1. Wireless Solutions for Rural Connectivity
Tunisie Télécom
ITU/BDT Arab Regional Workshop on Wireless Network Evolution
Muscut Oman 3-5 May 2004
Wireless Solutions for Rural Connectivity
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
Today Internet access becomes as essential as telephony
New multimedia services and technological convergence are shifting the regulatory focus to UNIVERSAL ACCESS

4. 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 -

5. 2 - ANALOG WIRELESS TECHNOLOGIES USED FOR RURAL CONNECTIVITY-

6. 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 -

7. 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 -

8. 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

9. 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

10. 2-2 : Fixed Analog Cellular System (Cd)
Service fixe
Station de base
Commutateur du
réseau mobile
Terminal d’abonné radio
RTC
Service mobile

11. 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)

12. 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

13. 3 - DIGITAL WIRELESS TECHNOLOGIES USED FOR RURAL CONNECTIVITY

14. 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

15. 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

16. 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

17. 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

18. 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

19. 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

20. 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

21. 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

22. 3-3 : Fixed and/or Restricted GSM (Cd)
Frequency : 900 Mhz , 1800 Mhz , 1900 Mhz
Range : up to 35 km

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

24. 3-3 : Restricted GSM (Cd)
BTS
BSC 1
MSC
Allowed mobility for that Subscriber
All other cells are barred for that Subscriber

25. Limited mobility option and rich set of value-added services when using mobile handsets
Smooth migration to GPRS/EDGE enabling higher data rates and new services
GSM accommodates voice communications very efficiently. Nevertheless, be aware that IS95 (or CDMA One) is known to use spectrum highly efficiently, the same or even better than GSM does.

26. Advantages of GSM for limited mobility solutions
3-3 : Fixed and/or Restricted GSM (Cd)
Advantages of GSM for limited mobility solutions
Proven, very mature technology
Large range - up to 35 km in an open rural environment
High spectrum efficiency for voice services
Excellent & stable coverage/capacity ratio
GSM accommodates voice communications very efficiently. Nevertheless, be aware that IS95 (or CDMA One) is known to use spectrum highly efficiently, the same or even better than GSM does.

27. Smooth migration to GPRS/EDGE enabling higher data rates and new services
Limited mobility option and rich set of value-added services when using mobile handsets

28. For rural and suburban areas, wireless solutions are less costly than wired when subscribers are spread
Quick deployment and easy installation
The fixed GSM solution is capable of evolving to a full mobile solution
Pre-paid (public phones & mobile pre-paid) for all users through the same IN platform

29. 3-4 Rural connectivity using V.SAT System
Principle : provide fixed telophony & Data services using satellite links
Applications : connectivity of wide rural areas with very low density
Services : Telephony : All PSTN services
Data : Circuit switching n*64 kb/s
: Packed switching : Ethernet

30. 3-4 Rural connectivity using V.SAT System
Publiphone H U G E S N T W O R K Y M A L C I P
Quantum-Direct
HUB H U G E S N T W O R K Y M A L C I P
Quantum-Direct
RTC
Station multilignes H U G E S N T W O R K Y M A L C I P
Quantum-Direct
Station Terrienne IP
Station monoligne
Stations terminales VSAT

31. CONCLUSION WLL (DECT) Accès GSM VSAT Population Density Medium Low
High (small area)
Applications & services
Téléphony
Fax
Data
SMS (GPRS)
Multimédia
Speeds
Up to 70 kbits
9,6 Kbits
Up to 45 Mbits
Mobility
No (limited)
Yès (Restricted/limited) No
Coverage Range
< 5 km
<30 km
Local
GoS (Compared to wired line)
Equivalent
Less

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