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NETWORK PERFORMANCE AND TECHNICAL QUALITYNETWORK PERFORMANCE AND TECHNICAL QUALITYPT. SIEMENS INDONESIAPT. SIEMENS INDONESIA20052005
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UMTS INTRODUCTION
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GSM Phases
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GSM Phase 2+ Solution
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GSM Evolution to UMTS
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3G Frequency Spectrum
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UMTS-Two Different Modes
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CDMA Principle
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CDMA Principle
Characteristic of Spread Spectrum Systems
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CDMA Principle
Characteristic of Spread Spectrum Systems
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CDMA Principle
Characteristic of Spread Spectrum Systems
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Conclusion
CDMA Advantages
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DS-CDMA Structure
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DS-CDMA Structure
Data Transmission in UTRAN FDD
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DS-CDMA Structure
Spreading Codes
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DS-CDMA Structure
Spreading and De-spreading
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DS-CDMA Structure
Channelization versus Scrambling Codes
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DS-CDMA Structure
Application of Channelization and Scrambling
Codes
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Siemens, 200519
UTRA Timing Structure
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Siemens, 200520
Definition of Cell & Carrier
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Siemens, 200521
UMTS System Architecture
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System Architecture
Core Network (CN)
Radio Access Network (UTRAN)
User Equipment (UE)
Uu
Iu
General UMTS Hierarchy
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System Architecture
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System Architecture
Node B Functionality
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System Architecture
RNC Functionality
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System Architecture
UE Uu IuCNUTRAN
Access Stratum
Non-Access Stratum
Network Functional Relationships
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System Architecture
Access Stratum contains all radio-access specific functionality e.g.
Mobility Management
offers services to UE and Core Network(CN) e.g.transport of messages
Non-Access Stratum offers UMTS services to the users
Strict separation between Radio Access and CoreNetworks
Enables reuse of Core Network subsystems with many Radio
Access implementations
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System Architecture
RNCRNC
UMTS Network Phase 1
HLR
MSC/VLRMSC/VLR
SGSNSGSN GGSNGGSN
GMSCGMSC
RNCRNC
NodeBNodeB
BSCBTS
RNSRNS
AA
IIuu
GGbb
GGnn
Packet domainPacket domain
Circuit domainCircuit domainPSTNPSTN
PLMNPLMN
InternetInternet
GGii
GGpp
BSCBTS
PCU
MSC/VLRGMSC
Circuit domain
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System Architecture
RNC
BSC MSC/VLR GMSC
Circuit Domain
PSTN
BTS
SGSN GGSN
HLR
Node B RNC
PLMN
Internet/PDN
Packet Domain
Network Evolution Common Platform
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System Architecture
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System Architecture
RNC RN-750 Functionality
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System Architecture
Previous Design RN-750 Rack Types (Frames)
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UTRAN Functional Description
Power Control and Handover
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UTRAN Functional Description
Power Control Principle
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UTRAN Functional Description
Power Control
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UTRAN Functional Description
Open Loop Power Control
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UTRAN Functional Description
Open Loop Power Control
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UTRAN Functional Description
Closed Loop Power Control
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UTRAN Functional Descript
Closed Loop (Inner Loop) Power Control
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UTRAN Functional Descript
Closed Loop (Inner Loop) Power Control
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UTRAN Functional Description
Closed Loop (Outer Loop) Power Control
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UTRAN Functional Description
Power Control
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UTRAN Functional Description
Handover
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UTRAN Functional Description
Soft Handover
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UTRAN Functional Description
Soft Handover
Soft Handover Reporting events
Intra Frequency : 1A, 1B, 1C,
1A : Radio Link Addition
1B : Radio Link Removal
1C : Combined Radio Link addition and removal
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UTRAN Functional Description
Soft Handover
Soft Handover Algorithm and Execution
(an example)
SHO_window
Hysteresis_1AHysteresis_1C
SHO_window +Hysteresis_1B
Connected to Cel l 1
Event 1A
Ad d Cel l 2
Event 1C
Replace Ce ll 1 w ith Cell 3
Event 1B
Remov e Cell 3
CPICH Cell 1
CPICH Cell 2
CPICH Cell 3
Time
Ec/Io
(T (T (T
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UTRAN Functional Description
Handover
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UTRAN Functional Description
Handover
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UTRAN Functional Description
Handover
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Siemens, 200551
Radio Channel Configuration
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Radio Channel Configuration
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Radio Channel Configuration
Logical channels
Carry information (like GSM logical channels)
Transport channels Map logical channels onto physical channels
Dedicated transport channels are dedicated to a user
C
omm
on transp
ort
channels are
comm
on t
oall user in acell
Physical channels Frame sequence, frequency and code
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Radio Channel Configuration
R di Ch l C fi ti
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Radio Channel Configuration
Physical Channel
R di Ch l C fi ti
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Radio Channel Configuration
Physical Channel
Purpose
CommonChannels
Physical andom ccessChannel
(PRACH)
Data Part:
For ransmittingthedatageneratedat Layer andabove.
Control Part:
Fortransmittingcontrolinformationgeneratedat Layer .
-Pilotbits
- ransport-formatcombinationindicator(TFCI)
PhysicalCommonPacketChannel
(PCPCH)
FortransmittingsmallormediumsizepacketsontheCPCH.
DedicatedChannels
DedicatedPhysicalDataChannel
(DPDCH)
Fortransmittingthededicateddatageneratedat Layer andabove.
DedicatedPhysicalControlChannel(DPCCH)
Fortransmittingcontrolinformationgeneratedat Layer-Pilotbits
-Transmitpower-control(TPC)commands
-Feedbackinformation(FBI)
-Transport-formatcombinationindicator(TFCI)
ChannelType
R di Ch l C fi ti
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Radio Channel Configuration
Physical Channel
Pur
l
Pil t l
PI H)
F rtr itti r - fi it/ l quence.
Pri r n ntr l Physical
hannel PCCPCH)
F rtransmittingsystem/cell specific inf rmati nandcontrol information.
-Frequency information
- L scramblingcode
SecondaryCommonControl Physical
Channel SCCPCH)
Fortransmitting informationon theFACHandPCHandcontrol information.
-Pilot bits- Transport-format combination indicator TFCI)
Synchroni ationChannel
SCH)
Forcell search
-PrimarySCH
-SecondarySCH forthe indicationofthescramlingcodegroup)
Physical ownlinkSharedChannel
PDSCH)
Fortransmitting informationonDSCH.
AcquisitionIndicationChannel
AICH)
FortransmittingAcquisitionIndicators AI).
PageIndicationChannel
PICH)
FortransmittingPageIndicators PI).
DedicatedChannel
DedicatedPhysical Channel
DPCH)
Fortransmitting thededicateddatageneratedandcontrol information.
-Pilot bits
- Transmitpower-control TPC)commands
- Transport-format combination indicator TFCI)
Channel Type
R di Ch l C fi ti
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Radio Channel Configuration
Physical Channel
Radio Channel Configuration
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Radio Channel Configuration
Transport Channel
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Radio Channel Configuration
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Radio Channel Configuration
Transport Channel
Transport channels Dedicated transport channel
DCH
Carries all info for a given user
Service data (eg speech) and control data (eg handover
commands)
Data rate and data type changes on a frame by frame basis
Radio Channel Configuration
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Radio Channel Configuration
Transport Channel
Transport channels Common transport channels
Broadcast channel (BCH)
Forward access channel (FACH)
Paging channel (PCH)
Random access channel (RACH)
Uplink common packet channel (CPCH)
Downlink shared channel (DSCH)
Radio Channel Configuration
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Radio Channel Configuration
Common Transport Channel
Broadcast channel (BCH) Inf ormation specific to a cell
Random access codes and slots
Relatively high power
Low and fixed data rate (best coverage)
Forward access channel (FACH) Downlink control information
To specific terminals
Eg after a random access message is received by the BS
Paging channel (PCH) Downlink paging
A terminal is paged in all cells of the Routing Area (Location Area)
in which it is situated
Radio Channel Configuration
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Radio Channel Configuration
Transport Channel
Random access channel (RACH) Uplink access requests
Also small amounts of packet data
Low data rate (best coverage)
Uplink common packet channel (CPCH) Extension to the RACH
Packet based uplink user data
Uplink halfof FACH
Downlink shared channel (DSCH) Shared channel (common channel) but carrying dedicated data
Does not need tobe heard in the whole cell area
Radio Channel Configuration
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Radio Channel Configuration
Logical Channel
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UTRAN FDD
Measurement Abilities
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UTRAN FDD Measurement Abilities
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UTRAN FDD Measurement AbilitiesCPICH Received Signal Code Power (RSCP)
UTRAN FDD Measurement Abilities
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UTRA Carrier Received Signal Strength Indicator
(RSSI)
UTRAN FDD Measurement Abilities
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UTRAN FDD Measurement AbilitiesCPICH Ec/No
UTRAN FDD Measurement Abilities
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UTRAN FDD Measurement AbilitiesSignal Interference Ration (SIR)
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Coverage Analysis: process profile
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