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Transcript of IPTV Introduction
1
IPTV Product TrainingIPTV Product Training
Multimedia product support Dep.
Contents
Chapter1: Background & Definition
Chapter2 : IPTV Related Technologies
Chapter3 : IPTV Bearer Network Technology
Chapter4 : Successful Application Case
2
Chapter1:IPTV Background & Definition
1.1 Industrial Background;
1.2 What is IPTV?
1.3 IPTV services
Challenge Chance for Telecom Operators
1.1 Industrial Background
Evolution of New operation technologies
Declining Voice & Data Revenues
Convergence of Telecom, Internet, Media and Entertainment
Growing broadband network
Pipe operator or Service Provider, this is a Pipe operator or Service Provider, this is a question
3
IPTV is a Suitable Cut-in Point
1.1 Industrial Background
Broadband Service enables new service opportunities
Video Services are dominating
Broadband users desires higher QoE on video services
Network operators transfer themselves to a broadband services provider
New Revenue Streams with Minimal Investment
IPTV Promise: “Schedule-free TV, on your terms”
1.1 Industrial Background
Traditional TV
Push - Linear
Cable or Satellite
National & Regional
L ti ifi i
IPTV
Pull -On-demand
New Competitors
Personal, Social
Any content to any device Location-specific services
Time restriction
Triple-play
Traditional TV business models
TSTV and TVoD, Killer application
Enables Multiple-play
Enables new business models
4
Global IPTV Subscribers--2008-2012
1.1 Industrial Background
25
50
75
100
al IP
TV
Su
bsc
rib
ers
MR
G, I
nc.
200
8M
illi
on
s
2008 2009 2010 2011 2012
Total 24,006,800 37,363,500 52,016,700 70,891,077 92,800,066
ROW 647,500 1,171,000 1,790,000 2,769,056 3,753,915
North America 4,570,000 6,772,000 9,585,000 13,065,475 17,343,082
Europe 10,728,400 16,008,100 21,537,600 28,310,805 36,285,865
Asia 8,060,900 13,412,400 19,104,100 26,745,741 35,417,204
0
Glo
ba ©
IPTV is happening
1.1 Industrial Background
10.7 Millions
8.4 Millions
4.9 Millions
24 Million subscribers at the end of 2008
5
Evolution of China IPTV
1.1 Industrial Background
Breaking ice
2005 2006 2007 20082004 2005
Sprout Frustration Progress Turning to better
• Globally, IPTV service is evolved from experimental stage to
• Issue the first IPTV license
• IPTV commercial services are started by the most of the
• The size of China IPTV subscribers increased greatly
• After years of development, there is a large amount of IPTVexperimental stage to
commercial use stage. And at the end of the year, PCCW has 480,000 IPTV subscribers
• There are over 10 million broad band user in China and IPTV goes to experimental stage
• Commercial trial in Harbin and Shanghai
by the most of the main operators in Europe
• Only three IPTV licenses issued in China
•IPTV service was banned by regional administrations in different areas
increased greatly, over 800,000 users
• The regional administrations request that IPTV service shouldn't be banned by SARFT. And there is fast development in digital TV switching
large amount of IPTV subscribers
•The 2008 Olympic Games in Beijing provides opportunities for IPTV
•Telecom operators reformation, a new pattern formed
.
Development of China Telecom IPTV Users
1.1 Industrial Background
China Telecom is one of the most important operators of China IPTV. It
develops 1.3 million IPTV users in 2008. Affected by the mature of AVS, the
changes of high-ranking leader and the reformation of telecom
operators, China Unicom (original China Netcom) developed slowly on IPTV
service.
6
Construction of FTTx Based on EPON Guarantees Bandwidth
1.1 Industrial Background
Bandwidth China Telecom
Deployed more than 10 million EPON user ports in 2008: Most ports are FTTB and a
few portion of FTTH ports , providing 8M and 20M typical bandwidth options
In 2009, China Telecom will go further in broadband-accelerating strategy and related
constructions based on EPON
China Unicom China Unicom
In 2008, China Unicom only applies a small scale of EPON
In 2009, China Unicom starts the "Broadband-accelerating" strategy based on EPON.
In June, it purchases 11 million EPON lines totally.
Construction mode and service capability are consistent with China Telecom.
Wireless Broadband Pushes forward IPTV Service
1.1 Industrial Background
January 2009, China releases 3G license. March~June, China
Telecom, China Unicom and China Mobile Communications Corporation
start 3G commercial application. The competition for the wireless service
will become the key point between the three main operators.
Based on IPTV platform, China Telecom will provide mobile handset video
services through 3G wireless broadbandservices through 3G wireless broadband.
The three-screens-in-one (PC screen, TV screen and mobile handset
screen in one screen) service will become the most popular operation
mode among China operators.
7
Definition:
IPTV简介
1.2 IPTV Introduction
IPTV: Internet Protocol Television , is a new
service which intergrates multimedia and
communication technologies using broadband
network to provide home users with various
interactive services including digital TV;
1.2 IPTV Solution
STB + TV
IPTV简介
Contents source
IPTV system
……Transmission network :InternetTerminal:STB+TV、mobile phone、pc Access mode :ADSL、LAN、wireless、FTTHTypical service :Live TV、VOD 、TSTV、TVOD,Games …..
8
1.3 IPTV Structure
Classification of TV Services
1.3 IPTV Service
Live TV
Full Triple Play Offer
100+ Live Channels
Standard Bouquet:
63 Channels, 5 HD
30 i TSTV
24/24 VoD Films
TV program
Pay per view
Subscription VoD
HD content
48 h TVOD30 mins TSTV 48 hours TVOD
9
Categories of IPTV License
1.3 IPTV Service
IPTV nationwide license
Shanghai Media Group (SMG)
China Central Television International (CCTV)
Southern Media Corporation (SMC)
China Radio International (CRI)
IPTV i l li IPTV regional license
Zhejiang Radio and Television Group (ZRTG)--within Zhejiang province only
IPTV industry license
Huaxia Network (education contents are allowed to be broadcasted on TV
set terminals)
Operation Status of License Holders
1.3 IPTV Service
Shanghai Media Group (SMG) Shanghai Media Group (SMG) The first commercial application case: Harbin Netcom The largest commercial application case: Shanghai Telecom Service region: Jiangsu, Zhejiang, Fujian, Guangdong, Hainan, Hubei, Liaoning,
etc.
China Central Television International (CCTV) Rich of channel content resources: solely owned resources CCTV3/5/6/8 not
shared to other license holders To the end of 2008, no great improvement on IPTV service trials Cooperated with Jiangsu Telecom, Inner Mongolia Netcom, Beijing Netcom and
Jilin Netcom while no improvement due to the factors of policy and internal causes
Southern Media Corporation (SMC) Stress the cooperation with broadcasters on the interactive TV service; No
progress on IPTV service
China Radio International (CRI) Make a trial on IPTV service with the cooperation of Hunan Telecom
10
Chapter2 IPTV Related Technologies
2.1 Digital TV Technology
2.2 IPTV Video Encoding/Decoding Technology;
2.3 IPTV Streaming Media Technology ;
2.4 IPTV CDN/VDN Technology;
IPTV ArchitectureIPTV Architecture
2.1 Digital TV Technology
DTV source
DTV Technology
Encoder
Headend
Service Operation PlatformCDN central node
IP Networks
CA\DRM
CDN edge nodeCDN edge node
Access network Access networkSTB
STB
STB
CDN edge node
11
Digital TV Technology
2.1 Digital TV Technology
Definition
Digital Television (DTV) technology is a new generation television technology that
adopts digital encoding and transporting technologies for the collecting, recording,
broadcasting, transmitting and receiving of the TV programs. It includes three parts:
information source (transmitting end), information channel (transporting/storing) and
information destination (receiving end).
DTV Categories
According to the bit rate of the moving picture, DTV is categorized into Standard
Definition Television (SDTV) and High Definition Television (HDTV). SDTV and HDTV will
coexist for quite a long period to satisfy different customer’s demands.
DTV's advantages
2.1 Digital TV Technology
Compared with analog TV, DTV has following advantages:
High-resolution TV image: comparable with DVD (lowest: 1280x720,
highest: 1920x1080)
High quality acoustics
Rich of programs high usage rate of wired network Rich of programs, high usage rate of wired network
High anti-interference ability, stable image
Extended functions: surfing Internet, VOD, querying stock
information, online trade, distant learning, etc.
12
What is “Standard Definition”?
2.1 Digital TV Technology
SDTV
Standard Definition Television
Resolution and aspect ratio format are similar to analog TV
Aspect ratio 4:3 with resolution of 480i or 480p
Analog TV
PAL: 625 lines 25 frames/s
NTSC: 525 lines 30 frames/s
Full D1
PAL:720x576(Phase Alternating Line )
NTSC:720x480 (National Television Standards Committee )
What is “High Definition”?
2.1 Digital TV Technology
HDTV
High Definition Television
Watching the image details from the distance which is three times the image
height, the quality of the picture is comparable with the actual objects.
1080i/720p or above
1080i:1080i:
1080 line interlaced
1920x1080 (aspect-ratio 16:9)
720p:
720 line progressive
1280x720 (aspect-ration 16:9)
13
Digital TV Formats
2.1 Digital TV Technology
Form VerticalHorizont
lAspec
SRefresh
Tat
IndexResoluti
on
alResolutio
n
pt
Ratio
ScanType
Rate [Hz]
Type
1
480
640 4:3
interlaced
30
2progressi
ve
24
EDTV
3 30
4 60
5
704 4:3
interlaced
30
6progressi
ve
24
7 30
8 60
9interlace
d30
SDTV
704 16:910
progressive
24
11 30
12 60
13
720 1280 16:9progressi
ve
24
HDTV
14 30
15 60
16
1080 1920 16:9
interlaced
30
17 progressive
24
18 30
High Definition
Bandwidth of High-definition Video
2.1 Digital TV Technology
High-definition video source
1920x1080i/1080p
1280x720p
Bandwidth Bandwidth
MPEG2:12~20Mbps
MPEG4 or WMV9:8~12Mbps
H.264:7~8Mbps
14
Sub-conclusion
2.1 Digital TV Technology
DTV includes: SDTV, HDTV
SDTV: 480i, 480P
HDTV: 720P, 1080i, 1080P
2.2 IPTV Video Encoding/Decoding Technology
IPTV相关技术
First generation of First generation of SecondSecond--generation generation
Evolution of Video Encoding/Decoding Standards
H.264 /MPEG-4 AVC
ggstandardsstandards
ggstandardstandard
MPEG-China AVS中国
15
2.2 IPTV Video Encoding/Decoding Technology
IPTV相关技术
Video Encoding/Decoding Standards
MPEG-2: Popularly used internationally
MPEG-4: Popularly used domestically
WMV9: Internationally
H.264: Mainstream of the future
AVS: China Standard
Video Encoding/Decoding Technology
2.2 IPTV Video Encoding/Decoding Technology
Intent of H.264/MPEG-4 AVC: providing good video quality at
substantially lower bit rates than previous standards
Initially, used for the transport of the multimedia data on the Internet,
then for the wireless area, the video encoding standard of MPEG-4/AVC
has already be adopted by 3GPP and 3GPP2. And meanwhile, the mp4
audio format (ACC) of MPEG-4 becomes the standard for mobile
streaming mediastreaming media.
MPEG-4-LA is the organization in charge of the patent fee of MPEG-4. It
charges 1 million USD dollars per year from each independent operating
carrier.
16
H.264
2.2 IPTV Video Encoding/Decoding Technology
H.264 is the newest international codec standard developed by ITU-T and ISO/IEC. Without decreasing the picture quality, it halves the bit rate of previous codec standard.
Three advantages of H.264: Compression ratio and picture quality
Due to the improvements on traditional frame prediction and coding algorithm, H.264 achieves a higher coding efficiency and better picture quality than previous standards.
Anti packet loss and bit error H.264 improves the anti packet loss and bit error performance.
China Standard AVS
2.2 IPTV Video Encoding/Decoding Technology
AVS is a proprietary intellectual property of China. Its coding efficiency is 2~3
times higher than MPEG-2, equivalent to H.264. In addition, AVS is based on a
concise technology design, and the realization complexity of chips is lower than
that of H.264.
H.264 is only a video codec standard. While AVS is a complete standard set
including system, video, audio, and copyright management, which can provide
comprehensive solutions for digital video & audio industry comprehensive solutions for digital video & audio industry.
Disadvantages for AVS:
MPEG-4 and H.264 are mature standards that have been commercially
applied on a large scale of international market and domestic IPTV industry.
Therefore, it is very important to increase the industrialization speed of AVS.
17
2.2 IPTV Video Encoding/Decoding Technology
H.264 Compared with other standards, saved ratio of bit rate
6
Conclusion:
With the same picture quality, the compression ratio of H.264 is 2~3 times higher than that of MPEG-2 in DVD system and 1.5~2 times higher than that of MPEG-4
The advanced compression performance of H.264 is achieved from the high calculation complexity which improves the prediction accuracy greatly.
Sub-conclusion
2.2 IPTV Video Encoding/Decoding Technology
Currently, H.264/MEPG AVC is the best encoding/decoding
method
For HDTV Which mode hasFor HDTV, Which mode has best picture quality?
1080i or 1080p?
18
Streaming Media Technology
2.3 Streaming Media Technology
At the narrow band time, due to slow Internet speed, video files have to be
downloaded to local before playing. It not only wastes time and disk space, but
also cannot meet the demand of play continuity.
Based on this demand, streaming media appears. It solves the play continuity
problem by simultaneously downloading, buffering and playing the video file.
FileDownload: File
Streaming media: Frame 1Frame 2Frame 3Frame 4Frame 5
2.3 Streaming Media Technology
IPTV主要技术
Transport Protocols of Streaming Media
RTP : Real Time Transport Protocol
RTCP:Real Time Control Protocol
RSVP : Resource ReSerVation Protocol
RTSP : Real Time Streaming Protocol
UDP: User Datagram Protocol
19
RTP/RTCP
2.3 Streaming Media Technology
RTP is a transport protocol of multimedia data flow used for
Internet/Intranet
RTP is used for the one-to-one or one-to-many transport,
providing time information and synchronization of media
streams.
Generally, RTP adopts UDP to transport data, especially for
wireless environment.
RTP can be applied on TCP or ATM protocol as well.
RTP/RTCP
2.3 Streaming Media Technology
RTCP together with RTP provides traffic control and congestion
control services.
RTP cooperating with RTCP optimizes the transport efficiency
based on effective feedbacks and minimized expenses, which is
it bl f l ti d t t t I t tsuitable for real-time data transport on Internet.
RTP does not guarantee the sequencing delivery of packets, neither
does it provide traffic and congestion control. However, RTCP does.
20
RSVP
2.3 Streaming Media Technology
Compared with traditional data transport, the transport of
streaming media data is much more sensitive to latency.
Therefore, guaranteed bandwidth is not enough for the transport
of high quality audio & video data.
RSVP is designed to reserve resources across network.
RSVP can reserve a fraction of network resources (bandwidth) to
provide QoS for the transport of streaming media.
RTSP
2.3 Streaming Media Technology
RTSP was introduced by Real Networks and Netscape together. It
defines how to effectively transport media data for one-to-many
application. RTSP adopts TCP or RTP to complete data transport.
Compared with HTTP, RTSP is suitable for the transport of
multimedia data while HTTP is suitable for the transport of HTML multimedia data, while HTTP is suitable for the transport of HTML
text. In addition, HTTP is a uni-direction service (The client machine
sends the HTTP request and the server responses the request).
While RTSP is a bi-directional service, both the client machine and
server can send the request.
21
Sub-conclusion
2.3 Streaming Media Technology
Streaming media technology is different from file
download technology.
Streaming media technology is used to continuously
deliver frames of video over IP network, so that end-
user can enjoy the video continuously without waiting
and hard disk occupying.
Basic protocol: RTP/RTCP, RVSP, RTSP
2.4: IPTV CDN/VDN Technology
VDN(Video Delivery Network ) is constructed by hierarchical streaming
IPTV主要技术
server deployment on the basis of present broadband network. This
network provides users with high- quality media services. The actual
structure can be either central-fringe hierarchical structure or distributed
structure. Central-fringe hierarchal structure resolves the contradiction
between centralized programs storage and distributed nearby services
providing. The computer cluster mode resolves the problem of economical
expansion of single mode service capabilityexpansion of single mode service capability,
22
IPTV CDN/VDN Technology
CDN Software Architecture
ZTE CDN Subsystem
CDN Manager
Networkmanagement
Content control Service control
SOMPVoD serverMSTU
EMS
CMS
CDN Agent
SMS
System management
Router process
Version management
Operation maintenance
MSTU
MDU
Read/write/record/distribute
media servicesLike TSTV and NPVR
Living broadcast servicesuch as live TV, live relay, NVOD
STB STB
Node management
Content control
Service control
Streaming ServerInterface adapter
CDN M
Central Node
IPTV CDN/VDN Technology
ZTE CDN could be Two-level Structureor Multi-Level Structure.
ZTE CDN consists of CDN Manager Agent
CDN Networking
Agent
VOD Server
VOD Server
VOD Server
Storage
Agent
VOD Server
VOD Server
VOD Server
Storage
Manager
Agent
VOD Server
VOD Server
VOD Server
Storage
Region Node
ZTE CDN consists of CDN Manager, Agent, VoD server etc.
The CDN Manager is locatedin the CDN central node or alone, which is responsiblefor network management, global content control,and global service control.
CDN ManagerAgent
The CDN Agent is located inthe CDN node, which is responsible for node management, node content control, node service control, and streaming interface adaptation.
VoD Server
VOD servers in each node can be added dynamically to meet the gradually increasing parallel VOD requirements. VOD server stores and reads contents, sends video streams
Region Node
fringe Node
Agent
VOD Server
VOD Server
VOD Server
Storage
Agent
VOD Server
VOD Server
VOD Server
Storage
Agent
VOD Server
VOD Server
VOD Server
Storage
,and responds to the VCR requests in the VOD process, and at the same time is responsible for media services such as time-shifted TV, TVoD and NPVR.
VOD server for Living broadcast service such as live TV, live relay, NVOD.
VOD servers in the same VOD cluster can share the storage.
23
IPTV CDN/VDN Technology
CDN Functions
1 Device management: manages the storage space, service bandwidth, and service g g g p , ,
capability of devices in CDN.
2 Node management: node composed of agnet, media storage and media server
3 VCDN management: divides operator owned CDN resources into virtual resouces.
4 service management: mananges contents, channel, live broadcasting ,recood
broadcasting,relay;
5 Contents control;
6 Service control;
7 Program playing schedule;
8 capability statistics;
IPTV CDN/VDN Technology
Three CDN Networking
1 single central node structure 1 single-central node structure
The central nodes strore programs;
The edge node directly provides service to users;
The edge node obtains programs via program
distribution and Cache mechanism.
24
IPTV CDN/VDN Technology
Three CDN Networking
2 multi central node structure 2 multi-central node structure
The central nodes strore programs;
The edge node directly provides service to users;
The edge node obtains programs via program
distribution and Cache mechanism.
Each central node distribute program to other
central nodes;
IPTV CDN/VDN Technology
Three CDN Networking
3 netted structure 3 netted structure
The central nodes strore programs;
The edge node directly provides service to users;
The edge node distributes programs to other edge
nodes and each edge nodes acts as the caches of
other edge nodes.
25
ServiceBasic Middleware Platform
BOSSCentral Node
Ed N dVS8000C
CDN Hardware Architecture
Service processing
server (CDN
Manager)
Interface server
Statistic&CDR server
Web serverEPG server
Disk Array
VS8000C
MSCU=AgentVoD (MSTU/MDU) SOMP
Edge NodeVS8000C
MSCU=AgentVoD (MSTU/MDU) SOMP
Disk Array
Firewall
IP network
Features VCDN (Virtual content delivery
network) designed for
VSP2 VSP3VSP1 …
SMS SMS SMS
SP
VCDN Solution
) g
multi service operators
Uniform platform, virtual
operation space for virtual SPs
VSPs have complete SMS, CMS
function
Content could be shared between
VSPs
Personalized EPG for each VSP
SMS
CMS
EPG
SMS
CMS
EPG
SMS
CMS
EPG …
Content
Content
CDN 1
Content
Content
CDN 2
Content
Content
CDN 3
…CDN Personalized EPG for each VSP
…Content Content Content
…
User group 1 User group 2 User group 3
26
CDN Mechanism
CDN Key technologies
Content ScheduleContent Scheduling Mechanism Facing Operators
Dual-directional Symmetrical
CDN RedundancyRedundancy among nodes
Redundancy in one nodeRedundancy in storage
Content Distribution
VCDNZTE CDNSubsystem
yScheduling Mechanism
between CDN Nodes
Redundancy in storage
Load BalancingGlobal Load Balancing
Local Load Balancing
Live relay
CDN Mechanism
CDN Key technologies
1 Content distribution: include PUSH, PULL,Mirror;
PUSH h f d t th i d ith th PUSH: push program from one node to another in accordance with the
pre-defined distribution rules, this can not completed manually;
PULL: in case of the node A cannot meet VOD request of a user, the
program can be distributed from node B in time and provided to uer in
real-time, meanwhile the program can be also buffered to node A.
Mirror: stands for implements the synchronization between streaming Mirror: stands for implements the synchronization between streaming
servers by configuring mirror relationship between source streaming
server and destination streaming server.
27
IPTV CDN/VDN Technology
CDN Key technologies 2 Content Schedule Technology
Opeartor-oriented program content schedule mechanism;
Inter-CDN nodes bidirectional equivalent scheduling mechanism;
3 Load Balancing Technology
Global load balancing mechanism: the system allocates each user Vod
request to most suitable Agent for processing;
Serve VOD requests in a “own users’ requests first, then other
requests” manner; if the streaming server in which the ordered stream is located or the
network connection fails, the system will automatically recode the failure point and reconduct
streaming server load balancing and switch progressing ordered stream to new streaming
server,the process is transparent to users;
IPTV CDN/VDN Technology
CDN Key technologies
4 Video transmission technology
CDN possesses unique live broadcasting relay and transmit function,
Either adopt pure unicasting or multicating for video live broadcasting
incurs certain problems.
High-performance computing technique
The multithread technique greatly improves CPU effciency and greatly reduced the
dependence of high-concurrent flow on server hardware and achieves high
pergormance-price ratio by properly configure server hard mamory and peripheral.
28
Content distribution modePush
CDN Mechanism---- Content Distribution
Content Library
FTP
Push PushBackbone
CDN Manager
Agent
VOD Server
VOD Server
VOD Server
Storage
Central Node
Note: The blue arrows in this map
PUSH distribution means that the system can push the program from the upper layernode to the lower layer node according to preset distribution rules. This process can also be completed manually.
Backbone
Agent
VOD Server
VOD Server
VOD Server
Storage
Regional Node
Agent
VOD Server
VOD Server
VOD Server
Storage
Regional Node
is signaling flow.The red arrows in this map is media flow.
CDN Manager
Agent
Distribution on demand policy
Distribute relevant contents according to the purchasing situation of operators or
according to operators'
Timed distribution policyPreset plans to conduct timed distribution.
Automatic distribution policy Automatically gather statistics of the content and distribute according to the popularity of the content
Content Schedule
g
VOD Server
VOD Server
VOD Server
Storage
Agent
VOD Server
VOD Server
VOD Server
Agent
VOD Server
VOD Server
VOD Server
Central Node
according to operators application for program contents.
the content.
Classification distribution policy According to different contents, set different distribution intervals and destination.
Hierarchical distribution policy Set different distribution intervals and destinationaccording to different hierarchies of contents.
Program purchasing and distribution policyO t h
StorageStorageRegional Node
Edge Node
Operators can purchase programs;the program suppliers can make update and distribution policies according to the purchasing situation. Priority policy of content distribution
Different operators have different distribution priorities.
Note: The red arrows in this map is media flow.
AgentVOD Server
VOD Server
VOD ServerStorage
AgentVOD Server
VOD Server
VOD ServerStorage
AgentVOD Server
VOD Server
VOD ServerStorage
AgentVOD Server
VOD Server
VOD ServerStorage
AgentVOD Server
VOD Server
VOD ServerStorage
29
CDN Manager
Agent
Global Load BalancingMechanism
•Adjacent rulesS b ib l
Redirection
Agent
VOD Server
VOD Server
VOD Server
Storage
Agent
VOD Server
VOD Server
VOD Server
Agent
VOD Server
VOD Server
VOD Server
Central Node
G
•Subscribers group rules•Sequential service priority•Local service priority
Local Load BalancingMechanism
•Content storage location•Concurrent stream traffic•Concurrent connection•Server processing capacity
Storage Storage
Agent
VOD Server
VOD Server
VOD ServerStorage
Agent
VOD Server
VOD Server
VOD ServerStorage
Agent
VOD Server
VOD Server
VOD ServerStorage
Agent
VOD Server
VOD Server
VOD ServerStorage
Agent
VOD Server
VOD Server
VOD ServerStorage
Regional Node
Edge NodeSTB
×
Note1:Breaking point memory in VoD service
×
Note 2: The blue arrows in this mapis signaling flow.The red arrows in this map Is media flow.
×
×
CDN Manager
Agent
Convergence
Agent
VOD Server
VOD Server
VOD Server
Storage
Agent
VOD Server
VOD Server
VOD Server
Agent
VOD Server
VOD Server
VOD Server
Central Node
Note 1: The blue arrows in this mapis signaling flow
Storage Storage
Agent
VOD Server
VOD Server
VOD ServerStorage
Agent
VOD Server
VOD Server
VOD ServerStorage
Agent
VOD Server
VOD Server
VOD ServerStorage
Agent
VOD Server
VOD Server
VOD ServerStorage
Agent
VOD Server
VOD Server
VOD ServerStorage
Regional Node
Edge NodeSTB
is signaling flow.The red arrows in this map Is media flow.
××
×
30
TCP
Live Relay
Live relay and forwarding functionSupport live relay and forwarding mode such as multicast, unicast, multicast and unicast combined.
Content making work station
Central server
TCP Unicast
UnicastUnicast
Unicast Unicast
Edge servers
Edge servers
Multicast MulticastAdvantages • Helping the carriers without multicast
on network transmit Live TV to end subscribers.
• Saving the bandwidth.
CDN Highlight
Push Content distribution mode
High-performanceprocessing capability
Global load balancing mechanism
Carrier-class reliability
Convenient VCDN operating
Live relay and forwarding function
Powerful network management
Seamless scalability
31
Chapter3 IPTV Bearer Network Technology
The bearer network consists of access router, BRAS,DSLAM
and MODEM. ALL of these devices cooperate to transmit
IPTV service stream from media service network to user
terminals, For VOD services, the broadband access network
provides only user access control and data transmission
channel and ensures IPTV VOD service Qoschannel and ensures IPTV VOD service Qos.
IPTV Bearer Network Technology
VOD program and TV program are the two most important VOD program and TV program are the two most important
contents for the IPTV bearer network. To reach a comparable
quality of the IPTV program with the cable TV program, the IPTV
bearer network must provide guarantee at bandwidth, channel
switching delay and network QoS.
Bandwidth Bandwidth
MPEG4: 1.2~1.5M per stream
H.264: 1M per stream
At least 2M per user
32
IPTV Bearer Network Technology
Channel switching delay
The channel switching time of the cable TV is very short. IPTV
service should minimize the end-to-end delay as much as
possible. According to survey of IPTV users, the acceptable
channel switching delay is 1 second and VOD switching time is
10 second.
QoS
Packet loss and jitter will seriously affect the quality of IPTV
program. Therefore, it is very important to guarantee the network
QoS for IPTV service.
IPTV Bearer Network Technology
Multicast
Multicast is a technique for one-to-many communication
over an IP infrastructure. The host sends only one copy of
the data flow, while the one or multiple recipients receives
the duplication of the data flow sent by the host. The
advantage of multicast is saving network bandwidth and
server resources. Only one data flow is sent above the
multicast duplication point. Thus, the bandwidth above the
duplication point is saved greatly.
33
IPTV Bearer Network Technology
IPTV Bearer Network Technology (Multicast)
Multicast network structure
Server
Packet (sent once)
User
User Broadcast TV vs VOD
Multicast vs Unicast
UserUser
Multicast vs Unicast
IPTV Bearer Network Technology
Static Multicast VS Dynamic Multicast
For static multicast, the multicast distribution tree (MDT) is established
statically. The multicast stream is transported along the MDT no matter
there are users to receive it.
For dynamic multicast, the MDT is established according to the IGMP
request from users, based on the multicast routing protocol.
Static multicast has less delay than that of dynamic multicast. It is
it bl f IPTV suitable for IPTV.
Multicast Management
Controllable management on multicast data received by users
Management of multicast source
Management of multicast distribution range
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IPTV Bearer Network Technology
Multicast QoS
Multicast is based on UDP Hence there is no re-transport mechanism for Multicast is based on UDP. Hence, there is no re transport mechanism for
lost packets.
The upgrading of the routers in the backbone network and MAN increases
the Qos capability, which guarantees the QoS of the multicast services.
To guarantee the QoS of multicast services, generally, the abroad carriers
separate IPTV services from normal PC Internet services. Thus, multicast
QoS is guaranteed by establishing a dedicated channel for multicast
stream.
Multicast duplication point
To save bandwidth, the duplication point should be placed near to the end
users. For ADSL, the duplication point can be placed at BAS or DSLAM.
IPTV Bearer Network Technology
Sub-conclusion
Basic requirement for IP bearer network is:
Enough bandwidth
Supporting multicast
Better QoS guarantee
Security
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4.6 Application of unicast & multicast
Case1:The whole network multicast
Live multicast
Switch 1 Switch 2
VOD unicast
IPTV组网情况及涉及技术
Central Node
Region node1区Region node2
Bearer Network
Live unicast
Edge node1
Edge node 2
STBUnicast domain
STB
4.6 组播与单播技术应用
Case2: the whole network unicast
C t l d
S 1 S 2
单播/组播直播源Live source
IPTV组网情况及涉及技术
Broadcast Relay Central node
Region node1Region node 2
Bearer network
unicast
Exception
Edge node1
Edge node2
STB
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4.6 组播与单播技术应用
Case3:Trunk unicast \ multicast in edge
Central node
S 1 S 2
单播/组播直播源
Unicast/multicast source
IPTV组网情况及涉及技术
Central node
区域中心1区域中心2
Bearer network
source
Broadcast relay unicast
Vod unicast
Live multicast
Broadcast relay exception
Live unicast
Edge node1
Edge node2
STB
Multicast domain 1 Multicast domain 2
STB
Vod exception
Unicast domainSTB
Chapter4 : Successful Application Case
中兴IPTV商用案例
4.1 Shanghai Telecom IPTV Success Factors
4.2 jiangsu Telecom IPTV
37
Shanghai, Shanghai Telecom Introduction
Shanghai-------Largest city and economic center of China
China Telecom is the world’s largest wireline telecommunications and broadbandservices provider, with about 210 million fixed line subscribers and over 40 millionp ,broadband subscribers.
Shanghai Telecom is a subsidiary of china Telecom, contains about 3 million broadbandusers.
Launched in Sep.2006. Total 150 million IPTV subscribers (Jan 2011)
Shanghai IPTV Eco System
Head-End
Middleware
DSLAM
SetTop-Box
38
Live TV Channels
CCTV 15
Shanghai TV&Eastern TV 12
Digital TV 20
Other 9
Several NVOD Channels
VOD
Theatrical (8%)Domestic (4%)Sony (11%)
Korean (2%)
Movie
Domestic (52%)
European & American (42%)
HK&TW (33%)
Teleplay
2008
Hot show (45%) Other (55%)
2008Japanese&Korean (18%)
Domestic (52%)HK&TW (30%)
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HDTV
17/05/2008 Shanghai Telecom launches HDTV service and
developed 8000 users at the end of the year.
Live TV 2 Channels
VOD 100Hours, update 20hours/month
Launched IPTV Services in Shanghai
Tele-votingKaraokeGaming
TV Shopping
Web portalsTV yellow Pages
StockWeather
Government Online
Key Focus:Video service
QoERevenue opportunity
VOD (PPV)TVOD (3 Days)
NVOD
Government OnlineTV-Bank
Remote Education
Live TV (108 ChannelTSTV (60 Min.)
Olympic Game Column
Video Phone/ConferenceUnified Message
Hotel IPTVHotel IPTVGlobal Monitoring
ZTE STB
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Market research for service
Data from Shanghai Media Group - SMG
Key message from investigation:
TSTV & TVOD is the killer application, 75% user want to buy IPTV because of it. Young family will be easy to accept IPTV which seek for more personalized TV & high quality service. There is big gap between man and woman, normally man is not sensitive about price, but content as sports and news.
g p
IPTV Enables Premium $Content$
39%38%40%
收视比例传统电视 IPTV的节目Traditional TV IPTV
Percentage of Viewers
7%
25%
16%14%
8% 8% 8% 10%10%
20%
30%
Data from Shanghai Media Group - SMG
2%4%
2%5%
2%0.02% 0.36%1%
8%
0 0.10%0%
10%
电视剧 电影 少儿 娱乐 纪实 财经 体育 法治 游戏 新闻
Comparison of Traditional TV and IPTV Viewers
Sitcom Movie Kids Entertainment Social Financial Law Sport Game News
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IPTV Value-Added $Service$
Example: Dance Competition 2006
Voting rate of IPTV viewers (with remote controller)
was 25 times as high as that of cable TV viewers (using
SMS to vote)
Same viewing period:
100 000 i 000 %100,000 IPTV viewers: 5,000 votes 5%
20,000,000 CATV viewers: 40,000 votes 0.2%
Data from Shanghai Media Group - SMG
Revenue Sharing with CP and SP
SMG Shanghai Telecom
SP
•IPTV service provider provides network infrastructure, service provision, and hosts all value-added services;
• Content provider converts video formats and manages all video contents (including media sharing part)
Data from Shanghai Media Group - SMG
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IPTV Charge Strategy of Shanghai Telecom
Phase III
Phase II
Phase I
2007, IPTV binding with broadband: Users focus on broadband.
2008, sales-promotion on IPTV charge: charge free for over 8 times usage within a month together with
2009, monthly payment pre-paid: cultivate a good payment habit ,it is nearly one million IPTV users
Although the number of IPTV users increases fast, the usage ratio of IPTV STBs is very low.
month, together with VOD and TSTV ,achieve quite positive reputation from IPTV users.
IPTV Sales Promotions of Shanghai Telecom
2008IPTV Enjoy
Increase the usage ratio of subscribed IPTV users
Shanghai Telecom’s Shanghai Telecom’s Sales Promotions Sales Promotions
For IPTVFor IPTVExtend the preference to 2009 for users expired in 2008
Through 2008
2009IPTV Newlife
2009IPTV Care
Provide preference on IPTV services for its broadband users
Provide preference on IPTV services for its broadband users
2008IPTV Newlife1/Feb~30/Jun
IPTV Care1/Feb~30/Jun
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2008 IPTV Enjoy
area Service1M
Internet(RMB)
2MInternet(RMB)
Notes
downtown
58 Channels60min TSTV
48hourTVODVOD
27 221,Be free for first 2 months2,Use 8 times, off 22RMB/month/line
suburb
58 Channels60min TSTV
48hourTVODVOD
32 271,Be free for first 2 months2,Use 8 times, off 22RMB/month/line
2009 IPTV Newlife
Package ServiceCharge per Month
(RMB)
Base Package
58 Channels60min TSTV
48hour TVOD 30ase ac age 48hour TVOD30 special channels
VOD
Optional Package Children's Playground 5
Optional Package Documentary 5
Optional Package First Run 10
Totel Package All above 40
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2009 IPTV Care
Package ServiceCharge per Month
(RMB)
Base Package
58 Channels60min TSTV
48hour TVOD 15Base Package 48hour TVOD30 special channels
VOD
15
Optional Package Children's Playground 5
Optional Package Documentary 5
Optional Package First Run 10
Totel Package All above 25
Shanghai Telecom's IPTV and Broadband UsersPenetration Rate
IPTV Penetration Rate2008.9
19%
2008.3
2008.5
2008.7
19%
8%
Broadband user IPTV user
2008.1 8%
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Relationship of Shanghai Telecom and SMG
User
Shanghai Telecom
SMG
CP/SP of non-Video VAS
CP/SP of Video VAS
CP/SP of Video Service
STB Provider
Content Service Access Service STB Order
Responsibility Division and Income Distribution-1
Service
SMG provides and examines the video&audio contents;
Shanghai Telecom provides value-added services.
If the value-added service includes video&audio contents, it should be approved by
SMG.
Advertisement
Shanghai Telecom takes charge of IPTV marketing and print media advertisement; S a g a e eco ta es c a ge o a et g a d p t ed a ad e t se e t;
SMG takes charge of the advertisement on television, radio and other medias.
Investment and Maintenance
SMG takes charge of the investment on source content and content management
platform;
Shanghai Telecom takes charge of the IPTV key platform, bearer network and access
t k B id th l tf f h Sh h i T l t k h f th
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Responsibility Division and Income Distribution-2
Before September 1, 2008
Investment on User terminal devices:
50% each for the purchase of STB
Income distribution:
Shanghai Telecom:SMG=35%:65%
Shanghai Telecom pays 14 RMB/Mo./User to SMG in the "IPTV
Enjoy" promotion in 2008Enjoy" promotion in 2008
After September 1, 2008
Investment on User terminal devices:
Shanghai Telecom purchases all STBs
Income distribution:
Broadband Penetration
Large broadband user base: 3 million
Marketing Promotion
Annual pay (only pay for 10 months- 2
Shanghai Telecom IPTV Success Factors
Large broadband user base: 3 million
subscribers with high loyalty
Sufficient bandwidth: up to 4Mbps on
average
p y ( y p y
months free)
Discount when bundling with E-Home
services
Free STB for two-years contract
Success Factors
Content Variety and Appeal
Win-win partnership with SMG on content acquisition
Compelling and competitive content to attract users
Different contents including TV programs from Hong Kong, new release movies
Convenience with TSTV & TVOD: watch TV at any time
Value-added services increases the profit
47
Jiangsu & Jiangsu Telecom Introduction
Jiangsu is a province of the People's Republic of China, locatedalong the east coast of the country.
Rank in China Administrative Population Comparable country
(Population) DivisionPopulation Comparable country
— China 1,301,531,000
5 Jiangsu 76,245,000 Egyptu
Rank in China
(GDP)
Administrative
Division in million RMB in million US$
— China 20,940,700
3 2,556,010 335,964Jiangsu Telecom, a subsidiary of publicly-listed ChinaTelecom, the largest fixed-line telecom operator in China,has become a major player in broadband services, servingmore than 3.3 million broadband subscribers
Project Profile
I 2006 j t t d l dIn 2006, project covers most developed cities in Jiangsu province ,and it has about
100,000 subscribers
In the first half of 2007, the project was expanded to cover 13 cities of the province
Nov, 2005 ZTE beats UTStarcom, Alcatel and Bell
ZTE is a sole provider
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Jiangsu IPTV Eco System
Head-End
Middleware
DSLAM
SetTop-Box
Launched IPTV Services in Jiangsu
VAS
KaraokeInformation
B
System Functions
Multiple CP/SP Access
Customized EPG
Video & Audio
Services
Live TVVOD Browser
Tele-votingGame Hall
Online/Offline Game
Video SurveillanceVCS Live
Advertisement Insertion
… …
Customized EPGVCDN
Live Relay Group User
FunctionRe-operationChannels Mix
Integration with hotel’s system
Hotel’s Solution
VODTSTVTVODNPVRNVOD
ITVVirtual
Channels
… …Self-care Service…
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