1. Broadband Wireless InfrastructureBy
Désiré Karyabwite
ITU-BDT
19, May 2008

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

3. 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

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

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

6. 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

7. Project Team during the site surveys

8. Possible solutions Wireless connectivity
Wi-Max (IEEE e, 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

9. Configuration 1: Internet Access and V5.2-Voice

10. Configuration 2: Internet Access and VoIP GTW

11. Configuration 2: Diagram Details

12. 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.

13. Wireless Broadband Urban Connectivity

14. Wireless Broadband in Rural Areas

15. 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?)

16. Any question or comment?
THANKS!