KRnet 2007 BcN/NGN /NGN-based IPTV/VoD VoD Services ETRI 2007. 6. 28 조기성 chokis@etri.re.kr
목차 I I II II III III IV IV VV 개요 IPTV 관련표준화현황 IPTV 서비스 IPTV 구조및요구사항 Discussion 2
I I II II III III IV IV VV 개요 IPTV 관련표준화현황 IPTV 서비스 IPTV 구조및요구사항 Discussion 3
Trends of Network and Service Timeline of Technologies Industry Development Service Devices Component Network Converged Services among - Digital broadcasting (DTV, DMB) - Digital contents - Home networking - Intelligent robots - Telematics -RFID Next Generation Mobile Telecom (4G, HPi) Next Generation PC Wired Telephone Voice Network (modem) Analogue Era Mobile Telecom (CDMA) Computer Semiconductor Broadband Telecom Network (ATM, xdsl) Digital Era Display Non-memory Semicon (IT-SoC) Display Broadband convergence Network (BcN) Digital Convergence Era Paradigm Changes 4
Trend of Telecom Services Fixed line usage is reducing dramatically for classical services Mobile usage is increasing steadily even tho ugh penetration is already high Broadband Internet deployment shows a rapi d growth Usage Mobile Fixed Broadband Years 5
현재의 TV 6
IPTV 7
IPTV 서비스의정의 ITU-T IPTV is defined as multimedia services such as television/video/audio/text/graphics/data delivered over IP based networks managed to provide the required level of QoS/QoE, security, interactivity and reliability (2006.7.) ATIS IPTV Exploratory Group(IEG) IPTV is defined as the secure and reliable delivery to subscribers of entertainment video and related services. These services may include, for example, Live TV, Video On Demand (VOD) and Interactive TV (itv). These services are delivered across an access agnostic, packet switched network that employs the IP protocol to transport the audio, video and control signals. In contrast to video over the public Internet, with IPTV deployments, network security and performance are tightly managed to ensure a superior entertainment experience, resulting in a compelling business environment for content providers, advertisers and customers alike 8
IPTV 개념 광고 방송 VoD TV 극장 술집 음반도서 사용자비디오실시간비디오 컨텐트유통인프라 컨텐트전달인프라 PC 영화콘서트 핸드폰 인터넷방송 컨텐트패키징 9
IPTV 서비스망요소구성 IPTV Headend Contents, Codec, IP Streaming DRM/CAS, Middleware, Management Backbone Network Multicast Streaming + QoS Access Network Switched Channel + QoS per Subscriber Subscriber Premise IP-STB(Decoder, Middleware, IGMP) IRD IRD Encoder Encoder Streaming Server Billing Subscriber Management EPG Middleware Business Local Server IP Adaptor CAS/DRM Main Headend LAN xdsl FES FTTH DSLAM OLT L3/L2 Edge L3/L2 Edge L3/L2 Edge L2/L3 Multicast Routing: PIM-SM)/IGMP MM Streaming: UDP/RTP QoS: MPLS+DiffServ Residential BcN-Access BcN-Edge (Aggregation/ Distribution) IP-STB/IPTV BcN Core (IP/MPLS) 10
현재 IPTV 서비스제공방식및문제점 상호운용성취약비표준플랫폼 : 다양한 Client Headend 망은서비스세션인식못함 (Unmanaged Service) Customized QoS 제어제한 융합 / 부가서비스제한 망사업자수익모델취약 Service-dependent architecture CapEx/Opex 증가 Service Blending 제한 조기서비스도입에유리 Middleware+IGMP OK Decoder+B uffer IRD IRD Encoder Encoder Media Server IP Adaptor Billing Subscriber Management EPG Middleware CAS/DRM IPTV Service Network Main Headend 11
향후의 IPTV 서비스제공방식 Managed QoE/QoS and Security Infra-structure for Service Blending Advanced Service (Mobile IPTV, Personalized TV) Heterogeneous Service Environment (Terminal, Access, Content, Preference ) Efficient Delivery Control Unified Signaling CapEx/OpEx Scalability, Performance, Compatibility Middleware+IGMP OK Decoder+ Buffer Network based control IPTV Service Network IRD IRD Billing Subscriber Encoder Encoder Management EPG Media Server IP Adaptor Middleware CAS/DRM Main Headend 12
I I II II III III IV IV VV 개요 IPTV 관련표준화현황 IPTV 서비스 IPTV 구조및요구사항 Discussion 13
Structure of ITU-T SGs: Vertical direction Other Telecom aspects (SG13) Mobile aspects (SG19) Overall Architecture Cable aspects (SG9) SG2+SG16 Service (User) Service (Server) Service (User)? QoS/QoE/NP (SG12 + SG13) Traffic/NNAR (SG2) Control (SG11) Middleware Transport Home Access Core Access Home FTTx, xdsl, Cable, Satellite, WLAN, WiMax, DMB etc. Charging/ Accounting (SG3) OAM/Manag. (SG4) Security (SG17) SG9 (Cable), SG15 (Transport), SG19 (mobile), other SODs 14
2. Configuration of IP-TV Standards IP-TV Services Additional Services Service Control/AAA Service/User Profile Security IPR Program Program Consumer Program Program Program Service Program Provider Program Program Program Program Media Processing Codec Control Common Platform Platform Underline TP (Broadcasting) Platform IP Underline TP (Fixed/Wireless) Platform Underline TP (Mobile) QoS/NP Broadcasting/ Multicasting/ Unicasting etc. Traffic control Security Transport Capability (Broadband etc.) 15
Introduction 표준화단체구성 ITU-T SG13 산하 Focus Group 으로 2006 년 7 월부터활동개시 총 6 개의 WG 으로구성 WG1 WG2 WG3 WG4 WG5 WG6 표준화진행상황 Architecture and Requirements QoS and Performance Aspects Service Security and Contents Protection Aspects IPTV Network Control End Systems and Interoperability aspects Middleware, Application and Content Platforms 현재까지총네차례 (2006 년 7 월, 10 월, 및 2007 년 1 월, 5 월 ) 회의진행 4 월 SG13 회의에서 IPTV FG 의 Work Plan 승인 2007 년 12 월까지, 총 7 차회의개최 2008 년 1 월, 서울에서개최되는 SG13 회의에 FG IPTV 에서작업된문서제출 16
4th meeting 5th meeting Milestones and timeline for FG IPTV May 2007 July 2007 July Sep 2007 Full Focus Group meeting to progress Output Documents and agree this work plan with the Focus Group (done) Last meeting for the acceptance of new material into Service Requirements and Architecture documents Review period for Service Requirements and Architecture documents September NGN-GSI reviews deliverables and transfers final 2007 comments to the Focus Group Final review and approval of Service Requirements and 6th Architecture documents October 2007 meeting Last meeting at which new material will be accepted for all other documents Review period for remaining documents. Requirements Oct Dec 2007 and Architecture team to work on Gap analysis Final review and approval of all documents 7th December meeting 2007 Final report and documents submitted to SG13 for review and approval January 2008 SG13 reviews final report, allocates deliverables for ongoing work within SG13 and other study groups according to IPTV-JCA plan 17
ATIS 의연구현황 엔터테인먼트비디오및이와관련된서비스를안전하고신뢰성있게가입자에게전달규격간조정, 장애이슈들의해결, 서비스및망간연동의활성화 Framework/Architecture IPTV Architecture Requirements(06.6.) 3 단계로드맵 IPTV Architecture Roadmap Phase Phase 1 Phase Phase 2 Phase Phase 3 기본서비스에대한기본 Spec. 트랜잭션기반서비스에대한규격 네트워크및서비스에대한기본접속 VoD, PPV 서비스의발견및네비게이션 양방향 TV, 멀티플레이어게임 네트워크기반의 PVR 댁내환경및 P2P 응용 1 단계 Architecture Reference Model Service/DRM/QoS(QoE)/System 규격규격연구 18
I I II II III III IV IV VV 개요 IPTV 관련표준화현황 IPTV 서비스 IPTV 구조및요구사항 Discussion 19
IPTV 서비스분류 대분류 소분류 서비스예 채널기반컨텐트서비스 다채널방송, 트릭모드, Time-shift TV, PVR/NPVR, PPV, 멀티앵글 컨텐트서비스 On-Demand 컨텐트서비스 CoD, Near CoD, Push CoD 컨텐트 / 서비스탐색서비스 EPG, ECG, TV Portal 양방향데이터서비스 전자상거래, 게임, 노래방, 뉴스, 날씨, 교통정보, 전자정부, E-learning 데이터통신서비스 인터넷접속, 포털, E-mail, 메신저 통신서비스 음성통신서비스 VoIP, 발신자표시, SMS 20
실시간정보 Source : AIRCODE 사 21
프로그램 + 광고 Source : AIRCODE 사 22
멀티카메라 Source : AIRCODE 사 23
양방향광고 Source : AIRCODE 사 24
EPG Source : AIRCODE 사 25
VoD/DVR Source : Microsoft 26
TV 에서의통신 E-mail SMS Caller ID Messenger Source : Microsoft 27
CommunityTV(AmigoTV) ETRI Proprietary KRnet 2007 Source : Alcatel 28
방송, 통신, IPTV 서비스의특성비교 구분 방송서비스 IPTV 서비스 통신서비스 주목적 컨텐트소비 컨텐트검색 / 판매 / 저장 / 가공컨텐트기반통신 (Community TV) 컨텐트생성형통신 ( 원격강의 ) 실시간상호작용 / 데이터전달 전달대상및 한정된수의채널불특정다수 1:N 소수를위한방송 ( 동호회채널 ) 인터넷방송채널 실시간웹캠채널 무제한적대상선택적소수 1:1, 1:N, N:N 방식 지역적제한 세계적방송 지역방송위치기반서비스 지역무관 일반적 개인화방송실시간시청자참여 개인적 비실시간 실시간웹캠채널 실시간 정보의특성 공시성 Time Shift TV 동시성 단방향양방향 TV 양방향 사용자와생산자불일치 UCC 사용자가생산자 개인방송국 정보의구성 사업자의편성 / 사전계획 개인별채널 / 프로그램구성 On Demand 서비스실시간사용자참여 사용자선택 29
IPTV 서비스의특성 Multimedia Service Digital Interactive Managed Service QoE/QoS Reliability Network Security AAA, Privacy, Network Protection Content Security CAS, DRM Controllable IP Network and Platform Converged Service Web Service, Multimedia Service, Telephony Service 30
발전단계별 IPTV 서비스의변화 구분 도입단계 성숙단계 고도화단계 특징 기술적문제해결서비스개념의실현 기존서비스의대체 / 보완 서비스의활성화기존서비스와차별성 고유의신규서비스창출 제공컨텐트 일반사용자대상의기존방송및상업컨텐트 UCC 개인방송사내방송 / 영화배급 세계적컨텐트연동 플랫폼 유선망기반의 TV/ 셋톱이동단말 /PC 홈네트워크연동 서비스 다채널방송 /VoD 양방향데이터서비스 NPVR, Time-Shift TV 웹서비스연동통신서비스연동 개인화서비스융합서비스 중심융합 사업자융합망융합번들 / 결합서비스 단말융합통합서비스 서비스융합 수익모델 정액사용료송출수수료컨텐트사용료 광고부가서비스사용료 개인화광고상거래수수료개인화 / 융합서비스사용료 주된기술적문제점 품질 (QoE/QoS) 보장상호호환성확보서비스제어기술망간연동 컨텐트유통구조확립서비스연동및결합 사용자인터페이스보안 / 프라이버시컨텐트 / 사용자정보가공 31
I I II II III III IV IV VV 개요 IPTV 관련표준화현황 IPTV 서비스 IPTV 구조및요구사항 Discussion 32
IPTV Functional Architecture Framework Application End-User Content Delivery Service Control Management Content Provider Network Transport 33
FG IPTV Architecture Overview 3 가지구조 Non-NGN-based Legacy 네트워크 (Best-effort IP Network) NGN-based and IMS-based IMS 를도입하여 SIP 응용서비스제공중인사업자가 IPTV 서비스까지 IMS 기반으로. NGN-based and non-ims-based Managed Infra 를갖추고있으며, IMS 를도입하였거나, 혹은그렇지않은상태에서 IPTV 서비스를. IMS 이외의별도의 IPTV Control 을이용 Service Control IMS-based Non-IMS IMS-based Transport/Network Control NGN-based (Managed QoS and Security) Non-NGN NGN-based 34
구조 1: Non-NGN based Content location Content Distribution Content Delivery Customer Application Components 콘텐츠선택, 구매, 콘텐츠보호등 망 / 시스템자원의설정및유지제어 to support the delivery of the media streams Application Client Media Client Control Client IPTV Device Customer Transport Network Gateway Transaction Protocol Delivery Protocol Multicast Control Control Protocol Authentication & Configuration Protocol Access Network IPTV Application 콘텐츠소스로부터단말까지의미디어전달 Delivery Broadcast & VoD 콘텐츠소스로부터단말까지의미디어전달을위한시스템 / 망자원의제어 / 관리 Network Attachment Authentication & Control IP Allocation (NACF) [T-user Profile] Edge IPTV Control Resource & Resource Admission Control Control (RACF) Core Transport IPTV Subscriber Management Service Components User Profile Control Network Transport - 사용자멀티미디어세션제어 - Session Level QoS Control - 서비스사용 Security 제어 - Media Delivery Control - IPTV 서비스상태정보수집및관리 ( 사용자, 단말, 콘텐츠등 ) - Service Usage 정보수집 - Media Stream e2e connectivity btw FE Session Mng & control Session Mng & control Using IMS Session Mng & control Using non-ims 35
NGN Non-IMS IPTV Architecture End-User Application Management Content Provider Application Profile Function Application OSS / BSS Application Clients Transaction Protocol IPTV Applications Metadata Content Preparation Content & Metadata Content & Data Sources IPTV Terminal Content Delivery Content Delivery Control Service Support Content Delivery OSS / BSS Media Client Delivery Protocols Content Delivery & Storage Function NGN Service Stratum Service Control OSS / BSS User Profile Control Client Control Protocol IPTV Service Control Function Service Control Home Network Delivery Network Gateway Function Authentication & Configuration Protocol Access Network Network Attachment Control (NACF) [T-user Profile ] Edge Resource & Admission Control (RACF) Core Transport Control NGN Transport Stratum Transport Transport OSS / BSS 36
NGN IMS IPTV Architecture End-User Application Management Content Provider Application Profile Function Application OSS / BSS Application Clients Transaction Protocol IPTV Applications Metadata Content Preparation Content & Metadata Content & Data Sources IPTV Terminal Content Delivery Content Delivery Control Service Support Content Delivery OSS / BSS Media Client Delivery Protocols Content Delivery & Storage Function NGN Service Stratum Service Control OSS / BSS Session Client Session Protocol Core IMS Service User Profile User Profile function Service Control Home Network Delivery Network Gateway Function Authentication & Configuration Protocol Access Network Network Attachment Control (NACF) [T-user Profile ] Edge Resource & Admission Control (RACF) Core Transport Control NGN Transport Stratum Transport Transport OSS / BSS 37
Detailed Architecture - AFs Application Clients Service Selection Client Program Guide Client On-Demand Client Other Clients Transaction Protocol IPTV Applications Service Selection Application Program Guide Application On-Demand Application Other Applications Application Metadata Service Provisioning Application Profile Function Content Management Content Transcoding Files Streams IPTV Subscriber Management Linear TV Metadata On-Demand Metadata Content Aggregation Content Provider IPG Data Source MetaData Sources Content Sources Management Application Management DRM Client Transaction Protocol DRM Server Key management Keys Content Encryption Digital Rights DRM Rights Source Authorisation & Authentication Content Preparation IPTV Terminal Content Content Delivery Control Service Support Media Client Delivery Protocol Delivery Control Protocol Content Delivery & Storage Function NGN Service Stratum Control Client Control Protocol IPTV Service Control Function User Profile Content Delivery Service Control 38
Detailed Architecture - CDFs Application Application Clients Transaction Protocol IPTV Applications Metadata Content Preparation Files Streams IPTV Terminal Content Delivery Unicast Delivery Control Function Service Support Unicast Content Client Function Multicast Content Client Function Control Client Unicast Delivery Control Protocol Delivery Protocol Delivery Protocol Control Protocol Unicast Unicast Delivery Delivery & Storage Storage Multicast Delivery Control Function Multicast Multicast Delivery Delivery NGN Service Stratum Service Control IPTV Service Control Function User Profile Unicast Path Multicast Delivery Control Protocol Multicast Path Home Network Authentication & Configuration Protocol Network Attachment Control (NACF) [T-user Profile] Resource & Admission Control (RACF) Control NGN Transport Stratum Delivery Network Gateway Function End-User Access Network Multicast Control Point Unicast Transport Multicast Replication Transport 39
TISPAN High-level NGN IPTV NGN Application NGN Applications User Data Media Mgnt Charging Tr Customer Facing IPTV Applications SD&S IPTV Applications IPTV Subscriber Management UE IPTV Service Control and Delivery Rp Ct2 Ct Dl IPTV control Ct3 Media delivery control Ct Media delivery CA and Encryption Media Acquisition and Distribution User Data Consumer Transport e2 NASS Gq RACS NGN Transport Delivery Network Gateway Access Network Edge Core Transport Edge and Core Transport 40
TISPAN IMS IPTV Xa SISF IPTV Service Control CoD-SCF IPTV Media Control CoD-MCF Ut Sh BC-SCF PVR-SCF BC-MCF PVR-MCF UPSF Cx ISC y2 IPTV Media UE Gm Core IMS IPTV Media Delivery CoD-MDF e2 Gq' BC-MDF NASS e4 RACS PVR-MDF Xc' Transport Processing Xc'' 41
ATIS Functional Decomposition 42
ATIS NGN based IPTV 43
ATIS IPTV Network 44
I I II II III III IV IV VV 개요 IPTV 관련표준화현황 IPTV 서비스 IPTV 구조및요구사항 Discussion 45
현재 IPTV 망구조 어떻게전달하고전달과정을제어할것인가? 전달경로제어 / 관리중심 프로토콜스택 / 시그널링방식 QoS/QoE 제어 / 관리방식 세션설정및관리단일서비스망관점중심사용자가어떻게서비스를소비할것인가? 서비스발견및선택컨텐트메타데이터형식사용자프로파일관리 AAA 코덱 / 미들웨어컨텐트보호 46
고려되지않은문제들 자원의제어와관리컨텐트서버 / 서비스서버자원의관리 컨텐트의배치 / 분배관리 (CDN) 부하관리컨텐트식별 / 프로파일관리서비스프로파일관리서비스사용자프로파일과전달망사용자프로파일의관계전달망특성에따른적응적품질보장이동성무선망지원 (Mobile IPTV) 연동 IPTV 망간 / 사업자간연동기존 IPTV 서비스망과의연동 / 진화기존인터넷컨텐트서비스연동서비스융합컨텐트 / 서비스브로커링서비스간의연계 / 동기화방안 컨텐트 - 통신, 컨텐트 - 컨텐트연계서비스 웹서비스수용개인화 /Context-Aware 서비스 47
감사합니다. 48