4 th OSA Workshop Paris

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Rudolf Todd
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1 4 th OSA Workshop Paris

distribution of industrial core technologies in the field of

2 Mission ETRImakes contribution to the nation s economic and social development through research, development and distribution of industrial core technologies in the field of Information, Communications, Electronics, Broadcasting and Convergence technologies. 1

3 Major achievements in Communication Research Area 1976 Established ETRI 1995 Commercialize CDMA for the first time in the world 1999 Synchronized IMT 2000 STP system 2004 WiBro prototype 2007 World s first 3.6Gbps 4 th generation mobile communication technology(nola) G LTE-Advanced Technology ~ 2017 under development of 5G Key technology 2

Project Development of 5G mobile access platform technology based on virtualization converged with computing Period Object 2016.4.1. ~ 2020.12.31.

4 Project Development of 5G mobile access platform technology based on virtualization converged with computing Period Object ~ (57Months) Develop the virtualization base station system that can operate in real time by building a virtualization platform that can accommodate communication functions and virtualizing multi-rat access function of 5G mobile communication - This work has been supported by Institute for Information & communications Technology Promotion(IITP) grant funded by the Korean government(msit). [No ] 3

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6 I. INTRODUCTION: 5G SYSTEMS K1-Enhanced Mobile Broadband Smart city cameras 1 2 A E B D F C 3D G ㅁ Gigabytes in a second 3D Video 4K screens Work & play in the cloud Augmented reality ㅅ Voice 3 Sensor NW ㄱ ㅂ ㄴ Industrial ㄹ & vehicular automation Mission critical broadband K3-Massive IoT 4 Sensor ㄷ Self Driving Car K2- Low Latency Different requirements on various service Differentiated networks for optimal service delivery. ized systems are required to provide integrated services 5

7 I. INTRODUCTION: VIRTUALIZATION FOR 5G SYSTEMS Paradigm change of communication equipment (Open HW / SW) from based on HW to based on SW Flexible systems required by 5G Solve with system virtualization Efficient use of limited frequency resources Efficient and resilient deployment of radio resources Accepts network diversity to accommodate various IoT devices (Multi-RAT acceptance) Actively coping with changes in standards A new standard is born every 1.5 years Adapt to rapidly changing user service requirements (easy to provide new services) Benefit Flexibility in system installation and maintenance / management Reduce OPEX through remote control and management of the system Reduce CAPEX by performing various functions with one device Efficient use of wireless resources to increase profits Various applications such as temporary base station (educational, measurement, military, emergency network construction, special purpose satellite, etc.) Easy portability / coherence between systems Network Slicing, RAN Slicing Utilization / matching 6

8 I. INTRODUCTION: 5G VIRTUALIZATION ized CPU, Storage, Network by HYPERVISOR New Innovative Development Paradigm SW, independent of HW Increase Portability of SW Increase System Flexibility Apply to Wired Network: Cloud Server, Edge Server, Router Mobile Network: EPC, HSS, MEC Server Now enb(bs) ization 7

9 II. SYSTEM DESIGN: SYSTEM SPLIT STRUCTURE System Split CU: Collection of Digital Processing, Centralized, all protocols beyond the PHY layer except (Radio Frequency). RU: Collection of Radio Processing, Distributed, most of it is constituted by passive HW, PHY Layer for performance ization VNF: Fully ized PNF: Non or Partially ized EPC VM Computing CPU/ GPU MEC VM Storage Central Unit(CU) SON/RRM VM/BINs/LIBs GPU: Graphic Processing Uint EPC: Evolved Packet Core MEC: Mobile Edge Computing VNF: Network Function L2/L3 Network Hypervisor/Container Engine BS PHY CU-RU I/F VM/BINs/LIBs VM/BINs/LIBs VM/BINs/LIBs Common BINs/LIBs Storage Network DSP FPGA CU: Central Unit RU: Remote Unit RRU: Remote Radio Unit RRPU: Remote Radio PHY Unit Management & Orchestrator Fronthaul CU-RU CU-RU I/F I/F CU-RU CU-RU I/F I/F Remote Unit(RU) RRU RRU FPGA/DSP AD/DA FPGA/DSP AD/DA GPS & AD/DA GPS Timing & Timing AD/DA RRPU RRPU PHY Control L1 Control VM/BINs/LIBs VM/BINs/LIBs VM/BINs/LIBs VM VM VM Common BINs/LIBs Computing Storage Network Computing Storage Network Hypervisor/Container Engine ization Layer ACC Layer CPU Storage Network DSP FPGA AD/DA CPU Storage Network DSP FPGA AD/DA GPU GPS GPS Management & Orchestrator Management & Orchestrator Fronthaul To meet Bandwidth & Latency Medium: 1G/10G Ethernet, optical, and USB 3.0 Standard: RoF, CPRI, and nfapi 8

10 II. SYSTEM DESIGN : MODEM Hardware Resources CPU, Storage, and Network Co-processor (eg, Intel Xeon PHI KNL) for SW-based acceleration DSP/FPGA for HW-based acceleration SW PHY uses the virtualization resources to perform the LTE MODEM uses Linux (Redhat or Ubuntu) as a virtual machine (VM) independent of platform HW PHY SW for Resource VM/BINs/LIBs Open API (eg. OpenCL) PHY ACC LIBs PHY ACC LIBs some functions of a modem with high complexity in the form of a library SW-based modem acceleration: vectorization/parallelization using a plurality of virtual computing resources HW-based modem acceleration: using DSP/FPGA: allowing access to the SW PHY via standardized/open APIs such as Open API for increasing portability Computing CPU/ GPU Storage Hypervisor/Container Engine Storage Network Network Common BINs/LIBs Devices DSP/ FPGA 9

11 II. SYSTEM DESIGN : WIRELESS PROTOCOL Hardware Resources CPU, Storage, and Network, Co-processor as Wireless MODEM DPDK by Intel is used for data plane acceleration. Wireless Protocols SON, RRM, L3, L2, S1-U and GTP performs the LTE radio access protocol using virtualization resources uses Linux (Redhat or Ubuntu) as a virtual machine (VM) independent of platform HW SON/RRM L3 L2 S1-U/GTP Computing Storage VM Network DPDK Device Open API (eg. OpenCL) Integrity ROHC PTL ACC LIBs Ciphering Device PTL ACC LIBs some functions (eg Integrity, ROHC, Ciphering, etc.) of a wireless access protocol with high performance complexity SW-based PLT acceleration: vectorization/parallelization using a plurality of virtual computing resources NO HW-based PLT acceleration Open API as Wireless MODEM CPU Hypervisor Storage Network SDN NIC Co- Processor 10

12 II. SYSTEM DESIGN : SYSTEM SPLIT USE CASE CU-VNF L1 ization L2 ization L2P ization SON/RRM SON/RRM RRC/GTP RRC/GTP PDCP L3 ization SON/RRM PDCP RLC L3+ ization SON/RRM RRC/GTP RLC MAC SON/RRM RRC/GTP PDCP MAC PHY VM/BINs VM/BINs VM/BINs VM/BINs VM/BINs Infrastructure Legacy Cell I Legacy Cell II Legacy Cell III Legacy Cell IV ized Cell COTS Cell RRC/GTP PDCP RLC MAC PHY PDCP RLC MAC PHY RLC MAC PHY PHY PHY VM/BINs Infrastructure RU-PNF 11

III. IMPLEMENTATION: SERVICE VIRTUALIZATION Service ization Service virtualization refers to the virtualization of the part has virtualized SON and RRM also referred to as L3 + layer virtualization

13 III. IMPLEMENTATION: SERVICE VIRTUALIZATION Service ization Service virtualization refers to the virtualization of the part has virtualized SON and RRM also referred to as L3 + layer virtualization in the sense of virtualization for higher ones than layer 3 Functional Arrangement CU: L3+ elements such as SON and RRM are placed, ized RU: other protocols such as RRC, GTP, L2, L3, modem, and are placed, non- ized 12

IV. TESTING & ENVIRONMENT Implementation The CU-VNF with virtualization SON and RRM was virtualized on the Intel Xeonbased HW through the VMware ESXi hypervisor The RU-PNF with L1/L2/L3 and functions

UE(User Equipment) uses a commercially available LTE terminal The EPC is connected behind the CU-VNF and configured to be able to interwork with the Internet.

14 IV. TESTING & ENVIRONMENT Implementation The CU-VNF with virtualization SON and RRM was virtualized on the Intel Xeonbased HW through the VMware ESXi hypervisor The RU-PNF with L1/L2/L3 and functions are implemented on a Freescale 9131 based small cell base EVM board. UE(User Equipment) uses a commercially available LTE terminal The EPC is connected behind the CU-VNF and configured to be able to interwork with the Internet. 13 Testing Two commercial terminals operated LTE Band3 and Band5 There is no problem making LTE attach and playing YouTube video stream One RU-PNF is responsible for the scan function of the neighboring cells for the SON NMM(Network Monitoring Mode) function. CU-VNF confirms that the cell search and the SIB reading procedure The PCI Confusion/Collision problem was resolved and that the correct PCIs were allocated to each cell

15 V. CONCLUSION ization makes communication functions very flexible Key component for 5G System BS ization: Include many difficulties in realizing virtualization because involve highly complex communication elements. Acceleration Technology is needed. Step-by-Step Implementation is needed that increases the weight of virtualization after confirming the feasibility of virtualization Current & Future work L2+ ization L1 ization 14

SK Telecom proprietary

0 2016 SK Telecom proprietary Mobile network evolution 5G will require an All-IT infra to support services such as VR and mission-critical IoT services 1G 2G 3G 4G 5G Tech Digital Packet LTE All-IP New