mbo telecom/ict

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MBO TELECOM/ICT
Mobiele netwerken
1
Mobiele Netwerken
Siemens Nederland N.V. 2001
Agenda
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Markt Situatie
9.30-10.00
GSM
10.00-11.15
WAP
11.15-11.45
GPRS
11.45-12.15
UMTS
13.00-14.30
Metingen in mobiele netwerken
14.45-15.45
Afsluiting
15.45-16.00
Mobiele Netwerken
Siemens Nederland N.V. 2001
Introductie
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Peter Luns, Ing.
System Engineer, GSM Internationale Projecten
Siemens Nederland NV
Email : [email protected]
Mobile : +31 6 1296 2946
Phone : +31 70 333 1925
3
Mobiele Netwerken
Siemens Nederland N.V. 2001
Agenda
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•
GSM netwerk ontwerp
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4
Historie van GSM
GSM Techniek
Globaal overzicht van een GSM netwerk
Voorbeeld ontwerp
Mobiele Netwerken
Siemens Nederland N.V. 2001
Historie van GSM (1/4)
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1ste Generatie netwerken
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Analoge interface
Beperkte capaciteit (Bandbreedte)
Weinig services
Onbetrouwbare kwaliteit
Geen connectivity
NMT 450
AMPS
1981
1982
Nordic voorstel aan CEPT
1984
900Mhz Band gereserveerd voor GSM
1985
TACS 900
NMT 900
2de Generatie netwerken
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Kwaliteit in bewoonde regio's
Grotere capaciteit
Services beschikbaar
Aanvang Multimedia
Connectivity (Roaming)
D-AMPS, CDMA-ONE, PDC
D-AMPS 1800, CDMA-ONE 1900 GSM 1800, 1900
3de Generatie netwerken
5
Mobiele Netwerken
Location Based Services
Full Multimedia
....
1987
15 Operators ondertekenen MoU
1989
ETSI opgericht.
1990
GSM 900
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1986
Phase 1
1991
1992
1995
Phase 2
Final GSM specificaties + services
1996
Phase 2+
GSM Specs Release 96
GSM Specs Release 97
UMTS, CDMA-2000
GSM Specs Release 98
Siemens Nederland N.V. 2001
Historie van GSM (2/4)
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6
Mobiele Netwerken
Siemens Nederland N.V. 2001
Historie van GSM (3/4)
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•
Migratie van analoge naar digitale netwerken
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Hogere capaciteit van het netwerk
S/N
Betere transmissie kwaliteit
signal
quality
Encryptie mogelijk op digitale data
Data stroom is te herstellen
Compressie van spraak en data mogelijk
analog signal
digital signal
Distance from transmitter
7
Mobiele Netwerken
Siemens Nederland N.V. 2001
r
Historie van GSM (4/4)
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2G Digital Cellular Networks
GSM:
Since 1992
Freq’s : 900, 1800, 1900
Usage : Global
Approx. 140 countries
Approx. 650M users
IS-136:
Digital AMPS
Since 1991/92
Freq’s : 800, 1900
Usage: N/Z-Amerika
Approx. 15M D-AMPS
Approx. 60M AMPS
8
Mobiele Netwerken
PDC:
Since 1993/94
Freq’s : 800, 1500
Usage : Japan
Appox. 43M users
IS-95:
CDMA
Sincs 1995
Freq’s : 800, 1900
Usage : Amerika, S. Korea
Approx. 35M users
Siemens Nederland N.V. 2001
Agenda
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•
GSM netwerk ontwerp
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9
Historie van GSM
GSM Techniek
Globaal overzicht van een GSM netwerk
Voorbeeld ontwerp
Mobiele Netwerken
Siemens Nederland N.V. 2001
GSM Techniek (1/8)
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HLR
BTS
BSC
VLR
EIR
AuC
MSC
GMSC
BSC
TE
BSC
10
Mobiele Netwerken
PSTN
Siemens Nederland N.V. 2001
GSM Techniek (2/8)
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PLMN Service Area
MSC/VLR Service Area
Location Service Area
BTS Cell
11
Mobiele Netwerken
Siemens Nederland N.V. 2001
GSM Techniek (3/8)
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GSM 900 (124 channels)
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*
Downlink 935 - 960 MHz
GSM1800 (374 channels)
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Uplink 1710 -1785 MHz
Downlink 1805 -1880 MHz
GSM1900 (299 channels)
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Uplink 890 - 915 MHz
Uplink 1850 -1910 MHz
Mobiele Netwerken
Downlink 1930 -1990 MHz
Siemens Nederland N.V. 2001
GSM Techniek (4/8)
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13
Mobiele Netwerken
Siemens Nederland N.V. 2001
GSM Techniek (5/8)
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Carrier 0
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Carrier 1
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2
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6
7
Carrier 2
Frame bestaat uit 8 Timeslots
Timeslot = 156.25 bits = 0.577 msec
1 bit = 3.7 µsec
…
7
TB
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Mobiele Netwerken
0
1
2
Information
3
4
TB
5
6
7
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GP
Siemens Nederland N.V. 2001
GSM Techniek (6/8)
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15
Mobiele Netwerken
Siemens Nederland N.V. 2001
GSM Techniek (7/8)
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16
Mobiele Netwerken
Siemens Nederland N.V. 2001
GSM Techniek (8/8)
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17
Mobiele Netwerken
Siemens Nederland N.V. 2001
GSM Techniek
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•
GSM netwerk ontwerp
*
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18
Historie van GSM
GSM Techniek
Globaal overzicht van een GSM netwerk
Voorbeeld ontwerp
Mobiele Netwerken
Siemens Nederland N.V. 2001
Globaal overzicht GSM netwerk
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Base station
subsystem BSS
Switching subsystem SSS
AC
HLR
BTS
IN
Other networks
SMP
VLR
EIR
SCP
MSC/ SSP
BSC
PLMN
Operation + maintenance subsystem
ABC
AC
BSC
BTS
CBS
19
CBS
Administration and Billing Center
Authentication Center
Base Station Controller
Base Tranceiver Station
Cell Broadcast Service
Mobiele Netwerken
ABC
EIR
HLR
MSC
OAS
SCP
ISDN
Data
networks
OMS
Value Added Services
PSTN
VMS
OAS
Equipment Identification Register
Home Location Register
Mobile Services Switching Center
Operator Assistance Service
Service Control Point
SMP
SMS
SSP
VLR
VMS
SMS
Service Management Point
Short Message Service
Service Switching Point
Visitor Location Register
Voice Mail Service
Siemens Nederland N.V. 2001
Siemens Switching System (1/5)
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•
Mobile Switching Center
call verwerkings functies
(gelijkend op fixed network exchange)
• Set-up van signalering / gesprekken
•Connection pad selectie
•Supplementary service verwerking
• Call monitoring
• Traffic monitoring en meetingen
• Overload beveiliging
• Charging
• Priority control (bijv. 112)
• Ondersteuning van O & M functies
20
Mobiele Netwerken
mobile communicatie specifieke functies
• Toegang op abonnee & ME databases
• Processing van mobiele services
• Mobile management, bijv. paging, HOV,
LR & LUP,...
• Interworking Functie voor data services
• Abonnee informatie, e.g. instructie
berichten
Siemens Nederland N.V. 2001
Siemens Switching System (2/5)
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21
Mobiele Netwerken
Siemens Nederland N.V. 2001
Siemens Switching System (3/5)
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AuC
Authentication Center
HLR
Home Location Register
Taken:
• Centrale opslag/management van abonnee data
• Aanleveren van data aan VLR
• Route information aan MTC
• Geassiocieerd met AuC
Tasks:
• Security data storage (Ki)
• Generatie van triples (VLR verzoek)
• Geassocieerd met HLR
Data / algorithmen:
• Ki, IMSI, A3, A8
Abonnee data:
• Semipermanente data: MSISDN, IMSI, abonnee
services, restricties,...
• Tijdelijke abonnee informatie VLR adres,
LMSI, MSRN, SMS flaggen,...
22
Mobiele Netwerken
Siemens Nederland N.V. 2001
Siemens Switching System (4/5)
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VLR
Visitor Location Register
Tasks:
• Abonnee management in MSC area
• Authenticatie coordinatie
• Geassocieerd met MSC
Abonnee data:
• Gedeeltelijke HLR data (MSISDN, IMSI,
abonnee services, restricties,..)
• Tijdelijke abonnee informatie (LMSI, TMSI, LAI,
IMSI attach/detach, MSRN, HON, triplets,...)
23
Mobiele Netwerken
Siemens Nederland N.V. 2001
Siemens Switching System (5/5)
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CEIR
Common EIR
site: Dublin
EIR
Tasks:
• Central, worldwide ME register
• Worldwide ME theft prevention
Equipment Identity Register
Tasks:
• Storage of ME data (IMEI)
• Monitoring of IMEI: "white", "gray", "black" list
ME data:
• IMEI = International Mobile Equipment Identity
= Type Approval Code TAC
+ Final Assembly Code FAC (manufacture site)
+ Serial Number SNR (device serial number)
+ Software Version Number SVR
24
Mobiele Netwerken
Siemens Nederland N.V. 2001
Service Nodes
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IN Features
Number Translation Services
Freephone
Split / Reversed Charging
Premium Rate / Info Service (Weather,
Sports, Events, Consulting...)
Ordering / Booking Services
(Warehouse, Travel, Ticketing...)
Call Center Service
Universal Number
Group Hunting
Virtual Private Networks
Media Enhancements
Voice / Fax Messaging
Interactive Voice Response
Voice Activated Dialling
e-mail, SMS
Unified Messaging
Advertisement
Ad financed Calling
Ad sponsored Service
Applications
Personal Services
Personal Number /
One Number Service
Personal Communication Service
Friends & Family
Alternate Billing
Screening Services /Control of Use Prepaid Service
Account Card Calling
Credit Card Calling
Automatic Alternative Billing
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Mobiele Netwerken
Cost Optimization
International Automatic Call Back
Least Cost Routing
Equal Access
Home Zone Billing
Mobile Local Call
Number Portability
Local Number Portability
Service Number Portability
Provider Number Portability
Voting / Entertainment
Televoting /Mass Calling
Games
Opinion Polls
Others
Emergency, Wake up Call,
Reminder Service...
Siemens Nederland N.V. 2001
TRAU
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Optimaal gebruik van PCM verbindingen
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TRAU geplaatst bij MSC
BSC fungeert als controller en concentrator
BSC
MSC
TRAU
naar BTSs
4 TCH’s
16 kbit/s
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Mobiele Netwerken
4 TCH’s
64 kbit/s
4 TCH’s
64 kbit/s
Siemens Nederland N.V. 2001
BSC
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Management van:
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Transmissie netwerk
“Channels” op de radio interface
Base Transceiver Station
Radio Netwerk
Informatie van/naar OMC
BSS database
Mobiele Netwerken
Siemens Nederland N.V. 2001
BTS (1/2)
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Pico BTS
BS-40
BS-240 / 240XL
Micro BTS
28
Mobiele Netwerken
Siemens Nederland N.V. 2001
BTS (2/2)
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Abis
parity
bits
convolutional
encoding
interleaving
BTS
channel coding
Um
ciphering
burst blocks
formation
HF generation
burst
multiplexing
modulation
+
• Frequency hopping
• Synchronization
(time and frequency)
• Monitoring and optimization
of transmission quality
• Power Control PC
• Timing Advance TA
transmit
modulation
receive
29
Mobiele Netwerken
Siemens Nederland N.V. 2001
Operation & Maintenance Center (1/3)
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EIR
MSC/VLR
HLR/
AuC
SSS
MSC/VLR
WS
OMS
TRAU
• Subscriber and equipment data management
e.g. clearing services, bills
• Network operation, configuration and management
BSC
BSS
BTS
• Error detection and correction
• Security management
• Performance management
•Test management
30
Mobiele Netwerken
Siemens Nederland N.V. 2001
Operation & Maintenance Center (2/3)
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OMC-B
OMC-S
Radio Commander
MSC
VLR
BSC
BSC
SSS
BSS
CG : Charging Gateway
DNS : Domain name server
31
Mobiele Netwerken
Switch Commander
LMT
MSC
VLR
EIR
HLR
AC
CT
Siemens Nederland N.V. 2001
Operation & Maintenance Center (3/3)
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Applications
Service Management
Tools
Network Status Display
Service
Management
Performance Management
Network
Planning
Tools
Statistics
Fault Management
Performance
Management
e.g. Metrica
Mobile Integrator
(based on TeMIP)
Network
Management
SS7 Management
Event & Log Management
Security
Radio
Commander
Backup / Restore
HLR
Redundancy Concept
Documentation, Help ...
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Switch
Commander
BSS
Mobiele Netwerken
RNC
NodeB
IN
Commander
GSN
MSC
UMSC
TMOS
EM of
other NE
Ericsson
NE
other NE
Element
Management
CSC
SMP
SCP
(e.g. ransport)
Siemens Nederland N.V. 2001
Network
Elements
Mobile Station (1/2)
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+
SIM
Mobile Equipment
• Frequentie band
• Power klasse:
• 900Mhz = 2W
• 1800Mhz = 1W
• 1900Mhz = 0.6W
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Mobiele Netwerken
• IMSI = Subscriber Identification nummer
Mobile Country Code + Mobile Network Code + Mobile Subscriber Id Number
•Network data (preferred / forbidden)
•Geheime Sleutels
•SMS Berichten
•Telefoon boek
Siemens Nederland N.V. 2001
Mobile Station (2/2)
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
reverse speech
conversion
speech
conversion
• channel decoding
• de-interleaving
• reformation
• channel coding
• interleaving
• burst block formation
ciphering
de-ciphering
• filtering
• amplification
• de-modulation
• HF generation
• modulation
• amplification
Mobile Equipment ME
Subscriber Identity Module SIM
34
Mobiele Netwerken
Siemens Nederland N.V. 2001
Agenda
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•
GSM netwerk ontwerp
*
*
*
*
35
History van GSM
GSM Techniek
Globaal overzicht van een GSM netwerk
Voorbeeld ontwerp
Mobiele Netwerken
Siemens Nederland N.V. 2001
Ontwerp parameters
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Aantal gebruikers
Wat voor dekking
Transmissie eisen / mogelijkheden
Verkeers matrix
Gewenste services
Groeiscenario
…
Mobiele Netwerken
Siemens Nederland N.V. 2001
Globaal netwerk ontwerp
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Operation and Maintenance Center
SN
BTS
BTS
VMS
SN
IN mgmt
SMS
SMS
SC Cmd
IN
RC Cmd
BTS
LMT
BTS
VMS
MSC
RIG
CBC
BP
PSTN
PDN
37
Mobiele Netwerken
MSC
TRAU
BSC
Sonet
BTS
BTS
HRL/VLR/AuC/EIR
BM
BTS
GGSN
SGSN
Siemens Nederland N.V. 2001
Capaciteit en fasering
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Planning
Launch date
Tobago
BSS Capacity
BTS sites
BSC sites
TRAU sites
MSC/VLR
Trinidad
SSS Core Capacity
BSS Capacity
BTS sites
BSC sites
TRAU sites
MSC/VLR
38
Mobiele Netwerken
Phase 1
01/04/2002
Phase 2
31/12/2002
Phase 3
31/12/2002
20,000
10
0
0
0
20,000
10
0
0
0
30,000
16
0
0
0
100,000
0
0
1
1
1
200,000
100,000
66
2
2
2
300,000
270,000
104
3
3
3
Siemens Nederland N.V. 2001
Initieel Radioplan (1/2)
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39
Mobiele Netwerken
Siemens Nederland N.V. 2001
Initieel Radioplan (2/2)
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40
Mobiele Netwerken
Siemens Nederland N.V. 2001