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Title: WIRELESS%20BROADBAND%20ACCESS%20


1
WIRELESS BROADBAND ACCESS WBA
ITU/BDT Arab Regional Workshop on Wireless
Network Evolution Muscut Oman 3-5 May 2004
Tunisie Télécom
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 et voix simultanés
  • Net Data rate jusquà 2 Mbps
  • 2000 utilisateurs par station de base
  • Portée de 50 Kms
  • Internet Access Point

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

12
And for Internet....
  • Débits allant à 512 Kbps
  • Bit error rate BER lt 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
Typical Network Architecture
Ethernet 100 Base T
Interface V5.2
Station de base Contrôleur de station de base
Station Centrale
Station de Gestion
17
Typical Network Architecture (Cd)
Routeur
E1
Terminale SU
PABX
Interface V5.2
Station de base
E1
Routeur
Ethernet 10 Base T
Station de Gestion
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
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
  • 27.5-28.35 GHZ
  • 31.0-31.30 GHZ
  • Bit rate from 5 Mb/s to 1.25 Gb/s (with
    dynamic allocation)
  • Covering 5km
  • 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
  • 2.1-2.2 GHZ
  • 2.5-2.7 GHZ
  • Bit rate from 3 Mb/s to 1 Gb/s
  • range 35km (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
  • 3.4-3.6 GHZ
  • 3.5-3.7 GHZ
  • Bit rate until 512 kb/s
  • Couvering 25km (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 (2BD).
  • 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 (2BD).
  • 1 LL 128 Kb/s or 264 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
Network Architecture
Ethernet 100 Base T
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 (2BD)
  • 50 téléphone lines

35
  • COST COMPARAISON
  • WBA lt gt 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)
  • The average cost per ADSL wired access 2700 DT

38
  • Cost calculation of WBA_CDMA access

39
  • COST COMPARAISON
  • For suburban areas
  • WBA lt gt Wired ADSL
  • 2500 DT lt gt 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
???? Thank you
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