LTE - Digital Terrestrial TV (DTT) Coexistance: Brief Update Regulatory & Industry group status

1. LTE / DVB Coexistence
finding compromise
towards
Internet of Everything
Regulatory & Industry Alliance
State-of-Art (SoA) / Status
Update Q1’2013
Thierry Lestable (MS’97, Ph.D’03)
Technology & Innovation Manager, Sagemcom

2. Disclaimer
• Besides Sagemcom SAS’, many 3rd party
copyrighted material is reused within this
brief tutorial under the ‘fair use’ approach,
for sake of educational purpose only,
and very limited edition.
• As a consequence, the current slide set
presentation usage is restricted, and is
falling under usual copyright usage.
• Thanks for your understanding!
2
© Thierry Lestable, 2012

3. LTE/DVB Coexistence Issues
Source: Bundesnetzagentur

4. User Equipment (UE) / Mobile Terminal (MT) Requirements
3GPP

5. 3GPP Requirements: UE
Channel 1.4 3.0 5 10 15 20
bandwidth MHz MHz MHz MHz MHz MHz
∆fOOB (MHz) 2.8 6 10 15 20 25
Spectrum Emission Mask (SEM)
Spectrum emission limit (dBm)/ Channel bandwidth
∆fOOB 1.4 3.0 5 10 15 20 Measurement
(MHz) MHz MHz MHz MHz MHz MHz bandwidth
± 0-1 -10 -13 -15 -18 -20 -21 30 kHz
± 1-2.5 -10 -10 -10 -10 -10 -10 1 MHz
± 2.5-2.8 -25 -10 -10 -10 -10 -10 1 MHz
± 2.8-5 -10 -10 -10 -10 -10 1 MHz
± 5-6 -25 -13 -13 -13 -13 1 MHz
± 6-10 -25 -13 -13 -13 1 MHz
± 10-15 -25 -13 -13 1 MHz
± 15-20 -25 -13 1 MHz
± 20-25 -25 1 MHz
Source: 3GPP TS 36.101 V11.3.0 (2012-12)

6. 3GPP Mobile (UE)
Requirements - Example
(P=23dBm)
Thanks to Dr.M.Lalam for curves

7. 3GPP SEM – Additional
Requirements
NS_03 NS_04
Spectrum emission limit (dBm)/ Channel bandwidth Spectrum emission limit (dBm)/ Channel bandwidth
∆fOOB 1.4 3.0 5 10 15 20 Measurem ∆fOOB 1.4 3.0 5 10 15 20 Measurem
(MHz) MH MHz MHz MHz MHz MHz ent (MHz) MHz MHz MHz MHz MHz MHz ent
z bandwidth bandwidth
± 0-1 -10 -13 -15 -18 -20 -21 30 kHz ± 0-1 -10 -13 -15 -18 -20 -21 30 kHz
± 1-2.5 -13 -13 -13 -13 -13 -13 1 MHz ± 1-2.5 -13 -13 -13 -13 -13 -13 1 MHz
± 2.5- -25 -13 -13 -13 -13 -13 1 MHz ± 2.5- -25 -13 -13 -13 -13 -13 1 MHz
2.8 2.8
± 2.8-5 -13 -13 -13 -13 -13 1 MHz ± 2.8-5 -13 -13 -13 -13 -13 1 MHz
± 5-6 -25 -13 -13 -13 -13 1 MHz ± 5-6 -25 -25 -25 -25 -25 1 MHz
± 6-10 -25 -13 -13 -13 1 MHz ± 6-10 -25 -25 -25 -25 1 MHz
± 10-15 -25 -13 -13 1 MHz ± 10-15 -25 -25 -25 1 MHz
± 15-20 -25 -13 1 MHz ± 15-20 -25 -25 1 MHz
± 20-25 -25 1 MHz ± 20-25 -25 1 MHz
NS_06/NS_07
Spectrum emission limit (dBm)/ Channel bandwidth
∆fOOB 1.4 3.0 5 10 Measurement
(MHz) MHz MHz MHz MHz bandwidth
± 0-0.1 -13 -13 -15 -18 30 kHz
± 0.1-1 -13 -13 -13 -13 100 kHz
± 1-2.5 -13 -13 -13 -13 1 MHz
± 2.5-2.8 -25 -13 -13 -13 1 MHz
± 2.8-5 -13 -13 -13 1 MHz
± 5-6 -25 -13 -13 1 MHz
± 6-10 -25 -13 1 MHz
± 10-15 -25 1 MHz

8. Adjacent Channel Leakage
Ratio (ACLR) ∆fOOB E-UTRA channel
E-UTRAACLR1 UTRA ACLR2 UTRAACLR1
RB
Spurious Emissions
Frequency Range Maximum Level Measurement Bandwidth
9 kHz ≤ f < 150 kHz -36 dBm 1 kHz
150 kHz ≤ f < 30 MHz -36 dBm 10 kHz
30 MHz ≤ f < 1000 MHz -36 dBm 100 kHz
1 GHz ≤ f < 12.75 GHz -30 dBm 1 MHz

9. 3GPP Mobile (UE)
Requirements - Spurious
emission band UE co-existence
Table 6.6.3.2-1: Requirements
Spurious emission
E-UTRA Band Protected band Frequency range (MHz) Maximum Level MBW Note
(dBm) (MHz)
20 E-UTRA Band 1, 3, 7, 8, 20, 22,
FDL_low - FDL_high -50 1
33, 34, 43
E-UTRA Band 20 FDL_low - FDL_high -50 1 15
E-UTRA Band 38, 42 FDL_low - FDL_high -50 1 2
NOTE 2: As exceptions, measurements with a level up to the applicable requirements defined in Table 6.6.3.1-2 are permitted for
each assigned E-UTRA carrier used in the measurement due to 2nd, 3rd, 4th [or 5th] harmonic spurious emissions. An
exception is allowed if there is at least one individual RB within the transmission bandwidth (see Figure 5.6-1) for which
the 2nd, 3rd or 4th harmonic totally or partially overlaps the measurement bandwidth (MBW).
NOTE 15: These requirements also apply for the frequency ranges that are less than ∆fOOB (MHz) in Table 6.6.3.1-1 and Table
6.6.3.1A-1 from the edge of the channel bandwidth.
3GPP TS 36.101 V11.3.0 (2012-12)

10. LTE MS - Baseline
Requirements – EIRP limits /
DTT
In-Band
23dBm
OOB limits
Source: CEPT report 30

11. 3GPP Mobile (UE)
Requirements - Band 20
Table 6.2.2-1: UE Power Class
EUTRA Class 1 Tolerance Class 2 Tolerance Class 3 Tolerance Class 4 Tolerance
band (dBm) (dB) (dBm) (dB) (dBm) (dB) (dBm) (dB)
20 23 ±2 2
NOTE 2: 2 refers to the transmission bandwidths (Figure 5.6-1) confined within FUL_low and FUL_low + 4 MHz or FUL_high –
4 MHz and FUL_high, the maximum output power requirement is relaxed by reducing the lower tolerance limit by
1.5 dB
3GPP TS 36.101 V11.3.0 (2012-12)

12. LTE BS (eNB) - Baseline
Requirements – EIRP limits / DTT
Source: CEPT report 30

13. 3GPP Base Station (eNB)
Requirements - DTT Protection
Table G-1: EIRP limits for protection of broadcasting (DTT) service
Case Measurement filter centre Condition on BS Maximum Level Measurement
frequency maximum aggregate EIRP PEIRP,N,MAX Bandwidth
/ 10 MHz, PEIRP_10MHz
(Note)
A: for DTT N*8 + 306 MHz, PEIRP_10MHz ≥ 59 dBm 0 dBm 8 MHz
frequencies where 21 ≤ N ≤ 60
broadcasting is N*8 + 306 MHz, 36 ≤ PEIRP_10MHz < 59 dBm PEIRP_10MHz – 59 dBm 8 MHz
protected 21 ≤ N ≤ 60
N*8 + 306 MHz, PEIRP_10MHz < 36 dBm -23 dBm 8 MHz
21 ≤ N ≤ 60
B: for DTT N*8 + 306 MHz, PEIRP_10MHz ≥ 59 dBm 10 dBm 8 MHz
frequencies where 21 ≤ N ≤ 60
broadcasting is N*8 + 306 MHz, 36 ≤ PEIRP_10MHz < 59 dBm PEIRP_10MHz – 49 dBm 8 MHz
subject to an 21 ≤ N ≤ 60
intermediate level of N*8 + 306 MHz, PEIRP_10MHz < 36 dBm -13 dBm 8 MHz
protection 21 ≤ N ≤ 60
C: for DTT N*8 + 306 MHz, N.A. 22 dBm 8 MHz
frequencies where 21 ≤ N ≤ 60
broadcasting is not
protected
NOTE: PEIRP_10MHz (dBm) is defined by the expression PEIRP_10MHz = P10MHz + Gant + 10*log10(Nant )
3GPP TS 36.104 V11.3.1 (2013-01)

14. 3GPP Base Station (eNB)
Requirements
Table 6.2-1: Base Station rated output power
BS class PRAT
Wide Area BS - (note)
Medium Range BS < + 38 dBm
Local Area BS < + 24 dBm
Home BS < + 20 dBm (for one transmit antenna port)
< + 17 dBm (for two transmit antenna ports)
< + 14dBm (for four transmit antenna ports)
< + 11dBm (for eight transmit antenna ports)
NOTE: There is no upper limit for the rated output power of the Wide Area Base
Station.
3GPP TS 36.104 V11.3.1 (2013-01)

15. 3GPP Base Station (eNB)
Requirements - Transmitter RF
Spectrum
Wide Area BS - Category B (Option 1) - Band 20
Table 6.6.3.2.1-3: General operating band unwanted emission limits for 5, 10, 15 and 20 MHz channel bandwidth
(E-UTRA bands <1GHz) for Category B
Frequency offset of Frequency offset of Minimum requirement (Note 1) Measurement
measurement measurement filter centre bandwidth (Note
filter -3dB point, ∆f frequency, f_offset 4)
0 MHz ≤ ∆f < 5 MHz 0.05 MHz ≤ f_offset < 5.05 MHz 100 kHz
7  f _ offset 
− 7 dBm − ⋅  − 0.05  dB
5  MHz 
5 MHz ≤ ∆f < 5.05 MHz ≤ f_offset < -14 dBm 100 kHz
min(10 MHz, ∆fmax) min(10.05 MHz, f_offsetmax)
10 MHz ≤ ∆f ≤ ∆fmax 10.05 MHz ≤ f_offset < -16 dBm (Note 6) 100 kHz
f_offsetmax
NOTE 1:For a BS supporting non-contiguous spectrum operation the minimum requirement within sub-block gaps
is calculated as a cumulative sum of adjacent sub blocks on each side of the sub block gap. Exception is
Df ≥ 10MHz from both adjacent sub blocks on each side of the sub-block gap, where the minimum
requirement within sub-block gaps shall be -16dBm/100kHz.
3GPP TS 36.104 V11.3.1 (2013-01)

16. 3GPP Base Station (eNB)
Requirements - Example
(P=43dBm)
Thanks to Dr.M.Lalam for curves

17. Dynamics / Influence of LTE UE’s Mode of operation
OFCOM

18. LTE Power Spectral Density
variations
Source: Real Wireless for Ofcom (Feb.2012)

19. Measurement Example from
LTE UE in Block
C(UK)/D(France) – 850MHz
Source: Ofcom (August 2012)

20. LTE UE – Measurements
Pmax: 23dBm
BW: 10MHz
50 RBs
Block C (UK)
@857MHz
16QAM
Source: Ofcom (August 2012)

21. LTE UE - Differences between
Block B & C
Source: Ofcom (August 2012)

22. LTE UE – near / Far influence
onto OOB
Source: Ofcom (August 2012)

23. LTE UE – direct influence of
Required Throughput (RB usage)
onto OOB
Source: Ofcom (August 2012)

24. LTE UE – Influence of RB
(Throughput) onto Emission mask
Source: Ofcom (August 2012)

25. Estimation of Separation distance between LTE UE and DTT
device
OFCOM

26. LTE Uplink interference
towards DTT Rx – Use cases
Fixed Roof-top DTT reception Set-Top DTT reception
Source:Ofcom (Feb.2012)

27. Protection Ratio (PR) –
Interference – Example/Link budget
ITU-R 419-3
Source:Ofcom / Real Wireless (Feb.2012)

28. Protection Ratio (PR) –
Interference – Example/Link budget
Source:Ofcom (Feb.2012)

29. Minium Separation distance
(m): DTT @786MHz
100% LTE Interference Activity 10% LTE Interference Activity
Source:Ofcom (Feb.2012)

30. Minium Separation distance
(m): DTT @786MHz, 100% LTE
Source:Ofcom (Feb.2012)

31. Estimation of Separation distance between LTE UE and DTT
device
EN 55020

32. CENELEC - EN 55020/2007
Source: EN 55020 - 2007

33. CENELEC - EN 55020/A11
Source: Amendment A11, July 2012

34. LTE Protection Ratios for DVB-T & DVB-T2
ITU-R

35. ITU-R – Protection Ratio for
DVB-T2 / LTE UE (1/2)
Un-corrected
Source: ITU-R (Nov.2012)
WP6A

36. ITU-R – Protection Ratio &
overload for DVB-T2 / LTE UE (2/2)
Source: ITU-R (Nov.2012)
WP6A

37. ITU-R – Correction Factors to
be applied Vs DVB-T2 variants
Source: ITU-R (Nov.2012)
WP6A

38. ITU-R: RECOMMENDED Protection
Ratio (PR) & Overload Threshold
(Oth)
To be used for sharing studies (Mix of different tuners categories)
Source: ITU-R (Nov.2012)
WP6A

39. ITU-R Tuners types /
Categories

40. Identification of issues & solutions proposals
DIGITAL EUROPE

41. DTT – Categories of Radiated &
conducted interferences (1/2)
Source: Digital Europe, Dec.2012
Low-Pass Filter
AGC

42. DTT – Categories of Radiated &
conducted interferences (2/2)

43. Joint Working Group (JWG) on Digital Dividend (DD) - Proposals
ETSI/CENELEC

44. CENELEC – ETSI 2011: Joint
Working Group (JWG) on Digital
Dividend
http://docbox.etsi.org/Etsi_Cenelec/PUBLI
C%20FOLDER%20on%20DD/
Source: CENELEC/ETSI

45. NorDig v2.0 – immunity UHF
Source: CENELEC/ETSI

46. EN 55020 – Analog Immunity
RF Voltage
Source: CENELEC/ETSI

47. EN 55020 – DVB-T immunity
RF Voltage
Source: CENELEC/ETSI

48. D-Book – immunity UHF
Source: CENELEC/ETSI

49. D-Book 7, v1 – 2011 / v2 - 2012
DTG-UK

50. D-Book 7 (DTG)
(1/4)
•“The exact mechanism for this is not yet understood, but
•Digital Book 7, part A it is thought that it may be caused by disturbances to the
receiver's automatic gain control (AGC) circuitry
• Section 9.14.2.1 resulting from the time-varying LTE signal. Equally, it
has been seen that some well-designed receivers are
‘Interference from LTE virtually immune to the differences between the constant
power signals and the time-varying signals.
Signals’
•To minimise the risk of disturbance to television
reception, it is very important therefore that receiver
designers ensure that their implementations are
unaffected by such time-varying LTE signals. The rest
of this section first describes the interference
environment, and then some preliminary tests.
•Note that these tests are considered preliminary at
this stage, so it may be considered necessary to change
them in the near future. For the avoidance of doubt,
these LTE protection ratios are the values that will be
used for testing new receivers, but it should be
remembered that some older receivers already
deployed may have significantly worse performance in
this respect.”
V1, March 2011 / V2, March 2012

51. D-Book 7 (DTG)
(2/4)
LTE interference test conditions •Worst cases for
interferences:
-Low activity (BS/UE)
- Time-varying signal
enveloppe
Preliminary LTE interference test tolerances
-DTT receiver architecture
- CAN tuner (super-
heterodyne): band C
worst
- Si Tuner: Band A worst

52. D-Book 7 (DTG): DVB-T/T2
Modulation Modes (3/4)
DVB-T
DVB-T2

53. D-Book 7 (DTG): LTE Tests
arrangements (4/4)
BS (eNodeB) UE/Terminal

54. Unified NorDig v2.4, 2013
NORDIG

55. NorDig v2.4
Orange FR DD frequencies
NorDig
requirements
are the most
demanding!
Even harder
than DTG
(UK)
January 2013 Table 3.17, p.51

56. Special Focus in France
LTE AUCTIONS

57. France
@2,6GHz
@800MHz
Trials in 2012
Lille
Marseille Lyon
Mass Commercial Launch in 2013
N.B1: deployment @800MHz expected to be slow due to frequency plan from ANFR + potential issues with Digital TV
N.B2: @2.6GHz, still issues with some geographical locations
N.B3: @1800 MHz, Waiting for Official Answer from ARCEP to allow Bouygues Telecom to refarm its 1800MHz with LTE

58. France – Digital Dividend LTE
allocation
Orange FR DD frequencies
(Ofcom & DTG-UK)
Mapping

59. CONCLUSIONS & WAY-
FORWARD

60. NXP Tuners Released
Report 148
Nov.2012
D-Book 7, v1 D-Book 7, v2
Jun.2010 Jan.2013
TDA 18218 TDA 18212* Mar.2011 Mar.2012 TDA 18214
08/07/2009 26/08/2010 11/02/2013
Jul.2012
Strong Immunity
to LTE & WLANS
EN 55020/A11 Claimed by NXP
Feb.2011
Dec.2012
JWG DD
*SW upgrade feasible to reach DTG & NorDig Requirements

61. Open Discussions w.r.t
Standard & Certification
Strategy
•Strategy/approach
•EN 55020 i)EMC Directives
i)Amendment to cover all Types of ii)Voluntary & applied Certification
DVB receivers, not only cable? System (e.g. NorDig, D-Book, …)
ii)CISPR 35 proposal: prEN55035
i) 3V/m to be relaxed to 1V/m?
ii) Whole band [470-862]
instead of [790-862]?

62. Thanks for your attention…
Any Question, any interest in Internship and/or Job
application:
Thierry.lestable@sagemcom.com