5G NR System Information Block1

SIB1 contains information relevant when evaluating if a UE is allowed to access a cell and defines the scheduling of other system information. It also contains radio resource configuration information that is common for all UEs and barring information applied to the unified access control.

Signalling radio bearer: N/A
RLC-SAP: TM
Logical channels: BCCH
Direction: Network to UE

SIB 1 Contains information about other SI available in the cell, information relevant for the UE to evaluate whether it may access the cell and part of the information required to perform RRC IDLE mode mobility procedures, in particular:

SIB1 known as minimum system information, because they provide the basic parameter set required for initial access .
Acquire Other System information block
SIB 1 known as Remaining minim system
list of supported PLMNs and additional PLMN related information (e.g. NR cell global identities (NR-CGIs), Tracking Area Codes (TAC), RAN area codes
basic radio configuration of the cell which is common to all UEs in the cell, e.g.downlink and uplink common channels configuration and SSB configuration
Perodicity for SIB1 is 160 ms with repetition within 160 ms
Its uses PDSCH

— ASN1START

— TAG-SIB1-START

SIB1 ::= SEQUENCE {

cellSelectionInfo SEQUENCE {

q-RxLevMin Q-RxLevMin,

q-RxLevMinOffset INTEGER (1..8) OPTIONAL, — Need S

q-RxLevMinSUL Q-RxLevMin OPTIONAL, — Need R

q-QualMin Q-QualMin OPTIONAL, — Need S

q-QualMinOffset INTEGER (1..8) OPTIONAL — Need S

} OPTIONAL, — Cond Standalone

cellAccessRelatedInfo CellAccessRelatedInfo,

connEstFailureControl ConnEstFailureControl OPTIONAL, — Need R

si-SchedulingInfo SI-SchedulingInfo OPTIONAL, — Need R

servingCellConfigCommon ServingCellConfigCommonSIB OPTIONAL, — Need R

ims-EmergencySupport ENUMERATED {true} OPTIONAL, — Need R

eCallOverIMS-Support ENUMERATED {true} OPTIONAL, — Cond Absent

ue-TimersAndConstants UE-TimersAndConstants OPTIONAL, — Need R

uac-BarringInfo SEQUENCE {

uac-BarringForCommon UAC-BarringPerCatList OPTIONAL, — Need S

uac-BarringPerPLMN-List UAC-BarringPerPLMN-List OPTIONAL, — Need S

uac-BarringInfoSetList UAC-BarringInfoSetList,

uac-AccessCategory1-SelectionAssistanceInfo CHOICE {

plmnCommon UAC-AccessCategory1-SelectionAssistanceInfo,

individualPLMNList SEQUENCE (SIZE (2..maxPLMN)) OF UAC-AccessCategory1-SelectionAssistanceInfo

} OPTIONAL — Need S

} OPTIONAL, — Need R

useFullResumeID ENUMERATED {true} OPTIONAL, — Need N

lateNonCriticalExtension OCTET STRING OPTIONAL,

nonCriticalExtension SEQUENCE{} OPTIONAL

}

UAC-AccessCategory1-SelectionAssistanceInfo ::= ENUMERATED {a, b, c}

— TAG-SIB1-STOP

— ASN1STOP

useFullResumeID Indicates which resume identifier and Resume request message should be used. UE uses fullI-RNTI and RRCResumeRequest1 if the field is present, or shortI-RNTI and RRCResumeRequest if the field is absent.

cellSelectionInfo Parameters for cell selection related to the serving cell.

ims-EmergencySupport Indicates whether the cell supports IMS emergency bearer services for UEs in limited service mode. If absent, IMS emergency call is not supported by the network in the cell for UEs in limited service mode.

q-QualMin Parameter “Q_qualmin” in TS 38.304 [20], applicable for serving cell. If the field is absent, the UE applies the (default) value of negative infinity for Q_qualmin.

q-QualMinOffset Parameter “Q_{qualminoffset}” in TS 38.304 [20]. Actual value Q_{qualminoffset} = field value [dB]. If the field is absent, the UE applies the (default) value of 0 dB for Q_{qualminoffset}. Affects the minimum required quality level in the cell.

q-RxLevMin Parameter “Q_rxlevmin” in TS 38.304 [20], applicable for serving cell.

q-RxLevMinOffset Parameter “Q_{rxlevminoffset}” in TS 38.304 [20]. Actual value Q_{rxlevminoffset} = field value * 2 [dB]. If absent, the UE applies the (default) value of 0 dB for Q_{rxlevminoffset}. Affects the minimum required Rx level in the cell.

q-RxLevMinSUL Parameter “Q_rxlevmin” in TS 38.304 [20], applicable for serving cell.

servingCellConfigCommon Configuration of the serving cell.

uac-AccessCategory1-SelectionAssistanceInfo Information used to determine whether Access Category 1 applies to the UE, as defined in TS 22.261 [25].

uac-BarringForCommon Common access control parameters for each access category. Common values are used for all PLMNs, unless overwritten by the PLMN specific configuration provided in uac-BarringPerPLMN-List. The parameters are specified by providing an index to the set of configurations (uac-BarringInfoSetList). UE behaviour upon absence of this field is specified in clause 5.3.14.2.

ue-TimersAndConstants Timer and constant values to be used by the UE.

CellAccessRelatedInfo

The IE CellAccessRelatedInfo indicates cell access related information for this cell.

CellAccessRelatedInfo information element

— ASN1START

— TAG-CELLACCESSRELATEDINFO-START

CellAccessRelatedInfo ::= SEQUENCE {

plmn-IdentityList PLMN-IdentityInfoList,

cellReservedForOtherUse ENUMERATED {true} OPTIONAL, — Need R

…

}

— TAG-CELLACCESSRELATEDINFO-STOP

— ASN1STOP

CellAccessRelatedInfo field descriptions

cellReservedForOtherUse

Indicates whether the cell is reserved, as defined in 38.304 [20]. The field is applicable to all PLMNs.

plmn-IdentityList

The plmn-IdentityList is used to configure a set of PLMN-IdentityInfoList elements. Each of those elements contains a list of one or more PLMN Identities and additional information associated with those PLMNs. The total number of PLMNs in the PLMN-IdentityInfoList does not exceed 12. The PLMN index is defined as b1+b2+…+b(n-1)+i for the PLMN included at the n-th entry of PLMN-IdentityInfoList and the i-th entry of its corresponding PLMN-IdentityInfo, where b(j) is the number of PLMN-Identity entries in each PLMN-IdentityInfo, respectively.

ConnEstFailureControl

The IE ConnEstFailureControl is used to configure parameters for connection establishment failure control.

ConnEstFailureControl information element

— ASN1START

— TAG-CONNESTFAILURECONTROL-START

ConnEstFailureControl ::= SEQUENCE {

connEstFailCount
ENUMERATED {n1, n2, n3, n4},

connEstFailOffsetValidity
ENUMERATED {s30, s60, s120, s240, s300, s420, s600, s900},

connEstFailOffset
INTEGER (0..15)
OPTIONAL    — Need S

}

	Parameter Name	Value	Field Value or configuration
ConnEstFailureControl	connEstFailCount	1,2,3,4
	connEstFailOffsetValidity	s30, s60, s120, s240, s300, s420, s600, s900 , second
	connEstFailOffset	0 to 15

ConnEstFailureControl field descriptions

connEstFailCount

Number of times that the UE detects T300 expiry on the same cell before applying connEstFailOffset.

connEstFailOffset

Parameter “Qoffsettemp” in TS 38.304 [20]. If the field is absent the value of infinity shall be used for “Qoffsettemp“.

connEstFailOffsetValidity

Amount of time that the UE applies connEstFailOffset before removing the offset from evaluation of the cell. Value s30 corresponds to 30 seconds, value s60 corresponds to 60 seconds, and so on.

SI-SchedulingInfo

The IE SI-SchedulingInfo contains information needed for acquisition of SI messages.

SI-SchedulingInfo information element

— ASN1START

— TAG–SI-SCHEDULINGINFO-START

SI-SchedulingInfo ::= SEQUENCE {

schedulingInfoList
SEQUENCE (SIZE (1..maxSI-Message)) OF SchedulingInfo,

si-WindowLength
ENUMERATED {s5, s10, s20, s40, s80, s160, s320, s640, s1280},

si-RequestConfig
SI-RequestConfig
OPTIONAL, — Cond MSG-1

si-RequestConfigSUL
SI-RequestConfig
OPTIONAL, — Cond SUL-MSG-1

systemInformationAreaID
BIT STRING (SIZE (24))
OPTIONAL,   — Need R

…

}

SchedulingInfo ::= SEQUENCE {

si-BroadcastStatus
ENUMERATED {broadcasting, notBroadcasting},

si-Periodicity
ENUMERATED {rf8, rf16, rf32, rf64, rf128, rf256, rf512},

sib-MappingInfo
SIB-Mapping

}

SIB-Mapping ::= SEQUENCE (SIZE
(1..maxSIB)) OF SIB-TypeInfo

SIB-TypeInfo ::= SEQUENCE {

type ENUMERATED
{sibType2, sibType3, sibType4, sibType5, sibType6, sibType7, sibType8,
sibType9,

spare8, spare7, spare6, spare5, spare4, spare3, spare2, spare1,… },

valueTag
INTEGER (0..31)
OPTIONAL, — Cond SIB-TYPE

areaScope
ENUMERATED {true}
OPTIONAL — Need S

}

— Configuration for Msg1 based SI Request

SI-RequestConfig::= SEQUENCE {

rach-OccasionsSI
SEQUENCE {

rach-ConfigSI
RACH-ConfigGeneric,

ssb-perRACH-Occasion
ENUMERATED {oneEighth, oneFourth, oneHalf, one, two, four, eight,
sixteen}

}
OPTIONAL, — Need R

si-RequestPeriod
ENUMERATED {one, two, four, six, eight, ten, twelve, sixteen}       OPTIONAL,   — Need R

si-RequestResources
SEQUENCE (SIZE (1..maxSI-Message)) OF SI-RequestResources

}

SI-RequestResources ::= SEQUENCE {

ra-PreambleStartIndex
INTEGER (0..63),

ra-AssociationPeriodIndex
INTEGER (0..15)
OPTIONAL,   — Need R

ra-ssb-OccasionMaskIndex
INTEGER (0..15)
OPTIONAL    — Need R

}

SchedulingInfo field descriptions

areaScope

Indicates that a SIB is area specific. If the field is absent, the SIB is cell specific.

si-BroadcastStatus

Indicates if the SI message is being broadcasted or not. Change of si-BroadcastStatus should not result in system information change notifications in Short Message transmitted with P-RNTI over DCI (see clause 6.5). The value of the indication is valid until the end of the BCCH modification period when set to broadcasting.

si-Periodicity

Periodicity of the SI-message in radio frames. Value rf8 corresponds to 8 radio frames, value rf16 corresponds to 16 radio frames, and so on.

SI-RequestConfig field descriptions

rach-OccasionsSI

Configuration of dedicated RACH Occasions for SI. If the field is absent, the UE uses the corresponding parameters configured in rach-ConfigCommon of the initial uplink BWP.

si-RequestPeriod

Periodicity of the SI-Request configuration in number of association periods.

si-RequestResources

If there is only one entry in the list, the configuration is used for all SI messages for which si-BroadcastStatus is set to notBroadcasting. Otherwise the 1st entry in the list corresponds to the first SI message in schedulingInfoList for which si-BroadcastStatus is set to notBroadcasting, 2nd entry in the list corresponds to the second SI message in schedulingInfoList for which si-BroadcastStatus is set to notBroadcasting and so on. Change of si-RequestResources should not result in system information change notification.

SI-RequestResources field descriptions

ra-AssociationPeriodIndex

Index of the association period in the si-RequestPeriod in which the UE can send the SI request for SI message(s) corresponding to this SI-RequestResources, using the preambles indicated by ra-PreambleStartIndex and rach occasions indicated by ra-ssb-OccasionMaskIndex.

ra-PreambleStartIndex

If N SSBs are associated with a RACH occasion, where N > = 1, for the i-th SSB (i=0, …, N-1) the preamble with preamble index = ra-PreambleStartIndex + i is used for SI request; For N < 1, the preamble with preamble index = ra-PreambleStartIndex is used for SI request.

SI-SchedulingInfo field descriptions

si-RequestConfig

Configuration of Msg1 resources that the UE uses for requesting SI-messages for which si-BroadcastStatus is set to notBroadcasting. If the field is absent the UE uses Msg3 to request SI-messages for which si-BroadcastStatus is set to notBroadcasting (if any).

si-RequestConfigSUL

si-WindowLength

The length of the SI scheduling window. Value s5 corresponds to 5 slots, value s10 corresponds to 10 slots and so on. The network always configures si-WindowLength to be shorter than or equal to the si-Periodicity.

systemInformationAreaID

Indicates the system information area that the cell belongs to, if any. Any SIB with areaScope within the SI is considered to belong to this systemInformationAreaID. The systemInformationAreaID is unique within a PLMN.

SystemInformation (SI)

The SystemInformation message is used to convey one or more System Information Blocks. All the SIBs included are transmitted with the same periodicity.

Signalling radio bearer: N/A

RLC-SAP: TM

Logical channels: BCCH

Direction: Network to UE

SystemInformation message

— ASN1START

— TAG-SYSTEMINFORMATION-START

SystemInformation ::= SEQUENCE {

criticalExtensions CHOICE {

systemInformation SystemInformation-IEs,

criticalExtensionsFuture SEQUENCE {}

}

SystemInformation-IEs ::= SEQUENCE {

sib-TypeAndInfo SEQUENCE (SIZE (1..maxSIB)) OF CHOICE {

sib2 SIB2,

sib3 SIB3,

sib4 SIB4,

sib5 SIB5,

sib6 SIB6,

sib7 SIB7,

sib8 SIB8,

sib9 SIB9,

…

lateNonCriticalExtension OCTET STRING OPTIONAL,

nonCriticalExtension SEQUENCE {} OPTIONAL

}

— TAG-SYSTEMINFORMATION-STOP

— ASN1STOP

ServingCellConfigCommonSIB

The IE ServingCellConfigCommonSIB is used to configure cell specific parameters of a UE’s serving cell in SIB1

DownlinkConfigCommon

The IE DownlinkConfigCommon provides common downlink parameters of a cell.

DownlinkConfigCommon information element

DOWNLINKCONFIGCOMMON-START

DownlinkConfigCommon ::= SEQUENCE {

frequencyInfoDL FrequencyInfoDL OPTIONAL, — Cond InterFreqHOAndServCellAdd

initialDownlinkBWP BWP-DownlinkCommon OPTIONAL, — Cond ServCellAdd

…

}

DownlinkConfigCommon field descriptions

frequencyInfoDL

Basic parameters of a downlink carrier and transmission thereon.

initialDownlinkBWP

The initial downlink BWP configuration for a SpCell (PCell of MCG or SCG) and SCell.The network configures the locationAndBandwidth so that the initial downlink BWP contains the entire CORESET#0 of this serving cell in the frequency domain.

DownlinkConfigCommonSIB

The IE DownlinkConfigCommonSIB provides common downlink parameters of a cell.

DownlinkConfigCommonSIB ::= SEQUENCE {

frequencyInfoDL
FrequencyInfoDL-SIB,

initialDownlinkBWP
BWP-DownlinkCommon,

bcch-Config
BCCH-Config,

pcch-Config
PCCH-Config,

…

}

BCCH-Config ::= SEQUENCE {

modificationPeriodCoeff
ENUMERATED {n2, n4, n8, n16},

…

}

PCCH-Config ::= SEQUENCE {

defaultPagingCycle
PagingCycle,

nAndPagingFrameOffset
CHOICE {

oneT
NULL,

halfT
INTEGER (0..1),

quarterT INTEGER (0..3),

oneEighthT
INTEGER (0..7),

oneSixteenthT
INTEGER (0..15)

ns ENUMERATED
{four, two, one},

firstPDCCH-MonitoringOccasionOfPO
CHOICE {

sCS15KHZoneT
SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..139),

sCS30KHZoneT-SCS15KHZhalfT
SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..279),

sCS60KHZoneT-SCS30KHZhalfT-SCS15KHZquarterT SEQUENCE (SIZE
(1..maxPO-perPF)) OF INTEGER (0..559),

sCS120KHZoneT-SCS60KHZhalfT-SCS30KHZquarterT-SCS15KHZoneEighthT SEQUENCE (SIZE (1..maxPO-perPF)) OF
INTEGER (0..1119),

sCS120KHZhalfT-SCS60KHZquarterT-SCS30KHZoneEighthT-SCS15KHZoneSixteenthT

SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..2239),

sCS120KHZquarterT-SCS60KHZoneEighthT-SCS30KHZoneSixteenthT SEQUENCE (SIZE (1..maxPO-perPF))
OF INTEGER (0..4479),

sCS120KHZoneEighthT-SCS60KHZoneSixteenthT SEQUENCE (SIZE
(1..maxPO-perPF)) OF INTEGER (0..8959),

sCS120KHZoneSixteenthT
SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..17919)

} OPTIONAL, — Need R

…

}

DownlinkConfigCommonSIB field descriptions

frequencyInfoDL-SIB

Basic parameters of a downlink carrier and transmission thereon.

initialDownlinkBWP

The initial downlink BWP configuration for a SpCell (PCell of MCG or SCG). The network configures the locationAndBandwidth so that the initial downlink BWP contains the entire CORESET#0 of this serving cell in the frequency domain. The UE applies the locationAndBandwidth upon reception of this field (e.g. to determine the frequency position of signals described in relation to this locationAndBandwidth) but it may keep the bandwidth of CORESET#0 until after reception of RRCSetup/RRCResume/RRCReestablishment.

bcch-Config

The modification period related configuration.

pcch-Config

The paging related configuration.

BCCH-Config field descriptions

modificationPeriodCoeff

Actual modification period, expressed in number of radio frames m = modificationPeriodCoeff * defaultPagingCycle, see clause 5.2.2.2.2. n2 corresponds to value 2, n4 corresponds to value 4, and so on.

PCCH-Config field descriptions

defaultPagingCycle

Default paging cycle, used to derive ‘T’ in TS 38.304 [20]. Value rf32 corresponds to 32 radio frames, value rf64 corresponds to 64 radio frames and so on.

firstPDCCH-MonitoringOccasionOfPO

Points out the first PDCCH monitoring occasion for paging of each PO of the PF, see TS 38.304 [20].

nAndPagingFrameOffset

Used to derive the number of total paging frames in T (corresponding to parameter N in TS 38.304 [20]) and paging frame offset (corresponding to parameter PF_offset in TS 38.304 [20]). A value of oneSixteenthT corresponds to T / 16, a value of oneEighthT corresponds to T / 8, and so on.

If pagingSearchSpace is set to zero and if SS/PBCH block and CORESET multiplexing pattern is 2 or 3 (as specified in TS 38.213 [13]):

– for ssb-periodicityServingCell of 5 or 10 ms, N can be set to one of {oneT, halfT, quarterT, oneEighthT, oneSixteenthT}

– for ssb-periodicityServingCell of 20 ms, N can be set to one of {halfT, quarterT, oneEighthT, oneSixteenthT}

– for ssb-periodicityServingCell of 40 ms, N can be set to one of {quarterT, oneEighthT, oneSixteenthT}

– for ssb-periodicityServingCell of 80 ms, N can be set to one of {oneEighthT, oneSixteenthT}

– for ssb-periodicityServingCell of 160 ms, N can be set to oneSixteenthT

If pagingSearchSpace is set to zero and if SS/PBCH block and CORESET multiplexing pattern is 1 (as specified in TS 38.213 [13]), N can be set to one of {halfT, quarterT, oneEighthT, oneSixteenthT}

If pagingSearchSpace is not set to zero, N can be configured to one of {oneT, halfT, quarterT, oneEighthT, oneSixteenthT}

Number of paging occasions per paging frame.

FrequencyInfoDL-SIB

The IE FrequencyInfoDL-SIB provides basic parameters of a downlink carrier and transmission thereon

FrequencyInfoDL-SIB ::= SEQUENCE {

frequencyBandList MultiFrequencyBandListNR-SIB,

offsetToPointA INTEGER (0..2199),

scs-SpecificCarrierList SEQUENCE (SIZE (1..maxSCSs)) OF SCS-SpecificCarrier

}

FrequencyInfoDL-SIB field descriptions

offsetToPointA

Represents the offset to Point A as defined in TS 38.211 [16], clause 4.4.4.2.

frequencyBandList

List of one or multiple frequency bands to which this carrier(s) belongs.

scs-SpecificCarrierList

A set of carriers for different subcarrier spacings (numerologies). Defined in relation to Point A (see TS 38.211 [16], clause 5.3). The network configures this for all SCSs that are used in DL BWPs in this serving cell.

PDCCH-ConfigCommon

The IE PDCCH-ConfigCommon is used to configure cell specific PDCCH parameters provided in SIB as well as in dedicated signalling

PDCCH-ConfigCommon information element

PDCCH-ConfigCommon ::= SEQUENCE {

controlResourceSetZero ControlResourceSetZero OPTIONAL, — Cond InitialBWP-Only

commonControlResourceSet ControlResourceSet OPTIONAL, — Need R

searchSpaceZero SearchSpaceZero OPTIONAL, — Cond InitialBWP-Only

commonSearchSpaceList SEQUENCE (SIZE(1..4)) OF SearchSpace OPTIONAL, — Need R

searchSpaceSIB1 SearchSpaceId OPTIONAL, — Need S

searchSpaceOtherSystemInformation SearchSpaceId OPTIONAL, — Need S

pagingSearchSpace SearchSpaceId OPTIONAL, — Need S

ra-SearchSpace SearchSpaceId OPTIONAL, — Need S

…,

[[

firstPDCCH-MonitoringOccasionOfPO CHOICE {

sCS15KHZoneT SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..139),

sCS30KHZoneT-SCS15KHZhalfT SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..279),

sCS60KHZoneT-SCS30KHZhalfT-SCS15KHZquarterT SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..559),

sCS120KHZoneT-SCS60KHZhalfT-SCS30KHZquarterT-SCS15KHZoneEighthT SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..1119),

sCS120KHZhalfT-SCS60KHZquarterT-SCS30KHZoneEighthT-SCS15KHZoneSixteenthT SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..2239),

sCS120KHZquarterT-SCS60KHZoneEighthT-SCS30KHZoneSixteenthT SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..4479),

sCS120KHZoneEighthT-SCS60KHZoneSixteenthT SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..8959),

sCS120KHZoneSixteenthT SEQUENCE (SIZE (1..maxPO-perPF)) OF INTEGER (0..17919)

} OPTIONAL — Cond OtherBWP

]]

}

PDCCH-ConfigCommon field descriptions

commonControlResourceSet

An additional common control resource set which may be configured and used for any common or UE-specific search space. If the network configures this field, it uses a ControlResourceSetId other than 0 for this ControlResourceSet. The network configures the commonControlResourceSet in SIB1 so that it is contained in the bandwidth of CORESET#0.

commonSearchSpaceList

A list of additional common search spaces. If the network configures this field, it uses the SearchSpaceIds other than 0. If the field is included, it replaces any previous list, i.e. all the entries of the list are replaced and each of the SearchSpace entries is considered to be newly created and the conditions and Need codes for setup of the entry apply.

controlResourceSetZero

Parameters of the common CORESET#0 which can be used in any common or UE-specific search spaces. The values are interpreted like the corresponding bits in MIB pdcch-ConfigSIB1. Even though this field is only configured in the initial BWP (BWP#0) controlResourceSetZero can be used in search spaces configured in other DL BWP(s) than the initial DL BWP if the conditions defined in TS 38.213 [13], clause 10 are satisfied.

firstPDCCH-MonitoringOccasionOfPO

Indicates the first PDCCH monitoring occasion of each PO of the PF on this BWP, see TS 38.304 [20].

pagingSearchSpace

ID of the Search space for paging (see TS 38.213 [13], clause 10.1). If the field is absent, the UE does not receive paging in this BWP (see TS 38.213 [13], clause 10).

ra-SearchSpace

ID of the Search space for random access procedure (see TS 38.213 [13], clause 10.1). If the field is absent, the UE does not receive RAR in this BWP. This field is mandatory present in the DL BWP(s) if the conditions described in TS 38.321 [3], subclause 5.15 are met.

searchSpaceOtherSystemInformation

ID of the Search space for other system information, i.e., SIB2 and beyond (see TS 38.213 [13], clause 10.1) If the field is absent, the UE does not receive other system information in this BWP.

searchSpaceSIB1

ID of the search space for SIB1 message. In the initial DL BWP of the UE′s PCell, the network sets this field to 0. If the field is absent, the UE does not receive SIB1 in this BWP. (see TS 38.213 [13], clause 10)

searchSpaceZero

Parameters of the common SearchSpace#0. The values are interpreted like the corresponding bits in MIB pdcch-ConfigSIB1. Even though this field is only configured in the initial BWP (BWP#0), searchSpaceZero can be used in search spaces configured in other DL BWP(s) than the initial DL BWP if the conditions described in TS 38.213 [13], clause 10, are satisfied.

UplinkConfigCommon

The IE UplinkConfigCommon provides common uplink parameters of a cell.

UplinkConfigCommon ::= SEQUENCE {

frequencyInfoUL FrequencyInfoUL OPTIONAL, — Cond InterFreqHOAndServCellAdd

initialUplinkBWP BWP-UplinkCommon OPTIONAL, — Cond ServCellAdd

dummy TimeAlignmentTimer

}

UplinkConfigCommon field descriptions

frequencyInfoUL

Absolute uplink frequency configuration and subcarrier specific virtual carriers.

initialUplinkBWP

The initial uplink BWP configuration for a SpCell (PCell of MCG or SCG) and SCell (see TS 38.213 [13], clause 12).

UplinkConfigCommonSIB

The IE UplinkConfigCommonSIB provides common uplink parameters of a cell.

UplinkConfigCommonSIB information element

UplinkConfigCommonSIB ::= SEQUENCE {

frequencyInfoUL FrequencyInfoUL-SIB,

initialUplinkBWP BWP-UplinkCommon,

timeAlignmentTimerCommon TimeAlignmentTimer

}

UplinkConfigCommonSIB field descriptions

frequencyInfoUL

Absolute uplink frequency configuration and subcarrier specific virtual carriers.

InitialUplinkBWP

The initial uplink BWP configuration for a SpCell (PCell of MCG or SCG) (see TS 38.213 [13], clause 12).

FrequencyInfoUL-SIB

The IE FrequencyInfoUL-SIB provides basic parameters of an uplink carrier and transmission

FrequencyInfoUL-SIB information element

FrequencyInfoUL-SIB ::= SEQUENCE {

frequencyBandList MultiFrequencyBandListNR-SIB OPTIONAL, — Cond FDD-OrSUL

absoluteFrequencyPointA ARFCN-ValueNR OPTIONAL, — Cond FDD-OrSUL

scs-SpecificCarrierList SEQUENCE (SIZE (1..maxSCSs)) OF SCS-SpecificCarrier,

p-Max P-Max OPTIONAL, — Need S

frequencyShift7p5khz ENUMERATED {true} OPTIONAL, — Cond FDD-TDD-OrSUL-Optional

…

}

FrequencyInfoUL-SIB field descriptions

absoluteFrequencyPointA

Absolute frequency of the reference resource block (Common RB 0). Its lowest subcarrier is also known as Point A. Note that the lower edge of the actual carrier is not defined by this field but rather in the scs-SpecificCarrierList (see TS 38.211 [16], clause 4.4.4.2).

frequencyBandList

Provides the frequency band indicator and a list of additionalPmax and additionalSpectrumEmission values as defined in TS 38.101-1 [15], table 6.2.3.1-1, and TS 38.101-2 [39], table 6.2.3.1-2. The UE shall apply the first listed band which it supports in the frequencyBandList field.

frequencyShift7p5khz

Enable the NR UL transmission with a 7.5 kHz shift to the LTE raster. If the field is absent, the frequency shift is disabled.

p-Max

Value in dBm applicable for the cell. If absent the UE applies the maximum power according to TS 38.101-1 [15].

scs-SpecificCarrierList

Conditional Presence	Explanation
FDD-OrSUL	The field is mandatory present if this FrequencyInfoUL-SIB is for the paired UL for a DL (defined in a FrequencyInfoDL-SIB) or if this FrequencyInfoUL-SIB is for a supplementary uplink (SUL). It is absent otherwise (if this FrequencyInfoUL-SIB is for an unpaired UL (TDD).
FDD-TDD-OrSUL-Optional	The field is optionally present, Need R, if this FrequencyInfoUL-SIB is for the paired UL for a DL (defined in a FrequencyInfoDL-SIB), or if this FrequencyInfoUL-SIB is for an unpaired UL (TDD) in certain bands (as defined in clause 5.4.2.1 of TS 38.101-1 and in clause 5.4.2.1 of TS 38.104 [12]), or if this FrequencyInfoUL-SIB is for a supplementary uplink (SUL). It is absent otherwise.

BWP-UplinkCommon

The IE BWP-UplinkCommon is used to configure the common parameters of an uplink BWP. They are “cell specific” and the network ensures the necessary alignment with corresponding parameters of other UEs. The common parameters of the initial bandwidth part of the PCell are also provided via system information. For all other serving cells, the network provides the common parameters via dedicated signalling.

BWP-UplinkCommon information element

BWP-UplinkCommon ::= SEQUENCE {

genericParameters BWP,

rach-ConfigCommon SetupRelease { RACH-ConfigCommon } OPTIONAL, — Need M

pusch-ConfigCommon SetupRelease { PUSCH-ConfigCommon } OPTIONAL, — Need M

pucch-ConfigCommon SetupRelease { PUCCH-ConfigCommon } OPTIONAL, — Need M

…

}

BWP-UplinkCommon field descriptions

pucch-ConfigCommon

Cell specific parameters for the PUCCH of this BWP.

pusch-ConfigCommon

Cell specific parameters for the PUSCH of this BWP.

rach-ConfigCommon

Configuration of cell specific random access parameters which the UE uses for contention based and contention free random access as well as for contention based beam failure recovery in this BWP. The NW configures SSB-based RA (and hence RACH-ConfigCommon) only for UL BWPs if the linked DL BWPs (same bwp-Id as UL-BWP) are the initial DL BWPs or DL BWPs containing the SSB associated to the initial DL BWP. The network configures rach-ConfigCommon, whenever it configures contention free random access (for reconfiguration with sync or for beam failure recovery).