Aperiodic channel state information physical uplink shared channel repetition with demodulation reference signal bundling
Methods, systems, and devices for wireless communications are described. A device may receive signaling including a channel state information (CSI) reporting configuration. The device may determine one or more resources of a physical uplink channel for aperiodic CSI reporting based on the CSI reporting configuration and transmit an aperiodic CSI report over the physical uplink channel based on the on the one or more resources. In some examples, the device may also determine a set of demodulation reference signal (DMRS) symbols associated with a hop of a set of hops in a time domain or a frequency domain, and coherently transmit, based on the determining, the set of DMRS symbols associated with the hop of the set of hops.
1 . A method for wireless communication at a user equipment (UE), comprising:
receiving signaling comprising a channel state information reporting configuration, the channel state information reporting configuration comprising at least a physical uplink shared channel repetition configuration;
determining one or more resources of a physical uplink channel for aperiodic channel state information reporting based at least in part on the channel state information reporting configuration; and
transmitting a plurality of repetitions of an aperiodic channel state information report over the physical uplink channel based at least in part on the one or more resources, wherein, in accordance with the physical uplink shared channel repetition configuration, a first repetition of the aperiodic channel state information report is transmitted via a first component carrier and a second repetition of the aperiodic channel state information report is transmitted via a second component carrier.
2 . The method of claim 1 , wherein the physical uplink shared channel repetition configuration comprises a number of physical uplink shared channel repetitions and a starting of a symbol in each slot associated with the number of physical uplink shared channel repetitions.
3 . The method of claim 2 , wherein the channel state information reporting configuration comprises the physical uplink shared channel repetition configuration, and wherein determining the one or more resources of the physical uplink channel for the aperiodic channel state information reporting comprises:
determining the one or more resources of the physical uplink channel based at least in part on the physical uplink shared channel repetition configuration.
4 . The method of claim 3 , further comprising:
determining a physical uplink shared channel repetition based at least in part on the physical uplink shared channel repetition configuration, wherein transmitting the plurality of repetitions of the aperiodic channel state information report comprises:
transmitting the plurality of repetitions of the aperiodic channel state information report over the physical uplink channel according to the physical uplink shared channel repetition,
wherein the physical uplink shared channel repetition comprises a repetition of the physical uplink channel over the one or more resources comprising mini-slots or slots, and the repetition of the physical uplink channel over the one or more resources is consecutive or nonconsecutive.
5 . The method of claim 3 , further comprising:
determining a payload size of the aperiodic channel state information report; and
determining that the payload size of the aperiodic channel state information report satisfies a threshold, the threshold comprising a coding rate for the aperiodic channel state information report, wherein transmitting the plurality of repetitions of the aperiodic channel state information report comprises:
transmitting the plurality of repetitions of the aperiodic channel state information report over the physical uplink channel according to the physical uplink shared channel repetition configuration based at least in part on the payload size of the aperiodic channel state information report satisfying the threshold.
6 . The method of claim 3 , further comprising:
identifying a bit indication in a radio resource control configuration or in a downlink control information message, the bit indication comprising a multibit indication; and
determining, based at least in part on the bit indication, a number of component carriers for the aperiodic channel state information reporting and a repetition factor associated with the aperiodic channel state information reporting, wherein transmitting the plurality of repetitions of the aperiodic channel state information report comprises:
transmitting the plurality of repetitions of the aperiodic channel state information report over the physical uplink channel according to the number of component carriers and the repetition factor.
7 . The method of claim 3 , further comprising:
receiving a control message comprising an indication of a component carrier for the aperiodic channel state information report, the component carrier comprising the first component carrier or the second component carrier; and
determining a physical uplink shared channel repetition based at least in part on the physical uplink shared channel repetition configuration, wherein transmitting the plurality of repetitions of the aperiodic channel state information report comprises:
transmitting one or more repetitions of the aperiodic channel state information report over the physical uplink channel on the component carrier according to the physical uplink shared channel repetition, wherein the physical uplink shared channel repetition is transmitted on the component carrier.
8 . The method of claim 3 , further comprising:
receiving a control message comprising an indication of one or more component carriers for the aperiodic channel state information report, the one or more component carriers comprising at least the first component carrier and the second component carrier; and
determining a physical uplink shared channel repetition based at least in part on the physical uplink shared channel repetition configuration, wherein transmitting the plurality of repetitions of the aperiodic channel state information report comprises:
transmitting the plurality of repetitions of the aperiodic channel state information report on the one or more component carriers according to the physical uplink shared channel repetition configuration, wherein the first component carrier and the second component carrier correspond to consecutive mini-slots or slots, or nonconsecutive mini-slots or slots.
9 . The method of claim 1 , wherein the channel state information reporting configuration comprises a physical uplink shared channel re-transmission configuration, and wherein determining the one or more resources of the physical uplink channel for the aperiodic channel state information reporting comprises:
determining the one or more resources of the physical uplink channel based at least in part on the physical uplink shared channel re-transmission configuration.
10 . The method of claim 9 , further comprising:
receiving a feedback message associated with the aperiodic channel state information report based at least in part on the transmitting; and
retransmitting, based at least in part on the feedback message, the aperiodic channel state information report over the physical uplink channel according to the physical uplink shared channel re-transmission configuration.
11 . The method of claim 10 , further comprising:
receiving a second signaling comprising a second channel state information reporting configuration for periodic channel state information reporting or semi-persistent channel state information reporting; and
transmitting, based at least in part on the feedback message, a periodic channel state information report or a semi-persistent channel state information report according to the second channel state information reporting configuration.
12 . The method of claim 10 , further comprising:
receiving a control message comprising an indication of a component carrier for the aperiodic channel state information report, the component carrier comprising the first component carrier or the second component carrier, wherein transmitting the plurality of repetitions of the aperiodic channel state information report comprises:
transmitting the plurality of repetitions of the aperiodic channel state information report over the physical uplink channel and on the component carrier indicated in the control message; and
retransmitting, based at least in part on the feedback message, the aperiodic channel state information report on the component carrier indicated in the control message or on a different component carrier from the component carrier indicated in the control message.
13 . The method of claim 1 , further comprising:
determining to transmit the aperiodic channel state information report on the physical uplink channel based at least in part on the channel state information reporting configuration, the physical uplink channel comprising a physical uplink shared channel, wherein transmitting the plurality of repetitions of the aperiodic channel state information report comprises:
transmitting the plurality of repetitions of the aperiodic channel state information report on the physical uplink shared channel based at least in part on the determining.
14 . The method of claim 13 , further comprising:
determining that the physical uplink shared channel is configured to exclusively carry the aperiodic channel state information report based at least in part on the channel state information reporting configuration;
transmitting the plurality of repetitions of the aperiodic channel state information report exclusively on the physical uplink shared channel;
identifying that the UE is not configured with physical uplink shared channel repetition or physical uplink shared channel re-transmission, or both, when the physical uplink channel is scheduled to carry the aperiodic channel state information report and a transport channel, wherein the transport channel comprises an uplink shared channel; and
refraining from transmitting the transport channel on the physical uplink shared channel based at least in part on the identifying.
15 . The method of claim 1 , further comprising:
determining that the physical uplink channel is configured to jointly carry the aperiodic channel state information report and a transport channel, wherein the transport channel comprises an uplink shared channel, wherein transmitting the plurality of repetitions of the aperiodic channel state information report comprises:
transmitting jointly the aperiodic channel state information report and the uplink shared channel on the physical uplink channel.
16 . The method of claim 1 , wherein:
the signaling comprises radio resource control signaling, downlink control signaling, or medium access control-control element signaling, or a combination thereof; and
the one or more resources of the physical uplink channel comprises mini-slots or slots, or a combination thereof.
17 . A method for wireless communication at a base station, comprising:
determining one or more resources of a physical uplink channel for aperiodic channel state information reporting based at least in part on a channel state information reporting configuration;
transmitting signaling comprising the channel state information reporting configuration, the channel state information reporting configuration comprising a physical uplink shared channel repetition configuration; and
receiving a plurality of repetitions of an aperiodic channel state information report based at least in part on the transmitting, wherein, in accordance with the physical uplink shared channel repetition configuration, a first repetition of the aperiodic channel state information report is received via a first component carrier and a second repetition of the aperiodic channel state information report is received via a second component carrier.
18 . A user equipment (UE), comprising:
one or more memories storing processor-executable code; and
one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the UE to:
receive signaling comprising a channel state information reporting configuration, the channel state information reporting configuration comprising at least a physical uplink shared channel repetition configuration;
determine one or more resources of a physical uplink channel for aperiodic channel state information reporting based at least in part on the channel state information reporting configuration; and
transmit a plurality of repetitions of an aperiodic channel state information report over the physical uplink channel based at least in part on the one or more resources, wherein, in accordance with the physical uplink shared channel repetition configuration, a first repetition of the aperiodic channel state information report is transmitted via a first component carrier and a second repetition of the aperiodic channel state information report is transmitted via a second component carrier.
19 . The UE of claim 18 , wherein the physical uplink shared channel repetition configuration comprises a number of physical uplink shared channel repetitions and a starting of a symbol in each slot associated with the number of physical uplink shared channel repetitions.
20 . The UE of claim 19 , wherein the channel state information reporting configuration comprises the physical uplink shared channel repetition configuration, and wherein the one or more resources of the physical uplink channel for the aperiodic channel state information reporting is determined based at least in part on the physical uplink shared channel repetition configuration.