Bristol 5G city testbed with 5G-XHaul extensions
INTRODUCTION AND MM‐WAVE WORKPRESENTER: DANIEL CAMPS (I2CAT)
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5G‐XHAUL IN A NUTSHELL
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Focused on Transport
Convergence Wireless – Optical Backhaul – Fronthaul
SDN Control plane Unified for Wireless &
Optical Aware of demand spatio‐
temporal variations (in the RAN)
Interfaces for joint RAN –Transport
Data Plane Wireless
P2MP mm‐Wave (60 GHz) Sub‐6
Optical TSON WDM‐PON
• Huawei Technologies
• TU Dresden
• Telefónica I+D
• TES Electronic Solutions
• University of Bristol
• University of Thessaly
CONSORTIUM OVERVIEW
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• IHP GmbH (Coordinator)
• ADVA Optical Networking
• Airrays GmbH
• Blu Wireless Technology
• COSMOTE
• Fundació i2CAT
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• Universities (3x), Research Institutes (2x), SMEs (2x), Operators (2x), Industry partners (3x)
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
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Possible physical locations of a Small
Cell
Possible physical locations of a Small
Cell
Illustrative example of a
rooftop Macro Cell site
60 GHz
[1] NGMN White paper on 5G use cases and requirements
Physical infrastructure: Dense small cells and back/fronthaul transport units mounted on
lamp posts or street furniture Fiber presence in macro‐sites or some street cabinets
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
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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
Optical
Priority Queuing
TDM frame length
Time slice Allocation
Traffic Eng
Flow classification
Datacenter
WirelessSub wavelength FPGA at edge
5G‐XHAUL SDN CONTROLLED MM‐WAVE/SUB6 TRANSPORT
SDN controlled mm‐wave/Sub6 wireless transport:
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NLoSSub6
Mm-Wave
Mm-Wave antennasteering range
Mm-wave P2MP throughTDMA beam hopping, orSDMA.
PHYSICAL view SDN controller viewFor each link:
- QoS metrics: capacity, latency
- Physical metrics: TX_rate, packetdrops, SNR, etc
- Actions: Set bandwidth:- Through TDMA slots in mWave- Through contention setting in
Sub6
Allocates traffic
EXAMPLE USE CASE: LOAD BALANCING
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140 meters
Rooftop macro
Rooftop repeater
Street Level transport unit
Rooftop ↔ RooftopStreet ↔ RooftopStreet ↔ Street
State of the art
- Static 60 GHz links
- 32 units- 10 units- 10 units
P2MPbetween two links
OVERVIEW OF MM‐WAVE WORK IN 5G‐XHAUL
5G‐XHAUL mm‐wave focus is
5G‐XHAUL will work on:1. Antenna and Front End design2. Base band processing algorithms3. Localisation and Synchronization4. SDN Network control5. Standardization
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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
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Current IHP’s BF chipset prototype to be improved in theproject
Antenna model fromTES
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 802.11ad MAC
SDM, in a multiuser fashion Requires more RF chains (suitable for BS)
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Sample of BWT HYDRA mm-wave simulator with IEEE 802.11ad cannel model
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 clocksynchronization between transport nodes Complement IEEE 1588 in the wireless
segment Control plane used to configure roles
(master/slave)
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IHP’s 60GHz ranging prototypeperformance
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), 2014 11th Workshop on , vol., no., pp.1‐6, 12‐13, March 2014.
MM‐WAVE SDN NETWORKING: THEORY,EMULATION & EXPERIMENTAL VALIDATION
Resilient mm‐wave based meshdeployments
SDN datapath: Simple to minimise forwarding delay
SDN interfacing: What mm‐wave radio interface information
should we bring to the controller?
SDN driven multi‐level scheduling based on802.11ad MAC: SDN controller hierarchy for coarse resource allocation 11ad coordinator performs fine grained allocation
Mm‐wave and Sub6 cooperation driven by controller12
HYDRA mm-wave modules from BWT
Reliable PMP mm-wave mesh
A
C
B EH
G D F
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5G-XHAULControl Plane
Multi-level scheduling
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 802.11ay (NG60) MIMO architectures for mm‐wave Channel bonding
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CURRENT PROJECT STATUS
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Started July 2015. 3 year project. Current status:
Current work on deriving functional and performance requirements from: Packetized FH implementations (CPRI over Ethernet) NGFI: Potential functional splits from Sub6 and mm‐wave RANs
are being analyzed to dimension the transport network
WP2: Use Cases, Requirements, KPIs and Architecture
WP3: SDN based control plane
WP4: Programmable Wireless & OpticalData plane
WP5: Testbed deployment and evaluation
July 2015 Jan 2016
Feb 2016: D2.1 Requirements, Specifications and KPIs
Sept 2015: Kick Off in Bristol
Dec 2015: 2nd F2F Madrid