Standardization Issues for Mobile IPTVC1%A4%C0... · 2012-03-20 · KRnet2010 2/38 Contents - Mobile IPTV Approaches - Mobile IPTV 전송및네트워킹기술 - Mobile IPTV...

KRnet 2010

Standardization Issues for Mobile IPTV

Ilyoung Chong

한국외국어대학교

KRnet 2010

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Contents

- Mobile IPTV Approaches

- Mobile IPTV 전송 및 네트워킹기술

- Mobile IPTV 시스템/서비스 관리 기술

- TTA의 Mobile IPTV 표준화 요구사항

- Further Issues for Mobile IPTV

- Discussions

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Mobile IPTV Approaches

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Mobile Revolution in Devices

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Mobile Internet Usage - Paradigm Shift

“I am certain that the mobile telecoms world will count its time in two Eras. The Era BI: time Before the iPhone, and the ERA AI: time After the iPhone”

Author of “Digital Korea”, Tomi T Ahonen

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Mobile IPTV 서비스 형태

방송형 서비스: Live Broadcasting

방송서버 다수 시청자 (One-to-Many)

멀티캐스트 (Multicast) 전송

대화형 서비스: On Demand

방송 서버 시청자 (One-to-One)

유니캐스트 (Unicast) 전송

혼합형 서비스 (방송형 + 대화형)

방송형: Multicast

대화형: Unicast)

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Technical

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Mobile IPTV의 예: ETRI의 Follow Me TV

• 이종환경 적응적 미디어 처리기술 + QoS 보장 기술 + 품질 보장형 이동성 제어 기술

• 소비자의 위치, 단말의 접속망, 단말의 성능에 상관없이 원하는 IPTV 방송을 시청

언제어디서나시청 가능한 TV

Follow Me TV

• Bandwidth / Delay

• QoS Availability

• Best effort

IP backboneat subway

• Resolution

• Computing Power

• Link speed

• Hard-wired codecs

at office

Cellular

Wireless IP

Ethernet ?

at home

Wireless IP

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Mobile IPTV의 예: ETRI 의 Take-out IPTV 서비스

•가정에서시청하던 IPTV 콘텐츠를이동단말에서끊기지않고볼수있는서비스

•개인 맞춤형 시청 / 시청 이력 및 선호도에 따른 IPTV 서비스

언제어디서나, 쉽게 볼 수 있는 방송

Take Out TV

All-IP Net.

방송 송출 서버

고정형 IP 단말

개인형 이동 단말

가정용 이동 단말

개인형 이동 단말

Take Out TV

이동성 지원

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Technical approaches to Mobile IPTV: Mobile TV plus IP

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Technical approaches to Mobile IPTV: Mobile TV plus IP

uses the traditional digital broadcast networks to deliver IP-based audio, video, graphics and other broadband data services

is a prime example of the increasing convergence of broadcasting, telecommunications and computing

pursued to build a content environment that combines the stability and usability of broadcasting and the diverse services of Internet.

outstanding activities in this approach:

Digital Video Broadcast (DVB)-CBMS (Convergence of Broadcasting and Mobile Services)

WorldDAB (DAB: Digital Audio Broadcasting) Forum

DVB-CBMS is developing bi-directional mobile IP based broadcasting protocol specifications over DVB-H

WorldDAB Forum is enhancing and extending Eureka 147 to support IP based services

c.f., even though Eureka 147 is classified as Mobile IPTV technically, the usage of broadcasting networks may incur the loss of individuality of IP

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Technical approaches to Mobile IPTV: Cellular approach

Open Mobile Alliance (OMA) BCAST is working for IP based mobile broadcasting networks

Its goals: to define an end-to-end framework for mobile broadcast and compile the set of necessary enablers

Its feature: bearer agnostic, which means any Broadcast Distribution Network can be adopted as its transport means.

However, OMA BCAST is only applicable to mobile terminals up to now and showing interest in expanding its specification to cover fixed terminals in Phase II.

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Technical approaches to Mobile IPTV: Internet approach

There are already countless Internet video services worldwide:

usually termed as Internet TV or Web TV

outgrown for a niche entertainment business

quite different models developing on the business type and infrastructure used.

This approach is open for anybody to play a role in the value chain: anybody can be a content provider, a service provider, or simply a consumer.

In addition, the openness gives global reach.

has a short coming that the quality of services is not guaranteed since it is based on the best effort service model.

considering its rapid adaptation to customer needs, this approach may be dominant in the near future.

mobile devices use the Internet, users can access an IPTV service through various wireless access networks.

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Technical approaches to Mobile IPTV: IPTV plus Mobile approach

IPTV is originally targeted to fixed terminals such as set-top boxes,

however, issues on the requirements for mobility support were raised as an out-growth under the auspices of the Fixed-Mobile Convergence (FMC) trend

The outstanding activities are ATIS in the US, Open IPTV Forum, and ITU-T FG IPTV internationally

ITU-T FG IPTV: collecting requirements regarding mobility and wireless characteristics.

ATIS: has not shown any interest in mobility support yet.

OIF(Open IPTV Forum): mobility service entirely based on IMS (IP Multimedia Subsystem)

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Mobile IPTV의 서비스 체계

전송기술 WiMax

(MBS)

DVB

(DVB-H)

3GPP

(MBMS)

3GPP2

(BCMCS)

IP Networking - UDP/TCP, - IP Multicasting Protocols (예, Multicast Routing Protocol, IGMP)

서비스/시스템관리

DVB

(CMBS)

Qualcom

(MediaFLO)

OMA

(BCAST)

JTC1

(MMC)

Mobile IPTV 서비스미들웨어플랫폼

Mobile IPTV Applications

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Mobile IPTV 전송 및 네트워킹기술

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Networking & Transport Capabilities for Mobile IPTV

IP 멀티캐스팅 (Access Independent)

Multicast Routing Protocols: DVMRP, PIM, ...

IGMP (Internet Group Management Protocol): for IPv4

MLD (Multicast Listener Discovery): for IPv6ch

무선망 (IP) 멀티캐스팅 (Access Dependent)

3GPP/MBMS (이동통신망)

3GPP2/BCMCS (이동통신망)

WiMax/MBS (이동통신망)

DVB/DVB-H (방송망)

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3GPP/MBMS

Video Streaming (128 kbps) session

Video Streaming (64 kbps) session

File download (best effort) session

모바일 홈

쇼팽

스포츠

중계

스포츠 중계 비디오

제품 광고 비디오

제품 카탈로그

MBMS

User Services

P-to-M (MBMS) Bearer Service

HTTP (best effort) session

제품 주문 처리 및

부가 정보 검색

BM-SC

Web

Server

content

provider

3GPP UTRAN & Core Network

P-to-P Bearer Service

User Equipment

P-to-M (MBMS) Bearer Services

출처: 고석주 교수 발표자료 (경북대)

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3GPP2/BCMCS

BCMCS

Broadcast and Multicast Services 제공

For cdma2000 wireless access networks

“Secure Multicast in cdma2000 networks” 역할

Based on IP multicast

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3GPP2/BCMCS

Architecture Reference Model

BCMCS Controller (BCMCSC): Control Plane

BCMCS Supporting Node (BSN): User Plane

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WiMax/MBS

MBS (Multicast Broadcast Services)

WiMax Forum, Network WG

Multicast & Broadcast Services for Mobile WiMax

Based on IEEE 802.16e

Combination of DVB-H, MediaFLO, 3GPP/MBMS, ..

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DVB/DVB-H

DVB-H (DVB Forum)

Digital Video Broadcasting – Handheld

DVB: 방송사업자 중심의 포럼 (방송망)

DVB-T (Terrestrial) 기반 휴대형 단말기에 “방송” 서비스 제공

Time Slicing (휴대 단말기의 전력 소모를 최소화)

MPE-FEC (안정적인 이동수신을 위한 오류 정정 기술) 등

DVB-H 단말은 GPRS/UMTS 등의 이동통신망에도 접속

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DVB-H & IPDC

IPDC (IP DataCast) System DVB/CBMS

DVB-H 망에서 IP-based 방송 서비스 제공 시스템

서비스 탐색 및 선택

컨텐츠 재생 및 자원관리

서비스 보안 및 전자상거래

양방향 데이터 서비스

사용자 인터페이스

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Mobile IPTV 시스템/서비스관리 기술

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OMA/BCAST

OMA/BCAST 개요

OMA BAC (Browser and Contents) WG 산하의 서브그룹

방송서비스 지원을 위한 시스템 기술

다양한 방송 서비스: 방송형, 대화형, 혼합형

Any IP-based BDS (Broadcasting Distribution Systems)

DVB-H

IP

OMA-BCAST

3G MBMS BCMCS

Application

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OMA/BCAST: 시스템 구조

출처: 삼성전자발표자료(2007.5)

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OMA/BCAST: 기능 특성

출처: 삼성전자발표자료

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OMA/BCAST

Correlation with Other SDOs

출처: 삼성전자발표자료(2006.7)

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DVB-CBMS Perspective Architecture

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DVB/CBMS: 시스템 구조

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OMA/BCAST vs. DVB/CBMS

DVB-CBMS OMA-BCAST

표준기구 DVB forum Open Mobile Alliance

개요 DVB-H 상위의양방향휴대방송표준 IP기반 BDS 망에서의양방향휴대방송

표준 (現 DVB-H, MBMS, BCMCS 고려)

특징 방송기반포럼에서 표준화 이동통신기반포럼에서표준화

표준일정 2005.11월 Phase I 스펙 release

2007년 12월목표 Phase II 작업

2007.6월 BCAST 1.0 Candidate

release 예정

2007년 6월차기버전논의시작

의장사 모토롤라 삼성

상용화현황 2006년텔레콤이탈리아첫상용화 2007년노키아-삼성협력기반상용화추

진중 (베트남, 네델란드등)

출처: 삼성전자발표자료(2006.7)

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Qualcom/MediaFLO

Media FLO (Forward Link Only)

미국 퀄컴사가 제안한 독자적인 휴대 방송기술

국내 지상파 방송사들이 VHF 주파수 대역의 방송망을 그대로

사용하면서 이를 CDMA 이동 통신망과 결합

새로운 방송과 통신 융합 비즈니스 모델

T-DMB, DVB-H와 더불어 국내 휴대 방송 규격으로 고려 중

클립 캐스팅(Clipcasting)

다운로드 앤드 플레이(Download and Play) 방식

(cf) DMB: 실시간 스트리밍 방식

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Qualcom/MediaFLO

주요 구성요소

Forward Channel: 기존 방송망 (with MediaFLO) Reverse Channel: 3G 이동통신망 National Operations Center (NOC): MediaFLO의 중심 역할: 과금, 분배, 컨텐츠 관리 Local Operation Centers (LOC): NOC의 지역적 역할: 지역적인 컨텐츠 관리 FLO Transmitters: 이동단말에 컨텐츠를 전달하기 위해 FLO waveform 전송

3G Network: Reverse Channel from User to NOC

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JTC1/MMC

MMC (Mobile Multicast Communications)

ISO/IEC JTC1/SC6/WG7 (ISO/IEC 24793)

이동 멀티캐스트 “서비스/세션” 관리를 위한 “요소” 프로토콜 기술

주요 기능

데이터 전송 관리 (IP Multicast, Overlay Multicast)

세션 관리 (Session Join, Membership/QoS Monitoring)

Mobility Support (Handover Support)

MMC 표준화 현황: 다음 3개의 세부 규격으로 나뉘어 진행 중

MMC-1 (24793-1): MMC Framework

MMC-2 (24793-2): MMC Protocol over Native IP Multicast Network

MMC-3 (24793-3): MMC Protocol over Overlay Multicast Network

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JTC1/MMC

MMC-2 over IP Multicast Network

Mobile Backbone Network

PoA

MN

MCS

MN

SM

LMC

Interworking

Control Channel

LMC

Wireless Access Network Wireless Access Network

PoA

Handover

Multicast Data Transport Channel

MR MR

• 세션관리• 그룹/QoS 관리• Handover 지원

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JTC1/MMC

MMC-3 over Overlay Multicast Network

• Overlay Tree 관리• 세션관리• 그룹/QoS 관리• Handover 지원

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TTA의 Mobile IPTV 표준화요구사항

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Mobile IPTV 요구사항 (TTA)

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Mobile IPTV Requirements (TTA)

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Further Issues for Mobile IPTV

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Multicast Issues for Mobile IPTV:

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Device Capabilities for Mobile IPTV: Web-based

Smart TV on Mobile Environments

(TV + 온라인 콘텐츠 + Web Apps)

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Terminal Issues: MPEG의 AIT (Advanced IPTV Terminal) 개념도

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Mobile Service Platform 환경의 변화

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OIPF: Support for multiple Service Model

Open Internet

(e.g., Mobile Internet)

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OIPF’s High Level Architecture

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Coming IPTV Service Features

Corporat

FMC Control Space

FMC Connectivity Corporate

PAN

Personal

VAN

Vehicular

HAN

Home

CAN

Services Services

FixedWLAN LTE

3G

2.5G

• common control functions

• extensibility of control functions

• network composition

• compatibility with different

connectivity/service infrastructures

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User-Centric Opportunity for Broadband

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New Service Adoption and 3 stages of evolution

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Overlay Model for IPTV

• Distributed applications for IPTV

Virtualized server

Simple, uniform code

• User-Oriented Control functions for IPTV

• Self-organizing overlay networks

Community IPTV network

Multiple types of IPTV VPN

Personalized IPTV networking

• Broad Applicability

Consumer

Service provider

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Web기반 IPTV의 구현 모델

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Case Study: Middleware Platform for Context-awareness

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Further Innovations for Mobile IPTV

Required to evolve further innovations for Mobile IPTV: MVNO Approach

Multi-access resource management

Network composition

Network context management

Mobility-triggering framework

Media overlays

Security, naming and migration are project-wide themes

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Discussions

감사합니다.