Date post: | 11-Jan-2016 |
Category: |
Documents |
Upload: | jasmine-chapman |
View: | 217 times |
Download: | 0 times |
All Optical Access Platforms for Fiber to the Home Networks
Francesco Matera, Alessandro Valenti, Edion Tego, [email protected]
In cooperation with Istituto Superiore delle Comunicazioni e delle Tecnologie dell’informazione (ISCOM)
FIAT LUX ConferenceRome, June 3-5 2015
2/182/18
Strategies for IP over Optics
APPs versus Physical Layers (does APPs exploit all the fiber bandwidth?)
Introduction of Measurement Plane (FP7 EU MPLANE project)
Optical network experimental infrastructure
Different platform for Digital Television on the same fibre
infrastructure (experimental investigation)
TV over IP (unicast, multicast); DVB-T over fiber (broadcast)
MPLANE: QoE vs QoS: Tests on bandwidth exploitation (TCP vs UDP)
Outline
2
FIAT LUX ConferenceRome, June 3-5 2015
3/183/18
Network Layer evolution
3
PP
Physical
Transport (TCP, UDP)
Network (IP)
Data Link
Session
Presentation
Application
APP
High bit rate transmission
IPTV VoLTE Games webTV
4G-5G Optical transmissions VDSL2-G.fast
MPLS VPLSCarrier Ethernet
New Reno, Cubic
Current service model:Best efforts, TCP, Content delivery network (CDN)But congestion and QoS-QoE?
Data Center
4/184/18 4
Network Business Models
For current networks too low revenues for network operators
To assure QoS: Class of Services based on logical and physical paths
Optical wavelengths (L1); LSP (MPLS, VPLS, Carrier Ethernet) (L2.5)
Software Defining Network and Network Function Virtualization
New IP strategies: Content Centric Networks (CCN) (or Information-
Centric Networks)
from host to content oriented: user looks for contents , not for host!
New role for routers: forwarding based on "name" and cash
FIAT LUX ConferenceRome, June 3-5 2015
5/185/18
Optical fiber: new ether
Switch/router
Optical fibre
D
GPON (Gigabit PON)
ITU-T G.984
1.2 or 2.4 Gbit/s down
155, 622, 1.2 or 2.4 Gbit/s up
Up to 64(physical)
Up to 128 (logical)
1490 nm Down
1310 nm Up
(1550 nm Down for RF
video)
GEM: G-PON Encapsulation
Method (supports Ethernet),
ATM
10/20 km (up
to 60 km
EU 2020 Agenda: 50% at 100 Gb/s, i.e FTTB/H
5
Two wavelengths: IP and DVB-T
IP managed with logical paths (VPLS)
FIAT LUX ConferenceRome, June 3-5 2015
6/186/18
TEST BED FUB-ISCOM
6
FIAT LUX ConferenceRome, June 3-5 2015
7/187/18 7
TV over IP: Unicast vs Multicast
Multicast: save bandwidth For Live TV We adopted Carrier Ethernet approach
Provider Backbone Bridge (PBB) Traffic Engineering (TE) we used VPLS (Virtual Private LAN Service) to bring TE
features in PBB (IETF draft-Balus) Fast zapping 120 ms
7FIAT LUX ConferenceRome, June 3-5 2015
8/188/188
AN5116-03 ePON FiberHome
CoS over VPLS in PON networks
9/189/18
IP
Server Multicast
Client1
Client2
Client3
J1
J2
J4
J3
ALC1ALC2
PBB-VPLS
Multicast layer 2Provider backbone bridge TE
10/1810/18 10
TPON
J1J4
J3
2
J4
WC
λ1λ1
λ1λ1
λ1λ1
λ1λ1
λ2λ2
J4
J3
J1
J2
Server Multicast
Client1
Client2
Client3
All optical domain
Multicast layer 1:All optical multicast
11/1811/18 11
RF TV Optical Spectrum
12/1812/18
MPLANE Architecture
13/1813/18
Use Cases
1. SLA Certification and Verification (FUB)
2. DaaS Troubleshooting (NEC)
3. Content and Service Popularity (NEC, ALBLF, Polito)
4. ISP/CDN Cooperation (ALBLF, FTW, Polito)
5. Streaming Delivery Active Measurements (Netvisor, TI, Fastweb)
6. WEB Browsing QoE(EURECOM, TI, Fastweb)
7. Mobile Network Performance (TID, FTW)
8. Large-Scale Network Anomaly Detection (Polito, FTW)
14/1814/18
mSLAcert active probe
A novel active probe has been introducted to verify and certify the bandwidth offerted to the users by the ISP
It is based on UDP tests that measures bandwidth at layer 2
TCP tests are also included to measure throughput (layer 4)
15/1815/18
mSLAcert status
Capabilities1. Ping – Dettail
2. Ping – Average
3. TCP throughput – Dettail
4. TCP throughput – Average
5. UDP throughput – Dettail
6. UDP throughput – Average
7. MSLA – Dettail
8. MSLA – Average
16/1816/18
Tested in LAB
SupervisorProbe
17/1817/18
TCP limits for bandwidth exploitation
17
FIAT LUX ConferenceRome, June 3-5 2015
18/1818/18
Bandwidth exploitation in GPON: TCP vs UDP (FP7 MPLANE)
18
TCP
RTT=0
RTT=100 ms
UDP
RTT=100 ms
100 Mb/s decreases down to 40 Mb/s with TCPNo reduction with UDP
FIAT LUX ConferenceRome, June 3-5 2015
19/1819/18 19
GPON 100 Mb/s Multisection (RTT=100 ms)
FIAT LUX ConferenceRome, June 3-5 2015
20/1820/18
Further investigations
SLA (layer 4 vs layer2) could be achieved with Multissession TCP tests (M>10) (IET Communication….);
It is under study for Misurainternet. Analysis of the only normative for QoS
(ETSI): TCP test in 10 ms We demonstrate that it is wrong at 100 Mb/s
21/1821/18
Conclusions
Unique Optical infrastructure for Unicast, Multicast, BroadcastBroadcast at physical layer: new “Optical Ether”To avoid congestion use Multicast
Introduction of Measurement plane (MPLANE)
Role of certification of SLA
Logical and physical paths offered by optical communications
FIAT LUX ConferenceRome, June 3-5 2015