苏鑫：智能超表面商用化考量

CommercializationConsiderations for RIS 苏鑫Su Xin中国移动研究院China Mobile Research Institute2023年12月6日 智能超表面应用场景 Usage Scenarios 典型场景下性能效果 Performance 智能超表面的商用挑战 Commercial Challenges Low-Power and Easily Deployable Design for RIS 总结 Summary 智能超表面应用场景Usage Scenarios PrincipleTurning the original natural uncontrollable electromagnetic propagation environment into an artificially controllable one场景Scenarios 不同场景的商用需求Commercial Requirements 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 Industrial maturity determines the realizability of application scenarios. For different scenarios and stages, a step-by-step commercial promotion strategy isneeded to give full play to the technological advantages of smart hypersurfaces 商用需求Commercial Requirements 典型应用Typical applications 方案策略Strategies 阶段Stages 共性需求Common与场景相关的需求Scenario-specific 覆盖补盲（5G-A）Blind Coverage (5G-A) 非标准化non-standardized偏硬件实现类方案Hardware implementation静态/半静态控制static/semi-static control对终端透明transparent toterminals 易部署Easy Deployment 1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Typical application scenarios for 5G-A with existingindustry maturity and channel models 覆盖补盲Blind Coverage容量提升Capacity Enhancement 标准化Standardization动态控制Dynamic control对终端透明or非透明Transparent ornontransparent to terminals 易部署Easy Deployment 低功耗Low powerconsumption 传统网络性能提升Traditional network performance enhancement 各种控制方式共存Coexistence ofvarious control methods与具体应用场景适配Adaptation to specificscenarios 易部署Easy Deployment多形态polymorphic 3新型应用New Application 智能超表面应用场景 Usage Scenarios 典型场景下性能效果 智能超表面的商用挑战 Commercial Challenges Low-Power and Easily Deployable Design for RIS 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Coverage enhancement：High flexibility in working modes, considering the input-output ratio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, mainly consider energy consumption and power supply, indoor and outdoor coverage to consider 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5.7 dBFor 2.6 GHz electromagneticwave with 60°angled incidenceto a single layer of temperedglass transmittanceenhancement film can effectivelyimprove the signal strength ofabout 2.9 dB, for 4.9 GHzelectromagnetic waveenhancement strength of about5.7dB. 部署RIS对边缘用户影响明显，边缘用户RSRP提升约3.3 dB，边缘用户SINR提升1.45 dB，边缘吞吐量提升约79 Mbps；部署RIS后，覆盖距离延伸约60米Deployment of RIS has a significant impact on edge users, with an increase of about 3.3dB in RSRP for edge users, 1.45 dB in SINR for edge users, and an increase of about 79Mbps in throughput at the edge; after deployment of RIS, the coverage distance isextended by about 60 meters 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Coverage enhancement：High flexibility in working modes, considering the input-output ratio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, mainly considering energy consumption, power supply, and overall gain over NCR (performance, deployment) •低频场景，RIS的性能优势更加明显In low-frequency scenarios, the performance advantage of RIS is more obvious•可借鉴现有NCR架构，对终端透明Can draw on existing NCR architecture, transparent to terminals•重点考虑节能设计，简化控制链路Focus on energy-efficient design and simplified control links 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 In low-frequency scenarios, the performance advantage of RIS's SINR ismore significant since NCR can amplify noise and interferenceIn high-frequency scenarios, to obtain performance comparable to thatof NCR, an ultra-large number of RIS arrays is required, which in turn willhave a high probability of near-field effects 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 Capacity enhancement：For users with better channel conditions in the cell, the channel state information is used to regulate the phase more accurately•无源RIS如何获取信道状态信息，级联or分段How passive RIS obtains channel state information, cascade or segmentation•信道状态信息获取的开销vs性能增益Overhead vs. Performance Gain in Channel State Information Acquisition Hangzhou Asian Games Pilot Program:tidal effect areas, expanding capacityduring busy times and ensuring basiccoverage during idle times Usage Scenarios 典型场景下性能效果 Performance 智能超表面的商用挑战 Commercial Challenges 面向低功耗和易部署的智能超表面设计 Low-Power and Easily Deployable Design for RIS 总结 Summary 智能反射面的商用挑战Commercial Challenges 智能反射面在基础理论、器件实现、组网部署、系统方案等方面常存在一定挑战。为了应对未来的复杂组网，需要小区内或小区间的多个智能反射面在基站的统一协调下进行协作反射，即作为协作反射节点 工程实现和部署：存在尺寸、价格、部署难度等限制因素 .81无源静态反射面Static RIS Engineering realization and deployment: there are constraints such assize, price, and difficulty of deployment 共性问题CommonProblems •超材料和器件成熟度不高，波束调控能力较弱•工作带宽受限，能量反射效率较低•尺寸较大，部署需与物业、业主沟通，存在风阻大的问题•馈电需求对智能反射面部署产生限制•无源特性提高滤波难度，存在运营商间干扰问题 反射面波束固定不变快速部署，弱覆盖场景扩展网络覆盖和补盲 半静态可控反射面Semi-Static RIS 理论和方案设计：目前缺乏完整的信道模型，空口传输相关方案复杂度高、开销大、可行性受限 控制方案和网络架构：智能反射面的控制方式将对网络架构设计、功耗和部署方式产生重要影响 反射面波束半静态变化扩展波束覆盖范围、提升小区容量和速率 Theory and scheme design: the current lack of a complete channelmodel, high complexity, h