ThegrowingroadforLTETDD

1、huawei technologies co., ltdhuawei confidential security level: 2021-11-2the growing road for lte tddhuawei technologies co., ltd.huawei confidential page 2contentslstandard progressltechnique featureslindustrialization strategieshuawei technologies co., ltd.huawei confidential page 3standard progre

2、ss overviewsae sae rel 8 (approval)3gppsae sae rel 8（enhancement and improvement）lte lte rel8 (approval)200820092010 sae sae rel 8 (functionally freezing)lte lte rel8(functionally freezing )lte advanced lte advanced rel 9lte lte rel8(enhancement and improvement )sae sae rel 9 ？lte/sae protocols for

3、commercial realization is ready in 2008 huawei technologies co., ltd.huawei confidential page 4contentslstandard progressltechnical featureslindustrialization strategieshuawei technologies co., ltd.huawei confidential page 5technique features architecture and protocol stackslte tdd & fdd have sa

4、me network architecture and protocol stacks.architecturefunction splituser plane stackcontrol plane stacklittle difference in phy and machuawei technologies co., ltd.huawei confidential page 6technique features frame structurekeep good compatibilities and co-exist with td-scdmalte tddtdscdmahuawei t

5、echnologies co., ltd.huawei confidential page 7ldwpts: sch is in this slot which is similar to dwpts in td-scdmalgp: dl to ul guard period in a tdd system like td-scdmaluppts: short p-rach or sounding reference signal could be transmitted in the slot where td-scdma transmits p-rach. technique featur

6、es special slotsdwpts, gp, uppts in lte tdd keeps compatibility with td-scdma.huawei technologies co., ltd.huawei confidential page 8technique featuressc-fdma & ofdma uplink physical channel processingdownlink physical channel processinglte tdd uses same sc-fdma & ofdma scheme as lte fddhuaw

7、ei technologies co., ltd.huawei confidential page 9contentslstandard progressltechnical featureslindustrialization strategieshuawei technologies co., ltd.huawei confidential page 10industrialization strategies spectrumbandchinaeuropenorth americacomments1900-1920phsnear umts ，need interference guard

8、near pcs，need interference guardbase band width is1020mh2010-2025td-scdmausableusablelte tdd can co-exist with td-scdma2300-240014 licenses issued in some countries, e.g. australia, norway, korea, although it is satellite service band in north america, russia, france.usable for lte tdd2570-2620licen

9、ses have been issued in some countries, e.g. usa, mexico, australia, japanusable for lte tddcandidate spectrum for lte tdd：l2.5/2.3ghz：licenses have been issued in some countries；bandwidth20mhz per license.l1.9/2.0ghz：most licensed spectrum is idle, bandwidth is 5mhz。there have been spectrum resourc

10、es for lte tdd already.huawei technologies co., ltd.huawei confidential page 11m0：start of poc activitym1: siso l1/l2 pocm2: mimo l1/l2 pocm3: rrm pocm4: mobility pocm5: start of iot planningm6: iodt planningm7/8: first iodt ready & iot planning finishedm9: first iot readym10: trial planning fin

11、ishedm11: setup of trial network finishedm12: network testing and demon.industrialization strategiesindustry alliancelots of operators and venders are protagonists in the lsti activitieshuawei technologies co., ltd.huawei confidential page 12lhot zonelcontinuous urban coveragelwide area continuous c

12、overagecncnlscenariophot zone/spot coverageppartially continuous coverage psmall cell, using pico/micro enodeblservicephigh data rate high traffic load p2g/3g traffic compensation3g/2gltelscenariopcontinuous coverage in urbanpco-locate with 3g/2g siteslservicepurban trafficphigh data ratepvoiplscena

13、riopcontinuous coverage in wide areapco-locate with 3g/2glservicepwhole network continuous lte experience, high speed wireless connectionsindustrialization strategiesnetwork setuplte tdd is as same flexible for network deployment as lte fddhuawei technologies co., ltd.huawei confidential page 13gw（s

14、erving、pdn）imsltemmephase 1setup sae alone2g/3g ransgsnggsngwimsltemmeltephase 3unified saeltegw（serving、pdn、ggsn）phase 2sae combine sgsn, ggsn functions，partially connect 2g/3gimslte2g/3g ransgsnggsnsgsn+mmeu planec planeindustrialization strategies core networklte tdd shares the same sae gateway w

15、ith lte fddhuawei technologies co., ltd.huawei confidential page 14sdrgsmlteumtsbts=+=unifiedhardware softwaresystemwimax=gsmumtswimaxlteindustrialization strategies enodeblte tdd shares same sdr hardware platform as lte fdd/ 3g/2gdistributedmacromicrobburrurfuul freqdl freqfull duplex: fddul freqdl

16、 freqhalf duplex: fdddl slotul slothalf duplex: tddofdm modulation enables less receiving signal processing load than cdma; wifi, wimax offers abundant ofdm system experiences;lte tdd has more processing time due to dl/ul timing switching than lte fdd;baseband processors (cpu/dsp/fpga/asic) are beco

17、ming more and more powerful;lte tdd shares same rf modules with wimax;prototypes have verified lte fdd and tdd capabilities in since 2007;huawei technologies co., ltd.huawei confidential page 15industrialization strategiesterminallterminal timeline：test in year 2009wireless data card in year 2010201

18、1handset in year 20112012lterminal capabilitiessupport lte fdd&tddsupport multimode and multibandsupport voipsupport wifi experience at leastltrialsfunctions，performances, network verifications，iot, etc.linitial deploymentdata card is majority2g/3g is dominant，lte tdd is supplementlmedium scale

19、deploymentlte multimode handset becoming popular2012200920102011trialsinitial deploymentinitial deploymentmedium scale medium scale deploymentdeploymentlte terminal tdd stepslte fdd/tdd dual mode should be supported at firsthuawei technologies co., ltd.huawei confidential page 16industrialization strategies chipsetslow cost baseband and rf multimode multiband chipset is a key for both of lte tdd & fddon feb. 07, 2008, q