WIRELESS%20BROADBAND%20ACCESS%20

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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
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SOMMARY

• Market Overview
• Definition
• Applications
• advantages
• WBA Technologies
• Tunisie Telecom WBA Project
• Comparative Study for Broadband Access

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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.

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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.

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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

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Definition 1
Wireless Broadband Access (WBA) is a new
solution based on point to multipoint radio
distribution to provide broadband access.
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Definition 2
It comes as attractive and innovative alternative
for conventional broadband connections based on
traditional copper links.
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Definition 3
Wireless Broadband Access (BWA) is used to
provide broadband services to suburban and remote
users (Voice, Data, High speed Internet).
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Access Network
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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

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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

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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

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Téléphony Internet
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cellular configuration to got more capacity
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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).

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Typical Network Architecture
Ethernet 100 Base T
Interface V5.2
Station de base Contrôleur de station de base
Station Centrale
Station de Gestion
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Typical Network Architecture (Cd)
Routeur
E1
Terminale SU
PABX
Interface V5.2
Station de base
E1
Routeur
Ethernet 10 Base T
Station de Gestion
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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 .

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

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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.

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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,...).

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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.

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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,...).

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Tunisia Telecom WBA Projet
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Objective Network configuration Scope of Projet
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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

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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

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Project Description

• Areas to be covered by WBA
• Zone South Hammamet
• North suburbs of Tunis
• South suburbs of Tunis (Ouardia)

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Network Architecture
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Network Architecture
Ethernet 100 Base T
Interface V5.2
Station de base Contrôleur de station de base
Station Centrale
Station de Gestion
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Scope of Projet
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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

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• COST COMPARAISON
• WBA lt gt Wired ADSL
• For suburban areas

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•  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
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  Cost calculation of ADSL wired access (Cd)

• The average cost per ADSL wired access 2700 DT

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• Cost calculation of WBA_CDMA access

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• COST COMPARAISON
• For suburban areas
• WBA lt gt Wired ADSL
• 2500 DT lt gt 2700 DT

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  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.
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???? Thank you