1. WIRELESS BROADBAND ACCESS “WBA”
ITU/BDT Arab Regional Workshop on Wireless Network Evolution
Muscut Oman 3-5 May 2004
Tunisie Télécom
WIRELESS BROADBAND ACCESS “WBA”
SLAHEDDINE MAAREF
TUNISIE TELECOM

2. SOMMARY Market Overview Definition Applications advantages
WBA Technologies
Tunisie Telecom WBA Project
Comparative Study for Broadband Access :

3. Market overview 1
Forcast on Bandwith Demand shows that all users need more and more bandwith
According to the « sophisticated » multimidia applications they are using, residential subscribers are asking for high speed internet.

4. Market overview 2
Tariffs for broadband services are decreasing around the world.
The boom of the broadband market is coming.
Operators have to prepare infrastructure to face demands every where.

5. Market Overview 3
Operators today problem : Availability & Quality of Access Network
xDSL technologies are not available and suitable every where
Deployment of xDSL technologies depends on the quality and coverage of existing wired network

6. Definition 1
Wireless Broadband Access (WBA) is a new solution based on point to multipoint radio distribution to provide broadband access.

7. Definition 2
It comes as attractive and innovative alternative for conventional broadband connections based on traditional copper links.

8. Definition 3
Wireless Broadband Access (BWA) is used to provide broadband services to suburban and remote users (Voice, Data, High speed Internet).

9. Access Network

10. Wireless solution Internet Access Point Internet et voix simultanés
Net Data rate: jusqu‘à 2 Mbps
2000 utilisateurs par station de base
Portée de 50 Kms
Router Gateway
IP Network
IAP
Local Exchange
PSTN
Internet Access Point

11. Wireless for telephony
High quality voice with MOS > 4
Fax G3 (14.4 Kbit/s)
Modem V.90 (56 kbit/s)
Bit error rate BER <= 10-4
Pay phones
Supplementary services

12. And for Internet.... Débits allant à 512 Kbps
Bit error rate BER <= 10-6
Connection permanente
Système transparent au dessus de la couche 2

13. Téléphony & Internet

14. cellular configuration to got more capacity

15. Typical applications of BWA
Big enterprises managing important telecommunication traffic such as Call Centers located on suburban areas.
Other Applications such as :
Internet Network Permanent Access
Multichannel video entertainment programming (similar to land based cable television).

16. Contrôleur de station de base
Typical Network Architecture
Frame Relay IP LL
Ethernet 100 Base T
PSTN
RNIS
Interface V5.2
Station de base &
Contrôleur de station de base
Station Centrale
Station de Gestion

17. Typical Network Architecture (Cd)
TCP/ IP
Routeur E1
Frame Relay
Terminale SU
Lignes
spésialisées
PABX
RTCP
RNIS
Interface V5.2
Station de base E1
Routeur
Ethernet 10 Base T
Station de Gestion
LAN

18. Advantages of BWA
BWA may be profitable compared to wired lines in areas with low density
Wireless network deployment is progressive :
Gradual deployement
minimum market risks.
Time to market is shorter than wired network .

19. Wireless Broadband Access Technologies
ITU/BDT Arab Regional Workshop on Wireless Network Evolution
Muscut Oman 3-5 May 2004
Wireless Broadband Access Technologies

20. Wireless Broadband Access Technologies
LMDS technology
LMDS solution (Local Multipoint Distribution Service).
LMDS combines voice and data in order to offer a wide range of broadband communication services.
LMDS system focuses first on Small and Medium Enterprises.

21. LMDS Specifications IEEE Standard : 802.16.1 Access type : OFDM
Frequency :
GHZ
GHZ
Bit rate : from 5 Mb/s to 1.25 Gb/s (with dynamic allocation)
Covering : km
Services : voice, data ( Internet, LL, VPN, Frame Relay, Broadcast,...).

22. Wireless Broadband Access Technologies (Cd)
MMDS Technology
Microwave Multipoint Distribution System (designed to serve small geographic area ).
MMDS system focuses first on Small and Medium Enterprises.

23. MMDS Specifications IEEE Standard : 802.16.3 Access type : OFDM
Frequency :
GHZ
GHZ
Bit rate : from 3 Mb/s to 1 Gb/s
range : km (with non line-of-sight).
Services : voice, data ( Internet, LL, VPN, Frame Relay, Broadcast,...).

24. Wireless Broadband Access Technologies (Cd) W_CDMA technology
Multi-services broadband access network with point-multipoint radio distribution using CDMA access techniques.
W_CDMA to provide wireless connections up to 1 Mb/s.

25. W-CDMA specifications
Access type : CDMA
Frequency band :
GHZ
GHZ
Bit rate : until 512 kb/s
Couvering : km (with non line-of-sight
Services : voice, data ( Internet, LL, VPN, Frame- Relay, Broadcast,...).

26. Tunisia Telecom WBA Projet

27. Objective
Network configuration
Scope of Projet

28. Project Objective
Built a WBA network to provide the following services :
Internet high speed access (up to 512 Kb/s down link, up to 128 Kb/s up link).
ISDN Accès (2B+D).
Frame Relay Accès.
LL Accès (64 Kb/s & 128 Kb/s).
Voice sevices

29. Project Description Installation of : 3 base stations BSs 1 BSCs
1 Central Station
600 of Different types of Subscriber Terminal Equipement :
1 Line high speed Internet asymétric + 2 Telephone Lines
1 ISDN Line (2B+D).
1 LL 128 Kb/s or 2*64 Kb/s.
2 Téléphone lines

30. Project Description
Areas to be covered by WBA :
Zone South Hammamet
North suburbs of Tunis
South suburbs of Tunis (Ouardia)

31. Network Architecture

32. Contrôleur de station de base
Network Architecture
Frame Relay IP LL
Ethernet 100 Base T
PSTN
RNIS
Interface V5.2
Station de base &
Contrôleur de station de base
Station Centrale
Station de Gestion

33. Scope of Projet

34. Scope of projet
400 High speed Internet (128 to 512 Kb/s for down link & 32 to 128 Kb/s up link).
50 accès Frame Relay 64 & 128 Kbit/s
50 accès LL 64 & 128 Kbit/s
50 accès ISDN (2B+D)
50 téléphone lines

35. WBA < > Wired ADSL
COST COMPARAISON
WBA < > Wired ADSL
For suburban areas

36.  Cost calculation of ADSL wired access
Assumption
  we use 4 km + 2 km (primary + secondary) of undergrounded copper cable (0.6mm) to prvide ADSL access for 20 suburban subscribers.
We use small capacity DSLAM & ADSL modem

37. Cost calculation of ADSL wired access (Cd)
Average cost of cable
(6km)
2500 dinars
Cost of ADSL terminal
100 dinars
Cost of one DSLAM port
Total
2700 Dinars
The average cost per ADSL wired access = 2700 DT

38. Cost of a small WBA network (200 accèss)
Cost calculation of WBA_CDMA access
Cost of a small WBA network (200 accèss)
Dinars
Average cost of one WBA
2500 Dinars

39. WBA < > Wired ADSL
COST COMPARAISON
For suburban areas
WBA < > Wired ADSL
2500 DT < > 2700 DT

40. Conclusion
The optimal Broadband solution to connect suburban users depends on distanses (geographical distribution) and number of subscribers.
The main advantages of WBA are time to market and easy re-use.

41. شكرا
Thank you