WIRELESS WIRELESS BROADBAND ACCESSBROADBAND ACCESS
“ “WBAWBA” ”
Tunisie Télécom
SLAHEDDINE MAAREFTUNISIE TELECOM
ITU/BDT Arab Regional Workshop on Wireless Network Evolution
Muscut Oman 3-5 May 2004
SOMMASOMMARYRY•Market Overview
•Definition
•Applications
•advantages
•WBA Technologies
•Tunisie Telecom WBA Project•Comparative Study for Broadband Access :
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.
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.
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
DDeefinitionfinition 1
Wireless Broadband Access (WBA) is a new solution based on point to multipoint radio distribution to provide broadband access.
It comes as attractive and innovative alternative for conventional broadband connections based on traditional copper links.
DDeefinitionfinition 2
Wireless Broadband Access (BWA) is used to provide broadband services to suburban and remote users (Voice, Data, High speed Internet).
DDeefinitionfinition 3
Access Network
Wireless solution
LOBBYLOBB Y
Local Exchange
IAP
PSTN
IP Network
Router Gateway
• Internet Access Point
Internet et voix simultanésNet Data rate: jusqu‘à 2 Mbps 2000 utilisateurs par station de basePortée de 50 Kms
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
And for Internet....
•Débits allant à 512 Kbps
•Bit error rate BER <= 10-6
•Connection permanente
•Système transparent au dessus de la couche 2
Téléphony & Internet
cellular configuration to got more capacity
Typical aTypical applications of BWA pplications 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).
Typical Network Architecture
PSTN RNIS
IP
Station de base & Contrôleur de station de base
Station Centrale
Station de Gestion
Ethernet 100 Base T
Frame Relay
LL
Interface V5.2
RTCP RNIS
Station de base
Station de GestionEthernet 10 Base T
Frame Relay
Lignesspésialisée
s
Interface V5.2
Routeur
E1
PABX
E1
Routeur
LAN
Terminale SU
Typical Network Architecture (Cd)
TCP/ IP
AdAdvantages of BWAvantages 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 .
Wireless Broadband Access
Technologies
ITU/BDT Arab Regional Workshop on Wireless Network Evolution
Muscut Oman 3-5 May 2004
Wireless Broadband Access Technologies
LMDS technologLMDS technologyy
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.
LMDS SpecificationsLMDS 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,...).
Wireless Broadband Access Technologies (Cd)
MMDSMMDS Technology Technology
• Microwave Multipoint Distribution System (designed to serve small geographic area ).
• MMDS system focuses first on Small and Medium Enterprises.
MMDSMMDS SpecificationsSpecifications
• 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,...).
Wireless Broadband Access Technologies (Cd)
W_W_CDMACDMA technolog technologyy
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.
WW--CDMA specificationsCDMA 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,...).
Tunisia Tunisia Telecom WBA Telecom WBA
ProjetProjet
Objective
Network configuration
Scope of Projet
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
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
Areas to be covered by WBA :Zone South Hammamet
North suburbs of Tunis
South suburbs of Tunis (Ouardia)
Project Description
Network Architecture
PSTN RNIS
IP
Station de base & Contrôleur de station de base
Station Centrale
Station de Gestion
Ethernet 100 Base T
Frame Relay
LL
Interface V5.2
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
Scope of projet
COST COMPARAISONCOST COMPARAISON
WBA WBA < >< > Wired ADSL Wired ADSL
For suburban areasFor suburban areas
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
• Cost calculation of ADSL wired accessCost calculation of ADSL wired access
Average cost of cable(6km)
2500 dinars
Cost of ADSL terminal
100 dinars
Cost of one DSLAM port
100 dinars
Total 2700 Dinars
Cost calculation of ADSL wired access (Cd)Cost calculation of ADSL wired access (Cd)
The average cost per ADSL wired access = 2700 DT
• Cost calculation of WBA_CDMA accessCost calculation of WBA_CDMA access
Cost of a small WBA network (200 accèss)
500 000 Dinars
Average cost of one WBA 2500 Dinars
COST COMPARAISONCOST COMPARAISONFor suburban areasFor suburban areas
WBA WBA < >< > Wired ADSL Wired ADSL2500 DT 2500 DT < >< > 2700 DT 2700 DT
ConclusionConclusionThe optimal Broadband solution to The optimal Broadband solution to connect suburban users depends on connect suburban users depends on distansesdistanses (geographical distribution) (geographical distribution) and and numbernumber of subscribers. of subscribers.
The main advantages of WBA are The main advantages of WBA are time time to market and easy re-use.to market and easy re-use.
