1. 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

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

3. 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

4. 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

5. 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 -

6. 2 - ANALOG WIRELESS TECHNOLOGIES

7. 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 -

8. 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 -

9. 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

10. 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 , MHZ
Range : UP to 30km

11. 2-2 : Fixed Analog Cellular System (Cd)
Service fixe
Station de base
Commutateur du
réseau mobile
Terminal d’abonné radio
RTC
Service mobile

12. 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)

13. 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

14. 3 - DIGITAL WIRELESS TECHNOLOGIES

15. 3-1 : Point to Multipoint Radio System
Principe : Radio acces Network point to multipoint using wired and/or wireless termination
Frquency : 1.4 Ghz Ghz
TDM technologies
Range : 10 to 200 km

16. 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

17. 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 : subscribers
- Terminal station : micro station : 2-4 sub
large station : 128 sub

18. 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

19. 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

20. 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
Mhz
450Mhz, 800 Mhz, Mhz, Mhz, ,Mhz, Mhz, Mhz, Mhz
Transmission
AMRT/ DRT (Duplex à répartition temporelle)
CDMA
Range
Up to 10 Km
Up to 25 Km

21. 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

22. 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 : kbps

23. 3-3 : Fixed GSM (Cd)
Fixed GSM Terminal
BTS
BSC
MSC

24. شكرا Merci pour votre attention Thank you for your attention

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

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

27. 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.

28. 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

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

30. What’s Hot Spot ?
Hot Spot is the area of coverage of Radio LAN using the wireless standard 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…

31. RadioLAN Standardisation

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

33. 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

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

35. 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.

36. Constraint Spatial/Sécurity

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

38. 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.

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

40. 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

41. 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

42. Network Topologie

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

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

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

46. Access Point Positions Ministère Building
AP_TELMIN_3
AP_TELMIN_4
AP_TELMIN_2
AP_TELMIN_1
SMBTelmin

47. Directionnel antennas Installation

48. 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.

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

50. 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.

51. 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.

52. 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...

53. 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 : b802.11g to get higher speeds & better security.

54. شكرا Merci pour votre attention Thank you for your attention