overview of indigenous 5g testbed
TRANSCRIPT
Overview of Indigenous 5G TestbedRohit Budhiraja
Associate ProfessorDepartment of Electrical Engineering
IIT Kanpur India
April 5th, 2021
Development of an Indigenous
End-to-end 5G Test Bed
2@CEWiT, IITB, IITH, IITM, IITK, IITD, IISc, SAMEER
Supported By
Department of TelecommunicationsMinistry of Communications
Government of India
Indigenous 5G Testbed
IIT Madras
IISc IIT Delhi
IIT Kanpur
IIT BombayIIT Hyderabad
Industry Partners
TECHNOLOGY PARTNERS
DEVELOPMENT PARTNERS
@CEWiT, IITB, IITH, IITM, IITK, IITD, IISc, SAMEER 3
Major Goals of 5G testbed• Encourage existing and new telecom product startups in India• Multiply R&D capability to develop 5G solutions for Indian markets
• Hugely enhance capacity in 5G technology skills
• Demonstrate solutions for India• Rural network deployments• Smart city applications
• Increase India’s participation in global forums (3GPP, ITU, IEEE) -present test results for Indian use cases
• Helping government agencies with the correct technical information
4
Test Bed Outcomes and their uses
@CEWiT, IITB, IITH, IITM, IITK, IITD, IISc, SAMEER 5
Hardware and Software IPs(Hardware platforms, Prototypes,
ASICs, Stacks)
Start-ups, SMEs, Tech companies
End to end Test BedIndustry - Start-ups, SMEs,
Technology Institutes - research and teaching
Algorithms & Techniques(Implementation IPs, patents)
R&D organisations, Product Companies, Research teams –
Academia & Industry
Expertise5G Ecosystem in India, especially product and service companies
5G Test Bed Project
Test Bed Locations
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IITM/CEWiT, ChennaiIISc, Bangalore
IITB, Mumbai IITH, Hyderabad
IITD, Delhi
IITK, Kanpur
q 40 Investigators (faculty members/Senior researchers) from 8 institutesq Currently nearly 350 employees working on the testbed
5G testbed architecture overview 7
5GCBackhaul fibre
Fronthaul fibre x3
Cell site 2
Baseband card 4
Baseband card 5
Baseband card 6
UE UE UE
Cell site 3
Fronthaul fibre x3
Baseband card 7
Baseband card 8
Baseband card 9
Cell site 1 Fronthaul fibre x3
UE
UE
Baseband card 1
Baseband card 2
Baseband card 3BBU
RRH+BBU= gNodeB
Summary of major subsystems being developed • Sub 6 GHz full-digital mMIMO remote radio head (RRH)
• 64 Antenna systems (Sub 6 GHz)• Radio, front end
• Integrated mmWave hybrid RRH• Development of hybrid analog/digital architectures• 256 Antenna
• Large number of antennas at the RRH• 5G Base band unit (BBU)
• Supporting lower bands (< 6 GHz) and higher bands (> 6 GHz).• 5G Core Network
• SDN based• Multi-RAT using WiFi etc
• Management layer for test bed management
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9
Need of massive antennas at the RRH (1)
1010
• Large number of antennas help in forming pointed beams towards the users• Reduces inter-cell interference
Need of massive antennas at the RRH (2)
5G testbed work breakup
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CEWiT UE L1/L2/L3, Baseband Algorithms, Core NetworkIIT Bombay Core NetworkIIT Hyderabad NB-IoT ASIC, gNB L1/L2/L3IIT Madras gNB/UE Hardware Platforms, gNB L1, Core NetworkIIT Kanpur gNB BBU Hardware Platform, gNB L1Sameer Antennas, RF modulesIISc Bangalore Baseband Algorithms, gNB L1 (open stack) IoT, LiFiIIT Delhi Baseband Algorithms, LiFi, Security
Remote Radio Head (sub 6 GHz)
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RF Features
• 3.5 GHz• 100 MHz• 64 TRX
• Dual Polarized• 1.5 Watt per Antenna• TDD
Mechanical Features
• IP65• 33 Kg
Fronthaul• e-Cpri (10/25G)
Software• 3GPP (5G NR)• 7.2 split (3GPP)
Designed and built in-house
Remote Radio Head (mmWave)RF Features
• 28 GHz• 400 MHz• 4x 64 element phased
array• TDD
Mechanical Features• IP65• 15 Kg
Fronthaul
• e-CPRI (25G)
Software
• 3GPP (5G NR)• 7.2 split (3GPP)
At IMC
Designed and built in-house
Base Band Unit
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Features
• PCie• Cloud ready• 4.5 Gbps throughput
Form Factor
Like Tesla card (NVidia)
Front HaulLike Tesla card (NVidia)
Software
• 3GPP (5G NR)
L2/L3 Interface
FAPI
15Snapshot of challenges - power delivery
This are the power rails for only one SoC
Total 24 regulators on the board
Each piece of hardwarehas 20-24 power supplies
FPGA_VCCINT àFPGA internal
supplies
FPGA VCCINT_IO power supplies
FPGA1 à DDR4, auxiliary circuits
UTIL1V8, 2V5, 3V3, à SD Card, QSPI, Clocks, SFP, UART
ETH_VCC1V2, 1V5 à Ethernet supplies
User Equipment
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Features
• 2 Antenna• 3.5 GHz/ 28 GHz• 100 MHz/400 MHz• 23 dBm
Labs
• State of the art 5G Labs have been developed across these institutes
• 5G test equipment (sub 6 GHz and Mmwave)
• Requisite Software(s) • Protocol testers
• Open to outside companies*
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Conclusions• 5G Testbed being built from scratch
• Core network• Remote radio head hardware and software
• Sub 6 GHz and mmWave bands• Baseband unit hardware and software• UE hardware and software
• Extreme hardware engineering• Design of 20+ layers of printed circuit boards with 100 Gbps interfaces• 64 RF transceiver sub 6GHz fully-digital hardware• Mmwave hybrid RF transceivers
• .
Thanks