1. Wireless Cloud GENi-FIRE Workshop Washington D.C. September 17 th, 2015 Ivan Seskar WINLAB (Wireless Information Network Laboratory) Rutgers University seskar (at) winlab (.) rutgers (.) edu 1

2. Basestation Architecture Evolution Power Amplifier Baseband Transport Control & Mgmt. Traditional Design Core Network Power Amplifier Baseband Transport Control & Mgmt. Core Network Remote Radio Head (RRH) Baseband Unit (BBU) Current Design Cloud Radio Access Network (CRAN) Power Amplifier Baseband Transport Control & Mgmt. Baseband Transport Control & Mgmt. Baseband Transport Control & Mgmt. Core Network FRONTHAUL Common Public Radio Interface (CPRI) Open Base Station Architecture Initiative (OBSAI) Open Radio Equipment Interface (ETSI-ORI ) FRONTHAUL Common Public Radio Interface (CPRI) Open Base Station Architecture Initiative (OBSAI) Open Radio Equipment Interface (ETSI-ORI ) BACKHAUL S11,R4,R6 BACKHAUL S11,R4,R6

3. CRAN Requirements WiFi: Shortest SIFS interval = 10 μs LTE (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)

4. WINLAB 5G Wireless: Industry Concepts for 5G Several industry white papers on 5G released in 2015: Ref: Ericsson 5G White Paper, Feb 2015 Ref: 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

5. WINLAB 5G Wireless: Technical Challenges Faster Cellular Radios Access ~1-10 Gbps ~1000x capacity Faster Cellular Radios Access ~1-10 Gbps ~1000x capacity Low-Latency/ Low-Power Access Network For Real-Time IoT Low-Latency/ Low-Power Access Network For Real-Time IoT New Spectrum & Dynamic Spectrum Access New Spectrum & Dynamic Spectrum Access Next-Gen Mobile Network 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

6. CRAN Expanded

7. OBRIT Extension: Proposal

8. 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 TypeNumber DSP48 Blocks58K Block Rams (18 kB)14K Logic Cells7.2M Slices (LUTs)1.5M

9. Clock Distribution

10. 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