TECHNIQUES AND APPARATUSES FOR MULTIPLEXING SCHEMES FOR MILLIMETER WAVE DOWNLINK SINGLE CARRIER WAVEFORMS

• US 20190020528A1
• Filed: 07/09/2018
• Published: 01/17/2019
• Est. Priority Date: 07/12/2017
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: LEI, Jing, SUN, Jing, KADOUS, Tamer
• Granted Patent: US 10,673,674 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 10/90 Non-optical transmission systems, e.g. transmission systems employing non-photonic corpuscular radiation
• CPC Class Codes: H04B 7/0408 using two or more beams, i.e. beam diversity
• CPC Class Codes: H04B 7/0452 Multi-user MIMO systems
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/10 Polarisation diversity; Directional diversity
• CPC Class Codes: H04J 14/06 Polarisation multiplex systems
• CPC Class Codes: H04J 3/02 Details electronic switching or gating H03K17/00
• CPC Class Codes: H04L 27/2636 with FFT or DFT modulators, e.g. standard single-carrier frequency-division multiple access [SC-FDMA] transmitter or DFT spread orthogonal frequency division multiplexing [DFT-SOFDM]
• CPC Class Codes: H04L 27/3488 Multiresolution systems
• CPC Class Codes: H04L 27/361 Modulation using a single or unspecified number of carriers, e.g. with separate stages of phase and amplitude modulation
• CPC Class Codes: H04L 27/362 Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated H04L27/366 takes precedence
• CPC Class Codes: H04L 27/38 Demodulator circuits; Receiver circuits
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04W 16/28 using beam steering
• CPC Class Codes: H04W 72/046 the resource being in the space domain, e.g. beams

Abstract

Certain aspects of the present disclosure generally relate to wireless communication. More particularly, aspects of the present disclosure provide multiplexing schemes which may be suited for the single carrier waveform. For example, some techniques and apparatuses described herein permit multiplexing of multiple, different data streams without destroying the single-carrier properties of the waveform. Additionally, or alternatively, some techniques and apparatuses described herein may provide unequal error protection, unequal bandwidth allocation, and/or the like as part of the multiplexing schemes. Examples of multiplexing schemes described herein include in-phase/quadrature (I/Q) multiplexing, superposition quadrature amplitude modulation (QAM) based at least in part on layered bit mapping, polarization division multiplexing of QAM with superposition coding, and frequency division multiplexing using UE-specific beams.

Claims

1. A method of wireless communication performed by a transmitter device, comprising:

receiving a plurality of data streams;

mapping sets of data streams, of the plurality of data streams, to respective sets of bit layers of a plurality of bit layers,

wherein each bit layer, of the plurality of bit layers, corresponds to a binary expansion value that is generated based at least in part on a quadrature amplitude modulation (QAM) constellation; and

transmitting a signal including the plurality of bit layers.

2. The method of claim 1, wherein the plurality of bit layers is associated with a plurality of corresponding transmission power levels, and wherein the respective sets of bit layers are assigned to one or more entities based at least in part on corresponding transmission power levels, of the plurality of corresponding transmission power levels, associated with the respective sets of bit layers.

3. The method of claim 1, further comprising:

assigning the respective sets of bit layers to one or more entities associated with the plurality of data streams.

4. The method of claim 3, wherein the respective sets of bit layers are assigned based at least in part on channel feedback associated with the one or more entities.

5. The method of claim 4, wherein the respective sets of bit layers are assigned based at least in part on one or more quality of service requirements associated with the one or more entities.

6. The method of claim 3, wherein the respective sets of bit layers are associated with respective reliability levels and the respective sets of bit layers are assigned based at least in part on the respective reliability levels.

7. The method of claim 3, wherein the respective sets of bit layers are assigned based at least in part on a utility function or a throughput maximization function.

8. The method of claim 3, wherein the respective sets of bit layers are assigned based at least in part on an error protection requirement or a priority class associated with at least one of the one or more entities.

9. The method of claim 8, wherein the transmitter device is configured to determine at least one channel coding level for at least one data stream, of the plurality of data streams, based at least in part on the error protection requirement or the priority class.

10. The method of claim 1, wherein a particular bit layer, associated with a highest reliability level or transmission power level, is assigned for a particular data stream, of the plurality of data streams, associated with control data.

11. The method of claim 3, wherein a first set of bit layers, of the plurality of bit layers, is assigned to a first user equipment and a second set of bit layers, of the plurality of bit layers, is assigned to a second user equipment,

wherein the first set of bit layers has a different quantity of bit layers than the second set of bit layers.

12. A method of wireless communication performed by a recipient device, comprising:

receiving a signal including a plurality of bit layers,

wherein the plurality of bit layers is generated based at least in part on a quadrature amplitude modulation (QAM) constellation;

identifying at least one relevant bit layer, of the plurality of bit layers, that is relevant to the recipient device; and

determining a data stream based at least in part on the at least one relevant bit layer.

13. The method of claim 12, wherein the at least one relevant bit layer is identified based at least in part on a transmission power level of the at least one relevant bit layer.

14. The method of claim 12, wherein the at least one relevant bit layer includes at least two bit layers that are not adjacent to each other.

15. The method of claim 12, wherein the at least one bit layer is assigned based at least in part on a quality of service requirement, a priority class, or an error protection requirement of the recipient device.

16. A transmitter device for wireless communication, comprising:

a memory; and

one or more processors operatively coupled to the memory, the memory and the one or more processors configured to;

receive a plurality of data streams;

map sets of data streams, of the plurality of data streams, to respective sets of bit layers of a plurality of bit layers,

wherein each bit layer, of the plurality of bit layers, corresponds to a binary expansion value that is generated based at least in part on a quadrature amplitude modulation (QAM) constellation; and

transmit a signal including the plurality of bit layers.

17. The transmitter device of claim 16, wherein the plurality of bit layers is associated with a plurality of corresponding transmission power levels, and wherein the respective sets of bit layers are assigned to one or more entities based at least in part on corresponding transmission power levels, of the plurality of corresponding transmission power levels, associated with the respective sets of bit layers.

18. The transmitter device of claim 16, wherein the one or more processors are further configured to:

assign the respective sets of bit layers to one or more entities associated with the plurality of data streams.

19. The transmitter device of claim 18, wherein the respective sets of bit layers are assigned based at least in part on channel feedback associated with the one or more entities.

20. The transmitter device of claim 19, wherein the respective sets of bit layers are assigned based at least in part on one or more quality of service requirements associated with the one or more entities.

21. The transmitter device of claim 18, wherein the respective sets of bit layers are associated with respective reliability levels and the respective sets of bit layers are assigned based at least in part on the respective reliability levels.

22. The transmitter device of claim 18, wherein the respective sets of bit layers are assigned based at least in part on a utility function or a throughput maximization function.

23. The transmitter device of claim 18, wherein the respective sets of bit layers are assigned based at least in part on an error protection requirement or a priority class associated with at least one of the one or more entities.

24. The transmitter device of claim 23, wherein the transmitter device is configured to determine at least one channel coding level for at least one data stream, of the plurality of data streams, based at least in part on the error protection requirement or the priority class.

25. The transmitter device of claim 16, wherein a particular bit layer, associated with a highest reliability level or transmission power level, is assigned for a particular data stream, of the plurality of data streams, associated with control data.

26. The transmitter device of claim 18, wherein a first set of bit layers, of the plurality of bit layers, is assigned to a first recipient device and a second set of bit layers, of the plurality of bit layers, is assigned to a recipient device,

wherein the first set of bit layers has a different quantity of bit layers than the second set of bit layers.

27. A recipient device for wireless communication, comprising:

a memory; and

one or more processors operatively coupled to the memory, the memory and the one or more processors configured to;

receive a signal including a plurality of bit layers,

wherein the plurality of bit layers is generated based at least in part on a quadrature amplitude modulation (QAM) constellation;

identify at least one relevant bit layer, of the plurality of bit layers, that is relevant to the recipient device; and

determine a data stream based at least in part on the at least one relevant bit layer.

28. The recipient device of claim 27, wherein the at least one relevant bit layer is identified based at least in part on a transmission power level of the at least one relevant bit layer.

29. The recipient device of claim 27, wherein the at least one relevant bit layer includes at least two bit layers that are not adjacent to each other.

30. The recipient device of claim 27, wherein the at least one bit layer is assigned based at least in part on a quality of service requirement, a priority class, or an error protection requirement of the recipient device.

31. 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 transmitter device, cause the one or more processors to;

receive a plurality of data streams;

map sets of data streams, of the plurality of data streams, to respective sets of bit layers of a plurality of bit layers,

wherein each bit layer, of the plurality of bit layers, corresponds to a binary expansion value that is generated based at least in part on a quadrature amplitude modulation (QAM) constellation; and

transmit a signal including the plurality of bit layers.

32. The non-transitory computer-readable medium of claim 31, wherein the plurality of bit layers is associated with a plurality of corresponding transmission power levels, and wherein the respective sets of bit layers are assigned to one or more entities based at least in part on corresponding transmission power levels, of the plurality of corresponding transmission power levels, associated with the respective sets of bit layers.

33. The non-transitory computer-readable medium of claim 31, wherein the one or more instructions, when executed by the one or more processors, further cause the one or more processors to:

assign the respective sets of bit layers to one or more entities associated with the plurality of data streams.

34. The non-transitory computer-readable medium of claim 33, wherein the respective sets of bit layers are assigned based at least in part on channel feedback associated with the one or more entities.

35. The non-transitory computer-readable medium of claim 34, wherein the respective sets of bit layers are assigned based at least in part on one or more quality of service requirements associated with the one or more entities.

36. The non-transitory computer-readable medium of claim 33, wherein the respective sets of bit layers are associated with respective reliability levels and the respective sets of bit layers are assigned based at least in part on the respective reliability levels.

37. The non-transitory computer-readable medium of claim 33, wherein the respective sets of bit layers are assigned based at least in part on a utility function or a throughput maximization function.

38. The non-transitory computer-readable medium of claim 33, wherein the respective sets of bit layers are assigned based at least in part on an error protection requirement or a priority class associated with at least one of the one or more entities.

39. The non-transitory computer-readable medium of claim 38, wherein the transmitter device is configured to determine at least one channel coding level for at least one data stream, of the plurality of data streams, based at least in part on the error protection requirement or the priority class.

40. The non-transitory computer-readable medium of claim 31, wherein a particular bit layer, associated with a highest reliability level or transmission power level, is assigned for a particular data stream, of the plurality of data streams, associated with control data.

41. The non-transitory computer-readable medium of claim 33, wherein a first set of bit layers, of the plurality of bit layers, is assigned to a first receiver device and a second set of bit layers, of the plurality of bit layers, is assigned to a second receiver device,

wherein the first set of bit layers has a different quantity of bit layers than the second set of bit layers.

42. 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 recipient device, cause the one or more processors to;

receive a signal including a plurality of bit layers,

wherein the plurality of bit layers is generated based at least in part on a quadrature amplitude modulation (QAM) constellation;

identify at least one relevant bit layer, of the plurality of bit layers, that is relevant to the recipient device; and

determine a data stream based at least in part on the at least one relevant bit layer.

43. The non-transitory computer-readable medium of claim 42, wherein the at least one relevant bit layer is identified based at least in part on a transmission power level of the at least one relevant bit layer.

44. The non-transitory computer-readable medium of claim 42, wherein the at least one relevant bit layer includes at least two bit layers that are not adjacent to each other.

45. The non-transitory computer-readable medium of claim 42, wherein the at least one bit layer is assigned based at least in part on a quality of service requirement, a priority class, or an error protection requirement of the recipient device.

46. An apparatus for wireless communication, comprising:

means for receiving a plurality of data streams;

means for mapping sets of data streams, of the plurality of data streams, to respective sets of bit layers of a plurality of bit layers,

wherein each bit layer, of the plurality of bit layers, corresponds to a binary expansion value that is generated based at least in part on a quadrature amplitude modulation (QAM) constellation; and

means for transmitting a signal including the plurality of bit layers.

47. The apparatus of claim 46, wherein the plurality of bit layers is associated with a plurality of corresponding transmission power levels, and wherein the respective sets of bit layers are assigned to one or more entities based at least in part on corresponding transmission power levels, of the plurality of corresponding transmission power levels, associated with the respective sets of bit layers.

48. The apparatus of claim 46, further comprising:

means for assigning the respective sets of bit layers to one or more entities associated with the plurality of data streams.

49. The apparatus of claim 48, wherein the respective sets of bit layers are assigned based at least in part on channel feedback associated with the one or more entities.

50. The apparatus of claim 49, wherein the respective sets of bit layers are assigned based at least in part on one or more quality of service requirements associated with the one or more entities.

51. The apparatus of claim 48, wherein the respective sets of bit layers are associated with respective reliability levels and the respective sets of bit layers are assigned based at least in part on the respective reliability levels.

52. The apparatus of claim 48, wherein the respective sets of bit layers are assigned based at least in part on a utility function or a throughput maximization function.

53. The apparatus of claim 48, wherein the respective sets of bit layers are assigned based at least in part on an error protection requirement or a priority class associated with at least one of the one or more entities.

54. The apparatus of claim 53, wherein the apparatus is configured to determine at least one channel coding level for at least one data stream, of the plurality of data streams, based at least in part on the error protection requirement or the priority class.

55. The apparatus of claim 46, wherein a particular bit layer, associated with a highest reliability level or transmission power level, is assigned for a particular data stream, of the plurality of data streams, associated with control data.

56. The apparatus of claim 48, wherein a first set of bit layers, of the plurality of bit layers, is assigned to a first recipient device and a second set of bit layers, of the plurality of bit layers, is assigned to a second recipient device,

wherein the first set of bit layers has a different quantity of bit layers than the second set of bit layers.

57. An apparatus for wireless communication, comprising:

means for receiving a signal including a plurality of bit layers,

wherein the plurality of bit layers is generated based at least in part on a quadrature amplitude modulation (QAM) constellation;

means for identifying at least one relevant bit layer, of the plurality of bit layers, that is relevant to the apparatus; and

means for determining a data stream based at least in part on the at least one relevant bit layer.

58. The apparatus of claim 57, wherein the at least one relevant bit layer is identified based at least in part on a transmission power level of the at least one relevant bit layer.

59. The apparatus of claim 57, wherein the at least one relevant bit layer includes at least two bit layers that are not adjacent to each other.

60. The apparatus of claim 57, wherein the at least one bit layer is assigned based at least in part on a quality of service requirement, a priority class, or an error protection requirement of the apparatus.