Download - Video Telephone in 3g
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LOGO
VIDEO TELEPHONE IN 3G
Teacher: Trng Thu HngStudents: Group 2
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MAIN CONTENT
Technology overview
Call flow example
3G Video Telephony deployments
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Technology overview
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Technology overview
Motivation
Protocol
Channels
QoS
Introduce
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Technology overview Introduce
ABOUT 3G
3G the Third Generation technology of 3GPP.
It support:
- high speed data service packet- multimedia service
- connect to internet
- Video Streaming, video conference
- email
- navigational map
- etc
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Technology overview Introduce
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Technology overview Introduce
What is video
telephony?
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Technology overview Introduce
Videotelephony comprises the technologies for
the reception and transmission of audio-video
signals by users at different locations, for
communication between people in real-time.
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Technology overview Introduce
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Technology overview Motivation
Videotelephony in the 21st century, as imagined in1910
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Technology overview Motivation
The world's first public video telephone service
was developed by Dr. Georg Schubert.
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Technology overview Motivation
Nowadays, the widest deployment of video
telephony now occurs in mobile phone.
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Technology overview Motivation
As nearly all mobile phones supporting UMTS
networks can work as videophones using their
internal cameras, and are able to make video
calls wirelessly to other UMTS users in the same
country or internationally
As of the second quarter of 2007, there are over
131 million UMTS users on 134 networks in 59
countries.
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ProtocolTechnology overview
Videoconferencing in the late 20th century was
limited to the H.323 protocol
Another protocol used by videophones is H.324,
which mixes call setup and video compression.
3G video telephony is possible using the 3G-
324M protocol over a circuit-switched
connection.
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ProtocolTechnology overview
3G-324M overview
3G-324M is based on the ITU H.324 standard
and is designed to send several differentchannels over low bit rate networks.
The 3G-324M point-to-point protocol is usually
used to open single audio and video channels
between two handsets. This limits the features
and capabilities of mobile video telephony.
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ProtocolTechnology overview
3G-324M is composed of the following sub-protocols:
ITU-T H.245 for call control
ITU-T H.223 for bit streams to data packets
multiplexer/demultiplexer
ITU-T H.223 Annex A and B for error handling of
low and medium BER detection, correction and
concealment
ITU-T H.324 with Annexes A and C for operating
in wireless environment
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ProtocolTechnology overview
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ProtocolTechnology overview
The 3G-324M specification using the Circuit switched
network allows delay sensitive conversational
multimedia services such as:
Videoconferencing for personal and business use
Multimedia entertainment services
Telemedicine
Surveillance
Live Video Broadcasting Cable TV On-the-Go
Video-on-demand (movies, news clips)
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Technology overview Channels
There are 4 channel in 3G-324:
Control channel
Video channel
Audio channel
Data channel
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Control channel
Audio channel
Video channel
Data channel
Technology overview Channels
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Control channel
It pass control commands and indications to
remote counterparts.
Terminal-to-modem control conforms to [ITU-
T V.250]
Terminal-to-terminal control is according to
[ITU-T H.245]
Technology overview Channels
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Audio channel
It use for tranfer audio signal
All ITU-T H.324 terminals offering audio
communication shall support both the high
and low rates of the ITU-T G.723.1 audio
codec. ITU-T G.723.1 receivers shall be
capable of accepting silence frames
Technology overview Channels
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Video channel
It use for traffer video signal
All ITU-T H.324 terminals offering videocommunication shall support both the ITU-T
H.263 and ITU-T H.261 video codecs
There are five standardized image formats:
16CIF, 4CIF, CIF, QCIF and SQCIF
Technology overview Channels
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Data Channal
All data channels are optional. Standardized
options for data applications include: ITU
TT.120,ITU-TT.84,ITU-TT.434,ITU-
TH.224,ITU-TT.30 ,ITU-TT.140;
Technology overview Channels
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Technology overview QoS
What is Quality of Service?
Quality of Service carries different
connotations for different people
It is the end users who pay for the service,
and whose perspectives matter most. From
an endusers
perspective, QoS defines thecharacteristics of service delivery that impact
most critically his/her perception of the
service
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The three main characteristics of a network
delivering QoS to an end user are as follows:
Availability of the service
Quality of information
Consistent delivery
Technology overview QoS
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At a technical level, QoS is characterized by a
set of measurable parameters such as:
Service availability
Delay
Delay variation
Throughput
Packet loss rate
Technology overview QoS
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UMTS QoS Classes: UMTS define four differentclasses:
Conversational class.
Streaming class.
Interactive class.
Background.
Technology overview QoS
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Call flow example
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Call flow example
General callflow of CS
UE callanother UE
UE callPSTN
PSTN callUE
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Call flow exampleUE call another UE
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Call flow exampleUE Call Another UE
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Call flow example PTSTN Call UE
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3G Video Telephony Deployments
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3G VIDEO TELEPHONE DEPLOYMENTS
1. In Vietnam
2. In Foreign Networks
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Now, Vietnam has 16 million 3G subscribers, representing 15% ofthe national population. For those who use the non-smartphone, 14%will use data services, while 48% of smartphone users will use theregistration data services. Value-added services will be difficult todevelop without a device and a platform necessary to use it
The basic elements: Smart: Provide different service quality with flexible service package
costs so as to maximize revenue
Simple: help reduce network operating costs by simplifying thenetwork architecture and maximize the quality of the transmissionnetwork and traffic
Scalable: Ensure network expansion while saving costs
Superior: Ensure end network performance (for end users) alwaysachieve the best quality.
Secure: Aways be safe from external threats, the exchange ofinformation on which to have high security.
3G VIDEO TELEPHONE DEPLOYMENTSIn Vietnam
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The units granted 3G licenses:
Vinaphone
Viettel
Mobifone
EVN Telecom and Ha Noi Telecom
3G VIDEO TELEPHONE DEPLOYMENTSIn Vietnam
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3G VIDEO TELEPHONE DEPLOYMENTSIn Vietnam
Three basic services: Video call, Mobile Internet, D-com 3G
Seven value-added services: MobiTV, Imuzik 3, Mclip,
Vmail, Game...
With 8,000 3G stations completed the installation
Coveraged 63 provinces and cities in the country
This is the first unit which deployed 3G service(10/2009) Coverage nationwide with 6 milion people who used
3G(35,92% of nationwide)
Internet Services speed height: Mobile Internet, Mobile
Broadband
Three basic services: Video call, Mobile Camera
Entertaiment services: Mobile TV, 3G Portal
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3G VIDEO TELEPHONE DEPLOYMENTSIn Vietnam
With 3,500 3G stations completed the installation
capacity to serve up to four times.
Download speed up to 21 Mbps and upload is
5.76 Mbps
Three basic services: Video call, Mobile Camera
Entertaiment services: Mobile TV, 3G Portal
EVN Telecom will provide consumers with a number ofother value-added services such as video phone, locate
and find information, Internet access, large-capacity data
transmission, listen to music and watch video qualityhigh.
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3G VIDEO TELEPHONE DEPLOYMENTSIn Foreign Networks
In Asia, the first national 3G network is widely used in Japan. In
2001, NTT Docomo is the first company to release a commercial
version of the W-CDMA network.
In 2003, 3G services started in Europe.
In Africa, the first 3G network was introduced in Morocco in late
March 2007 by Wana Company.
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3G VIDEO TELEPHONE DEPLOYMENTSIn Foreign Networks
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3G technology is referred to as an IMT-2000 World
Telecommunications Organization's (ITU), the most in the
world. However, in fact the largest telecommunications
equipment manufacturer in the world has built into 4commercial 3G standards:
W-CDMA
CDMA 2000
TD-CDMA TD-SCDMA
3G VIDEO TELEPHONE DEPLOYMENTSIn Foreign Networks
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LOGO