Fixed networksLuc Martens

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Introduction

Competence on all aspects (from physical layer toapplication/service layer) of fixed telecommunicationnetworks: Public networks: backbone, PSTN, access networks

(DSL and cable) Private company networks In-home networks

Technologies under study: IP-V4 / IP-V6 / MPLS,Ethernet, SDH, Optical (packet, burst, circuit), DSL, Cable,Fiber Channel, InfiniBand

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Physical layer

Physical layer aspects of cable and fiber accessnetworks

Propagation, error sources and the impact on signalquality

Measurement methodologies to acquire physical layerparameters

Ingress noise inupstream (0-23 MHz)on a cable networkover one day

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Planning and dimensioning

Network infrastructure (single layer, multilayer, multi-domain, overlay,grid, spare capacity, …)

Computing and storage infrastructure (grid, thin client, VoD servers, Techno-Economic

(CapEx, OpEx,multi-period,uncertainty, …)

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Millio

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IRU (15 year)

IRU (15 year) +

MET & DefensieLease (5 year)

Lease (5 year) +

MET & DefensieWL (1*10G) (5

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cost

IRU (15 year)IRU (15 year) + MET& Def.Lease (5 year)Lease (5 year) + MET& Def.WL (1*1G) (5 year)

Design of next-generationBELNET transmission infrastructure

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Architectures

Single Layer(IP, Ethernet,optical, …)

Multilayer(IP/Ethernet/SDH/optical)

Partitioning(home/access/aggregation/core)

Overlay(content,routing, ...)

Grid Node (buffer,

scheduling, …)

CPE

Residential triple play

Business site

Business site

Business site

VDSL

VDSL

IP/ MPLSMetro-core network

VPN ISP 3

VPN ISP 2

IP Routing(IES)

BRAS

BNG

E-LSP for internet accessE-LSP for VIDEOE-LSP for E-LINE/E-LAN service

SVID=1SVID=11

SVID=22SVID=2

Carrier grade ethernet switch

ISPx

Access node (DSLAM, …)

Video

WWW

ISPn

OptionalEthernet aggr.

Access node (DSLAM, …)

Meshed Carrier Grade EthernetMetro aggregation-network

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Protocols

Medium Access (PON, Cable) Routing (anycast, multicast, …) Traffic engineering and resource allocation (mobility

support, physical layer impact, signaling, …) Resilience (multi-domain, multilayer, …)

Cable ModemCPE Interface

(CMCI)CMTS

RF Interface

Cable ModemRF Interface

OSS Interface(OSSI)

GenericHeadendRouter orBackboneTransportAdapter

CustomerPremisesEquipment

O/ENode

O/ENode

DistributionNetwork

NetworkTermi-nation

Demod

Mod

Cable ModemTermination System

RX

TX

Fiber

Coax

CableModem

Cable ModemTermination System

Network Side Interface(CMTS-NSI)

EuroDOCSISMACspecificationOn HFC cablenetworks

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Services and applications (1)

Internet VoIP Video / Interactive TV (DVB/MHP based, IPTV)

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Services and applications (2)

Time-shifted Television RTP/RTSP/RTCP

PHCVM RPCPHCVM RPC clientserver

proxy

RTSPMessage

cache

describe <program url>

ok + SDP data

setup <stream> to clientIP:port x

ok

play <program url> at <time>

ok

setup <stream> to proxyIP:port y

ok

play <program url> at <time>

ok

RTP stream to clientIP:port xRTP stream to proxyIP:port y

update cache state

RTSPRTPCSE

internal

verdict?

cache from server!

RTSPSession

PacketBuffer C: CacherCVM: CacheVerdictManager

RP: RTSPProxyPH: PacketHandler

1a

2a

0 initialize

streamand

cache

updatecachestates

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Services and Applications (3): iDTV test platform

Development of MHP applications

Multimedia Home Platform (MHP)

Actual test environment MPEG-2 HW encoder Hardware multiplexer Modulator ADB Dev Boxes

(Osmosys middleware)

Emulated test environments Osmosys SDK IRT Reference Implementation

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Services and Applications (4): iDTV test platform

Explore the possibilities of the platform Social interactions and communication Content creation Personalization ...

Example applications iDTV photo-album Messaging Videoconferencing eID integration

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Services and Applications (5): iDTV applications

Instant Messaging (IM)

I am watching … Program

recommendations Social networking Personalization

based on your socialnetwork

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Services and Applications (6): iDTV applications

Belgian Electronic Identity Card Use Cases

T-commerce Secured IM T-Banking T-Government

How? Latest MHP versions

Security and Trust Service API (SATSA) Older MHP versions

Open Card Framework (OCF)

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Services and Applications (7): Personalization &Visualization

Problem: Consumer gets lost in the profusion of content

Solutions: Offer personalized content Explore new navigation and visualization paradigms