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1All Rights Reserved © Alcatel-Lucent 2009
Advanced Wireless Networks UMTS Overview
9300 W-CDMAUA06 UMTS Overview
TMO18023 Edition 1
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1 From 2G to 3G1.1 2G Limitations / 3G Requirements
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1.1 2G Limitations / 3G Requirements
1.1.1 What Are the 2G Limitations?
2G limitations
C U SOONSMS
Rate 9.6kbps
Waste of radio resource (before GPRS)
Not adapted for new services such as video streaming
Large number of 2G systems
=> Lack of compatibility
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1.1 2G Limitations / 3G Requirements
1.1.2 What Are the 3G Requirements?
3G requirements High speed: 144-384kbps: full coverage and mobility 2Mbps: Limited coverage and mobility
Better spectrum efficiency
Worldwide roaming Single system for the following environments:
cellular satellite office residential
Flexibility to introduce new services
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1 From 2G to 3G1.2 2G-to-3G Evolution
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1.2 2G-to-3G Evolution
1.2.1 Evolution of the Radio Access Network
2G RAN
BSS GSM Up to 160kbps Internet
services
R’97/98/99 (GSM)
3G RAN
BSS EDGE Up to 384kbps Internet
services
R’99 (GSM)
Radio technique
FDMA + TDMA
GERAN EDGE Up to 384kbps Multimedia VoIP
R5 (3GPP)
EDGEEDGEE-GPRSE-GPRS
GPRSGPRS
CDMA
UTRAN UMTS Up to 384kbps Multimedia AMR voice
R99’/R3/R4 (3GPP)
UMTSUMTSUTRAN 3G/HSDPA
Up to 10Mbps DL Multimedia AMR voice then VoIP
HSDPAHSDPA
R5 (3GPP) R6 (3GPP)
UTRAN 3G/HSUPA Typical: 2 Mbps
UL Multimedia VoIP
HSUPAHSUPA
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1.2 2G-to-3G Evolution
1.2.2 General Packet Radio Service (GPRS)
VMSC/VLR
CS
GMSC
BSS with PCUBSS (GSM +
GPRS)
POTS
PS
SGSNGPRS
backbone iGGSN
IPnetwork
HLR
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1.2 2G-to-3G Evolution
1.2.3 Enhanced Data Rates for GSM Evolution (EDGE)
New radio modulation
2 generations
GERAN
3G
Up to 384kbps
Insertion in UMTS solutions
E-GPRS
2.5G
Evolution of GSM radio part
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1.2 2G-to-3G Evolution
1.2.4 GSM EDGE Radio Access Network (GERAN)
BSC
GSM
GSM
EDGE
GSM
EDGE
GSM
EDGE
BSCIu
Iu
UMTS
core
network(All IP)
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1 From 2G to 3G1.3 IMT-2000
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1.3 IMT-2000
1.3.1 3G Standardization Bodies
3G.IP
3GPP Members: ETSI (Europe), T1 (USA), TTA (Korea), ARIB/TTC (Japan), CWTS (PRC) Goal: Global specifications for UMTS networks
3GPP2 Members: TIA (USA), TTA (Korea), ARIB/TTC (Japan), CWTS (PRC) Goal: Global specifications for CDMA2000 networks
3G.IP Members: AT&T Wireless (USA), BT (UK), Omnitel (Italy), etc. Goal: Specifications of an all-IP core network standard
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1.3 IMT-2000
1.3.2 Radio and Core Network Subsystems
ANSI-41GSM MAP
4 radio accesses
2 core networks
FDD-DS
IMT-TCUMTSUMTS
TDD
IMT-DS
FDD-MCCDMA 2000IMT-MC
EDGETDMA
IMT-SC
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1.3 IMT-2000
1.3.3 Subsystems Distribution
Western Europe:
GSM(100%)
China:
GSM(95%) CDMA
(13%)
Japan:
PDC(65%) CDMA
(35%)
US & Canada:
GSM(12%) CDMA
(52%) TDMA(36%)
Rest of the World:
GSM(41%) CDMA
(35%) TDMA(24%)
CDMA2000
CDMA2000
CDMA2000
CDMA2000
EDGE
EDGE
EDGE
EDGE
EDGE
EDGE
UMTS
UMTS
UMTS
UMTS
UMTS
UMTS
UMTS1999 Market Share:
GSM 65 %CDMA 14 %TDMA 12 %PDC 9 %
IMT-2000
UMTS
CDMA2000
EDGE
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1 From 2G to 3G1.4 3GPP
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1.4 3GPP
1.4.1 Radio Access Ranges
Satellite
Zone 4: Global
Macro-cell
Zone 3: Suburban
Micro-cell
Zone 2: Urban
Zone 1: In-Building
Pico-cell
UMTS/TDD or
HSDPA/HSUPA
UMTS/FDDEDGEMSS
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2 Services and Applications
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2 Services and Applications2.1 User Equipment
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2.1 User Equipment
2.1.1 Description
User Equipment (UE)
Cu
MobileEquipment
(ME)
Helloworld
1 2 369
587
4
0* #
UMTS
UICC
USIM 2 GSMacces
s
SIM
USIM 1
UMTSNode B
GSMBTS
Helloworld
1 2 369
587
4
0* #
GSM
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2.1 User Equipment
2.1.2 Some Characteristics
Radio technology FDD or TDD
Frequency band 2100, 1900MHz
Power class 1 to 4 (radio transmission power)
Supported classmarks
1 to 4 (GSM and/or UMTS)
Transmission rate class
32kbps to 2048kbps
Location no, A-GPS, OTDOA
Transmission rate class
UP 32kbps
64kbps
128kbps
384kbps
768kbps
2048kbps
Down
32kbps
64kbps
128kbps
384kbps
768kbps
Power class
1 2 3 4
2W 0.5W 0.25W
0.126W
Supported classmark
TYPE 1
No measurement on other network
Manual Switch
TYPE 2
Measurements on other network
Automatic switch
TYPE 3
Plus simultaneous reception Rx on GSM and UMTS
TYPE 4
Plus simultaneous transmission Tx and Rx on GSM and UMTS
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2.1 User Equipment
2.1.3 How to Access Services?
distributed
integrated Probably 2 in 1
Strong consumer expectation for mobile multimedia
Excellent tool for vertical market applications
Operator / Manufacturer Flagship product (NTT DoCoMo)
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2 Services and Applications2.2 Types of Services
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2.2 Types of Services
2.2.1 Applications
Always-onapplications
User Equipment = always-on device
User Equipment = information device
User Equipment =store
Mediaapplications
Purchasing:Purchasing:
MerchantMerchant
M-Commerceapplications
Infotainment:Infotainment:
Service ProviderService Provider
Communicating:Communicating:
Users/Machines Users/Machines
Helloworld
1236958740*#
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2.2 Types of Services
2.2.2 QoS Classes
Traffic Class
AMR speech service Video telephony (IETF multimedia architecture):
CS: H.324 PS: H.323
Data integrity sensitive
-
+
E-mail delivery
SMS Etc.
Location-based services
Computer games
Delay sensitiv
e
-
+
streaming
interactive
background
conversational
Video on demand
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3 UMTS Architecture
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Objectives
Objectives:To be able to describe the functional architecture of the UMTS network.
Content:3.1 UTRAN3.2 Core Network3.3 Protocols on Iu
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3 UMTS Architecture3.1 UTRAN
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3.1 UTRAN
3.1.1 The UTRAN in the UMTS Architecture
UMTS PLMN
Iu
PSTN
IPnetwork
UTRAN Core network
UEHelloworld
1236958740* #
Uu
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3.1 UTRAN
3.1.2 Functions
UTRANfunctions Radio resource management
and control
Mobility procedures
Transfer of data,ciphering / deciphering
Broadcast / Multicast
Overall system access control
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3.1 UTRAN
3.1.3 Architecture
RNS
RNS
Node B 1
Iu
IuIub
Iub
Iub
Serving
Node B 2
Node B 3
UuUE
Helloworld
1 2 3
6
9
5
87
4
0* #
CorenetworkIur
RNC 1
RNC 2
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3 UMTS Architecture3.2 Core Network
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3.2 Core Network
3.2.1 Functions
Core Networkfunctions
Management of user location information
Control of network features and services
Communication with RANs and other CNs
Transfer mechanisms(switching and transmission) for signaling and user data
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3.2 Core Network
3.2.2 3GPP R'99/R3 Architecture
CS domain
PSTN
PS domain
IPnetwork
UTRAN
Iu-CS
Iu-PS
Gn
Gi
D
Gc
C
Gr
MAP
ISUP
SS7 network
GTP
IP network GGSN
SGSN
Gs HLR
MSC/VLRGMSC
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3.2 Core Network
3.2.3 3GPP R4 Architecture
PS domain
Iu-PS
IPnetwork
SGSN GGSN
UTRAN
HLR
Iu-CS
PSTN
MSC/VLR MSC/VLR
User data
Signaling
MSC server & VLR
CS-MGW
GMSC server
CS-MGW
IP, ATM
BICC
BSS Edge
A,
Gb,
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3.2 Core Network
3.2.4 3GPP R5 Architecture
Iu-CS CS-domain
IMS
PS domain
Iu-PS
IPnetwork
PSTN
UTRANBSS EdgeBSS EdgeGERAN HSS
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3.2 Core Network
3.2.5 3GPP R5 Architecture: IMS
IMS
PS domain
Iu PS
SGSN GGSN
UTRANGERAN
IPnetwor
k
OtherPLMN
PSTN
HSS
MGCF
IM-MGW
SIP CSCFBGCF
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4 UMTS Basic Principles
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Objectives
Objectives:To be able to describe the UMTS and CDMA basic principles.
Content:4.1 CDMA Principles4.2 Radio Resources: Frequency, Time, Power/Code4.3 Radio Resource Management
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4 UMTS Basic Principles4.1 CDMA Principles
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4.1 CDMA Principles
4.1.1 Multiple Access Technique
User1
User2
User3
User1
User2User3
User1User2
User3
FDMA TDMA CDMA
Time
Frequency
Power
Time
Frequency
Power
Time
Frequency
Power / Code
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4.1 CDMA Principles
4.1.2 CDMA Characteristics
The entire bandwidth is used by each user at the same time: Intra-cell interference. User orthogonality is achieved by codes.
1 frequency on all the cells, so the entire bandwidth is used in each cell: Inter-cell interference. Cell orthogonality is achieved by codes.
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4.1 CDMA Principles
4.1.3 CDMA Modes
FDD mode
Code and frequency orthogonality Downlink
Uplinkf1
f2
5-MHz channel
5-MHz channel
TDD mode
Code and timeorthogonality
Uplink & Downlink15 TSs
. .. . ..
Helloworld
1 2 3
6
9
5
87
4
0* #
Helloworld
1 2 3
6
9
5
87
4
0* #
Helloworld
1 2 3
6
9
5
87
4
0* #
Helloworld
1 2 3
6
9
5
87
4
0* #
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4.1 CDMA Principles
4.1.4 CDMA Frequency Range
1900 1980 2010 20251920
FDD mode Wide CDMA paired bands (2 x 60MHz)
TDDTDD FDD UL
FDD DL
MSS UL
MSS DL
TDD modeTD/CDMA (Time Division) unpaired bands (35MHz)
2170 2200 2110
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4.1 CDMA Principles
4.1.5 UMTS 900/850MHz
64 CSD 900 MHz64 CSD 900 MHz64 CSD 2 GHz64 CSD 2 GHz64 CSD 2 GHz64 CSD 2 GHz
Site count reduction Better in-building penetration gain
GSM site reuse
More coverageBetter indoor penetration
Our R&D Driver of UMTS 900Hz Specifications at 3GPP
UMTS/HSDPA + 900/850MHz = Winning Combination
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4.1 CDMA Principles
4.1.6 HSDPA: What For?
HSDPA Standardized by 3GPP R5 HSDPA is designed to: Increase the Downlink data throughput over the air interface (theoretical peak user bit rate = 14.4Mbps). Provide instantaneous high data rates in the PS domain (e.g., Internet browsing, video on demand).HSDPA could be deployed in both FDD and TDD modes.
DL
UL
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4.1 CDMA Principles
4.1.7 HSDPA: Better Use of Resources
HSDPA 3G with a High Speed DL Shared Channel
Classical 3G with Dedicated Channel
A shared channel is much more efficientthan a dedicated channel to carry bursty packet traffic.
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4.1 CDMA Principles
4.1.8 HSUPA: What For?
HSUPA Standardized by 3GPP R6HSUPA standardized by 3GPP R6 is designed to increase the Uplink data throughput over the air interface (theoretical peak user bit rate = 5.7Mbps).
3GPP 3GPP Release Release
66
ThroughputThroughput&&
CapacityCapacityH
SUPA
HSUPA
UplinkUplink
DedicatedDedicatedChannelsChannels
HighHighThroughpuThroughpu
tsts
R99 = 384 kbps UL
Cat. 5 UE: 2 Mbps UL
Cat. 6 UE: 5.7 Mbps UL
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4 UMTS Basic Principles4.2 Radio Resources: Frequency, Time, Power/Code
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4.2 Radio Resources: Frequency, Time, Power/Code
4.2.1 Definition
f
Power
N0
Spread Signal S’
Schip
01
0011
0010
Channelization code example:Spreading factor = 4
UE1
01
1011
1010
UE2
1 Spreading SAME E-TACTIC
- CATS EAT MICEn Chips
n ChipsChannelization Code
Scrambling Code
2 Scrambling
S
T
AC-E
E
A TM
IC
f
Power
Sbit
N0
SIR
SS: Signal level
N: Noise level
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4.2 Radio Resources: Frequency, Time, Power/Code
4.2.2 Multiple Access
Noise!
ChannelizationBit chips
scrambling
Mixed chipsmodulation
UE1
UE2
Node B
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4.2 Radio Resources: Frequency, Time, Power/Code
4.2.3 FDD and TDD Modes Characteristics
FDD TDD
Multiple access scheme Direct-Sequence CDMA TDMA with CDMA in time slots
Duplex scheme Frequency division Time division
Frequency bands UL: 1920-1980MHz DL: 2110-2170MHz
UL:1900-1920MHz DL: optional 2010-2025MHz
Bandwidth Nominal 5MHz Nominal 5MHz
Chip rate 3.84Mcps 3.84Mcps
Frame length 10ms 10ms
Slots per frame 15 15
Inter-BS synchronization Not Needed Synchronization needed
Multi-rate/variable-rate scheme
Variable spreading factor, multi-code
Multi-slot, multi-code
Spreading factor DL: 512 to 4 UL: 256 to 4
16 to 1 (UL and DL)
Channel coding scheme Convolutional, Turbo Convolutional, Turbo
Bearer capability Up to 2Mbps Up to 2Mbps
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4 UMTS Basic Principles4.3 Radio Resource Management
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4.3 Radio Resource Management
4.3.1 Soft Handover (1/2)
Core network
Iu Iu
IubIub
RNC1 RNC2
Node B2 Node B3
driftdriftIur
servingserving
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4.3 Radio Resource Management
4.3.2 Soft Handover (2/2)
Core network
IubIub
Iu
Iub
Iur
Iu
Iub
Node B1 Node B2 Node B3 Node B4
RNC1
1 2 3 4
S D
5
DS
6
SRNC2
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4.3 Radio Resource Management
4.3.3 Power Control (1/2)
Node B
Helloworld
1 2 3
6
9
5
87
4
0* #
Power Control Issue Near-far effect in uplink Minimize the interference level
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4.3 Radio Resource Management
4.3.4 Power Control (2/2)
SIR > SIRtarget?
Node B
Open loop
Closed loop
Node B
Outer loop
Inner loop
Tx powerestimation
SIR > SIRtarget?
TPC command
RNCSIRtarget
adjustment
SIR target
Helloworld
1 2 3
6
9
5
87
4
0* #
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4.3 Radio Resource Management
4.3.5 Radio Resources
Concentric Coverage: The coverage is determined by the uplink interference level.Soft capacity: The capacity is determined by the downlink interference level and the code orthogonality.Load of the cell: trade-off capacity/coverage (breathing cells).
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End of ModuleUMTS Overv iew
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QuizMaker
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Appendix
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Standards: Series 21 to 23
21-Series: Requirements SpecificationsThese specifications are often transient and contain requirements leading to other specifications. They may become obsolete when technical solutions have been fully specified. They could then, e.g., be replaced by reports describing the performance of the system. They could be deleted without replacement or be kept for historical reasons but turned into background material. When found necessary and appropriate, the transient or permanent nature of a requirement specification may be expressed in its scope.
22-Series: Service AspectsSpecifications in this series specify services, service features, building blocks or platforms for services (a service feature or service building block may provide certain generic functionality for the composition of a service, including the control by the user; a platform may comprise a single or more network elements, e.g. UIM, mobile terminal, auxiliary system to the core network etc.). Stage-1 aspecs that are felt appropriate belong to this series. Reports defining services which can be realized by generic building blocks etc. also belong to this series.
23-Series: Technical RealizationThis series mainly contains stage-2 specifications (or specifications of a similar nature describing interworking over several interfaces, the behavior in unexceptional cases, etc.).
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Standards: Series 24 to 26
24-Series: Signaling Protocols (UE - CN Network)This series contains the detailed and bit-exact stage-3 specifications of protocols between Mobile Station/User Equipment and the Core Network.
25-Series: UTRA Aspect25.100-series: UTRA radio performance aspects (radio performance of UTRAN).25.200-series: UTRA radio aspects ((physical) layer 1 of UTRA).25.300-series: UTRA radio interface architecture, layer 2 and layer 3 aspects (layer 2/3 of the UMTS radio).25.400-series: UTRA network aspects (Iub, Iur and Iu interfaces within UTRAN).
26-SeriesSpeech codecs and other codecs (video, etc.).
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Standards: Series 27 to 31
27-Series: DataFunctions needed to support data applications.
29-Series: Signaling Protocols (NSS)This series contains the detailed and bit-exact stage-3 specifications of protocols within the Core Network.
30-Series: Program ManagementThis series contains the 3GPP 3rd Generation Mobile System, project plans / project work program and standalone documents for major work items.
31-Series: UIMThis series specifies the User Identity Module (UIM) and the interfaces between UIM and other entities.
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Standards: Series 32 to 35
32-Series: Operation and MaintenanceThis series defines the application of TMN for the 3GPP 3rd Generation Mobile System and other functions for operation, administration and maintenance of a 3rd Generation Mobile System network.
33-Series: Security Aspects This series contains specifications of security functions.
34-Series: Test This series contains test specifications.
35-Series: AlgorithmsThis series contains the specifications of encryption algorithms for confidentiality and authentication, etc.
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Answer the Questions
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Module Summary
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Discussion or Question
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Self-assessment on the Objectives
Please be reminded to fill in the formSelf-Assessment on the Objectivesfor this module
The form can be found in the first partof this course documentation
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References