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TECHNICAL SPECIFICATION
LTE;
Evolved Universal Terrestrial Radio Access (E-UTRA);
Layer 2 - Measurements
(3GPP TS 36.314 version 15.1.0 Release 15)
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3GPP TS 36.314 version 15.1.0 Release 15 1 ETSI TS 136 314 V15.1.0 (2018-07)
Reference
RTS/TSGR-0236314vF10
Keywords
LTE
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3GPP TS 36.314 version 15.1.0 Release 15 2 ETSI TS 136 314 V15.1.0 (2018-07)
Intellectual Property Rights
Essential patents
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Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
Modal verbs terminology
In the present document "shall", "shall not", "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
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3GPP TS 36.314 version 15.1.0 Release 15 3 ETSI TS 136 314 V15.1.0 (2018-07)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 4
1 Scope . 5
2 References . 5
3 Definitions, symbols and abbreviations . 5
3.1 Definitions . 5
3.2 Symbols . 5
3.3 Abbreviations . 5
4 Layer 2 measurements . 6
4.1 E-UTRAN measurements performed by the eNB . 6
4.1.1 PRB usage . 6
4.1.1.1 Total PRB usage . 6
4.1.1.2 PRB usage per traffic class . 7
4.1.1.3 Void. 8
4.1.1.4 Void. 8
4.1.1.5 Void. 8
4.1.2 Received Random Access Preambles . 8
4.1.3 Number of active UEs . 9
4.1.3.1 Number of Active UEs in the DL per QCI . 9
4.1.3.2 Number of Active UEs in the UL per QCI . 10
4.1.3.3 Number of Active UEs . 10
4.1.3.4 Number of Active UEs per QCI . 11
4.1.4 Packet Delay . 13
4.1.4.1 Packet Delay in the DL per QCI. 13
4.1.5 Data Loss . 14
4.1.5.1 Packet Discard Rate in the DL per QCI . 14
4.1.5.2 Packet Uu Loss Rate in the DL per QCI . 15
4.1.5.3 Packet Loss Rate in the UL per QCI . 16
4.1.6 Scheduled IP Throughput . 17
4.1.6.1 Scheduled IP Throughput in DL . 17
4.1.6.2 Scheduled IP Throughput in UL . 18
4.1.7 Scheduled IP Throughput for MDT . 18
4.1.7.1 Scheduled IP Throughput for MDT in DL . 18
4.1.7.2 Scheduled IP Throughput for MDT in UL . 19
4.1.8 Data Volume . 20
4.1.8.1 Data volume in DL . 20
4.1.8.2 Data Volume in UL . 20
4.1.9 Data Volume for Shared Networks . 21
4.1.9.1 Data volume for shared networks in DL . 21
4.1.9.2 Data Volume for shared networks in UL . 21
4.1.10 Distribution of PRB usage . 21
4.1.10.1 Distribution of total PRB usage . 21
4.1.11 Distribution of scheduled IP throughput . 22
4.1.11.1 Distribution of scheduled IP throughput in DL . 22
4.1.11.2 Distribution of scheduled IP throughput in UL . 23
4.2 E-UTRAN measurements performed by the UE . 24
4.2.1 Packet Delay . 24
4.2.1.1 UL PDCP Packet Delay per QCI . 24
4.2.1.1.1 Measurement report mapping for PDCP SDU queuing delay . 25
Annex A (informative): Change history . 29
History . 30
ETSI
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3GPP TS 36.314 version 15.1.0 Release 15 4 ETSI TS 136 314 V15.1.0 (2018-07)
Foreword
rd
This Technical Specification has been produced by the 3 Generation Partnership Project (3GPP).
The contents of the present document are subject to continuing work within the TSG and may change following formal
TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an
identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change control.
y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections,
updates, etc.
z the third digit is incremented when editorial only changes have been incorporated in the document.
ETSI
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3GPP TS 36.314 version 15.1.0 Release 15 5 ETSI TS 136 314 V15.1.0 (2018-07)
1 Scope
The present document contains the description and definition of the measurements performed by E-UTRAN or the UE
that are transferred over the standardised interfaces in order to support E-UTRA radio link operations, radio resource
management (RRM), network operations and maintenance (OAM), minimization of drive tests (MDT) and self-
organising networks (SON).
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or
non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including
a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same
Release as the present document.
[1] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications".
[2] 3GPP TS 36.321: "Evolved Universal Terrestrial Radio Access (E-UTRA) Medium Access
Control (MAC) protocol specification ".
[3] 3GPP TS 36.322: "Evolved Universal Terrestrial Radio Access (E-UTRA) Radio Link Control
(RLC) protocol specification".
[4] 3GPP TS 36.323: "Evolved Universal Terrestrial Radio Access (E-UTRA); Packet Data
Convergence Protocol (PDCP) specification".
[5] 3GPP TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource
Control (RRC) Protocol specification".
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in TR 21.905 [1] and the following apply. A
term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905 [1].
3.2 Symbols
For the purposes of the present document, symbols apply locally in the subclause where they are defined.
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in TR 21.905 [1] and the following apply. An
abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in
TR 21.905 [1].
DRB Data Radio bearer
DCCH Dedicated Control Channel
DTCH Dedicated Traffic Channel
HARQ Hybrid Automatic Repeat Request
PRB Physical Resource Block
QCI Quality of service Class Identifier
RN Relay Node
SRB Signalling Radio Bearer
ETSI
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3GPP TS 36.314 version 15.1.0 Release 15 6 ETSI TS 136 314 V15.1.0 (2018-07)
TTI Transmission Time Interval
4 Layer 2 measurements
4.1 E-UTRAN measurements performed by the eNB
4.1.1 PRB usage
The objective of the PRB usage measurements is to measure usage of time and frequency resources. A use case is cell
load balancing, where PRB usage is used for information signalled across the X2 interface. Another use-case is OAM
performance observability.
If there is one or more RNs served in a cell, for that cell the eNB performs PRB usage measurements separately for all
traffic (including transmissions to/from RNs and UEs directly connected to the eNB) and for RN traffic.
4.1.1.1 Total PRB usage
Protocol Layer: MAC
Definition Total PRB usage is calculated in the time-frequency domain only. The reference point is the
Service Access Point between MAC and L1. The measurement is done separately for:
- DL
- UL
Detailed Definitions:
M1(T )
M (T ) = ∗100 , where explanations can be found in the table 4.1.1.1-1 below.
P(T)
Table 4.1.1.1-1
Total PRB usage. Percentage of PRBs used, averaged
M (T)
during time period . Value range: 0-100%
T
A count of full physical resource blocks.
For the DL, all PRBs used for transmission shall be included.
M1(T )
For the UL, all PRBs allocated for transmission shall be
included.
Total number of PRBs available during time period T .
For an eNB serving one or more RNs, all PRBs regardless of
P(T)
RN subframe configurations shall be counted.
(NOTE)
The time period during which the measurement is performed.
T
NOTE: It is up to the eNB implementation how to calculate P(T) with respect to PRBs that may be considered not
available, e.g. MBSFN subframes and subframes subject to restrictions due to TDM ICIC.
ETSI
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3GPP TS 36.314 version 15.1.0 Release 15 7 ETSI TS 136 314 V15.1.0 (2018-07)
4.1.1.2 PRB usage per traffic class
Protocol Layer: MAC
Definition PRB usage per traffic class. This measurement is an aggregate for all UEs in a cell, and is
applicable to Dedicated Traffic Channels (DTCH). The reference point is the Service Access
Point between MAC and L1. The measurement is done separately for:
- DL DTCH, for each QCI.
- UL DTCH, for each QCI
Detailed Definitions:
1 B(t,qci)
M1(qci,T ) = ∗ X (t) ∗ , where
W ( p) B(t)
∀∈tt∀p S ( )
explanations can be found in the table 4.1.1.2-1 below.
M1(qci,T )
M (qci) = ∗100 , where
P(T )
explanations can be found in the table 4.1.1.2-2 below.
Table 4.1.1.2-1
Absolute PRB usage per traffic class. A count of full or partial
M1(qci,T)
physical resource blocks.
The time period during which the measurement is performed
T
(in TTIs)
A transport block in time period T that contain DTCH data.
t
Initial transmissions and HARQ retransmissions shall be
counted.
The set of physical resource blocks used for transmission of
S(t)
transport block t .
The number of transport blocks that are currently sharing
W ( p)
PRB p .
The total number of DTCH bits for DTCHs with QCI = qci ,
B(t, qci )
carried in transport block t
The total number of DTCH and DCCH bits carried in transport
B(t)
block t .
If multiplexing is taken into account: X (t) = 1 always. If
multiplexing is not taken into account: X (t) = 1 if transport
X (t)
block t carries data corresponding to only one QCI and:
X (t) = 0 otherwise. It is up to implementation if to take
multiplexing into account or not.
Table 4.1.1.2-2
PRB usage per traffic class. Percentage of PRBs used for a
M (qci)
certain qci, averaged during time period T . Value range: 0-
100%
Total number of PRBs available during time period T .
In an eNB serving one or more RNs, all PRBs regardless of
P(T)
RN subframe configurations shall be counted.
(NOTE)
NOTE: It is up to the eNB implementation how to calculate P(T) with respect to PRBs that may be considered not
available, e.g. MBSFN subframes and subframes subject to restrictions due to TDM ICIC.
ETSI
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3GPP TS 36.314 version 15.1.0 Release 15 8 ETSI TS 136 314 V15.1.0 (2018-07)
4.1.1.3 Void
4.1.1.4 Void
4.1.1.5 Void
4.1.2 Received Random Access Preambles
A use case for this measurement is RACH configuration optimization, where Received Random Access Preambles is
signaled across an OAM interface.
Protocol Layer: MAC
Definition Received Random Access Preambles. This measurement is applicable to PRACH. The
reference point is the Service Access Point between MAC and L1. The measured quantity is the
number of received Random Access preambles during a time period over all PRACHs configured
in a cell. The measurement is done separately for:
- Dedicated preambles
- Randomly selected preambles in the low rangeRandomly selected preambles in the low
range
- Randomly selected preambles in the high range.
The unit of the measured value is [/s].
ETSI
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3GPP TS 36.314 version 15.1.0 Release 15 9 ETSI TS 136 314 V15.1.0 (2018-07)
4.1.3 Number of active UEs
The objective of the measurement is to measure number of active UEs per QCI for OAM performance observability. It
is intended to be part of a calculation to determine the bitrate UEs achieve when they are active, i.e. when applications
are transmitting and receiving data.
For an eNB serving one or more RNs, the measurement refers to the number of active UEs connected directly to the
eNB, excluding RNs.
4.1.3.1 Number of Active UEs in the DL per QCI
Protocol Layer: MAC, RLC, PDCP
Definition Number of Active UEs in the DL per QCI. This measurement refers to UEs for which there is
buffered data for the DL for DRBs. The measurement is done separately per QCI.
Detailed Definition:
N(i, qci)
∀i
M (T,qci, p) = ,where
I(T, p)
explanations can be found in the table 4.1.3.1-1 below.
Table 4.1.3.1-1
Number of Active UEs in the DL per QCI, averaged during
M (T, qci, p)
time period T . Unit: Integer.
Number of UEs for which there is buffered data for the DL in
MAC, RLC or PDCP protocol layers for a Data Radio Bearer
of traffic class with QCI = qci at sampling occasion i .
In RLC and PDCP layers, buffered data corresponds to data
N(i,qci)
available for transmission according to the definitions in TS
36.322 and TS 36.323.
Buffered data includes data for which HARQ transmission
has not yet terminated.
Sampling occasion during time periodT. A sampling
i
occasion shall occur once every seconds.
p
Sampling period length. Unit: second. The sampling period
p
shall be at most 0.1 s.
I(T, p)
Total number of sampling occasions during time period T .
Time Period during which the measurement is performed,
T
Unit: second.
ETSI
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3GPP TS 36.314 version 15.1.0 Release 15 10 ETSI TS 136 314 V15.1.0 (2018-07)
4.1.3.2 Number of Active UEs in the UL per QCI
Protocol Layer: MAC
Definition
Number of Active UEs in the UL per QCI. This measurement refers to UEs for which there is
buffered data for the UL for DRBs. The measurement is done separately per QCI.
Detailed Definition:
N(i, qci)
∀i
M (T,qci, p) = where
I(T, p)
explanations can be found in the table 4.1.3.2-1 below.
NOTE: For this measurement, the expected accuracy is dependent on application scenario, cell load UE
configuration and how DRBs are distributed over logical channel groups.
Table 4.1.3.2-1
Number of Active UEs in the UL per QCI, averaged during
M (T, qci, p)
time period T . Unit: Integer.
Number of UEs for which there is buffered data for the UL in
MAC, RLC or PDCP protocol layers for a Data Radio Bearer
of traffic class with QCI = qci at sampling occasion.i
This is a eNB estimation that is expected to be based on
Buffer Status Reporting, provided semi-persistent grants and
progress of ongoing HARQ transmissions (by including
N(i,qci)
buffered data for which HARQ transmission has not yet
terminated in buffered data).
In addition, the eNB can use the analysis of received data in
the estimation. In such case, when QCI cannot be determined
at the time of the sampling occasion, eNB can determine QCI
after successful reception of data.
Sampling occasion during time periodT. A sampling
i
occasion shall occur once every p seconds.
Sampling period length. Unit: second. The sampling period
p
shall be at most 0.1 s.
I(T, p)
Total number of sampling occasions during time period .
T
Time Period during which the measurement is performed,
T
Unit: second.
4.1.3.3 Number of Active UEs
Protocol Layer: MAC
Definition Number of Active UEs. This measurement refers to UEs for which there is buffered data for the
UL for DRBs, or there is buffered data for the DL for DRBs, or both.
Detailed Definition:
N(i)
∀i
M(T,p) = where
I(T,p)
explanations can be found in the table 4.1.3.3-1 below.
NOTE: For this measurement, the expected accuracy is dependent on application scenario, cell load UE
configuration and how DRBs are distributed over logical channel groups.
ETSI
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3GPP TS 36.314 version 15.1.0 Release 15 11 ETSI TS 136 314 V15.1.0 (2018-07)
Table 4.1.3.3-1
Number of Active UEs, averaged during time period T . Unit:
M(T,p)
Integer.
Number of UEs for which there is buffered data for the UL or
for the DL or for both in MAC, RLC or PDCP protocol layers
at sampling occasion.i
For UL, This is a eNB estimation that is expected to be based
on Buffer Status Reporting, provided semi-persistent grants
and progress of ongoing HARQ transmissions (by including
N(i) buffered data for which HARQ transmission has not yet
terminated in buffered data). In addition, the eNB can use the
analysis of received data in the estimation.
For DL, in RLC and PDCP layers, buffered data corresponds
to data available for transmission according to the definitions
in TS 36.322 and TS 36.323. Buffered data includes data for
which HARQ transmission has not yet terminated.
Sampling occasion during time periodT. A sampling
i
occasion shall occur once every p seconds.
Sampling period length. Unit: second. The sampling period
p
shall be at most 0.1 s.
I(T, p)
Total number of sampling occasions during time period T .
Time Period during which the measurement is performed,
T
Unit: second.
4.1.3.4 Number of Active UEs per QCI
Protocol Layer: MAC
Definition Number of Active UEs per QCI. This measurement refers to UEs for which there is buffered data
for the UL for DRBs, or there is buffered data for the DL for DRBs, or both. The measurement is
done separately per QCI.
Detailed Definition:
N(i, qci)
∀i
M (T,qci, p) = where
I(T, p)
explanations can be found in the table 4.1.3.4-1 below.
NOTE: For this measurement, the expected accuracy is dependent on application scenario, cell load UE
configuration and how DRBs are distributed over logical channel groups.
ETSI
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3GPP TS 36.314 version 15.1.0 Release 15 12 ETSI TS 136 314 V15.1.0 (2018-07)
Table 4.1.3.4-1
Number of Active UEs per QCI, averaged during time period
M (T, qci, p)
T . Unit: Integer.
Number of UEs for which there is buffered data for the UL or
for the DL or for both in MAC, RLC or PDCP protocol layers
for a Data Radio Bearer of traffic class with QCI = qci at
sampling occasion.i
For UL, This is a eNB estimation that is expected to be based
on Buffer Status Reporting, provided semi-persistent grants
and progress of ongoing HARQ transmissions (by including
buffered data for which HARQ transmission has not yet
N(i,qci)
terminated in buffered data). In addition, the eNB can use the
analysis of received data in the estimation. In such case,
when QCI cannot be determined at the time of the sampling
occasion, eNB can determine QCI after successful reception
of data.
For DL, in RLC and PDCP layers, buffered data corresponds
to data available for transmission according to the definitions
in TS 36.322 and TS 36.323. Buffered data includes data for
which HARQ transmission has not yet terminated.
Sampling occasion during time periodT. A sampling
i
occasion shall occur once every p seconds.
Sampling period length. Unit: second. The sampling period
p
shall be at most 0.1 s.
I(T, p)
Total number of sampling occasions during time period T .
Time Period during which the measurement is performed,
T
Unit: second.
ETSI
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3GPP TS 36.314 version 15.1.0 Release 15 13 ETSI TS 136 314 V15.1.0 (2018-07)
4.1.4 Packet Delay
4.1.4.1 Packet Delay in the DL per QCI
The objective of this measurement is to measure L2 Packet Delay for OAM performance observability or for QoS
verification of MDT.
If there is one or more RNs served in a cell, for that cell the eNB performs each measurement separately for packets
transmitted between the eNB and
...