Broadband Wireless Infrastructure By Désiré Karyabwite ITU-BDT 19, May 2008 E-mail: desire.karyabwite@itu.int

Content Implementation Methodology Swaziland Case Study Current situation Challenges Possible solutions Wireless broadband urban connectivity Wireless broadband in rural areas Conclusion and recommendations

Implementation Methodology The objective of the ITU Broadband Wireless Infrastructure in collaboration with Potential partners, is to establish, build, operate and maintain a broadband wireless infrastructure within identified areas of the beneficiary countries Field Mission: Network and Needs Assessment Sites identification The way forward

Swaziland Case Study - Current situation Surface: 17,000 km2 Population: 1.3 million inhabitants Nominal GDP: E billions 16.616 (2005) Relief: mountainous Dwelling: sparsely distributed SPTC network Optical fiber : good coverage Switching and transmission: obsolete Access network: copper and WLL

Current situation (cont’d) SPTC network (cont’d) Internet Total BW :10 Mbps Coverage Service quality? Electricity: satisfactory coverage

Challenges How to provide broadband services to en-users, particularly to rural area populations? Fix copper lines : costly Optical fiber: available in some areas; last mile to be completed by WLL or copper Towers: available in some areas

Project Team during the site surveys

Possible solutions Wireless connectivity Wi-Max (IEEE 802.16e, mobility) Range: theoretically 50 km, in practice 15 km Bandwidth: theoretically 80 Mbps, in practice 20 Mbps (within the cell) CDMA 2000: 1xEVDO Range: theoretically 30 km, in practice 10 km Bandwidth: theoretically 2 Mbps, in practice < 2 Mbps

Configuration 1: Internet Access and V5.2-Voice

Configuration 2: Internet Access and VoIP GTW

Configuration 2: Diagram Details

Configuration 2: Diagram Details (one possible option) - Output to VoIP via E1 digital trunk from PSTN lines Conversion from standard analog subscribers to E1 Fixed-to-mobile conversion Connecting old PBX to digital trunks Etc.

Wireless Broadband Urban Connectivity

Wireless Broadband in Rural Areas

Conclusions & Recommendations Challenges : - Internet Node –(QoS) - Financial $$$ (Internet Only or Internet + Voice + Mobility) Core network: IP-MPLS over DWDM Appropriate International Bandwidth (68/34 Mbps) Transport (OF-DWDM => New Corporate Strategy?) Switching (λ switching => New Corporate Strategy?) Access: WiMax - Internet Access (and mobility?)

Any question or comment? THANKS!