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

3

Start in 2002 regular:2004 MPEG-2 2006 06 01MPEG-4DVB-T,

64-QAM

CR=3/4

LP=90%

Coverage:

territory:86,9%

population:95%

32 stations

Current situation. 4 DVB-T networks: LRTC network 1 (2011-11-16)

4

27 stations

64-QAM

CR=3/4

LP=90%

Coverage:

territory:86,6%

population:95%

LRTC network 2 (2011-11-16)

5

Network deployed by the company Toptronas

24 stations

64-QAM

CR=3/4

LP=90%

Coverage:

territory:82,1%

population:92%

TEO LT network 1 (2011-11-16)

6

6 stations

64-QAM

CR=3/4

LP=90%

Coverage:

territory:58,8%

population:75%

Calculation method

TEO LT network 2 (2011-11-16)

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 57 Channel 60

8

Measurements

A view inside the car

9

LTV programme, fixed reception receivers Kaon S660HD, Salteka

marking

View good crumbled No view

Number of settlements

447 16 12 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

1 0

5 5 4

13 13

2023

36 35

47

60

51

44

73

62

51

41

23

10 118

5 4

0

10

20

30

40

50

60

70

80-1

9,3

-17,

8

-16,

2

-14,

6

-13,

1

-11,

5

-9,9

-8,3

-6,8

-5,2

-3,6

-2,1

-0,5 1,1

2,7

4,2

5,8

7,4

8,9

10,5

12,1

13,7

15,2

16,8

18,4

nu

meb

er o

f mea

sure

men

ts, n

o

ratio of field strength measured values with calculated values, in dB

LRTC network 1

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 1LRTC 2TEO 1TEO 2

NAT 5NAT 6LRT

13

Digital dividend 1 (DD1) 61-69 TV channels (790-862 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 2012.

From 1 January 2013 – the 800 MHz band, article 6 paragraph 3.

14

Channel arrangement for ECN in the 790-862 MHz frequency band

15

Digital dividend I (TV channels 61-69)

63

65

63

64

6562

6164

65

61

34 55 57

33 45

23 27

26 38

22 30

29 37 56

58

37 54

23 27

42 56

36

53

5247

403025

31 43 48

50 57

28 33 35

45 52

21 28 39

44 59

25 32 36

42 49

22 24 41

51

29 38 46

50 60

63

65

63

64

65

62

6164

65

61 26

16

21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69

- TV KANALAI - RSBN ir kitos sistemos

Requirements for protection of Requirements for protection of registered stations of other primary registered stations of other primary serviceservicess (ARNS) up to (ARNS) up to 600 km600 km from TV from TV and and up to up to 400 km 400 km from MS stationsfrom MS stations

Up to Up to 2004 2004 ((RRC04),RRC04), there were no there were no requirements for coordination of requirements for coordination of ARNS ARNS stationsstations..

DVB-T, Digital dividend and stations DVB-T, Digital dividend and stations of ARNS of ARNS

17

Coordination in the 791-821 MHz & 832-862 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:

Esum — cumulative field strength;

Ei — the field strength produced by i-base stations;

n — number of base stations.

ITU – R. P Recommendations 1546, 525.

n

i

Esum

iE )10/(10lg10

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 network 30 km 50 km 70 km

The number of LTE BS 41 169 400 703

Chernyahovsk RSBN31dB(µV/m) 29 dB(µV/m) 30 dB(µV/m) 30 dB(µV/m)

Donskoye RSBN31 dB(µV/m) 32 dB(µV/m) 35 dB(µV/m) 37 dB(µV/m)

Khabrovo RSBN32,5 dB(µV/m) 34 dB(µV/m) 34 dB(µV/m) 35 dB(µV/m)

Nivenskoye RSBN24 dB(µV/m) 21 dB(µV/m) 22 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 station’s h1, m 1,5

The isotropic effective radiated power of

LTE terminal station’s EIRP, dBm23

The density of LTE terminal stations ρ,

numb./km2

0,17 (rural areas);

3 (urban)

The height of receivers of ARNS in an

aircraft h, km10

The allowable value of interference field

strength for the receiver of aircraft Eaps 72 dB(µV/m)

30

Impact of terminal equipment on a receiver of ARNS on aircraft. E ≤ 72 dBμV/m

2500 3500 4500 5500 6500 7500 8500 9500 1050011500125001350055

56

57

58

59

60

61

62

63

64

65

66

67

68

69

70

71

72

E, d

B(

V/m

)

n

1 2 3

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′ (53dBµV/m@5MHz)

– from 21º 07′ till 22º 34′ (57dBµV/m@5MHz or 58dBµV/m@5MHz)

– from 22º 34′ (58dBµV/m@5MHz)

• Buffer zones:– e.i.r.p

• 55dBm/5MHz (till 60km); 55dBm/5MHz or 58dBm/5MHz (60-100km distance)

– Effective antenna high (heff)• heff = 60m (iki 60km)

– BS density

• 1BS/100km2; 10BS/100km2; 100BS/100km2 or 50BS/100km2

32

Results : Restrictions on the LTE

33

34

35

36

Impact of ARNS on LTE RECOMMENDATION ITU-R M.1830 (1)

Type of station

CharacteristicsRSBN RLS 2 (Type 2) RLS 1 (Type 1) RLS 1 (Type 2)

Application “Air-to-Ground” Secondary radars –Type 2

Primary radars –Type 1

Primary radars –Type 2

Transmitter characteristics

Station name Aircraft transmitter Ground radar transmitter Ground radar transmitter Ground radar transmitter

Place of station Aircraft Airfields Airfields Airfields

Maximum effective radiated pulse power (e.r.p.) (dBW)

30.5 69.5 82 82

Pulse power (dBW) 27 40 52.5 52.5

Mean power (dBW) 0.5 19.5 19.5 19.5

Off-duty ratio 447 112 1 995 1 995

Pulse repetition cycle (ms) 2.3 1.8 1.8 1.8

Pulse length (μs) 5.1 16 0.9-2 0.9-2

Necessary emission bandwidth (MHz)

3/0.7 3 6 3

Operating frequencies (MHz) 792, 796, 800, 804, 808 835, 836, 837.5 833, 835, 836, 858 844, 847, 853, 859

Antenna height (m) 0-10 000 10 10 10

Maximum antenna gain (dBi) 3.5 29.5 29.5 29.5

Antenna pattern ND 3 dB beamwidth:vert. pl. = 45°hor. pl. = 3-5°

3 dB beamwidth:vert. pl. = 45°hor. pl. = 4°

3 dB beamwidth:vert. pl. = 45°hor. pl. = 4°

Direction of antenna main beam Lower hemisphere Azimuth: 0-360°Revolution speed10 rev/min

Azimuth: 0-360°Revolution speed6/10 rev/min

Azimuth: 0-360°Revolution speed6/10 rev/min

37

ECC Report 174. COMPATIBILITY BETWEEN THE MOBILE SERVICE IN THE BAND 2500-2690 MHz AND THE RADIODETERMINATION SERVICE IN THE BAND 2700-2900 MHz

38

6.2 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 BSITU-R.P. 1546-3, 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. 1546-3, T=10%, L=50%, Gr=18 dB, h=60m, C1/I=-6dB,C2 /I =0, Ps=-98 dBm; (E1=21 dBuV/m, E2=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)

61-69 channels (790-862 MHz)

• Digital dividend 2 (DD2)

49-60 channels (694-790 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

52

50 5759

495150 60

52

52

50 5759

495150 60

52

52

50 5759

495150 60

52

52

50 5759

495150 60

52

52

50 5759

495150 60

52

52

50 5759

495150 60

52

52

50 5759

495150 60

52

52

50 5759

495150 60

52

55 57

56 58

5456

53

55 57

56 58

5456

53

55 57

56 58

5456

53

55 57

56 58

5456

53

Two assignments in Vilnius on TV channels: 60, 53

53

The consequencies of the DD for HNG (using the 694-862 MHz band for mobile)

Allotment/network A B C D E F G

Remaining channels int he

particular allotment areas

VAS 38 58 49 32 33 68 X 3

SOP 42 40 49 32 33 68 25 5

GYO 42 35 46 51 22 61 25 5

VES 57 35 46 51 22 61 64 3

KOM 26 29 59 X 41 63 64 3

FEJ 30 29 59 43 40 63 X 4

ZALSOM 24 55 54 31 41 65 60 3

PES 38 55 34 24 41 62 58 4

NOG 38 55 46 24 36 62 X 4

HEV 56 39 44 53 36 66 69 3

C 56 39 34 53 36 66 58 3

SZ 56 30 59 53 36 66 64 2

AGG 45 31 28 35 48 63 68 5

TOK 60 31 43 35 26 63 68 4

SZA 58 38 24 34 41 67 52 4

HAJ 51 46 29 49 32 62 40 4

BEK 38 22 37 54 23 65 41 5

CSO 31 22 26 57 23 65 60 4

KISCSA 27 45 28 25 42 68 33 6

BARTOL 52 37 49 47 50 67 32 3

54

The consequencies of the DD for HNG (using the 694-862 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 470-790 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.

57

Thank you