Size determination for channel state information (CSI) part one and part two transmission of CSI report

1. An apparatus of a User Equipment (UE), the apparatus comprising: memory; and processing circuitry, configured to:

for a channel state information (CSI) report that includes a CSI part 1 transmission and is configurable to include a CSI part 2 transmission, wherein the CSI part 1 transmission is configurable to include one or more fields of a first plurality of fields, wherein the CSI part 2 transmission is configurable to include one or more fields of a second plurality of fields:

determine a first number of coded modulation symbols per layer to be used for the CSI part 1 transmission on a physical uplink shared channel (PUSCH) without uplink shared channel (UL-SCH) data, as:

a minimum of a first term and a second term if the CSI report includes the CSI part 2 transmission, and

the second term if the CSI report does not include the CSI part 2 transmission,

wherein the first term is based at least partly on a sum of a number of bits for the CSI part 1 transmission and a number of bits for a cyclic redundancy check (CRC) for the CSI part 1 transmission,

wherein the second term is based at least partly on a difference between a number of resource elements (REs) allocated for transmission of uplink control information (UCI) and a number of coded modulation symbols per layer for hybrid automatic repeat request acknowledgement (HARQ-ACK) on the PUSCH; and

encode the CSI part 1 transmission in accordance with the first number of coded modulation symbols per layer.

2. The apparatus according to claim 1 , the processing circuitry further configured to:

if the CSI report includes the CSI part 2 transmission:

determine a second number of coded modulation symbols per layer to be used for the CSI part 2 transmission on the PUSCH without the UL-SCH data, as:

a difference between the second term and the first number of coded modulation symbols per layer; and

encode the CSI part 2 transmission in accordance with the second number of coded modulation symbols per layer.

3. The apparatus according to claim 1 , the processing circuitry further configured to:

determine the first number of coded modulation symbols per layer based on a remaining number of REs, from the REs allocated for transmission of the UCI, that are not used for HARQ-ACK transmission on the PUSCH.

4. The apparatus according to claim 1 , wherein the first plurality of fields includes one or more of:

a CSI resource indicator (CRI),

a rank indicator (RI), and

a wideband channel quality indicator (CQI) for a first transport block (TB).

5. The apparatus according to claim 4 , wherein the second plurality of fields includes one or more of:

a precoding matrix indicator (PMI), and

a wideband CQI for a second TB.

6. The apparatus according to claim 1 , wherein:

the first term is based on a ceiling function applied to a product of a first sub-term and a second sub-term divided by a third sub-term,

wherein the first sub-term is based on a sum of:

the number of bits for the CSI part 1 transmission, and

a number that is equal to:

11, if the number of bits for the CSI part 1 transmission is greater than or equal to 360, or

the number of bits for the CRC for the CSI part 1 transmission, if the number of bits for the CSI part 1 transmission is less than 360,

wherein the second sub-term is based on a beta offset parameter for the PUSCH,

wherein the third sub-term is based on a product of:

a code rate for the PUSCH, and

a modulation order of the PUSCH.

7. The apparatus according to claim 6 , wherein:

the second term is based on a difference between:

a sum, for a number of symbols of the PUSCH, of a number of REs allocated for transmission of the UCI in each symbol, and

the number of coded modulation symbols per layer for the HARQ-ACK on the PUSCH.

8. The apparatus according to claim 1 , the processing circuitry further configured to:

determine the number of coded modulation symbols per layer for HARQ-ACK on the PUSCH; and

encode one or more HARQ-ACK bits for transmission on the PUSCH.

9. The apparatus according to claim 1 , the processing circuitry further configured to:

decode downlink control information (DCI) that includes an uplink grant that indicates a code rate for the PUSCH and a modulation order for the PUSCH; and

determine the first number of coded modulation symbols per layer based at least partly on the code rate for the PUSCH and the modulation order for the PUSCH.

10. The apparatus according to claim 1 , the processing circuitry further configured to:

decode control signaling from a Next Generation Node-B (gNB) that indicates which fields of the first plurality of fields and the second plurality of fields are to be sent to the gNB; and

determine that the CSI report includes the CSI part 2 transmission if the control signaling indicates that at least one of the fields of the second plurality of fields is to be sent to the gNB.

11. The apparatus according to claim 1 , the processing circuitry further configured to:

decode downlink control information (DCI); and

determine whether the UE is to transmit the CSI report on the PUSCH without the UL-SCH data based at least partly on one or more of the following, included in the DCI: a frequency domain resource assignment, a time-domain resource assignment, a modulation and coding scheme, a new data indicator, a redundancy version value, a HARQ process number, a CSI request field, a bandwidth part (BWP) indicator, a sounding reference signal (SRS) indicator, precoding information, a number of layers, and a phase-tracking reference symbol indicator.

12. The apparatus according to claim 1 , wherein the UE is arranged to operate in accordance with a new radio (NR) protocol.

13. The apparatus according to claim 1 , wherein:

the apparatus includes a transceiver to transmit the PUSCH,

the processing circuitry includes a baseband processor to encode the CSI part 1 transmission, and

the memory is configured to store at least a portion of the CSI part 1 transmission.

14. A non-transitory computer-readable storage medium that stores instructions for execution by processing circuitry of a Next Generation Node-B (gNB), the operations to configure the processing circuitry to:

encode downlink control information (DCI) that indicates that a User Equipment (UE) is to transmit a channel state information (CSI) report on a physical uplink shared channel (PUSCH) without uplink shared channel (UL-SCH) data,

wherein the CSI report includes a CSI part 1 transmission and is configurable to include a CSI part 2 transmission;

determine, a first number of coded modulation symbols per layer for the CSI part 1 transmission as:

a minimum of a first term and a second term if the CSI report includes the CSI part 2 transmission, and

the second term if the CSI report does not include the CSI part 2 transmission,

wherein the first term is based at least partly on a sum of a number of bits for the CSI part 1 transmission and a number of bits for a cyclic redundancy check (CRC) for the CSI part 1 transmission,

wherein the second term is based at least partly on a difference between a number of resource elements (REs) allocated for transmission of uplink control information (UCI) and a number of coded modulation symbols per layer for hybrid automatic repeat request acknowledgement (HARQ-ACK) on the PUSCH.

15. The non-transitory computer-readable storage medium according to claim 14 , the operations to further configure the processing circuitry to:

decode the CSI part 1 transmission in accordance with the determined first number of coded modulation symbols per layer.

16. The non-transitory computer-readable storage medium according to claim 15 , the operations to further configure the processing circuitry to:

if the CSI report includes the CSI part 2 transmission:

determine a second number of coded modulation symbols for the CSI part 2 transmission on the PUSCH when the PUSCH does not include the UL-SCH data, as:

a difference between the second term and the first number of coded modulation symbols per layer.

17. The non-transitory computer-readable storage medium according to claim 14 , wherein:

the first term is based on a ceiling function applied to a product of a first sub-term and a second sub-term divided by a third sub-term,

wherein the first sub-term is based on a sum of:

the number of bits for the CSI part 1 transmission, and

a number that is equal to:

11, if the number of bits for the CSI part 1 transmission is greater than or equal to 360, or

the number of bits for the CRC for the CSI part 1 transmission, if the number of bits for the CSI part 1 transmission is less than 360,

wherein the second sub-term is based on a beta offset parameter for the PUSCH,

wherein the third sub-term is based on a product of:

a code rate for the PUSCH, and

a modulation order of the PUSCH.

18. The non-transitory computer-readable storage medium according to claim 17 , wherein:

the second term is based on a difference between:

a sum, for a number of symbols of the PUSCH, of a number of REs allocated for transmission of the UCI in each symbol, and

the number of coded modulation symbols per layer for HARQ on the PUSCH.

19. An apparatus of a User Equipment (UE), the apparatus comprising: memory; and processing circuitry, configured to:

decode, from a Next Generation Node-B (gNB), control signaling that indicates, for a channel state information (CSI) report to be transmitted on a physical uplink shared channel (PUSCH) without uplink shared (UL-SCH) data, wherein the CSI report includes a CSI part 1 transmission and is configurable to include a CSI part 2 transmission, whether the CSI report is to include the CSI part 2 transmission;

determine a first number of coded modulation symbols per layer for the CSI part 1 transmission based at least partly on one or more of:

a sum of a number of bits for the CSI part 1 transmission and a number of bits for a cyclic redundancy check (CRC) for the CSI part 1 transmission, and

a difference between a number of resource elements (REs) allocated for transmission of uplink control information (UCI) and a number of coded modulation symbols per layer for hybrid automatic repeat request acknowledgement (HARQ-ACK) on the PUSCH; and

if the CSI report is to include the CSI part 2 transmission, determine a second number of coded modulation symbols per layer for the CSI part 2 transmission based at least partly on a difference between the number of REs allocated for transmission of the UCI and the first number of coded modulation symbols per layer.

20. The apparatus according to claim 19 , the processing circuitry further configured to:

encode, in accordance with the first number of coded modulation symbols per layer, the CSI part 1 transmission; and

if the CSI report is to include the CSI part 2: encode, in accordance with the second number of coded modulation symbols per layer, the CSI part 2 transmission.