Content for TS 38.331 Word version: 18.0.0

1… 4… 5… 5.2.2.4… 5.3… 5.3.3… 5.3.5… 5.3.5.5… 5.3.5.6… 5.3.5.7… 5.3.5.13… 5.3.5.17… 5.3.6… 5.3.8… 5.3.13… 5.3.14… 5.4… 5.5… 5.5.3… 5.5.4… 5.5.4.15… 5.5.4.23… 5.5.5… 5.5a… 5.7… 5.7.4… 5.7.8… 5.7.12… 5.8… 5.8.9… 5.8.9.2… 5.8.9.8… 5.8.10… 5.8.11… 5.9… 5.10… 6… 6.2.2… 6-2-2-23… 6-2-2-27… 6-2-2-43… 6-2-2-47… 6.3… 6.3.2… 6-3-2-27… 6-3-2-49… 6-3-2-73… 6-3-2-95… 6-3-2-108… 6-3-2-134… 6-3-2-162… 6-3-2-188… 6-3-2-213… 6-3-2-243… 6-3-2-271… 6-3-2-297… 6-3-2-341… 6.3.3… 6-3-3-25… 6-3-3-51… 6.3.4… 6.3.5… 6-3-5-25… 6.3.6… 6.4… 7… 9… 11… A… A.4… B…

9.1 Specified configurations 9.1.1 Logical channel configurations 9.1.1.1 BCCH configuration 9.1.1.2 CCCH configuration 9.1.1.3 PCCH configuration 9.1.1.4 SCCH configuration 9.1.1.5 STCH configuration 9.1.1.6 MCCH configuration 9.1.1.7 MTCH configuration for MBS broadcast 9.2 Default radio configurations 9.2.1 Default SRB configurations 9.2.2 Default MAC Cell Group configuration 9.2.3 Default values timers and constants 9.2.4 Default PC5 Relay RLC Channel 9.2.5 Default SRAP configurations 9.3 Sidelink pre-configured parameters — NR-Sidelink-Preconf — SL-PosPreconfigurationNR — SL-PreconfigurationNR — End of NR-Sidelink-Preconf 9.4 Radio Information Related to Discovery Message — SL-AccessInfo-L2U2N 9.5 Radio Information Related to TX Profile 10.1 General 10.2 ASN.1 violation or encoding error 10.3 Field set to a not comprehended value 10.4 Mandatory field missing 10.5 Not comprehended field
...

9 Specified and default radio configurations p. 1474

Specified and default configurations are configurations of which the details are specified in the standard. Specified configurations are fixed while default configurations can be modified using dedicated signalling. The default value for the parameters not listed in following clauses shall be set such as the corresponding features are not configured, i.e. release or false unless explicitly stated otherwise.

9.1 Specified configurations p. 1474

9.1.1 Logical channel configurations p. 1474

9.1.1.1 BCCH configuration p. 1474

Parameters

Name	Value	Semantics description	Ver
SDAP configuration	Not used
PDCP configuration	Not used
RLC configuration	TM
Logical channel configuration	Not used

9.1.1.2 CCCH configuration p. 1475

Parameters

Name	Value	Semantics description
SDAP configuration	Not used
PDCP configuration	Not used
RLC configuration	TM
Logical channel configuration
>priority	1	Highest priority
>prioritisedBitRate	infinity
>bucketSizeDuration	ms1000
>logicalChannelGroup	0

9.1.1.3 PCCH configuration p. 1475

Parameters

Name	Value	Semantics description	Ver
SDAP configuration	Not used
PDCP configuration	Not used
RLC configuration	TM
Logical channel configuration	Not used

9.1.1.4 SCCH configuration p. 1475

Parameters that are specified for unicast of NR sidelink communication, which is used for the sidelink signalling radio bearer of PC5-RRC message. The SL-SRB using this SCCH configuration is named as SL-SRB3.

Name	Value	Semantics description	Ver
PDCP configuration
>t-Reordering	Undefined	Selected by the receiving UE, up to UE implementation
>pdcp-SN-Size	12
SRAP configuration		Specified for L2 U2U relay operation, which is used for U2U Remote UE's SL-SRB3 with the peer U2U Remote UE.
>sl-RemoteUE-SLRB-Identity	3	This parameter is only applicable to L2 U2U relay operation.
RLC configuration		AM RLC
>sn-FieldLength	12
>t-Reassembly	Undefined	Selected by the receiving UE, up to UE implementation
>t-PollRetransmit	Undefined	Selected by the transmitting UE, up to UE implementation
>pollPDU	Undefined	Selected by the transmitting UE, up to UE implementation
>pollByte	Undefined	Selected by the transmitting UE, up to UE implementation
>maxRetxThreshold	Undefined	Selected by the transmitting UE, up to UE implementation
>t-StatusProhibit	Undefined	Selected by the receiving UE, up to UE implementation
>logicalChannelIdentity	3
MAC configuration
>priority	1
>prioritisedBitRate	infinity
>logicalChannelGroup	0
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network.
>sl-HARQ-FeedbackEnabled	Undefined	Selected by the transmitting UE, up to UE implementation
Additional RLC configuration		AM RLC This RLC is used for PDCP duplication	v1800
>sn-FieldLength	12		v1800
>t-Reassembly	Undefined	Selected by the receiving UE, up to UE implementation	v1800
>t-PollRetransmit	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>pollPDU	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>pollByte	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>maxRetxThreshold	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>t-StatusProhibit	Undefined	Selected by the receiving UE, up to UE implementation	v1800
>logicalChannelIdentity	FFS		v1800
MAC configuration associated to additional RLC configuration		This logical channel is used for PDCP duplication	v1800
>priority	1		v1800
>prioritisedBitRate	infinity		v1800
>logicalChannelGroup	0		v1800
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network.	v1800
>sl-HARQ-FeedbackEnabled	Undefined	Selected by the transmitting UE, up to UE implementation	v1800

Parameters that are specified of NR sidelink communication, which is used for the sidelink signalling radio bearer of unprotected PC5-S message (e.g. Direct Link Establishment Request, TS 24.587 or Prose Direct Link Establishment Request, TS 24.554). The SL-SRB using this SCCH configuration is named as SL-SRB0.

Name	Value	Semantics description
PDCP configuration
>t-Reordering	Undefined	Selected by the receiving UE, up to UE implementation
>pdcp-SN-Size	12
SRAP configuration		Specified for L2 U2U relay operation, which is used for U2U Remote UE's SL-SRB0 with the peer U2U Remote UE.
>sl-RemoteUE-SLRB-Identity	0	This parameter is only applicable to L2 U2U relay operation.
RLC configuration		UM RLC
>sn-FieldLength	6
>t-Reassembly	Undefined	Selected by the receiving UE, up to UE implementation
>logicalChannelIdentity	0
MAC configuration
>priority	1
>prioritisedBitRate	infinity
>logicalChannelGroup	0
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network.
>sl-HARQ-FeedbackEnabled	Undefined	Selected by the transmitting UE, up to UE implementation

Parameters that are specified for unicast of NR sidelink communication, which is used for the sidelink signalling radio bearer of PC5-S message establishing PC5-S security (e.g. Direct Link Security Mode Command and Direct Link Security Mode Complete, TS 24.587 or ProSe Direct Link Security Mode Command and ProSe Direct Link Security Mode Complete, TS 24.554). The SL-SRB using this SCCH configuration is named as SL-SRB1.

Name	Value	Semantics description	Ver
PDCP configuration
>t-Reordering	Undefined	Selected by the receiving UE, up to UE implementation
>pdcp-SN-Size	12
SRAP configuration		Specified for L2 U2U relay operation, which is used for U2U Remote UE's SL-SRB1 with the peer U2U Remote UE.
>sl-RemoteUE-SLRB-Identity	1	This parameter is only applicable to L2 U2U relay operation.
RLC configuration		AM RLC
>sn-FieldLength	12
>t-Reassembly	Undefined	Selected by the receiving UE, up to UE implementation
>t-PollRetransmit	Undefined	Selected by the transmitting UE, up to UE implementation
>pollPDU	Undefined	Selected by the transmitting UE, up to UE implementation
>pollByte	Undefined	Selected by the transmitting UE, up to UE implementation
>maxRetxThreshold	Undefined	Selected by the transmitting UE, up to UE implementation
>t-StatusProhibit	Undefined	Selected by the receiving UE, up to UE implementation
>logicalChannelIdentity	1
MAC configuration
>priority	1
>prioritisedBitRate	infinity
>logicalChannelGroup	0
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network.
>sl-HARQ-FeedbackEnabled	Undefined	Selected by the transmitting UE, up to UE implementation
RLC configuration		AM RLC This RLC is used for PDCP duplication	v1800
>sn-FieldLength	12		v1800
>t-Reassembly	Undefined	Selected by the receiving UE, up to UE implementation	v1800
>t-PollRetransmit	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>pollPDU	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>pollByte	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>maxRetxThreshold	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>t-StatusProhibit	Undefined	Selected by the receiving UE, up to UE implementation	v1800
>logicalChannelIdentity	FFS		v1800
MAC configuration associated to additional RLC configuration		This logical channel is used for PDCP duplication	v1800
>priority	1		v1800
>prioritisedBitRate	infinity		v1800
>logicalChannelGroup	0		v1800
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network.	v1800
>sl-HARQ-FeedbackEnabled	Undefined	Selected by the transmitting UE, up to UE implementation	v1800

Parameters that are specified for unicast of NR sidelink communication, which is used for the sidelink signalling radio bearer of protected PC5-S message except Direct Link Security Mode Complete, TS 24.587 or Prose Direct Link Security Mode Complete, TS 24.554. The SL-SRB using this SCCH configuration is named as SL-SRB2.

Name	Value	Semantics description	Ver
PDCP configuration
>t-Reordering	Undefined	Selected by the receiving UE, up to UE implementation
>pdcp-SN-Size	12
SRAP configuration		Specified for L2 U2U relay operation, which is used for U2U Remote UE's SL-SRB2 with the peer U2U Remote UE.
>sl-RemoteUE-SLRB-Identity	2	This parameter is only applicable to L2 U2U relay operation.
RLC configuration		AM RLC
>sn-FieldLength	12
>t-Reassembly	Undefined	Selected by the receiving UE, up to UE implementation
>t-PollRetransmit	Undefined	Selected by the transmitting UE, up to UE implementation
>pollPDU	Undefined	Selected by the transmitting UE, up to UE implementation
>pollByte	Undefined	Selected by the transmitting UE, up to UE implementation
>maxRetxThreshold	Undefined	Selected by the transmitting UE, up to UE implementation
>t-StatusProhibit	Undefined	Selected by the receiving UE, up to UE implementation
>logicalChannelIdentity	2
MAC configuration
>priority	1
>prioritisedBitRate	infinity
>logicalChannelGroup	0
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network.
>sl-HARQ-FeedbackEnabled	Undefined	Selected by the transmitting UE, up to UE implementation
RLC configuration		AM RLC This RLC is used for PDCP duplication	v1800
>sn-FieldLength	12		v1800
>t-Reassembly	Undefined	Selected by the receiving UE, up to UE implementation	v1800
>t-PollRetransmit	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>pollPDU	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>pollByte	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>maxRetxThreshold	Undefined	Selected by the transmitting UE, up to UE implementation	v1800
>t-StatusProhibit	Undefined	Selected by the receiving UE, up to UE implementation	v1800
>logicalChannelIdentity	FFS		v1800
MAC configuration associated to additional RLC configuration		This logical channel is used for PDCP duplication	v1800
>priority	1		v1800
>prioritisedBitRate	infinity		v1800
>logicalChannelGroup	0		v1800
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network.	v1800
>sl-HARQ-FeedbackEnabled	Undefined	Selected by the transmitting UE, up to UE implementation	v1800

Parameters that are specified for NR sidelink discovery, which is used for the sidelink signalling radio bearer of NR sidelink discovery messages (e.g., Announcement message, Solicitation message and Response message, see TS 23.304). The SL-SRB using this SCCH configuration is named as SL-SRB4.

Name	Value	Semantics description
PDCP configuration
>t-Reordering	Undefined	Selected by the receiving UE, up to UE implementation
>pdcp-SN-Size	12
RLC configuration		UM RLC
>sn-FieldLength	6
>t-Reassembly	Undefined	Selected by the receiving UE, up to UE implementation
>logicalChannelIdentity	58
MAC configuration
>priority	1
>prioritisedBitRate	infinity
>logicalChannelGroup	0
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network.
>sl-HARQ-FeedbackEnabled	disabled	HARQ feedback is not supported for NR sidelink discovery transmission

Parameters that are specified for NR sidelink L2 U2N Relay operations, which is used for the PC5 Relay RLC channel for Remote UE's SRB0 message transmission/reception. The PC5 Relay RLC channel using this configuration is named as SL-RLC0.

Name	Value	Semantics description
RLC configuration		AM
>sn-FieldLength	12
>t-Reassembly	Undefined	Selected by the receving UE, up to UE implementation
>t-PollRetransmit	Undefined	Selected by the transmitting UE, up to UE implementation
>pollPDU	Undefined	Selected by the transmitting UE, up to UE implementation
>pollByte	Undefined	Selected by the transmitting UE, up to UE implementation
>maxRetxThreshold	Undefined	Selected by the transmitting UE, up to UE implementation
>t-StatusProhibit	Undefined	Selected by the receiving UE, up to UE implementation
>logicalChannelIdentity	56
MAC configuration
>priority	1
>proritisedBitRate	Inifinity
>logicalChannelGroup	0
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network. The scheduling request configuration is not applicable to L2 U2N Remote UE.
>sl-HARQ-FeedbackEnabled	Undefined	Selected by the transmitting UE, up to UE implementation

Parameters that are specified for NR sidelink L2 U2U Relay operations, which is used for the PC5 Relay RLC channel for U2U Remote UE's SL-SRB0/1/2/3 message transmission/reception with the peer U2U Remote UE. The PC5 Relay RLC channel using this configuration is named as SL-U2U-RLC.

Name	Value	Semantics description
RLC configuration		AM
>sn-FieldLength	12
>t-Reassembly	Undefined	Selected by the receving UE, up to UE implementation
>t-PollRetransmit	Undefined	Selected by the transmitting UE, up to UE implementation
>pollPDU	Undefined	Selected by the transmitting UE, up to UE implementation
>pollByte	Undefined	Selected by the transmitting UE, up to UE implementation
>maxRetxThreshold	Undefined	Selected by the transmitting UE, up to UE implementation
>t-StatusProhibit	Undefined	Selected by the receiving UE, up to UE implementation
>logicalChannelIdentity	55
MAC configuration
>priority	1
>proritisedBitRate	Inifinity
>logicalChannelGroup	0
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network.
>sl-HARQ-FeedbackEnabled	Undefined	Selected by the transmitting UE, up to UE implementation

9.1.1.5 STCH configuration p. 1482

Parameters that are specified for NR sidelink communication, which is used for the sidelink data radio bearer.

Name	Value	Semantics description
PDCP configuration
>t-Reordering	Undefined	Selected by the receiving UE, up to UE implementation
>pdcp-SN-Size	12	For broadcast and groupcast of NR sidelink communication
>maxCID	15	For broadcast and groupcast of NR sidelink communication
>profiles
RLC configuration		For broadcast and groupcast of NR sidelink communication, uni-directional UM RLC UM window size is set to 32
>t-Reassembly	Undefined	Selected by the receiving UE, up to Up to UE implementation
>sn-FieldLength	6	For broadcast and groupcast of NR sidelink communication
>logicalChannelIdentity	Undefined	Selected by the transmitting UE, up to UE implementation
MAC configuration
>priority

9.1.1.6 MCCH configuration p. 1482

Parameters that are specified for MCCH.

Name	Value	Semantics description
RLC configuration		UM RLC
>sn-FieldLength	6
>t-Reassembly	ms0

9.1.1.7 MTCH configuration for MBS broadcast p. 1483

Parameters that are specified for MBS broadcast MTCH.

Name	Value	Semantics description
PDCP configuration
>t-Reordering	ms0
>pdcp-SN-SizeDL	18
RLC configuration		UM RLC
>sn-FieldLength	12
>t-Reassembly	ms0

9.1.2 Void

9.2 Default radio configurations p. 1483

The following clauses only list default values for REL-15 parameters included in protocol version v15.3.0. For all fields introduced in a later protocol version, the default value is "released" or "false" unless explicitly specified otherwise. If the UE is to apply default configuration while it is configured with some critically extended fields, the UE shall apply the original version of those fields with only default values.

9.2.1 Default SRB configurations p. 1483

Parameters

Name	Value			Semantics description	Ver
Name	SRB1	SRB2	SRB3	Semantics description	Ver
PDCP-Config
>t-Reordering	infinity
RLC-Config CHOICE	Am
ul-AM-RLC
>sn-FieldLength	size12
>t-PollRetransmit	ms45
>pollPDU	infinity
>pollByte	infinity
>maxRetxThreshold	t8
dl-AM-RLC
>sn-FieldLength	size12
>t-Reassembly	ms35
>t-StatusProhibit	ms0
logicalChannelIdentity	1	2	3
LogicalChannelConfig
>priority	1	3	1
>prioritisedBitRate	infinity
>logicalChannelGroup	0

9.2.2 Default MAC Cell Group configuration p. 1483

Parameters

Name	Value	Semantics description	Ver
MAC Cell Group configuration
bsr-Config
>periodicBSR-Timer	sf10
>retxBSR-Timer	sf80
phr-Config
>phr-PeriodicTimer	sf10
>phr-ProhibitTimer	sf10
>phr-Tx-PowerFactorChange	dB1

9.2.3 Default values timers and constants p. 1484

Parameters

Name	Value	Semantics description	Ver
t310	ms1000
n310	n1
t311	ms30000
n311	n1

9.2.4 Default PC5 Relay RLC Channel p. 1484

Parameters of the PC5 Relay RLC Channel used for Remote UE's SRB1 RRC message transmission and reception. The PC5 Relay RLC Channel using this configuration is named as SL-RLC1.

Name	Value	Semantics description
RLC configuration		AM
>sn-FieldLength	12
>t-Reassembly	Undefined	Selected by the receving UE, up to UE implementation
>t-PollRetransmit	Undefined	Selected by the transmitting UE, up to UE implementation
>pollPDU	Undefined	Selected by the transmitting UE, up to UE implementation
>pollByte	Undefined	Selected by the transmitting UE, up to UE implementation
>maxRetxThreshold	Undefined	Selected by the transmitting UE, up to UE implementation
>t-StatusProhibit	Undefined	Selected by the receiving UE, up to UE implementation
>logicalChannelIdentity	57
MAC configuration
>priority	1
>proritisedBitRate	Inifinity
>logicalChannelGroup	0
>schedulingRequestId	0	The scheduling request configuration with this value is applicable for this SCCH if configured by the network.

9.2.5 Default SRAP configurations p. 1484

Parameters that are used for reception of Remote UE's RRCResume, RRCRelease in response to an RRCResumeRequest/ RRCResumeRequest1 and RRCReestablishment messages.

Name	Value	Semantics description
SL SRAP Config
>sl-LocalIdentity	Undefined	SRAP PDUs with any local identity will be submitted to the SRB1 PDCP entity.
>sl-RemoteUE-RB-Identity	SRB1

9.3 Sidelink pre-configured parameters p. 1485

This ASN.1 segment is the start of the NR definitions of pre-configured sidelink parameters.

– NR-Sidelink-Preconf p. 1485

-- ASN1START
-- TAG-NR-SIDELINK-PRECONF-DEFINITIONS-START
NR-Sidelink-Preconf DEFINITIONS AUTOMATIC TAGS ::=
BEGIN
IMPORTS
 SL-RelayUE-ConfigU2U-r18,
 SL-RemoteUE-ConfigU2U-r18,
 SL-RemoteUE-Config-r17,
 SL-DRX-ConfigGC-BC-r17,
 SL-Freq-Id-r16,
 maxNrofFreqSL-1-r18,
 SL-FreqConfigCommon-r16,
 SL-RadioBearerConfig-r16,
 SL-RLC-BearerConfig-r16,
 SL-EUTRA-AnchorCarrierFreqList-r16,
 SL-NR-AnchorCarrierFreqList-r16,
 SL-MeasConfigCommon-r16,
 SL-UE-SelectedConfig-r16,
 TDD-UL-DL-ConfigCommon,
 maxNrofFreqSL-r16,
 maxNrofSLRB-r16,
 maxSL-LCID-r16
FROM NR-RRC-Definitions;
-- TAG-NR-SIDELINK-PRECONF-DEFINITIONS-STOP
-- ASN1STOP

– SL-PosPreconfigurationNR p. 1485

The IE SL-PosPreconfigurationNR includes the sidelink pre-configured parameters used for NR sidelink positioning. Need codes or conditions specified for subfields in SL-PosPreconfigurationNR do not apply.

SL-PosPreconfigurationNR information elements

-- ASN1START
-- TAG-SL-POSPRECONFIGURATIONNR-START
SL-PosPreconfigurationNR-r18 ::= SEQUENCE {
 sl-PosPreconfigFreqInfoList-r18 SEQUENCE
  (SIZE (1..maxNrofFreqSL-r16)) OF SL-FreqConfigCommon-r16 OPTIONAL,
 ...
}
-- TAG-SL-POSPRECONFIGURATIONNR-STOP
-- ASN1STOP

SL-PosPreconfigurationNR field descriptions
sl-PosPreconfigFreqInfoList This field indicates the NR sidelink positioning configuration some carrier frequency(ies). In this release, only one SL-FreqConfig can be configured in the list.

– SL-PreconfigurationNR p. 1486

The IE SL-PreconfigurationNR includes the sidelink pre-configured parameters used for NR sidelink communication. Need codes or conditions specified for subfields in SL-PreconfigurationNR do not apply.

SL-PreconfigurationNR information elements

-- ASN1START
-- TAG-SL-PRECONFIGURATIONNR-START
SL-PreconfigurationNR-r16 ::= SEQUENCE {
 sidelinkPreconfigNR-r16 SidelinkPreconfigNR-r16,
 ...
}
SidelinkPreconfigNR-r16 ::= SEQUENCE {
 sl-PreconfigFreqInfoList-r16
  SEQUENCE (SIZE (1..maxNrofFreqSL-r16)) OF SL-FreqConfigCommon-r16
  OPTIONAL,
 sl-PreconfigNR-AnchorCarrierFreqList-r16
  SL-NR-AnchorCarrierFreqList-r16
  OPTIONAL,
 sl-PreconfigEUTRA-AnchorCarrierFreqList-r16
  SL-EUTRA-AnchorCarrierFreqList-r16
  OPTIONAL,
 sl-RadioBearerPreConfigList-r16
  SEQUENCE (SIZE (1..maxNrofSLRB-r16)) OF SL-RadioBearerConfig-r16
  OPTIONAL,
 sl-RLC-BearerPreConfigList-r16
  SEQUENCE (SIZE (1..maxSL-LCID-r16)) OF SL-RLC-BearerConfig-r16
  OPTIONAL,
 sl-MeasPreConfig-r16
  SL-MeasConfigCommon-r16
  OPTIONAL,
 sl-OffsetDFN-r16
  INTEGER (1..1000)
  OPTIONAL,
 t400-r16
  ENUMERATED{ms100, ms200, ms300, ms400, ms600, ms1000, ms1500, ms2000}
  OPTIONAL,
 sl-MaxNumConsecutiveDTX-r16
  ENUMERATED {n1, n2, n3, n4, n6, n8, n16, n32}
  OPTIONAL,
 sl-SSB-PriorityNR-r16
  INTEGER (1..8)
  OPTIONAL,
 sl-PreconfigGeneral-r16
  SL-PreconfigGeneral-r16
  OPTIONAL,
 sl-UE-SelectedPreConfig-r16
  SL-UE-SelectedConfig-r16
  OPTIONAL,
 sl-CSI-Acquisition-r16
  ENUMERATED {enabled}
  OPTIONAL,
 sl-RoHC-Profiles-r16
  SL-RoHC-Profiles-r16
  OPTIONAL,
 sl-MaxCID-r16
  INTEGER (1..16383)
  DEFAULT 15,
 ...,
 [[
 sl-DRX-PreConfigGC-BC-r17
  SL-DRX-ConfigGC-BC-r17
  OPTIONAL,
 sl-TxProfileList-r17
  SL-TxProfileList-r17
  OPTIONAL,
 sl-PreconfigDiscConfig-r17
  SL-RemoteUE-Config-r17
  OPTIONAL
 ]],
 [[
 sl-PreconfigFreqInfoListSizeExt-v1800 SEQUENCE
  (SIZE (1..maxNrofFreqSL-1-r18)) OF
   SL-FreqConfigCommon-r16 OPTIONAL,
 sl-RLC-BearerConfigListSizeExt-v1800 SEQUENCE
  (SIZE (1..maxSL-LCID-r16)) OF
   SL-RLC-BearerConfig-r16 OPTIONAL,
 sl-SyncFreqList-r18 SEQUENCE
  (SIZE (1..maxNrofFreqSL-r16)) OF SL-Freq-Id-r16 OPTIONAL,
 sl-SyncTxMultiFreq-r18 ENUMERATED {true} OPTIONAL,
 sl-PreconfigDiscConfig-v1800 SL-PreconfigDiscConfig-v1800 OPTIONAL
 ]]
}
SL-TxProfileList-r17 ::= SEQUENCE (SIZE (1..256)) OF SL-TxProfile-r17
SL-TxProfile-r17 ::= ENUMERATED
 {drx-Compatible, drx-Incompatible, spare6, spare5, spare4, spare3, spare2, spare1}
SL-PreconfigGeneral-r16 ::= SEQUENCE {
 sl-TDD-Configuration-r16
  TDD-UL-DL-ConfigCommon 
  OPTIONAL,
 reservedBits-r16
  BIT STRING (SIZE (2))
  OPTIONAL,
 ...
}
SL-RoHC-Profiles-r16 ::= SEQUENCE {
 profile0x0001-r16 BOOLEAN,
 profile0x0002-r16 BOOLEAN,
 profile0x0003-r16 BOOLEAN,
 profile0x0004-r16 BOOLEAN,
 profile0x0006-r16 BOOLEAN,
 profile0x0101-r16 BOOLEAN,
 profile0x0102-r16 BOOLEAN,
 profile0x0103-r16 BOOLEAN,
 profile0x0104-r16 BOOLEAN
}
SL-PreconfigDiscConfig-v1800 ::= SEQUENCE {
 sl-RelayUE-PreconfigU2U-r18 SL-RelayUE-ConfigU2U-r18,
 sl-RemoteUE-PreconfigU2U-r18 SL-RemoteUE-ConfigU2U-r18
}
-- TAG-SL-PRECONFIGURATIONNR-STOP
-- ASN1STOP

SL-PreconfigurationNR field descriptions
sl-DRX-PreConfig-GC-BC This field indicates the sidelink DRX configuration for groupcast and broadcast communication, as specified in TS 38.321.
sl-OffsetDFN Indicates the timing offset for the UE to determine DFN timing when GNSS is used for timing reference. Value 1 corresponds to 0.001 milliseconds, value 2 corresponds to 0.002 milliseconds, and so on. If the field is absent, no offset is applied.
sl-PreconfigDiscConfig This field indicates the configuration for discovery message transmission used by NR sidelink U2N Remote UE, used by NR sidelink U2U Relay UE or used by NR sidelink U2U Remote UE. sl-P
sl-PreconfigEUTRA-AnchorCarrierFreqList This field indicates the EUTRA anchor carrier frequency list, which can provide the NR sidelink communication configuration.
sl-PreconfigFreqInfoList, sl-PreconfigFreqInfoListSizeExt This field indicates the NR sidelink communication and/ or NR sidelink discovery configuration some carrier frequency(ies). In this release, only one SL-FreqConfig can be configured in sl-PreconfigFreqInfoList. More entries of SL-FreqConfig can be configured in sl-PreconfigFreqInfoListSizeExt.
sl-PreconfigNR-AnchorCarrierFreqList This field indicates the NR anchor carrier frequency list, which can provide the NR sidelink communication configuration.
sl-RadioBearerPreConfigList This field indicates one or multiple sidelink radio bearer configurations.
sl-RLC-BearerPreConfigList, sl-RLC-BearerPreConfigListSizeExt This field indicates one or multiple sidelink RLC bearer configurations.
sl-RoHC-Profiles This field indicates the supported RoHC profiles for NR sidelink communications.
sl-SSB-PriorityNR This field indicates the priority of NR sidelink SSB transmission and reception.
sl-SyncFreqList Indicates a list of candidate carrier frequencies that can be used for the synchronisation of NR sidelink communication. For SL-Freq-Id-r16, the value 1 corresponds to the frequency of first entry in sl-PreconfigFreqInfoList, the value 2 corresponds to the frequency of first entry in sl-PreconfigFreqInfoListSizeExt, the value 3 corresponds to the frequency of second entry in sl-PreconfigFreqInfoListSizeExt and so on.
sl-SyncTxMultiFreq Indicates that the UE transmits S-SSB on multiple carrier frequencies for NR sidelink communication. If this field is absent, the UE transmits S-SSB only on the synchronisation carrier frequency.
sl-TxProfileList List of one or multiple Tx profiles, indicating the compatibility of supporting SL DRX as specified in TS 38.321. It is up to the UE implementation whether/how to apply this field.

– End of NR-Sidelink-Preconf p. 1488

-- ASN1START
END
-- ASN1STOP

9.4 Radio Information Related to Discovery Message p. 1489

This clause specifies RRC information elements that are transferred in Discovery Message.

– SL-AccessInfo-L2U2N p. 1489

The IE SL-AccessInfo-L2U2N includes the radio information included in Discovery Message used for L2 U2N relay operation.

SL-AccessInfo-L2U2N information elements

-- ASN1START
-- TAG-SL-ACCESSINFO-L2U2N-START
NR-Sidelink-DiscoveryMessage DEFINITIONS AUTOMATIC TAGS ::=
BEGIN
IMPORTS
 CellAccessRelatedInfo,
 SL-ServingCellInfo-r17
FROM NR-RRC-Definitions;
SL-AccessInfo-L2U2N-r17 ::= SEQUENCE {
 cellAccessRelatedInfo-r17 CellAccessRelatedInfo,
 sl-ServingCellInfo-r17 SL-ServingCellInfo-r17,
 ...
}
END
-- TAG-SL-ACCESSINFO-L2U2N-STOP
-- ASN1STOP

9.5 Radio Information Related to TX Profile p. 1490

This clause specifies RRC information elements that are transferred in Tx Profile.

– SL-TxProfile p. 1490

The IE SL-TXProfile includes the Tx profile information.

SL-TxProfile information elements

-- ASN1START
-- TAG-SL-TXPROFILE-START
SL-TxProfile DEFINITIONS AUTOMATIC TAGS ::=
BEGIN
SL-TxProfile-v1800 ::= ENUMERATED {
 backwardsCompatible, backwardsIncompatible,
 spare6, spare5, spare4, spare3, spare2, spare1
}
END
-- TAG-SL-TXPROFILE-STOP
-- ASN1STOP

10 Generic error handling p. 1490

10.1 General p. 1490

The generic error handling defined in the subsequent clauses applies unless explicitly specified otherwise e.g. within the procedure specific error handling.

The UE shall consider a value as not comprehended when it is set:

to an extended value that is not defined in the version of the transfer syntax supported by the UE;
to a spare or reserved value unless the specification defines specific behaviour that the UE shall apply upon receiving the concerned spare/reserved value.

The UE shall consider a field as not comprehended when it is defined:

as spare or reserved unless the specification defines specific behaviour that the UE shall apply upon receiving the concerned spare/reserved field.

10.2 ASN.1 violation or encoding error p. 1490

The UE shall:

1 >

when receiving an RRC message on the BCCH, CCCH, PCCH, MCCH or a PC5 RRC message on SBCCH for which the abstract syntax is invalid [6]:

2 >

ignore the message.

10.3 Field set to a not comprehended value p. 1490

The UE shall, when receiving an RRC message or PC5 RRC message on any logical channel:

1 >

if the message includes a field that has a value that the UE does not comprehend:

2 >

if a default value is defined for this field:

3 >

treat the message while using the default value defined for this field;

2 >

else if the concerned field is optional:

3 >

treat the message as if the field were absent and in accordance with the need code for absence of the concerned field;

2 >

else:

3 >

treat the message as if the field were absent and in accordance with clause 10.4.

10.4 Mandatory field missing p. 1491

The UE shall:

1 >

if the message includes a field that is mandatory to include in the message (e.g. because conditions for mandatory presence are fulfilled) and that field is absent or treated as absent:

2 >

if the RRC message was not received on DCCH or CCCH; or

2 >

if the PC5 RRC message was not received on SCCH:

3 >

if the field concerns a (sub-field of) an entry of a list (i.e. a SEQUENCE OF):

4 >

treat the list as if the entry including the missing or not comprehended field was absent;

3 >

else if the field concerns a sub-field of another field, referred to as the 'parent' field i.e. the field that is one nesting level up compared to the erroneous field:

4 >

consider the 'parent' field to be set to a not comprehended value;

4 >

apply the generic error handling to the subsequent 'parent' field(s), until reaching the top nesting level i.e. the message level;

3 >

else (field at message level):

4 >

ignore the message.

The following ASN.1 further clarifies the levels applicable in case of nested error handling for errors in extension fields.

-- /example/ ASN1START
-- Example with extension addition group
ItemInfoList ::= SEQUENCE (SIZE (1..max)) OFItemInfo
ItemInfo ::= SEQUENCE {
 itemIdentity  INTEGER (1..max),
 field1        Field1,
 field2        Field2  OPTIONAL, -- Need N
 ...,
 [[
 field3-r9  Field3-r9  OPTIONAL,  -- Cond Cond1
 field4-r9  Field4-r9  OPTIONAL  -- Need N
 ]]
}
-- Example with traditional non-critical extension (empty sequence)
BroadcastInfoBlock1 ::= SEQUENCE {
 itemIdentity  INTEGER (1..max),
 field1        Field1,
 field2        Field2  OPTIONAL,  -- Need N
 nonCriticalExtension  BroadcastInfoBlock1-v940-IEs  OPTIONAL
}
BroadcastInfoBlock1-v940-IEs::= SEQUENCE {
 field3-r9  Field3-r9               OPTIONAL,  -- Cond Cond1
 field4-r9  Field4-r9               OPTIONAL,  -- Need N
 nonCriticalExtension  SEQUENCE {}  OPTIONAL   -- Need S
}
-- ASN1STOP

The UE shall, apply the following principles regarding the levels applicable in case of nested error handling:

an extension addition group is not regarded as a level on its own. E.g. in the ASN.1 extract in the previous, a error regarding the conditionality of field3 would result in the entire itemInfo entry to be ignored (rather than just the extension addition group containing field3 and field4);
a traditional nonCriticalExtension is not regarded as a level on its own. E.g. in the ASN.1 extract in the previous, an error regarding the conditionality of field3 would result in the entire BroadcastInfoBlock1 to be ignored (rather than just the non-critical extension containing field3 and field4).

10.5 Not comprehended field p. 1492

The UE shall, when receiving an RRC message on any logical channel:

1 >

if the message includes a field that the UE does not comprehend:

2 >

treat the rest of the message as if the field was absent.