Download Heading towards 5G networks: market drivers

5g
Heading towards
5G networks:
market drivers
and requirements
on X-haul
Antonella Sanguineti
SPM Responsible for Optical and
Fronthaul
BROADBAND AND MEDIA
EVERYWHERE
5g
USE CASES
SMART VEHICLES,
TRANSPORT
CRITICAL SERVICES AND
INFRASTRUCTURE CONTROL
CRITICAL CONTROL
OF REMOTE DEVICES
HUMAN MACHINE
INTERACTION
SENSOR NETWORKS
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 2
Radio network evolution
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 3
5g Network Architecture
Management & Control
Radio Access
Applications
Cloud Infrastructure
Fronthaul
Transport
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 4
Ericsson Cloud RAN
Distributed RAN
Centralized RAN
Elastic RAN
Virtualized RAN
Improved interworking
between sites and layers
Colocation of resources
and maximum
performance in traffic
hotspots
Optimal coordination
across the network for
D-RAN and C-RAN
Introducing split
architecture for full
flexibility on the road to
5G
Coordination
Maximized spectrum efficiency and end-user experience
Fronthaul – a coordination enabler
Main Unit
CPRI
Main Unit
Fronthaul
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 5
RRU
Fronthaul is connectivity between functional blocks of a cellular radio
base station – ITU-T 802.1CM
The requirement chain
5G use cases radio technical requirements
›
High User Density
›
High Capacity
›
Low Device Energy Consumption
›
Good Cell Edge Performance
›
Reduced Signaling
›
Low Latency
›
Access to New Spectrum
›
Faster Data Throughput
›
High Availability
›
Quality Uplink
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 6
Transport factors for radio requirements
5G
New
Security
Interfaces
Timing
Latency
Capacity
Connections
Fronthaul: Other aspects to
consider
Timing
Security
Connection
New
Interfaces
Capacity
Latency
FH
Evolution
Cost
Fiber role
Scalability
TCO
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 7
From 4G to 5G fronthaul
PPU/RCU
5G network
DU/BPU Cluster site
eCPRI
4G network
› One common Fronthaul infrastructure, able to
transport 4G CPRI and 5G eCPRI new standard
interfaces (ref.ITU-T G.801CM)
Overall 5G solution
LTE-Evolution
NX/NR
Backwards compatible
Existing spectrum
New spectrum
GHz AB 2016
3 GHz
10 GHz
Ericsson Internal | ©1Ericsson
| 2016-09-17
| Page 830 GHz
100
GHz
– CPRI: TDM based – TDM or DWDM network
– eCPRI: packet based – bridged network
› Matching delay and scalability requirements of
both interfaces
Fronthaul
the fiber constraints
The more wireless we become, the more
fixed-line dependent we become. Basically
all you’re doing is building this big massive
fixed-line network with wireless antennas
hanging on the end of it.
Randall Stephenson, CEO, AT&T
› 5G has much to do fiber installation and
site acquisition
Topology of existing fiber infrastructure may strongly
influence Operators’ placement of radios.
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 9
The fiber constraints
Rings
Point to point
Chains
\
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 10
The fiber constraints
Rings
Point to point
Chains
\
› A modular optical solution is key to fulfil fiber plant constraints in 4G networks
› High densification in 5G will require even more building blocks to implement bridged fronthaul
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 11
Scalability & capacity
CPRI rates
› Scalability from the transport
perspective is the ability of the
network to support radio evolution
without architectural changes, at
the right cost
› It strictly connected to:
– the maximum transport resources
exploitation (e.g. fiber)
– Cost of the technology (higher rates
interfaces)
– Network infrastructure future proof-ness
– Coexistence of old and new interfaces
CPRIxx
CPRI8
CPRI7
radios / C-RAN Hub
6
10G
25G
40G
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 12
eCPRI rates
12
24
48
Technology & cost
10G
grey
Cost
guaranteed by
production binning
I-temp
C-temp
10G SFP+’s
I-Temp 10GBASE-LR “Lite”
25G
WDM
10G
WDM
1600ps/nm, 50GHz
•
Stringent OSNR specs
10G DWDM SFP+’s
•
I-Temp 100GHz
•
400 ps/nm, 25dB
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 13
Time
Future 25G Tunable SFP28
“Transport” DWDM
transceivers
•
guaranteed by
design
•
25G NRZ InP MZ Modulator
•
>220ps/nm, 100 GHz locker-less
•
-20 dBm sensitivity @5E-5
(APD receiver, RS FEC). > 20 dB
budget
•
C and L band variants
•
~ 2x Tunable 10G cost
(T)-SFP+
(T)-SFP28
The Role of fiber and DWDM
Fiber infrastructure supports
Broadband is a key element for cities
societal, economical and
environmental development
› High rate traffic over a Reliable Transport Layer
› Passive, distributed and open infrastructure
DWDM technology
› Exploits operators fiber investment
› Coexistence of GPON, CPRI, Ethernet, TDM (CPRI is TDM)
› Seamless evolution towards 5G X-haul
DWDM is future proof
Superior network performance
as essential component for
real-time context based
decision process and action
Society and individuals
requirements of access and
instant sharing of
information, data and videos
(4K, 3D)
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 14
›
›
›
›
›
Mature technology - cost reduction curve
Up to 96 channels – for best fiber usage
Scalable from 1G to 100G and higher
Integrated into ERS with pluggable modules
Ensures security, integrity and low latency
WDM transport
› 2.5G DWDM
– Higher cost per bit
– 48 channels (up to 192 with 50GHz and LBand)
› 10G DWDM
– Proper cost per bit
– 48 channels (up to 192 with 50GHz and LBand)
– Best technology for higher rates
› 25G DWDM
– Proper cost per bit
– Feasible with same form factor of SFP+
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 15
› 2.5G CWDM
– Lower cost per wavelength
– 18 channels (doubling possible, with 2
temperature stabilized lasers in the same
filter)
› 10G CWDM
– Proper cost per bit (no main differences
with respect to DWDM)
– 18 channels (doubling possible with 2
lasers in the same filter)
› 25G CWDM
– No plan
One solution does not fit all
the DWDM building block approach
Timing
Security
Fiber fronthaul ensures lowest latency
Connection
Capacity
Latency
FH
Evolution
New
› DWDM
provides maximum fiber
Interfaces
exploitation
– Lowest cost per bit
Cost
– scalability
› Technologies available at volumes to fit
Scalability
both CPRI and Packet interface higher
rates – C-temp, I-temp
Fiber role
λ1
λ2
λ3
λ4
λ5
λ6
DWDM
TCO
› DWDM building blocks, both active
and passive to create many different
network topologies
› DWDM infrastructure as future proof
investment for LTE, LTE-evolution and
5G fronthaul
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 16
Next time…
Timing
Security
Connection
New
Interfaces
Capacity
Latency
FH
Evolution
Cost
Fiber role
Scalability
TCO
TCO
automation
flexibilty
Ericsson Internal | © Ericsson AB 2016 | 2016-09-17 | Page 17
5g
Q&A
Antonella Sanguineti
SPM Responsible for Optical and
Fronthaul