Wireless Network Evolution Tunisie Télécom ITU/BDT Arab Regional Workshop on Wireless Network Evolution Muscut Oman 3-5 May 2004 Wireless Network Evolution SLAHEDDINE MAAREF TUNISIE TELECOM

Presentation outlines 1-Market envirenment 2-Old Analog technologies used for rural wireless connectivity 3-Digital technologies used for rural wireless connectivity 4-conclusion

1-Market envirenment Telecommunications is a key enabler of economic and social development of a nation Universal service is a particularly urgent issue for rural and remote communities

1-Market envirenment Today Internet access becomes as essential as telephony New multimedia services and technological convergence are shifting the regulatory focus to UNIVERSAL ACCESS

1-Market envirenment (Cd) Regulators are focusing on universal access Specific conditions are elaborated for rural areas coverage on fixed network licences Operatores are looking for economic and effecient solutions to provide universal service for rural and remote communities -

2 - ANALOG WIRELESS TECHNOLOGIES

2. 1 Mono-channel & Bi-channel system 2.1 Mono-channel & Bi-channel system Principe : use a radio link to connect remote subscriber moddule to the subscriber equipement into the swich Frequency : UHF / VHF Range : UP to 40 km -

2. 1 Mono-channel & Bi-channel system (Cd). Applications : 2.1 Mono-channel & Bi-channel system (Cd) Applications : - isolated subscribers - rural public phone - farm - police - custom control point Service : basic telophony -

Station d'abonné (une ou 2 lignes) 2.1 Mono-channel & Bi-channel system (Cd) UHF/VHF Interface analogique (2 fils) Station d'abonné (une ou 2 lignes) Central téléphonique

2-2 : Fixed Analog Cellular System Priciple : use the analog cellular network to provide fixed telephony service Applcations : connect isolated subscribers located on the coverage area of the analog cellular Network Frequency : 450 MHZ , 900 MHZ Range : UP to 30km

2-2 : Fixed Analog Cellular System (Cd) Service fixe Station de base Commutateur du réseau mobile Terminal d’abonné radio RTC Service mobile

Common Standards used for Analog Cellular System 2-2 : Fixed Analog Cellular System (Cd) Common Standards used for Analog Cellular System (*) AMPS (Advanced Mobile Phone System) NMT (Nordic Mobile Télécommunications) Origine Américain standard (1982) Scandinavian Standard (1981) Fréquency 900 Mhz 450 Mhz et 900 Mhz Range 35 Km 40 Km (450 Mhz) 27 Km (900 Mhz)

Others Standards used for Analog Cellular System 2-2 : Fixed Analog Cellular System (Cd) Others Standards used for Analog Cellular System N-AMPS (Narrow Advanced Mobile Phone) TACS (Total Access cellular System) E-TACS (Extended Total Access Cellular J-TACS (Japan Total Access Systeù

3 - DIGITAL WIRELESS TECHNOLOGIES

3-1 : Point to Multipoint Radio System Principe : Radio acces Network point to multipoint using wired and/or wireless termination Frquency : 1.4 Ghz - 2.7 Ghz TDM technologies Range : 10 to 200 km

3-1 : Point to Multipoint Radio System (Cd) Station d'abonné Téléphone Interface Analogique/numérique FH (1,5 –> 2,7 GHz) Données bas débits Station centrale Station d'abonné Téléphone Données bas débits RTPC Station Relais Station d'abonné Téléphone Données bas débits Système de gestion de réseau

3-1 : Point to Multipoint Radio System (Cd) Applications : Connectivity of small villages Services : Telephony Data (narrow band) Management of Priority for some subscribers Emmergency call Capacity - Base station : 500 subscribers - Terminal station : micro station : 2-4 sub large station : 128 sub

3-2 -Wireless local loop : WLL Principle : using digital radio-acces to provide fixed telophony service Applications : connectivity of rural and suburban areas Services : Telephony : All PSTN services Data : 64 kb/s and more

3-2 -Wireless local loop : WLL (Cd) Interface radio Téléphonie Station centrale Système de gestion Réseau de transport FH, FO ou cuivre (xDSL) Terminal d’abonné radio BSC BS V5.2 ou Analogique Contrôleur de station de base + Station de base données PSTN Zone Suburbaine/Rurale

3-2 -Wireless local loop : WLL (Cd) Common Standards used for WLL DECT (Digital Européean Cordless Telecommunications) CDMA (Code division Multiple accès) Origine Européen Standard (ETSI) Américain Standard Fréquency 1880-1900 Mhz 450Mhz, 800 Mhz, 1.7-1.8 Mhz, 1.8-1.9 Mhz, 2.2-2.3,Mhz, 2.3-2.5 Mhz, 3.4-3.6 Mhz, 3.5-3.7 Mhz Transmission AMRT/ DRT (Duplex à répartition temporelle) CDMA Range Up to 10 Km Up to 25 Km

3-2 -Wireless local loop : WLL (Cd) Common Standards used for WLL (Cd) DECT (Digital Européean Cordless Telecommunications) CDMA (Code division Multiple accès) Capacity of BS (0.5 Er/Sub, GoS = 1%) 100 abonnés 1 RF (omni) : 800 lignes 12 RF (2 RF*6 secteurs) : 7000 lignes Data LL 64 Kb/s LL (128 Kb/s) ISDN 2 B+D Accès asymétriques (512 Kb/s down link) Accès Ethernet

3-3 : Fixed and /or Restricted GSM - Principle : Using GSM Networks to provide fixed telephony ( or restricted mobility ) Applications : Connectivity of rural areas Services : telephony : all GSM services Data : - circuit : 9.6 kbps : - GPRS : 30-52 kbps

3-3 : Fixed GSM (Cd) Fixed GSM Terminal BTS BSC MSC

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ITU/BDT Arab Regional Workshop on “Wireless Network Evolution”   ITU/BDT Arab Regional Workshop on “Wireless Network Evolution” Muscat, Oman, 03-05 May 2004 CoE/ARB WiFi-RadioLAN Slaheddine MAAREF Tunisia Telecom

ITU/BDT Arab Regional Workshop on “Wireless Network Evolution”   ITU/BDT Arab Regional Workshop on “Wireless Network Evolution” Muscat, Oman, 03-05 May 2004 CoE/ARB Our thanks are adressed to Tunisian Frequency Agency (ANF) promoter and manager of this pilot projet

PLAN WIFI Overview. Applications of RadioLAN Technologies. Définition of Hot Spot. Standardization of RadioLAN Technologies. Tunisian ANF pilot project Tests & évaluation. Commercial WiFi applications Conclusion.

WIFI Overview Wireless Local Area Network Définition: Dénominations : Broadband Radio Network for interconnection of personnel data equipments (PC, lapTop, mobile terminal..) using high speed radio links. Dénominations : WLAN : Wireless LAN RLAN : Radio LAN RLR: Réseau Local Radio

Applications of RadioLAN Technologies To built new LANs (entreprises, universities, library, private …). To offer connectivity inside public areas, transit areas, .. (Hot Spot).

What’s Hot Spot ? Hot Spot is the area of coverage of Radio LAN using the wireless standard 802.11 for Data transmission. Hot Spot to offer mobile high speed Data connectivity within the coverage area. Hot Spot usually implemented inside aéroports, hôtels, conférences centres, campus universitaires…

RadioLAN Standardisation

Coverage Range comparaison between 2,4GHz & 5GHz bandwidth at 15dBm

Tunisian ANF pilot project OBJECTIVES : To be in line with CMR-03 recommandations. Try WiFi solution for Internet accès : Hot Spot. Learn about RadioLAN Technologies

Deployement of the pilot project 3 Steps : Technical Study : constraints & performances required . Configuration & installation of équipements. Tests & évaluations.

Technical Study Data Sécurity Spatial Constraint : Constraints to be observed : Data Sécurity Spatial Constraint : maximum couverage, minimum interférence Technical Constraint : power connectivity (best place), Ethernet accèss.

Constraint Spatial/Sécurity

Data Sécurity Radio transmissions  Possibility of interception. Solutions : Access contrôl : Spatial : Coverage Range  Mesurement & contrôl. - Access adresses Control. Sécurité protocole : WEP (Wired Equivalent Privacy).

Configuration & Installation Installation of 2 RadioLANs inside 2 buildings located at 50m (ANF & Ministère des Technologies de la Communication et du Transport). Interconnexion of the two buildings using a bridge.

Configuration & Installation(Cd) Installation & configuration of a Billing System to charge Internet connexion. Installation & configuration of a Network Management System

WiFi Equipements for the pilot project Accès Points (5 for ANF building, 4 for Ministère building & 2 for interconnexion of the 2 buildings). Switchers (2 inside ANF building). Management & Billing system (2 SMB & 1 CMB). Portable terminals

Management system (2 SMB & 1 CMB) SMB - On Site MultiBox : Users Authentication Sessions management Accounting of connexion time CMB - Central MultiBox : Data base management . Validation of authentication request of SMBs SMB’s management

Network Topologie

Access Point Configuration inside ANF building (Ethernet connexion) Internet SMB/ANF AP

Access Point Positions Signal required Signal required Access Point Positions AP3 AP1 AP2 1st Floor Ground

Access Point Positions ANF Building   Access Point Positions ANF Building AP4 AP5 3d Floor 2d Floor

Access Point Positions Ministère Building AP_TELMIN_3 AP_TELMIN_4 AP_TELMIN_2 AP_TELMIN_1 SMBTelmin

Directionnel antennas Installation

Tests Évaluations 1- Radio Tests Results: - Tested Signal Power : 15mW, 30mW, 50mW et 100mW. - Data Speed : up to 5 Mb/s. - Coverage Range : 15 to 25m.

Tests Évaluations (Cd) 2- Sécurity Tests : Intrusion Tests : at radioLAN level at serveurs( firewall….) level at coding level. at Authentication level. Sessions management tests

Tests Évaluations (Cd) 3-Operational Tests System Administration : Login Management. Access Point Management. VLAN Management. Network Coverage & handover. 4- Physical Tests Mobile Terminals Mutuel Accès. Connectivity tests between servers : CMB, SMB1,SMB2.

Common WiFi Applications Case of « Hot Spot » Integrated access service included in the package offered by the area manager (could be free of charge) : Aireport, Railway Station… example : Wayport Network (USA) for hôtels information.

Common WiFi Applications (Cd) Access to ISPs -Payement using credit card or prepaid card…. Mobiles opérators data access service using SIM card for authentication, charging...

Conclusion WiFi technologies are developping very fast offring new facilities for terminal mobility. Private & Public operators are in compétition sharing this promising market. Development of advanced Standards : 802.11b802.11g to get higher speeds & better security.

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