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TECHNICAL SPECIFICATION
5G;
NR;
User Equipment (UE) radio access capabilities
(3GPP TS 38.306 version 15.5.0 Release 15)
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3GPP TS 38.306 version 15.5.0 Release 15 1 ETSI TS 138 306 V15.5.0 (2019-05)
Reference
RTS/TSGR-0238306vf50
Keywords
5G
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3GPP TS 38.306 version 15.5.0 Release 15 2 ETSI TS 138 306 V15.5.0 (2019-05)
Intellectual Property Rights
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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 38.306 version 15.5.0 Release 15 3 ETSI TS 138 306 V15.5.0 (2019-05)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 4
1 Scope . 5
2 References . 5
3 Definitions, symbols and abbreviations . 6
3.1 Definitions . 6
3.2 Symbols . 6
3.3 Abbreviations . 6
4 UE radio access capability parameters . 7
4.1 Supported max data rate . 7
4.1.1 General . 7
4.1.2 Supported max data rate . 7
4.1.3 Void . 8
4.1.4 Total layer 2 buffer size . 8
4.2 UE Capability Parameters . 9
4.2.1 Introduction. 9
4.2.2 General parameters . 10
4.2.3 SDAP Parameters . 10
4.2.4 PDCP Parameters . 11
4.2.5 RLC parameters . 11
4.2.6 MAC parameters . 12
4.2.7 Physical layer parameters . 13
4.2.7.1 BandCombinationList parameters . 13
4.2.7.2 BandNR parameters . 16
4.2.7.3 CA-ParametersEUTRA . 24
4.2.7.4 CA-ParametersNR . 25
4.2.7.5 FeatureSetDownlink parameters . 28
4.2.7.6 FeatureSetDownlinkPerCC parameters . 31
4.2.7.7 FeatureSetUplink parameters . 32
4.2.7.8 FeatureSetUplinkPerCC parameters . 35
4.2.7.9 MRDC-Parameters . 36
4.2.7.10 Phy-Parameters . 36
4.2.7.11 Other PHY parameters . 42
4.2.8 Void . 43
4.2.9 MeasAndMobParameters . 44
4.2.10 Inter-RAT parameters . 47
4.2.10.1 Void. 47
4.2.10.2 Void. 47
4.2.11 Void . 47
4.2.12 Void . 47
4.2.13 IMS Parameters . 47
4.2.14 RRC buffer size . 47
5 Optional features without UE radio access capability parameters . 47
6 Conditionally mandatory features without UE radio access capability parameters . 47
7 Void . 48
8 UE Capability Constraints . 48
Annex A (informative): Change history . 49
History . 50
ETSI
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3GPP TS 38.306 version 15.5.0 Release 15 4 ETSI TS 138 306 V15.5.0 (2019-05)
Foreword
This Technical Specification has been produced by the 3rd 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 38.306 version 15.5.0 Release 15 5 ETSI TS 138 306 V15.5.0 (2019-05)
1 Scope
The present document defines the NR UE Radio Access Capability Parameters.
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 38.101-1: "NR; User Equipment (UE) radio transmission and reception Part 1: Range 1
Standalone".
[3] 3GPP TS 38.101-2: "NR; User Equipment (UE) radio transmission and reception Part 2: Range 2
Standalone".
[4] 3GPP TS 38.101-3: "NR; User Equipment (UE) radio transmission and reception Part 3: Range 1
and Range 2 Interworking operation with other radios".
[5] 3GPP TS 38.133: "NR; Requirements for support of radio resource management".
[6] 3GPP TS 38.211: "NR; Physical channels and modulation".
[7] 3GPP TS 37.340: "Evolved Universal Terrestrial Radio Access (E-UTRA) and NR Multi-
connectivity".
[8] 3GPP TS 38.321: "NR; Medium Access Control (MAC) protocol specification".
[9] 3GPP TS 38.331: "NR; Radio Resource Control (RRC) protocol specification".
[10] 3GPP TS 38.212: "NR; Multiplexing and channel coding".
[11] 3GPP TS 38.213: "NR; Physical layer procedures for control".
[12] 3GPP TS 38.214: "NR; Physical layer procedures for data".
[13] 3GPP TS 38.215: "NR; Physical layer measurements".
[14] 3GPP TS 36.101: "Evolved Universal Terrestrial Radio Access (E-UTRA) radio transmission and
reception".
[15] 3GPP TS 36.306: "Evolved Universal Terrestrial Radio Access (E-UTRA) User Equipment (UE)
radio access capabilities".
[16] 3GPP TS 38.323: "NR; Packet Data Convergence Protocol (PDCP) specification".
[17] 3GPP TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA) Radio Resource
Control (RRC); Protocol Specification".
ETSI
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3GPP TS 38.306 version 15.5.0 Release 15 6 ETSI TS 138 306 V15.5.0 (2019-05)
3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in 3GPP 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 3GPP
TR 21.905 [1].
Fallback band combination: A band combination that would result from another band combination by releasing at
least one SCell or uplink configuration of SCell. An intra-band non-contiguous band combination is not considered to
be a fallback band combination of an intra-band contiguous band combination.
Fallback per band feature set: A feature set per band that has same or lower values than the reported values from the
reported feature set per band for a given band.
Fallback per CC feature set: A feature set per CC that has lower value of UE supported MIMO layers and BW while
keeping the numerology and other parameters the same from the reported feature set per CC for a given carrier per
band.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
MaxDLDataRate: Maximum DL data rate
MaxDLDataRate_MN: Maximum DL data rate in the MN
MaxDLDataRate_SN: Maximum DL data rate in the SN
MaxULDataRate: Maximum UL data rate
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in 3GPP 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
3GPP TR 21.905 [1].
BC Band Combination
DL Downlink
FS Feature Set
FSPC Feature Set Per Component-carrier
MAC Medium Access Control
MCG Master Cell Group
MN Master Node
MR-DC Multi-RAT Dual Connectivity
PDCP Packet Data Convergence Protocol
RLC Radio Link Control
RTT Round Trip Time
SCG Secondary Cell Group
SDAP Service Data Adaptation Protocol
SN Secondary Node
UL Uplink
ETSI
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3GPP TS 38.306 version 15.5.0 Release 15 7 ETSI TS 138 306 V15.5.0 (2019-05)
4 UE radio access capability parameters
4.1 Supported max data rate
4.1.1 General
The DL and UL max data rate supported by the UE is calculated by band or band combinations supported by the UE. A
UE supporting MR-DC shall support the calculated DL and UL max data rate defined in 4.1.2.
4.1.2 Supported max data rate
For NR, the approximate data rate for a given number of aggregated carriers in a band or band combination is computed
as follows.
J BW ( j),μ
N ⋅12
−6 ( j) ( j) ( j) ( j)
PRB
data rate (in Mbps) = 10 ⋅ v ⋅Q ⋅ f ⋅ R ⋅ ⋅()1− OH
m max
Layers μ
T
j=1 s
wherein
J is the number of aggregated component carriers in a band or band combination
R = 948/1024
max
For the j-th CC,
( j)
v is the maximum number of supported layers given by higher layer parameter maxNumberMIMO-
Layers
LayersPDSCH for downlink and maximum of higher layer parameters maxNumberMIMO-LayersCB-PUSCH
and maxNumberMIMO-LayersNonCB-PUSCH for uplink.
( j)
Q is the maximum supported modulation order given by higher layer parameter
m
supportedModulationOrderDL for downlink and higher layer parameter supportedModulationOrderUL for
uplink.
( j)
f is the scaling factor given by higher layer parameter scalingFactor and can take the values 1, 0.8, 0.75,
and 0.4.
μ
is the numerology (as defined in TS 38.211 [6])
−3
10
μ
μ
T =
s
μ
T
μ
s 14 ⋅ 2
is the average OFDM symbol duration in a subframe for numerology , i.e. . Note that
normal cyclic prefix is assumed.
BW()j ,μ
()j
N μ
PRB BW
is the maximum RB allocation in bandwidth with numerology , as defined in 5.3 TS
()
j
BW
38.101-1 [2] and 5.3 TS 38.101-2 [3], where is the UE supported maximum bandwidth in the given
band or band combination.
( j)
OH is the overhead and takes the following values
0.14, for frequency range FR1 for DL
0.18, for frequency range FR2 for DL
0.08, for frequency range FR1 for UL
0.10, for frequency range FR2 for UL
NOTE: Only one of the UL or SUL carriers (the one with the higher data rate) is counted for a cell operating
SUL.
The approximate maximum data rate can be computed as the maximum of the approximate data rates computed using
the above formula for each of the supported band or band combinations.
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3GPP TS 38.306 version 15.5.0 Release 15 8 ETSI TS 138 306 V15.5.0 (2019-05)
For EUTRA in case of MR-DC, the approximate data rate for a given number of aggregated carriers in a band or band
combination is computed as follows.
J
−3
Data rate (in Mbps) = 10 ⋅ TBS
j
j=1
wherein
J is the number of aggregated EUTRA component carriers in MR-DC band combination
is the total maximum number of DL-SCH transport block bits received within a 1ms TTI for j-th CC, as
derived from TS36.213 [22] based on the UE supported maximum MIMO layers for the j-th carrier, and based
on the modulation order and number of PRBs based on the bandwidth of the j-th carrier.
The approximate maximum data rate can be computed as the maximum of the approximate data rates computed using
the above formula for each of the supported band or band combinations.
For MR-DC, the approximate maximum data rate is computed as the sum of the approximate maximum data rates from
NR and EUTRA.
4.1.3 Void
4.1.4 Total layer 2 buffer size
The total layer 2 buffer size is defined as the sum of the number of bytes that the UE is capable of storing in the RLC
transmission windows and RLC reception and reordering windows and also in PDCP reordering windows for all radio
bearers.
The required total layer 2 buffer size in MR-DC and NR-DC is the maximum value of the calculated values based on
the following equations:
- MaxULDataRate_MN * RLCRTT_MN + MaxULDataRate_SN * RLCRTT_SN + MaxDLDataRate_SN *
RLCRTT_SN + MaxDLDataRate_MN * (RLCRTT_SN + X2/Xn delay + Queuing in SN)
- MaxULDataRate_MN * RLCRTT_MN + MaxULDataRate_SN * RLCRTT_SN + MaxDLDataRate_MN *
RLCRTT_MN + MaxDLDataRate_SN * (RLCRTT_MN + X2/Xn delay + Queuing in MN)
Otherwise it is calculated by MaxDLDataRate * RLC RTT + MaxULDataRate * RLC RTT.
NOTE: Additional L2 buffer required for preprocessing of data is not taken into account in above formula.
The required total layer 2 buffer size is determined as the maximum total layer 2 buffer size of all the calculated ones
for each band combination and the applicable Feature Set combination in the supported MR-DC or NR band
combinations. The RLC RTT for NR cell group corresponds to the smallest SCS numerology supported in the band
combination and the applicable Feature Set combination.
wherein
X2/Xn delay + Queuing in SN = 25ms if SCG is NR, and 55ms if SCG is EUTRA
X2/Xn delay + Queuing in MN = 25ms if MCG is NR, and 55ms if MCG is EUTRA
RLC RTT for EUTRA cell group = 75ms
RLC RTT for NR cell group is defined in Table 4.1.4-1
Table 4.1.4-1: RLC RTT for NR cell group per SCS
SCS (KHz) RLC RTT (ms)
15KHz 50
30KHz 40
60KHz 30
120KHz 20
ETSI
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3GPP TS 38.306 version 15.5.0 Release 15 9 ETSI TS 138 306 V15.5.0 (2019-05)
4.2 UE Capability Parameters
4.2.1 Introduction
The following subclauses define the UE radio access capability parameters. Only parameters for which there is the
possibility for UEs to signal different values are considered as UE radio access capability parameters. Therefore,
mandatory features without capability parameters that are the same for all UEs are not listed here.
The UE may support different functionalities between FDD and TDD, and/or between FR1 and FR2. The UE shall
indicate the UE capabilities as follows. In the table of UE capability parameter in subsequent sub-clauses, "Yes" in the
column by "FDD-TDD DIFF" and "FR1-FR2 DIFF" indicates the UE capability field can have a different value for
between FDD and TDD or between FR1 and FR2 and "No" indicates if it cannot. "FD" in the column indicates to refer
the associated field description. "FR1 only" or "FR2 only" in the column indicates the associated feature is only
supported in FR1 or FR2 and "TDD only" indicates the associated feature is only supported in TDD.
1> set all fields of UE-NR/MRDC-Capability except fdd-Add-UE-NR/MRDC-Capabilities, tdd-Add-UE-
NR/MRDC-Capabilities, fr1-Add-UE-NR/MRDC-Capabilities and fr2-Add-UE-NR/MRDC-Capabilities, to
include the values applicable for all duplex mode(s) and frequency range(s) that the UE supports;
1> if UE supports both FDD and TDD and if (some of) the UE capability fields have a different value for FDD and
TDD
2> if for FDD, the UE supports additional functionality compared to what is indicated by the previous fields of
UE-NR/MRDC-Capability:
3> include field fdd-Add-UE-NR/MRDC-Capabilities and set it to include fields reflecting the additional
functionality applicable for FDD;
2> if for TDD, the UE supports additional functionality compared to what is indicated by the previous fields of
UE-NR/MRDC-Capability:
3> include field tdd-Add-UE-NR/MRDC-Capabilities and set it to include fields reflecting the additional
functionality applicable for TDD;
1> if UE supports both FR1 and FR2 and if (some of) the UE capability fields have a different value for FR1 and
FR2:
2> if for FR1, the UE supports additional functionality compared to what is indicated by the previous fields of
UE-NR/MRDC-Capability:
3> include field fr1-Add-UE-NR/MRDC-Capabilities and set it to include fields reflecting the additional
functionality applicable for FR1;
2> if for FR2, the UE supports additional functionality compared to what is indicated by the previous fields of
UE-NR/MRDC-Capability:
3> include field fr2-Add-UE-NR/MRDC-Capabilities and set it to include fields reflecting the additional
functionality applicable for FR2;
NOTE: The fields which indicate "shall be set to 1" in the following tables means these features are purely
mandatory and are assumed they are the same as mandatory without capability signaling.
For optional features, the UE radio access capability parameter indicates whether the feature has been implemented and
successfully tested. For mandatory features with the UE radio access capability parameter, the parameter indicates
whether the feature has been successfully tested. In the table of UE capability parameter in subsequent sub-clauses,
"Yes" in the column by "M" indicates the associated feature is mandatory and "No" indicates the associated feature is
optional. "CY" in the column indicates the associated feature is conditional mandatory and the condition is described in
the field description. "FD" in the column indicates to refer the associated field description.
UE capability parameters have hierarchical structure. In the table of UE capability parameter in subsequent sub-clauses,
"Per" indicates the level the associated parameter is included. "UE" in the column indicates the associated parameter is
signalled per UE, "Band" indicates it is signalled per band, "BC" indicates it is signalled per band combination, "FS"
indicates it is signalled per feature set (per band per band combination), "FSPC" indicates it is signalled per feature set
ETSI
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3GPP TS 38.306 version 15.5.0 Release 15 10 ETSI TS 138 306 V15.5.0 (2019-05)
per component carrier (per CC per band per band combination), and "FD" in the column indicates to refer the associated
field description.
4.2.2 General parameters
Definitions for parameters Per M FDD- FR1-
TDD FR2
DIFF DIFF
delayBudgetReporting UE No No No
Indicates whether the UE supports delay budget reporting as specified in TS 38.331
[9].
inactiveState UE Yes No No
Indicates whether the UE supports RRC_inactive as specified in TS 38.331 [9].
overheatingInd UE No No No
Indicates whether the UE supports overheating assistance information.
reducedCP-Latency UE No No No
Indicates whether the UE supports reduced control plane latency as defined in TS
38.331 [9]
splitSRB-WithOneUL-Path UE No Yes No
Indicates whether the UE supports UL transmission via either MCG path or SCG
path for the split SRB as specified in TS 37.340 [7].
splitDRB-withUL-Both-MCG-SCG UE Yes Yes No
Indicates whether the UE supports UL transmission via both MCG path and SCG
path for the split DRB as specified in TS 37.340 [7].
srb3 UE Yes Yes No
Indicates whether the UE supports direct SRB between the SN and the UE as
specified in TS 37.340 [7].
v2x-EUTRA UE No No No
Indicates whether the UE supports EUTRA V2X according to UE-EUTRA-Capability
as defined in [x], independent of the configured EN-DC band combination.
4.2.3 SDAP Parameters
Definitions for parameters Per M FDD-
TDD
DIFF
as-ReflectiveQoS UE No No
Indicates whether the UE supports AS reflective QoS.
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3GPP TS 38.306 version 15.5.0 Release 15 11 ETSI TS 138 306 V15.5.0 (2019-05)
4.2.4 PDCP Parameters
Definitions for parameters Per M FDD-
TDD
DIFF
continueROHC-Context UE No No
Defines whether the UE supports ROHC context continuation operation where the UE
does not reset the current ROHC context upon handover.
maxNumberROHC-ContextSessions
UE No No
Defines the maximum number of header compression context sessions supported by the
UE, excluding context sessions that leave all headers uncompressed.
outOfOrderDelivery UE No No
Indicates whether UE supports Out of order delivery of data to upper layers by PDCP.
pdcp-DuplicationMCG-OrSCG-DRB UE No No
Indi
...