Software Defined RAN
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This document discusses SD-RAN and its role in enabling 5G networks. It begins with an overview of 5G technologies and use cases. It then discusses SD-RAN, including how it separates the control and user planes in the radio access network (RAN) and introduces programmability. SD-RAN allows for disaggregation of RAN functions and network slicing. The document describes how SD-RAN is being implemented in the M-CORD platform to create a programmable, virtualized RAN integrated with a distributed access cloud. It calls for further participation to advance M-CORD as an open reference platform for 5G.
Software Defined RAN
- 1. 1 SD-RAN ONS 2017 PMTS AT&T M-CORD Chief Architect ON.Lab CTO Argela-USA M. Oğuz Sunay Tom Tofigh
- 2. Outline SD-RAN 2 • 5G - Tom Tofigh • What is it? • Use Cases • SD-RAN - Oğuz Sunay • SD in RAN: Two planes of networking • Disaggregation in the RAN • Programmability of the RAN • Slicing of the RAN • SD-RAN in M-CORD - Tom Tofigh
- 3. 3 5G Cellular Evolution Keynote Template Tom Tofigh - AT&T
- 4. 5G What is it? 4 1. Inclusion of vertical sectors that haven’t been included in 4G 2. Offering new use experience ( AR/VR , battery life , M2M, 4K video ) 3. Provides for new types of connectivity services 4. Provides for autonomous operational Flexibility (performance, latency scale, security, reliability, and programmability) 5. Performs frequent “load balance control” across hyper densified set of macro, small and micro cells so far.
- 6. Technology Drivers For 5G 6 Massive MIMO mmWave Multi RAT Wireless Networks Dramatically increased number of antenna elements on base stations enabling beamforming Utilize potential of extremely wide bandwidths at frequency ranges once thought impractical for commercial wireless Improve bandwidth utilization through evolving PHY and flexible numerology Consistent connectivity meeting the 1000x traffic demand for 5G • Densification • SDN • NFV • C-RAN
- 7. 5G Enablers Technology Pillarss 7 NEW AIR INTERFACE(S) NETWORK FUNCTIONS VIRTUALIZATION NETWORK SLICING MORE SPECTRUM SOFTWARE-DEFINED NETWORKS CLOUD TECHNOLOGIES MOBILE EDGE COMPUTING r ! " l ģ ô 8 FUNCTIONAL DISAGGREGATION k
- 8. 5G Spectra Driving the 5G Use Cases 8 • FCC Allocated 4 Bands for 5G: 28 GHz, 39 GHz, 37 GHz, 65 GHz • Mobile rights to existing LMDS and 39 MHz licensees • Spectrum aggregation limit of 1.25 GHz • Federal, FS, FSS Spectrum Sharing • Rules went into effect December 14, 2016 –Paving way for 5G commercial service
- 9. 5G Radio Access RAN Evolution Towards NR 9 • Evolution of existing technology + NR • Rapid switching based on radio condition • Gradual migration of NR into existing spectrum • Flexible connections for multiple services
- 10. 5G Use Cases New Vertical Sectors to be Supported 10 Enhanced Mobile Broadband Massive Machine Type Communications Ultra-reliable, Low-Latency Communications Source: Recommendation ITU-R M.2083 “IMT Vision - Framework and overall objectives of the future development of IMT for 2020 and beyond”
- 11. 11 SD-RAN Basic Definition Keynote Template Oğuz Sunay – ON.Lab / Argela-USA
- 12. M-CORD Mobile CORD Platform Pillars 12 SDN NFV CLOUD CORD • M-CORD: • Disaggregated, virtualized EPC running on (distributed) access cloud over programmable VN/fabric • Programmable RAN configured by ONOS GOAL: Programmable/configurable RAN with disaggregated functions selectively running on distributed access cloud
- 14. Two Planes of Networking Formal Definition 14 Control PlaneData Plane Computer Networks Definition Forwarding packets based on local forwarding state Computing that forwarding plane taking into account the rest of the system Control PlaneUser Plane Wireless Networks Definition Flows that bear the “content” information regarding a mobile user application Flows that bear the “signaling” information to ensure mobility, session, authentication and subscription management,
- 15. Two Planes of Networking in the RAN Formal Definition 15 Control PlaneData Plane Computer Networks Definition Forwarding packets - for both 3GPP User Plane and 3GPP Control Plane - based on local forwarding state Computing that forwarding plane using D/L & U/L Scheduling, Handoff, Admission Control, Link Aggregation Policy, SON Policy Control PlaneUser Plane 3GPP Definition UE: PDCP-u, RLC-u, MAC-u, PHY-u eNB: PDCP-u, RLC-u, MAC-u, PHY-u UE: NAS, RRC, PDCP-c, RLC-c, MAC-c, PHY-c eNB: RRC, PDCP-c, RLC-c, MAC-c, PHY-c
- 16. RRC PDUs PDCP Control RLC Control MAC Control PHY Configuration and Measurement RRC PDCP RLC MAC PHY 16 Link Aggregation Downlink Scheduling Uplink Scheduling Handoff Management Admission Control ONOS SD-RAN Controller Two Planes of Networking in the RAN SDN Control Plane
- 17. PDCP RLC MAC PHY 17 ONOS xRAN Controller xRAN Open APIs for SD-RAN RRC LocalControl(Lower)LocalControl(Higher) RAN Control Function RAN Control Function RAN Control Function
- 18. SD-RAN What is it? 18 SDN Control Plane 3GPP Control Plane
- 19. SD-RAN What is it? 19 RAN Control Plane
- 20. SD-RAN What is it? 20 Programmable / Configurable RAN Control Plane
- 21. 21 RAN Slicing Creating Dynamically Programmable Virtual Networks
- 22. 22 RAN Slicing Creating Dynamically Programmable Virtual Networks
- 23. 23 Disaggregation in RAN Horizontal and Vertical Keynote Template
- 24. 24 RAN Disaggregation C-RAN/vRAN: Horizontal Disaggregation Low RRC PDCP High RLC Low RLC High MAC Low MAC High PHY Low PHY Radio High Complexity & Performance Option 1 Option 2 Option 3 Option 4 Option 5 Option 6 Option 7 Option 8 CU DU
- 25. 25 Further Disaggregation CUPS + Functional Disaggregation RRC PDCP High RLC Low RLC High MAC Low MAC High PHY Low PHY Radio User Plane Power Control SDR Control Antenna Configuration Admission Control Measurement Reporting AMC Control Bearer Control Scheduling Control System Broadcast SON Control DC Control CA/LA Control Handover Control Paging Control MLB Control ICIC Control CN Control Interface CN User Interface RAN Slicing Control Control Plane Frame Control
- 26. 26 Support for RAN Slicing CUPS + Functional Disaggregation RRC PDCP High RLC Low RLC High MAC Low MAC High PHY Low PHY Radio User Plane Power Control SDR Control Antenna Configuration Admission Control Measurement Reporting AMC Control Bearer Control Scheduling Control System Broadcast SON Control DC Control CA/LA Control Handover Control Paging Control MLB Control ICIC Control CN Control Interface CN User Interface RAN Slicing Control Control Plane Frame Control Slow Scheduling Control Fast Scheduling Control RB Mapping Control
- 27. 27 Management & Analytics Programmability / Configuration in the RAN RRC PDCP High RLC Low RLC High MAC Low MAC High PHY Low PHY Radio Power Control SDR Control Antenna Configuration Admission Control Measurement Reporting AMC Control Bearer Control Scheduling Control System Broadcast SON Control DC Control CA/LA Control Handover Control Paging Control MLB Control ICIC Control CN Control Interface CN User Interface RAN Slicing Control Management&Analytics User Plane Control Plane Frame Control
- 28. 28 RAN Orchestration Tying with Overall Network Orchestration Frame Control RRC PDCP High RLC Low RLC High MAC Low MAC High PHY Low PHY Radio Power Control SDR Control Antenna Configuration Admission Control Measurement Reporting AMC Control Bearer Control Scheduling Control System Broadcast SON Control DC Control CA/LA Control Handover Control Paging Control MLB Control ICIC Control CN Control Interface CN User Interface RAN Slicing Control Management&Analytics RAN Control & Orchestration
- 29. 29 RAN in Distributed Access Cloud Access Cloud & MEC Keynote Template
- 30. 30 Distributed Compute Fabric Towards 5G Mobile Core
- 31. 31 SD-RAN in M-CORD Towards 5G Enablment Keynote Template Tom Tofigh - AT&T
- 33. 33 Distributed Compute Fabric Towards 5G CU Application Mobility Manage Authentication Session Manage User Plane Slice 1 Slice n Slice 1 Radio Resource Control X-haul Route Control Slicing Manager Control ONOS Applications … CBRS Proxy XOS Service RU CORE Slicing Edge AnalyticsRAN SlicingCU Configuration Management Slicing Management Service RU UE NG-(R)AN NG-UP AF AMF SMF PCF UDM DNNG6 NG1 NG-CP NRFNEF NG3 NG2 NG4 AUSF NGausf NGamf NGsmf NGpcfNGnrfNGnef NGudm NGaf Policy Control Master Orchestrator (ONAP) Unified & Open Mobility Interface (CORE) Unified & Open Mobility Interface (RAN) CORE ….. ONOS + XOS + OpenStack/Docker M-CORD Platform
- 34. 34 ONAP in M-CORD End-to-end Orchestration
- 35. 35 Where We Need To Go Towards 5G Enablement
- 36. 36 M-CORD: Open Reference Platform for 5G The Vision
- 37. 37 M-CORD: The State of the Union What We Have Accomplished So Far
- 38. 38 M-CORD: Open Call To Participate Innovate With Us