Reconfigurable-intelligent-surfaces_PPT.pdf

RIS ppts

1. 5GIC & 6GIC
Coverage Enhancement with Power Efficient
Reconfigurable Intelligent Surfaces
Dr.Mohsen Khalily
Radio Access Network Techniques for 6G Workshop
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2. 5GIC & 6GIC
Outline
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Introduction​
Control over the Propagation Environment
Network Operators’ Challenges
Current Technologies
Reconfigurable InteligentSurface
6GIC’s RRSs
Static RRS
Dynamic RRS
Multibeam and Widebeam RRS
RRS channel measurement
THz channel measurement

3. 5GIC & 6GIC
Introduction
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•Wireless communication
engineersenvisionafullyconnectedworld
wherethereisaseamlesswireless
connectivityforEveryoneandEverything.
•Current 5G and future6G
wirelessnetworkswillberequiredtofulfil
an ever-increasingdemand for
connectivityatanunprecedentedscale.
•Thiswillrequireallfuturegenerationsofe
Smart,IntelligentandEfficient.networks
to be

4. 5GIC & 6GIC
Control over the Propagation Environment
4

5. 5GIC & 6GIC
Network Operators’ Challenges
•Lack of seamless connectivity leading to poor quality of (QoS)especially in
harsh propagation environments.
•Supportingbillionsofonlinedeviceswithsuchhighdatawhichultimately
resultsinahighercarbonfootprintofthenetwork.
•Unevenuserdistributionduetovariouspracticalchallengesinthe
urbanenvironmentleadingtoanunequalresourceutilisationattheBSs.
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6. 5GIC & 6GIC
Current Technologies
•Large-scaleantennasystemse.g,MassiveMIMOsystems
•Relaynodes,heightenedpowerconsumption andreduced
networkefficiency.
•Although,ultra-densenetworkscanbeasolutionforcoverage
enhancement,theycanincreasetheinterferencelevelandrequirebackhaul
planningalongwithhigherinfrastructuremanagementcosts.
•Usingco-operativeBSswouldalsorequirehigherdensitywhileswitching
tosub-6GHz.(FormmWavescnearios)
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7. 5GIC & 6GIC
Reconfigurable Intelligent Surface
➢RIS are typicallycomposed of
alargemetasurfacesheetbackedbyacontrolunit.
➢Capableofflexiblemanipulationofanarbitrary
EMwavefront.
➢RISdoesnotrequireintensebackhaulplanning.
➢RIScanbemadeofsmartelementsthatarenot
impairedbynoiseamplification.
➢RIScapableofcontrollingthestateofindividual
elementsandcansensetheenvironmenttocut
downpowerconsumption.
➢RIScanimprove coveragebyforming
strongNLoSpathwheretheLoSpathis
eitherblockedornotsufficientlystrong.
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8. 5GIC & 6GIC
6GIC's RRS
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9. 5GIC & 6GIC
Static RRS
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•Substrate:F4BT615isamicrodispersedceramic
PTFE composite with a
woven fiberglassreinforcement through
scientificformulationandstricttechnology
procedures.Besides，becauseofthehigh
thermalconductivity，advantagetotheheat
dissipationofapparatus.
•Thickness:3mm
•Unitcells:11000
•Beams:2reflectedbeamstowards±45o
•MeasuredGain:20dB
•Bandwidth:400MHz(3.3GHz-3.7GHz)
•Inputpower:0Watt

10. 5GIC & 6GIC
Dynamic RRS
•The patches have been printed onan
F4BT450, substrate with athickness
of 1.524mm
•Unit cells:3000
•Measured Gain:17dB
•Bandwidth:700MHz(3.1-3.8 GHz)
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11. 5GIC & 6GIC
Muli-& Wide-Beam RRS
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12. 5GIC & 6GIC
Muli-& Wide-Beam RRS
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13. 5GIC & 6GIC
Transmission Metasurfacefor O2I application
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•Fully-transparentandnovel
transmissionsurfacethatcanbe
usedtoreducethepenetration
lossencounteredbymmWave
frequenciesduringatypicalO2I
scenario.
•Itisopticallytransparent,soit
canbedeployedinbuildingsas
windowsorglasspaneswithout
impactingtheaestheticsofthe
infrastructure.

14. 5GIC & 6GIC
Channel Measurement in Presence of RRS
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15. 5GIC & 6GIC 15

16. 5GIC & 6GIC
THz Channel Measurement
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17. 5GIC & 6GIC 17
Thank you for Watching and Listening !