Interference cancellation for full duplex communication

1 . An apparatus for wireless communication at a first user equipment (UE), comprising:

memory; and

one or more processors coupled to the memory and configured to cause the first UE to:

receive, from a network entity, a single downlink control information (DCI) that includes:

a first indicator of a schedule for a downlink transmission associated with the first UE, and

a second indicator that provides interference cancellation (IC) information for an uplink transmission associated with a second UE, wherein the uplink transmission is scheduled to at least partially overlap in time and frequency with the downlink transmission, wherein the network entity does not comprise the second UE; and

decode the downlink transmission based on at least a portion of the IC information for the uplink transmission.

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

process at least a part of the uplink transmission based on the IC information to generate additional IC information; and

cancel interference on the downlink transmission that is caused by the uplink transmission based on the additional IC information.

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

process at least the portion of the uplink transmission by demodulating and decoding at least the portion of the uplink transmission.

4 . The apparatus of claim 1 , further comprising:

a transceiver coupled to the one or more processors, wherein the single DCI received by the transceiver further includes a third indicator of a second schedule for the uplink transmission for the second UE, and wherein the IC information comprises one or more shared parameters between the downlink transmission for the first UE and the uplink transmission for the second UE.

5 . The apparatus of claim 4 , wherein the one or more shared parameters comprises at least one of a time domain resource assignment, a frequency resource domain assignment, a radio network temporary identifier (RNTI), a demodulation reference signal (DMRS), a modulation and coding scheme (MCS), or a scrambling sequence seed.

6 . The apparatus of claim 4 , wherein the single DCI further includes a fourth indicator of one or more downlink parameters for the downlink transmission and one or more uplink parameters for the uplink transmission in addition to the one or more shared parameters.

7 . The apparatus of claim 6 , wherein the first indicator of the schedule for the downlink transmission comprises an indicator of at least one of an MCS, a new data indicator, a redundancy version, a hybrid automatic repeat request (HARQ) process number, an assignment index, a resource indicator, a transmission control protocol (TPC) command, or a feedback timing indicator different from the uplink transmission.

8 . The apparatus of claim 1 , wherein the IC information comprises one or more shared parameters that are common to the downlink transmission and the uplink transmission.

9 . The apparatus of claim 8 , wherein the one or more processors are further configured to cause the first UE to:

receive a third indicator from the network entity that the IC information comprises the one or more shared parameters that are common to the downlink transmission and the uplink transmission; and

decode at least the portion of the uplink transmission using the IC information by decoding at least the portion of the uplink transmission using the one or more shared parameters.

10 . The apparatus of claim 9 , wherein the one or more shared parameters comprises at least one of a shared RNTI, a shared DMRS, a shared MCS, or a shared scrambling sequence seed.

11 . The apparatus of claim 10 , wherein the one or more processors are further configured to cause the first UE to:

decode a second DCI that includes a fourth indicator of the uplink transmission for the second UE based on the shared RNTI to determine a DMRS or an MCS for the uplink transmission; and

decode at least the portion of the uplink transmission based on the IC information by decoding at least the portion of the uplink transmission based on the DMRS or the MCS.

12 . The apparatus of claim 10 , wherein the one or more processors are further configured to cause the first UE to:

receive, from the network entity, a second DCI that includes a fourth indicator of an additional downlink transmission that does not overlap in the time and the frequency with the uplink transmission from the second UE, wherein the second DCI comprises a cell RNTI (C-RNTI) different from the shared RNTI, wherein the third indicator comprises the shared RNTI; and

decode at least the portion of the uplink transmission based on the shared RNTI in response to a determination that the single DCI comprises the shared RNTI.

13 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the first UE to:

decode a second DCI that includes a fourth indicator of the uplink transmission for the second UE based on an RNTI for the uplink transmission to determine a DMRS or an MCS for the uplink transmission; and

decode at least the portion of the uplink transmission using the DMRS or the MCS, and wherein the IC information comprises the RNTI for the uplink transmission.

14 . The apparatus of claim 1 , wherein the IC information comprises a DMRS or an MCS for the uplink transmission, wherein the one or more processors are further configured to cause the first UE to:

decode at least the portion of the uplink transmission based on the IC information by decoding at least the portion of the uplink transmission based on at least the DMRS or the MCS for the uplink transmission.

15 . The apparatus of claim 14 , wherein the IC information comprises a scrambling sequence seed, wherein the one or more processors are further configured to cause the first UE to:

perform IC on the downlink transmission by a performance of codeword level interference cancellation (CWIC) that uses the scrambling sequence seed.

16 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the first UE to:

receive, from the network entity, an RRC configuration, wherein the RRC configuration includes a third indicator of a set of parameters, wherein the second indicator comprises a selection of the IC information from the set of parameters.

17 . The apparatus of claim 1 , wherein the IC information comprises a timing advance (TA) for the uplink transmission, wherein the one or more processors are further configured to cause the first UE to:

decode at least the portion of the uplink transmission based on the IC information by decoding at least the portion of the uplink transmission based on the TA.

18 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the first UE to:

transmit a UE capability of the first UE, wherein the UE capability includes a third indicator that indicates support for one or more IC operations, wherein the IC information is based on the one or more IC operations supported by the first UE.

19 . An apparatus for wireless communication at a network entity, comprising:

memory; and

one or more processors coupled to the memory and configured to cause the network entity to:

schedule a downlink transmission for a first user equipment (UE) and an uplink transmission for a second UE, wherein the uplink transmission at least partially overlaps in time and frequency with the downlink transmission, wherein the network entity does not comprise the second UE; and

output, to the first UE, a single downlink control information (DCI), wherein the single DCI includes:

a first indicator of the scheduled downlink transmission for the first UE, and

a second indicator that provides interference cancellation (IC) information for the scheduled uplink transmission for the second UE.

20 . The apparatus of claim 19 , further comprising:

a transceiver coupled to the one or more processors and configured to transmit the single DCI, wherein the single DCI transmitted by the transceiver further includes a third indicator of a second schedule for the uplink transmission for the second UE, and wherein the IC information comprises one or more shared parameters between the downlink transmission for the first UE and the uplink transmission for the second UE.

21 . The apparatus of claim 20 , wherein the ne or mor shared parameters comprises at least one of a time domain resource assignment, a frequency resource domain assignment, a radio network temporary identifier (RNTI), a demodulation refrence signal (DMRS), a modulation and coding scheme (MCS), or a scrambling sequence seed.

22 . The apparatus of claim 20 , wherein the one or more processors are further configured to cause the network entity to:

schedule the downlink transmission to have at least one of an MCS, a new data indicator, a redundancy version, a hybrid automatic repeat request (HARQ) process number, an assignment index, a resource indicator, a transmission control protocol (TPC) command, or a feedback timing indicator different from the uplink transmission, and wherein the single DCI further includes a fourth indicator of one or more downlink parameters for the downlink transmission and one or more uplink parameters for the uplink transmission in addition to the one or more shared parameters.

23 . The apparatus of claim 19 , wherein the IC information comprises one or more shared parameters that are common to the downlink transmission and the uplink transmission.

24 . The apparatus of claim 23 , wherein the one or more processors are further configured to cause the network entity to:

output, to the first UE, a third indicator that the IC information comprises the one or more shared parameters that are common to the downlink transmission and the uplink transmission, and wherein the one or more shared parameters comprises at least one of a shared RNTI, a shared DMRS, a shared MCS, or a shared scrambling sequence seed.

25 . The apparatus of claim 24 , wherein the one or more processors are further configured to cause the network entity to:

scramble a cyclic redundancy check (CRC) of a second DCI, wherein the second DCI includes a sixth indicator of the scheduled uplink transmission based on the shared RNTI; and

output, to the first UE, the second DCI that includes the sixth indicator of the scheduled uplink transmission.

26 . The apparatus of claim 24 , wherein the one or more processors are further configured to cause the network entity to:

output, to the first UE, a second DCI that includes a sixth indicator of an additional downlink transmission that does not overlap in the time and the frequency with the uplink transmission from the second UE, wherein the second DCI has a cell RNTI (C-RNTI) different from the shared RNTI.

27 . The apparatus of claim 19 , wherein the IC information comprises at least one of a first RNTI for the uplink transmission different from a second RNTI for the downlink transmission, a DMRS for the uplink transmission or an MCS for the uplink transmission.

28 . The apparatus of claim 19 , wherein the one or more processors are further configured to cause the network entity to:

obtain, from the first UE, a report comprising a third indicator that the first UE has a capability to perform IC on the downlink transmission; and

schedule the uplink transmission to at least partially overlap in the time and the frequency with the downlink transmission in response to the obtained report comprising the third indicator that the first UE has the capability to perform the IC on the downlink transmission.

29 . The apparatus of claim 28 , wherein the obtained report comprises an identifier of a type of IC, wherein the identifier identifies at least one of symbol level interference cancellation (SLIC) or codeword level interference cancellation (CWIC), wherein the one or more processors are further configured to cause the network entity to:

generate the IC information to output to the first UE based on the identifier of the type of IC; and

include a scrambling sequence seed in the IC information of the single DCI in response to the identifier that identifies the type of the IC as the CWIC.

30 . The apparatus of claim 19 , wherein the one or more processors are further configured to cause the network entity to:

output, to the first UE, an RRC configuration, wherein the RRC configuration includes a third indicator that defines a set of parameters, and wherein the second indicator comprises a selection of the IC information from the set of parameters.

31 . The apparatus of claim 19 , wherein the IC information comprises a timing advance (TA) for the uplink transmission.

32 . A method for wireless communication at a first user equipment (UE), comprising:

receiving, from a network entity, a single downlink control information (DCI) that includes:

a first indicator of a schedule for a downlink transmission associated with the first UE, and

a second indicator providing interference cancellation (IC) information for an uplink transmission associated with a second UE, wherein the uplink transmission is scheduled to at least partially overlap in time and frequency with the downlink transmission, wherein the network entity does not comprise the second UE; and

decoding the downlink transmission based on at least a portion of the IC information for the uplink transmission.

33 . The method of claim 32 , wherein the IC information comprises one or more shared parameters common to the downlink transmission and the uplink transmission, the method further comprising:

receiving a third indicator from the network entity indicating that the IC information comprises the one or more shared parameters common to the downlink transmission and the uplink transmission; and

decoding at least the portion of the uplink transmission using the IC information by decoding at least the portion of the uplink transmission using the one or more shared parameters.

34 . A method for wireless communication at a network entity, comprising:

scheduling a downlink transmission for a first user equipment (UE) and an uplink transmission for a second UE, the uplink transmission at least partially overlapping in time and frequency with the downlink transmission, wherein the network entity does not comprise the second UE; and

outputting, to the first UE, a single downlink control information (DCI), wherein the single DCI includes:

a first indicator of the scheduled downlink transmission for the first UE, and

a second indicator providing interference cancellation (IC) information for the scheduled uplink transmission for the second UE.

35 . The method of claim 34 , wherein the IC information comprises one or more shared parameters common to the downlink transmission and the uplink transmission, the method further comprising:

outputting, to the first UE, a third indicator indicating that the IC information comprises the one or more shared parameters common to the downlink transmission and the uplink transmission, and wherein the one or more shared parameters comprises at least one of a shared RNTI, a shared DMRS, a shared MCS, or a shared scrambling sequence seed.