdlFXleV3inrSg.jMCjKcricqsb.cCliencXaoe:XR5GKL1Tag;PRF中h.U4198 ANALYSIS 56 KkMt pMrm: Ctenfc NRSGUlAl mode 1 Kal.iz# Odl rwfc 0 wS9aQulsqh.cv5aQul.qth.ctv$_Qul.qth.ciw5Qul.qth.ccri2dl.h.ctC.dl.qthrGsdl.qi.crC.dl.qh.cEQ.dLqthcEQ.dl.qthl2U18KbE窃*0Kbt)RLCMAG19KbPilPM(t4170KbfHlPH
9、Y:001KbPq12bufVtfdetay:2mtAv9RlCRn2192ImTPUTIMlINR5G12UIIUa1900rmRLCMu:%AayNACKnNvIDctfoUL3QVD.TxACVNAoySgtrfotDl:22/0QIPln1367NRSG121ASUIRBidc3RLCMtSNnolACK:15070150XRLCrt:6699byte吨PntHCOUNT:150742Utrevdtone(FA-UpkViaCPOU/RLCSutUVGe闺:44/4113831NR5Q21SUK61ESU)%IUTbytG344JODtuafdedPiVb):MIsMDNE4。Pfxd
10、Vbtf1900npt为PHYl1015KbptKMAq14KgiLCUKbtWoCpI12KbptIXlPAjUKbpt9iPA12KbKHOCP12KbPi9VA12KgiIAPTPU987)NR5GUDlLMt1fmDl4gPHY:1Kbpt49RIXM9PDCP:0KbPS4A-4DCP:12Kbpt4gP0CP“#A12Kbps49AAP:12KWTPVT11NRSGu(XIUa1900mtMACPad:1001KbptIUPPdrop:0KbpiSDCPdrop:0Kbpt(FC0Kbs)4gPDCPaopc0Kbpt(K0Kbpt)4tcdf049V,ApbIOSyNR5GL2(
11、XNRPDCPmnbytM:OfPDCPFCpH/bytevMPApw*dmgPHcnVtet:00fCtf1PDUfromLTfc10586fUfdtfSutu:0DSM1085NR5GL2(MLTEDropfolOOW:0bytrNROOW:120WTFG0byttfPAe3IP:WTPUT1128NRSGU(MStMeR8dc3RlCAtoVMH,gh:23382V23382SRLCtoUMACKVM1M4S1M4SredbCAt:0UftDlKtMtyZSUtusMnfcM/46(mH40INR5GU(MSlMtRLCBUItO%MCnt2100tK4rMcrCForceMiECwdU
12、 RBa笫 I AVg PHR de 4 A2、确认测试小区无线环境参数无异常;现场确认小区基本配置参数,无异常,主要参数有:小区RE参考功率PSS功率偏移256QAM功能上下行传输模式小区带宽等,无异常。aSMlMOOC上Efi由GAbdrEMBUV121M刀用ItaDMaicSkeSMwCmwBNRCeIDUHFfwwvWM2maoWcXSCSSceokanwCMJRmiUIAncOUtacAMM(Bw3、确认现场测试终端连接正常。4、检查基站收包是否正常。在灌包的情况下,进入dps容器,Pad管理进程,输入查询命令:bsp_show_net_rate0从查询结果倒数第三行的TX参数值可以看出,基站收包正常,可以达到1Gbps;5、怀疑核心网HSS用户签约信息AMBR参数值等设置有问题,连接DSP监控工具,从基站侧看到核心网配置的下行UE-AMBR值为256Mbps;r核心魔掌乃SMbPSstructCatcKrclIlConfxcexI1Intdc日,ueAbr(IstructUreVAbrItXunsignedlo%lg,cmspedUtDlLchFrestntintdec4UtDlLchLst(IIlructUrcVtDlLehLixtxUeRe