INTRODUCTION AND MM WAVE WORK PRESENTER: DANIEL CAMPS (I2CAT) Bristol 5G city testbed with 5G-XHaul extensions

Transcription

1 INTRODUCTION AND MM WAVE WORK PRESENTER: DANIEL CAMPS (I2CAT) Bristol 5G city testbed with 5G-XHaul extensions 1

2 5G XHAUL IN A NUTSHELL Focused on Transport SDN Control plane Unified for Wireless & Optical Aware of demand spatiotemporal variations (in the RAN) Interfaces for joint RAN Transport Convergence Wireless Optical Backhaul Fronthaul Data Plane Wireless P2MP mm Wave (60 GHz) Sub 6 Optical TSON WDM PON 2

3 CONSORTIUM OVERVIEW IHP GmbH (Coordinator) ADVA Optical Networking Airrays GmbH Blu Wireless Technology COSMOTE Fundació i2cat Huawei Technologies TU Dresden Telefónica I+D TES Electronic Solutions University of Bristol University of Thessaly Universities (3x), Research Institutes (2x), SMEs (2x), Operators (2x), Industry partners (3x) 3 3

4 DENSE URBAN SCENARIO As per NGMN [1]: 2500 active users / Km2 300Mbps DL / 50 Mbps UL Example applications: Pervasive high resolution video Augmented reality 3D services Illustrative example of a rooftop Macro Cell site 60 GHz Physical infrastructure: Possible physical locations of a Small Cell Dense small cells and back/fronthaul transport units mounted on lamp posts or street furniture Fiber presence in macro sites or some street cabinets [1] NGMN White paper on 5G use cases and requirements 4

5 5G XHAUL OVERVIEW OF OPTICAL INNOVATIONS WDM PON Increased data rates up to 25+ Gbps (new modulation formats). 40 ONUs/ OLT Colorless ONU transceivers with centralized wavelength assignment SDN controlled interface shutdown (SFP+) Time Shared Optical Networks (TSON) Very granular bandwidth allocation through TDM frame/flexigrid Protocol Convergence through Ethernet access. SDN enabled datapath Time slice Allocation Datacenter Priority Queuing Traffi c Eng Wireless Flow classificatio n TDM frame lengt h Sub wavelength FPGA at edge Optical B. R. Rofoee, K. Katsalis, Y. Yan, Y. Shu, T. Korakis, L. Tassiulas, A. Tzanakaki, G. Zervas, D. Simeonidou, "Demonstration of Service-differentiated Communications over Converged Optical Sub-Wavelength and LTE/WiFi Networks using GEANT Link," in Proc. of OFC 2015, Los Angeles, California, USA 5

6 5G XHAUL SDN CONTROLLED MM WAVE/SUB6 TRANSPORT SDN controlled mm wave/sub6 wireless transport: PHYSICAL view NLoS Sub6 Mm-Wave antenna steering range SDN controller view For each link: - QoS metrics: capacity, latency - Physical metrics: TX_rate, packet drops, SNR, etc Mm- Wave - Actions: Set bandwidth: - Through TDMA slots in mwave - Through contention setting in Sub6 Mm-wave P2MP through TDMA beam hopping, or SDMA. Allocates traffic 6

7 EXAMPLE USE CASE: LOAD BALANCING State of the art - Static 60 GHz links - 32 units - 10 units - 10 units 140 meters P2MPbetween two links Rooftop macro Rooftop repeater Street Level transport unit Rooftop Rooftop Street Rooftop Street Street 7

8 OVERVIEW OF MM WAVE WORK IN 5G XHAUL 5G XHAUL mm wave focus is 5G XHAUL will work on: 1. Antenna and Front End design 2. Base band processing algorithms 3. Localisation and Synchronization 4. SDN Network control 5. Standardization 8

9 ANTENNA AND FRONT END DESIGN: EXPERIMENTAL WORK Preliminary antenna design: Array of 8x4 16x4 printed radiating elements; 60 GHz band 2D (azimuth and elevation) steering Horizontal steering range of ±45 4 such arrays for a 360 azimuthal coverage Beam steering front end module Antenna integrated with beamforming (BF) IC on the same PCB Each BF IC chip contains PAs, LNAs, phase shifters A new BF IC will be manufactured for the project More BF ICs could be used to form larger array Antenna model from TES Current IHP s BF chipset prototype to be improved in the project 9

10 BASE BAND PROCESSING: THEORY & SIMULATIONS Multi Stream for mm wave P2P Spatial multiplexing in low rank mm Wave channels Transceiver architectures: Hybrid: Large arrays with antenna elements clustered in few RF chains Increased data rates in realistic BH conditions: e.g. 30 Gbps at 150+ meters Mm wave MIMO Channel estimation Using Krylov methods or compressed sensing Beam alignment and tracking algorithms Extensions for mm wave P2MP TDMA based beam switching: To be validated experimentally using a ad MAC SDM, in a multiuser fashion Requires more RF chains (suitable for BS) Sample of BWT HYDRA mm-wave simulator with IEEE ad cannel model 10

11 SYNCHRONIZATION AND RANGING: THEORY & EXPERIMENTATION Mm wave based ranging: Can be used in the RAN to track user location and allocate BH/FH resources accordingly Current ToF based prototype available with cm level precisión on LoS conditions The same functionality can be used for clock synchronization between transport nodes Complement IEEE 1588 in the wireless segment Control plane used to configure roles (master/slave) IHP s 60GHz ranging prototype performance 1588 M. Ehrig, M. Petri. V. Sark. J. Gutiérrez and E. Grass, Combined high resolution ranging and high data rate wireless communication system in the 60 GHz band, in Positioning, Navigation and Communication (WPNC), th Workshop on, vol., no., pp.1 6, 12 13, March

12 MM WAVE SDN NETWORKING: THEORY, EMULATION & EXPERIMENTAL VALIDATION Resilient mm wave based mesh deployments SDN datapath: Simple to minimise forwarding delay SDN interfacing: What mm wave radio interface information should we bring to the controller? HYDRA mm-wave modules from BWT SDN driven multi level scheduling based on ad MAC: SDN controller hierarchy for coarse resource allocation 11ad coordinator performs fine grained allocation 5G-XHAUL Control Plane Reliable PMP mmwave mesh H * C A* B E G D * F Mm wave and Sub6 cooperation driven by controller Multi-level scheduling 12

13 MM WAVE TARGET STANDARD CONTRIBUTIONS ETSI mwt ISG working group on mm wave Expected relevant contributions to regulatory and standards bodies Wi Fi Alliance: 60 GHz TTG group working on Wi Gig certification 60 GHz MKT working on future marketing requirements IEEE ay (NG60) MIMO architectures for mm wave Channel bonding 13

14 5G XHAUL CITY WIDE TESTBED IN BRISTOL 14

15 CURRENT PROJECT STATUS Started July year project. Current status: Sept 2015: Kick Off in Bristol Dec 2015: 2nd F2F Madrid July 2015 Jan 2016 Feb 2016: D2.1 Requirements, Specifications and KPIs WP2: Use Cases, Requirements, KPIs and Architecture Current work on deriving functional and performance requirements from: Packetized FH implementations (CPRI over Ethernet) WP3: SDN based control plane WP4: Programmable Wireless & Optical Data plane WP5: Testbed deployment and evaluation NGFI: Potential functional splits from Sub6 and mm wave RANs are being analyzed to dimension the transport network 15

16 Thanks for your attention! Questions?