ETSI TR 103 688 V1.1.1 (2022-05)

Intelligent Transport Systems (ITS); Study on receiver requirements in ETSI EN 302 571

DTR/ERM-TG37-275

General Information

• Status: Not Published
• Technical Committee: ERM TG37 - ERM Intelligent Transport Systems
• Current Stage: 12 - Completion
• Due Date: 20-May-2022
• Completion Date: 19-May-2022

Standards Content (Sample)

TECHNICAL REPORT
Intelligent Transport Systems (ITS);
Study on receiver requirements in ETSI EN 302 571

2 ETSI TR 103 688 V1.1.1 (2022-05)

Reference
DTR/ERM-TG37-275
Keywords
ITS, radio parameters, receiver

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ETSI
3 ETSI TR 103 688 V1.1.1 (2022-05)
Contents
Intellectual Property Rights . 6
Foreword . 6
Modal verbs terminology . 6
1 Scope . 7
1.1 Rationale for the present document . 7
1.2 Need for receiver performance requirements . 7
1.3 Scope of the present document . 7
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 8
3 Definition of terms, symbols and abbreviations . 9
3.1 Terms . 9
3.2 Symbols . 9
3.3 Abbreviations . 9
4 Study on definitions used in reference documents . 10
4.1 Introduction . 10
4.2 Existing definitions in reference documents . 11
4.2.1 Definitions in ETSI EN 302 571 . 11
4.2.2 Definitions in ETSI EG 203 336 . 11
4.2.3 Definitions in LTE-V2X ETSI TS 136 101 . 12
4.2.4 Relationship between ACS and ACR . 12
4.2.5 Sensitivity vs required throughput . 12
4.3 Definitions for use in the present document . 13
5 Study on receiver sensitivity requirements. 13
5.1 Requirements as published in reference documents . 13
5.1.1 Requirements in IEEE 802.11. 13
5.1.2 Requirements in ETSI EN 302 571 . 14
5.1.3 Requirements in 3GPP LTE Release-14 . 15
5.1.4 Requirements in IEEE 802.11bd . 15
5.1.5 Requirements in 3GPP 5G NR V2X . 15
5.2 Comparison of ITS-G5 and LTE-V2X sensitivity values . 16
5.3 Recommendations for receiver sensitivity test . 17
5.4 Example derivation of data-rate test points . 18
5.4.1 Derived data-rate test points and sensitivity limits for ITS-G5 . 18
5.4.2 Comparison between the "old" and "new" sensitivity limits for ITS-G5 . 19
5.4.3 Derived data-rate test points and sensitivity limits for LTE-V2X . 20
6 Study on receiver selectivity requirements . 21
6.1 Requirements as published in reference documents . 21
6.1.1 Requirements in IEEE 802.11. 21
6.1.2 Requirements in ETSI EN 302 571 V2.1.1 . 21
6.1.3 Requirements in 3GPP LTE Release-14 . 22
6.1.4 Requirements in IEEE 802.11bd . 23
6.1.5 Requirements in 3GPP 5G NR V2X . 23
6.2 Comparison of ITS-G5 and LTE-V2X selectivity values . 25
6.3 Recommendations for receiver ACR and AACR selectivity tests. 26
6.3.1 Test method . 26
6.3.2 ACR selectivity requirements . 26
6.3.3 AACR selectivity requirements . 27
6.3.4 Interference Signal for selectivity tests . 27
6.3.5 Data-rate test-points . 28
6.4 Example derivation of data-rate test points . 29
6.4.1 Derived data-rate test points and selectivity limits for ITS-G5 . 29
6.4.2 Comparison between the "old" and "new" selectivity limits for ITS-G5 . 29
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4 ETSI TR 103 688 V1.1.1 (2022-05)
6.4.3 Derived data-rate test points and selectivity limits for LTE-V2X . 30
7 Conclusions . 31
Annex A: 3GPP adjacent selectivity tests tables (ETSI TS 136 101) . 32
Annex B: Relationship between ACS and ACR . 33
B.1 Introduction . 33
B.2 ACS in LTE-V2X Release 14 . 33
B.3 ACR in IEEE 802.11 . 34
B.4 Relationship between ACR and ACS . 35
B.5 Comparison of LTE-V2X ACS/in-band blocking with ITS-G5 ACR/AACR requirements . 36
B.5.1 3GPP channel selectivity test parameters . 36
B.5.2 Comparison of ACS and ACR . 36
B.5.3 Comparison of in-band blocking and AACR . 40
Annex C: 3GPP Configuration A.8.2 (ETSI TS 136 101) . 45
Annex D: 3GPP Reference sensitivity level for V2X Communication (ETSI TS 136 521-1,
clause 7.3G) . 46
Annex E: Sensitivity vs required throughput . 49
Annex F: Generic receiver sensitivity limit . 50
F.1 Introduction . 50
F.2 Receiver errors . 50
F.2.1 Reason for detection errors in digital receivers . 50
F.2.2 Thermal noise . 50
F.2.3 Receiver error probability in an AWGN radio channel . 50
F.2.4 Receiver error probability for QAM signals in an AWGN radio channel . 52
F.3 Analysis of the sensitivity limits given in IEEE 802.11 . 54
F.3.1 2-PSK modulation . 54
F.3.2 Coding rate . 54
F.3.3 Symbol error rate . 55
F.3.4 Model of the IEEE 802.11 sensitivity limits . 55
F.4 Generic receiver sensitivity limits . 57
F.4.1 Generic setup and procedure for conformance tests . 57
F.4.2 A conformance test procedure for V2X communication systems . 58
F.4.3 Proposed generic receiver sensitivity limit . 58
F.4.3.1 Starting point - packet duration and packet error ratio. 58
F.4.3.2 Management overhead time . 58
F.4.3.3 Mapping of the IEEE 802.11 receiver sensitivity limits to the effective data rate . 59
F.4.3.4 Generic receiver sensitivity limits based on IEEE 802.11 . 59
F.4.3.5 Comparison of ITS-G5 and LTE-V2X sensitivity values with the generic receiver sensitivity limit . 61
Annex G: Average power level calculation . 64
Annex H: Generic receiver sensitivity test specification . 66
H.1 Test equipment for the sensitivity test . 66
H.2 Test setup for the sensitivity test . 66
H.3 Generic receiver sensitivity test . 67
H.3.1 Sensitivity test preparation . 67
H.3.2 Sensitivity test execution . 67
Annex I: Generic receiver selectivity test specification . 69
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5 ETSI TR 103 688 V1.1.1 (2022-05)
I.1 Test equipment for selectivity tests . 69
I.2 Test setup for selectivity tests . 69
I.3 Generic receiver selectivity tests . 70
I.3.1 Selectivity tests preparation . 70
I.3.2 ACR and AACR Selectivity tests execution . 71
History . 73

ETSI
6 ETSI TR 103 688 V1.1.1 (2022-05)
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Foreword
This Technical Report (TR) has been produced by ETSI Technical Committee Electromagnetic compatibility and Radio
spectrum Matters (ERM).
Modal verbs terminology
In the present document "should", "should not", "may", "need not", "will", "will not", "can" and "cannot" are to be
interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.

ETSI
7 ETSI TR 103 688 V1.1.1 (2022-05)
1 Scope
1.1 Rationale for the present document
The rationale for the present document is twofold.
Firstly, the initiative to study the possibility to include improved receiving parameters such as selectivity and sensitivity
in future releases of ETSI EN 302 571 [i.1] is based on recommendations given in ETSI EG 203 336 [i.5].
Secondly, the Harmonised Standard ETSI EN 302 571 [i.1] was first published when only a single technology was
considered for Cooperative ITS communication. Reformulation of (some of) the requirements defined in ETSI
EN 302 571 [i.1] in a technology neutral manner is therefore strongly desirable, to address the various technologies
existing today, and also future technologies.
Therefore, a new technical study item was proposed and approved: DTR/ERM-TG37-275, resulting in the present
document.
1.2 Need for receiver performance requirements
The intention of article 3.2 of Directive 2014/53/EU [i.7] in relation to a receiver is explained in recitals 10 and 11 of
the Directive, which states:
".in the case of a receiver, it has a level of performance that allows it to operate as intended and protects it against the
risk of harmful interference, in particular from shared or adjacent channels, and, in so doing, supports improvements in
the efficient use of shared or adjacent channels.
Although receivers do not themselves cause harmful interference, reception capabilities are an increasingly important
factor in ensuring the efficient use of radio spectrum by way of an increased resilience of receivers against harmful
interference and unwanted signals on the basis of the relevant essential requirements of Union harmonization
legislation."
1.3 Scope of the present document
The scope of the present document is to review requirements on the receiver sensitivity, adjacent channel rejection and
the alternate adjacent channel rejection (hereafter referred to as "receiver requirements") as defined in ETSI
EN 302 571 [i.1] with the aim:
• To analyse those receiver requirement limits and investigate if it is possible to tighten them, taking state-of-
the-art technologies into account.
• To assess the feasibility of defining such receiver requirements and associated tests for demonstrating
compliance in a technology neutral manner.
• If not feasible, to specify alternative receiver requirements and associated tests for demonstrating compliance.

ETSI
8 ETSI TR 103 688 V1.1.1 (2022-05)
2 References
2.1 Normative references
Normative references are not applicable in the present document.
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long-term validity.
The following referenced documents are not necessary for the application of the present document, they assist the user
with regard to a particular subject area.
[i.1] ETSI EN 302 571 (V2.1.1): "Intelligent Transport Systems (ITS); Radiocommunications
equipment operating in the 5 855 MHz to 5 925 MHz frequency band; Harmonised Standard
covering the essential requirements of article 3.2 of Directive 2014/53/EU".
[i.2] ETSI EN 302 663 (V1.3.1): "Intelligent Transport Systems (ITS); ITS-G5 Access layer
specification for Intelligent Transport Systems operating in the 5 GHz frequency band".
TM
[i.3] IEEE 802.11 -2016: "IEEE Standard for Information technology - Telecommunications and
information exchange between systems - Local and metropolitan area networks-Specific
requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY)
Specifications".
[i.4] ETSI TS 136 101 (V14.21.0): "LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); User
Equipment (UE) radio transmission and reception (3GPP TS 36.101 version 14.21.0 Release 14)".
[i.5] ETSI EG 203 336 (V1.2.1): "Guide for the selection of technical parameters for the production of
Harmonised Standards covering article 3.1(b) and article 3.2 of Directive 2014/53/EU".
[i.6] 3GPP TR 36.786 (V14.0.0): "Vehicle-to-Everything (V2X) services based on LTE; User
Equipment (UE) radio transmission and reception".
[i.7] Directive 2014/53/EU of the European Parliament and of the Council of 16 April 2014 on the
harmonisation of the laws of the Member States relating to the making available on the market of
radio equipment and repealing Directive 1999/5/EC, (OJ L153, 22.5.2014, p62).
[i.8] Massachusetts Institute of Technology lecture notes: "Principles of Digital Communication II".
NOTE: Available at https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-451-principles-
of-digital-communication-ii-spring-2005/readings-and-lecture-notes/MIT6_451S05_FullLecNotes.pdf.
th
[i.9] John G. Proakis: "Digital Communications", McGraw-Hill International Edition, 4 Edition, 2001.
[i.10] ETSI TS 138 101-1 (V16.7.0): "5G; NR; User Equipment (UE) radio transmission and reception;
Part 1: Range 1 Standalone (3GPP TS 38.101-1 version 16.7.0 Release 16)".
[i.11] ETSI TS 136 521-1 (V14.6.0): "LTE; Evolved Universal Terrestrial Radio Access (E-UTRA);
User Equipment (UE) conformance specification; Radio transmission and reception; Part 1:
Conformance testing (3GPP TS 36.521-1 version 14.6.0 Release 14)".
[i.12] 3GPP TR 36.785: "Vehicle to Vehicle (V2V) services based on LTE sidelink; User Equipment
(UE) radio transmission and reception".
[i.13] ETSI EN 300 328 (V2.2.2): "Wideband transmission systems; Data transmission equipment
operating in the 2,4 GHz band; Harmonised Standard for access to radio spectrum".
ETSI
9 ETSI TR 103 688 V1.1.1 (2022-05)
3 Definition of terms, symbols and abbreviations
3.1 Terms
Void.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
KB Boltzmann constant
L Sidelink allocated RB size
CRB
N Number of Resource Blocks
RB
N Number of OFDM data subcarriers
C
QAM symbol error probability
PE QAM
P Power of the Interferer
I
P Receiver sensitivity
S dBm
R Nominal data rate depending on MCS
MCS
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
rd
3GPP 3 Generation Partnership Project
th
5G 5 generation of cellular mobile communications
AACR Alternate Adjacent Channel Rejection
AACS Alternate Adjacent Channel Selectivity
AC Access Category
AC_BE Access Category Best Effort
ACR Adjacent Channel Rejection
ACS Adjacent Channel Selectivity
AIFS Arbitration InterFrame Space
AT Access Terminal
AWGN Additive White Gaussian Noise
BLER BLock Error Rate
BPSK Binary Phase Shift Keying
BW Bandwidth
CAM Cooperative Awareness Message
CR Coding Rate
CRC Cyclic Redundance Check
CW Continuous Wave
DG GROW Directorate General for Internal Market, Industry, Entrepreneurship and Small and medium-sized
enterprises (of the European Commission)
DUT Device Under Test
GNSS Global Navigation Satellite System
HARQ Hybrid Automatic Repeat Request
HD Half Duplex
IM Implementation Margin
ITS Intelligent Transport Systems
ITS-G5 Access layer technology
NOTE: As defined in ETSI EN 302 663 [i.2].
LTE Long Term Evolution
MAC Media Access Control
MCS Modulation and Coding Scheme
MMI Man Machine Interface
NC Number of (sub)Carriers
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10 ETSI TR 103 688 V1.1.1 (2022-05)
NF Noise Figure
NR New Radio
NR-V2X New Radio Vehicle-to-Everything
OFDM Orthogonal Frequency Division Multiplexing
PC5 Interface between the ITS stations used for V2X sidelink communication
PE Probability of Error
PER Packet Error Rate
PHY PHYsical layer
PRR Packet Reception Ratio
PS Sensitivity Power
PSCCH Physical Sidelink Control CHannel
PSDU PLCP Service Data Unit
PSK Phase Shift Keying
PSSCH Physical Sidelink Shared CHannel
PUSCH Physical Uplink Shared Channel
QAM Quadrature Amplitude Modulation
QPSK Quadrate Phase Shift Keying
RB Resource Block
RMC Reference Measurement Channel
RS Reference Symbol
RX Radio receiver
SA Spectrum Analyser
SCI Sidelink Control Information
SCS SubCarrier Spacing
SER Symbol Error Rate
SL SideLink
SNR Signal to Noise Ratio
S-SSB Sidelink Synchronization Signal Block
SS System Simulator
STA Station
TBS Transport Block Size
TDD Time Division Duplex
TH Temperature High
TL Temperature Low
TS Technical Specification
TX Radio transmitter
UE (3GPP) User Equipment
UTC Coordinated Universal Time
VH Higher extreme Voltage
VL Lower extreme Voltage
V2V Vehicle to Vehicle
V2X Vehicle-to-Everything
4 Study on definitions used in reference documents
4.1 Introduction
This clause intends to clarify definitions of key technical terms used in the present document. Firstly, definitions from
several reference documents are recalled. Secondly, proposal definitions for use in the present document are detailed.
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11 ETSI TR 103 688 V1.1.1 (2022-05)
4.2 Existing definitions in reference documents
4.2.1 Definitions in ETSI EN 302 571
The following italic text shows the definitions taken from ETSI EN 302 571 [i.1]. These definitions are to be
understood with the partitioning of the band into 7 channels of 10 MHz: the frequency offsets mentioned are relative to
this organization and are not generically transposable to other channel bandwidths. Also, it should be noted that the
± 50 MHz blocking offset may fall in-band, since the ITS band is 70 MHz wide. Regarding receiver sensitivity, the
assumed noise margins may have to be checked if still valid.
"Receiver selectivity is a measure of the receiver's ability to discriminate between wanted signal to which the receiver is
tuned to and unwanted signals stemming from other frequency bands. Receiver selectivity herein is comprised of:
i) adjacent channel rejection;
ii) alternate channel rejection; and
iii) blocking.
The adjacent channel rejection is a measure of the capability of the receiver to operate satisfactorily in the presence of
a signal in the adjacent channel, which differs in frequency from the wanted signal by ± 10 MHz.
The alternate channel rejection is a measure of the capability of the receiver to operate satisfactorily in the presence of
a signal in the alternate adjacent channel, which differs in frequency from the wanted signal by ± 20 MHz.
Blocking is a measure of the capability of the receiver to operate satisfactorily in the presence of a signal in frequency
band further away and it shall be tested at ± 50 MHz, ± 100 MHz, and ± 200 MHz. Blocking testing shall be performed
at least at 6 different frequency offset positions. The manufacturer of the equipment can add additional frequency
offsets positions.
Receiver sensitivity is defined as the minimum receive signal level at the antenna connector required for a given error
rate, coding rate and modulation scheme (noise factor of 10 dB and 5 dB implementation margins are assumed). The
sensitivity test shall be performed with a single antenna transmitter. The manufacturer of the equipment may use one or
several receiver antennas. The sensitivity tests shall be performed without message retransmissions."
4.2.2 Definitions in ETSI EG 203 336
The following italic text shows the definitions taken from ETSI EG 203 336 [i.5]. These definitions may be more
generic, potentially covering for any channel bandwidth. The receiver selectivity definition is maybe less
straightforward, pointing to single signal & multiple response rejection selectivity components.
"adjacent channels: channel offset from the wanted channel by the channel spacing
alternate channels: channel(s) offset from the wanted channel by twice the channel spacing

Figure 1: Adjacent and alternate channel definitions (picture from ETSI EG 203 336 [i.5])
ETSI
12 ETSI TR 103 688 V1.1.1 (2022-05)
Receiver selectivity is described in Recommendation ITU-R SM.332-4 [19] identifying the capability to receive a
wanted signal, without exceeding a given degradation, due to the presence of an unwanted signal which differs in
frequency from the wanted signal by a specified amount. Recommendation ITU-R SM.332-4 [19] makes a distinction
between single signal selectivity and multiple signal selectivity.
Single signal selectivity refers to effects measured within the linear range of the receiver. For the purposes of the
present document these are:
• attenuation slope; and
• spurious response rejection.
Attenuation slope is a parameter that was mainly applicable to historic systems using analogue modulation; an
acceptable alternative in a Harmonised Standard is to specify adjacent signal (or channel) selectivity.
Spurious response rejection includes all possible spurious responses of the receiver but Recommendation ITU-R
SM.332-4 [19] specifically identifies image-rejection ratio and intermediate-frequency rejection ratio. Receivers with
multiple intermediate-frequencies will have image responses and intermediate-frequency responses for each
intermediate-frequency.
Multiple response rejection selectivity is considered as effective selectivity which includes blocking, adjacent-signal
(adjacent-channel), selectivity and radio-frequency intermodulation."
4.2.3 Definitions in LTE-V2X ETSI TS 136 101
The following italic text shows the definitions used in ETSI TS 136 101 [i.4].
"Adjacent Channel Selectivity (ACS) is a measure of a receiver's ability to receive a E-UTRA signal at its assigned
channel frequency in the presence of an adjacent channel signal at a given frequency offset from the centre frequency of
the assigned channel. ACS is the ratio of the receive filter attenuation on the assigned channel frequency to the receive
filter attenuation on the adjacent channel(s).
(7.3) The reference sensitivity power level REFSENS is the minimum mean power applied to each one of the UE
antenna ports for all UE categories except category 0, category M1, category M2, and category 1bis, or to the single
antenna port for UE category 0, UE category M1, category M2, and UE category 1bis, at which the throughput shall
meet or exceed the requirements for the specified reference measurement channel.
(7.3.1G) Minimum requirements (QPSK) for V2X. When UE is configured for E-UTRA V2X reception non-concurrent
with E-UTRA uplink transmissions for E-UTRA V2X operating bands specified in Table 5.5G-1, the throughput shall be
≥ 95% of the maximum throughput of the reference measurement channels.
In-band blocking is defined for an unwanted interfering signal falling into the UE receive band or into the first 15 MHz
below or above the UE receive band at which the relative throughput shall meet or exceed the minimum requirement for
the specified measurement channels."
NOTE: As further elaborated in clause 6.1.3, in-band blocking with 'case1' offsets corresponds to a similar test as
the IEEE Alternate Adjacent Channel Rejection described in [i.3].
4.2.4 Relationship between ACS and ACR
It should be noted that the ACR definition used in IEEE 802.11 [i.3] or ETSI EN 302 571 [i.1] differs from the
ACS definition from 3GPP. A detailed comparison is provided in clause B.4.
4.2.5 Sensitivity vs required throughput
It is possible to derive an empirical relationship between the receiver sensitivity level and the SNR required for a given
throughput based on the noise figure and implementation margin. Corresponding analysis is provided in Annex F.
ETSI
13 ETSI TR 103 688 V1.1.1 (2022-05)
4.3 Definitions for use in the present document
This clause contains definitions for use in the present document. This clause does not propose any modification of the
ITS band channelization. All the definitions from ETSI EN 302 571 [i.1] do apply, except for the terms which are
defined in the present clause and which overrule the definitions from ETSI EN 302 571 [i.1]. Modifications are
proposed for definitions of adjacent channel rejection and alternate channel rejection in an attempt to make them more
generic, as in ETSI EG 203 336 [i.5], in case of change of channel bandwidth in the future. The receiver sensitivity
definition is updated to match the outcome of the present study (see details in clause 5.3).
The adjacent channel rejection is a measure of the capability of the receiver to operate satisfactorily in the presence of
a signal in the lower or upper adjacent channel, which differs in frequency from the wanted signal by ± the channel
spacing (e.g. ±10 MHz for 10 MHz channel spacing, ±20 MHz for 20 MHz channel spacing, etc.).
The alternate channel rejection is a measure of the capability of the receiver to operate satisfactorily in the presence of
a signal in the lower or upper alternate adjacent channel, which differs in frequency from the wanted signal by ± double
the channel spacing (e.g. ±20 MHz for 10 MHz channel spacing, ±40 MHz for 20 MHz channel spacing, etc.).

Figure 2: Adjacent and alternate channel definitions
Receiver sensitivity is defined as the minimum receive signal level at the antenna connector required for a given packet
error rate and effective data-rate. The sensitivity test should be performed with a single antenna transmitter. The
manufacturer of the equipment may use one or several receiver antennas. The sensitivity test should be performed
without message retransmissions.
5 Study on receiver sensitivity requirements
5.1 Requirements as published in reference documents
5.1.1 Requirements in IEEE 802.11
IEEE Std 802.11-2016 [i.3] clause 17.3.10.2 defines sensitivity requirements based on 10 % PER and packets of
1 000 bytes. The minimum sensitivity levels are defined for each modulation and coding scheme, for 5, 10 and 20 MHz
channel bandwidth (for example -82 dBm for QPSK ½ for 10 MHz channel) as per [i.3] Table 17-18, assuming 10 dB
noise factor and 5 dB implementation margin, as shown in Table 1.
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14 ETSI TR 103 688 V1.1.1 (2022-05)
Table 1: Limits for receiver sensitivity as specified by IEEE 802.11-2016 [i.3] for 10 MHz channel
Minimum
Modulation Coding rate
sensitivity (dBm)
BPSK 1/2 -85
BPSK 3/4 -84
QPSK 1/2 -82
QPSK 3/4 -80
16-QAM 1/2 -77
16-QAM 3/4 -73
64-QAM 2/3 -69
64-QAM 3/4 -68
NOTE: It should be noted that the IEEE 802.11-2016 [i.3] access layer is often referred to as IEEE 802.11p,
which is its older name, and the letter 'p' refers to an amendment in earlier versions of the IEEE 802.11
standard.
5.1.2 Requirements in ETSI EN 302 571
The minimum sensitivity requirements defined in the published ETSI EN 302 571 [i.1] are instructed in clause 4.2.8.2,
as shown in the below italic text:
"The receiver sensitivity shall be less or equal to the values given in Table 9 for a packet error rate (PER) of 10-1 for
1 000 octet frames assuming stationary, non-fading channel conditions.
Table 9: Receiver sensitivity
Minimum sensitivity for 10 MHz
Modulation Coding rate
channel spacing (dBm)
BPSK 1/2 -85
BPSK 3/4 -84
QPSK 1/2 -82
QPSK 3/4 -80
16-QAM 1/2 -77
16-QAM 3/4 -73
64-QAM 2/3 -69
64-QAM 3/4 -68
NOTE: Limits apply only to the applicable modulations to the DUT."
Observations:
• Requirements are expressed in form PER ≤ 10 %.
• Requirements are expressed per ITS-G5 transmit rate (e.g. modulation coding scheme).
• Requirements are thus not expressed in a technology generic way, being only applicable to
IEEE 802.11-2016 [i.3].
• The values specified for sensitivity requirements are identical as the ones indicated in table 17-18 of
IEEE 802.11-2016 [i.3], for 10 MHz channel.
• Test procedure is identical to the one taught by IEEE 802.11-2016 [i.3] in clauses 17.3.10.2 (1 000 octets
frame, etc.).
• The test assumes only cabled environment (non-fading) conditions (sometimes referred to as "clean channel").
ETSI
15 ETSI TR 103 688 V1.1.1 (2022-05)
5.1.3 Requirements in 3GPP LTE Release-14
ETSI TS 136 101 [i.4] defines LTE Release14 User Equipment (UE) radio transmission and reception minimum
performance requirements:
• Clause 14 "Performance requirement (V2X Sidelink Communication)" addresses Sidelink V2X direct
communication (mode 4) demodulation performance requirements. But these are not directly applicable to the
context of an EN (for example PSSCH and PSCCH are tested separately, etc.).
• Clause 7.3.1 "Reference sensitivity power level" addresses Sidelink V2X direct communication (mode 4)
sensitivity requirements, in subclause 7.3.1G "Minimum requirements (QPSK) for V2X", as shown with the
below italic text:
"When UE is configured for E-UTRA V2X reception non-concurrent with E-UTRA uplink transmissions for E-UTRA
V2X operating bands specified in Table 5.5G-1, the throughput shall be ≥ 95% of the maximum throughput of the
reference measurement channels as specified in Annexes A.8.2 with parameters specified in Table 7.3.1G-1.
Table 7.3.1G-1: Reference sensitivity of E-UTRA V2X Bands (PC5)
Channel bandwidth
E-UTRA 1.4 MHz 3 MHz 5 MHz 10 MHz 15 MHz 20 MHz Duplex
V2X Band (dBm) (dBm) (dBm) (dBm) (dBm) (dBm) Mode
-90.4 -87.5
47 HD
NOTE 1: Reference measurement channel is defined in A.8.2.
NOTE 2: The signal power is specified per port.
"
ETSI TS 136 521-1 [i.11], clause 7.3G "Reference sensitivity level for V2X Communication" contains additional
information:
• Clause 7.3G.0 "Minimum conformance requirements" provides identical description with identical
parameterization. The difference between ETSI TS 136 101 [i.4] and ETSI TS 136 521-1 [i.11] is that the
former defines the requirements as "minimum performance requirement" while the latter defines the
requirements as "minimum conformance requirement".
• Clause 7.3G.1 "Reference sensitivity level for V2X Communication/Non-concurrent with E-UTRA uplink
transmissions" provides test procedure details.
An extract of ETSI TS 136 521-1 [i.11] clause 7.3G "Reference sensitivity level for V2X Communication" is provided
in Annex D.
Observations:
• Requirements are expressed in form of throughput to be ≥ 95 % of the maximum throughput of the reference
measurement channel A.8.2 (corresponds to PER ≤ 5 %).
• There is only one requirement per channel bandwidth, for a configuration (A.8.2) that is QPSK with coding
rate of approximately 1/3.
5.1.4 Requi
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