Channel state information and hybrid automatic repeat request feedback resource allocation in 5G

1. A method of wireless communication performed by a user equipment (UE) for uplink transmission in a slot, comprising:

mapping channel state information (CSI) to first resource elements that are distributed in frequency,

wherein the first resource elements are in a set of resources allocated on an uplink shared channel, and

wherein the first resource elements occupy a first symbol of the uplink shared channel;

mapping hybrid automatic repeat request (HARQ) feedback to second resource elements that are distributed in frequency,

wherein the second resource elements are in the set of resources,

wherein the second resource elements are reserved for the HARQ feedback and are different from the first resource elements,

wherein the first resource elements and the second resource elements are distributed in frequency based at least in part on adaptive step sizes,

wherein the adaptive step sizes are based at least in part on a quantity of symbols of the CSI being less than a quantity of subcarriers at the first symbol, and

wherein a demodulation reference signal (DMRS) is provided in a second symbol of the uplink shared channel, and the second resource elements occupy a set of symbols of the uplink shared channel that do not include the first symbol and the second symbol; and

transmitting the CSI and the HARQ feedback on the uplink shared channel in accordance with the mappings.

2. The method of claim 1 , wherein one or more resource elements comprising a phase-tracking reference signal are excluded from the first resource elements.

3. The method of claim 1 , wherein the adaptive step sizes are based at least in part on respective amounts of the CSI and the HARQ feedback.

4. The method of claim 1 , wherein mapping the CSI and mapping the HARQ feedback are performed in a frequency-first, time-second manner.

5. The method of claim 1 , wherein the second resource elements follow the DMRS in the slot.

6. The method of claim 1 , wherein the HARQ feedback punctures data symbols of the uplink shared channel.

7. The method of claim 1 , wherein rate matching is used for the CSI and the HARQ feedback.

8. The method of claim 1 , wherein the second resource elements are distributed in frequency and symbols according to a diagonal pattern.

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

a memory; and

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

map channel state information (CSI) to first resource elements that are distributed in frequency,

wherein the first resource elements are in a set of resources allocated on an uplink shared channel, and

wherein the first resource elements occupy a first symbol of the uplink shared channel;

map hybrid automatic repeat request (HARQ) feedback to second resource elements that are distributed in frequency,

wherein the second resource elements are in the set of resources;

wherein the second resource elements are reserved for the HARQ feedback and are different from the first resource elements,

wherein the first resource elements and the second resource elements are distributed in frequency based at least in part on adaptive step sizes,

wherein the adaptive step sizes are based at least in part on a quantity of symbols of the CSI being less than a quantity of subcarriers at the first symbol, and

wherein demodulation reference signal (DMRS) is provided in a second symbol of the uplink shared channel, and the second resource elements occupy a set of symbols of the uplink shared channel that do not include the first symbol and the second symbol; and

transmit the CSI and the HARQ feedback on the uplink shared channel in accordance with the mappings.

10. The UE of claim 9 , wherein one or more resource elements comprising a phase-tracking reference signal are excluded from the first resource elements.

11. The UE of claim 9 , wherein the adaptive step sizes are based at least in part on respective amounts of the CSI and the HARQ feedback.

12. The UE of claim 9 , wherein mapping the CSI and mapping the HARQ feedback are performed in a frequency-first, time-second manner.

13. The UE of claim 9 , wherein the second resource elements are mapped after a reference signal of the uplink shared channel.

14. The UE of claim 9 , wherein the HARQ feedback punctures data symbols of the uplink shared channel.

15. The UE of claim 9 , wherein rate matching is used for the CSI and the HARQ feedback.

16. The UE of claim 9 , wherein the second resource elements are distributed in frequency and symbols according to a diagonal pattern.

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

an encoder component to encode uplink control information (UCI) and an uplink shared channel to generate an encoded communication,

wherein the UCI includes at least one of channel state information (CSI) or hybrid automatic repeat request (HARQ) feedback;

a modulator component to modulate the encoded communication onto a carrier signal;

a UCI mapper component to map the UCI to resource elements of the uplink shared channel,

wherein the CSI is mapped to first resource elements of the resource elements,

wherein the HARQ feedback is mapped to second resource elements of the resource elements,

wherein the second resource elements are reserved for the HARQ feedback and are different from the first resource elements,

wherein the first resource elements occupy a first symbol of the uplink shared channel, a demodulation reference signal (DMRS) is provided in a second symbol of the uplink shared channel, and the second resource elements occupy a set of symbols of the uplink shared channel that do not include the first symbol and the second symbol,

wherein the first resource elements and the second resource elements are distributed in frequency based at least in part on adaptive step sizes, and

wherein the adaptive step sizes are based at least in part on a quantity of symbols of the CSI being less than a quantity of subcarriers at the first symbol;

a discrete Fourier transform (DFT) component to perform DFT spreading of the uplink shared channel;

a sub-band mapping component to map an output of the DFT spreading to sub-bands of an output signal;

an inverse fast Fourier transform (IFFT) component to perform an IFFT on the output signal; and

a transmitter component to transmit the output signal.

18. The UE of claim 17 , wherein the second resource elements are mapped after a reference signal of the uplink shared channel.

19. The UE of claim 17 , wherein the HARQ feedback punctures data symbols of the uplink shared channel.

20. The UE of claim 17 , wherein rate matching is used for the CSI and the HARQ feedback.

21. The UE of claim 17 , wherein one or more resource elements comprising a phase-tracking reference signal are excluded from the first resource elements.

22. The UE of claim 17 , wherein the adaptive step sizes are based at least in part on respective amounts of the CSI and the HARQ feedback.

23. The UE of claim 17 , wherein mapping the CSI and mapping the HARQ feedback are performed in a frequency-first, time-second manner.

24. The UE of claim 17 , wherein the second resource elements are distributed in frequency and symbols according to a diagonal pattern.

25. The UE of claim 17 , wherein the second resource elements follow the DMRS in a slot.

26. An apparatus for wireless communication, comprising:

means for mapping channel state information (CSI) to first resource elements that are distributed in frequency,

wherein the first resource elements are in a set of resources allocated on an uplink shared channel, and

wherein the first resource elements occupy a first symbol of the uplink shared channel;

means for mapping hybrid automatic repeat request (HARQ) feedback to second resource elements that are distributed in frequency,

wherein the second resource elements are in the set of resources;

wherein the second resource elements are reserved for the HARQ feedback and are different from the first resource elements,

wherein the first resource elements and the second resource elements are distributed in frequency based at least in part on adaptive step sizes,

wherein the adaptive step sizes are based at least in part on a quantity of symbols of the CSI being less than a quantity of subcarriers at the first symbol, and

wherein a demodulation reference signal (DMRS) is provided in a second symbol of the uplink shared channel, and the second resource elements occupy a set of symbols of the uplink shared channel that do not include the first symbol and the second symbol; and

means for transmitting the CSI and the HARQ feedback on the uplink shared channel in accordance with the mappings.

27. The apparatus of claim 26 , wherein one or more resource elements comprising a phase-tracking reference signal are excluded from the first resource elements.

28. The apparatus of claim 26 , wherein the adaptive step sizes are based at least in part on respective amounts of the CSI and the HARQ feedback.

29. The apparatus of claim 26 , wherein mapping the CSI and mapping the HARQ feedback are performed in a frequency-first, time-second manner.

30. The apparatus of claim 26 , wherein the second resource elements are mapped after a reference signal of the uplink shared channel.

31. The apparatus of claim 26 , wherein the HARQ feedback punctures data symbols of the uplink shared channel.

32. The apparatus of claim 26 , wherein rate matching is used for the CSI and the HARQ feedback.

33. The apparatus of claim 26 , wherein the second resource elements are distributed in frequency and symbols according to a diagonal pattern.

34. A non-transitory computer-readable medium storing one or more instructions for wireless communication, the one or more instructions comprising:

one or more instructions that, when executed by one or more processors of a user equipment, cause the user equipment to:

map channel state information (CSI) to first resource elements that are distributed in frequency,

wherein the first resource elements are in a set of resources allocated on an uplink shared channel, and

wherein the first resource elements occupy a first symbol of the uplink shared channel;

map hybrid automatic repeat request (HARQ) feedback to second resource elements that are distributed in frequency,

wherein the second resource elements are in the set of resources;

wherein the second resource elements are reserved for the HARQ feedback and are different from the first resource elements,

wherein the first resource elements and the second resource elements are distributed in frequency based at least in part on adaptive step sizes,

wherein the adaptive step sizes are based at least in part on a quantity of symbols of the CSI being less than a quantity of subcarriers at the first symbol, and

wherein a demodulation reference signal (DMRS) is provided in a second symbol of the uplink shared channel, and the second resource elements occupy a set of symbols of the uplink shared channel that do not include the first symbol and the second symbol; and

transmit the CSI and the HARQ feedback on the uplink shared channel in accordance with the mappings.

35. The non-transitory computer-readable medium of claim 34 , wherein one or more resource elements comprising a phase-tracking reference signal are excluded from the first resource elements.

36. The non-transitory computer-readable medium of claim 34 , wherein the adaptive step sizes are based at least in part on respective amounts of the CSI and the HARQ feedback.

37. The non-transitory computer-readable medium of claim 34 , wherein mapping the CSI and mapping the HARQ feedback are performed in a frequency-first, time-second manner.

38. The non-transitory computer-readable medium of claim 34 , wherein the second resource elements are mapped after a reference signal of the uplink shared channel.

39. The non-transitory computer-readable medium of claim 34 , wherein the HARQ feedback punctures data symbols of the uplink shared channel.

40. The non-transitory computer-readable medium of claim 34 , wherein rate matching is used for the CSI and the HARQ feedback.

41. The non-transitory computer-readable medium of claim 34 , wherein the second resource elements are distributed in frequency and symbols according to a diagonal pattern.