LEE CHI HO 130007394 HUNG WING SHAN 13007017 MAK LAI YAN 13007378 NGAN CHING IN 13001477 TSANG WING...
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ISEM 3410Telecommunications and Networking LEE CHI HO 130007394 HUNG WING SHAN 13007017 MAK LAI YAN 13007378 NGAN CHING IN 13001477 TSANG WING SHAN 13007386 TSE MAN HON 13007408 WONG SZE CHING 13006274 WONG LIK SHUN 13001574 TANG MEI LING 13007025 Group 3 Mobile TV in HK 1
LEE CHI HO 130007394 HUNG WING SHAN 13007017 MAK LAI YAN 13007378 NGAN CHING IN 13001477 TSANG WING SHAN 13007386 TSE MAN HON 13007408 WONG SZE CHING 13006274
LEE CHI HO 130007394 HUNG WING SHAN 13007017 MAK LAI YAN
13007378 NGAN CHING IN 13001477 TSANG WING SHAN 13007386 TSE MAN
HON 13007408 WONG SZE CHING 13006274 WONG LIK SHUN 13001574 TANG
MEI LING 13007025 Group 3 Mobile TV in HK 1
Slide 2
Agenda Definition History and Trends Broadcast standards 1.
CMMB 2. DTMB 3. DVB-H 4. T-DMB Regulations Frameworks Pros and cons
2
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Slide 4
Mobile TV Definition:The broadcast of a Live TV on a smartphone
or other handheld digital device(e.g.Tablet) The Narrow sense:
Broadcast the Live TV through airwave/over-the-air only Generalized
sense: Broadcast the Live TV through Mobile network / Internet It
includes pay TV services and free-to-air via terrestrial television
stations. E.g. UTV HKTV 4
Slide 5
Video download apps, stream TV from the Web browsers in mobile
devices are not included in Mobile TV E.g. YoutubeNow Player Video
have been already savedThe program can be watched in traditional TV
already 5
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Slide 7
History of mobile TV Original plan: use of Digital Terrestrial
Multimedia Broadcasting (DTMB) transmission technology Banned by
OFCA (Office of the communications authority) HKTV needs a separate
domestic TV program license to offer commercial mobile TV Change to
launch over-the-top (OTT) video services Distributed via Xiaomi
set-top boxes, online & mobile platforms Oct 2014 Hong Kong
Television Network (HKTV) Launched mobile TV service "UTV"
Cross-network: integrates cellular, internet & broadcasting
companies to supply content, regardless of the users mobile
provider Multi-platform: users can watch programs through Android
smartphones, iPhone, tablets, computer & TV boxes The mobile TV
licence acquired by HKTV on Dec 2013 Dec 2013 China Mobile Hon g
Kong (CMHK) CSL One2Free Launches Hong Kong's First "3G Mobile TV"
Offering non-stop 9 infotainment programmes on 3G mobile phones
Charged on time consumption & no pre-registration is required
Feb 2006 CSL One2Free 7
Slide 8
Trends in Hong Kong Steady growth of Smartphone penetration
rate Steady growth of watching video and TV programme Worldwide
trends Rapidly going mobile & broadband Worldwide mobile TV
users reached 200M by year 2012 & CAGR is 36% By 2017, 2
billion mobile & tablet users will watch TV & video on
their devices (Juniper Research ) 8
Slide 9
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Slide 11
CMMB The China Mobile Multimedia Broadcasting China Industry
Standard developed by SARFT Based on the Satellite and Terrestrial
Interactive Multi- service Infrastructure (STiMi) Performs one of
the mobile TV standards with capability in supporting portable and
mobile digital TV services in Hong Kong SAR 11
Slide 12
Usage and Characteristic Supports hybrid satellite and
terrestrial signal frequency network Specifies usage of the S-band/
U-band Supports mobile phone, PDA, MP3, MP4, digital camera,
notebook and small terminal in car, train, ships, and plane to
receive multimedia service 12 Characteristics Bandwidth 2 Options
1.8MHz for 4K sub-carriers 2.2MHz for 1K sub-carriers Multi-carrier
CP-OFDM Fixed sub-carrier width Fixed CP length (ratio)
Slide 13
Service Structure 13
Slide 14
System Structure 14
Slide 15
Strength and weakness 15 High mobility user of handheld device
Strength Lower-definition of 320i Support QCIF (176 144) &
QVGA(320x240) Poor indoor reception Inadequate network coverage and
signal attenuation strong urban buildings Weakness
Slide 16
Application in Hong Kong UTV, Launched by China Mobile Based on
the China Mobile Multimedia Broadcasting (CMMB) technology platform
Accessible to all Hong Kong cellular users regardless of their
mobile network provider Owners of portable media players using CMMB
software can also access the TV service Hong Kongs telecoms
regulator OFTA(now OFCA) allocated the 678MHz686MHz band for
licensed broadcast mobile TV 16
Slide 17
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Slide 18
DTMB Digital Television Terrestrial Multimedia Broadcasting is
the TV standard for mobile and fixed terminals used in the PRC,
Hong Kong, and Macau is a merger of the standards ADTB-T, DMB-T and
TiMi was created in 2004 and finally became an official DTT
standard in 2006 DTMB in Hong Kong formal adoption as a DTT
standard in 2006 analogue to digital switchover in 2007 (TVB and
ATV) analogue switchoff in 2015 18
Slide 19
DTMB HKTV's proposal to use DTMB for HKTV's mobile television
service was rejected by the Communications Authority due to laws
that govern traditional and new media by different standards
Characteristics Bandwidth Channel bandwidth can be modulated into
1.5MHz Bit-rate from 4.813 Mbit/s to 32.486 Mbit/s Signal frequency
470-806 MHz 19
Slide 20
DTMB Usage Traditional: Internal Broadcasting TV signal Fixed
site: home TV New Trend: External Mobile devices Built-in receiver:
Korean mobile phone External receiver: Hong Kong mobile phone,
which is a latest technology 20
Slide 21
DTMB Service Besides the basic functions of traditional
television service, the DTMB allows additional services using the
new television broadcasting system. DTMB system is compatible with
fixed reception (indoor and outdoor) and mobile digital terrestrial
television Mobile reception: is compatible with digital
broadcasting TV in standard definition (SD), digital audio
broadcasting, multimedia broadcasting and data broadcasting service
Fixed reception: in addition to the previous services, also
supports high definition digital broadcasting (HDTV) 21
Slide 22
Service Structure of DTMB 22
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Slide 25
Finally the signal is modulated to put it in the corresponding
frequency band The data block and the TPS information are
multiplexed, and pass through the data processor to form the body
structure. It combines information from the body and the head to
form the frame and this is passed through the SRRC (Square Root
Raised Cosine) filter to become a signal within an 8 MHz channel
bandwidth The data passes through the encoder, the error protection
process FEC (Forward Error Correction), through the constellation
mapping process and then the interleaving processes the information
to create the data blocks The transmission system makes the
conversion of the input signal to the output data of terrestrial TV
signal 25 System Structure
Slide 26
Strength and weakness High video quality at fixed locations
max. 1080i Stable broadcasting foreign country Korea and Germany
successfully broadcasted the World Cup by using DTMB Flexibility of
services Strength A receiver is needed Not suitable on mobile phone
or tabs Not stable broadcasting (in HK) Immature skills Signal is
blocked by tunnel, tall buildings, etc. Weakness 26
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Slide 28
DVB Digital Video Broadcasting A suite of internationally
accepted open standards for digital television DVB standards are
maintained by the DVB Project 28
Slide 29
DVB-H Digital Video Broadcasting - Handheld Published as a
formal standard (EN 203 204) by ETSI in November 2004 Physical
layer specification designed to enable the efficient delivery of
IP-encapsulated data over terrestrial networks Variant of the DVB-T
("Terrestrial) standard was defined for non-mobile devices 29
Slide 30
Usage and characteristics Technical specification for the
transmission of digital TV to handheld receivers (i.e. mobile
telephones and PDAs) Characteristics Bandwidth Variable 5,6,7,8MHz
for all possible number of sub-carriers (8K,4K,2K) Multi-carrier
CP-OFDM Variable sub-carrier width Variable CP length (ratio)
30
Slide 31
DVB-H Network structure Sharing a network with DVB-T by
multiplexing 31
Slide 32
DVB-H System Structure A conceptual description of using a
DVB-H system (sharing a MUX with MPEG-2 services) 32
Slide 33
DVB-H technical trial in HK Six-month DVB-H trial Ran from
September 2006 to March 2007 within HKs Quarry Bay district A joint
agreement of Motorola Inc. and PCCW-HKT Telephone Ltd using
Motorolas end-to end Mobile TV system Enabled the evaluation of
operational performance and the technical capabilities of the
system in Hong Kong 33
Slide 34
Strength & Weakness High video quality Resolution: Up to
1080i Very spectrum efficient when compared with the traditional
TV-services Strength External receiver needed for users If
simultaneous operation is required, the frequencies below about
700750 MHz are favored Weakness 34
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Slide 36
T-DMB Digital Multimedia Broadcasting (DMB) For terrestrial
transmissions on band III (VHF) and L (UHF) frequencies Allow audio
and data transmitted to mobile device Based on the Eureka 147
Digital Audio Broadcast or DAB system The form of transmission is
Orthogonal Frequency Division Multiplex (OFDM) High data capacity
and suitability for applications Developed by South Korea 36
Slide 37
T-DMB T-DMB = Terrestrial-DMB Provide various data service with
300Km/h speed for 24 hours a day Characteristics Bandwidth Fixed
Nominal 2MHz for all possible number of sub-carriers Multi-carrier
CP-OFDM Flexible sub-carrier width Fixed CP ratio, variable CP
length 37
Slide 38
T-DMB Usage Expanded concept from DAB (Digital Audio
Broadcasting) 38
Slide 39
T-DMB Service Audio service Stereo with CD quality Video
service Video: SD quality (7 LCD) Audio: Stereo (FM quality) Data:
Text & Graphic Data service Traffic, Navigation, Headline news,
Stocks, etc 39
Slide 40
Service Structure 40
Slide 41
System Structure 41
Slide 42
Strength & Weakness Used without much modification for
mobile video applications Simply increase the level of error
correction Stable service in mobile, portable and fixed reception
Cheap service charges Less transmitters for T-DMB service and SFN
installation Cheap receiver charges T-DMB receiver structure is
simple Strength 42 Retransmitting data unnecessarily for
reliability Weakness
Slide 43
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Slide 44
Regulatory Issues of Broadcast-type Mobile Television Service
(Mobile TV Service) Approach Separate regulations for TV content
and broadcasting network infrastructure Broadcasting Ordinance (BO)
Governs content regulations of TV broadcasting services in Hong
Kong Telecommunications Ordinance (TO) Covers the establishment,
maintenance and operation of telecommunications networks in Hong
Kong Include infrastructure for conveyance of TV broadcasting
services Focus on Broadcasting Ordinance (BO) 44
Slide 45
Licensing and Regulatory Requirements under the Broadcasting
Ordinance (BO) (1) According to the BO: If a person provides
free/pay television programme service which is intended or
available for reception by an audience of more than 5,000 specified
premises (any domestic premises, or hotel room, in Hong Kong), the
person must take steps to obtain a domestic free television
programme service (FTV) licence or domestic pay television
programme service (PTV) licence If a person is unable to ensure
that his/her television service is not available for reception by
an audience of more than 5,000 specified premises, the person must
take steps to obtain a FTV/PTV licence under the BO 45
Slide 46
Licensing and Regulatory Requirements under the BO (2) For the
television programme services regulated under the BO, licensees
shall comply with the relevant legislations and regulations
(including the requirements in relation to the control and
management of the licensees, prohibition on anti-competitive
conduct, prohibition on abuse of dominance, etc.), the terms and
conditions of their licences as well as the codes of practice
issued by the Communication Authority (CA) concerning the
programme, advertising and technical standards 46
Slide 47
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Slide 48
Framework of development of broadcast type mobile TV (A)
Spectrum Availability One frequency multiplex of 8MHz in UHF
Band
Slide 49
Framework of development of broadcast type mobile TV (B)
Spectrum Allocation Transmission capacity: 75%: provide mobile TV
services 25%: other services (e.g. datacasting) Mandatory % of
transmission capacity for mobile TV: Should be review by OFTA
within five years by successful bidder
Slide 50
Framework of development of broadcast type mobile TV (C)
Spectrum Assignment auction with a pre-qualification process
Included utilization fee Bidder should propose obligation (e.g.
development plan)
Slide 51
Framework of development of broadcast type mobile TV (D)
Licensing Arrangements Operator is required to obtain a unified
carrier licence IF rent out to other TV service provider is
required to obtain - services-based operator licence - other
permitted telecommunications services to the public
Slide 52
Framework of development of broadcast type mobile TV (D)
Licensing Arrangements Content (for both local broadcast-type or
streaming-type): is regulated by general laws Self regulation: Is
required to develop codes of practice
Slide 53
Framework of development of broadcast type mobile TV (E) Access
to Hilltop Broadcasting Sites Share existing hilltop broadcasting
site facilities IF mutual agreement cannot be reached TA could
intervene and adjudicate
Slide 54
Framework of development of broadcast type mobile TV (F)
Geographical Coverage able to set up transmitting stations Provide
coverage for 50% of the population within 18 months NOT necessary
to cover in tunnels (e.g. mass transit railway) negotiable
Slide 55
Framework of development of broadcast type mobile TV (G)
Technical Standards a market-led technology-neutral approach by
leaving the market to select
Slide 56
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Slide 57
Pros 1. Easy to use Users do a few steps that they go to the
website or download the apps and click the program which you want.
2. Convenient Users can watch TV programs when they are free. Even
different location and different time, users also can enjoy the TV
programs. 3. Low cost Users do not have to pay money to watch TV
program. It is low cost for them. 4. Potential customers Potential
customers may want to promote their products or service, which can
promote through the TV program.playing the video of advertisement
before users watch the TV program. 5. High quality of TV program
Competition of mobile TV ( TVB vs HKTV ), improve the quality of TV
program in order to attract more customer and keep the reputation.
6. Diversification Users can watch programs and shopping on the
website or apps. 57
Slide 58
Cons 1. Not stable to watch TV programs Sometimes, mobile
receive the signal is not well, which is not smooth to watch TV
programs. 2. Use the data to watch TV programs High Data usage if
users watch the TV program. They may not willing to watch it. 3.
Needs of information technology resource high demand of I.T. staff
and technical skills. Especially, when the server was down, they
have to repair at once. 4. Risk of security Virus or hackers 5.
Distribution because of the advertisement Users have to watch the
video of advertisement and cannot skip it before watching TV
programs 58
