FUTURE NETWORKS
S A R D A N A
Scalable Advanced Ring-based passive
Dense Access Network Architecture
SARDANA project aims at extending the limits of passive FTTH networks in terms of
scalability, resilience and minimum infrastructure requirements.
Main Objectives
At A Glance:
SARDANA
Scalable Advanced Ring-based
passive Dense Access Network
Architecture
Fibre-to-the-Home networks constitute a fundamental segment
with the required potential to match the huge capacity of
transport networks with the new user communication
demands, where deeper research is still to be performed.
Network access infrastructure investments are driven by
increased number of users requiring broadband access to
services enabled by the Internet
infrastructure and applications. Fixed
access to homes, hotspots, base stations
The intensive use
is best served digitally via fibre optic
of optical
capacity that provides a fundamental
transparency and
boost over the last mile copper solutions.
the latest opto-
Fax: +34 93 401 7200
Dense FTTH Passive Optical Networks
(PONs) is a cost efficient way to build
fibre access and SARDANA is a way to
demonstrate how the huge bandwidth
available through the fibre access can be
exploited in a cost efficient and reliable
manner. The key performances that
SARDANA project aims at radically
improve are the scalability and the
robustness, since constitute pillars of
such a cost-sensitive segment:
Email: jprat@tsc.upc.edu
o
Scalability is reached by means of
cascadable remote nodes in a new
hybrid architecture, allowing smoothest grow and
migration, and the new adoption of remotely-pumped
amplification, WDM/TDM overlay, and cascadable remote
nodes in a new hybrid architecture, while keeping the
passiveness of the PON and reducing civil work
investments.
o
The resulting network is able to serve more than 1000
users with symmetrical several hundred Mbit/s, spread
along distances up to 100 km, at 10Gbit/s, in a flexible
way, also supporting multi-operator service.
o
Robustness is achieved by means of the development of
new monitoring and electronic compensation strategies
over the PON, as well as by the passive central-ring
protection.
Project Coordinator
Josep Prat
Universitat Politècnica de Catalunya
(UPC)
Tel: +34 93 401 6455
Project website: www.ict-sardana.eu
Partners: UPC (ES), FT/Orange (FR),
Tellabs (FI), IntraCOM (GR), IT (PT),
ISCOM (IT), AIT (GR)
Duration: 1/2008 – 12/2010
Total Cost: 4.16 M€
EC Contribution: 2.6 M€
Contract Number: INFSO-ICT- 217122
electronic
technologies
enables to expand
the PON
performances and
functionality while
minimizing the
infrastructure
requirements at
both urban and
rural areas
The intensive use of the optical transparency and of the latest
opto-electronic technologies enables to expand the PON performances and functionality while minimizing the
infrastructure requirements at both urban and rural areas. SARDANA will set an evolutionary path for G/EPON and incorporate functionalities of metropolitan networks, envisaging access-metro convergence.
In order to fulfil the multi-disciplinary tasks and to
reach the challenges, the SARDANA partners join
their expertises:
Technical Approach
The
pursued
novel
SARDANA
network
transparently combines the WDM (Wavelength
o
UPC: Coordination, subsystem design.
Division Multiplexing) and the TDM (Time Division
o
FT: Architecture definition, ONU, Field-trial, Technical
Multiplexing) dimensions to reach the extra-large
management, Techno-Economic studies.
user-density. The proposed completely passive
o
Tellabs: GPON equipment, MAC, lab-demonstration.
resilient FTTH network is based on a WDM ring
o
IntraCOM: Management
for the transport of the
&Control plane, Service
large
amount
of
platform.
ONU
ON
1:K
downstream and upstream
λ ,…, λ
o
IT: Monitoring system, nonONU
ON
RN2
information (up to 1.2Tbit/s
linear transmission.
ONU
ON
RN1 λ ,…, λ
if using 64 wavelengths for
o
ISC: Remote nodes, non-linear
TDM TREE
RNi
2000 users) and TDM
amplification.
Upstream Signals
1:K
ONU
ON
ONU
trees, transmitting several
RSOA
o
AIT: Electronic PON impairment
WDM RING
CO
ONU
ON
compensation, Technowavelengths
from
RNj
Economic studies.
corresponding operators,
λ ,…, λ
PIN/APD
1:K
sharing
a
common
RNN
Bidirectional Transmission
Expected Impact
RNN-1
infrastructure.
Passive
ONU
ON
The Objectives and expected
Remote Nodes (RN), which
Downstream Signals
λ
,…, λ
Impact of SARDANA are:
implement cascadable 2to-1 fibre optical Add&Drop
o One
order-of-magnitude
functions
distribute
extension of current PON
SARDANA PON
different wavelengths to
performances, “aimed at
each of the access trees;
overcoming the expected
remote amplification is
long term limitations of
introduced at the RN by
current
internet
means of Erbium Doped
capabilities, architecture
Fibres
(EDFs)
to
and protocols”.
compensate
add/drop
o Smooth and increased
losses; optical pump for the
scalability and backwards
remote amplification is
compatibility
migration
provided
by
pumping
from
currently
deployed
lasers located at the
PONs.
Since
operators
face
a
high
degree
of
Central Office (CO), also providing extra Raman
uncertainty
at
this
level
(take
rates,
user
gain along the ring. Regarding the digital
demands, etc) and the necessity of feasibly
terminals, the SARDANA project aims at reuse, as
deferring
the
investments,
incremental
much as possible, standard G/E-PON equipment
scalability has become a major objective, as
of current and next-generation 10G-versions,
denoted in the FP7 Target Outcomes.
performing a quasi-transparent overlay between
D
1
D
m
U
D
1
U
2N
U
1
U
2N
m+1
D
2N
SARDANA CO
Standard
Optical
10G-GPON
Interface
OLT
SERVICE
PLATFORM
SARDANA ONT
MUX
&
Standard
Optical
10G-GPON
Interface
OLT
PUMP
SARDANA
&
PON
refl.optical
Interface
Standard
10G-PON
ONT
ROUT.
&
Standard
Optical
xPON
MONIT.
Interface
OLT
CONTROL
(control&management, monitoring, compensation)
TDM and WDM layers.
The work in SARDANA is organized into several
inter-related Work-Packages:
1. WP-Mg: Project Management and Outcomes.
2. WP-Ar: Network Architecture.
3. WP-Mc: MAC and Higher Layers
4. WP-Tr: Transmission and modulation formats.
5. WP-Sy: Network Subsystems.
6. WP-Im: Monitoring and adaptive compensation
of PON Impairments.
7. WP-Dm: Demonstrator and Field-trial.
During the project live, a Sardana Network
demonstrator will be built, engineered and multilayer operated; its main features will be also
demonstrated in a field trial, delivering new
generation bidirectional services to residential
users.
o Establishment of new intelligent monitoring
and compensation strategies to combat
impairment and faults for a trusted robust
PON.
o Implementation of the MAC, the Control and
Management planes, to demonstrate basic
resiliency, wavelength balancing and improved
service-aware traffic control.
o Economic effectiveness of the extended PON
approach.
o Demonstration and field-trial of the SARDANA
network.
o Recommendation for a technical solution of a
multi-operator shared infrastructure as an input
to European and National Regulatory bodies.
o SARDANA will result with experience and IPR
that helps European industry and research to
develop a competitive advantage.
SARDANA
March 2008