02UMTS Network Architecturenew
Transcript of 02UMTS Network Architecturenew
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UMTSNetwork Architecture
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Module topics
Introduction to UMTS Release 99
architecture
Radio Access Network
User Equipment
Core Network
UMTS network management solutions
Review questions
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Objectives 1(2)After completing this module the student will be
able to:
Identify and list the network subsystems ofRelease 99
Identify and list the requirements of UMTSmobile terminals
Briefly explain the network elements used inRelease 4
List and identify the network elements usedwithin the radio access network (RAN), in termsof the name and function
Briefly explain how base station sites areselected and describe the different cellulartransmission solutions available
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Objectives 2(2) Identify the main functions of the Nokia RNC
List and identify the network elements used withinthe core network in terms of the name andfunction within the context of Release 99
List and identify the need for comprehensivenetwork management in UMTS. With the help of
the material, identify the framework of the NokiaNetAct solution
without using any references (if not otherwisestated).
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Combined GSM/UMTS Rel. 99 PLMNCN (Core Network)
NMS (Network Management Subsystem)
circuit switched (cs) domain
packet switched (ps) domain
commoncs & ps
networkelements
networkelements
for servicegroups
UTRAN(UMTS TerrestrialRadio AccessNetwork)
GERAN(GSM EDGERadio AccessNetwork)
new
enhancedGSMcore
network
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UMTS Rel. 99 Core NetworkCN (Core Network)
circuit switched (cs) domain
packet switched (ps) domain
commoncs & ps
networkelements
GERAN
UTRAN
MSC/VLR GMSC
HLREIRAC
GGSNSGSN
PSTN/ISDN
corp.network
WAP
PDNIP-backbone
CG
BillingCentre
BG
Inter-PLMNNetwork
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- subscriber profile (temporary)- location information (e.g. LAI)
- subscriber identifier (e.g. IMSI, TMSI)
CS-Domain Network entities
Exchange specific functions:- switching- signalling evaluation- operational tasks
(alarms, CDR generation, statistics)
Mobile communication specificfunctions- Interrogation of HLR
Mobile communication specific functions- mobility management- mobile specific connection management- interaction with HLR and VLR- interaction with GERAN/UTRAN- transcoding (UMTS only)
Mobile services Switching Centre (MSC)
GatewayMobile services Switching Centre (GMSC)
Exchange specific functions:- switching- signalling evaluation- operational tasks
(alarms, CDR generation, statistics)
Visitor Location Register (VLR)
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Common CS- & PS Domain NetworkEntities
Home Location Register (HLR) semi-permanent subscriber
profile location information
Authentication Centre (AuC)generates subscriber related data for
USIM VPLMN mutualauthentication
ciphering
Equipment Identity Register (EIR)verification of User Terminal/mobile
equipment
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PS-Domain Network entities
Serving GPRS Support Node (SGSN)
Network Access Control(authentication, authorisation,admission control, CDR collection,
operator determined barring) Packet Routing & Transfer
(relay, routing, address translation &mapping, encapsulation, tunnelling)
Mobility Management
Gateway GPRS Support Node(GGSN)
Network Access Control(CDR collection, screening)
Packet Routing & Transfer(relay, routing, addresstranslation & mapping,encapsulation, tunnelling)
Mobility Management
Border Gateway (BG)
For secure inter-PLMN connection
Charging Gateway Function (CGF)intermediate between SGSN/GGSN
and billing centre
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Network architecture of Rel 4
Separation of control plane from user plane, simpler and
more efficient Statistical multiplexing gain and convergence with PS
core as ultimate aim
More efficient transmission reduces costs this allowingmore complex services to be offered
Evolutionary phase towards Release 5 which in turn willoffer even more advanced services
GERAN implementation
Implementation of Rel4 starts already 2002-2003, butmost of the implementations can be anticipated in livenetworks starting from approximately the year 2005.
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Bearer Independent Call Control (Rel. 4)
HLR
MSC-Server
GMSC-Server
CS-MGW
CS-MGW
UTRAN
GERAN
PSTN, ISDN,
PLMN, etc.
CSE
CAP CAP
Iu
Iu
A
A
D C
Nc
Nb
Mc(H.248)
Mc(H.248)
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Bearer Independent Call Control (Rel. 4)
HLR
MSC-Server
GMSC-Server
CS-MGW
CS-MGW
UTRAN
GERAN
PSTN, ISDN,
PLMN, etc.
CSE
CAP CAP
Iu
Iu
A
A
D C
Nc
Nb
Mc(H.248)
Mc(H.248)
Call control (MOC, MTC) VLR functionality UE-network signalling
Network-networksignalling
Interaction with cs-MGW CDR generation
Interrogation of HLR Network-network
signalling
Interaction with cs-MGW CDR generation
Bearer control Bearer channel
termination Media conversion Payload processing
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UMTS Release 4: GERANCN (Core Network)
circuit switched (cs)
domain
packetswitched (ps) domain
3GMSC/VLR
3G
SGSN
RNC
Node B
Node B
Radio Network Subsystem (RNS)
Iub
Uu
BSC
BTS
BTS
BSCBSS
2GSGSN
Iu-g
Iu-g
Um
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UMTS Release 5 IMS Overview (Roaming userexample)
HSS
MRF
S-CSCF
SGSN
I-CSCF
GGSN
P-CSCF
IMS
IMS
Other IP/IMSnetwork
RAN
Home network
Visited network
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UMTS Rel. 99: UTRANCN (Core Network)
circuit switched (cs)
domain
packetswitched (ps) domain
3GMSC/VLR
3GSGSN
UTRAN (UMTS Terrestrial Radio Access Network)
RNC
Node B
Node B
RNC Radio Network ControllerUE User Equipment = Mobile Equipment (ME) + Universal SIM (USIM)
RNC
Node B
Node BRadio Network Subsystem (RNS)
Radio Network Subsystem (RNS)
Iub
Iub
Iur
Iu-PS
Iu-CS
Uu
Uu
UE
UE
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Iur-Interface & Soft HandoverCN (Core Network)
circuit switched (cs)
domain
packetswitched (ps) domain
3GMSC/VLR
3GSGSN
UTRAN
RNC
Node B
Node B
RNC Radio Network ControllerUE User Equipment = Mobile Equipment (ME) + UMTS SIM (USIM)
RNC
Node B
Node B(RNS)
Radio Network Subsystem (RNS)
Iub
Iub
Iur
Iu-PS
Iu-CS
Uu
Uu
UE
I can beconnected toseveral cells
simultaneously
Duplication of DL traffic,selection of UL traffic
Radio Network Controller Tasks &
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Radio Network Controller Tasks &Functions
WCDMA radio resource managementincl. Radio resource management ofchannel configurations,traffic and control channels, handovers,power control.
Telecom functionalityincl. Location & connection management,ciphering, Iu and Iub channel management,ATM switching and multiplexing
Maintenanceincl. Fault localisation and reconfiguration
Operationincl. RNC and Node B parametermodification
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Iub InterfaceATM
Uu InterfaceWCDMA
Cellular Transmission management
Managing ATM switching and multiplexingover the Iub interface. Control of AAL2/AAL5connections. Control of the physical
transmission interfaces E1, PDH, SDH ormicrowave.
Air Interface management.
Controlling Uplink and Downlinkradio paths on the Uu AirInterface. Baseband to RFconversion. Antenna multi-
coupling.
O&M Processing.Interfacing with NMS
and RNC for alarm andcontrol (Operations andMaintenance) functions.
Radio Channel functions.Logical to physical channel
mappings. Encoding/DecodingSpreading/Despreading user
traffic and signalling.
RNC
Node B Tasks & Functions
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Area type Dense
Urban
Urban Suburb Rural
Speech 92 93 95 95 %144 kb/s NRT 85 85 85 85 %
GSM1800 speech 85 85 85 85 %
Cell range 1 1.6 2.3 5.2 km
Factors affecting cell size include:
Frequency band - 2000MHzmuch higher than GSM networks.
Traffic types - WCDMA user datarates drop off as the user movesfurther away from the Node B
User levels - Demand for mobileservices will increase, leading tomuch greater user densities
Fast DataUsers
Voice andSlow Data
Users
average projected coverage
WCDMA Cell Coverage
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Voice traffic
Data Traffic
Soft Capacity
Capacitypercellp
ercarrier
800kbps L1 rate
50 Erlang
More Voice Users Traffic Mix More Data Users
100%50%0% Load per carrier
OutputPower
"Safe area"
Once Output Power Levelon Uplink passes the SafeArea limit, the WCDMA air
interface becomesunstable. Load per carrier
must be kept below thislimit
WCDMA Cell Capacity
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HSDPA Release 5
AMC, adaptative modulation and coding 16 QuadratureAmplitude Modulation used in good radio link conditions
Automatic Retransmission Query (ARQ) as errordetection mechanism provides efficient retransmissons
support for services requiring high data rates in
downlink, e.g. Internet browsing and video on demand.
High data rates up to 10Mbit/s
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WLAN and UMTS
WLAN use examplesHotels Business travelers make full use of their hotel stay by getting broadband access.
Airport loungesAirports offer considerable potential traffic and have good publicity value.
Business parks and campus areasMobile broadband access made available to roaming users and those with no access to a corporate network or
other networks.
Corporate buildings and meeting roomsaccess in meeting rooms and other shared venues.
Exhibition and convention centresaccess to the information needed for presentations
Enhance mobile data services
Wireless LAN is being standardized by the IEEE
11 Mbit/s between a terminal and an access point.
With more advanced modulation technology to give data rates up to 54 Mbit/s.
Encryption of the air interface defined
2G SIM and 3G USIM cards can be used for authentication
3GPP Rel. 6 includes wireless LAN for use with cellular networks
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User Equipment
User Terminal
User Equipment (UE)
+
USIM
Uu
Node B
M bil l
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Mobile concepts - sample
T i l l i & i l l
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Terminal evolution & wireless protocols
dual moderequirement
UE FDD l
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UE FDD power classesWCDMA FDD Power Class Maximum output
powerTolerance
Power class 1 33dBm (2W) +1dB/-3dBPower class 2 27dBm (0.5W) +1dB/-3dB
Power class 3 24dBm (0.25W) +1dB/-3dB
Power class 4 21dBm (0.125W ) +/-2dB
GSM 900 Maximum output power
Power class 1 43dBm (20W) only used in GSM Phase 1
Power class 2 39dBm (8W)
Power class 3 37dBm (5W)Power class 4 33dBm (2W)
Power class 5 29dBm (0.8W)
Note: The maximum output power of FDD PCs 2 till 4 is smaller compared to GSM because ofcontinuous
transmission instead of non-continuous transmission of GSM. The maximum transmission powerdetermines thecell radius.
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UMTS / Universal SIMOwn processor and memory
Two types of data: Specified data
Subscriber dependent
Featuring:
Two name fields per entry
Multiple phone numbers per entry
Support of e-mail address
User definable groupings Call details
USIM security
N ki h d l tf
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Nokia hardware platform
IPA2800 Nokia IP
DX200
HP/SUN
Nokia's interface to the platform
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Nokia's interface to the platform
NEMU - Network Element Management Unit
Future NED
BTS Tools
Nokia Online Services
NetAct
Nokia Core network in Release 99
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Nokia Core network in Release 99
Operator IP network
Packet core
Iu-PS
HLR
GGSN
CG BG DNS
Firewall
Mobility Core
2GSGSN
RAN
2GMSC
RNC3G
SGSN
MGW
BSC
Iu-CS
A
Gb
NMS
PSTNPSTN
PSTNInternet
Mobile Switching Centre
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Mobile Switching Centre
MSCi architecture
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MSCi architecture
OMU
TGFP
CDSU GSW
BSS
NSS
X.25 or
LAN to
OMC and
SMS
PSTN
VLRUCMCMUCCMU STU CHU
ET
ECET
CLS
PABXECET
ET
VDU
andLPT
VDU
and
LPT
PAUBSUMFSU BDCUM
LANLAN
CASUCCSU
MB
LAN
EXT. SYNC.
VANG
OMU - Operation and Maintenance UnitCentralised supervision, alarms, recovery. System softwareCHU/STU - Charging/Statistical UnitsGeneration/storage of CDRs/measurement data storage
VLRU - Visitor Location Register Unit
Storage of temporary subscriber information
CM - Central Memory
Tariffing, signalling, routing and configuration data
CCMU - Common Channel signalling Management Unit
Signalling management functions for CCS7 (SS7)
BDCU - Basic Data Communications Unit
Communication links to O&M, SMSC, Billing Centre
ET - Exchange Terminal
Electrical synchronisation, adaptations of external PCM line
GSW - Group Switch
The actual switching network of the MSCi
M - Marker
Controls the Group Switch
CASU, PAU, BSU, MFSU, CCSU
Signalling units supporting different types of protocols
CLS - Clock System unit
Clock signals for synchronisation
CDSU - Compact Data Service Unit
Enables Circuit Switched data, modem pools, rate adaptation
TGFP - Tone Generator Field Programmable
Generates DTMF signals
ECET - Echo Cancelling and Exchance Terminal
Same as ET, but with echo cancelling capability
CMU - Cellular Management Unit
Cellular radio network and CDSU control
IP Bypassing (optional topic)
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IP Bypassing (optional topic)
Inter-MSC traffic routed through an IP-based data networkinstead of trunk lines.
Main benefits: Cost savings when data connections are cheaper than
PCM links. Synergies with operator's other activities, e.g. only one
inter-city IP network. Enables integration and optimisation of IP network andPCM link based transmission.
Integrated solution enables common operation andmanagement with GSM network and the gateway.
All applications, like mobile transmission and video data,
can use the same network.
MGW for MSC
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MGW for MSC
Iu-CS
PSTN/Transitnetwork
TDM
Nokia 3G MSC
DX 200 MSC
STM-1 MGWRNC
ATM
PCM
Main functions of MGW:
ATM/TDM conversion
Iu/A signalling conversion between narrowband and broadbandCCS7
Transcoding
Block diagram of the MGW for 3G-MSC
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Block diagram of the MGW for 3G-MSC
CACU (Control and Administrative Computer Unit). Controlsswitching fabric units (SFU) based on inputs from InterfaceSignalling Units (ISUs).
CM (Central Memory). Central data storage, distribution facility,CCS7 signalling handling (e.g. digit ananlysis).ISU (Interface Signalling Unit). CN emulation and signallingemulation towards the MSC.
NEMU (Network Element Management Unit). Local userinterface, inter-face towards higher level network management.Some O&M functions.
OMU (Operation and Maintenance Unit). System software, O&Mfunctions, etc.SPMU (Signal Processing Management Unit). Control allocationof MGW for 3G-MSC's digital signalling processors.
TCU (Transcoding Unit). Performs the actual conversionbetween different AMR speech formats and PCM, and viceversa.
SFU (ATM Switching Fabric Units). Switches the calls processedby the exchange.
MXU (Multiplexer Units). Connects network interface units,computer units & signal processing units to the main switchfabric.
A2SU (AAL2 Switching Units). Ensures efficient transport ofinformation with limited transfer delay for units connected to themain switch fabric.
Nokia 3G MSC & MGW - Summary
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Media Gateway: 5120 transcoding channels 8 RNCs IPA 2800 platform Iu-CS interface
MSCi: Simultaneous support for UMTS (A')
andGSM (A) traffic 600 000 BHCA 16 700 Erlangs 600 000 subscribers +
200 000 telemetric subscriber 100% IN/SCE traffic support
Nokia 3G MSC & MGW - Summary
Iu-CS
PSTN/Transit
network
TDM
Nokia 3G MSC
DX 200 MSC
STM-1 MGWRNC
ATM
PCM
DX 200 HLRi
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DX 200 HLRi
O M U
G S W
X.25 orLAN toOMC andSMS
MSC
S T U
E T
C L S
HLRE T
VDUandLPT
VDU
andLPT
C M MC C S U B D C U
A C U D B D UH L R UE M U
E I R U
MB
LAN
Nokia HLRi capacities
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Nokia HLRi capacities 1 200 000 subscribers + 400 000 telemetric subscribers AuC capacity 2.4 million subscribers
EIR with: 4 million entries in the black list (up to 1 000IMEIs/entry) 4 million entries in the grey list (up to 1 000IMEIs/entry)
200 000 entries in the white list (up to 1 000 000IMEIs/entry)
Mobile Number Portability Solution(SRRi)
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(SRRi) The Service
Routing Registeris to remove excesssignalling andcomplex databasesand routing, bymanaging the
address of eachsubscriber.
SRRiDatabase
HLR HLR
MSC
SGSN
MSISDN1 - rerouting info
MSISDN2 - rerouting info
.
.
1
Othernetworks
In some countries,the law states thatsubscribers must
be able to keeptheir number ifthey change theoperator.
SRRi architecture
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SRRi architecture
GSW
CCSU CMM BDCU
SRRU OMU
X.25 or LAN
to OMCand SMS
MESSAGE BUS
ET
CLS
MSCHLR
VDU and LPT
ET
STU
LAN LAN
DBDU
LAN LAN
VDU and LPT
Packet switched core network overview
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Router
SGSN
BG
LegalInterceptionGateway
DomainNameServer
BorderGateway
Serving GPRSSupport Node
CG
GGSN
Firewall
GatewayGPRS
Support Node
LocalArea NW
Server
ChargingGateway
Corporate
DNS
2G & 3G
GPRS BackboneIP Network
Internet
GSM BSS or3G RAN
Inter-PLMNNetwork
Intranet
3G-SGSN & GGSN
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3G SGSN & GGSN The 3G-SGSN & GGSN are built on the IP Platform
(2G-SGSN uses the Nokia DX200 Platform).
Power supplies
Cooling fans
Cable guides
Processor units on2 trays
1193
In UMTS some of thefunctionality needed in the2G-SGSN is now included asfunctions in the RNC.
The 3G-SGSN is a compactunit.
System structure of Nokia 3G-SGSN
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System structure of Nokia 3G SGSN
Iu
Gn
Internal maintenance bus
Gr, Gf, Gd
E1/T1SMM UnitMobility Management Session Management Signalling
ATM
STM-1
100 BaseTx1000 BaseT
ForwardingUnit
Central RouteProcessor Unit
O&M Routing
TunnellingUnit
E1/T1
SS7Unit
ATMSTM-1
Capacity
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Capacity
Max number of subscribers: 300 000
Throughput and number of connections: 900 Mbps and 200 000 PDP contexts OR 600 Mbps and 600 000 PDP contexts (512 byte packet size)
Connection attempts: 600 PDP procedures per
second 300 000 SMS messages per hour
Interfaces of 3G-SGSN
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Interfaces of 3G SGSN
3G SGSN
3G SGSN3G SGSN
Gn
Gr
Gf
Gd
3G Core Network
(HPLMN)
HLR & AUC
EIR
SMSC
Iu
Gp3G Core Network
(VPLMN)
RNC
NMS
CG
Ga
Other packet core network elements
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Other packet core network elements
GGSN (Gateway GPRS Support Node)Nokia version based on IP650 or IP740 routers
Release 2, IP650: 150 000 PDP contexts100 Mbps (1400 byte packets)
Release 2, IP740: 1 million PDP contexts400 Mbps (1400 byte packets)
Both can interact with 2G-SGSN and 3G-SGSN
BG (Border Gateway) Router to Inter-PLMN data network
DNS (Domain Name Server) Access point name IP address of correct GGSN
CG (Charging Gateway)
LIG (Legal/Lawful Interception Gateway)
Nokia FlexiFamily
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Nokia FlexiFamily
High-availability carrier-grade server platform
Linux based
Nokia IP Multimedia Subsystem servers based on NokiaFlexiServer
Nokia FlexiGateway a carrier-grade gateway platform and thefuture basis for network user-plane functions such as packet
routing and processing
Nokia FlexiGateway, with specially designed content-awareprovisioning extensions, will gradually complete theimplementation of the All-IP architecture
o a u me a ore o u on(simplified)
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(simplified)
HLRMSC/MSS
SGSN
SGSNGGSN
GGSN
CG
LIG
BG
DNS
IMR CPS
GERAN/UTRAN
MPC
MGW
IP Multimedia core
Traffic on PoC Network
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SGSNPAPUunits
BSCPCUunits
BTS
GGSNWith PoCAPN
GPRSbackbonenetwork
Customer Care andBilling
ProvisioningNetwork Management
WEB basedManagement Provisioning Self provisioning
PoC CallProcessors
PoC Register
LDAP parametermanagement
GPRS
Green elements required for PoC
IP layer
Service managementRadio access
layerarchitecture
Consumers
Access Control& EnterpriseConnectivity
HTTP human interfaceCommunicationParameters(timers)
CDRparameters
SUN
Operator Data Center
Enterprises
SystemParameters
Sub SystemServerParameters
Radiointerfacemanagement
Packet Core management
Nokia ICD System Release 1, ED 1
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ISN 1.1
Gi
Contentproviders
Gn
Serviceaccess
CG 4.0BSS
GGSN4.0
TA 1.2
OSC1.0
NSM 1.0
CA 1.1
ICDNetAct
3.1 ED2
CD 9/03
Prepaid System
OSS
CCBS
GGSNfunctions
TrafficAnalyser
Contentfunctions
Single Click Access
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Nokia ICD System
SinglePDPContext
Operator MMSService
OperatorEmail Service
OperatorWAP
Service
ServiceProvider
WAPService
GGSN
ap1.operator.com
AP
Serviceswitching
Single APNconfigured interminal
PDP Context
Nokia ISN
Accesssettingsscreen
Charging options in the Nokia ICDSystem
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System Volume-based charging
Transferred data volume Per service, not limited to PDP Context Bytes of transferred data
Event-based charging Event (transaction/hit to a specific WAP/HTTP URL) A request/response pair Number of events
Time-based charging Distinguish active/inactive usage time) Subscription (free access during subscription period Seconds of data transfer
Subscription-based charging Free access during content service subscription period May be combined with event-based charging
Nokia Intelligent EDGE Solution
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CPS
Multi-access
Service enablers
Messaging Download andstreaming
Supportingenablers
IP network
Content servicproviders
Applicationservice provide
Internet
CorporateIntranet
Mobile Virtualnetwork operato
Service Core
Session controlDynamic subscriptionManagement andregisters
Intelligentcharging control
Service aware packet connectivity
Radio Network Controller
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Radio network supervision
Radio resourcemanagement
Mobility management
Support open interfaces Iu &Iur
Flexible and modularplatform in Nokia's version
Height 1.8m
Width 0.6mDepth 0.6m
RNC architectureRESOURCE AND SWITCH
MANAGEMENT UNIT
Functions:
AAL2 SWITCHING UNIT
F ti
RADIO RESOURCEMANAGEMENT UNIT
Functions:
MULTIPLEXER UNIT
Functions:- Multiplexing towards SFU
SWITCHING FABRIC UNIT
Functions:- ATM Switching
INTERFACE CONTROL ANDSIGNALLING UNIT
F ti
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DMCU
GTPU
TCP/IP
NEMU OMU
RSMU
RRMU
ICSU
SFU
MXU
A2SU
Functions:- RNC wide functions- ATM switch management- DSP resource managementCharacteristics:- Pentium based- 2n redundant
NIU
NIU
NETWORK INTERFACE UNIT
Functions:- Physical layer functions- ATM layer functions- IU, IUR, IUB
Characteristics:- No redundancy
Functions:- AAL2 minipacket processingCharacteristics:- SN+1 redundant
Functions:- Macrodiversity combining- Outer loop power control- RLC, MAC, PDCP functions- CipheringCharacteristics:- ~6000 MIPS- SN+1 redundant
DATA AND MACRODIVERSITYCOMBINING UNIT
NETWORK ELEMENTMANAGEMENT UNIT
Functions:
- Graphical user interfaces- Key Perfomance Indicators- NMS interfaceCharacteristics:- Pentium based- No redundancy
OPERATION ANDMAINTENANCE UNIT
Functions:
- O&M functions- RNW database- recovery functionsCharacteristics:- Pentium based- 2n redundant
TIMING AND HARDWAREMANAGEMENT BUS UNIT
Functions:- RNC syncronization- HW managementCharacteristics:- TSS3 RNC level- TBUF subrack level- 2n redundant TBU
Functions:- UDP/IP termination- GTP forwardingCharacteristics:- Pentium based- SN+1 redundant
GPRS TUNNELING PROTOCOL UNIT
Functions:- RNC wide radio resourcemanagement functionsCharacteristics:- Pentium based- 2n redundant
Multiplexing towards SFUCharacteristics:- 622 Mbit/s towards SFU- 2n redundant
ATM SwitchingCharacteristics:- 8 switching ports- 5 Gbit/s- 2n redundant
Functions:- L3 protocol functions
- RANAP, RNSAP, NBAP- RRC
Characteristics:
- Pentium based- RN+1 redundant
Radio Network Controller site solution
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1 2
3
4
5
Scalable traffic capacity in 5 steps
48 - 196 Mbit/s nominal capacity Any traffic mix of voice and data Redundant structure
1800mm
600mm
600 + 600mm
RNC Capacities
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High Capacity RNC 1 2 3 4 5
Number of subscribers 73000 130000 186000 240000 300000
Busy Hour Call Attempts 40500 81500 122000 163000 204000
Erlangs 1300 2700 4000 5400 6800
Throughput Mbits/sec 48 85 122 159 196Number of carriers 384 576 768 960 1152
Number of BTSs 128 192 256 320 384
Nokia WCDMA base station solution
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Base station sites: Macrocell sites Microcell sites Picocell sites
What is the difference betweensite cell and sector?
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site, cell and sector?
A site is a physicalcabinet withcarriers/TRXs.
A site may have one or
more cells. Cells that belong to a site
with more than one cellare usually referred to asa sector.
WCDMA- 1 carrier= 5MHzGSM
- 1 TRX ~ 7 trafficchannels
Different frequencies
GSM/WCDMA solutionCo-located sites
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Co-located sites
Nokia WCDMA Tri-mode UltraSite
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GSM+EDGEpart
WCDMApart
mode UltraSiteWCDMA configuration:
1+1+1. 5W
2+2+2. 2W
BTS capacity: max. 10 Mbits/s percabinet
Other features:
Either 12 GSM/EDGE transceiversor
6 GSM/EDGE and 3 WCDMAcarriers
(6 in Release 2)
Nokia WCDMA UltraSite solution
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Indoor
Nokia UltraSiteWCDMA BTS
Optima
Outdoor
Nokia UltraSiteWCDMA BTS
Optima Compact
Outdoor
Nokia UltraSiteWCDMA BTS
Supreme
Indoor Outdoor
Site support
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Site support units cancontain batteries in
case of main failure,transmissionequipment, and more.
Batteries
3rd party transmission
Nokia MetroSite solution
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Nokia MetroHub--- Transmission Node
Battery Backup
Nokia MetroHopper Radio
Nokia FlexiHopper Microwave Radio
Nokia MetroSite EDGEBase Station
900/1800 MHz GSM,EDGE networks
Nokia MetroSiteWCDMA Base Station
2 GHz WCDMAnetworks
Co-locating GSM &WCDMA BTS
Nokia WLAN technology
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Transmission
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Sites are connectedtogether in different
ways to optimisecost, whilst assuringthe best quality andredundancy.
The links can bewire, optical or radiomicrowave links.
RNC
IUIUr
BSC
MSC
A
AXU
Multiplexer eg MetroHub
3G BTS
2G BTS
ATM crossconnect unit
What do base station sites look like?UltraHoppers
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Base station sites can be found in manydifferent places and in different forms.
The sites are connected together indifferent ways.
X-pol. antennas
Site support Base Station
FlexiHopper
UltraHoppers
MetroHoppers
Asynchronous Transfer Mode
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Packet / cell based transmission
48 octets (bytes) of payload, 5 octets of header perpacket (ATM cell)
Examples of physical interfaces:STM-1E1
Ethernet
Management of 3G/UMTS networksIPTGWMAX3G BTSWAP PPG
WTA
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The past decade has seen anincrease in the type and
number of network elements.This has lead to morecomplex networks.
93 9995 97 2002
MSCBSC
BTS
MSCBSC
BTSBTS(D)
MSCBSC
BTSPDHSDHFSC
MSCBSCBTSPDH
SDH
FSCSCP
SMSC
GGSNBG
MSCBSC
BTSPDHSDHFSCSCPSMSCSGSN
GGSNBG
MSCBSC
BTSPDHSDHFSCSCPSMSCSGSN
WAP GWGIOxDSLRAN
BRAN
WLAN
PKI
CPS
NCCProfiler
GGSNBG
MSCBSCBTSPDHSDH
FSCSCP
SMSCSGSN
WAP GWGIO
EDGEUTRAN
HSS
IGSN
Appl
Servers
MMSCWTA server
RANxDSL
Chatserver
Business
Mgmt
Business
Mgmt
ServiceManagement
ServiceManagement
NetworkManagement
NetworkManagement
Network Element
Management
Network Element
Management
Network ElementsNetwork Elements
3GPP is focusing on Network andService Management layers to establish3G operation support standard.
Network element management taskson a single element.
Network management tasks on manyelements at the same time.
Nokia NetAct Solution
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Business
ManagementSystems
ServiceManagementSystems
NetworkManagementSystems
Element
ManagementSystems
Functions of Service management systems:
Take care of subcriber data Provision services and subscribers Collect and rate, bill offered services Create, promote and monitor services
Network management system (NMS): Collect information from the underlying networks
and pre/post-process the raw data Analyse and distribute information Optimise network capacity and quality
Element management systems (EM): EMs are part of the NE (RNC, BTS, AXC,etc.)
functionality Monitor the functioning of the equipment
Collect raw data (performance indicators) Local GUI provided for site engineers Mediate towards the NMS system
MIS
PlanningSystem
BTS
BTS AXC
RNC NE x
NE y
CCB
NE = network element, CCB = customer care andbilling, MIS = management information system
NMS
Nokia NetAct frame structure
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Workflow Manager
Reporter
Administrator
3rd Party Tools
Rating &Charging
Planner
Configurator &Provisioning
Monitor
Service QualityManager
Unified Mediationand Adaptation
Network
Common networktypology
Common WEB GUI
Nokia network management tools
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Ueno 1-1 Shinj uku 1 Shinj uku 2Otemachi1
RNC RNC RNCRNC RNC
Ikebukuro1-1
Tokyoarea- north
Megur o 1-1 T okyo 2-1 Shibya 1-1Tokyo1-1
RNC RNC RNCRNC RNC
Shibya 2-1
Tokyoarea- south
NMS
terminal
printer
Power
Vent.
RNC site17
Marunouchibldg
7F
Marunouchi1-2-3
Chioda-ku
site manager:
SatoAkiyoshi
tel:0904002 8196
NMS site
BTS LocalManagement Tool
BTS site
Monitoring
The monitoring of alarms involve collecting alarms and
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The monitoring of alarms involve collecting alarms andstatistics to identify problems in the network.
Problem detection
Problemidentification Problemhandling
Verification
Radio network planning & development
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Radio AccessNetwork
Radio networkplanning toolNokia TOTEM
3rd party
planningtool
PlanningInterface
Plan management in NMS
PlanRepository
PlanModification
Radionetworkplanning
PlanProvisioning
NMS provides
a Web Site forRNW plans:
l storage
l edit
l download,activate &
rollbackl upload actual
configuration
Intranet
RNW planin XMLformat
RNC
BTS
BTS
BTS
ATMModule
Summary of Nokia network evolution
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Release 3 ('99) Architecture
Application Platforms
UTRAN - WCDMA air interfaceE h d t k f ti lit
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FiberFiber
DXC
MWRTDM Access
RAN Mobility Core
Control Plane
Gateway Plane
2GSGSN
3GSGSN GGSN
Application Platforms
Internet GatewayMultimedia Messaging
e-mailGame platform
NokiaCharging
Center
NokiaChargingGateway
RNC
BSC
HLR
3GMSC
NMS
Internet
PSTN
GSM BTS
TripleModeBTS
WCDMA BTS
Enhanced core network functionalityNew service architecture
Bearer Independent Call Control (Rel. 4)Rel.99UTRAN WCDMA air interface
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UTRAN - WCDMA air interfaceEnhanced core network functionalityNew service architecture
Rel.4Separation of control plane from user plane, simpler and more efficientStatistical multiplexing gain and convergence with PS core as ultimate aimMore efficient transmission reduces costs this allowing more complex services to be offEvolutionary phase towards Release 5 which in turn will offer even more advanced serviGERAN implementation
3GPP Release 5 architectureRel.99UTRAN WCDMA air interface
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UTRAN - WCDMA air interfaceEnhanced core network functionalityNew service architecture
Rel.4Separation of control plane from user plane, simpler and more efficientStatistical multiplexing gain and convergence with PS core as ultimate aimMore efficient transmission reduces costs this allowing more complex servicesEvolutionary phase towards Release 5 which in turn will offer even more advancGERAN implementation
Rel.5IP Multimedia SubsystemHigh Speed Downlink Packet AccessIP transport in the core networkIP transport in UTRANEnd to end IP services
Simpler service integration due to simplified protocol stacksEasy integration and enabling of instant messaging,precence information and real time conversation services
Review 1/9
AbisGSM/EDGEGb
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Gn GINokia
2G/3G
GGSN
Nokia
BSC
Nokia2G
SGSN
Gn
TC-
SM
Ater
PSTNPSTNPSTN
InternetInternetInternet
AbisGSM/EDGEBTS
A
MSC
MGW
3G-SGSNIU-PS
IU-CS
RNC
Node B /WCDMA BTS
IUr
IUbUu
Review (2/9)
2. Which of the following information is not kept on the SIM?
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a) IMSI number
b) SMS messages
c) Network information (that is, location area)
d) Time and date
3. Which of the following alternatives include radio accessspecifications (more than one)?
a) GSM
b) IP
c) EDGE
d) UTRAN
Review (3/9)
4. Which of the following alternatives are NOT functions of
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the base station?
a) Speech codingb) Transmission of signal
c) Modulation
d) Charging datageneration
5. TRUE orFALSE?Batteries are used at a site as an alternative source of
energy for the BTS in case of a power failure.
Review (4/9)
6 Wh t fi ti i thi ?
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6. What configuration is this?
a) A distant starconfiguration
b) A tail configuration
c) A loop configuration
d) A chain configuration
e) None of the above
Review (5/9)
7. If we say that the BTS is a 2+2+2, what does it mean?
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a) There are 3 locations where we can find 2 sites.
b) A single site is divided into 3 cells, each with 2TRXs/carriers.c) A single site is divided into 2 cells, each with 3TRXs/carriers.d) A TRX/carrier is divided into 3 time slots.
8. The Iur interface is used between two RNCs. What is thepurpose of this interface?
a) There is no use for this interface.
b) It is used for soft handovers.c) It is used to transfer software files.d) It is used when a RNC has a hardware failure.
Review (6/9)
9 Which of the following is NOT a function of the RNC?
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9. Which of the following is NOT a function of the RNC?
a) Management of radio channels
b) Power controlc) Handover controld) Charging
10. Which of the following are NOT elements of the corenetwork?
a) MSCb) HLR
c) GGSNd) BTS
Review (7/9)
11. In which elements is the coding/decoding ofspeech
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g g pperformed?
a) Mobile and BTSb) Mobile and RNCc) Mobile and Multimedia Gateway (MGW)d) Mobile and HLR
12. Which of the following are functions of the 3G-SGSN?
a) Protocol conversion between RAN and IPb) Charging information generation
c) Radio channel allocationd) Authentication of a mobile
Review (8/9)
13 What is the principle aim of IP Telephony?
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13. What is the principle aim ofIP Telephony?a) To fully use a circuit switched connection
b) To fully use an IP connectionc) To support video servicesd) None of the above
14. Which of the following sentences are false?
a) MGW for 3G-MSC contains transcoding function.b) 2G-SGSN can be upgraded to 3G-SGSN.c) The existing MSC, HLR will support 3G by SW
upgraded) GGSN will be compatible to both 2G and 3G
GPRS network elements by minor SW and HWupgrade.
Review (9/9)
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Speech transcoding, signalling conversion, ATM-TDMconversion
15. What are the main functions of MGW for 3G-MSC?