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GSM
( Global System for Mobile communication ) by
Uke Kurniawan Usman
NGN and New Communication Services Short Course Hotel Horison, Bandung, June 26-27 June, 2003
Telematics Research Group
History GSM
GSM (Global System for Mobile Communication) 1 1982 "Group Special Mobile" is created within CEPT 2.1986 A Permanent Nucleus is set up
3.1987 Main radio transmission techniques are chosen, based on prototype evaluation (1986)
4.1989 GSM becomes an ETSI technical committee
5.1990 The phase 1 GSM900 specification (drafted 1987 - 1990 ) are frozen, DCS1800 adaptation start
6.1991 First system are running ( Telecom 91 exhibition,…) DCS1800 specification are frozen
7. 1992 All major European GSM900 operators begin commercial
operations
SPESIFIKASI AIR INTERFACE SPESIFIKASI AIR INTERFACE
Band frekuensi : Uplink 890 MHz – 915 MHz
Downlink 935 MHz – 960 MHz
Duplex spacing : 45 MHz Carrier spacing : 200 MHz
Modulasi : GMSK
Transmision Rate : 270 Kbps
Metode Akses : FDMA – TDMA
Basic Duplexing: FDD
Speech Coder : RPE LPC 13 Kbps - Channel Coding
- Interleaving
- Frequency Hopping
- Adaptive equalization
Frequency used
ALOKASI KANAL GSM UNTUK ALOKASI KANAL GSM UNTUK
OPERATOR DI INDONESIA OPERATOR DI INDONESIA
SATELINDO : 890 – 900 MHz (10 MHz)
TELKOMSEL : 900 – 907 MHz (7.5 MHz)
EXCELCOMINDO : 907.5 – 915 MHz (7.5 MHz)
Short Message Service
Short Message Services (SMS) adalah Teleservis GSM
Dapat dikirimkan dengan size :
160 karakter (SMS-PP)
93 karakter (SMS-CB)
SMS terpisah dengan voices services
SMS dapat dikirimkan dari terima pada saat bicara
Max 160 Karakter
DEST MSISDN-B
GSM Architecture
HLR/AuC MSC-VLR
Packet networkPSTN
Packet network NetworkSS7
SMS-GMSC Gr
Gs
EIR BTS BSC
Um A
BTS BSC Um
A
MSC/GMSC
Cell Planning (frequency reuse) Omni Cell
Pattern
Cell Planning (frequency reuse)
4 site 3 cell Re-use Pattern
DualBand ( GSM900 + DCS1800 )
Macro Cell GSM1800 Radio Coverage Layer 4 Umbrella Cell GSM900 Radio Coverage Layer 6 Macro Cell GSM900 Radio Coverage Layer 5
Micro Cell GSM900
Radio Coverage Layer 3
Micro Cell GSM1800
Radio Coverage Layer 2
Pico Cell GSM1800
Radio Coverage
Layer 1
Konfigurasi DualBand System
Sistem dualband terpasang dengan mengopersikan atau menambahkan perangkat hardware cabinet BTS DCS 1800 pada sistem GSM 900 yang sudah ada.
Jaringan yang bekerja pada GSM900 dan DCS 1800, dianggap sebagai suatu
jaringan dengan PLMN tunggal.
Implementasi jaringan dualband ini dapat diterapkan dalam beberapa kombinasi antara lain :
1. Satu BSC dengan satu jenis band 2. Satu BSC dengan dua jenis band
3. Satu BTS dengan dua jenis band
MSC/HLROMC
BSC
GSM900
T BTS DCS 1800 BTS
Integrated
GSM900/DCS1800 BTS
GSM900 BTS DCS 1800
BTS
Co-Sited BTS
OMC
Hardware DualBand
Spesifikasi MSC DualBand :
MSC dapat mendukung
peralatan BSS dari vendor yang berbeda untuk setiap band
frekuensi. Agar dualband mampu bekerja dengan baik, maka MSC perlu memiliki kemampuan untuk menangani elemen informasi classmark 3 (CM3 dikirim oleh MS dualband ke MSC berisi informasi
kemampuan MS)
Spesifikasi MS Dualband &
Mekanisme Penanganan MS DualBand Dalam Jaringan:
Suatu MS dapat beroperasi pada jaringan dualband dengan cara antara lain, MS hanya mendukung satu band atau MS dapat mendukung lebih dari satu band tapi hanya dapat
berfungsi pada satu band
Mekanisme Dualband
Mekanisme penanganan MS dualband tersebut dapat dijelaskan sebagai berikut :
1. MS akan dipegang oleh jaringan DCS 1800 layer pada dua kondisi idle mode dan dedicated mode selama tersedia kanal dalam cakupan radio DCS 1800
2. MS dapat ditangani dan membangun panggilan pada sel DCS 1800.
3. MS yang berada pada layer GSM 900 dapat ditangani ke
layer bawah (DCS 1800) jika memungkinkan.
4. MS yang berada pada layer DCS
1800 akan dipindahkan
pemegangan kanalnya ke layer atas (GSM 900 ) jika hanya diperlukan.
SB900
DB
1 2
DB
DB
4 3
GSM900
DCS1800
GPRS Architecture
Topologi GPRS Network
Local area network
Server
Router
Local area network
Server
Router
Corporate 2 Corporate 1
Intra-PLMN backbone network (IP based) Serving GPRS
Support Node (SGSN)
Gateway GPRS Support Node (GGSN)
GPRS
INFRASTRUCTURE
HLR/AuC MSC
BTS BSC
PacketnetworkPSTN
Packet network NetworkSS7
Packet network Datanetwork (Internet)
Packet network
Inter-PLMN Backbone network
Border
Gateway (BG)
Gb
Gr Gd
Gi.IP Firewall
Firewall Um
SMS-GMSC
Gr Gd
Gs
Gs
Gp
Gn
Gn
EIR MAP-F
A
Gc
GPRS Network from the Internet
L o c a l a r e a n e tw o r k
R o u t e r C o r p o r a t e 2
L o c a l a r e a n e tw o r k
R o u t e r
C o r p o r a t e 1
P a c k e t n e t w o r k
D a tan e tw o r k(In te r n e t) G P R S
S U B N E T W O R K S U B N E T W O R K 1 5 5 .2 2 2 .3 3 .X X X
S U B N E T W O R K 1 3 1 .4 4 .1 5 .X X X S U B N E T W O R K
1 9 1 .2 0 0 . 4 4 .X X X
H O S T
1 9 1 .2 0 0 .4 4 .2 1
H O S T 1 3 1 .4 4 .1 5 .3 H O S T
1 5 5 .2 2 2 .3 3 .5 5
" R o u te r "
Growth up
Evolusi Cellular
Global System for Mobile Communication
(GSM)
9.6 kbps
High Speed Circuit- Switched
Data (HSCSD) 14.4 – 56.7 kbps
General Packet
Radio Services
(GPRS) 115 kbps
Enhances Data Rate for Global Evolution (EDGE) 384 kbps
Universal Mobile Telecom.
System (UMTS) 2 Mbps
Code Division Multiple
Access (CDMA)
9.6 – 14.4 kbps 64 kbps 144 - 614 kbps 1.5 Mbps
CDMA 2000 W-CDMA 2+ Mbps
Intermediate standards
Time Division Multiple
Access (TDMA)
Enhances Data Rate for Global Evolution (EDGE)
Universal Wireless
Comm.
System (UWCS)
384 kbps 2 Mbps
G2 G2.5 G3
MMS Network Elements
MMS CALL FLOW
MMS Architectural Elements
Perangkat Arsitektur MMS
MMS Relay MMS User
Agent
MMS Server
MMS User Agent
User Databases e.g. profiles, subscription, HLR
External Server
Wired EMail Client 2G Mobile
Network A
3G Mobile Network A
MMSE
Mobile Network B
Roaming MMS User Agent Message
store
Internet / IP Network
MMS VAS Applications
Multimedia Message Service
Konsep MMS
Cellular Network
Cellular Network
Fixed Network
Internet
MMSE
Protocol Framework
Lower Layer A
MMS User Agent
MM1 Transfer
Protocol
Lower Layer B
e.g. TCP / UDP External
Server MMS capable
UE / MS
MM Service Environment
Lower Layer B
e.g. TCP / UDP Lower Layer
A
MM3 Transfer Protocol MMS Relay/Server
MM1 MM3
MM3 Transfer Protocol MM1
Transfer Protocol
protocol elements necessary in the terminal protocol elements necessary in the MMSE
additional protocol elements necessary to include external servers
Protocol framework to provide MMS
Interworking of different MMSEs
Interworking MMS
MM4 MM1
MMS Relay/
Server A MMS User
Agent A
MMSE Service Provider A
MMS Relay/
Server B
MMS User Agent
B MMSE
Service Provider B
SMTP Radio
Network A
Radio Network B
MM1
MMS Reference Architecture
MM3
...
Relay
MMS User Agent A
External Server #1 (e.g. E-Mail)
External Server #2 (e.g. Fax)
External Server #N
“Foreign”
MMS Relay/Server
MMS User Agent B
Server
MM1
MM1
MM4
MMS Relay/Server
MM2
External Server #3 (e.g. UMS)
MM6 MM5
MMS User Databases
HLR MMS VAS
Applications
MM7
MMS interaction with 2G/3G Voice Mailbox based on VPIM Contoh 1:
MMS Relay/
Server
2G/3G voice mailbox
2G/3G Radio Network SMTP
(VPIM profile)
today’s real-time over-the-air
access of 2G/3G voice mailbox
MMS interaction with 2G/3G Voice Mailbox based on HTTP
Contoh 2:
MMS Relay/
Server
2G/3G voice mailbox
2G/3G Radio Network today’s real-time over-the-air
access of 2G/3G voice mailbox
HTTP
SMTP
(VPIM
profile)
MMS Interaction with Internet E-Mail messaging Contoh 3:
SMTP or POP3/
IMAP4
E-Mail Server
Message Store Forwarding Mail
Transfer Agent
MMS Relay/
Server
SMTP
MMS interaction with SMSC
Contoh 4:
MMS Relay/
Server
3G TR 23.039
SMSC
2G Radio
Network
MMS integration with UMS
Contoh 5 :
3G TR 23.039
H.323T.30 MMS
Relay/
Server
SMSC
MMS UA
Unified Msg Store (email, fax, vmail)
Voice mail store 2G SMS client
PC/Web SMTP
IMAP HTTP
Voice Mail Access Server
Phone call
Compressed voice VPIM/
TIFF/
SMTP H.323/T.37 Gateway UMS Server/
Email server
FAX SMTP
IMAP
Unified Messaging System
Protocol Framework applied to WAP implementation of MMS
Example for Applied to WAP
Wireless Services Interim Layers Transfer Protocol
Wireless Services Interim Layers
IP TCP
IP TCP HTTP
MMS User Agent
Gateway WAP MMS
Relay/Server
MMS
Comm MM1 Transfer Protocol Payload
WAP WSP HTTP
MMS App Svcs
MMS UI
Messaging Application Framework
MMS Comm MMS App Svcs
Protocol Framework applied to WAP implementation of MMS
Contoh 6:
MMS
Relay/Server WAP
Gateway
Wireless Network
Internet /IP-network
HTTP Payload WSP
Payload
MMS User
Agent
Architectural example of IP Based Implementation for 3GPP MMS
Contoh 7:
Terminal
Internet
MMS Relay/Server
Intranet (Enterprize)
E-mail Server
IP Based Implementation
SMTP POP3 IMAP4
HTTP etc.
SMTP POP3 IMAP4 HTTP
etc.
SMTP POP3 IMAP4
HTTP etc.
IP Based Gateway
SMTP, POP3, IMAP4, HTTP, etc.
Protocol Framework Definition for IP Based Implementation in 3GPP MMS
Example for Applied to IP
MMS Comm
MM1 Transfer Protocol Payload MMS
App Svcs MMS
UI
Messaging Application Framework
MMS Comm MMS App Svcs
IP (Wireless)
Wireless Profiled TCP
Transfer Protocol
IP
(Wireless) IP
TCP
IP TCP SMTP, POP, IMAP, HTTP
MMS User Agent
IP Based
Gateway MMS
Relay/Server Wireless
Profiled TCP
