苏鑫：智能超表面商用化考量

智能超表面商用化考量 CommercializationConsiderationsforRIS 苏鑫 SuXin 中国移动研究院 ChinaMobileResearchInstitute 2023年12月6日 智能超表面应用场景 典型场景下性能效果智能超表面的商用挑战 UsageScenarios Performance CommercialChallenges 面向低功耗和易部署的智能超表面设计 Low-PowerandEasilyDeployableDesignforRIS 总结 Summary 智能超表面应用场景UsageScenarios 原理将原有自然不可控电磁传播环境变为人为可控的电磁传播环境 PrincipleTurningtheoriginalnaturaluncontrollableelectromagneticpropagationenvironmentintoanartificiallycontrollableone 场景Scenarios •提升传统网络性能：覆盖补盲，上行增强，室内覆盖增强，小区容量增强/热点增流 Enhancetraditionalnetworkperformance:blindcoverage,uplinkenhancement,indoorcoverageenhancement,capacityenhancement/hotspot •催生更多新型应用：低空航路/车联网覆盖，感知和高精度定位，安全通信，能量收集…… Spawningmorenovelapplications:lowaltitudeairway/vehiclenetworkcoverage,sensingandhighprecisionlocalization,securecommunications,energy harvesting 智能反射面 x 基站智能反射面 室内 用户 blindcoverage uplinkenhancement 智能反射面 航路覆盖 车联网覆盖 lowaltitudeairway/vehiclenetworkcoverage 覆盖补盲上行增强 室内覆盖增强热点增流 窃听者 indoorcoveragehotspot 高精度定位 安全通信 highprecisionlocalizationsecurecommunications2 阶段典型应用 商用需求 CommercialRequirements方案策略 Stages 1 Typicalapplications 覆盖补盲（5G-A） BlindCoverage(5G-A) 以现有的产业成熟度和信道模型，5G-A的典型应用场景为覆盖补盲 Typicalapplicationscenariosfor5G-Awithexisting industrymaturityandchannelmodels 共性需求 Common 与场景相关的需求 Scenario-specific 易部署 EasyDeployment Strategies 非标准化non-standardized 偏硬件实现类方案Hardwareimplementation 静态/半静态控制static/semi-staticcontrol 对终端透明transparenttoterminals 覆盖补盲BlindCoverage 低成本 Lowcost 标准化Standardization 不同场景的商用需求CommercialRequirements 产业成熟度决定了应用场景的可实现性，对于不同场景、不同阶段，需要采取分步走的商用推进策略，以充分发挥智能超表面的技术优势 Industrialmaturitydeterminestherealizabilityofapplicationscenarios.Fordifferentscenariosandstages,astep-by-stepcommercialpromotionstrategyis neededtogivefullplaytothetechnologicaladvantagesofsmarthypersurfaces 2 容量提升CapacityEnhancement 传统网络性能提升 Traditionalnetworkperformanceenhancement 3新型应用NewApplication 低功耗 Lowpower consumption 易部署 EasyDeployment 易部署 EasyDeployment 多形态 polymorphic 动态控制Dynamiccontrol 对终端透明or非透明Transparentornontransparenttoterminals 各种控制方式共存Coexistenceofvariouscontrolmethods 与具体应用场景适配Adaptationtospecificscenarios3 智能超表面应用场景 典型场景下性能效果智能超表面的商用挑战 UsageScenarios Performance CommercialChallenges 面向低功耗和易部署的智能超表面设计 Low-PowerandEasilyDeployableDesignforRIS 总结 Summary 典型场景下性能效果Performance 覆盖增强：考虑投入产出比，工作模式选择灵活度高Coverageenhancement：Highflexibilityinworkingmodes,consideringtheinput-outputratio 静态/半静态：非标准化，主要考虑能耗和供电，室内外覆盖要考虑透明性——偏实现类的方案 Static/semi-static：Non-standardized,mainlyconsiderenergyconsumptionandpowersupply,indoorandoutdoorcoveragetoconsider 江苏移动+东南大学：2.6GHz单静态反射板16x32SingleStatic广东移动+华为+港中文（深圳）：2.6GHz单半静 态反射板16x16SingleSemi-Static 透明膜超表面 TransparentMetaSurface 红色阴影标记部分即覆盖延伸区域 800.12 Area(��) 下行DL 3.52 RSRP(dB) 针对于2.6GHz电磁波以60°斜入射至单层钢化玻璃增透膜可有效提高信号强度约2.9dB，对于4.9GHz电磁波提升强度约5.7dB For2.6GHzelectromagneticwavewith60°angledincidencetoasinglelayeroftempered glasstransmittanceenhancementfilmcaneffectivelyimprovethesignalstrengthofabout2.9dB,for4.9GHzelectromagneticwaveenhancementstrengthofabout 5.7dB. 性能指标Metric增益Gain SINR(dB) 3.42 部署RIS对边缘用户影响明显，边缘用户RSRP提升约3.3dB，边缘用户SINR提升 1.45dB，边缘吞吐量提升约79Mbps；部署RIS后，覆盖距离延伸约60米 DeploymentofRIShasasignificantimpactonedgeusers,withanincreaseofabout3.3 dBinRSRPforedgeusers,1.45dBinSINRforedgeusers,andanincreaseofabout79Mbpsinthroughputattheedge;afterdeploymentofRIS,thecoveragedistanceisextendedbyabout60meters RSRP(dB) 1.80 5.82 SINR(dB) 上行 UL Area(��)800.92 5 典型场景下性能效果Performance 覆盖增强：考虑投入产出比，工作模式选择灵活度高Coverageenhancement：Highflexibilityinworkingmodes,consideringtheinput-outputratio 动态：标准化，主要考虑能耗、供电，以及相比于NCR的综合增益（性能、部署） Dynamic:standardized:dynamic,mainlyconsideringenergyconsumption,powersupply,andoverallgainoverNCR(performance,deployment) •低频场景，RIS的性能优势更加明显Inlow-frequencyscenarios,theperformanceadvantageofRISismoreobvious •可借鉴现有NCR架构，对终端透明CandrawonexistingNCRarchitecture,transparenttoterminals •重点考虑节能设计，简化控制链路Focusonenergy-efficientdesignandsimplifiedcontrollinks NCR 控制链路 Controllink 回程链路 Backhuallink NCR-MT NCR-Fwd 接入链路 Accesslink 共用射频 CommonRF RIS 控制模块 ControllerDL 反射 ULReflection 共用射频 CommonRF 低频场景下，由于NCR会同步放大噪声和干扰，RIS的SINR的性能优势更显著 高频覆盖增强场景下，想要获得与NCR相当的性能，需要超大规模的RIS阵子数，进而会大概率出现近场效应 Inlow-frequencyscenarios,theperformanceadvantageofRIS'sSINRismoresignificantsinceNCRcanamplifynoiseandinterference Inhigh-frequencyscenarios,toobtainperformancecomparabletothatofNCR,anultra-largenumberofRISarraysisrequired,whichinturnwill haveahighprobabilityofnear-fieldeffects6 典型场景下性能效果Performance 容量提升：面向小区中信道条件较好的用户，利用信道状态信息对相位进行更为精准的调控 Capacityenhancement：Foruserswithbetterchannelconditionsinthecell,thechannelstateinformationisusedtoregulatethephasemoreaccurately •无源RIS如何获取信道状态信息，级联or分段HowpassiveRISobtainschannelstateinformation,cascadeorsegmentation •信道状态信息获取的开销vs性能增益Overheadvs.PerformanceGaininChannelStateInformationAcquisition •标准化影响较大Higherimpactofstandardization 16×16 Unit:Mbps Without RIS WithRIS Gain Averagethroughput 887.28 974.85 9.87% Celledgethroughput 7.42 9.99 34.63% 杭州亚运试点计划：潮汐效应区域，忙时扩充容量，闲时保证基本覆盖 HangzhouAsianGamesPilotProgram:tida