7.2.1 Aperiodic CSI Reporting using PUSCH

36.2133GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Physical layer proceduresRelease 17TS

The term "UL/DL configuration" in this Clause refers to the higher layer parameter subframeAssignment unless specified otherwise.

A non-BL/CE UE shall perform aperiodic CSI reporting using the PUSCH in subframe/slot/subslot n+k on serving cell , upon decoding in subframe/slot/subslot n either:

– an uplink DCI format [4], or

– a Random Access Response Grant,

for serving cell if the respective CSI request field is set to trigger a report and is not reserved. If the CSI request field from an uplink DCI format 7-0A/7-0B is set to trigger a report, the reported CSI shall be according to the transmission mode configured by higher layers for the subframe where the trigger was received. The UE is not expected to receive a CSI request field set to trigger a report in a DCI indicating a PUSCH transmission in UpPTS.

For a serving cell that is a LAA SCell, aperiodic CSI reporting using the PUSCH in subframe n+k is conditioned on if the UE is allowed to transmit in the subframe according to the channel access procedures described in clause 4.2.1 of [13].

For a serving cell that is a LAA SCell, a UE configured with Partial PUSCH mode 1 is not expected to receive an aperiodic CSI report request triggering a CSI report without UL-SCH.

A BL/CE UE shall perform aperiodic CSI reporting using the PUSCH upon decoding either:

– an uplink DCI format [4], or

– a Random Access Response Grant,

for serving cell if the respective CSI request field is set to trigger a report and is not reserved. The subframe(s) in which the PUSCH carrying the corresponding aperiodic CSI reporting triggered by an UL DCI format is transmitted is determined according to Clause 8.0.

If the CSI request field is 1 bit and the UE is configured in transmission mode 1-9 and the UE is not configured with csi-SubframePatternConfig-r12 for any serving cell, a report is triggered for serving cell , if the CSI request field is set to ‘1’. If the UE is configured with higher layer parameter eMIMO-Type2 for the aperiodic CSI on the serving cell , the report is for a higher layer configured eMIMO type of the aperiodic CSI configured for the UE on the serving cell . If the UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to ‘1’ for the serving cell , the report is for the activated CSI-RS resource for the serving cell .

If the CSI request field is 1 bit and the UE is configured in transmission mode 10 and the UE is not configured with csi-SubframePatternConfig-r12 for any serving cell, a report is triggered for a set of CSI process(es) for serving cell corresponding to the higher layer configured set of CSI process(es) associated with the value of CSI request field of ’01’ in Table 7.2.1-1B, if the CSI request field is set to ‘1’. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field of ’01’ for the CSI process. If the UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to ‘1’ for a CSI process of the triggered set of CSI process(es), the report is for the activated CSI-RS resource for the CSI process.

If the CSI request field size is 2 bits and the UE is configured in transmission mode 1-9 for all serving cells and the UE is not configured with csi-SubframePatternConfig-r12 for any serving cell, a report is triggered according to the value in Table 7.2.1-1A corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 for the aperiodic CSI on a serving cell of the triggered set of serving cells, the report is for a higher layer configured eMIMO type associated with the value of CSI request field of the aperiodic CSI configured for the UE on the serving cell. If the UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to ‘1’ for a serving cell of the triggered set of serving cells, the report is for the activated CSI-RS resource for the serving cell.

If the CSI request field size is 2 bits and the UE is configured in transmission mode 10 for at least one serving cell and the UE is not configured with csi-SubframePatternConfig-r12 for any serving cell, a report is triggered according to the value in Table 7.2.1-1B corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field for the CSI process. If the UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to ‘1’ for a serving cell of the triggered set of serving cells, the report is for the activated CSI-RS resource for the serving cell.

If the CSI request field is 1 bit and the UE is configured with the higher layer parameter csi-SubframePatternConfig-r12 for at least one serving cell, a report is triggered for a set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) for serving cell corresponding to the higher layer configured set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) associated with the value of CSI request field of ’01’ in Table 7.2.1-1C, if the CSI request field is set to ‘1’. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es) for serving cell , the report is for a higher layer configured eMIMO type associated with the value of CSI request field of ’01’ for the CSI process for serving cell . If the UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to ‘1’ for a CSI process of the triggered set of CSI process(es), the report is for the activated CSI-RS resource for the CSI process for the serving cell .

If the CSI request field size is 2 bits and the UE is configured with the higher layer parameter csi-SubframePatternConfig-r12 for at least one serving cell, a report is triggered according to the value in Table 7.2.1-1C corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field for the CSI process. If the UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to ‘1’ for a CSI process of the triggered set of CSI process(es), the report is for the activated CSI-RS resource for the CSI process.

If the CSI request field size is 3 bits and the UE is not configured with the higher layer parameter csi-SubframePatternConfig-r12 for any serving cell, and UE is not configured with higher layer parameter csi-RS-ConfigNZP-ApList or UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to ‘1’ for each CSI process, a report is triggered according to the value in Table 7.2.1-1D corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field for the CSI process. If the UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to ‘1’ for a CSI process of the triggered set of CSI process(es), the report is for the activated CSI-RS resource for the CSI process.

If the CSI request field size is 3 bits and the UE is configured with the higher layer parameter csi-SubframePatternConfig-r12 for at least one serving cell, and UE is not configured with higher layer parameter csi-RS-ConfigNZP-ApList or UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to ‘1’ for each CSI process, a report is triggered according to the value in Table 7.2.1-1E corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field for the CSI process. If the UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to ‘1’ for a CSI process of the triggered set of CSI process(es), the report is for the activated CSI-RS resource for the CSI process.

If the CSI request field size is 3 bits and the UE is not configured with the higher layer parameter csi-SubframePatternConfig-r12 for any serving cell, and UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to more than ‘1’ for at least one CSI process, a report is triggered for serving cell according to the value in Table 7.2.1-1F corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field for the CSI process for serving cell .

If the CSI request field size is 3 bits and the UE is configured with the higher layer parameter csi-SubframePatternConfig-r12 for at least one serving cell, and UE is configured with csi-RS-ConfigNZP-ApList and the number of activated CSI-RS resources given by the higher layer parameter numberActivatedAperiodicCSI-RS-Resources is set to more than ‘1’ for at least one CSI process, a report is triggered for serving cell according to the value in Table 7.2.1-1G corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field for the CSI process for serving cell .

If the CSI request field size is 4 bits and the UE is not configured with the higher layer parameter csi-SubframePatternConfig-r12 for any serving cell, a report is triggered according to the value in Table 7.2.1-1H corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field for the CSI process.

If the CSI request field size is 4 bits and the UE is configured with the higher layer parameter csi-SubframePatternConfig-r12 for at least one serving cell, a report is triggered according to the value in Table 7.2.1-1I corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field for the CSI process.

If the CSI request field size is 5 bits and the UE is not configured with the higher layer parameter csi-SubframePatternConfig-r12 for any serving cell, a report is triggered according to the value in Table 7.2.1-1J corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field for the CSI process.

If the CSI request field size is 5 bits and the UE is configured with the higher layer parameter csi-SubframePatternConfig-r12 for at least one serving cell, a report is triggered according to the value in Table 7.2.1-1K corresponding to aperiodic CSI reporting. If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process of the triggered set of CSI process(es), the report is for a higher layer configured eMIMO type associated with the value of CSI request field for the CSI process.

If the UE is configured with higher layer parameter csi-RS-ConfigNZP-ApList for a CSI process of the triggered set of CSI process(es), the UE shall assume the CSI-RS resource associated with the value of CSI request field for the CSI process is present in subframe n.

For a given serving cell, if the UE is configured in transmission modes 1-9, the "CSI process" in Table 7.2.1-1B, Table 7.2.1-1C, Table 7.2.1-1D, and Table 7.2.1-1E refers to the aperiodic CSI configured for the UE on the given serving cell. A UE is not expected to be configured by higher layers with more than 5 CSI processes in each of the 1st and 2nd set of CSI process(es) in Table 7.2.1-1B. A UE is not expected to be configured by higher layers with more than 5 CSI processes and/or {CSI process, CSI subframe set}-pair(s) in each of the 1st and 2nd set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) in Table 7.2.1-1C. A UE is not expected to be configured by higher layers with more than one instance of the same CSI process in each of the higher layer configured sets associated with the value of CSI request field of ’01’, ’10’, and ’11’ in Table 7.2.1-1B and Table 7.2.1-1C respectively. A UE is not expected to be configured by higher layers with more than 32 CSI processes in each of the 1st to 6th set of CSI process(es) in Table 7.2.1-1D. A UE is not expected to be configured by higher layers with more than 32 CSI processes and/or {CSI process, CSI subframe set}-pair(s) in each of the 1st to 6th set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) in Table 7.2.1-1E. A UE is not expected to be configured by higher layers with more than one instance of the same CSI process in each of the higher layer configured sets associated with the value of CSI request field of ‘001’, ‘010’, ‘011’, ‘100’, ‘101’, ‘110’ and ‘111’ in Table 7.2.1-1D, Table 7.2.1-1E, Table 7.2.1-1F, and Table 7.2.1-1G respectively. A UE is not expected to be configured by higher layers with more than 32 of {CSI process, CSI-RS resource} in each of the 1st to 7th set of {CSI process, CSI-RS resource} in Table 7.2.1-1F. A UE is not expected to be configured by higher layers with more than 32 {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} in each of the 1st to 7th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} in Table 7.2.1-1G. A UE is not expected to be configured by higher layers with more than 32 of {CSI process, CSI-RS resource} in each of the 1st to 14th set of {CSI process, CSI-RS resource} in Table 7.2.1-1H. A UE is not expected to be configured by higher layers with more than 32 {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} in each of the 1st to 14th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} in Table 7.2.1-1I. A UE is not expected to be configured by higher layers with more than one instance of the same CSI process in each of the higher layer configured sets associated with the value of CSI request field of ‘0001’, ‘0010’, ‘0011’, ‘0100’, ‘0101’, ‘0110’, ‘0111’, ‘1000’, ‘1001’, ‘1010’, ‘1011’, ‘1100’, ‘1101’, ‘1110’, ‘1111’ in Table 7.2.1-1H, and Table 7.2.1-1I respectively. A UE is not expected to be configured by higher layers with more than 32 of {CSI process, CSI-RS resource} in each of the 1st to 30th set of {CSI process, CSI-RS resource} in Table 7.2.1-1J. A UE is not expected to be configured by higher layers with more than 32 {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} in each of the 1st to 30th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} in Table 7.2.1-1K. A UE is not expected to be configured by higher layers with more than one instance of the same CSI process in each of the higher layer configured sets associated with the value of CSI request field of ‘00001’, ‘00010’, ‘00011’, ‘00100’, ‘00101’, ‘00110’, ‘00111’, ‘01000’, ‘01001’, ‘01010’, ‘01011’, ‘01100’, ‘01101’, ‘01110’, ‘01111’ , ‘10000’, ‘10001’, ‘10010’, ‘10011’, ‘10100’, ‘10101’, ‘10110’, ‘10111’, ‘11000’, ‘11001’, ‘11010’, ‘11011’, ‘11100’, ‘11101’, ‘11110’, ‘11111’ in Table 7.2.1-1J, and Table 7.2.1-1K respectively.

A UE is not expected to receive more than one aperiodic CSI report request for a given subframe triggered by uplink DCI formats other than 7-0A/7-0B.

A UE is not expected to update CSI corresponding to the CSI reference resource (defined in Clause 7.2.3) for all CSI report requests triggered by uplink DCI format 7-0A/7-0B except CSI report requests when the UE has unreported aperiodic CSI requests, where a CSI request shall only be counted as unreported in a slot/subslot before the slot/subslot where the PUSCH carrying the corresponding CSI is transmitted, and is the maximum number of CSI requests triggered by uplink DCI format 7-0A/7-0B supported by the UE.

If a UE is configured with higher layer parameter eMIMO-Type for a CSI process, the UE is not expected to receive an aperiodic CSI report request for a given slot/subslot triggering a CSI report for the CSI process.

If a UE is configured with higher layer parameter eMIMO-Type and eMIMO-Type2 for a CSI process, and eMIMO-Type is set to ‘CLASS A’, and eMIMO-Type2 is set to ‘CLASS B’ with one CSI-RS resource configured, the UE on reception of an aperiodic CSI report request triggering a CSI report for eMIMO-Type2 of the CSI process is not expected to update CSI for eMIMO-Type2 (nCQI_ref -1) (defined in Clause 7.2.3) subframes before or (nCQI_ref –1) subframes after the subframe comprising the non-zero power CSI-RS (defined in [3]) within the CSI-RS resource associated with eMIMO-Type of the CSI process.

If a UE is configured with more than one CSI process for a serving cell, the UE on reception of an aperiodic CSI report request triggering a CSI report according to Table 7.2.1-1B is not expected to update CSI corresponding to the CSI reference resource (defined in Clause 7.2.3) for all CSI processes except the lowest-indexed CSI processes for the serving cell associated with the request when the UE has unreported CSI processes associated with other aperiodic CSI requests for the serving cell, where a CSI process associated with a CSI request shall only be counted as unreported in a subframe/slot/subslot before the subframe/slot/subslot where the PUSCH carrying the corresponding CSI is transmitted, and is the maximum number of CSI processes supported by the UE for the serving cell corresponding to subframe/slot/subslot-PUSCH, and:

– for FDD serving cell ;

– for TDD serving cell

– if the UE is configured with four CSI processes for the serving cell ,

– if the UE is configured with two or three CSI processes for the serving cell, .

If more than one value of is included in the UE-EUTRA-Capability, the UE assumes a value of that is consistent with its CSI process configuration. If more than one consistent value of exists, the UE may assume any one of the consistent values.

If a UE is configured with multiple cell groups, and if the UE receives multiple aperiodic CSI report requests in a subframe for different cell groups triggering more than one CSI report, the UE is not required to update CSI for more than 5 CSI processes from the CSI processes corresponding to all the triggered CSI reports.

If a UE is configured with a PUCCH-SCell, and if the UE receives multiple aperiodic CSI report requests in a subframe for both the primary PUCCH group and the secondary PUCCH group triggering more than one CSI report, the UE is not required to update CSI for more than 5 CSI processes from the CSI processes corresponding to all the triggered CSI reports, in case the total number of serving cells in the primary and secondary PUCCH group is no more than 5. If a UE is configured with more than 5 serving cells, and if the UE receives aperiodic CSI report request in a subframe triggering more than CSI reports, the UE is not required to update CSI for more than CSI processes from the CSI processes corresponding to all the triggered CSI reports, where the value of is given by nMaxProc-r14 if csi-RS-ConfigNZP-ApList is configured for at least one CSI process for which aperiodic CSI report is requested, otherwise, by maxNumberUpdatedCSI-Proc-r13.

Table 7.2.1-1A: CSI Request field for PDCCH/EPDCCH/SPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

’00’

No aperiodic CSI report is triggered

’01’

Aperiodic CSI report is triggered for serving cell

’10’

Aperiodic CSI report is triggered for a 1st set of serving cells configured by higher layers

’11’

Aperiodic CSI report is triggered for a 2nd set of serving cells configured by higher layers

Table 7.2.1-1B: CSI Request field for PDCCH/EPDCCH/SPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

’00’

No aperiodic CSI report is triggered

’01’

Aperiodic CSI report is triggered for a set of CSI process(es) configured by higher layers for serving cell

’10’

Aperiodic CSI report is triggered for a 1st set of CSI process(es) configured by higher layers

’11’

Aperiodic CSI report is triggered for a 2nd set of CSI process(es) configured by higher layers

Table 7.2.1-1C: CSI Request field for PDCCH/EPDCCH/MPDCCH/SPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

’00’

No aperiodic CSI report is triggered

’01’

Aperiodic CSI report is triggered for a set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) configured by higher layers for serving cell

’10’

Aperiodic CSI report is triggered for a 1st set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) configured by higher layers

’11’

Aperiodic CSI report is triggered for a 2nd set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) configured by higher layers

Table 7.2.1-1D: CSI Request field for PDCCH/EPDCCH/SPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

‘000’

No aperiodic CSI report is triggered

‘001’

Aperiodic CSI report is triggered for a set of CSI process(es) configured by higher layers for serving cell

‘010’

Aperiodic CSI report is triggered for a 1st set of CSI process(es) configured by higher layers

‘011’

Aperiodic CSI report is triggered for a 2nd set of CSI process(es) configured by higher layers

‘100’

Aperiodic CSI report is triggered for a 3rd set of CSI process(es) configured by higher layers

‘101’

Aperiodic CSI report is triggered for a 4th set of CSI process(es) configured by higher layers

‘110’

Aperiodic CSI report is triggered for a 5th set of CSI process(es) configured by higher layers

‘111’

Aperiodic CSI report is triggered for a 6th set of CSI process(es) configured by higher layers

Table 7.2.1-1E: CSI Request field for PDCCH/EPDCCH/SPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

‘000’

No aperiodic CSI report is triggered

‘001’

Aperiodic CSI report is triggered for a set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) configured by higher layers for serving cell

‘010’

Aperiodic CSI report is triggered for a 1st set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) configured by higher layers

‘011’

Aperiodic CSI report is triggered for a 2nd set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) configured by higher layers

‘100’

Aperiodic CSI report is triggered for a 3rd set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) configured by higher layers

‘101’

Aperiodic CSI report is triggered for a 4th set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) configured by higher layers

‘110’

Aperiodic CSI report is triggered for a 5th set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) configured by higher layers

‘111’

Aperiodic CSI report is triggered for a 6th set of CSI process(es) and/or {CSI process, CSI subframe set}-pair(s) configured by higher layers

Table 7.2.1-1F: CSI Request field for PDCCH/EPDCCH/SPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

‘000’

No aperiodic CSI report is triggered

‘001’

Aperiodic CSI report is triggered for a 1st set of {CSI process, CSI-RS resource} configured by higher layers for serving cell

‘010’

Aperiodic CSI report is triggered for a 2nd set of {CSI process, CSI-RS resource} configured by higher layers for serving cell

‘011’

Aperiodic CSI report is triggered for a 3rd set of {CSI process, CSI-RS resource} configured by higher layers for serving cell

‘100’

Aperiodic CSI report is triggered for a 4th set of {CSI process, CSI-RS resource} configured by higher layers for serving cell

‘101’

Aperiodic CSI report is triggered for a 5th set of {CSI process, CSI-RS resource} configured by higher layers for serving cell

‘110’

Aperiodic CSI report is triggered for a 6th set of {CSI process, CSI-RS resource} configured by higher layers for serving cell

‘111’

Aperiodic CSI report is triggered for a 7th set of {CSI process, CSI-RS resource} configured by higher layers for serving cell

Table 7.2.1-1G: CSI Request field for PDCCH/EPDCCH/SPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

‘000’

No aperiodic CSI report is triggered

‘001’

Aperiodic CSI report is triggered for a 1st set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers for serving cell

‘010’

Aperiodic CSI report is triggered for a 2nd set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers for serving cell

‘011’

Aperiodic CSI report is triggered for a 3rd set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers for serving cell

‘100’

Aperiodic CSI report is triggered for a 4th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers for serving cell

‘101’

Aperiodic CSI report is triggered for a 5th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers for serving cell

‘110’

Aperiodic CSI report is triggered for a 6th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers for serving cell

‘111’

Aperiodic CSI report is triggered for a 7th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers for serving cell

Table 7.2.1-1H: CSI Request field for PDCCH/EPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

‘0000’

No aperiodic CSI report is triggered

‘0001’

Aperiodic CSI report is triggered for a set of {CSI process, CSI-RS resource} configured by higher layers for serving cell

‘0010’

Aperiodic CSI report is triggered for a 1st set of {CSI process, CSI-RS resource} configured by higher layers

‘0011’

Aperiodic CSI report is triggered for a 2nd set of {CSI process, CSI-RS resource} configured by higher layers

‘0100’

Aperiodic CSI report is triggered for a 3rd set of {CSI process, CSI-RS resource} configured by higher layers

‘0101’

Aperiodic CSI report is triggered for a 4th set of {CSI process, CSI-RS resource} configured by higher layers

‘0110’

Aperiodic CSI report is triggered for a 5th set of {CSI process, CSI-RS resource} configured by higher layers

‘0111’

Aperiodic CSI report is triggered for a 6th set of {CSI process, CSI-RS resource} configured by higher layers

‘1000’

Aperiodic CSI report is triggered for a 7th set of {CSI process, CSI-RS resource} configured by higher layers

‘1001’

Aperiodic CSI report is triggered for a 8th set of {CSI process, CSI-RS resource} configured by higher layers

‘1010’

Aperiodic CSI report is triggered for a 9th set of {CSI process, CSI-RS resource} configured by higher layers

‘1011’

Aperiodic CSI report is triggered for a 10th set of {CSI process, CSI-RS resource} configured by higher layers

‘1100’

Aperiodic CSI report is triggered for a 11th set of {CSI process, CSI-RS resource} configured by higher layers

‘1101’

Aperiodic CSI report is triggered for a 12th set of {CSI process, CSI-RS resource} configured by higher layers

‘1110’

Aperiodic CSI report is triggered for a 13th set of {CSI process, CSI-RS resource} configured by higher layers

‘1111’

Aperiodic CSI report is triggered for a 14th set of {CSI process, CSI-RS resource} configured by higher layers

Table 7.2.1-1I: CSI Request field for PDCCH/EPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

‘0000’

No aperiodic CSI report is triggered

‘0001’

Aperiodic CSI report is triggered for a set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers for serving cell

‘0010’

Aperiodic CSI report is triggered for a 1st set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘0011’

Aperiodic CSI report is triggered for a 2nd set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘0100’

Aperiodic CSI report is triggered for a 3rd set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘0101’

Aperiodic CSI report is triggered for a 4th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘0110’

Aperiodic CSI report is triggered for a 5th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘0111’

Aperiodic CSI report is triggered for a 6th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘1000’

Aperiodic CSI report is triggered for a 7th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘1001’

Aperiodic CSI report is triggered for a 8th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘1010’

Aperiodic CSI report is triggered for a 9th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘1011’

Aperiodic CSI report is triggered for a 10th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘1100’

Aperiodic CSI report is triggered for a 11th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘1101’

Aperiodic CSI report is triggered for a 12th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘1110’

Aperiodic CSI report is triggered for a 13th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘1111’

Aperiodic CSI report is triggered for a 14th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

Table 7.2.1-1J: CSI Request field for PDCCH/EPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

‘00000’

No aperiodic CSI report is triggered

‘00001’

Aperiodic CSI report is triggered for a set of {CSI process, CSI-RS resource} configured by higher layers for serving cell

‘00010’

Aperiodic CSI report is triggered for a 1st set of {CSI process, CSI-RS resource} configured by higher layers

‘00011’

Aperiodic CSI report is triggered for a 2nd set of {CSI process, CSI-RS resource} configured by higher layers

‘00100’

Aperiodic CSI report is triggered for a 3rd set of {CSI process, CSI-RS resource} configured by higher layers

‘00101’

Aperiodic CSI report is triggered for a 4th set of {CSI process, CSI-RS resource} configured by higher layers

‘00110’

Aperiodic CSI report is triggered for a 5th set of {CSI process, CSI-RS resource} configured by higher layers

‘00111’

Aperiodic CSI report is triggered for a 6th set of {CSI process, CSI-RS resource} configured by higher layers

‘01000’

Aperiodic CSI report is triggered for a 7th set of {CSI process, CSI-RS resource} configured by higher layers

‘01001’

Aperiodic CSI report is triggered for a 8th set of {CSI process, CSI-RS resource} configured by higher layers

‘01010’

Aperiodic CSI report is triggered for a 9th set of {CSI process, CSI-RS resource} configured by higher layers

‘01011’

Aperiodic CSI report is triggered for a 10th set of {CSI process, CSI-RS resource} configured by higher layers

‘01100’

Aperiodic CSI report is triggered for a 11th set of {CSI process, CSI-RS resource} configured by higher layers

‘01101’

Aperiodic CSI report is triggered for a 12th set of {CSI process, CSI-RS resource} configured by higher layers

‘01110’

Aperiodic CSI report is triggered for a 13th set of {CSI process, CSI-RS resource} configured by higher layers

‘01111’

Aperiodic CSI report is triggered for a 14th set of {CSI process, CSI-RS resource} configured by higher layers

‘10000’

Aperiodic CSI report is triggered for a 15th set of {CSI process, CSI-RS resource} configured by higher layers

‘10001’

Aperiodic CSI report is triggered for a 16th set of {CSI process, CSI-RS resource} configured by higher layers

‘10010’

Aperiodic CSI report is triggered for a 17th set of {CSI process, CSI-RS resource} configured by higher layers

‘10011’

Aperiodic CSI report is triggered for a 18th set of {CSI process, CSI-RS resource} configured by higher layers

‘10100’

Aperiodic CSI report is triggered for a 19th set of {CSI process, CSI-RS resource} configured by higher layers

‘10101’

Aperiodic CSI report is triggered for a 20th set of {CSI process, CSI-RS resource} configured by higher layers

‘10110’

Aperiodic CSI report is triggered for a 21st set of {CSI process, CSI-RS resource} configured by higher layers

‘10111’

Aperiodic CSI report is triggered for a 22nd set of {CSI process, CSI-RS resource} configured by higher layers

‘11000’

Aperiodic CSI report is triggered for a 23rd set of {CSI process, CSI-RS resource} configured by higher layers

‘11001’

Aperiodic CSI report is triggered for a 24th set of {CSI process, CSI-RS resource} configured by higher layers

‘11010’

Aperiodic CSI report is triggered for a 25th set of {CSI process, CSI-RS resource} configured by higher layers

‘11011’

Aperiodic CSI report is triggered for a 26th set of {CSI process, CSI-RS resource} configured by higher layers

‘11100’

Aperiodic CSI report is triggered for a 27th set of {CSI process, CSI-RS resource} configured by higher layers

‘11101’

Aperiodic CSI report is triggered for a 28th set of {CSI process, CSI-RS resource} configured by higher layers

‘11110’

Aperiodic CSI report is triggered for a 29th set of {CSI process, CSI-RS resource} configured by higher layers

‘11111’

Aperiodic CSI report is triggered for a 30th set of {CSI process, CSI-RS resource} configured by higher layers

Table 7.2.1-1K: CSI Request field for PDCCH/EPDCCH with uplink DCI format in UE specific search space

Value of CSI request field

Description

‘00000’

No aperiodic CSI report is triggered

‘00001’

Aperiodic CSI report is triggered for a set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers for serving cell

‘00010’

Aperiodic CSI report is triggered for a 1st set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘00011’

Aperiodic CSI report is triggered for a 2nd set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘00100’

Aperiodic CSI report is triggered for a 3rd set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘00101’

Aperiodic CSI report is triggered for a 4th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘00110’

Aperiodic CSI report is triggered for a 5th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘00111’

Aperiodic CSI report is triggered for a 6th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘01000’

Aperiodic CSI report is triggered for a 7th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘01001’

Aperiodic CSI report is triggered for a 8th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘01010’

Aperiodic CSI report is triggered for a 9th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘01011’

Aperiodic CSI report is triggered for a 10th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘01100’

Aperiodic CSI report is triggered for a 11th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘01101’

Aperiodic CSI report is triggered for a 12th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘01110’

Aperiodic CSI report is triggered for a 13th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘01111’

Aperiodic CSI report is triggered for a 14th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘10000’

Aperiodic CSI report is triggered for a 15th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘10001’

Aperiodic CSI report is triggered for a 16th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘10010’

Aperiodic CSI report is triggered for a 17th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘10011’

Aperiodic CSI report is triggered for a 18th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘10100’

Aperiodic CSI report is triggered for a 19th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘10101’

Aperiodic CSI report is triggered for a 20th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘10110’

Aperiodic CSI report is triggered for a 21st set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘10111’

Aperiodic CSI report is triggered for a 22nd set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘11000’

Aperiodic CSI report is triggered for a 23rd set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘11001’

Aperiodic CSI report is triggered for a 24th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘11010’

Aperiodic CSI report is triggered for a 25th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘11011’

Aperiodic CSI report is triggered for a 26th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘11100’

Aperiodic CSI report is triggered for a 27th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘11101’

Aperiodic CSI report is triggered for a 28th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘11110’

Aperiodic CSI report is triggered for a 29th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

‘11111’

Aperiodic CSI report is triggered for a 30th set of {CSI process, CSI-RS resource} and/or {CSI process, CSI subframe set, CSI-RS resource} configured by higher layers

NOTE: PDCCH/EPDCCH/MPDCCH/SPDCCH with DCI formats used to grant PUSCH transmissions as given by DCI format 0, DCI format 4, DCI format 6-0A and DCI format 7-0A/7-0B are herein referred to as uplink DCI format when common behaviour is addressed.

For a serving cell that is not a LAA SCell, and a non-BL/CE UE, when the CSI request field from an uplink DCI format other than 7-0A/7-0B is set to trigger a report,

– for FDD k=3 if the UE is configured with higher layer parameter shortProcessingTime, and the corresponding DCI format is mapped onto the UE-specific search space and k=4 otherwise,

– for TDD UL/DL configuration 1-6, k is given in Table 8-2,

– for TDD UL/DL configuration 0,

– if the MSB of the UL index is set to 1 and LSB of the UL index is set to 0, k is given in Table 8-2i if the UE is configured with higher layer parameter shortProcessingTime, and the corresponding DCI format is mapped onto the UE-specific search space, in Table 8-2 otherwise; or

– if MSB of the UL index is set to 0 and LSB of the UL index is set to 1, k is equal to 6 if the UE is configured with higher layer parameter shortProcessingTime, and the corresponding DCI format is mapped onto the UE-specific search, 7 otherwise; or

– if both MSB and LSB of the UL index is set to 1, k is given in Table 8-2i if the UE is configured with higher layer parameter shortProcessingTime, and the corresponding DCI format is mapped onto the UE-specific search space, in Table 8-2 otherwise.

For a serving cell , when the CSI request field from an uplink DCI format 7-0A/7-0B is set to trigger a report, for

– FDD, if the UE is configured for subslot uplink transmissions, k is determined based on higher layer configuration from , otherwise k=4.

– TDD, k is given by table 8-2m, 8-2n, 8-2p according to the corresponding special subframe configuration.

For TDD, if a UE is configured with more than one serving cell and if the UL/DL configurations of at least two serving cells are different, or if the UE is configured with the parameter EIMTA-MainConfigServCell-r12 for at least one serving cell, or for FDD-TDD and serving cell frame structure type 2, the "TDD UL/DL Configuration" given in Table 8-2 refers to the UL-reference UL/DL configuration (defined in Clause 8.0).

For a serving cell that is a LAA SCell, when the CSI request field from an uplink DCI format is set to trigger a report,

  • corresponds to the scheduled PUSCH subframe determined in Clause 8.0 if the uplink DCI format is 0A/4A,

  • corresponds to the N-th scheduled PUSCH subframe determined in Clause 8.0 if the uplink DCI format is 0B/4B and ,

  • corresponds to the (N-1)-th scheduled PUSCH subframe determined in Clause 8.0 if the uplink DCI format is 0B/4B and ,

  • value of N is determined by the number of scheduled subframes field in the corresponding DCI format 0B/4B

For a non-BL/CE UE, when the CSI request field from a Random Access Response Grant is set to trigger a report and is not reserved, k is equal to if the UL delay field in Clause 6.2 is set to zero, where is given in Clause 6.1.1. The UE shall postpone aperiodic CSI reporting to the next available UL subframe if the UL delay field is set to 1.

For a BL/CE UE, when the CSI request field from a Random Access Response Grant is set to trigger a report and is not reserved, the subframe(s) in which the corresponding aperiodic CSI reporting is transmitted is determined according to Clause 6.1.1.

The minimum reporting interval for aperiodic reporting of CQI and PMI and RI and CRI is 1 subframe. The subband size for CQI shall be the same for transmitter-receiver configurations with and without precoding.

If a UE is not configured for simultaneous PUSCH and PUCCH transmission, when aperiodic CSI report with no transport block associated as defined in Clause 8.6.2 and positive SR is transmitted in the same subframe/slot/subslot, the UE shall transmit SR, and, if applicable, HARQ-ACK, on PUCCH resources as described in Clause 10.1

A UE is semi-statically configured by higher layers to feed back CQI and PMI and corresponding RI and CRI on the same PUSCH using one of the following CSI reporting modes given in Table 7.2.1-1 and described below. For a BL/CE UE the UE shall not transmit the RI for any CSI reporting mode in Table 7.2.1-1.

If a UE is configured with higher layer parameter FeCoMPCSIEnabled for a CSI process the reported CRI value can take on values 0, 1, 2. For CRI value of 2, then 2 sets of PMI/CQI/RI are reported, one set for each of the configured CSI-RS resources. The combinations of the reported RIs are restricted to the following sets {1,1}, {1,2}, {2,1}, {2,2}, {2,3}, {3,2}, {3,3}, {3,4}, {4,3}, {4,4} where {x,y} indicates RI value of x corresponding to the first CSI-RS resource and RI value of y corresponding to the second CSI-RS resource.

If a UE is configured with higher layer parameter eMIMO-Type and eMIMO-Type2, and eMIMO-Type is set to ‘CLASS A’, and eMIMO-Type2 is set to ‘CLASS B’ with one CSI-RS resource configured, one of the following CSI reporting modes given in Table 7.2.1-1 is configured only for eMIMO-Type2 and for any CSI reporting mode in Table 7.2.1-1,

– the UE shall not transmit CQI and second precoding matrix indicator for eMIMO-Type;

– the UE shall not transmit RI for eMIMO-Type except if the maximum number of supported layers for spatial multiplexing in DL by the UE is more than 2, then UE feeds back a 1-bit RI according to Table 7.2.1-1L;

– the UE shall transmit wideband first PMI for eMIMO-Type.

If a UE is configured with higher layer parameter eMIMO-Type and eMIMO-Type2, and eMIMO-Type is set to ‘CLASS B’ with more than one CSI-RS resource configured, and eMIMO-Type2 is set to ‘CLASS B’ with one CSI-RS resource configured, one of the following CSI reporting modes given in Table 7.2.1-1 is configured only for eMIMO-Type2 and the UE shall not transmit CQI, PMI, RI for eMIMO-Type and the UE shall transmit CRI for eMIMO-Type for any CSI reporting mode in Table 7.2.1-1.

Table 7.2.1-1: CQI and PMI Feedback Types for PUSCH CSI reporting Modes

PMI Feedback Type

No PMI

Single PMI

Multiple PMI

PUSCH CQI

Feedback Type

Wideband

(wideband CQI)

Mode 1-0

Mode 1-1

Mode 1-2

UE Selected

(subband CQI)

Mode 2-0

Mode 2-2

Higher Layer-configured

(subband CQI)

Mode 3-0

Mode 3-1

Mode 3-2

Table 7.2.1-1L: Mapping of RI field to RI

Value of RI field

RI

0

1

1

3

For non-BL/CE UE and for each of the transmission modes defined in Clause 7.1, the following reporting modes are supported on PUSCH:

Transmission mode 1 : Modes 2-0, 3-0, 1-0

Transmission mode 2 : Modes 2-0, 3-0, 1-0

Transmission mode 3 : Modes 2-0, 3-0, 1-0

Transmission mode 4 : Modes 1-2, 2-2, 3-1, 3-2, 1-1

Transmission mode 5 : Mode 3-1, 1-1

Transmission mode 6 : Modes 1-2, 2-2, 3-1, 3-2, 1-1

Transmission mode 7 : Modes 2-0, 3-0, 1-0

Transmission mode 8 : Modes 1-2, 2-2, 3-1, 3-2, 1-1 if the UE is configured with PMI/RI reporting; modes 2-0, 3-0, 1-0 if the UE is configured without PMI/RI reporting

Transmission mode 9 : Modes 1-2, 2-2, 3-1, 3-2, 1-1 if the UE is configured with PMI/RI reporting and number of CSI-RS ports > 1 and the UE is not configured with higher layer parameter advancedCodebookEnabled; modes 1-2, 2-2, 3-1, 3-2 if the UE is configured with PMI/RI reporting and number of CSI-RS ports > 1 and the UE is configured with higher layer parameter advancedCodebookEnabled; modes 2-0, 3-0, 1-0 if the UE is configured without PMI/RI reporting or without PMI reporting or number of CSI-RS ports=1 or the number of CSI-RS ports in each of one or more CSI-RS resources in a CSI process is one when eMIMO-Type or eMIMO-Type2 is set to ‘CLASS B’; modes 1-1, 3-1 if the UE is configured with higher layer parameter semiOpenLoop.

Transmission mode 10 : Modes 1-2, 2-2, 3-1, 3-2, 1-1 if the UE is configured with PMI/RI reporting and number of CSI-RS ports > 1 and the UE is not configured with higher layer parameter advancedCodebookEnabled; modes 1-2, 2-2, 3-1, 3-2 if the UE is configured with PMI/RI reporting and number of CSI-RS ports > 1 and the UE is configured with higher layer parameter advancedCodebookEnabled; modes 2-0, 3-0, 1-0 if the UE is configured without PMI/RI reporting or without PMI reporting or number of CSI-RS ports=1 or the number of CSI-RS ports in each of one or more CSI-RS resources in a CSI process is one when eMIMO-Type or eMIMO-Type2 is set to ‘CLASS B’; modes 1-1, 3-1 if the UE configured with higher layer parameter semiOpenLoop.

For a BL/CE UE configured with CEModeA, the following reporting modes are supported on PUSCH:

Transmission mode 1 : Mode 2-0

Transmission mode 2 : Mode 2-0

Transmission mode 6 : Mode 2-0

Transmission mode 9 : Mode 2-0

For Transmission mode 6 and a BL/CE UE configured with a C-RNTI, the BL/CE UE reports CQI for the closed-loop with spatial multiplexing PDSCH transmission scheme.

The aperiodic CSI reporting mode is given by the parameter cqi-ReportModeAperiodic which is configured by higher-layer signalling.

For a non-BL/CE UE, a serving cell with , PUSCH reporting modes are not supported for that serving cell.

For a non-BL/CE UE, RI is only reported for transmission modes 3 and 4, as well as transmission modes 8, 9 and 10 with PMI/RI reporting, and transmission modes 9 and 10 without PMI reporting.

For a BL/CE UE, RI is not reported.

If the UE is configured with higher layer parameter eMIMO-Type2 for a CSI process, the higher layer parameter eMIMO-Type in the rest of this Clause refers to higher layer configured eMIMO type associated with the value of CSI request field triggering aperiodic CSI reporting for the CSI process.

For serving cell , a UE configured in transmission mode 10 with PMI/RI reporting or without PMI reporting for a CSI process can be configured with a ‘RI-reference CSI process’ for the CSI process. If the UE is configured with a ‘RI-reference CSI process’ for the CSI process, the reported RI for the CSI process shall be the same as the reported RI for the configured ‘RI-reference CSI process’. The RI for the ‘RI-reference CSI process’ is not based on any other configured CSI process other than the ‘RI-reference CSI process’. The UE is not expected to receive an aperiodic CSI report request for a given subframe/slot/subslot triggering a CSI report including CSI associated with the CSI process and not including CSI associated with the configured ‘RI-reference CSI process’. If the UE is configured with a ‘RI-reference CSI process’ for a CSI process and if subframe sets and are configured by higher layers for only one of the CSI processes then the UE is not expected to receive configuration for the CSI process configured with the subframe subsets that have a different set of restricted RIs with precoder codebook subset restriction between the two subframe sets. The UE is not expected to receive configurations for the CSI process and the ‘RI-reference CSI process’ that have a different:

– Aperiodic CSI reporting mode, and/or

– number of CSI-RS antenna ports, and/or

– set of restricted RIs with precoder codebook subset restriction if subframe sets and are not configured by higher layers for both CSI processes, and/or

– set of restricted RIs with precoder codebook subset restriction for each subframe set if subframe sets and are configured by higher layers for both CSI processes, and/or

– set of restricted RIs with precoder codebook subset restriction if subframe sets and are configured by higher layers for only one of the CSI processes, and the set of restricted RIs for the two subframe sets are the same, and/or

– number of CSI-RS antenna ports for any two CSI-RS resources for the two CSI processes, if a UE is configured with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one for at least one of the two CSI processes, and/or

– set of restricted RIs with precoder codebook subset restriction for any two CSI-RS resources for the two CSI processes, if a UE is configured with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one for at least one of the two CSI processes and if subframe sets and are not configured by higher layers for both CSI processes, and/or

– set of restricted RIs with precoder codebook subset restriction for each subframe set and for any two CSI-RS resources for the two CSI processes, if a UE is configured with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one for at least one of the two CSI processes and if subframe sets and are configured by higher layers for both CSI processes, and/or

– set of restricted RIs with precoder codebook subset restriction for any two CSI-RS resources for the two CSI processes, if a UE is configured with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one for at least one of the two CSI processes and if subframe sets and are configured by higher layers for only one of the CSI processes, and the set of restricted RIs for the two subframe sets are the same.

For a non-BL/CE UE, a RI report for a serving cell on an aperiodic reporting mode is valid only for CQI/PMI report or CQI report without PMI reporting for that serving cell on that aperiodic reporting mode.

For a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with parameter eMIMO-Type configured by higher layers, except with higher layer parameter csi-RS-NZP-mode configured, and eMIMO-Type is set to ‘CLASS B’ and the number of configured CSI-RS resources is more than one, and for a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type set to ‘CLASS B’ and higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, and the total number of antenna ports across all configured CSI-RS resources is more than 15, the UE on reception of an aperiodic CSI report request triggering a CSI report in uplink subframe is not expected to update CRI corresponding to the CSI process if CRI for the CSI process has been reported and updated on or after subframe .

  • Wideband feedback
    • Mode 1-2 description:
    • For a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type, except with higher layer parameter csi-RS-NZP-mode configured, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one, and for a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type set to ‘CLASS B’ and higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
    • For each subband a preferred precoding matrix is selected from the codebook subset assuming transmission only in the subband
    • A UE shall report one wideband CQI value per codeword which is calculated assuming the use of the corresponding selected precoding matrix in each subband and transmission on set S subbands. The UE shall report the selected precoding matrix indicator for each set S subband except with
      • 8 CSI-RS ports configured for transmission modes 9 and 10 or with alternativeCodeBookEnabledFor4TX-r12=TRUE configured for transmission modes 8, 9 and 10, in which case a first precoding matrix indicator is reported for the set S subbands and a second precoding matrix indicator is reported for each set S subband, if the UE is not configured with higher layer parameter eMIMO-Type or advancedCodebookEnabled, or UE is configured in transmission mode 9 or 10 and advancedCodebookEnabled=TRUE, and reported , or UE reports CRI, or UE is configured in transmission mode 9 or 10, and with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS B’, and one CSI-RS resource configured, and except with higher layer parameter alternativeCodebookEnabledCLASSB_K1=TRUE configured.

      • UE is configured in transmission mode 9 or 10, and with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS A’, in which case a first precoding matrix indicator is reported for the set S subbands and a second precoding matrix indicator is reported for each set S subband, if the UE is not configured with higher layer parameter advancedCodebookEnabled, or UE is configured with higher layer parameter advancedCodebookEnabled=TRUE, and reported .

      • UE is configured in transmission mode 9 or 10, and with higher layer parameter advancedCodebookEnabled=TRUE, and reported , in which case a first precoding matrix indicator is reported for the set S subbands, a relative power indicator is reported for the set S subbands and a second precoding matrix indicator is reported for each set S subband.

    • Subband size is given by Table 7.2.1-3A when the CSI request field from an uplink DCI format 7-0A/7-0B is set to trigger a report, Table 7.2.1-3 otherwise.
    • For transmission modes 4, 8, 9 and 10, the reported PMI and CQI values and RPI value (if reported) are calculated conditioned on the reported RI. For other transmission modes they are reported conditioned on rank 1. If CRI is reported, the reported PMI, CQI, and RI values are calculated conditioned on the reported CRI.
    • Mode 1-1 description:
      • For a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type, except with higher layer parameter csi-RS-NZP-mode configured, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one, and for a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type set to ‘CLASS B’ and higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
      • A single precoding matrix is selected from the codebook subset assuming transmission on set S subbands
      • A UE shall report a wideband CQI value per codeword which is calculated assuming the use of the single precoding matrix in all subbands and transmission on set S subbands
      • The UE shall report the selected single precoding matrix indicator except with
        • 8 CSI-RS ports configured for transmission modes 9 and 10 or with alternativeCodeBookEnabledFor4TX-r12=TRUE configured for transmission modes 8, 9 and 10, in which case a first and second precoding matrix indicator are reported corresponding to the selected single precoding matrix, if the UE is not configured with higher layer parameter eMIMO-Type, or UE reports CRI, or UE is configured in transmission mode 9 or 10, and with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS B’, and one CSI-RS resource configured, and except with higher layer parameter alternativeCodebookEnabledCLASSB_K1=TRUE configured or when higher layer parameter semiOpenLoop is configured and RI<3, in which case a first precoding matrix indicator is reported corresponding to the selected single precoding matrix.
        • UE is configured in transmission mode 9 or 10, and with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS A’, in which case a first and second precoding matrix indicator are reported corresponding to the selected single precoding matrix, except when higher layer parameter semiOpenLoop is configured and RI<3, in which case a first precoding matrix indicator is reported corresponding to the selected single precoding matrix.
      • For transmission modes 4, 8, 9 and 10, the reported PMI and CQI values are calculated conditioned on the reported RI. For other transmission modes they are reported conditioned on rank 1. If CRI is reported, the reported PMI, CQI, and RI values are calculated conditioned on the reported CRI.
    • Mode 1-0 description:
    • If a UE is configured in transmission mode 9 or 10, and UE is configured with higher layer parameter eMIMO-Type for a CSI process, and eMIMO-Type is set to ‘CLASS B’, and the number of CSI-RS antenna ports in at least one of the one or more configured CSI-RS resource is more than one,
      • If the UE is not configured with higher layer parameter csi-RS-NZP-mode, and the number of configured CSI-RS resources is more than one, or the UE is configured with higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
      • A single precoding matrix is selected from the codebook subset assuming transmission on set S subbands
      • A UE shall report a wideband CQI value per codeword which is calculated assuming the use of the single precoding matrix in all subbands and transmission on set S subbands
      • The selected precoding matrix, and reported CQI values are calculated conditioned on the reported RI. If CRI is reported, the selected precoding matrix, reported CQI, and RI values are calculated conditioned on the reported CRI

otherwise,

      • For a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type, except with higher layer parameter csi-RS-NZP-mode configured, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one, and for a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type set to ‘CLASS B’ and higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
      • A UE shall report a wideband CQI value which is calculated assuming transmission on set S subbands
      • The wideband CQI represents channel quality for the first codeword, even when RI>1.
      • For transmission mode 3 the reported CQI value is calculated conditioned on the reported RI. For other transmission modes they are reported conditioned on rank 1. If CRI is reported, the reported CQI values are calculated conditioned on the reported CRI.
  • Higher Layer-configured subband feedback
    • Mode 3-0 description:
    • If a UE is configured in transmission mode 9 or 10, and UE is configured with higher layer parameter eMIMO-Type for a CSI process, and eMIMO-Type is set to ‘CLASS B’, and the number of CSI-RS antenna ports in at least one of the one or more configured CSI-RS resource is more than one,
      • If the UE is not configured with higher layer parameter csi-RS-NZP-mode, and the number of configured CSI-RS resources is more than one, or the UE is configured with higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
      • A single precoding matrix is selected from the codebook subset assuming transmission on set S subbands
      • A UE shall report one subband CQI value per codeword for each set S subband which are calculated assuming the use of the single precoding matrix in all subbands and assuming transmission in the corresponding subband.
      • A UE shall report a wideband CQI value per codeword which is calculated assuming the use of the single precoding matrix in all subbands and transmission on set S subbands
      • The selected precoding matrix, and reported CQI values are calculated conditioned on the reported RI. If CRI is reported, the selected precoding matrix, reported CQI, and RI values are calculated conditioned on the reported CRI

otherwise,

      • For a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type, except with higher layer parameter csi-RS-NZP-mode configured, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one, and for a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type set to ‘CLASS B’ and higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
      • A UE shall report a wideband CQI value which is calculated assuming transmission on set S subbands
      • The UE shall also report one subband CQI value for each set S subband. The subband CQI value is calculated assuming transmission only in the subband
      • Both the wideband and subband CQI represent channel quality for the first codeword, even when RI>1.
      • For transmission mode 3 the reported CQI values are calculated conditioned on the reported RI. For other transmission modes they are reported conditioned on rank 1. If CRI is reported, the reported CQI values are calculated conditioned on the reported CRI.
    • Mode 3-1 description:
      • For a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type, except with higher layer parameter csi-RS-NZP-mode configured, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one, and for a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type set to ‘CLASS B’ and higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
      • A single precoding matrix is selected from the codebook subset assuming transmission on set S subbands
      • A UE shall report one subband CQI value per codeword for each set S subband which are calculated assuming the use of the single precoding matrix in all subbands and assuming transmission in the corresponding subband.
      • A UE shall report a wideband CQI value per codeword which is calculated assuming the use of the single precoding matrix in all subbands and transmission on set S subbands
      • The UE shall report the selected single precoding matrix indicator except with,
        • 8 CSI-RS ports configured for transmission modes 9 and 10 or with alternativeCodeBookEnabledFor4TX-r12=TRUE configured for transmission modes 8, 9 and 10, in which case a first and second precoding matrix indicator are reported corresponding to the selected single precoding matrix, if the UE is not configured with higher layer parameter eMIMO-Type or advancedCodebookEnabled, or UE is configured in transmission mode 9 or 10 and advancedCodebookEnabled=TRUE, and reported , or UE reports CRI, or UE is configured in transmission mode 9 or 10, and with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS B’, and one CSI-RS resource configured, and except with higher layer parameter alternativeCodebookEnabledCLASSB_K1=TRUE configured, or when higher layer parameter semiOpenLoop is configured and RI<3, in which case a first precoding matrix indicator is reported corresponding to the selected single precoding matrix.

        • UE is configured in transmission mode 9 or 10, and with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS A’, in which case a first and second precoding matrix indicator are reported corresponding to the selected single precoding matrix if the UE is not configured with higher layer parameter advancedCodebookEnabled, or UE is configured with higher layer parameter advancedCodebookEnabled=TRUE, and reported , except when higher layer parameter semiOpenLoop is configured and RI<3, in which case a first precoding matrix indicator is reported corresponding to the selected single precoding matrix.

        • UE is configured in transmission mode 9 or 10, and with higher layer parameter advancedCodebookEnabled=TRUE, and reported , in which case a first and second precoding matrix indicator and relative power indicator are reported corresponding to the selected single precoding matrix.

      • For transmission modes 4, 8, 9 and 10, the reported PMI and CQI values and RPI value (if reported) are calculated conditioned on the reported RI. For other transmission modes they are reported conditioned on rank 1. If CRI is reported, the reported PMI, CQI, and RI values are calculated conditioned on the reported CRI.
    • Mode 3-2 description:
      • For a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type, except with higher layer parameter csi-RS-NZP-mode configured, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one, and for a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type set to ‘CLASS B’ and higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
      • For each subband a preferred precoding matrix is selected from the codebook subset assuming transmission only in the subband
      • A UE shall report one wideband CQI value per codeword which is calculated assuming the use of the corresponding selected precoding matrix in each subband and transmission on set S subbands.
      • A UE shall report the selected single precoding matrix indicator for each set S subband except with,
        • 8 CSI-RS ports configured for transmission mode 9 and 10, or with alternativeCodeBookEnabledFor4TX-r12=TRUE configured for transmission modes 8, 9 and 10, in which case the UE shall report a first precoding matrix indicator for all set S subbands and also report a second precoding matrix indicator for each set S subband, if the UE is not configured with higher layer parameter eMIMO-Type or advancedCodebookEnabled, or UE is configured in transmission mode 9 or 10 and advancedCodebookEnabled=TRUE, and reported , or UE reports CRI, or UE is configured in transmission mode 9 or 10, and with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS B’, and one CSI-RS resource configured, and except with higher layer parameter alternativeCodebookEnabledCLASSB_K1=TRUE configured.

        • UE is configured in transmission mode 9 or 10, and with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS A’, in which case a first precoding matrix indicator is reported for the set S subbands and a second precoding matrix indicator is reported for each set S subband if the UE is not configured with higher layer parameter advancedCodebookEnabled, or UE is configured with higher layer parameter advancedCodebookEnabled=TRUE, and reported .

        • UE is configured in transmission mode 9 or 10, and with higher layer parameter advancedCodebookEnabled=TRUE, and reported , in which case a first precoding matrix indicator is reported for the set S subbands, a relative power indicator is reported for the set S subbands, and a second precoding matrix indicator is reported for each set S subband.

      • A UE shall report one subband CQI value per codeword for each set S subband reflecting transmission over the single subband and using the selected precoding matrix in the corresponding subband.
      • For transmission modes 4, 8, 9 and 10, the reported PMI and CQI values and RPI value (if reported) are calculated conditioned on the reported RI. For transmission mode 6 they are reported conditioned on rank 1. If CRI is reported, the reported PMI, CQI, and RI values are calculated conditioned on the reported CRI.
    • Subband CQI value for each codeword are encoded differentially with respect to their respective wideband CQI using 2-bits as defined by
      • Subband differential CQI offset level = subband CQI index – wideband CQI index. The mapping from the 2-bit subband differential CQI value to the offset level is shown in Table 7.2.1-2.

Table 7.2.1-2: Mapping subband differential CQI value to offset level

Subband differential CQI value

Offset level

0

0

1

1

2

≥2

3

≤-1
    • Supported subband size (k) is given in Table 7.2.1-3A when the CSI request field from an uplink DCI format 7-0A/7-0B is set to trigger a report, in Table 7.2.1-3 otherwise.

Table 7.2.1-3: Subband Size (k) vs. System Bandwidth

System Bandwidth

Subband Size

(k)

6 – 7

NA

8 – 10

4

11 – 26

4

27 – 63

6

64 – 110

8

Table 7.2.1-3A: Subband Size (k) vs. System Bandwidth when the CSI request field from an uplink DCI format 7-0A/7-0B is set to trigger a report

System Bandwidth

Subband Size

(k)

6 – 7

NA

8 – 10

4

11 – 26

12

27 – 63

12

64 – 110

12
  • UE-selected subband feedback
    • Mode 2-0 description:
    • If a UE is configured in transmission mode 9 or 10, and UE is configured with higher layer parameter eMIMO-Type for a CSI process, and eMIMO-Type is set to ‘CLASS B’, and the number of CSI-RS antenna ports in at least one of the one or more configured CSI-RS resource is more than one,
      • If the UE is not configured with higher layer parameter csi-RS-NZP-mode, and the number of configured CSI-RS resources is more than one, or the UE is configured with higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
      • The UE shall perform joint selection of the set of M preferred subbands of size k within the set of subbands S and a preferred single precoding matrix selected from the codebook subset that is preferred to be used for transmission over the M selected subbands.
      • The UE shall report one CQI value per codeword reflecting transmission only over the selected M preferred subbands and using the same selected single precoding matrix in each of the M subbands.
      • A single precoding matrix is selected from the codebook subset assuming transmission on set S subbands
      • A UE shall report a wideband CQI value per codeword which is calculated assuming the use of the single precoding matrix in all subbands and transmission on set S subbands
      • The selected precoding matrix, and reported CQI values are calculated conditioned on the reported RI. If CRI is reported, the selected precoding matrix, reported CQI, and RI values are calculated conditioned on the reported CRI.
    • otherwise,
      • For a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type, except with higher layer parameter csi-RS-NZP-mode configured, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one, and for a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type set to ‘CLASS B’ and higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
      • The UE shall select a set of M preferred subbands of size k (where k and M are given in Table 7.2.1-5 for each system bandwidth range) within the set of subbands S.
      • The UE shall also report one CQI value reflecting transmission only over the M selected subbands determined in the previous step. The CQI represents channel quality for the first codeword, even when RI>1.
      • Additionally, the UE shall also report one wideband CQI value which is calculated assuming transmission on set S subbands. The wideband CQI represents channel quality for the first codeword, even when RI>1.
      • For transmission mode 3 the reported CQI values are calculated conditioned on the reported RI. For other transmission modes they are reported conditioned on rank 1. If CRI is reported, the reported CQI values are calculated conditioned on the reported CRI.
    • Mode 2-2 description:
      • For a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type, except with higher layer parameter csi-RS-NZP-mode configured, and eMIMO-Type is set to ‘CLASS B’, and the number of configured CSI-RS resources is more than one, and for a UE configured in transmission mode 9 or 10, and for a CSI process, if a UE is configured with higher layer parameter eMIMO-Type set to ‘CLASS B’ and higher layer parameter csi-RS-NZP-mode set to ‘multiShot’, and the number of activated CSI-RS resources is more than one, the UE shall report one wideband CRI which is calculated assuming transmission on set S subbands.
      • The UE shall perform joint selection of the set of M preferred subbands of size k within the set of subbands S and a preferred single precoding matrix selected from the codebook subset that is preferred to be used for transmission over the M selected subbands.
      • The UE shall report one CQI value per codeword reflecting transmission only over the selected M preferred subbands and using the same selected single precoding matrix in each of the M subbands.
      • A single precoding matrix is selected from the codebook subset assuming transmission on set S subbands
      • A UE shall report a wideband CQI value per codeword which is calculated assuming the use of the single precoding matrix in all subbands and transmission on set S subbands
      • The UE shall report the selected single precoding matrix indicator preferred for the M selected subbands and the selected single precoding matrix indicator for all set S subbands except with,
        • 8 CSI-RS ports configured for transmission modes 9 and 10 or with alternativeCodeBookEnabledFor4TX-r12=TRUE configured for transmission modes 8, 9 and 10, in which case the UE shall report a first precoding matrix indicator for all set S subbands, a second precoding matrix indicator for all set S subbands and another second precoding matrix indicator for the M selected subbands, if the UE is not configured with higher layer parameter eMIMO-Type or advancedCodebookEnabled, or UE is configured in transmission mode 9 or 10 and advancedCodebookEnabled=TRUE, and reported , or UE reports CRI, or UE is configured in transmission mode 9 or 10, and with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS B’, and one CSI-RS resource configured, and except with higher layer parameter alternativeCodebookEnabledCLASSB_K1=TRUE configured.

        • UE is configured in transmission mode 9 or 10, and with higher layer parameter eMIMO-Type, and eMIMO-Type is set to ‘CLASS A’, in which case the UE shall report a first precoding matrix indicator for all set S subbands, a second precoding matrix indicator for all set S subbands and another second precoding matrix indicator for or the M selected subbands if the UE is not configured with higher layer parameter advancedCodebookEnabled, or UE is configured with higher layer parameter advancedCodebookEnabled=TRUE, and reported .

        • UE is configured in transmission mode 9 or 10, and with higher layer parameter advancedCodebookEnabled=TRUE, and reported , in which case the UE shall report a first precoding matrix indicator for all set S subbands, a relative power indicator is reported for all set S subbands, a second precoding matrix indicator for all set S subbands and another second precoding matrix indicator for or the M selected subbands.

      • For transmission modes 4, 8, 9 and 10, the reported PMI and CQI values and RPI value (if reported) are calculated conditioned on the reported RI. For other transmission modes they are reported conditioned on rank 1. If CRI is reported, the reported PMI, CQI, and RI values are calculated conditioned on the reported CRI.
    • For all UE-selected subband feedback modes the UE shall report the positions of the M selected subbands using a combinatorial index r defined as

      • where the set , () contains the M sorted subband indices and is the extended binomial coefficient, resulting in unique label .

    • The CQI value for the M selected subbands for each codeword is encoded differentially using 2-bits relative to its respective wideband CQI as defined by
      • Differential CQI offset level = M selected subbands CQI index – wideband CQI index
      • The mapping from the 2-bit differential CQI value to the offset level is shown in Table 7.2.1-4.

Table 7.2.1-4: Mapping differential CQI value to offset level

Differential CQI value

Offset level

0

≤1

1

2

2

3

3

≥4
    • Supported subband size k and M values include those shown in Table 7.2.1-5A when the CSI request field from an uplink DCI format 7-0A/7-0B is set to trigger a report, in Table 7.2.1-5 otherwise. In Table 7.2.1-5 the k and M values are a function of system bandwidth.
    • The number of bits to denote the position of the M selected subbands is .

For a BL/CE UE, the reported CQI values are calculated conditioned on rank 1.

– UE-selected subband feedback

– Mode 2-0 description:

– The UE shall report one wideband CQI value which is calculated assuming transmission on all narrowband(s) in the CSI reference resource.

– If frequency hopping is configured for MPDCCH,

– the UE shall select M=1 preferred narrowband defined in Clause 6.2.7 of [3] within the set of narrowband(s) in which MPDCCH is monitored.

– the UE shall also report one CQI value reflecting transmission only over the selected narrowband determined in the previous step.

– The CQI value for the M=1 selected narrowband is encoded differentially using 2-bits relative to its respective wideband CQI as defined by

– Differential CQI offset level = selected narrowband CQI index – wideband CQI index

– The mapping from the 2-bit differential CQI value to the offset level is shown in Table 7.2.1-4.

– the UE shall report the positions of the M=1 selected narrowband according to Table 7.2.1-6.

– otherwise,

– the UE shall report a Differential CQI value = 0 and a position of the M=1 selected narrowband according to Table 7.2.1-6.

Table 7.2.1-5: Subband Size (k) and Number of Subbands (M) in S vs. Downlink System Bandwidth

System Bandwidth

Subband Size k (RBs)

M

6 – 7

NA

NA

8 – 10

2

1

11 – 26

2

3

27 – 63

3

5

64 – 110

4

6

Table 7.2.1-5A: Subband Size (k) and Number of Subbands (M) in S vs. Downlink System Bandwidth when the CSI request field from an uplink DCI format 7-0A/7-0B is set to trigger a report

System Bandwidth

Subband Size k (RBs)

M

6 – 7

NA

NA

8 – 11

4

1

12 – 26

12

1

27 – 63

12

2

64 – 110

12

4

Table 7.2.1-6: Reporting UE selected narrowband position for BL/CE UEs

Number of narrowbands for MPDCCH monitoring

UE reported bit(s) for narrowband position (MSB, LSB)

MPDCCH Narrowband Reported

1

0

The narrowband used for MPDCCH monitoring

2

0

Narrowband with lowest narrowband index

1

Narrowband with highest narrowband index

4

00

Narrowband with lowest narrowband index

01

Narrowband with second lowest narrowband index

10

Narrowband with third lowest narrowband index

11

Narrowband with highest narrowband index