WIRELESS BROADBAND ACCESS “ WBA ”

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.