Techniques for power headroom reporting for dynamic waveform switching
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a network node, a power headroom report, the power headroom report including a field indicating information associated with a first waveform and a second waveform, the second waveform and the first waveform having a common set of transmission parameters. The UE may communicate with the network node in accordance with the power headroom report. Numerous other aspects are described.
1 . An apparatus for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, the one or more processors individually or collectively configured to:
receive, from a network node, configuration information enabling dynamic waveform switching and configuring a power headroom report, the power headroom report including a field indicating information associated with a first waveform and a second waveform, the second waveform and the first waveform having a common set of transmission parameters, wherein the power headroom report includes a first set of fields associated with the first waveform and a second set of fields associated with the second waveform, the second set of fields including the field, the second set of fields and the first set of fields being based at least in part on the common set of transmission parameters, and the second waveform being associated with a type-1 power headroom report;
transmit, to the network node, the power headroom report based at least in part on the configuration information enabling dynamic waveform switching; and
communicate with the network node in accordance with the power headroom report.
2 . The apparatus of claim 1 , wherein the one or more processors, when configured to communicate with the network node, are configured to:
communicate with the network node using the second waveform.
3 . The apparatus of claim 1 , wherein the one or more processors are further configured to:
receive configuration information associated with triggering transmission of the power headroom report.
4 . The apparatus of claim 1 , wherein the field includes a value associated with identifying a power headroom for the second waveform or a maximum transmit power for the second waveform.
5 . The apparatus of claim 1 , wherein the power headroom report includes a first set of fields mapping to a first waveform type and a second set of fields mapping to a second waveform type, the second set of fields including the field.
6 . The apparatus of claim 1 , wherein the apparatus is configured to include the field in the power headroom report based at least in part on a dynamic waveform switching configuration.
7 . The apparatus of claim 1 , wherein the apparatus is configured to include the field in the power headroom report based at least in part on the common set of transmission parameters being compatible with the second waveform.
8 . The apparatus of claim 1 , wherein the power headroom report is associated with a first carrier and conveyed on the first carrier and another power headroom report for a second carrier is conveyed on the first carrier using a reference physical uplink shared channel to compute a power headroom.
9 . The apparatus of claim 8 , wherein the field is included in the power headroom report based at least in part on a characteristic of the second carrier.
10 . The apparatus of claim 1 , wherein the field conveys a request for switching from the first waveform to the second waveform.
11 . The apparatus of claim 1 , wherein a configuration of the field and a corresponding interpretation of the field are based at least in part on whether dynamic waveform switching is enabled.
12 . The apparatus of claim 11 , wherein a configuration of the field and a corresponding interpretation of the field are based at least in part on whether a condition is satisfied.
13 . The apparatus of claim 12 , wherein whether the condition is satisfied includes at least one of:
whether a value of a single layer transmission parameter satisfies a first threshold value,
whether a value of a frequency domain resource allocation parameter satisfies a second threshold value,
whether cyclic prefix orthogonal frequency division multiplexing is enabled, or
whether a quantity of resource blocks satisfies a threshold quantity of resource blocks.
14 . The apparatus of claim 12 , wherein the configuration of the field includes a division of the field into a first subfield and a second subfield, the first subfield relating to the first waveform and the second subfield relating to the second waveform.
15 . The apparatus of claim 1 , wherein a configuration of the field is based at least in part on a differential power headroom rule.
16 . The apparatus of claim 15 , wherein the differential power headroom rule relates to at least one of:
a reported UE capability,
a type of waveform for which a power capacity is reported,
a resource block allocation, or
a location of a resource block allocation.
17 . The apparatus of claim 1 , wherein the one or more processors are further configured to:
receive downlink control information with a physical uplink shared channel grant associated with indicating a request for the power headroom report; and
wherein the one or more processors, to transmit the power headroom report, are configured to transmit the power headroom report using the physical uplink shared channel grant.
18 . The apparatus of claim 17 , wherein the downlink control information includes a bit indicator or a field configuration to indicate the request for the power headroom report.
19 . The apparatus of claim 1 , wherein the one or more processors, to transmit the power headroom report, are configured to:
transmit the power headroom report based at least in part on a trigger condition, the trigger condition being associated with at least one of:
a threshold power value,
a physical uplink shared channel allocation,
a waveform switch,
a current waveform in use,
a previous waveform in use, or
a power parameter.
20 . The apparatus of claim 1 , wherein the type-1 power headroom report is computed using one or more parameters relating to the first waveform or the second waveform.
21 . An apparatus for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, the one or more processors individually or collectively configured to:
transmit, to a user equipment (UE), configuration information enabling dynamic waveform switching and configuring a power headroom report, the power headroom report including a field indicating information associated with a first waveform and a second waveform, the second waveform and the first waveform having a common set of transmission parameters, wherein the power headroom report includes a first set of fields associated with the first waveform and a second set of fields associated with the second waveform, the second set of fields including the field, the second set of fields and the first set of fields being based at least in part on the common set of transmission parameters, and the second waveform being associated with a type- 1 power headroom report;
receive, from the UE, the power headroom report based at least in part on the configuration information enabling dynamic waveform switching; and
communicate with the UE in accordance with the power headroom report.
22 . The apparatus of claim 21 , wherein the one or more processors, when configured to communicate with the UE, are configured to:
communicate with the UE using the second waveform.
23 . The apparatus of claim 21 , wherein the one or more processors are further configured to:
transmit configuration information associated with triggering transmission of the power headroom report.
24 . The apparatus of claim 21 , wherein the field includes a value associated with identifying a power headroom for the second waveform or a maximum transmit power for the second waveform.
25 . A method of wireless communication performed by a user equipment (UE), comprising: transmitting, to a network node, a power headroom report, the power headroom report including a field indicating information associated with a first waveform and a second waveform, the second waveform and the first waveform having a common set of transmission parameters, wherein the power headroom report includes a first set of fields associated with the first waveform and a second set of fields associated with the second waveform, the second set of fields including the field, the second set of fields and the first set of fields being based at least in part on the common set of transmission parameters, and the second waveform being associated with a type-1 power headroom report; receiving, from the UE, the power headroom report based at least in part on the configuration information enabling dynamic waveform switching; and communicating with the network node in accordance with the power headroom report.
26 . A method of wireless communication performed by a network node, comprising: receiving, from a user equipment (UE), a power headroom report, the power headroom report including a field indicating information associated with a first waveform and a second waveform, the second waveform and the first waveform having a common set of transmission parameters, wherein the power headroom report includes a first set of fields associated with the first waveform and a second set of fields associated with the second waveform, the second set of fields including the field, the second set of fields and the first set of fields being based at least in part on the common set of transmission parameters, and the second waveform being associated with a type-1 power headroom report; transmitting, to the network node, the power headroom report based at least in part on the configuration information enabling dynamic waveform switching; and communicating with the UE in accordance with the power headroom report.
27 . The method of claim 25 , further comprising:
communicating with the network node using the second waveform.
28 . The method of claim 25 , further comprising:
receiving configuration information associated with triggering transmission of the power headroom report.
29 . The method of claim 25 , wherein the field includes a value associated with identifying a power headroom for the second waveform or a maximum transmit power for the second waveform.
30 . The method of claim 25 , wherein the power headroom report includes a first set of fields mapping to a first waveform type and a second set of fields mapping to a second waveform type, the second set of fields including the field.