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1. WO2020065625 - PROCÉDÉ ET APPAREIL DE GÉNÉRATION DE RAPPORT DE CSI

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CLAIMS

We claim:

1. A method at a device, the method comprising:

receiving a control channel in a first downlink slot, the control channel containing downlink control information with a downlink downlink control information format,

where the downlink control information contains a channel state information report trigger that triggers a channel state information report,

where the downlink control information schedules physical downlink shared channel transmissions repeated a number of times in a set of downlink slots, and where each physical downlink shared channel transmission of the repeated physical downlink shared channel transmissions is in a separate downlink slot;

generating a channel state information report in response to receiving the channel state information report trigger;

determining at least one uplink resource to transmit the generated channel state information report, where the at least one uplink resource is determined based on the number of repeated physical downlink shared channel transmissions; and

transmitting the generated channel state information report in the determined at least one uplink resource.

2. The method according to claim 1, wherein the at least one uplink resource for transmitting the channel state information report is further determined based on attributes of the channel state information report.

3. The method according to claim 1,

wherein determining the at least one uplink resource further comprises:

determining at least two physical uplink control channel resource candidates including a first physical uplink control channel resource candidate and a second physical uplink control channel resource candidate,

where the first physical uplink control channel resource candidate is determined based on a second downlink slot, where the second downlink slot is in the set of downlink slots, and

where the second physical uplink control channel resource candidate is determined based on a third downlink slot, where the third downlink slot is in the set of downlink slots; and

selecting one of the first physical uplink control channel resource candidate or the second physical uplink control channel resource candidate as an uplink resource based on at least one selection criterion, and

wherein transmitting comprises transmitting the generated channel state information report in the selected physical uplink control channel resource candidate.

4. The method according to claim 3, wherein the at least one selection criterion is to select between the first physical uplink control channel resource candidate and the second physical uplink control channel resource candidate for the earliest determined physical uplink control channel resource candidate that occurs earlier than the other determined physical uplink control channel resource candidate.

5. The method according to claim 3, wherein the at least one selection criterion is to select the physical uplink control channel resource candidate that is associated with a downlink slot that is the same downlink slot as a most recent physical downlink shared channel repetition.

6. The method according to claim 3, wherein the at least one selection criterion is to select the physical uplink control channel resource candidate that is associated with a downlink slot that is the same downlink slot as the latest physical downlink shared channel repetition that resulted in successful decoding of a transport block corresponding to the physical downlink shared channel.

7. The method according to claim 1, further comprising determining a physical uplink control channel resource for hybrid automatic repeat request acknowledgement feedback corresponding to downlink data transmissions,

wherein determining the at least one uplink resource further comprises determining an uplink physical uplink control channel resource to transmit the generated channel state information report, where the uplink physical uplink control channel resource is determined to be the same resource as the uplink physical uplink control channel resource determined for hybrid automatic repeat request acknowledgement feedback corresponding to the downlink data transmissions, and

wherein transmitting the generated channel state information report comprises transmitting the generated channel state information report in the determined uplink physical uplink control channel resource.

8 The method according to claim 1, further comprising:

multiplexing a hybrid automatic repeat request acknowledgement feedback associated with the downlink data transmissions with the generated channel state information report; and

transmitting the hybrid automatic repeat request acknowledgement feedback on the uplink physical uplink control channel resource.

9. The method according to claim 1,

further comprising determining an uplink physical uplink control channel resource for hybrid automatic repeat request acknowledgement feedback associated with the downlink data transmissions,

wherein determining the at least one uplink resource further comprises determining an uplink physical uplink control channel resource to transmit the generated channel state information report, where the uplink physical uplink control channel resource to transmit the generated channel state information report is determined to be different from the uplink physical uplink control channel resource determined for hybrid automatic repeat request acknowledgement feedback associated with the downlink data transmissions.

10. The method according to claim 1, wherein the at least one uplink resource is further determined based on which transmission-reception point is used for communication.

11. The method according to claim 1, wherein the generated channel state information report has a size smaller than a threshold size.

12. The method according to claim 1, further comprising:

determining at least one channel state information reference resource comprising at least one time-domain resource and at least one frequency-domain resource based on the received control channel; and

determining which channel state information reference resources of the at least one channel state information reference resource are in valid downlink slots,

wherein generating the channel state information report comprises generating the channel state information report based on measurements associated with the determined channel state information reference resources that are in valid downlink slots,

wherein a downlink slot comprises orthogonal frequency division multiplexing symbols used for downlink operation, and

wherein a downlink slot is a valid downlink slot if it comprises at least one symbol assigned by a higher layer configuration for downlink operation.

13. The method according to claim 12, wherein the at least one channel state information reference resource is determined based on the received control channel by being based on the number of repeated physical downlink shared channel transmissions and based on attributes of the channel state information report.

14. The method according to claim 12,

wherein the at least one channel state information reference resource includes only one channel state information reference resource, and

wherein the at least one time-domain resource of the channel state information reference resource is determined to be the same slot as the first downlink slot.

15. The method according to claim 12,

wherein the at least one channel state information reference resource includes only one channel state information reference resource, and

wherein the channel state information reference resource is determined to be a most recent slot including an instance of a physical downlink shared channel of the repeated physical downlink shared channel that is in a valid downlink slot.

16. The method according to claim 12,

wherein the at least one channel state information reference resource includes only one channel state information reference resource, and

wherein the channel state information reference resource is determined to be a most recent slot including an instance of a physical downlink shared channel of the repeated physical downlink shared channel that resulted in successful decoding of the transport block in the repeated physical downlink shared channel and that is in a valid downlink slot.

17. An apparatus comprising:

a transceiver that receives a control channel containing downlink control information with a downlink downlink control information format in a first downlink slot, where the downlink control information contains a channel state information report trigger that triggers a channel state information report,

where the downlink control information schedules physical downlink shared channel transmissions repeated a number of times in a set of downlink slots, and where each physical downlink shared channel transmission of the repeated physical downlink shared channel transmissions is in a separate downlink slot; and a controller coupled to the transceiver, where the controller

generates a channel state information report in response to receiving the channel state information report trigger, and

determines at least one uplink resource to transmit the generated channel state information report, where the at least one uplink resource is determined based on the number of repeated physical downlink shared channel transmissions,

wherein the transceiver transmits the generated channel state information report in the determined at least one uplink resource.

18. The apparatus according to claim 17,

wherein the controller determines the at least one uplink resource by:

determining at least two physical uplink control channel resource candidates including a first physical uplink control channel resource candidate and a second physical uplink control channel resource candidate,

where the first physical uplink control channel resource candidate is determined based on a second downlink slot, where the second downlink slot is in the set of downlink slots, and

where the second physical uplink control channel resource candidate is determined based on a third downlink slot, where the third downlink slot is in the set of downlink slots, and

selecting one of the first physical uplink control channel resource candidate or the second physical uplink control channel resource candidate as an uplink resource based on at least one selection criterion, and

wherein the transceiver transmits the generated channel state information report in the selected physical uplink control channel resource candidate.

19. The apparatus according to claim 17,

wherein the controller

determines an uplink physical uplink control channel resource for hybrid automatic repeat request acknowledgement feedback corresponding to downlink data transmissions, and

determines the at least one uplink resource by determining an uplink physical uplink control channel resource to transmit the generated channel state information report, where the uplink physical uplink control channel resource is determined to be the same resource as the uplink physical uplink control channel resource determined for hybrid automatic repeat request acknowledgement feedback corresponding to the downlink data transmissions, and

wherein the transceiver transmits the generated channel state information report in the determined uplink physical uplink control channel resource.

20. The apparatus according to claim 17,

wherein the controller

determines at least one channel state information reference resource comprising at least one time-domain resource and at least one frequency-domain resource based on the received control channel,

determines which channel state information reference resources of the at least one channel state information reference resource are in valid downlink slots, and generates the channel state information report based on measurements associated with the determined channel state information reference resources that are in valid downlink slots,

wherein a downlink slot comprises orthogonal frequency division multiplexing symbols used for downlink operation and

wherein a downlink slot is a valid downlink slot if it comprises at least one symbol assigned by a higher layer configuration for downlink operation.