5G网络切片技术课件

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1NetworkSlicingin5G

NetworkNetworkSlicingin5GNetwork1HUHAIWSIELIICTOECNHSNEOMLICOOGNIEDSUCCOT.O,

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2切片E2E能力：已具备eMBB能力，全业务切片发力R16eMBB切片：空口大带宽切片级优先级调度切片级QoS保障：软隔离资源预留：硬隔离全业务切片mMTC和uRLLC推标R16虚拟专网，按需组合AN：从eMBB到全业务支持切片

TN：大带宽低时延支持切片

CN：服务架构重构，提供切片能力丰富的管道类型VPN+QoS：软隔离FlexE：硬隔离模板3模板1 模板2用户面分布式，使能短时延业务CentralDCLocalDCEdgeDCVPN FlexEHUHAIWSIELIICTOECNHSNEOMLICOOG2HUHAIWSIELIICTOECNHSNEOMLICOOGNIEDSUCCOT.O,

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3切片的SLA保障SLA输入SLA实现Latency:

20msBandwidth:50

MbpsReliability:

99.9999%Users:50

millionIsolation:

low切片设计和订购阶段，完成SLA定义和实例化输入，通过切片模板传递到运行时。Latency:

20msEdge

Local

CenterReliability:

99.9999%MEC部署资源冗余策略部署策略Users:100

million资源规格计算弹性预留量估计Isolation:low共享/独占NF共享/独占公共部件Reliability:

99.9999%Mobility:

NoCharging:

Service-based部件编排Mobility:

No无移动用户管理Charging:

Service-based内容计费Users:50

million大容量用户管理

大容量终端管理信令面双链路配置业务配置与QoS策略Latency:

20msBandwidth:50

MbpsQoS策略Latency:

20ms用户面调度模式控制面快速切换配置SLA监控与闭环SLA监控SLA闭环扩缩容QoS协同接入AMFQoS决策RAN接入AMFSMFUPF主动监控RAN能力开放NFsNEFOTT切片的E2E协同，是通过对切片SLA的输入进行分解和映射，确定部件、QoS策略、部署策略和业务配置，并实施SLA的监控与闭环，从而保证了切片的业务目标实现HUHAIWSIELIICTOECNHSNEOMLICOOG3HUHAIWSIELIICTOECNHSNEOMLICOOGNIEDSUCCOT.O,

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4切片实例是基于网络能力生成的商业应用实例5GeMBB业务mMTC业务URLLC业务VR直播远程控制危险操作兰亭第二现场VR沉浸式体验三一重工提出的远程控制挖掘机现场直播阿里直播对主播体验保障远程医疗郑州大学一附院急求车通信保障智能电网南方电网抄表及调度车联网上海大众汽车辅助及娱乐系统切片实例基本业务

切片模板花椒VR直播HUHAIWSIELIICTOECNHSNEOMLICOOG4HHIUSAILWICEOI

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5ContentE2E切片overview5G

核心网切片（SA2）5G

切片管理（SA5）5G

RAN切片（RAN）Open

discussionHHIUSAILWICEOINTESCEHMNICOOLO5HUHAIWSIELIICTOECNHSNEOMLICOOGNIEDSUCCOT.O,

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62016 2017 2018 2019 2020GlobalLaunchRel-14Rel-165GSA

2.0SARel-15NSAeMBBSlicing/LowLatency/5G

MEC3GPP仅定义MF

Service、服务接口、数据模型，对厂商管理面商业模式带来挑战切片管理需求定义（TS

28.530）生命周期管理NSI/NSSI的创建/修改/销毁/激活/去激活/编排故障管理NSI/NSSI的告警数据上报/监控性能管理NSI/NSSI的性能监控NSI/NSSI的性能任务管理/数据采集/阈值管理配置管理NSI/NSSI中NF实例配置NSI：NetworkSlice

InstanceNSSI：NetworkSliceSubnet

Instance管理面服务化架构（TS

28.533，讨论中）5G

R15标准即将结题，SA5将完成切片管理需求和管理面服务化架构定义HUHAIWSIELIICTOECNHSNEOMLICOOG6Page

73GPP

SA53GPPRAN

2/33GPPSA

2/3ETSI

NFVAccess&Congestion

controlSlice

QoSResource

IsolationL2

SoftAirRANSliceProtocolCustimaizationSlice

MobilityDiscover

andidentify

sliceSliceManagementSliceAwarenessSlice

AssuranceSlice

CustomizationSliceSelectionand

AssociationOneUEMultipleSlices

MgmnCNslice

resourceisolationSlice

SecuritySlice

RoamingProgrammable

UPCustomized

Value-addedNFs(MLAN,App

Mobility)ControlPlaneComponentCustomizationCrossDomain

ArchitectureSliceBlueprint

DefinitionSLAAllocation&

AssuranceTenant

StatisticsCrossDomain

InterfaceOrchestratorMANOVNFManager(s)V

Infra-sManager(s)SouthboundRel-15Rel-15Rel-15Rel16:PhaseII

StandardizationRel15:PhaseI

Standardization2019~2018HUAWEI

Confidential2017HUAWEITECHNOLOGIESCo.,

Ltd.E2E切片3GPP标准进展2018.6Rel-15：完成端到端切片基本流程定义，保证eMBB业务端到端切片Rel-16：定义多种垂直业务，引入网络智能化overviewManagementArchitectureRANsupportingOpen

discussionPage73GPPSA53GPPRAN2/33GPP7HHIUSAILWICEOI

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83GPP作为5G网络架构切片标准定义主体；SA2负责端到端切片架构和流程定义；SA5负责端到端切片管理架构定义；其他SDO以3GPP切片定义为基础进行扩展和增强；SA2SA5networkslicingrelatedvirtualresourcerequirementsRAN3networkslicingrelatedTransport

requirementsBBF/IETFProvidetransportsupportto3GPPdefinednetworkslicingRAN2End-to-endnetworkslicingarchitectureEnd-to-endnetworkslicing

managementSlicing

managementSlicingrelated

terminology5G网络切片标准组织关系NGMN

GSMAOperator

Requirement5GSA5GAAVertical

RequirementSA1SA3SA6Bi-directionalAPIfornetwork

sliceSlice

awarenessin

RANSlicingselectionSlicing

requirementSlicingsecurityandprivacyETSI

NFVProvidevirtualizationsupportto3GPPdefinednetworkslicingoverviewManagementArchitectureRANsupportingOpen

discussionHHIUSAILWICEOINTESCEHMNICOOLO8HHUISAILWICEOI

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9Huawei

ConfidentialSliceInstance

BSlice

supporting

system

(SSS)Network

SliceTemplateDesignerCrossDomainSliceManager(multi-vendor)OSSEMSCN-DSM1:N1:N 1:NSliceInstance

ABSSTerminalAN(1..n)TN(1..n)Edge

DCCore

DCCN(1..n)

APPAPANPartANPartThird-party“BSS”SThird-party“BSS”CommonInfrastructure

LayerE2E

切片架构描述NetworkService

LayerDomain

slice

supporting

system

(DSS)AN-DSM TN-DSMNetworkManagement

LayerBSS

Layer:

Product

design/order

for

industry

tenantNetworkManagement

LayerCross

domain

Slice

Orchestrator

Layer:

E2Eslicedesign,

provision

and

assurance

based

on

SLADomainSliceManagementLayer

:RAN/Transport/CoredomainslicemanagementaccordingtoSLAdecompositionResource

Layer

:Domain

resource

management,

schedulingand

coordination分层架构实现自动闭环切片管`理overviewManagementArchitectureRANsupportingOpen

discussionHHUISAILWICEOINTESCEHMNICOOLO9Page

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ConfidentialE2E切片关键术语3rdPartyAPPCentral

DCiDriveAutopilotCN

Part CN

PartTeslaAutopilotiMAPBMWiDriveiMAPiVideoVLAN1 VLAN2 Transport

NetworkTerminal

1Terminal

2CN

PartCN

PartEdge

DCRAN

PartRAN

Part3rdParty

ServiceAABiVideoBSlicetype=

URLLCBSlicetype=

eMBBTenant：theoperators'customers(for

example,customersfromverticalindustries)ortheoperators

themselvesService:atenantcarriesonavarietyof

services.SliceType:e.g.eMBB,URLLC,mMTC,

FMC...NSSAI=Asetofs-NSSAI(networkslice

instanceselectionassistance

information)s-NSSAI=SST(SliceType)+SDSD：SliceDifferentiator,includestenantinformationE2ESliceInstance(ESI)：AsetofNetworkFunctioninstancesandtherequired

resources(pute,storageandnetworkingresources)whichformadeployedNetworkSlice.AoverviewManagementArchitectureRANsupportingOpen

discussionNetworkSlice=MultipleNetworkSliceInstances.EachS-NSSAIassiststhenetwork

inselectingaparticularNetworkSlice

InstancePage10HUAWEITECHNOLOGIESCo.10HHIUSAILWICEOI

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11ContentE2E切片overview5G

核心网切片（SA2）5G

切片管理（SA5）5G

RAN切片（RAN2/3）Open

discussionHHIUSAILWICEOINTESCEHMNICOOLO11HHIUSAILWICEOI

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12切片标识和切片实例S-NSSAI：网络切片标示符，包括SST（切片类型）和SD（无定义）.标准化SST与相应网络切片特征之间的映射，以确保漫游场景中终端用户的一致性，可能由SA1负责定义S-NSSAI

#1S-NSSAI

#2S-NSSAI

#3Networksliceinstance

#1Networksliceinstance

#2Networksliceinstance

#3Networksliceinstance

#4Slice/Service

typeSST

valueeMBB(enhancedMobile

Broadband)1URLLC(ultra-reliablelowlatency

communications)2MIoT(massive

IoT)3NSSAI(Networksliceselectionassistance

information)S-NSSAI

#1Slice/Service

Type

(SST) SliceDifferentiator

(SD)S-NSSAI

#2S-NSSAI

#3……Networkslice

instance

#5 S-NSSAI

#4overviewManagementArchitectureRANsupportingOpen

discussionHHIUSAILWICEOINTESCEHMNICOOLO12Page

13切片划分建议：按业务分类，按垂直厂商形成实例一类业务对应一个切片类型（切片模板）车载设备IoT终端移动终端ANTNANTNCN基本功能上网语音视频能源抄表辅助驾驶移动终端移动终端语音可靠性高带宽基本功能基本功能++省电版基本功能基本功能

+低时延针对一个租户，使用切片模板产生切片实例一个切片类型可以产生一个或者多个切片实例车载设备辅助驾驶ForBMW车载

设备 辅助驾驶For

VW能源抄表For

水厂能源抄表For

电厂IoT终端IoT移动

终端 切片数量相关的标准定义：切片标识（S-NSSAI）长度为4

byte。包括：SST(Slice/Service

Type)

：

1byte，类型，目前定义了eMBB，uRLLC，MIoT三类SD(slice

Differentiator)

：3byte，细分同个SST中的切片实例，例如租户信息每个用户最多支持8个切片的业务HUAWIHSEILIICTECONHSNEOMLICOOGNIEDSUCCOTO.,

LRTD.视频

For

合作OTT

切片实例3切片实例n.

终端 . ....移动

终端 语音业务 切片实例2移动

终端 上网业务 切片实例1其他可能的应用场景：低抖动工业控制，公共灾害告警，监控视频，救护车医疗……数量多差异化定制多差异化定制多E2E隔离要求高Page13切片划分建议：按业务分类，按垂直厂商形成实例一13HHIUSAILWICEOI

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14会话建立过程中的切片选择AMFUPFNRFDN1DN2SMFNS

#1UPFNRFSMFUPFSMF1.PDUsessionEst.Req(S-NSSAI,DNN,

etc)3.SMFdiscovery(S-NSSAINSIID)4.PDUsessionEst.

Req5.PDUsession

Est.6b.PDUsessionEst.Rsp(S-NSSAI,DNN,

etc)6a.Sessioninfo(S-NSSAI)APP-A APP-B…NetworkSlicingSelection

Policy(NSSP)Default

rule-S-NSSAI

1NSSPrule

1App-AS-NSSAI

1NSSPrule

2App-BS-NSSAI

2NSSPrule

3…..NS

#2NS

#3会话管理不同切片的会话管理控制面隔离AMF和SMF解耦不同切片的会话管理用户面隔离不同切片的UPF相互独立会话不能在不同切片之间迁移NSSF2.NSIselection([NSIID],

NRF)overviewManagementArchitectureRANsupportingOpen

discussionHHIUSAILWICEOINTESCEHMNICOOLO14HHIUSAILWICEOI

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15ContentE2E切片overview5G

核心网切片（SA2）5G

切片管理（SA5）5G

RAN切片（RAN2/3）Open

discussionHHIUSAILWICEOINTESCEHMNICOOLO15Huawei

ConfidentialHUAWEI

TECHNOLOGIES

CO.,LTD. 16网络切片管理SA5-研究概况Slice

designDesign

a

network

slice

to

meet

certain

network

characteristics

required

by

an

end-user

service

or

a

business

service,

including

serviceinstance

and

network

slice

(subnet)

template

design

and

managementSlice

managementControl

and

manage

the

network

slice,including

the

lifecycle

management

(e.g.

creation,

termination),

slice

monitoring

and

a

ssurance(e.g.

performance

and

fault

monitoring),

and

network

slicing

management

architectureSlice

orchestrationOrchestration

of

the

components

of

the

network

slice,

including

the

shared

slice

instance

management,

orchestration

of

slices

acrossmultipleoperators,

end-to-end

network

slice

orchestration

and

coordination

between

3GPP

and

non-3GPP

management

systemsSlice

automationApply

SON

concept

for

network

slicing

management,

including

slice

instance

automated

healing

and

optimizationSlicemanagement

andorchestrationSlice

designService Template LCMSlicemanagementFM/PMArchitectureSlice

orchestrationSlicesharingMulti-operatororchestrationE2EcoordinationSlice

automationAuto-healingAuto-optimizationoverviewManagementArchitectureRANsupportingOpen

discussionHuaweiConfidentialHUAWEITECH16HHIUSAILWICEOI

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17E2E网络切片管理-SA5overviewManagementArchitectureRANsupportingOpen

discussionSlice

ProvisioningSliceDesign(Slice

Template)TenantCrossdomain

slice(multi-vendmanageror)VendorCapabilitySLA

informationNetworkSliceTemplate

DesignerNSMFNSSMFTN-NSSMFCN-NSSMFAN-NSSMFCustomized

Slice

template

and

agile

on-boardingSharingand/orisolationincloud

infrastructureSupporting

Vertical

Requirements

bymanagement

InterfaceMappingofservice

modelandnetwork

resourcemodelClosed-loopautomation

ofslice

subnetSlicedesignandtemplate->Multipleservices,slicetemplate

assemblyServicebasedmanagementinterface

(Service,Network)->Providingprogramming

API

capabilityClosed-loop

automation->Automatedadjustmentaccordingtoservices

experienceHHIUSAILWICEOINTESCEHMNICOOLO17Page

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ConfidentialSSSE2E

OrchestratorE2E

切片业务流设计和规划5G

RANTransportCore5GRAN

DSMTransport

DSMCN

DSMSlice

DesignOfferingDesignSlice

AssuranceOffering

OrderSlice

ProvisionE2E

SliceAggregation①②③④IF-MSM-RANIF-MSM-CNIF-BSMIF-TRANS⑤Slice

Monitor①查询域切片定义模板到E2E

Orchestrator（包括域切片类型和对应的SLA范围）;②

将单域切片定义集成到E2E切片定义中;③

导入E2E切片定义模板;④

设计特定的E2E切片满足具有拖放功能GUI的要求（包括初始延迟配额和调整优先级）上，将模板保存到E2E编排器中;⑤

向BSS层导入新的切片类型，支持Offering

Design;Designnetworkslicesaccordingtothe

networkcapabilitiesandSLA

requirements.Application/Business

LayeroverviewManagementArchitectureRANsupportingOpen

discussionPage18HUAWEITECHNOLOGIESCo.18Page

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ConfidentialE2E

切片业务流

之

切片部署overviewManagementArchitectureRANsupportingOpen

discussion①

BSS触发NSI的生成②

跨域切片管理器定义E2E切片：根据服务类型选择Slice模板基于位置和切片模板的切片拓扑设计切片功能根据SLA和网络功能进行定义将SLA分解到不同的域，并与相关域进行协商③

跨域切片管理器从每个MBB

/

FBB域切片管理订阅域KPI;

每个MBB

/

FBB域切片管理器报告部署进度。④

RAN

/传输/核心网功能和资源编排Page19HUAWEITECHNOLOGIESCo.19HHIUSAILWICEOI

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20ContentE2E切片overview5G

核心网切片（SA2）5G

切片管理（SA5）5G

RAN切片（RAN）Open

discussionHHIUSAILWICEOINTESCEHMNICOOLO20Page

21HUAWEITECHNOLOGIESCo.,

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Confidential基于切片的RAN

NumerologyHardRadio

SlicingSoftRadio

SlicingElasticcapacityforeachsliceto

enhanceusageofnetwork

resourceFlexiblesub-carrier

bandwidthFlexibleair

interfaceFlexiblesub-carrierbandwidth,CPandTTI

designedtomeetdifferentrequirementof

servicesSmart

HomeAR/VRV2XTimeFrequencyFlexible

TTIFrequencyTIMETimeIndependentResourceSharedResource1)eMBB,uRLLC,

Idle2)eMBBidle,uRLLC

CongestionSchedulemoreresourcefor

platooning3)eMBBanduRLLC

CongestionAdjusttheallocationproportionoverviewManagementArchitectureRANsupportingOpen

discussionPage21HUAWEITECHNOLOGIESCo.21HUUAWWEEIITECHNOOLLOOGIESCCoO..,,LtTdD.

.HUAHWuEaIwCeoinCfoidnefindteianltialGenerally

principlesAnetworkslicealwaysconsistsofaRANpartandaCN

partNetworkcanrealisethedifferentnetworkslicesbyschedulingandalsobyprovidingdifferentL1/L2

configurationsWhile

the

network

can

support

large

number

of

slices

(hundreds),

the

UE

need

not

support

more

than

8slicessimultaneously技术点当前R15标准进展后续计划RAN感知切片RAN2同意基于会话粒度的切片感知，RAN将根据切片的配置信息，根据实现满足UE支持的切片SLA需求N/AAMF选择RAN2同意Msg5携带切片信息，具体的消息内容待讨论RAN3同意NG口交互切片信息Rel-15:

RAN2定义具体的切片信息(Msg3和Msg5)切片感知的切换RAN3同意相邻基站间交互切片信息，用于目的基站选择，从而启动Xn、NG切换流程Rel-15：RAN3定义Xn/NG切换信令中携带具体的切片信令和原因QoS保障RAN2同意新定义SDAP层支持切片内QoS

Flow到DRB映射Rel-15:

RAN2定义具体的SDAP格式切片感知的空闲态/inactiveUE接入控制：

基于Category

ID小区重选：沿用LTE方案，其他方案待定Rel-15：RAN2接入控制/小区重选考虑切片信息RAN

part

切片选择RAN基于实现，对标准无影响N/A切片区域化部署SA2/RAN同意UE注册区域内支持切片不变Rel-16：更小粒度的切片部署RAN

part

切片ID后续讨论Rel-16：引入RAN

part

ID用于RAN处理Page

22overviewManagementArchitectureRANsupportingOpen

discussionRAN切片R15HUUAWWEEII22HUUAWWEEIITECHNOOLLOOGIESCCoO..,,LtTdD.

.HUAHWuEaIwCeoinCfoidnefindteianltialSupportofNetworkSlicingreliesontheprinciplethattraffic

fordifferentslicesishandledbydifferentPDU

sessions.DifferentDRBsareconfiguredfordifferent

slicesNetworkcanrealisethedifferentnetworkslicesbyschedulingandalsobyprovidingdifferentL1/L2

configurationseMBBslicesareconfiguredwithfullL2protocolstackand

allfunctionalitiesuRLLCslicesarewithpacketduplicationinL2andshort

TTInumerology

mappingmMTCslicesmaynotbeconfiguredwithPDCP

layerCustomizedprotocolstacksandproceduresadaptingto

differentslices

featuresPage

23RAN切片-QoS保障overviewManagementArchitectureRANsupportingOpen

discussion–

Slice#2UPFRadio NG-U

NG-RAN

5GC

UE NB UPF-

Slice#1PDU

Session

–

Slice#1Radio

Bearer NG-U

TunnelQoS

FlowQoS

FlowRadio

BearerQoS

FlowPDU

Session

–

Slice#2Radio

BearerNG-U

TunnelQoS

FlowP-GWS-GWPeerEntityUEeNBEPS

BearerRadio

BearerS1

BearerEnd-to-end

ServiceExternal

BearerRadioS5/S8S1

E-UTRAN

EPC

InternetGiE-RABS5/S8

BearerLTE

QoS5G

QoSQoSfeaturesin

NRQoSfeaturein

LTE1EndtoEnd:QoSflow

granularityUuinterface:DRB

granularityEndtoEnd:EPS

bearerUuinterface:DRB

granularity2M:1QoSflowtoDRB

mapping1:1EPSbearertoDRB

mapping3Support

both

AS

reflective

QoS

andNASreflective

QoSN/A4NewSDAP

layerN/AHUUAWWEEII23Page

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Confidential切片定制：差异化协议栈配置和功能部署Slicespecificprotocolstacksandalgorithmsachieveondemandsliceandreduce

TTMSlicespecificprotocol

stacksmMTCeMBBuRLLCRLCMACPHYRRCPDCPRLCMACPHYRRCmMTCuRLLCeMBBRRUCNRFRFRF

CP

UP RRC

1PDCP

2PDCP

3RLC12Optionalhead

compressionFlexible

deployment3Optional

mobility

functionreducefunctioncomponentsthattheslicesneedn’t,reducewasteof

resourcesMinimumfunctionofoneslice,onlykeepnecessarycomponents,reducefailure

probabilitySimplifyOMof

SliceRegional

DCLocalDCCentralOfficeRemoteSiteRFLocationSlice#3(uRLLC

)CN-Common-CPCN-CP#1CN-CP#2CN-CP#3CN-UP#1CN-UP#2RAN-ACCRAN-ACU#1RAN-RACRAN-RAURAN-ACU#2RAN-ACU#3CN-UP#3RFRAN-RACRAN-RAURFSliceondemand

deploymentSlice

#1(eMBB) Slice

#2(mMTC)Note：ACC：AccessConvergenceControlplane，ACU：AccessConvergence

Userplane,RAC：Radio

Access

Controlplane, RAU：RadioAccess

Userplane.overviewManagementArchitectureRANsupportingOpen

discussionPage24HUAWEITECHNOLOGIESCo.24HUHAIWSIELIICTOECNHSNEOMLICOOGNIEDSUCCOT.O,

LRTD.Page

25版本版本状态支持功能19BPlanning定位:支撑E2E切片测试支持E2E切片：RAN切片对接NGC切片RAN切片与传输切片对接切片SLA：支持KPI

SLA监控支持eMBB业务类型的切片低时延切片切片运维：1. RAN切片配置和可视（OSS）20ATobe

Planned支持E2E切片：单UE支持多切片简单切片移动性切片SLA：空口体验速率保障：切片级SLA差异化调度空口资源保障：PRB资源硬隔离低时延切片增强闭环管控：RAN内SLA的闭环管控版本思考及研讨HUHAIWSIELIICTOECNHSNEOMLICOOG25Copyright©2015HuaweiTechnologiesCo.，Ltd.AllRights

Reserved.Theinformationinthisdocumentmaycontainpredictivestatementsincluding，withoutlimitation，statementsregardingthefuturefinancialandoperatingresults，futureproductportfolio，newtechnology，etc.Thereareanumberoffactorsthatcouldcauseactualresultsanddevelopmentstodiffermateriallyfromthoseexpressedorimpliedinthepredictivestatements.Therefore，suchinformationisprovidedforreferencepurposeonlyand

constitutesneitheranoffernor

an

acceptance.Huaweimaychangetheinformationatanytimewithout

notice.Copyright©2015HuaweiTechnolo26Page

27HUAWEITECHNOLOGIESCo.,

Ltd.HUAWEI

Confidential华为/BMW/CMCC《可保证的端到端网络切片服务白皮书》Networkslicingisthecollectionofasetoftechnologiestocreatespecialized,dedicatedlogicalnetworksasaservice(NaaS)insupportofnetworkservicedifferentiationandmeetingthediversifiedrequirementsfromverticalindustries.Throughflexibleandcustomizeddesignoffunctions,isolationmechanisms,andO&Mtools,networkslicingiscapabletoprovidelogicaldedicatednetworksuponacommoninfrastructure.网络切片是针对业务差异化、多租户需求提供的一类解决方案技术的统称，通过功能、性能、隔离、运维等多方面的灵活设计，使得运营商能够基于垂直行业的需求创建定制化的网络。Thenetworkslicingconceptconsistsof3layers:1)ServiceInstanceLayer,2)NetworkSliceInstance

Layer,and3)Resource

layer.网络切片概念由3层组成：1）服务实例层，2）网络层实例层，3）资源层。DescriptionofNetworkSlicingConceptbyNGMN

AllianceNetworkSlice:Alogicalnetworkthatprovidesspecificnetworkcapabilitiesandnetwork

characteristics.网络切片：提供特定网络功能和网络特性的逻辑网络NetworkSliceinstance:AsetofNetworkFunctioninstancesandtherequiredresources(e.g.

compute,storageandnetworkingresources)whichformadeployedNetwork

Slice.3GPPTS23.501SystemArchitectureforthe5G

SystemE2E网络切片定义overviewManagementArchitectureRANsupportingOpen

discussionPage27HUAWEITECHNOLOGIESCo.27空口时延：占比E2E时延约50%，达标良好体验要求空口时延<50mseNBUE3.00

3.183.724.204.25

4.53

4.76

4.98

5.106.43

6.86

7.107.10南昌北京石…杭州太原福州武汉重庆呼…长春吉…郑州包头eNB->SGW平均时延0ms（华北）~20ms（华东）传输时延3~7ms空口时延要求<50ms正常情况：57.2560.0958.4841.1852.1129.25

3.6542.6545.2546.8148.3848.0229.7444.1434.1812.73215.7187.25

18.9529.53

28.2717.77931.4530.7

36.8636.74长…吉…哈…北…石…郑…杭…南…上…武…南…福…广…重…GW->南京/上海服务器时延对比南京服务器东北 北华东33%8%20~40ms5%恶化情况：>200ms2%空口容量20%%180%%

1142%%1168%%

2220%%2246%%3208%%32%0-1070-80140-150210-220280-290350-360420-430500-510600-6103346%% 平均用户数

vs

卡顿

占比

平均值项:一周严重卡顿局…64%%卡顿率<7%0200400600-120-112-105-98-93-88-83-78-73-68-62-57RSRP

vs

时延0200400-20-11-7-31591317212535600

SINR

vs

时延用户>200，卡顿率不达标中 南 西负载>70%，卡顿率不达标RSRP<-100dBm，体验恶化

RSRP<-110dBm，时延陡增

良好：E2E时延<100msSINR<-7dB，时延陡增SINR<-7dB，体验恶化4%2%0%12%10%8%6%0-210-1220-2230-3240-4250-5260-6270-7280-8290-92下行PRB利用率

vs

卡

平均值项:一周严重卡顿局…

顿占比 卡顿率<7%服务器王者荣耀服务器部署在南京和上海~

60ms（东北）核心网时延

~4 S/PGW通常E2E时延为110ms，

空口时延占比约50%；时延恶化时>200ms，主要为空口的额外贡献空口时延：占比E2E时延约50%，达标良好体验要求空口时延<28示例：卡顿率=(0*1000+0.2*10+0.5*2+0.7*10+1*2)/(1000+10+2+10+2)=1.17%网络扩容指标：从传统资源利用率（RRC、PRB及忙时流量）到基站卡顿率20%25%卡顿率

=∑

数量*权重/总包量

卡顿率0% 5% 10% 15%无卡顿 轻微卡顿 一般卡顿 较严重卡顿严重卡顿卡顿局点联通与腾讯联合定义王者荣耀游戏体验KQI，

E2E业务时延体验<150ms，卡顿率<5%

成为业务体验的关键卡顿定义：腾讯对每局所有包的RTT进行抽样，所得结果越高，越卡顿，高于15%计为严重卡顿局。新网络评估指标：卡顿率基站比例>7%集团对省份严重卡顿基站占比给予预警：省级每次上榜1张红牌市区县每上榜省份1张黄牌5张黄牌累计

1张红牌严重卡顿基站定义

=（周局数>70

且

周卡顿局数比例>7%）的小区数

/

全省小区数严重卡顿基站占比=

严重卡顿基站数/该区域总基站数集团扩容门限三个条件同时满足数据热点、高价值业务场景、人口密集场景结合2I2C用户转网，重点考虑2I2C高业务区域当前扩容标准：RRC用户数、PRB利用率、忙时流量时延区间(ms)权重包量(示例)<10001000100～2000.210200～3000.52300～4600.710460+12【腾讯王卡】基站卡顿率通报0215-0221省市严重卡顿基站占比严重卡顿基站数环比环比地市TOP3甘肃8.50%16206.9pp临夏定西酒泉21.84%9.03%8.93%河北4.12%36923.67pp邯郸邢台唐山35.38%0.74%0.73%四川2.03%1553-1.36pp达州巴中广安10.35%4.68%3.81%站型带宽RRC连接数小区PDCP流量PRB利用率宏站20M>50>8GB>50%室分10M>20>3.5GB>50%20M>30>7GB>50%示例：卡顿率=(0*1000+0.2*10+0.5*2+0.29王者荣耀：良好用户体验要求E2E时延小于100ms业务流TCPUDP作用玩家信息刷新，图片下载对战游戏指令流量要求~3kbps~65kbps时延要求不敏感敏感良好一般卡顿作为丢包<100ms<200ms<300ms<460msUDP信令时延要求王者荣耀业务架构加权统计为卡顿王者荣耀：良好用户体验要求E2E时延小于100ms业务流TC30新手游要求E2E时延小于20~50ms，现有4G网络架构难以满足最小20ms ~6ms最小20ms18~19年对战游戏良好体验要求50ms，20+年游戏要求20ms2016~2017粗粒度操控基础体验：<200ms良好体验：<100ms2020+沉浸体验，无眩晕<20ms

现有架构，商用场景难以满足E2E

50ms时延要求 游戏商下沉服务器2018~2019精准操控基础体验：<100ms良好体验：<50ms服务器

P-GWeNB UE策略游戏对战游戏准AR/VR实时游戏本地时延小于20ms仅9.8%比例小于20ms新手游要求E2E时延小于20~50ms，现有4G网络架构难以31空口时延要求小于50ms，E2E占比约50%，是影响用户体验关键因素服务器20~60ms~6msP-GWeNBUE说明：王者荣耀服务器部署在南京和上海空口时延要求<50ms，占E2E时延约50%东北时延最大：~60ms华东时延最小：~20ms100ms20~200ms空口时延要求小于50ms，E2E占比约50%，是影响用户体验32负载、覆盖和干扰是造成空口时延过大的主要因素容量覆盖质差上行干扰其他负载、覆盖和干扰是造成手游卡顿主要因素

高负载：37.6%，弱覆盖：29.0%，干扰：16.1%王者荣耀卡顿原因分布5.38%17.20%37.63%10.75%29.03%0%45%87%75%91%93%94%94%95%100%0.00%10%

20.00%60.00%100.00%80.00%120.00%40.00%100008000700060005000400030002000102030405060708090100>100样本数空口时延（ms）空口平均时延49.3ms，13.2%比例超过50ms空口时延分布说明：数据采用某C城市负载、覆盖和干扰是造成空口时延过大的主要因素容量覆盖质差33采样范围：对安卓客户端对局进行信息采集，包括：时延、信号格数、终端IMEI、经纬度、ENBID、CELLID采集方式：信号格数、经纬度、ENBID、CELLID在每局游戏开始前采集一次时延抽样：在游戏中每5s采集一次（与游戏显示2s不一致）

卡顿定义：腾讯对每局所有包的RTT延迟进行抽样，根据落入以下<100,100-200,200-300,300-460，>460

5个区间的采样点数进行计算，计算公式为：每个区间包的数量*权重/总包量，所得结果越高，越卡顿，高于15%计为严重卡顿局。小区卡顿占比=一天内卡顿局数/一天内总局数一周内严重卡顿小区占比：(一周局数>70，且高卡顿局比例>7%)的小区数/全省小区数条件：剔除7天局数都<5的小区时间粒度：每周一次集团通报中的定义王者荣耀卡顿定义游戏体验优化方向主要集中在