LTE及方案介绍中文课堂培训

Donotdeletethisgraphicelementsinhere:AllRightsReserved©Alcatel-Lucent20103GPP长期演进技术LTE介绍AllRightsReserved©Alcatel-Lucent2010LTE概述5课程目标通过学习,学员可了解以下知识LTE背景及最新进展情况LTE物理层关键技术介绍LTE网络相关知识AllRightsReserved©Alcatel-Lucent2010LTE概述6目录1.LTE规范及标准的演进2.LTE关键技术介绍3.LTE空中接口简介AllRightsReserved©Alcatel-Lucent2010LTE概述71LTE规范及标准的演进AllRightsReserved©Alcatel-Lucent2010LTE概述8LTELTE:LongTermEvolution长期演进技术是3G与4G技术之间的一个过渡是3GCDMAEvDo、WCDMA和TD-SCDMA的统一演进技术在3GPPRelease8阶段开始定义AllRightsReserved©Alcatel-Lucent2010LTE概述9LTE是所有技术的下一代演进目标CDMATDMACDMA1XBWA4GITU100Mb/s(移动状态)1Gb/s(热点)仍然基于OFDM!GERANEvolutionsWiMAX16dTD-SCDMAW-CDMA/HSPALTER8/R9FDD/TDDHSPA+GSM/EDGELTER10FDD/TDDTD-SCDMA演进WiMAX16mTDD/FDDWiMAX16eTDDEVDORevA/BCDMA1X增强版AllRightsReserved©Alcatel-Lucent2010LTE概述103GPP对LTE的要求及性能目标高速数据业务100MbpsDL(20MHz,2x2MIMO)50MbpsUL(20MHz,1x2)高频谱利用效率3-4xHSPARel’6inDL2-3xHSPARel’6inUL可扩展带宽支持1.4,3,5,10,15,20MHz小区边界速率提高2-3xHSPARel’6inDL*2-3xHSPARel’6inUL全宽带覆盖UMTS/GSM/CDMA/WiMAX互联Interruptiontime500msforNRTInterruptiontime300msforRT无线接入网核心网14|Welcometothe100GEra|June2010低延迟5msuserplane(UEtoRANedge)100mscampedtoactive50msdormanttoactiveAllRightsReserved©Alcatel-Lucent2010全分组业务实现简化网络结构AllRightsReserved©Alcatel-Lucent2010LTE概述113GPP定义的LTETDD及FDD的频段范围3GPP可用的全部频段38号频段被工信部定义为CMCC六城市规模试验网频段AllRightsReserved©Alcatel-Lucent2010LTE概述123GPP定义的LTE频道编号EARFCN公式：Fxx=Fxx_low+0.1(Nxx–NOffs-xx)其中：xx=上行或下行：E-UTRAOperatingBandDownlinkUplinkFDL_low(MHz)NOffs-DLRangeofNDLFUL_low(MHz)NOffs-ULRangeofNUL1211000–59919201800018000–1859921930600600-119918501860018600–191993180512001200–194917101920019200–199494211019501950–239917101995019950–20399586924002400–26498242040020400–20649687526502650–27498302065020650–207497262027502750–344925002075020750–21449892534503450–37998802145021450–2179991844.938003800–41491749.92180021800–2214910211041504150–474917102215022150–22749…3420103620036200–3634920103620036200–363493518503635036350–3694918503635036350–369493619303695036950–3754919303695036950–375493719103755037550–3774919103755037550–377493825703775037750–3824925703775037750–382493918803825038250-3864918803825038250-386494023003865038650-3964923003865038650-39649AllRightsReserved©Alcatel-Lucent2010LTE概述13LTE用户终端（UE）分类UECategory12345Peakrate(Mbps)DLUL1055025100501505030075RFbandwidthDLModulation20MHzQPSK,16QAM,64QAMQPSK,UL2RxDiversityQPSK,16QAMAssumedinperformancerequirements16QAM,64QAM2x2MIMO4x4MIMOOptional不支持支持支持LTE的终端就像无线上网卡一样，类别不同，性能不同AllRightsReserved©Alcatel-Lucent2010LTE概述143GPP36系列(LTE)规范3GPPRAN1RAN2RAN3Spec36.20136.21136.21236.21336.21436.30036.30236.30436.30636.31436.32136.32236.32336.33136.40136.41036.41136.41236.41336.41436.42036.42136.422Layer1GeneralDescriptionPhysicalchannelandmodulationMultiplexingandchannelcodingLayer1procedureLayer1measurementsEUTRANoveralldescription(stage2)ServicesprovidedbyLayer1UEprocedureinIdleModeUEcapabilitiesLayer2–MeasurementsMACRLCPDCPRRCArchitectureDescriptionS1generaldescriptionS1layer1S1signalingtransportS1APS1datatransportX2generaldescriptionX2layer1X2signalingtransport3GPPRAN4RAN5Spec36.10136.10436.10636.11336.12436.13336.14136.14336.50836.50936.521-136.521-236.521-336.523-136.523-236.523-3UETxRxBSTxRxRepeaterTxRxBSandRepeaterEMCUEEMCRRMrequirementsBSconformancetestRepeaterconformancetestUEconformance–commontestenvironmentSpecialtestfunctionsUETxRxUEICSUERRMconformancetestProtocolconformanceICSATS36.42336.42413|Welcometothe100GEra|June2010X2APX2datatransportAllRightsReserved©Alcatel-Lucent2010AllRightsReserved©Alcatel-Lucent2010LTE概述15LTE的持续演进：LTE到LTEAdvancedLTE终端／LTEAdvanced终端在各自对方网络中相互兼容LTE-Advanced是LTE的平滑演进改善室内覆盖增强自适应配置和智能优化能力增强性MIMO频谱扩展到100兆功能增强峰值速率下行达到1Gbps高速移动下：下行100Mbps，上行超过50Mbps峰值频谱效率：下行30bits/s/Hz，上行15bits/s/Hz性能目标LTE为4GLTEAdvanced奠定了坚实的基石AllRightsReserved©Alcatel-Lucent2010LTE概述16练习支持向LTE演进的技术有()。1.CDMAEvDo2.WCDMA3.TD-SCDMA4.WiFiAllRightsReserved©Alcatel-Lucent2010LTE概述172LTE关键技术介绍AllRightsReserved©Alcatel-Lucent2010LTE概述18LTE关键技术万流归宗的演进目标…LTEGSM/UMTSGSM/EDGEGSM/EDGEDo-RevADo-RevAB/A+HSPA+UMTS/HSPA+TD-SCDMAWIMAX…引入效率更高的技术4G“3.9G”3GIMT-AdvancedfamilyITU-R定义IMT-2000家族•运动状态：峰值100Mbps•静止状态：峰值1Gbps扁平化IP网络技术更短传输间隔:1ms基于IP/MPLS传输的回程网。适用于IMS,VoIP,SIPFlatIP多入多出天线技术提高了链路容量克服多径干扰MIMO1.4MHz3MHz20MHz10MHz5MHzLTE频带选项3个关键技术，都为4G-LTEAdvanced沿用目前，尚无比OFDM＋MIMO（综合码分多址-空分多址-频分多址接入）更有效的无线技术OFDM正交频分复用技术提高频谱利用率.简化接收端设计降低终端成本超过5MHz带宽限制AllRightsReserved©Alcatel-Lucent2010LTE概述192LTE关键技术介绍—OFDM技术AllRightsReserved©Alcatel-Lucent2010LTE概述20频率正交定义(A)(E)(D)(C)(B)1cff2cff3cff4cff5cff1T1T正交非正交正交,n=3正交,n=2正交,n=1(OFDM)OFDM:OrthogonalFrequencyDivisionMultiplexing正交频分复用AllRightsReserved©Alcatel-Lucent2010LTE概述21OFDM基本原理OFDM的基本原理是将高速的数据流分解为N个并行的低速数据流，在N个子载波上同时进行传输。这些在N子载波上同时传输的数据符号，最终叠加构成一个OFDM符号AllRightsReserved©Alcatel-Lucent2010LTE概述22-10-50510-0.4-0.200.20.40.60.811.2-0.8-0.6-0.4-0.200.20.40.60.8-1-0.8-0.6-0.4-0.200.20.40.60.81OFDM和多载波传输1f子载波2f子载波3f子载波4f子载波-0.8-0.6-0.4-0.200.20.40.60.8-1-0.8-0.6-0.4-0.200.20.40.60.81-10-50510-0.4-0.200.20.40.60.811.2-0.8-0.6-0.4-0.200.20.40.60.8-1-0.8-0.6-0.4-0.200.20.40.60.81-10-50510-0.4-0.200.20