The Malawi TV White Spaces: For Real or Mere Hype?
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1 Fondation Partager le Savoir Sharing Knowledge Foundation Pavilhao do Conhecimento Lisbon Portugal (15 th to 17 th May, 2014) The Malawi TV White Spaces: For Real or Mere Hype? Chomora Mikeka, PhD, Physics Department at Chancellor College in the University of Malawi URL: vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 1
2 ! Scan Results Using the Spectran, RF-Explorer and Geo-tagged S/A! Malawi Government Support on TVWS Technology Use! FTRA 2013 Recommendations! Actual Pilot TVWS Deployment and DSpace Application! Network Performance (Internal and External Capacities)! Antenna Design for TVWS broadband radios and UHF TV stations! World View Points : Microsoft (Dubai Agenda), ITU (Geneva Summit)! Conclusions vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 2
3 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 3
4 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 4
5 Coming Up Next vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 5
6 ITU Region 1 SADC Malawi Addition Info Malawi Examples MHz BROADCASTING MHz BROADCASTING Digital TV Broadcasting ( MHz) Digital Audio Broadcasting ( MHz) TV Band III (Geneva Plan GE-06 applies). Migration from analogue to digital broadcasting. Digital TV Broadcasting Services (VHF band 3). DAB, Fixed/Mobile services on sec. basis per F/note Received Signal [dbm] Pirimiti Hospital Thondwe Hospital Fill the blank Blank Space = White Space vendredi, 6 juin Frequency [GHz] Dr. Chomora Mikeka, Director for Malawi White Spaces Project 6
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8 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 8
9 0 0 Received Signal [dbm] Pirimiti-Hospital Thondwe-Hospital St-Marys-Girls-Sec-Sch Base-Station-Physics-Dept Seismology-HQ Air Wing HQ Received Signal [dbm] Pirimiti-Hospital Thondwe-Hospital St-Marys-Girls-Sec-Sch Base-Station-Physics-Dept Seismology-HQ Air Wing HQ Frequency [GHz] Frequency [GHz] *Demonstrated by Caspah Kamunda and Later by Martin Thodi with Bash Scripts on Ubuntu Linux for Data Acquisition During the TVWS Training in Malawi July-Aug 2013 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 9
![42 0.44 0.46 0.48 0.5 Frequency [GHz] -120 0.5 0.52 0.54 0.56 0.58 0.](/docs-images/41/4757166/images/page_9.jpg "6 Frequency [GHz] *Demonstrated by Caspah Kamunda and Later by Martin Thodi with Bash Scripts on Ubuntu Linux for Data Acquisition During the TVWS Training in")
10 0 Received Signal [dbm] Pirimiti-Hospital Thondwe-Hospital St-Marys-Girls-Sec-Sch Base-Station-Physics-Dept Seismology HQ Air Wing HQ Frequency [GHz] vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 10
11 Coming Up Next vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 11
12 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 12
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14 Coming Up Next vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 14
15 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 15
16 Coming Up Next vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 16
17 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 17
18 On-Air Studio Console to Mixer Via Fader Control Production Studio P2P LAN DB-2: Power Supply to Sockets, Aircons, & Lights DB-2 Technical Room Tx Room! 10 kg monopole antenna on mast! 30W BS radio in Tx Room plus a provisional WS database for bootstrapping with WSD at CP Peg Stay Warning/Navigation Light Dipole Power Splitter FM signal Landing Gantry Feeder cable approx. 60m 2013 年 7 月 1 日 ( 月 ) Design by: Dr. Chomora Mikeka (Physics Department, Chancol) 3! Regulators need to think carefully and legitimize this sort of thinking for the rural broadband connectivity in Africa vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 18
19 Coming Up Next Session 6_1 - ITU Session 6_2 - ITU vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 19
20 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 20
21 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 21
22 Coming Up Next vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 22
23 TVWS Base Station Mounting at FM Radio Mast vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 23
24 7 km 2.4 km km vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 24
25 *18.57 km from the BS A brighter tomorrow with TVWS vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 25
26 Coming Up Next: vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 26
27 Trango Radio Link www POE OSPF at BS 2Mbps from MTL ISP (Pilot) 155Mbps (STM1) from Fibre Cable (Actual) July 2014~ vendredi, 6 juin / 100 LAN/WAN) Cisco Router SW INTERNET IP: Subnet: GW: DNS1: DNS2: Netgear Switch (SW) ( x): Includes testmy.net ISP bandwidth monitoring Alix BS Physics POE ETH1: DHCP To LAN (St. Mary s Computer Lab) at x Dr. Chomora Mikeka, Director for Malawi White Spaces Project UHF (CH31) ITU Region 1 ETH0: DHCP x Alix Board CPE CST00162 ETH2: Reserve Note: - Alix Boards Configured Using Voyage Linux - Python Script on Alix for Throughput Monitoring 27
28 Terminal Description Station Name CST00162 ICTP CPE 162 St. Mary s Sec School CST00163 ICTP CPE 163 AirWing CST00164 ICTP CPE 164 GPS (Seismology Dept.) CSB00490 ICTP Base 490 ZA TVWS Basestation vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 28
29 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 29
30 Coming Up Next vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 30
31 vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 31
32 1.8 Mbps Max for Ext. Net 3.5 Mbps for Int. Net vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 32
33 ! Reduced cost on BS equipment cf. FBWA and mobile broadband solutions (3G, LTE)! Option for license exempt or cheaper license than FBWA and mobile broadband or licensed wireless spectrum in general! If internet bandwidth provisioning could be possible directly from sub-marine cables e.g. (SEACOM and EASSy) then user tariffs would be much lower:-current transiting costs are obscenely high and prohibitive. Exploring use of dark fibre.! Robust and reliable propagation and steady data rates at UHF band than in higher microwave and millimeter-wave bands! Prospect of building our own WSD (radios) and accessories (antennas) will reduce the hardware cost. We now seek partners and sponsors.! Traffic offloading solutions for Cellular networks.! What else? vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 33
34 Magnitude [S11 (db), Z (Ohms)] Our UHF Butterfly antenna is simple design, low-cost, quick to fabricate and reliable performance Impedance, Z VSWR S Frequency [MHz] vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 34
35 Our UHF Butterfly antenna is simple design, low-cost, quick to fabricate and reliable performance vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 35
36 SMWSCRS-14/Pages/Presentations.aspx! John Shaw! SG 6 - Opportunistic use of Spectrum Horn of Plenty or Pandora s Box In looking to the March 16 th deadline, would the Government of Malawi be willing to formally submit this as a contribution to the WTDC? - Dubai World Trade Centre in Dubai, United Arab Emirates, from 30 March to 10 April 2014 MACRA Says Check: 1. Government Approval 2. SADC / ATU Position 3. Microsoft Position 4. APT Paper Review vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 36
37 Introduced the Malawi TVWS as real and no mere hype. Malawi TVWS network performance and roadmap presented. Areas for possible partnerships highlighted. Global views and perceptions on TVWS exposed. vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 37
38 TV White Spaces, I presume? M.Zennaro, E.Pietrosemoli, A.Arcia-Moret, C.Mikeka, J.Pinifolo, C.Wang, S.Song TV White Spaces, I presume?, in proceedings of the Sixth International Conference on Information and Communication Technologies and Development (ICTD2013) An Assessment Study on White Spaces in Malawi Using Affordable Tools M.Zennaro, E.Pietrosemoli, JSP Mlatho, M.Thodi, C.Mikeka An Assessment Study on White Spaces in Malawi Using Affordable Tools, in proceedings of the IEEE Global Humanitarian Technology Conference 2013 (Award Paper) Mikeka, C, (2013). Piloting White Spaces for DSpaces in Malawi vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 38
39 1. What is the minimum tested internet speed (in kbps) that is required as a threshold to maintain an online or active status of the Carlson TVWS base station and its clients? >>The localized OMC will be ready in less than one month, where no bandwidth is needed. 2. Assuming that the TVWS clients are active and networked to the TVWS base station; what is the tested maximum speed of file transfer between a client and the base station? >>13 Mbps 3. How do you measure that speed as reported in (2) above? What is the measurement setup like? >>Jperf and standard packet testing protocols vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 39
40 4. Is the speed in (2) and (3) above affected in anyway with the Internet speed used to keep alive the network i.e. as reported in (1) above? >>N/A with localized OMC 5. What are the factors that can affect these two speeds as discovered in 1 to 4 above? >>Link budget variables that affect potential available modulation such as link distance, obstacles, cable loss, antenna height etc. Malawi TVWS Roadmap? June 2014 End of Trial Meanwhile: Study of Phase II: Network Performance Draft Regulations and WSD Specifications Stakeholder Consultations vendredi, 6 juin 14 Dr. Chomora Mikeka, Director for Malawi White Spaces Project 40
Piloting White Spaces for DSpaces in Malawi
Abstract Piloting White Spaces for DSpaces in Malawi Chomora MIKEKA 1 1 University of Malawi, Chancellor College, Physics Department, P.O. Box 280, Zomba, Malawi Tel: + 265 1 524 222, Fax: + 265 1 524046,
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