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3G Video Telephony Deployment What is 3GPP?. Quality of Services Call flow 3G-324M Mobile Video Telephony... 2/25/14 3 Mobile Video Telephony  The goals behind 3G were to establish a ta

TS Trương Thu Hương

-Trương Văn Gia

3G Video Telephony Deployment

What is 3GPP ?

Quality of Services Call flow

3G-324M Mobile Video Telephony

2/25/14

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Mobile Video Telephony

 The goals behind 3G were to establish a target for future mobile telecommunications systems, identify which frequency bandwidths would be used, and determine a set of requirements for compatibility within those systems.

 3G video telephony is usually implemented over the 3G-324M protocol Today, handset manufacturers who wish to roll out 3G UMTS or TD-SCDMA handsets are well aware that 3G-324M support is a mandatory requirement for success.

 As Windows Mobile gains popularity and becomes more widely deployed in Smartphones and PDAs.

What is 3GPP ? 3G-324M

What is 3GPP ?

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Collaboration between groups of telecommunication association.

The scope was later enlarged to include the Development and maintenance of: GSM(ex:GPRS,EDGE);

Mobile System based on the evolved 3GPP, IMS…

Initial scope was to make a globally applicable 3G system specification base on evolved GSM.

3GPP(3rd Generation Partnership Project)

The six 3GPP Organizational Partners are from Asia, Europe & North America

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Standard

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Specification groups

 GERAN (GSM/EDGE Radio Access Network)

 RAN (Radio Access Network)

 SA (Service and System Aspects)

 CT (Core Network and Terminals)

Spec TS 26.110

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Spec TS 26.112

What is 3GPP ? 3G-324M

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WHAT IS THE 3G-324M?

Circuit Switched networks

packet

WHAT IS THE 3G-324M?

3G-324M System

H.223 Mux And Demux Data protocols

V.14, LAPM

Audio(speech) Codec AMR G.731.1

Call Control

3G Wireless Network I/F

Video codec H.263/MPEG-4

Wireless

Network

Command & Control

H.245

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Video telephony channel

There are 4 channel in 3G-324:

 Control channel

 Voice channel

 Audio channel

 Video channel

 3G-324M uses H.245 as a terminal control protocol.

H.245 requires the numbered simple retransmission protocol (NSRP) and control channel

segmentation and reassembly layer (CCSRL) sublayer support to ensure reliable operation.

H.245 call control with the CCRL and NSRP to assure that the H.245 channel will be highly reliable and can use large packets during operation

Voice Channel—The AMR Codec

• The 3G-324M specifications define the AMR codec as mandatory 3G-324M also recommends the use of G.723.1, which is used by many H.323 terminals today.

• Optimized for mobile networks, it dynamically adjusts the amount of bits allocated to voice coding and error control, providing the best possible voice quality based

• on radio conditions

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Table list a number of channels audio

LOGO The video channel

visual (AV) digital data.

• H.263 : Is a video compression standard originally designed as a low bitrate compressed format for videoconferencing.

• The 3G-324M standard specifies the H.263 codec as mandatory, with MPEG-4 as a recommended codec for video processing H.263 is a legacy codec that is used by many existing H.323 wireline devices

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MPEG-4 interface to multiplex

• MPEG-4 is much more flexible and offers advanced error detection and correction services, which are a big value add when delivering video over a wireless network.

• Provides error resilience (through data partitioning, RVLC, resynchronisation marker, and header extension code) and low complexity.

Types of video channels 3G-324M

What is 3GPP ?

Quality of Services 3G-324M

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Quality of Services

What is Quality of Service ?

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.

Quality of Services

UMTS QoS Classes: UMTS define four different classes:

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Quality of Services

What is 3GPP ?

Quality of Services Call flow

3G-324M

General call flow of

CS

UE call another

UE

UE call PSTN

UE call to another UE

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UE call to another UE

UE call to another UE

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UE call to PSTN

UE call to PSTN

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PSTN Call to UE

PSTN Call to UE

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PSTN Call to UE

3G Video Telephony Deployment

What is 3GPP ?

Quality of Services Call flow

3G-324M

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• Europe, Japan, Korea, Taiwan, and Australia 3G networks are commercially available and operators are offering video telephony services on the circuit- switch approach.

• Handsets that support conversational video telephony on 3G networks are being produced.

3G Video Telephony Deployment

in foreign

3G Video Telephony Deployment

Figure : Global Growth of 3G Subscribers.

3G Video Telephony Deployment

in foreign

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3G Deployment in Vietnam

EVN-Telecom were awarded licenses to built infrastructure and provide c3G services in the 1900-2200MHz

3G Deployment in Vietnam

Figure 1: Market share of Mobile phone Subscriber (as of July 2010)

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The Current status of 3G development in VN

Figure 2: 3G Network Investment Pledge of Operators

m: million

The Current status of 3G development in VN

 The service was by provided:

 Communications services(video calls, Rich voice…).

 Entertainment services (Video-Music downloading, video

streaming…)

 Billing services (Mobile Payment)

 Personal assistance service (data transmission, e-mail…)

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The Current status of 3G development in VN

 The number of 3G subscribers in Vietnam will be much lower

The Current status of 3G development in VN

Video telephony has not developed in Vietnam

telecommunications market