Presentation on theme: "1 Digital Dividend and Plan Geneva 06 Communications Regulatory Authority of the Republic of Lithuania Director of Radiocommunications department dr. Mindaugas."— Presentation transcript:
1 Digital Dividend and Plan Geneva 06 Communications Regulatory Authority of the Republic of Lithuania Director of Radiocommunications department dr. Mindaugas Žilinskas Warsaw, 7-9 May 2012
2 Plan Geneva 06 and Digital Dividend 1. Current situation of DTT in Lithuania. 2. Digital Dividend and related problems. a)Impact of DD1 on DVB-T networks. b)TV vs ARNS compatibility problems. c) Impact of ARNS on LTE. 3. Decisions of WRC-12 and a possible impact on DTT. Coordination problems of new stations or allotments. 4. Conclusions
7 Distribution of DVB-T stream in channels 64 QAM, CR=3/4, GI=1/4 Common stream 22,4 Mbps 85% stream – TV progr. 10 progr. 2 Mbps/progr. Channel 57Channel 60
8 Measurements A view inside the car
9 LTV programme, fixed reception receivers Kaon S660HD, Salteka marking ViewgoodcrumbledNo view Number of settlements settlements-no less than 500 inhabitants.
10 Reception of LTV programme It was measured in 475 settlements (which comprise no less than 500 inhabitants), in 456 cases reception was good; In 19 cases there was no reception; These measurements covered population of 2,64 m, so 99,3% of them can receive the programmes transmitted over national LRTC network 1.
11 Comparison of measured and calculated field strength values Method of calculations CCIR –Predict.
12 Before WRC-12: four DVB-T networks in operation, beauty contest for two UHF networks and five analogue networks until 29 October 2012 LRTC 1 LRTC 2 TEO 1 TEO 2 NAT 5 NAT 6 LRT
13 Digital dividend 1 (DD1) TV channels ( MHz) -Decision (2010/267/EU ) of the European Commission on harmonized technical conditions on use in the 790–862 MHz frequency band for terrestrial system capable of providing electronic communication service in Europe. -Radio spectrum policy programme approved by the European Parliament on 16 February From 1 January 2013 – the 800 MHz band, article 6 paragraph 3.
14 Channel arrangement for ECN in the MHz frequency band
15 Digital dividend I (TV channels 61-69)
16 Requirements for protection of registered stations of other primary services (ARNS) up to 600 km from TV and up to 400 km from MS stations Up to 2004 (RRC04), there were no requirements for coordination of ARNS stations. DVB-T, Digital dividend and stations of ARNS
17 Coordination in the MHz & MHz bands: - Between base stations of MS (LTE vs. LTE) –Stations of MS and ARNS (LTE vs. ARNS) Agreement came into force on 1 January 2013.
18 ARNS at the western border of Lithuania (registered in MIFR)
19 ARNS operating under umbrella of DVB-T stations in TV channels 67 and 69 at the western border of Lithuania
20 Impact of LTE network (model) BS on stations of ARNS. Cells R=8 km, P=55 dBm
21 Method of calculations The field strength is calculated by power sum method: E sum cumulative field strength; E i the field strength produced by i-base stations; n number of base stations. ITU – R. P Recommendations 1546, 525.
22 The dependence of cumulative field strength value of LTE network from the number of BS The frequency of all BS: ν = 826 MHz
23 Real network of MS (GSM) in the area of Kaliningrad district
24 Impact of the real network LTE BS on ARNS, network up to 30 km. R = 30 km
25 Impact of the real network LTE BS on ARNS, network up to 50 km. R = 50 km
26 Impact of the real network LTE BS on ARNS, network up to 70 km. R = 70 km
27 The field strength of a theoretical model of LTE network and a real one with a different radius Field strength of a theoretical model of LTE network Field strength of a real LTE network with a different radius Radius of the network30 km50 km70 km The number of LTE BS Chernyahovsk RSBN 31dB(µV/m)29 dB(µV/m)30 dB(µV/m) Donskoye RSBN 31 dB(µV/m)32 dB(µV/m)35 dB(µV/m)37 dB(µV/m) Khabrovo RSBN 32,5 dB(µV/m)34 dB(µV/m) 35 dB(µV/m) Nivenskoye RSBN 24 dB(µV/m)21 dB(µV/m)22 dB(µV/m)
28 Impact of terminal equipment on receivers of ARNS on aircrafts
29 Impact of terminal equipment on a receiver of ARNS on aircraft. Initial conditions: Height of LTE terminal stations h 1, m1,5 The isotropic effective radiated power of LTE terminal stations EIRP, dBm 23 The density of LTE terminal stations ρ, numb./km 2 0,17 (rural areas); 3 (urban) The height of receivers of ARNS in an aircraft h, km 10 The allowable value of interference field strength for the receiver of aircraft E aps 72 dB(µV/m)
30 Impact of terminal equipment on a receiver of ARNS on aircraft. E 72 dBμV/m
31 Coordination criteria: on the border line and at the location of ARNS Restrictions of electromagnetic field strength on the border line depending on geographical longitude (antenna high 10m): –till 21º 07 –from21º 07 till 22º 34 or –from 22º 34 Buffer zones: –e.i.r.p 55dBm/5MHz (till 60km); 55dBm/5MHz or 58dBm/5MHz (60-100km distance) –Effective antenna high (h eff ) h eff = 60m (iki 60km) –BS density 1BS/100km 2 ; 10BS/100km 2 ; 100BS/100km 2 or 50BS/100km 2
32 Results : Restrictions on the LTE
36 Impact of ARNS on LTE RECOMMENDATION ITU-R M.1830 (1) Type of station Characteristics RSBNRLS 2 (Type 2)RLS 1 (Type 1)RLS 1 (Type 2) ApplicationAir-to-Ground Secondary radars – Type 2 Primary radars – Type 1 Primary radars – Type 2 Transmitter characteristics Station name Aircraft transmitterGround radar transmitter Place of station AircraftAirfields Maximum effective radiated pulse power (e.r.p.) (dBW) Pulse power (dBW) Mean power (dBW) Off-duty ratio Pulse repetition cycle (ms) Pulse length (μs) Necessary emission bandwidth (MHz) 3/ Operating frequencies (MHz) 792, 796, 800, 804, , 836, , 835, 836, , 847, 853, 859 Antenna height (m) Maximum antenna gain (dBi) Antenna pattern ND 3 dB beamwidth: vert. pl. = 45° hor. pl. = 3-5° 3 dB beamwidth: vert. pl. = 45° hor. pl. = 4° Direction of antenna main beamLower hemisphereAzimuth: 0-360° Revolution speed 10 rev/min Azimuth: 0-360° Revolution speed 6/10 rev/min
37 ECC Report 174. COMPATIBILITY BETWEEN THE MOBILE SERVICE IN THE BAND MHz AND THE RADIODETERMINATION SERVICE IN THE BAND MHz
Impact of radar on the LTE base station ( ECC Report 174 ) Required additional isolation needed for interference from radar type 2 to LTE BS
39 … VoIP is very sensitive to packet loss, delay …100 ms, delays greater than 200 ms are noticeable to the end users. …it is impossible for LTE to provide a wide range of services with an acceptable QoS
40 Possible impact of ARNS RLS type 2 on LTE BS ITU-R.P , T=10%, L=50%. Gr=18 dB, h=60m, C/I=-6dB, Ps1=-98 dBm; Ps2=-115 dBm, (E1=21 dBuV/m, E2=4 dBuV/m) for radar mean power: Ptr=19.5 dBW,
41 Possible impact of ARNS RLS type 2 on LTE BS ITU-R.P , T=10%, L=50%, Gr=18 dB, h=60m, C 1 /I=- 6dB,C 2 /I =0, Ps=-98 dBm; (E 1 =21 dBuV/m, E 2 =27 dBuV/m) for radar pulse power Ptr=52.5 dBW,
42 How many Digital dividends should we take into account? Digital dividend 1 (DD1) channels ( MHz) Digital dividend 2 (DD2) channels ( MHz). Digital dividend 3 (DD3)?
43 WRC-2012 results
44 Impact of digital dividends After DD1, 8 networks left from 9 given according to Geneva 06 Plan: –4 in use –2 beauty tenders announced at the end of 2011 –1 network is assigned for national radio and television (LRT) –1network in VHF frequency band (to be licensed) After DD2, 5½ networks: –<2 in use –1.5 for tender –Panevėžys, Biržai, Utena, Alytus and Kaunas allotments left –LRT full network –VHF full network.
45 The consequencies of the DD2 for 2 new networks NAT 5
46 The consequencies of the DD2 for LRTC network 1
47 The consequencies of the DD2 for LRTC network 2
48 The consequencies of the DD2 for TEO LT network 1
49 The consequencies of the DD2 for TEO LT network 2
50 Remaining channels for LRTC LRTC 2 LRTC 1
51 Remaining channels for TEO LT TEO 2 TEO 1
52 Disappearing channels and allotments after DD2 Two assignments in Vilnius on TV channels: 60, 53
53 The consequencies of the DD for HNG (using the MHz band for mobile)
54 The consequencies of the DD for HNG (using the MHz band for mobile)
55 Problems with the coordination of new DVB-T stations or allotments. 1. Dividend channels did not spread equally over countries. Small countries feel this disbalance stronger. Tension among the countries are already programmed. 2. Procedures of GE06 are very soft. Trigger value Y for coordination. 3. Different impact of ARNS on LTE and DVB-T. 4. New conference?
56 Conclusions Up to mid-2022, DVB-T is licensed in the band MHz. For preparation of MS in 700 MHz band: Need to investigate impact of ARNS on LTE. Need to revise coordination procedures and criteria of GE06 agreement. Arrange regional planning conference within CEPT.