Transmitting uplink control information
In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided that may be configured to receive a downlink control message, to determine a beta offset value for transmitting UCI based at least in part on the downlink control message, and to transmit the UCI on an uplink shared channel interleaved with data based on the determined beta offset value. The apparatus may identify the beta offset from a set of values based on the downlink control message. An apparatus may identify resources allocated for PUSCH and may map UCI to the identified resources for PUSCH in a frequency interleaved manner over a bandwidth of the identified resources. The apparatus may map data to the identified resources in a time-first or frequency-first manner, and may transmit a signal comprising UCI and data on the identified resources of the PUSCH in accordance with the mapping.
1. A method of wireless communication, comprising:
receiving a beta offset indication in downlink control information (DCI) of a downlink control message, the beta offset indication dynamically indicating a beta offset value from a plurality of beta offset values available for an uplink shared channel transmission comprising data and uplink control information (UCI);
determining the beta offset value from the plurality of beta offset values for transmitting the UCI in the uplink shared channel transmission based at least in part on the beta offset indication, wherein the UCI comprises at least one of ACK/NACK information or channel state information (CSI);
identifying resources for the uplink shared channel transmission; and
transmitting, on the identified resources for the uplink shared channel transmission, the UCI interleaved with the data in a frequency-interleaved manner over a bandwidth of the identified resources based on the determined beta offset value.
2. The method of claim 1 , wherein the determining the beta offset value comprises:
receiving a set of beta offset values in a radio resource control (RRC) configuration and,
identifying the beta offset value from among the set of beta offset values in the RRC configuration based on the beta offset indication comprised in the DCI.
3. The method of claim 1 , wherein the beta offset value is based on a type of a waveform used for transmitting the UCI, wherein the type of the waveform comprises a single carrier frequency division multiplex (SC-FDM) waveform or an orthogonal frequency division multiplex (OFDM) waveform.
4. The method of claim 1 , wherein the UCI comprises the ACK/NACK information and channel quality information (CQI), and wherein the CQI is frequency interleaved on a different group of tones than the ACK/NACK information.
5. The method of claim 4 , wherein the ACK/NACK information is transmitted on a first set of symbols adjacent to a demodulation reference signal (DM-RS) symbol, and wherein a portion of the CSI comprising the CQI is transmitted on a second set of symbols different than the first set of symbols.
6. The method of claim 5 , wherein the DM-RS symbol is front loaded in the uplink shared channel transmission.
7. The method of claim 1 , wherein the uplink shared channel transmission comprises a single carrier waveform or an OFDM waveform.
8. The method of claim 1 , wherein the beta offset indication indicates different beta offset values corresponding to different types of UCI.
9. The method of claim 1 , wherein the DCI comprises an uplink grant of the identified resources for the uplink shared channel transmission.
10. An apparatus for wireless communication at a user equipment, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
receive a beta offset indication in downlink control information (DCI) of a downlink control message, the beta offset indication dynamically indicating a beta offset value from a plurality of beta offset values available for an uplink shared channel transmission comprising data and uplink control information (UCI);
determine the beta offset value from the plurality of beta offset values for transmitting the UCI in the uplink shared channel transmission based at least in part on the beta offset indication, wherein the UCI comprises at least one of ACK/NACK information or channel state information (CSI);
identify resources on an uplink shared channel for the uplink shared channel transmission; and
transmit, on the identified resources for the uplink shared channel transmission, the UCI interleaved with the data in a frequency-interleaved manner over a bandwidth of the identified resources based on the determined beta offset value.
11. The apparatus of claim 10 , wherein the at least one processor is further configured to:
receive a set of beta offset values in a radio resource control (RRC) configuration and,
determine the beta offset value from among the set of beta offset values in the RRC configuration based on the beta offset indication comprised in the DCI.
12. The apparatus of claim 10 , wherein the beta offset value is based on a type of a waveform used for transmitting the UCI, wherein the type of the waveform comprises a single carrier frequency division multiplex (SC-FDM) waveform or an orthogonal frequency division multiplex (OFDM) waveform.
13. The apparatus of claim 10 , wherein the UCI comprises the ACK/NACK information and channel quality information (CQI), and wherein the CQI is frequency interleaved on a different group of tones than the ACK/NACK information.
14. The apparatus of claim 13 , wherein the ACK/NACK information is transmitted on a first set of symbols adjacent to a demodulation reference signal (DM-RS) symbol, and wherein a portion of the CSI comprising the CQI is transmitted on a second set of symbols different than the first set of symbols.
15. The apparatus of claim 14 , wherein the DM-RS symbol is front loaded in the uplink shared channel transmission.
16. The apparatus of claim 10 , wherein the uplink shared channel transmission comprises a single carrier waveform or an OFDM waveform.
17. The apparatus of claim 10 , wherein the beta offset indication indicates different beta offset values corresponding to different types of UCI.
18. The apparatus of claim 10 , wherein the DCI comprises an uplink grant of the identified resources for the uplink shared channel transmission.