wireless cloud geni-fire workshop washington d.c. september 17 th, 2015 ivan seskar winlab (wireless...
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Wireless CloudGENi-FIRE WorkshopWashington D.C. September 17th, 2015
Ivan Seskar
WINLAB (Wireless Information Network Laboratory)
Rutgers Universityseskar (at) winlab (.) rutgers (.) edu
1
Basestation Architecture Evolution
Power Amplifier
Baseband
Transport
Control & Mgmt.
TraditionalDesign
Core Network
Power Amplifier
Baseband
Transport
Control & Mgmt.
Core Network
RemoteRadio Head(RRH)
BasebandUnit(BBU)
CurrentDesign
Cloud Radio Access Network (CRAN)
Power Amplifier
Power Amplifier
Power Amplifier
Baseband
Transport
Control & Mgmt.
Baseband
Transport
Control & Mgmt.
Baseband
Transport
Control & Mgmt.
Core NetworkCore Network
FRONTHAUL
• Common Public Radio Interface (CPRI)
• Open Base Station Architecture Initiative (OBSAI)
• Open Radio Equipment Interface (ETSI-ORI)
BACKHAUL
• S11,R4,R6
CRAN Requirements
WiFi:• Shortest SIFS interval = 10 μsLTE (20 MHz LTE, 2x2 MIMO): • CPRI fronthaul - 2.5 Gbps with BER < 10e-12• Phase error of ± 1.5 - 5 μs• Frequency error: ±50 ppb• Delay < 3 ms total (0.1- 0.2 ms on fronthaul)• Jitter < 65 ns
Multiple 1000 of GOPS (for a large system)
WINLAB
5G Wireless: Industry Concepts for 5G
Several industry white papers on 5G released in 2015:
Ref: Ericsson 5G White Paper, Feb 2015Ref: Nokia 5G White Paper, Feb 2015
Multi-purpose network with significant performance improvements Machine-to-machine and IoT applications (some requiring low latency)
Densely deployed wireless networks with cloud integration
Ref: Nokia 5G White Paper, Feb 2015
4
WINLAB
5G Wireless: Technical Challenges
Faster CellularRadios Access
~1-10 Gbps~1000x capacity
Low-Latency/Low-Power
Access NetworkFor Real-Time IoT
New Spectrum & DynamicSpectrum Access
Next-Gen Mobile
Network
Wideband PHY
Massive MIMO
Cloud RAN arch
mmWave (60 Ghz)
Multi-Radio access
HetNet (+WiFi, etc.)
…
Custom PHY for IoT
New MAC protocols
RAN redesign
Light-weight control
Control/data separation
Network protocol redesign
….
60 Ghz & other new bands
New unlicensed/shared spectrum
Dynamic spectrum access
Spectrum sharing techniques
Non-contiguous spectrum
Network/DB coordination methods
….
Mobile network redesign
Convergence with Internet
Clean-slate Mobile Internet
Software Defined Networks
Open wireless network APIs
Cloud services & computing
Edge cloud/fog computing
Virtualization, NFV
CRAN Expanded
OBRIT Extension: Proposal
OBRIT Extension: Current
• 40 USRP X310s – Available FPGA resources:
– 2 x UBX-160 (10 MHz - 6 GHz RF, 160 MHz BB BW)– 2 x 10G Ethernet for fronthaul/interconnect– Four corner movable mini-racks (4 x 20 x 20 -> 1 x 80 x 80)
• > 500+ GPP Cores (?) • 4 x 48 port 10G switches with 40G TOR switch
Resource Type Number
DSP48 Blocks 58K
Block Rams (18 kB) 14K
Logic Cells 7.2M
Slices (LUTs) 1.5M
Clock Distribution
• What is our programming model for this mixed environment?
• How much initial work do we as a community need to do in order to get average experimenter involved?
• What other communities we need to get involved (i.e. who will help with virtualized real-time platform)?
• How can we move these highly-programmable platforms “outside” of the testbed?
Open Issues
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