5G NR and Enhancements: From R15 to R16

1069 Pages·2021·21.423 MB·English

by  Hai Tang, Ning Yang, Zhi Zhang, Zhongda Du, Jia Shen

5G NR and
Enhancements
This pageintentionallyleftblank
5G NR and
Enhancements
From R15 to R16
Editedby
JIA SHEN
Standard Research Department, OPPO Research
Institute, Shenzhen,China
ZHONGDA DU
Standard Research Department, OPPO Research
Institute, Shenzhen,China
ZHI ZHANG
Standard Research Department, OPPO Research
Institute, Shenzhen,China
NING YANG
Standard Research Department, OPPO Research
Institute, Shenzhen,China
HAI TANG
Vice presidentof OPPO Research Institute,
Shenzhen,China
Elsevier
Radarweg29,POBox211,1000AEAmsterdam,Netherlands
TheBoulevard,LangfordLane,Kidlington,OxfordOX51GB,UnitedKingdom
50HampshireStreet,5thFloor,Cambridge,MA02139,UnitedStates
Copyright©2022ElsevierInc.Allrightsreserved.
Nopartofthispublicationmaybereproducedortransmittedinanyformorbyanymeans,
electronicormechanical,includingphotocopying,recording,oranyinformationstorageand
retrievalsystem,withoutpermissioninwritingfromthepublisher.Detailsonhowtoseek
permission,furtherinformationaboutthePublisher’spermissionspoliciesandour
arrangementswithorganizationssuchastheCopyrightClearanceCenterandtheCopyright
LicensingAgency,canbefoundatourwebsite:www.elsevier.com/permissions.
Thisbookandtheindividualcontributionscontainedinitareprotectedundercopyrightby
thePublisher(otherthanasmaybenotedherein).
Notices
Knowledgeandbestpracticeinthisfieldareconstantlychanging.Asnewresearchand
experiencebroadenourunderstanding,changesinresearchmethods,professionalpractices,
ormedicaltreatmentmaybecomenecessary.
Practitionersandresearchersmustalwaysrelyontheirownexperienceandknowledgein
evaluatingandusinganyinformation,methods,compounds,orexperimentsdescribed
herein.Inusingsuchinformationormethodstheyshouldbemindfuloftheirownsafety
andthesafetyofothers,includingpartiesforwhomtheyhaveaprofessionalresponsibility.
Tothefullestextentofthelaw,neitherthePublishernortheauthors,contributors,or
editors,assumeanyliabilityforanyinjuryand/ordamagetopersonsorpropertyasamatter
ofproductsliability,negligenceorotherwise,orfromanyuseoroperationofanymethods,
products,instructions,orideascontainedinthematerialherein.
BritishLibraryCataloguing-in-PublicationData
AcataloguerecordforthisbookisavailablefromtheBritishLibrary
LibraryofCongressCataloging-in-PublicationData
AcatalogrecordforthisbookisavailablefromtheLibraryofCongress
ISBN:978-0-323-91060-6
ForInformationonallElsevierpublications
visitourwebsiteathttps://www.elsevier.com/books-and-journals
Publisher:GlynJones
EditorialProjectManager:NaomiRobertson
ProductionProjectManager:KameshRamajogi
CoverDesigner:GregHarris
TypesetbyMPSLimited,Chennai,India
Contents
Listofcontributors xix
Preface xxiii
1. Overview 1
JinxiSu,JiaShen,WendongLiuandLiGuo
1.1 Introduction 1
1.2 EnhancedevolutionofnewradiooverLTE 3
1.2.1 Newradiosupportsahigherbandrange 4
1.2.2 Newradiosupportswidebandwidth 5
1.2.3 Newradiosupportsmoreflexibleframestructure 5
1.2.4 Newradiosupportsflexiblenumerology 6
1.2.5 Low-latencyenhancementsofairinterfacebynewradio 7
1.2.6 Enhancementofreferencesignalsinnewradio 8
1.2.7 Multipleinputmultipleoutputcapabilityenhancement
bynewradio 9
1.2.8 Enhancementofterminalpowersavingbynewradio 10
1.2.9 Mobilityenhancementbynewradio 12
1.2.10 Enhancementofqualityofserviceguaranteebynewradio 13
1.2.11 Enhancementofcorenetworkarchitectureevolution
bynewradio 14
1.3 Newradio’schoiceofnewtechnology 15
1.3.1 Newradio’schoiceonnewnumerology 16
1.3.2 Newradio’schoiceonnewwaveform 17
1.3.3 Newradio’schoiceonnewcoding 21
1.3.4 Newradio’schoiceonnewmultipleaccess 22
1.4 Maturityof5Gtechnology,devices,andequipment 24
1.4.1 Thedevelopmentandmaturityofdigitaldevicesandchips
havewellsupportedtheresearchanddevelopment
needsof5Gequipment 24
1.4.2 5Gactivelarge-scaleantennaequipmentcanmeetthe
engineeringandcommercialrequirements 25
1.4.3 Millimeterwavetechnology—devicesandequipmentare
becomingmoreandmoremature 27
1.5 R16enhancementtechnology 29
1.5.1 Multipleinputmultipleoutputenhancement 29
1.5.2 Ultrareliableandlowlatencycommunications
enhancement-physicallayer 31
v
vi Contents
1.5.3 Ultrareliableandlowlatencycommunicationsenhancement
highlayer 32
1.5.4 UEpower-savingenhancement 33
1.5.5 Two-stepRACH 33
1.5.6 Uplinkbandswitchingtransmission 33
1.5.7 Mobilityenhancement 34
1.5.8 Multi-RATdualconnectivityenhancement 35
1.5.9 Newradio(cid:1)vehicletoeverything 36
1.5.10 Newradio-unlicensed 36
1.6 Summary 37
References 38
2. Requirementsand scenarios of5G system 41
WenqiangTianandKevinLin
2.1 Currentneedsandrequirementsinthe5Gera 41
2.1.1 Requirementsofhighdatarate 41
2.1.2 Requirementsfromverticalindustries 43
2.2 Typicalscenarios 44
2.2.1 Enhancedmobilebroadband 45
2.2.2 Ultrareliableandlowlatencycommunications 46
2.2.3 Massivemachinetypecommunications 46
2.3 Keyindicatorsof5Gsystems 47
2.4 Summary 51
References 51
3. 5G system architecture 53
JianhuaLiu,NingYangandTricciSo
3.1 5Gsystemarchitecture 53
3.1.1 5Gsystemarchitecturerequirements 53
3.1.2 5Gsystemarchitectureandfunctionalentities 56
3.1.3 5Gend-to-endarchitectureandprotocolstackbasedon
3rdGenerationPartnershipProjectaccess 60
3.1.4 5Gend-to-endarchitectureandprotocolstackbasedon
non-3rdGenerationPartnershipProjectaccess 62
3.1.5 5Gsystemidentifiers 64
3.2 The5GRANarchitectureanddeploymentoptions 69
3.2.1 DescriptionofEN-DCandSAarechitecture 75
3.3 Summary 82
References 82
Furtherreading 83
Contents vii
4. Bandwidth part 85
JiaShenandNandeZhao
4.1 Basicconceptofbandwidthpart 85
4.1.1 Motivationfromresourceallocationswithmultiplesubcarrier
spacings 86
4.1.2 MotivationsfromUEcapabilityandpowersaving 89
4.1.3 Basicbandwidthpartconcept 92
4.1.4 Usecasesofbandwidthpart 93
4.1.5 Whatifbandwidthpartcontainssynchronizationsignal/physical
broadcastchannelblock? 95
4.1.6 Numberofsimultaneouslyactivebandwidthparts 96
4.1.7 Relationbetweenbandwidthpartandcarrieraggregation 98
4.2 Bandwidthpartconfiguration 101
4.2.1 IntroductionofcommonRB 101
4.2.2 GranularityofcommonRB 102
4.2.3 Referencepoint—pointA 104
4.2.4 ThestartingpointofcommonRB—RB0 109
4.2.5 Indicationmethodofcarrierstartingpoint 109
4.2.6 Bandwidthpartindicationmethod 110
4.2.7 Summaryofthebasicbandwidthpartconfigurationmethod 111
4.2.8 Numberofconfigurablebandwidthparts 113
4.2.9 BandwidthpartconfigurationintheTDDsystem 115
4.3 Bandwidthpartswitching 117
4.3.1 Dynamicswitchingversussemistaticswitching 117
4.3.2 IntroductionofbandwidthpartactivationmethodbasedonDCI 118
4.3.3 DCIdesignfortriggeringbandwidthpartswitching—DCIformat 119
4.3.4 DCIdesignfortriggeringbandwidthpartswitching—“explicitly
trigger”versus“implicitlytrigger” 123
4.3.5 DCIdesignfortriggeringbandwidthpartswitching—bandwidth
partindicator 125
4.3.6 Introductionoftimer-basedbandwidthpartfallback 127
4.3.7 Whethertoreusediscontinuousreceptiontimertoimplement
bandwidthpartfallback? 131
4.3.8 Bandwidthpartinactivitytimerdesign 135
4.3.9 Timer-baseduplinkbandwidthpartswitching 138
4.3.10 Time-pattern-basedbandwidthpartswitching 139
4.3.11 Automaticbandwidthpartswitching 143
4.3.12 Bandwidthpartswitchingdelay 145
4.4 Bandwidthpartininitialaccess 148
4.4.1 IntroductionofinitialDLbandwidthpart 148
viii Contents
4.4.2 IntroductionofinitialULbandwidthpart 152
4.4.3 InitialDLbandwidthpartconfiguration 154
4.4.4 RelationshipbetweentheinitialDLbandwidthpartanddefault
DLbandwidthpart 159
4.4.5 Initialbandwidthpartincarrieraggregation 160
4.5 Impactofbandwidthpartonotherphysicallayerdesigns 161
4.5.1 Impactofbandwidthpartswitchingdelay 161
4.5.2 Bandwidthpart-dedicatedandbandwidthpart-common
parameterconfiguration 162
4.6 Summary 163
References 163
5. 5G flexiblescheduling 167
YananLin,JiaShenandZhenshanZhao
5.1 Principleofflexiblescheduling 167
5.1.1 LimitationofLTEsystemschedulingdesign 167
5.1.2 Schedulingflexibilityinthefrequencydomain 169
5.1.3 Schedulingflexibilityinthetimedomain 171
5.2 5Gresourceallocation 176
5.2.1 Optimizationofresourceallocationtypesinthe
frequencydomain 177
5.2.2 Granularityofresourceallocationinthefrequencydomain 181
5.2.3 Frequency-domainresourceindicationduringBWPswitching 185
5.2.4 Determinationoffrequency-hoppingresourcesinBWP 188
5.2.5 Introductiontosymbol-levelscheduling 194
5.2.6 Referencetimeforindicationofstartingsymbol 196
5.2.7 ReferenceSCSforindicationofK orK 199
0 2
5.2.8 Resourcemappingtype:typeAandtypeB 200
5.2.9 Time-domainresourceallocation 202
5.2.10 Multislottransmission 210
5.3 CodeBlockGroup 214
5.3.1 IntroductionofCodeBlockGrouptransmission 214
5.3.2 CBGconstruction 216
5.3.3 CBGretransmission 217
5.3.4 DLcontrolsignalingforCBG-basedtransmission 219
5.3.5 ULcontrolsignalingforCBG-basedtransmission 219
5.4 DesignofNRPDCCH 223
5.4.1 ConsiderationsofNRPDCCHdesign 223
5.4.2 ControlResourceSet 226
5.4.3 Search-spaceset 236
Contents ix
5.4.4 DCIdesign 241
5.5 DesignofNRPUCCH 249
5.5.1 Introductionofshort-PUCCHandlong-PUCCH 249
5.5.2 Designofshort-PUCCH 250
5.5.3 Designoflong-PUCCH 253
5.5.4 PUCCHresourceallocation 257
5.5.5 PUCCHcollidingwithotherULchannels 261
5.6 FlexibleTDD 264
5.6.1 Flexibleslot 264
5.6.2 Semistaticuplink(cid:1)downlinkconfiguration 266
5.6.3 Dynamicslotformatindicator 269
5.7 PDSCHratematching 270
5.7.1 Considerationsforintroducingratematching 270
5.7.2 Rate-matchingdesign 274
5.8 Summary 279
References 279
6. NR initial access 283
WeijieXu,ChuanfengHe,WenqiangTian,RongyiHuandLiGuo
6.1 Cellsearch 284
6.1.1 Synchronizationrasterandchannelraster 284
6.1.2 DesignofSSB 290
6.1.3 TransmissionofSSB 295
6.1.4 PositionofactuallytransmittedSSBsandindicationmethods 300
6.1.5 Cell-searchprocedure 303
6.2 Commoncontrolchannelduringinitialaccess 308
6.2.1 SSBandCORESET#0multiplexingpattern 309
6.2.2 CORESET#0 313
6.2.3 Type0(cid:1)PDCCHsearchspace 316
6.3 NRrandomaccess 320
6.3.1 DesignofNRPRACH 320
6.3.2 NRPRACHresourceconfiguration 326
6.3.3 PowercontrolofPRACH 332
6.4 RRMmeasurement 334
6.4.1 ReferencesignalsforRRM 335
6.4.2 MeasurementgapinNR 337
6.4.3 NRintrafrequencyandinterfrequencymeasurement 346
6.4.4 SchedulingrestrictionscausedbyRRMmeasurement 354
6.5 Radiolinkmonitoring 356