NGOD交互VOD架构概况.ppt

1、Next Generation On Demand (NGOD),Overall Architecture (2009-06),Page 2,Agenda,NGOD Architecture NGOD Basic Architecture NGOD Start Over Architecture NGOD Content Delivery Network (CDN) Architecture NGOD Technology WEB Technology CDN Technology NGOD Status and Progress,Page 3,NGOD Architecture NGOD B

2、asic Architecture NGOD Start Over Architecture NGOD Content Delivery Network (CDN) Architecture,Page 4,NGOD 2.0 Basic Architecture,Page 5,NGOD 2.0 Basic Architecture,Asset Interfaces: A1 to A7, define asset management interfaces Session Interfaces: S1 to S6, define session management interfaces Reso

3、urce Interfaces: R1 to R6, define resource management interfaces Entitlement Interfaces: E1 to E2, define entitlement management interfaces Stream Control Interface: C1, define stream control interfaces Client Auto-Discovery Interface: D1, define client auto-discovery interfaces Video Transport Inte

4、rfaces: V1 to V4, define video transport formats from streaming server to edge Network Management Interfaces: N, define network management interfaces Data Warehousing Interfaces: W, define reporting interfaces with Data Warehouse. Logging Interfaces: L, define event logging interfaces with Logging S

5、erver. Service Discovery Interfaces: D, define service and resource discovery between various on demand components in the head end (not shown in the reference architecture diagram, to be described in Section 6).,NGOD VOD, Aug 2007,Page 7,NGOD VOD Ingest Sequence,Page 8,Asset State Transition Diagram

6、,Page 9,NGOD Session Management,One Session Manager Four Resource Managers Edge Resource Manager (Phase 1) Network Resource Manager Encryption Resource Manager On Demand Resource Manager (Phase 1) Resource Allocation Models optimistic resource allocation model (mandatory) pessimistic resource alloca

7、tion model (optional) SRM Architecture Hub & Spoke Architecture (mandatory) Threaded Architecture and Signaling Flow (informative),Page 10,NGOD Session Management,Optimistic Resource Allocation with Hub & Spoke Signaling,Page 11,NGOD Session Management,Pessimistic Resource Allocation using ordered H

8、ub & Spoke Signaling,Page 12,NGOD Session Management,Threaded Signaling for Pessimistic Resource Allocation,Page 13,NGOD Session Sequence,Page 14,NGOD Architecture NGOD Basic Architecture NGOD Start Over Architecture NGOD Content Delivery Network (CDN) Architecture,Page 15,NGOD Start Over Architectu

9、re,Page 16,NGOD Start Over Architecture,Page 17,NGOD Start Over Architecture,Page 18,NGOD Start Over Ingest Sequence,All other Asset ingest, propagation and session setup, control flow and interfaces are still valid,Page 19,NGOD Architecture NGOD Basic Architecture NGOD Start Over Architecture NGOD

10、Content Delivery Network (CDN) Architecture,Page 20,NGOD CDN Architecture,Page 21,NGOD CDN Architecture,Page 22,NGOD CDN Architecture,Page 23,NGOD CDN Content Ingest and Streaming,All other Asset ingest, propagation and session setup, control flow and interfaces are still valid,Page 24,NGOD Technolo

11、gy WEB Technology CDN Technology,Page 25,NGOD WEB Technology,Service & Content Discovery and Advertise (Application) HTTP XML Session Signaling RTSP HTTP Resource Management Protocol RTSP Packet Cable Multimedia (PCMM) Content Locate & Transfer Protocol HTTP Stream Control Protocol RTSP HTTP,Page 26

12、,NGOD CDN Technology,Content Traditional Cable VOD Content Real Time recorded content Internet sourced content (web sites) Personal video content Portable Device video content Delivery and Propagation Replace Traditional Satellite Content Delivery system Replace Traditional Propagation and Distribut

13、ion Virtualized Streaming Server with Ingest, Storage, and Streaming functions separated Next Generation Content Management System Multiple screens (TV, PC, Mobile) Metadata normalization and localization, multiple lifecycle Workflow Management,Page 27,NGOD Status and Progress,Page 28,Jan 2006, NGOD

14、 2.0 Spec Oct 2007, Basic VOD SeaChange + Motorola, Concurrent, SeaChange Tandberg + Cisco April 2008, Start Over SeaChange + Motorola and SeaChange Dec 2008, Basic VOD SeaChange + Cisco Tandberg + SeaChange Dec 2008, Convergent-CDN phase 1a Cisco + Cisco June 2009, Convergent-CDN phase 1b (Infinity

15、) Cisco + SeaChange Dec 2009, Convergent-CDN Phase2 (Infinity) SeaChange + Cisco,Page 29,29,Questions,SeaChange is a registered trademark of SeaChange International, Inc. All other marks are the property of their respective owners. While every effort is made to ensure the information given is accurate, SeaChan