Renato Lombardi - ETSI ISG mWT - UK SPF C2

© ETSI 2016. All rights reserved
ETSI ISG MWT (MILLIMETER WAVE TRANSMISSION)
UK Spectrum Policy Forum – mmWave Spectrum Access and Use
Renato Lombardi Chairman of ISG mWT London, July 13th 2017

© ETSI 2016. All rights reserved
AGENDA
1. ISG mWT Completed Activities
2. ISG mWT Activities in Progress
a) Analysis of 26 GHz spectrum use by FS and co-existence with 5G Access
b) V-Band, 3D Ray-Tracing Interference Analysis for PtMP systems based on IEEE
802.11ad
c) Band and Channel Aggregation
d) W-Band and D-Band
e) Millimetre Wave Transmission Scenarios For Future Access Applications

ISG mWT Completed Activities
 Maturity and field proven experience of millimetre-wave transmission Ericsson
 Applications and use cases of millimetre-wave transmission DT
 Overview on V-band and E-band worldwide regulations Nokia
 V-band street level interference analysis Huawei
(products compliant with ETSI TM4 Fixed Services Harmonized standards)
 Millimetre-wave semiconductor Industry technology status and evolution Infineon
 Antennas RFS
 Opinions on 5G mmWave spectrum usage ISG mWT

Introduction
 This coexistance analysis aims at giving a first indication about the sharing of
26 GHz band between 5G mobile access and FS
 The evaluation is based on just one of the scenarios foreseen in IMT2020,
the Outdoor sub-urban open space BS antenna at 15 m [“Characteristics of
terrestrial IMT systems for frequency sharing/interference analysis in the frequency
bands between 24.25 GHz and 86 GHz” sent by ITU-R WP5D to TG5/1 (5-1/36,
Attachment 2)].
 Coexistence analysis with full consideration of the IMT2020 scenarios is in
progress within CEPT ECC PT1, with FS parameters under evaluation by CEPT
ECC SE19

Services in 26 GHz band
• This band is mainly allocated to fixed links –all responding administration have fixed
service allocations in at least part of the band.
• Other allocations in some administrations include EESS, space research, inter-
satellite links, fixed satellite (Earth-space), short range devices, short range radar,
mobile, radiodetermination, SAP/SAB and ENG/OB.
• 12 administrations note heavy usage (>1000 links or nationwide licences) for
fixed links (mainly point-to-point, some point-to-multipoint). Usage is generally
noted as nationwide with higher concentrations in urban areas
Summary of responses to CEPT PT1 questionnaire on AI1.13 bands:
24,25
0
24,45
024,50
024,54
9
24,65
0
24,75
0
25,25
0
25,44
525,50
025,55
7
26,45
326,50
0
27,00
0
27,50
0
26 GHz in the Radio Regulations Region 1
FIXED
MOBILE
Standard frequency and time signal-satellite (E-to-s)
Space Research (s-to-E) 5.536C
Fixed Satellite Service (E-to-s)
Earth Exploration Satellite Service (s-E)
Inter Satellite Service
AI 1.13 24,500
24,549
25,445
25,557
26,453
26,500
Common FS bandplan: Annex B of Rec. T/R 13-02
Go/Return =1008
MHz
Mobile block ≤ 1 GHz
Not possible intra-operator
coordination of 5G mobile
and backhaul since the ‘’go’’
or ‘’return’’ channel will fall
outside the spectrum block
(whenever lower than 1 GHz)
or in the block of another
operator

5G Deployment Scenarios
Deployment at street level,
considered negligible for
interference
Object of our
coexistence analysis

5G Scenario Description
Local Interference
Near/Far Field
Almost Negligible
Far Field Interference
Definition of Compatibility
Area

Interference area (by BS) with 30 cm antenna
0
0.5
1
1.5
2
2.5
3
3.5
-10 40 90 140 190
(km)
(km)
Interferencearea
26 GHz - Antenna ETSI Mask Class 3 - Co-POL. - 30 cm diam. - 35.64 dBi Gain
Interfering TX : EIRP = 48 dBm
Wanted Rx : 256 QAM / 28 MHz Channel - Max. Interference Level = -93.52 dBm (corresponding to 3 dB degradation )
10 dB Tx Ant. Protect.
FS BTS Int.

Availability variation with frequency migration @
256 QAM
256 QAM - 99.99% 32 GHz 38 GHz
Rain (mm/h) Length (30 cm ant.) Availability (%) Availability (%) Availability (%)
30 4.4 99.99% 99.9815% 99.9606%
42 3.5 99.99% 99.9817% 99.9631%
60 2.7 99.99% 99.9815% 99.9649%
30 7.8 99.99% 99.9811% 99.9622%
42 6.1 99.99% 99.9814% 99.9643%
60 4.6 99.99% 99.8150% 99.9663%
26 GHz

16 QAM
16 QAM - 99.99% 32 GHz 38 GHz
30 8.8 99.99% 99.9784% 99.9582%
42 6.9 99.99% 99.9787% 99.9603%
60 5.1 99.99% 99.9800% 99.9643%
30 13.2 99.99% 99.9789% 99.9609%
42 10.2 99.99% 99.9796% 99.9633%
60 7.6 99.99% 99.9801% 99.9655%
26 GHz

16 QAM
16QAM -99.99% 26 GHz 80 GHz
Rain (mm/h) Length (30 cm ant.) Availability (%) Availability (%)
30 8.8 99.99 % 99.60
42 6.9 99.99 % 99.72
60 6.1 99.99 % 99.78
Length (60 cm ant.)
30 13.2 99.99 % 98.2
42 10.2 99.99 % 99.2
60 7.6 99.99 % 99.4
Migration to E band most likely implies to use Bands and Carrier Aggregation
in order to achieve sufficient availability over the same distances as 26 GHz

Preliminary conclusions from coexistence analysis
 Analysis performed indicates that sharing between 5G mobile access and FS will be
difficult due to the quite large protection distances required by FS
 It would place very tight geographical constraints to 5G deployment
 As a consequence a proper migration strategy is to be evaluated
 Possible target bands (23 Ghz, 32 GHz, 38 Ghz, E band ...)
 Possible introduction of Bands and Carrier Aggregation concept (to overcome distance
limitations of E band)
 Migration basically means a complete new link in terms of hardware and I&C, with
increased requirements by 5G in terms of capacity to be backhauled.
A new planning may be necessary:
 wider channels (from 28/56 MHz to 112 MHz)
 different topology because of more fiber penetration and new cell sites

BAND AND CARRIER AGGREGATION
 Combine the advantages of two bands with
significant differences in propagation
characteristics and licensing approaches
 Extend coverage of E-Band applications
 Service and capacity aware planning
Example Dual Band Link 15/18/23 GHz + E-Band
 BCA requires a more holistic view in which the two or
more aggregated channels are seen as a single pipe
with combined performance, both for QoS and
spectrum efficiency, much more improved than the
simple sum of them
 Fair regulatory and licensing framework for BCA
 Updating of planning tool and license application forms
dual band antenna
to save tower costs

V-Band Outdoor Use of “WiGig-based”
Products
21

Products
22

Interference Simulations and Network Performance
Analysis
for each link:
(SINR_DL, SINR_UL, SNR)
 Use cases and scenarios
 3D ray tracing simulation
 Network performance simulation
Results to be used as contribution to
CEPT ECC SE19 and SRD/MG for
coexistence analysis in order to push
V-Band usable by ‘’Short Range Devices’’

Products
24

Products
25

Products
26

D-Band First Outdoor Link (November 2016)
Electronics
Department
Politecnico di Milano (Italy)
Mathematics
Department
Link distance = 340 meters
 Ptx + 5 dBm
 Antenna gain 33 dBi
 RX th 70 dBm
 System gain 141 dB
(QPSK, 250 MHz)
 RX power (clear sky) - 60 dBm
 Fading margin 10 dB

D-Band – Trial preliminary results
 The difference between measured and estimated values is more pronounced than the previous case.
 The effect of wet radome must be investigated deeply and taken into account.
 The distribution of the Rain Drop Dimensions (DSD) is to be taken into account as well

 The attenuation caused by rain flows down from the radome ha
three different situations:
 small by droplets
 medium by rivulets
 large by continuous water film on the radome.
 These three situations depend on not only the climate
environment, but also the angle of pitch and the appearance of
radome, such as concave, plane and convex.
0 0 0 0.2 0.3
-0.2
-0.5-0.3-0.5-0.5
-1 -0.9
-1.9
-1.5-1.6-1.7
-2.3
-2 -2.2
-4.8
-4.2
-4.9
-5.7
-6.1
0 0
-0.6
0.1
-0.2-0.1
-0.6-0.6
-0.9
-1.7
-1.4
-1.8
-2.7-2.8
-1.9-2
-2.7-2.9
-3.3
-4.8-4.7
-5.5
-6.2
-7.5
-8
-6
-4
-2
0
2
0 30 40 50 60 70 80 90 100110120130140150160170180190200210220230240250
RSL reduction – Rainfall
Curve for E-band
——rain test for single Antenna EUT
 Wet radome
 Rain drop shape and size with respect
to antenna dimensions

76 156
H2O
O2
O2
H2O Rain attenuation of D-band is around
2 dB larger than E-band and almost flat
in the whole 141 to 175 GHz range
 W-Band and D-Band represent two ‘’good’’
propagation windows with low atmospheric
gas attenuation
 D-Band path loss is ‘’only’’ 6dB worse than E-
Band with a few dB flat rain attenuation

D-Band – Channel Arrangement
 Two main uses of channel raster have been
indicated:
 block based use of channels with “flexible duplexing”
or duplexer-free architecture
 use of equipment with traditional fixed duplexer
schemes
 The available bands are divided into 250 MHz
elementary channels, bundle up to 5 GHz
Free Plan: 49 x 250 MHz
174.5GHz
EESS (5.340) EESS (5.340)
130.0GHz
134.0GHz
141.0GHz
148.5GHz
151.5GHz
164.0GHz
Guardband(125MHz)
167.0GHz
Guardband(125MHz)
Guardband(125MHz)
Guardband(125MHz)
1
25
26
2
3
4
5
6
7
47
48
49
-Guardband(125MHz)
Guardband(125MHz)
1
44
45
46
2
3
4
5
6
7
23
24
43
Guardband(125MHz)
27
22
23
24
25
26
27
28
29
28
-Guardband(30MHz)
1
2
3
4
5
6
7
 Working Item #37 on D band radio frequency
channel/block arrangements for Fixed Service
systems is ongoing
 Target: to produce an ECC Recommendation
 Time plan:
 December 2017: stable draft for approval
 2nd quarter 2018: publication

Renato Lombardi - ETSI ISG mWT - UK SPF C2

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