Decoding-based channel state information for energy harvesting

1 . A user equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors, coupled to the memory, configured to:

receive, from a base station, a first physical downlink shared channel (PDSCH) transmission transmitted using a first modulation and coding scheme (MCS); and

transmit, to the base station, feedback based at least in part on decoding the first PDSCH transmission, wherein the feedback includes an acknowledgement (ACK) or negative acknowledgement (NACK) and a channel state information (CSI) report that includes at least an indication of a second MCS based at least in part on a target block error rate (BLER) and a target charging rate for energy harvesting.

2 . The UE of claim 1 , wherein the one or more processors are further configured to:

receive, from the base station, a second PDSCH transmission transmitted using the second MCS.

3 . The UE of claim 2 , wherein the one or more processors are further configured to:

decode the second PDSCH transmission using a first portion of a total received power associated with the second PDSCH transmission; and

perform energy harvesting from the second PDSCH transmission using a second portion of the total received power associated with the second PDSCH transmission, wherein the first portion and the second portion of the total received power are based at least in part on a power splitting factor associated with the target charging rate.

4 . The UE of claim 1 , wherein the second MCS is based at least in part on an adjusted signal-to-interference-plus-noise ratio (SINR) associated with the target charging rate and the target BLER.

5 . The UE of claim 4 , wherein the adjusted SINR is based at least in part on a measured SINR of the first PDSCH transmission and a power splitting factor associated with the target charging rate.

6 . The UE of claim 1 , wherein the indication of the second MCS includes an indication of a difference between the first MCS and the second MCS.

7 . The UE of claim 1 , wherein the indication of the second MCS includes an indication of an index value of a plurality of index values, each associated with a respective configuration of an MCS and a power splitting factor for energy harvesting.

8 . The UE of claim 7 , wherein the one or more processors are further configured to:

receive, from the base station, configuration information including an indication of the plurality of index values and the respective configuration of the MCS and the power splitting factor associated with each index value of the plurality of index values.

9 . The UE of claim 1 , wherein the target BLER is associated with at least one of an energy harvesting mode or an energy state of the UE.

10 . The UE of claim 9 , wherein the one or more processors are further configured to:

transmit, to the base station, an indication of the at least one of the energy harvesting mode or the energy state of the UE; and

receive, from the base station, configuration information including an indication of the target BLER associated with the at least one of the energy harvesting mode or the energy state of the UE.

11 . The UE of claim 9 , wherein the one or more processors are further configured to:

receive, from the base station, configuration information including an indication of a plurality of target BLERs for a same priority, wherein the plurality of target BLERs are associated with respective energy harvesting modes or energy harvesting states, and wherein the target BLER is one of the plurality of target BLERs.

12 . The UE of claim 1 , wherein the one or more processors, to receive the first PDSCH transmission, are configured to:

receive, in a first time window, one or more first PDSCH transmissions transmitted using the first MCS, wherein the CSI report includes CSI associated with the one or more first PDSCH transmissions in the first time window.

13 . The UE of claim 12 , wherein the CSI report indicates at least one of pathloss information associated with the one or more first PDSCH transmissions, pathloss difference information between the pathloss information associated with the one or more first PDSCH transmissions and previous pathloss information, the target charging rate, a difference between the target charging rate and a previous charging rate, a target power splitting factor for energy harvesting, a difference between the target power splitting factor and a previous power splitting factor, a plurality of MCS levels associated with respective target charging rates or target power splitting factors, a predicted energy state for the UE, or a predicted power profile for the UE.

14 . The UE of claim 12 , wherein the CSI report indicates at least one of a recommended component carrier and bandwidth part pair, a maximum quantity of repetitions for uplink communications, a maximum MCS level, a maximum quantity of component carriers and active bandwidth parts, a maximum quantity of CSI processes, a maximum quantity of transmit and receive antennas, or a maximum quantity of low-density parity-check code iterations.

15 . The UE of claim 12 , wherein the one or more processors are further configured to:

receive, in a second time window, one or more second PDSCH transmissions based at least in part on the CSI report including the CSI associated with the one or more first PDSCH transmissions in the first time window.

16 . A base station for wireless communication, comprising:

a memory; and

one or more processors, coupled to the memory, configured to:

transmit, to a user equipment (UE), a first physical downlink shared channel (PDSCH) transmission using a first modulation and coding scheme (MCS); and

receive, from the UE, feedback associated with the first PDSCH transmission, wherein the feedback includes an acknowledgement (ACK) or negative acknowledgement (NACK) and a channel state information (CSI) report that includes at least an indication of a second MCS based at least in part on a target block error rate (BLER) and a target charging rate for energy harvesting by the UE.

17 . The base station of claim 16 , wherein the one or more processors are further configured to:

transmit, to the UE, a second PDSCH transmission using the second MCS.

18 . The base station of claim 16 , wherein the indication of the second MCS includes an indication of a difference between the first MCS and the second MCS.

19 . The base station of claim 16 , wherein the indication of the second MCS includes an indication of an index value of a plurality of index values, each associated with a respective configuration of an MCS and a power splitting factor for energy harvesting.

20 . The base station of claim 19 , wherein the one or more processors are further configured to:

transmit, to the UE, configuration information including an indication of the plurality of index values and the respective configuration of the MCS and the power splitting factor associated with each index value of the plurality of index values.

21 . The base station of claim 16 , wherein the target BLER is associated with at least one of an energy harvesting mode or an energy state of the UE.

22 . The base station of claim 21 , wherein the one or more processors are further configured to:

receive, from the UE, an indication of the at least one of the energy harvesting mode or the energy state of the UE; and

transmit, to the UE, configuration information including an indication of the target BLER associated with the at least one of the energy harvesting mode or the energy state of the UE.

23 . The base station of claim 21 , wherein the one or more processors are further configured to:

transmit, to the UE, configuration information including an indication of a plurality of target BLERs for a same priority, wherein the plurality of target BLERs are associated with respective energy harvesting modes or energy harvesting states, and wherein the target BLER is one of the plurality of target BLERs.

24 . A method of wireless communication performed by a user equipment (UE), comprising:

receiving, from a base station, a first physical downlink shared channel (PDSCH) transmission transmitted using a first modulation and coding scheme (MCS); and

transmitting, to the base station, feedback based at least in part on decoding the first PDSCH transmission, wherein the feedback includes an acknowledgement (ACK) or negative acknowledgement (NACK) and a channel state information (CSI) report that includes at least an indication of a second MCS based at least in part on a target block error rate (BLER) and a target charging rate for energy harvesting.

25 . The method of claim 24 , further comprising:

receiving, from the base station, a second PDSCH transmission transmitted using the second MCS.

26 . The method of claim 25 , further comprising:

decoding the second PDSCH transmission using a first portion of a total received power associated with the second PDSCH transmission; and

performing energy harvesting from the second PDSCH transmission using a second portion of the total received power associated with the second PDSCH transmission, wherein the first portion and the second portion of the total received power are based at least in part on a power splitting factor associated with the target charging rate.

27 . The method of claim 24 , wherein the second MCS is based at least in part on an adjusted signal-to-interference-plus-noise ratio (SINR) associated with the target charging rate and the target BLER.

28 . The method of claim 27 , wherein the adjusted SINR is based at least in part on a measured SINR of the first PDSCH transmission and a power splitting factor associated with the target charging rate.

29 . A method of wireless communication performed by a base station, comprising:

transmitting, to a user equipment (UE), a first physical downlink shared channel (PDSCH) transmission using a first modulation and coding scheme (MCS); and

receiving, from the UE, feedback associated with the first PDSCH transmission, wherein the feedback includes an acknowledgement (ACK) or negative acknowledgement (NACK) and a channel state information (CSI) report that includes at least an indication of a second MCS based at least in part on a target block error rate (BLER) and a target charging rate for energy harvesting by the UE.

30 . The method of claim 29 , further comprising:

transmitting, to the UE, a second PDSCH transmission using the second MCS.