telecom system subject seminar
TRANSCRIPT
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Teacher: Truong Thu Huong
3G VIDEO TELEPHONY
Student: Group 5
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IP to 3G-324M
To day, many current IP-based applications that run well over mobile devices but
These are all non-delay sensitive services. ( Transmission delay and packet overheads)
IP network has servere limitations in its ability to support, in addtion to voice, delay-sensitive applications.
Don’t provide sufficient address space to handle tons of IP-enabled mobiles.
• Solutions: Moving to full IP version 6. Adopt 3G-324M.
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?
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Third Generation PartnerShip Project
3GPP defining migration from GSM to UMTS (W-CDMA)
Core network evolves from GSM-only to support GSM, GPRS and new W-CDMA facilities
6 Organizational Parters are ARIB, ATIS, CCSA, ETSI, TTA, TTC.
The Four Technical Specification Groups (TSG) in 3GPP are RAN, SA, CT, GFRAN.
3GPP standards are structured as Releases.
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3GPP RELEASES
Phase 1: GSM features. Phase 2: GSM features, EFR codec.
… 3GPP Release 5: Introduced IMS and HSPDA. 3GPP Release 6: Intergrated operation witth wireless LAN
networks and adds HUSPA, MBMS…
… 3GPP Release 11: Advanced Interconnection of Services. 3GPP Release 12: Content still open.
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3GPP rel99 Architecture (UMTS) Specified the first UMTS 3G network 3G Radios
SS7
IP
BTS
BSCMSC
VLR
HLRAuC
GMSC
BSS
SGSN GGSN
PSTN
PSDN
CN
CD
GcGr
Gn Gi
Abis
Gs
B
H
BSS — Base Station SystemBTS — Base Transceiver StationBSC — Base Station Controller
RNS — Radio Network SystemRNC — Radio Network Controller
CN — Core NetworkMSC — Mobile-service Switching ControllerVLR — Visitor Location RegisterHLR — Home Location RegisterAuC — Authentication ServerGMSC — Gateway MSC
SGSN — Serving GPRS Support NodeGGSN — Gateway GPRS Support Node
AE PSTN
2G MS (voice only)
2G+ MS (voice & data)
UMTS — Universal Mobile Telecommunication System
Gb
3G UE (voice & data)
Node B
RNC
RNS
Iub
IuCS
ATM
IuPS
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3GPP rel4 Architecture (UMTS) Soft Switching
SS7
IP/ATM
BTS
BSCMSC Server
VLR
HLRAuC
GMSC server
BSS
SGSN GGSN
PSTN
PSDN
CN
CD
GcGr
Gn Gi
Gb
Abis
Gs
B
H
BSS — Base Station SystemBTS — Base Transceiver StationBSC — Base Station Controller
RNS — Radio Network SystemRNC — Radio Network Controller
CN — Core NetworkMSC — Mobile-service Switching ControllerVLR — Visitor Location RegisterHLR — Home Location RegisterAuC — Authentication ServerGMSC — Gateway MSC
SGSN — Serving GPRS Support NodeGGSN — Gateway GPRS Support Node
ANc
2G MS (voice only)
2G+ MS (voice & data)
Node B
RNC
RNS
Iub
IuCS
IuPS
3G UE (voice & data)
Mc
CS-MGW
CS-MGWNb
PSTNMc
ATM
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3GPP rel5 Architecture IP multimedia
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3GPP re6 Architecture WLAN integration
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WHAT IS THE 3G-324M?
3G-324M is the 3GPP umbrella protocol for video telephony in 3G mobile networks.
3G-324M is based on the ITU-T specifications for multimedia conferencing over Circuit Switched networks.
3G-324M is a proven solution for conversational multimedia based services that packet.
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3G-324M System
H.223Annex AAnnex BAnnex CAnnex D
Data protocolsV.14, LAPM
Audio(speech) Codec AMR G.731.1
Call Control
3GWirelessNetwork
I/F
Video codecH.263/MPEG-4
WirelessNetwork
Command & ControlH.245
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3G-324M Sub protocols and technologies
H.223 Multiplexing/Demultiplexing. H.245 Call Control Channel. 3G-324M Adaption Layers.
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Diagram illustrating the key elements of the 3G-324M spec
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3G-324M Protocol Stack
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Hierarchical class structure of H.245
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Protocols H.223
The H.223 Module is the multiplexer/demultiplexer module responsible for communication with a bit stream driver such as WCDMA, TD-SCDMA, CDMA2000 and ISDN.
The H.223 Module contains Adaptation Layers (ALs) for handling error detection according to the traffic content of each logical channel such as voice, video, data and call control.
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The 3G-324M toolkit supports the following H.223 annexes
Annex A : Specifies the protocol that handles a light error prone channel.
Annex B : Specifies the protocol that handles a medium error prone channel.
Annex C & D : Specifies the protocols that handle highly error prone channels.
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The Toolkit supports three types of Adaptation Layers (ALs)
AL1 : Used to control the call H.245 and AL1 assumes that the upper layer provides error control.
AL2 : Contains speech, error detection and sequence numbering mechanism.
AL3 : Contains video, error detection, sequence numbering mechanism and retransmission mechanism
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Channels
There are 4 channel in 3G-324: Control channel Voice channel Audio channel Video channel
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Channels
Control channel It pass control commands and
indications to remote counterparts.
Terminal-to-model control conforms to [ITU-T V.250]
Terminal-to-terminal control is according to [ITU-T H.245]
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Voice Channel
Adaptive Multi-Rate (AMR) : AMR is a codec used to compress the audio data. providing the best possible voice quality based on radio conditions.
G.723.1 : the G.723.1 codec can be used for compressing the speech or the audio component of multimedia services at a very low bit rate
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Table list a number of channels audio
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The video channel
MPEG-4 : Is a method of defining compression of audio and visual (AV) digital data.
H.263 : Is a video compression standard originally designed as a low bitrate compressed format for videoconferencing.
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The table lists a number of video channels 3G-324m
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QoS
What is Quality of Service? Quality of Service carriers different connotations for
different people. It is the end users who pay for the service, and whose
perspectives matter most. QoS defines the characteristics of service delivery that impact most critically his/her perception of the service.
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QoS
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.
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QoS
At a technical level, QoS is characterized by a set of measureable parameters such as: Service availability. Delay. Delay variation. Throughput. Packet loss rate.
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QoS
UMTS QoS Classes: UMTS define four different classes: Conversational class. Streaming class. Interactive class. Background.
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Call flow example
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Call flow example.
UE call another UE
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Call flow example.
PSTN call UE:
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Call flow example.
UE call PSTN
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3G Video Telephony Deployment in foreign
•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.
-
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3G Video Telephony Deployment in foreign
Asia:o Japanese operator NTT DoCoMo has announced that its
freedom of mobile multimedia access (FOMA) 3G video telephony service.
o SK Telecom is the first network in South Korea. The second is KT.
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3G Video Telephony Deployment in foreign
United States:o The first network to go commercially live was by Monet
Mobile Networks, on CDMA2000 1xEV-DO.o The second 3G network operator was Verizon Wireless.o AT&T Mobility is also a true 3G UMTS network.
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3G Video Telephony Deployment in foreign
Europe:o The first European pre-commercial network was an UMTS
network on the Isle of Manx Telecom.
o The frist commercial network in Europe was opened for business by Telenor.
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3G Video Telephony Deployment in foreign
Southern hemisphere:
The first pre-commercial demonstration network was built Adelaide, South Australia using UMTS on 2100MHz.
Africa: Emtel Launches the first 3G network.
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3G Video Telephony Deployment in foreign
Figure : Global Growth of 3G Subscribers.
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3G Deployment in Vietnam
In August 2009, four enterprises including Viettel, MobiFone, VinaPhone anh EVN-Telecom were awarded licenses to built infrastructure and provide c3G services in the 1900-2200MHz.
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3G Deployment in Vietnam
Figure 1: Market share of Mobile phone Subscriber (as of July 2010)
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The Current status op 3G development in Vietnam
Figure 2: 3G Network Investment Pledge of Operators
__m: million
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The Current status op 3G development in Vietnam
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 op 3G development in Vietnam
Q2’2010 Vietnam has about 7 million subscriber: MobiFone: 4 million subscriber. Vinaphone and Viettel: 1.5 million subscriber.
The number of 3G subscribers in Vietnam will be much lower.
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3G Video Telephony deployment in Vietnam
Video telephony has not developed in Vietnam telecommunications market.
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Additional Reference Material
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Mobile Standard Organizations
ARIB (Japan)
T1(USA)
ETSI (Europe)
TTA(Korea)
CWTS (China)
TTC(Japan)
TIA(USA)
Third Generation Patnership Project (3GPP)
Third Generation Partnership Project II
(3GPP2)
ITU
Mobile Operators ITU Members
IS-95), IS-41, IS-2000, IS-835GSM, W-CDMA, UMTS
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Partnership Project and Forums
ITU IMT-2000 http://www.itu.int/imt2000 Mobile Partnership Projects
3GPP: http://www.3gpp.org 3GPP2: http://www.3gpp2.org
Mobile Technical Forums 3G All IP Forum: http://www.3gip.org IPv6 Forum: http://www.ipv6forum.com
Mobile Marketing Forums Mobile Wireless Internet Forum: http://www.mwif.org UMTS Forum: http://www.umts-forum.org GSM Forum: http://www.gsmworld.org Universal Wireless Communication: http://www.uwcc.org Global Mobile Supplier: http://www.gsacom.com
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Mobile Standards Organizations
European Technical Standard Institute (Europe): http://www.etsi.org
Telecommunication Industry Association (USA): http://www.tiaonline.org
Standard Committee T1 (USA): http://www.t1.org
China Wireless Telecommunication Standard (China): http://www.cwts.org
The Association of Radio Industries and Businesses (Japan): http://www.arib.or.jp/arib/english/
The Telecommunication Technology Committee (Japan): http://www.ttc.or.jp/e/index.html
The Telecommunication Technology Association (Korea): http://www.tta.or.kr/english/e_index.htm
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