佘小明： Opportunities and Challenges for Low-altitude ISAC Network.pdf

1、2 0 2 4 全球6 G 技術大會僅供學習 勿用他途Opportunities and Challenges for Low-altitude ISAC NetworkXiaoming SheChina Telecom 2024-4-2522 0 2 4 全球6 G 技術大會僅供學習 勿用他途OpportunitiesSystem architecture and technical challengesStandardization planResearch and practice Summary and outlook1.2.3.4.5.32 0 2 4 全球6 G 技術大會僅供學習

2、勿用他途1云圖智行,國家立體交通網絡規劃綱要。2浙商證券，低空經濟：低空翱翔，拉開序幕。1.1 The Enormous Market Scale of the Low-altitude EconomyMarket ScaleGrowth RateThe scale of Chinas low-altitude economy may reach 6 trillion yuan by 2035Low-altitude supervision network is urgently needed and profitable.The proportion of fixed investment

3、in the air traffic control system is gradually increasingComposition of the low-altitude economy industryLow-altitude ManufacturingAviation ActivitiesFlight AssuranceComprehensive Services42 0 2 4 全球6 G 技術大會僅供學習 勿用他途Radar DetectionPhotoelectric DetectionRadio Frequency Spectrum DetectionISAC1.2 Comp

4、arative Analysis of Implementation Methods for the Low-altitude SupervisionLow-altitude ISAC network is competitive and with great potential.large in sizehigh accuracylong-range detectiondifficult to networkingsmall in sizeclose-range detectionaffected by weather conditionssmall in sizedifficult to

5、detect encrypted systemsunable to detect UAVmedium in sizehigh accuracyeasy to deployeasy to networking52 0 2 4 全球6 G 技術大會僅供學習 勿用他途Transmission of UAV-related business dataSurveillance video feedback,etc.UAV position sensing and recognitionUAV supervision,etc.Navigation control of networked UAVsRepo

6、rting identity,flight,and control information from the platform,etc.2.1 Low-altitude ISAC System ArchitectureFlight Control SystemData Service SystemSensing SystemIssue 1:coverageNetwork coverage of air and groundIssue 2:accuracyUAV sensing in low-altitude Issue 3:capacityMultiple UAVs sensing and t

7、racking Three critical challenges await solutions.62 0 2 4 全球6 G 技術大會僅供學習 勿用他途2.2 Network Coverage of Air and GroundBeam division for ground and low-altitude coverage Same FrequencyHard to control sidelobesCan not optimize coverage to low-altitude independentlyBS division for ground and low-altitude

8、 coverage separatelySame FrequencySevere shared-channel interference Hard to optimize coverage to low-altitude independentlyFrequency division for ground and low-altitude coverageDifferent FrequencyMay need extra carrierThe terrestrial network requires only minor adjustmentsPrioritize solutions with

9、 minimal impact on terrestrial networks.72 0 2 4 全球6 G 技術大會僅供學習 勿用他途2.3 UAV Sensing in Low-altitude=Large bandwidth neededLow-freq deployments may provide only decimeter-level accuracyFavors high-freq deployment=.Array aperture dependentRequire multi-beam to account for UAV altitude variations Favor

10、s high-freq deployment=Reflects radial velocity onlyNeed multi-BS collaboration for complete velocity attainment Mm-wave deployment facilitates sensing atomic capabilities improvement.echodopplerRangingDOAVelocity measurement82 0 2 4 全球6 G 技術大會僅供學習 勿用他途2.4 Multiple UAVs Sensing and Tracking Collabor

11、ative sensing boosts capacity,but strategy remains to be studied.Tremendous gains can be obtained via multi-BS collaboration3Study near-optimal sensing performance attainment with limited number of BSsMulti-BS collaborationMulti-frequency coordinationMm-wave and sub-6GHz signals are responsible for

12、proximity and long-range sensing respectively for multi-target supervision3 Wymeersch H,Lien J,Win M Z.Cooperative localization in wireless networksJ.Proceedings of the IEEE,2009,97(2):427-450.92 0 2 4 全球6 G 技術大會僅供學習 勿用他途RAN1-led SI for ISAC Channel ModellingISAC Check PointSA1-led WI for ISAC2022Q1

13、SA1 Sensing SI Approved2023Q2SA1 Sensing WI Approved2023Q4RAN1 Sensing SI Approved2024Q3RAN and SA assess whether other sensing projects have been approved.SA1-led SI for ISAC requirement2022202520232024Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q43.1 ISAC Standardization PlanTake a risk of missing the window of

14、 rapid developement of low-altitude economy.102 0 2 4 全球6 G 技術大會僅供學習 勿用他途Accelerate and prioritize gNB based sensing in 5G-A.3.2 Sensing Mode Comparison 11gNB based ISACl Easy to implement/deploymentl Legacy UEs can be sensed l Limited supporting use cases l Relative low sensing accuracy UE involved

15、 ISACl Support more sensing use casesl More accurate sensing abilityl High implementation complexityl UE needs to upgradeAdvantageDisadvantage2 0 2 4 全球6 G 技術大會僅供學習 勿用他途UAV management verification using ISAC technolgy in HangzhouEnsuring low-altitude safety during the Asian Games1000 meterssub-meter

16、 levelMmWave based ISAC network trial in GuangzhouMultiple flying objects Sub-meter levelPublish the white paper The Low-altitude Network by Integrated Sensing and Communication at MWC 2024Top-level academic papers covering theoretical bounds,waveform design,scheme innovations4.Research and Practice

17、122 0 2 4 全球6 G 技術大會僅供學習 勿用他途5.Summary and OutlooknLow-altitude ISAC network is urgently needed for the development of the low-altitude economy,with tremendous market potential.nMulti-BS collaboration,multi-frequency coordination,and mm-wave deployment can be considered for simultaneous low-altitude and ground coverage,sensing accuracy and capacity enhancement.nAcceleration of ISAC standardization and prioritization of gNB based sensing is helpful to meet the development window of low-altitude economy.132 0 2 4 全球6 G 技術大會僅供學習 勿用他途142 0 2 4 全球6 G 技術大會僅供學習 勿用他途