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“5G, Special Generation”
Professor Rahim Tafazolli Director Institute for Communication Systems (ICS), 5GIC
Institute for Communication Systems Home of
5G Innovation Centre
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ICS’S STRENGTHS
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§ WELLKNOWNRESEARCHINSTITUTEIN
COMMUNICATIONSINTERNATIONALLY,
PARTICULARLYINEUROPE
§ GOODNETWORKINGWITHINDUSTRYANDACADEMIA
§ GOODAWARENESSOFSTRATEGICANDHOT
RESEARCHAREAS–
§ TOSOMEEXTENTWEARETHEDRIVERS
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COMMUNICATION AND INFORMATION SYSTEMS
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§ MOBILECELLULAR§ 4G,5G,B5G
§ WIFI§ .11g,n,ac,ax..
§ SATELLITE§ BroadbandFixed
§ BroadbandMobile–BBonthemove
§ Broadcast–passengervehicles
§ MACHINETOMACHINE§ ZigBee,LTE-M
§ VEHICLETOVEHICLECOMMUNICATIONS§ 802.11p,LTE-V
§ FUTUREINTERNET
§ IOT
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WHAT 5G IS NOT
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JUST MORE OF THE SAME
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5G is
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Enabler of Connected Economy and Society
WIRELESS CONNECTIVITY BETWEEN PEOPLE AND DEVICES
FOR THE PEOPLE
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5G IN 2020 AND BEYOND
§ Enhanced Mobile Broadbandè 10/20Gbps or 1000x more capacity/area § Massive Machine Type Communicationsè 106 devices/km2 § Ultra-reliable and Low Latency Communicationsè >99.999 and <1ms
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NEW RADIO
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1. OBE to the unavailable band between available fragments is the same as that of OFDM 2. For single carrier design 3. SFDM is 5GIC proposal
9
FigureofMerit OFDM FOFDM WOFDM FBMC GFDM UFMC SFDM3
PAPR High High High High Moderate2 High Low
OBE High Low1 Low Low Low Low Low
SE Low Low Low High High High High
ComputaLonalComplexity
Low Moderate Moderate High High High Moderate
Short-bursttraffic No No No NoYeswiththe5GICsoluLon
Yes Yes Yes
Fragmentedspectrum No No1 Yes Yes Yes Yes Yes
L1Latency High High High HighLowwiththe5GICsoluLon
Moderate Low Low
Supp
ortfor
MIMO Yes Yes Yes NoYeswith5GICsoluLon
Yes Yes Yes
HigherordermodulaLon
Yes Yes Yes Yes,with5GICsoluLon
Yes TBI Yes
NOMA Yes Yes Yes Involved Yes TBI TBI
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SCALABLE FDM
10
SCALABLE FREQUENCY DIVISION MULTIPLEXING
10 15 20 2510-3
10-2
10-1
100
Es/N0
CRLB
/ MSE
MSE with G dep. ZCMSE with G dep. SYMCRLB with GCRLB without G
5 10 15 20 25 30 35 40
10-4
10-3
10-2
10-1
100
Eb/N0 [ dB ]
BER
QPSK16QAM64QAM256QAM1024QAM
Best OBE
Lowest PAPR
CSI estimate’s MMSE bound approaching
Scalable with high order mod
0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
-70
-60
-50
-40
-30
-20
-10
0
10
Normalized frequency fs
Norm
alize
d PSD
[dB]
OFDMTB-GFDMHTO-GFDMHTO-GFDM-A
OFDM TB-SFDM HTO-SFDM HTO-SFDM-A
0 2 4 6 8 10 1210-5
10-4
10-3
10-2
10-1
100
PAPR in dB
CCDF
OFDM equ.10-Clus.GFDM α=0.5 2-ClusGFDM α=0.1 2-Clus
OFDM TB-SFDM HTO-SFDM
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MU-MIMO MAP
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Size of MU-MIMO
NET
WO
RK
TH
RO
UG
HPU
T
4x4 8x8 128 x128 1024x1024
LTE
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MASS CONNECTIVITY
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Towards 1 Million per km 2
• NOVEL TECHNIQUE OF SCMA FOR IOT • IN COOPERATION WITH HUAWEI • 300% MORE CONNECTIVITY THAN 4G
• TRANSMISSION OF 4K ( ULTRA HIGH DEFINITION) VIDEO ON A MOBILE NETWORK
• IN COOPERATION WITH HUAWEI AND BBC R&D • 1ST IN THE WORLD
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RELIABILITY, RESILIENCE & AVAILABILITY
§ EQUALLY IMPORTANT TO LOW LATENCY
§ “ALWAYS SUFFICIENT”… MULTIPLE NETWORKS AND IMPOSSIBLE WITH ONE NETWORK
§ FIXED-MOBILE CONVERGENCE
§ SPECTRUM AGILITY: ALL SPECTRUM INCLUDING LICENSED AND LICENSED-EXEMPT BANDS
§ CELL EDGE CAPACITY PROBLEM
§ NETWORK AGILITY: TRANSPORT/NETWORKING/ROUTING PROTOCOLS, SOFTWARE-BASED NETWORK ARCHITECTURE AND
SDNETWORKING
§ DISTRIBUTED CONTROL BETWEEN DEVICE AND NETWORK. NEW FLEXIBLE MAC NEEDED (MORE CONTROL TO DEVICE) Wednesday,13July16 13
>99.9999..99
RESILIENCE BY DUPLICATION AND ADDING REDUNDANCY IS NOT THE ANSWER
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LATENCY
§ LOW LATENCIES AT ALL LAYERS, NEW PARALLEL SIGNAL PROCESSING AND COMPUTING ALGORITHMS
§ MOST DELAYS IN PREVIOUS GENERATIONS DUE TO C-PLANE SIGNALLING
§ NEW END-TO-END SIGNALLING ARCHITECTURES § NEW RAN § NEW NETWORK ARCHITECTURE (CACHING, EDGE COMPUTING..)
§ NEW APPLICATION PROTOCOLS…
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NOT ONLY FOR MISSION CRITICAL APPLICATION BUT MAKING NETWORKING AND ADVANCED RADIO TECHNOLOGIES WORK EFFICIENTLY
HIGHER SPEED → does not yield┴ LOWER LATENCY BUT LOWER LATENCY → yields┴ HIGHER SPEED
4G INITIAL CALL SETUP TOTAL DELAY (FROM RRC IDL > CONNECTED MODE) : ~ 80 MS
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THROUGHPUT VS. BANDWIDTH AND LATENCY (ROUND-TRIP TIME)
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§ BANDWIDTH CAPACITY: IDEAL THROUGHPUT A UE COULD GET: • MAX. DATA RATE DIVIDED BY NUMBER OF ACTIVE UES IN A CELL
§ Round-trip Time (RTT): the RTT between UE and a requested content’s location can be: • 15 to 40ms if available at eNB, BBU or P-GW • Up to hundreds of ms if not available at network edge
§ Question: How is UE’s throughput affected by these different values?
UE eNB P-GW ContentSource10-20ms
RAN
5-20ms
Backhaul
Up to hundreds of ms
Public Internet
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THROUGHPUT VS. BANDWIDTH AND LATENCY (ROUND-TRIP TIME)
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EXPERIMENT SCENARIO: SINGLE FILE DOWNLOAD
THROUGHPUT IS MEASURED USING WIRESHARK IN A CLIENT-SERVER-BASED TESTBED (FIXED NETWORK)
§ RTT AND BANDWIDTH ARE MANIPULATED VIA NETWORK EMULATOR § SCENARIO: SINGLE FILE TRANSFER OVER TCP
20MBPS BANDWIDTH CAPACITY § LARGER DOWNLOADS (>= 5MB) ARE NOT AFFECTED MUCH BY
LATENCY.
§ SMALLER DOWNLOADS (<= 1MB) ARE NEAR-LINEARLY AFFECTED BY LATENCY
§ AS A DOWNLOAD BECOMES SMALLER, IT IS AFFECTED MORE BY LATENCY (I.E., THROUGHPUT DROPS QUICKER AS LATENCY INCREASES).
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Throughput vs. Bandwidth and Latency (Round-Trip Time)
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Experiment Scenario: Single File Download
100Mbps BANDWIDTH CAPACITY
§ DOWNLOAD THROUGHPUT ARE AFFECTED MORE THAN UNDER 20MBPS BANDWIDTH.
§ UNDER HIGHER BANDWIDTH, IT IS EASIER FOR LATENCY TO BECOME THE BOTTLENECK.
§ LARGER DOWNLOADS (>= 5MB) ARE NEAR-LINEARLY AFFECTED BY LATENCY.
§ SMALLER DOWNLOADS (<= 1MB) ARE AFFECTED MORE BY LATENCY, ESPECIALLY AT 10-50MS (EXPONENTIALLY).
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DATAANALYTICS
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§ ENHANCEUSERQOE
§ INTELLIGENTNETWORKMANAGEMENT(OSS)ANDCONTENTCACHING
§ BUSINESSINTELLIGENCE
§ E-HEALTHCARE
§ ANDMUCHMORE
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Data Set & result
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§ RECORDSOFBBCIPLAYER:MORETHAN100MILLIONUNIQUEREQUESTSOVER30DAYS
§ USINGDATAOF25DAYSINLEARNINGPHASE
§ PREDICTINGPOPULARITYOFNEWCONTENTSINNEXT5DAYS
§ PREDICTIONACCURACYBETTERTHAN93%
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Operations & Maintenance
C-RAN Baseband Units
5GIC Comm’s Room
Ultra-Dense Cluster(2) (AY Building)
5GIC Test-bed: Ultra-Dense Campus Test-bed
Umbrella Cell
University of Surrey Outdoor Campus
Small Cell
Ultra-Dense Cluster(1)
Macro BS
RRH
Ultra-Dense Cluster(3) ATI
FAP
AP
5G Soft-FDC Core
LTE Soft-Core
LTE Core (H/W)Vodafone Reading Test Centre
VPN Tunnel
FemtoRadios(x6,LTEFDD)
picoRRH’s(x6,pico-LTETDD)
AccessPoints(x6,802.11ac)
5GIC Indoor Deployment
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TESTBEDEXPANSION
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SDN/NFV and MEC Research, development and testing
Berlin Fraunhofer
Torino,Milano,Trento,Pisa,Catania,Venezia
TelecomItaly&
Ericsson
Guildford,Stevenage,Newbury,Basingstoke,Brighton,Greenwich
ECFundedProjecteHealthTestbed
Broadband&IoT
testbed
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eHealth Testbed- Dementia
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TOPICS AND SYSTEMS OF INTERESTS
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5GANDBEYONDBELOW1GHZ,BELOW6GHZANDABOVETOTERAHERTZ
TOPICS
§ UNICAST/MULTICAST/BROADCAST
§ FIXED-MOBILEINTEGRATION
§ BROADBANDAIRINTERFACE
§ SDN/NFV/MEC/ORCHESTRATOR(SOFTWAREARCHITECTURESANDNETWORKING)
§ ICN
§ DATAANALYTICS
§ GEO-POSITIONING
§ LATENCY
§ RELIABILITY
§ NETWORK/DATASECURITY
§ VERTICALS
§ E/MHEALTH
§ WIRELESSROBOTICS
§ CONNECTEDTRANSPORTS
§ ETC…
SYSTEMS
§ MOBILECELLULAR
§ WIFI
§ SATELLITE
§ MACHINETOMACHINE
§ VEHICLECOMMUNICATIONS
§ FUTUREINTERNET
§ IOT