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

SOMMARY 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

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

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

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

Access Network

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

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 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).

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

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

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 .

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

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.

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,...).

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.

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,...).

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.

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,...).

Tunisia Telecom WBA Projet

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

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

Network Architecture

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

Scope of Projet

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

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

 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

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

Cost of a small WBA network (200 accèss) Cost calculation of WBA_CDMA access Cost of a small WBA network (200 accèss) 500 000 Dinars Average cost of one WBA 2500 Dinars

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

  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.

شكرا Thank you