GSM. (Global System for Mobile communication) by. Uke Kurniawan Usman. Telematics Research Group

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1 GSM (Global System for Mobile communication) by Uke Kurniawan Usman NGN and New Communication Services Short Course Hotel Horison, Bandung, June June, 2003 Telematics Research Group Your problem solution

2 History GSM GSM (Global System for Mobile Communication) "Group Special Mobile" is created within CEPT A Permanent Nucleus is set up Main radio transmission techniques are chosen, based on prototype evaluation (1986) GSM becomes an ETSI technical committee The phase 1 GSM900 specification (drafted ) are frozen, DCS1800 adaptation start First system are running ( Telecom 91 exhibition, ) DCS1800 specification are frozen All major European GSM900 operators begin commercial operations

3 SPESIFIKASI AIR INTERFACE Band frekuensi Duplex spacing Carrier spacing Modulasi Transmision Rate Metode Akses Basic Duplexing: FDD Speech Coder : Uplink 890 MHz 915 MHz Downlink 935 MHz 960 MHz : 45 MHz : 200 MHz : GMSK : 270 Kbps : FDMA TDMA : RPE LPC 13 Kbps - Channel Coding - Interleaving - Frequency Hopping - Adaptive equalization

4 Frequency used

5 ALOKASI KANAL GSM UNTUK OPERATOR DI INDONESIA SATELINDO TELKOMSEL EXCELCOMINDO : MHz (10 MHz) : MHz (7.5 MHz) : MHz (7.5 MHz)

6 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 DEST MSISDN-B Max 160 Karakter

7 GSM Architecture MSC/GMSC Um BTS BSC A Um BTS BSC A Packet network PSTN MSC-VLR Gs Gr HLR/AuC SMS-GMSC Packet SS7 network Network EIR

8 Cell Planning (frequency reuse) Omni Cell Pattern

9 Cell Planning (frequency reuse) 4 site 3 cell Re-use Pattern

10 DualBand ( GSM900 + DCS1800 ) Umbrella Cell GSM900 Radio Coverage Layer 6 Macro Cell GSM900 Radio Coverage Layer 5 Macro Cell GSM1800 Radio Coverage Layer 4 Micro Cell GSM900 Radio Coverage Layer 3 Micro Cell GSM1800 Radio Coverage Layer 2 Pico Cell GSM1800 Radio Coverage Layer 1

11 Konfigurasi DualBand System Sistem dualband terpasang dengan mengopersikan atau menambahkan perangkat hardware cabinet BTS DCS 1800 pada sistem GSM 900 yang sudah ada. DCS 1800 BTS GSM900 BTS 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 OMC 3. Satu BTS dengan dua jenis band MSC/HLR BSC GSM900 T BTS Co-Sited BTS DCS 1800 BTS Integrated GSM900/DCS1800 BTS OMC

12 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

13 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 MS dapat ditangani dan membangun panggilan pada sel DCS 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 DCS GSM900 DB 3 DB 4

14 Topologi GPRS Network Um GPRS Architecture BTS BSC A Packet network PSTN Serving GPRS Support Node (SGSN) Border Gateway (BG) Inter-PLMN Packet Backbone network network Gp Firewall Gb Gn Intra-PLMN backbone network (IP based) Gn Gateway GPRS Support Node (GGSN) Gr Gd Gs MSC Gs GPRS INFRASTRUCTURE Gc Gr Packet SS7 network Network MAP-F Firewall Data Packet network (Internet) Gi.IP HLR/AuC EIR Corporate 1 Server Router SMS-GMSC Gd Local area network Corporate 2 Server Router Local area network

15 GPRS Network from the Internet H O S 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 X X X " R o u t e r " S U B N E T W O R K X X X C o r p o r a t e 1 R o u t e r P a c k e t D a t a n e t w o r k n e t w o r k ( I n t e r n e t ) R o u t e r S U B N E T W O R K X X X C o r p o r a t e 2 H O S T L o c a l a r e a n e t w o r k L o c a l a r e a n e t w o r k H O S T

16 Growth up Evolusi Cellular G2 G2.5 G3 Global System for Mobile Communication (GSM) High Speed Circuit- Switched Data (HSCSD) General Packet Radio Services (GPRS) Enhances Data Rate for Global Evolution (EDGE) Universal Mobile Telecom. System (UMTS) kbps 115 kbps 384 kbps 2 Mbps Code Division Multiple Access (CDMA) Intermediate standards CDMA 2000 W-CDMA kbps 64 kbps kbps 1.5 Mbps 2+ Mbps Time Division Multiple Access (TDMA) 9.6 kbps Enhances Data Rate for Global Evolution (EDGE) Universal Wireless Comm. System (UWCS) 384 kbps 2 Mbps

17 Network Elements

18 CALL FLOW

19 Architectural Elements Perangkat Arsitektur User Agent 2G Mobile Network A Message store Server Relay User Databases e.g. profiles, subscription, HLR VAS Applications External Server Internet / IP Network E 3G Mobile Network A User Agent Mobile Network B Wired Client Roaming User Agent

20 Multimedia Message Service Konsep Fixed Network Cellular Network Internet Cellular Network E

21 Protocol Framework Protocol framework to provide capable UE / MS MM Service Environment User Agent Relay/Server External Server MM1 Transfer Protocol MM1 Transfer Protocol MM3 Transfer Protocol e.g. TCP / UDP MM3 Transfer Protocol e.g. TCP / UDP Lower Layer A Lower Layer A Lower Layer B Lower Layer B MM1 MM3 protocol elements necessary in the terminal protocol elements necessary in the E additional protocol elements necessary to include external servers

22 Interworking of different Es Interworking User Agent A E Service Provider A E Service Provider B User Agent B Radio Network A Radio Network B MM1 Relay/ Server A MM4 SMTP Relay/ Server B MM1

23 Reference Architecture User Databases HLR VAS Applications MM6 MM5 MM7 User Agent A MM1 Relay Relay/Server MM2 Server MM3 Foreign Relay/Server MM1 MM4 External Server #1 (e.g. ) External Server #2 (e.g. Fax) External Server #3 (e.g. UMS)... External Server #N User Agent B

24 interaction with 2G/3G Voice Mailbox based on VPIM Contoh 1: today s real-time over-the-air access of 2G/3G voice mailbox SMTP (VPIM profile) 2G/3G Radio Network Relay/ Server 2G/3G voice mailbox

25 interaction with 2G/3G Voice Mailbox based on HTTP Contoh 2: today s real-time over-the-air access of 2G/3G voice mailbox SMTP (VPIM profile) HTTP 2G/3G Radio Network Relay/ Server 2G/3G voice mailbox

26 Interaction with Internet messaging Contoh 3: SMTP Forwarding Mail Transfer Agent Relay/ Server SMTP or POP3/ IMAP4 Server Message Store

27 interaction with SMSC Contoh 4: 3G TR G Radio Network Relay/ Server SMSC

28 integration with UMS Contoh 5 : 3G TR SMSC 2G SMS client UA UMS Server/ server Relay/ Server SMTP IMAP Unified Msg Store ( , fax, vmail) VPIM/ TIFF/ SMTP SMTP IMAP HTTP H.323/T.37 Gateway T.30 H.323 Compressed voice PC/Web Phone call FAX Voice Mail Access Server Voice mail store Unified Messaging System

29 Protocol Framework applied to WAP implementation of Example for Applied to WAP UI App Svcs Comm Messaging Application Framework MM1 Transfer Protocol Payload App Svcs Comm Transfer Protocol WAP WSP HTTP HTTP Interim Layers Interim Layers TCP TCP Wireless Services Wireless Services IP IP User Agent WAP Gateway Relay/Server

30 Protocol Framework applied to WAP implementation of Contoh 6: User Agent Wireless Network WAP Gateway Internet /IP-network Relay/Server Payload WSP Payload HTTP

31 Architectural example of IP Based Implementation for 3GPP Contoh 7: IP Based Implementation SMTP POP3 IMAP4 HTTP etc. Intranet (Enterprize) SMTP, POP3, IMAP4, HTTP, etc. SMTP POP3 IMAP4 HTTP etc. Internet Terminal IP Based Gateway Relay/Server SMTP POP3 IMAP4 HTTP etc. Server

32 Protocol Framework Definition for IP Based Implementation Example for Applied to IP in 3GPP UI App Svcs Comm Messaging Application Framework MM1 Transfer Protocol Payload App Svcs Comm Transfer Protocol SMTP, POP3, IMAP4, HTTP, etc. SMTP, POP, IMAP, HTTP Wireless Profiled TCP Wireless Profiled TCP TCP TCP IP (Wireless) IP (Wireless) IP IP User Agent IP Based Gateway Relay/Server

33 Combined -Relay/Server Contoh 8: Message Store Relay/Server

34 Non-combined -Relay and -Server Contoh 9: server Message Store SMTP or POP3 / IMAP4 or HTTP SMTP or HTTP Relay

35 interaction with Facsimile Services based on ITU-T.37 Contoh 10: Message Store SMTP ITU-T.30 ITU-T.30 Fax PSTN Relay/ Server ITU-T.37 Fax Gateway

36 Why users with different C settings cannot communicate?

37 Terima Kasih Uke Kurniawan Usman

38 What is GPRS? General Packet Radio Service, new technology on wireless data communication that offers mobile data communication service with a higher bit rate. The next step from air interface evolution which for the first time ever based on PACKET SWITCH Always-On Connection

39 What can GPRS offer you? An Always-On Packet Switch Service Maximum data speed up to 171,2 kbps Offer high QoS for the users and low Cost for operators Billing alternatives

40 DATA RATES REQUIRED FOR APPLICATIONS

41 Data Transfer Time GSM vs GPRS

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