NARROW-BAND PHYSICAL CONTROL CHANNEL DESIGN

• US 20170201982A1
• Filed: 09/21/2016
• Published: 07/13/2017
• Est. Priority Date: 01/11/2016
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Gaal, Peter, Chen, Wanshi, Xu, Hao, Rico Alvarino, Alberto
• Granted Patent: US 11,109,372 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 27/261 Details of reference signals
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 4/70 Services for machine-to-machine communication [M2M] or machine type communication [MTC]
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/51 based on terminal or device properties

Abstract

Techniques are described for wireless communication. One method includes allocating, in a downlink carrier including a plurality of resource blocks, a first set of resource elements for cell-specific reference signals (CRS) associated with communication with one or more communication devices of a first type; allocating resources of a resource block of the plurality of resource blocks to a narrow-band physical channel for communication with one or more communication devices of a second type, the allocated resources being rate-matched around the first set of resource elements and a second set of resource elements allocated to narrow-band CRS (NB-CRS) associated with communication with the one or more communication devices of the second type; and transmitting information to the one or more communication devices of the second type mapped to a subset of the allocated resources of the narrow-band physical channel.

Claims

1. A method of communication at a base station, comprising:

allocating, in a downlink carrier comprising a plurality of resource blocks over a plurality of subframes, a first set of resource elements for cell-specific reference signals (CRS) associated with communication with one or more communication devices of a first type;

allocating resources of a resource block of the plurality of resource blocks to a narrow-band physical channel for communication with one or more communication devices of a second type, the allocated resources being rate-matched around the first set of resource elements and a second set of resource elements allocated to narrow-band CRS (NB-CRS) associated with communication with the one or more communication devices of the second type; and

transmitting information to the one or more communication devices of the second type mapped to a subset of the allocated resources of the narrow-band physical channel.

2. The method of claim 1, further comprising:

determining to rate-match the allocated resources around the first set of resource elements and the second set of resource elements based on a deployment mode of the narrow-band physical channel.

3. The method of claim 2, wherein the deployment mode comprises an in-band deployment mode.

4. The method of claim 1, wherein the transmitting the information to the one or more communication devices of the second type comprises transmitting the information to the one or more communication devices of the second type based on a predetermined transmission mode, and wherein the predetermined transmission mode comprises transmit diversity based on a space frequency block code (SFBC).

5. The method of claim 1, wherein the allocating the resources of the resource block comprises allocating a first set of frequency resources of the resource block for communication with a first device of the second type and allocating a second set of frequency resources of the resource block for communication with a second device of the second type.

6. The method of claim 1, wherein the subset of the allocated resources comprises a first subset of a plurality of subsets of the allocated resources associated with an aggregation level.

7. The method of claim 1, wherein the subset of the allocated resources spans first and second subsets of the allocated resources that are associated with an aggregation level.

8. The method of claim 1, wherein the allocated resources comprise a plurality of resource element groups.

9. The method of claim 8, wherein the plurality of resource element groups are rate matched around the first set of resource elements and the second set of resource elements.

10. A method of communication at a user equipment (UE), comprising:

determining a deployment mode of a narrow-band physical channel;

receiving information mapped to a subset of resources allocated to the narrow-band physical channel;

determining a rate matching configuration associated with the subset of resources allocated to the narrow-band physical channel based at least in part on the deployment mode;

decoding the received information based at least in part on the rate matching configuration.

11. The method of claim 10, wherein the deployment mode comprises an in-band deployment mode.

12. The method of claim 11, wherein the subset of resources allocated to the narrow-band physical channel are rate-matched around a first set of resource elements allocated to cell-specific reference signals (CRS) and a second set of resource elements allocated to narrow-band CRS (NB-CRS).

13. The method of claim 10, wherein the deployment mode comprises a standalone deployment mode or a guard band deployment mode.

14. The method of claim 13, wherein the subset of resources allocated to the narrow-band physical channel are rate-matched around a set of resource elements allocated to narrow-band cell-specific reference signals (NB-CRS).

15. The method of claim 10, wherein the subset of resources comprises a first subset of a plurality of subsets of the resources allocated to the narrow-band physical channel associated with an aggregation level.

16. The method of claim 10, wherein the subset of resources spans first and second subsets of the resources allocated to the narrow-band physical channel that are associated with an aggregation level.

17. The method of claim 10, wherein the allocated resources comprise a plurality of resource element groups.

18. The method of claim 17, wherein the plurality of resource element groups are rate-matched around a set of resource elements allocated to narrow-band cell-specific reference signals (NB-CRS).

19. A method of communication at a wireless device, comprising:

receiving a narrow-band physical control channel; and

identifying, in the narrow-band physical control channel, a data transmission comprising a first data header and a data payload mapped to a set of resources of the narrow-band physical control channel having a same size as at least one format for control channel transmissions over the narrow-band physical control channel.

20. The method of claim 19, wherein the first data header has a different size than a second data header for transmissions of data via a narrow-band data channel allocated by control transmissions in the narrow-band physical control channel.

21. The method of claim 19, wherein the data transmission is identified by descrambling a cyclic redundancy check value of a decoded control transmission candidate with a data identifier.

22. The method of claim 19, wherein the data transmission is identified by performing a cyclic redundancy check for a decoded control transmission candidate with a cyclic redundancy check value having a different length than for identifying the at least one format for control channel transmissions.

23. The method of claim 19, wherein the set of resources comprises a plurality of resource element groups.

24. An apparatus for wireless communication, comprising:

means for allocating, in a downlink carrier comprising a plurality of resource blocks over a plurality of subframes, a first set of resource elements for cell-specific reference signals (CRS) associated with communication with one or more communication devices of a first type;

means for allocating resources of a resource block of the plurality of resource blocks to a narrow-band physical channel for communication with one or more communication devices of a second type, the allocated resources being rate-matched around the first set of resource elements and a second set of resource elements allocated to narrow-band CRS (NB-CRS) associated with communication with the one or more communication devices of the second type; and

means for transmitting information to the one or more communication devices of the second type mapped to a subset of the allocated resources of the narrow-band physical channel.

25. The apparatus of claim 24, further comprising:

means for determining to rate-match the allocated resources around the first set of resource elements and the second set of resource elements based on a deployment mode of the narrow-band physical channel.

26. The apparatus of claim 25, wherein the deployment mode comprises an in-band deployment mode.

27. The apparatus of claim 24, wherein the means for transmitting the information to the one or more communication devices of the second type comprises means for transmitting the information to the one or more communication devices of the second type based on a predetermined transmission mode, and wherein the predetermined transmission mode comprises transmit diversity based on a space frequency block code (SFBC).

28. The apparatus of claim 24, wherein the means for allocating the resources of the resource block comprises means for allocating a first set of frequency resources of the resource block for communication with a first device of the second type and means for allocating a second set of frequency resources of the resource block for communication with a second device of the second type.

29. The apparatus of claim 24, wherein the subset of the allocated resources comprises a first subset of a plurality of subsets of the allocated resources associated with an aggregation level.

30. The apparatus of claim 24, wherein the subset of the allocated resources spans first and second subsets of the allocated resources that are associated with an aggregation level.

31. The apparatus of claim 24, wherein the allocated resources comprise a plurality of resource element groups.

32. An apparatus for wireless communication, comprising:

means for determining a deployment mode of a narrow-band physical channel;

means for receiving information mapped to a subset of resources allocated to the narrow-band physical channel;

means for determining a rate matching configuration associated with the subset of resources allocated to the narrow-band physical channel based at least in part on the deployment mode; and

means for decoding the received information based at least in part on the rate matching configuration.

33. The apparatus of claim 32, wherein the deployment mode comprises an in-band deployment mode.

34. The apparatus of claim 33, wherein the subset of resources allocated to the narrow-band physical channel are rate-matched around a first set of resource elements allocated to cell-specific reference signals (CRS) and a second set of resource elements allocated to narrow-band CRS (NB-CRS).

35. The apparatus of claim 32, wherein the deployment mode comprises a standalone deployment mode or a guard band deployment mode.

36. The apparatus of claim 35, wherein the subset of resources allocated to the narrow-band physical channel are rate-matched around a set of resource elements allocated to narrow-band cell-specific reference signals (NB-CRS).

37. The apparatus of claim 32, wherein the subset of resources comprises a first subset of a plurality of subsets of the resources allocated to the narrow-band physical channel associated with an aggregation level.

38. The apparatus of claim 32, wherein the subset of resources spans first and second subsets of the resources allocated to the narrow-band physical channel that are associated with an aggregation level.

39. The apparatus of claim 32, wherein the allocated resources comprise a plurality of resource element groups.

40. An apparatus for wireless communication, comprising:

means for receiving a narrow-band physical control channel; and

means for identifying, in the narrow-band physical control channel, a data transmission comprising a first data header and a data payload mapped to a set of resources of the narrow-band physical control channel having a same size as at least one format for control channel transmissions over the narrow-band physical control channel.

41. The apparatus of claim 40, wherein the first data header has a different size than a second data header for transmissions of data via a narrow-band data channel allocated by control transmissions in the narrow-band physical control channel.

42. The apparatus of claim 40, wherein the data transmission is identified by descrambling a cyclic redundancy check value of a decoded control transmission candidate with a data identifier.

43. The apparatus of claim 40, wherein the data transmission is identified by performing a cyclic redundancy check for a decoded control transmission candidate with a cyclic redundancy check value having a different length than for identifying the at least one format for control channel transmissions.

44. The apparatus of claim 40, wherein the set of resources comprises a plurality of resource element groups.

45. An apparatus for wireless communication, in a system comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to;

allocate, in a downlink carrier comprising a plurality of resource blocks over a plurality of subframes, a first set of resource elements for cell-specific reference signals (CRS) associated with communication with one or more communication devices of a first type;

allocate resources of a resource block of the plurality of resource blocks to a narrow-band physical channel for communication with one or more communication devices of a second type, the allocated resources being rate-matched around the first set of resource elements and a second set of resource elements allocated to narrow-band CRS (NB-CRS) associated with communication with the one or more communication devices of the second type; and

transmit information to the one or more communication devices of the second type mapped to a subset of the allocated resources of the narrow-band physical channel.

46. The apparatus of claim 45, wherein the instructions are executable by the processor to cause the apparatus to:

determine to rate-match the allocated resources around the first set of resource elements and the second set of resource elements based on a deployment mode of the narrow-band physical channel.

47. The apparatus of claim 46, wherein the deployment mode comprises an in-band deployment mode.

48. The apparatus of claim 45, wherein the instructions are executable by the processor to cause the apparatus to:

transmit the information to the one or more communication devices of the second type based on a predetermined transmission mode, wherein the predetermined transmission mode comprises transmit diversity based on a space frequency block code (SFBC).

49. The apparatus of claim 45, wherein the instructions are executable by the processor to cause the apparatus to:

allocate a first set of frequency resources of the resource block for communication with a first device of the second type and allocate a second set of frequency resources of the resource block for communication with a second device of the second type.

50. The apparatus of claim 45, wherein the subset of the allocated resources comprises a first subset of a plurality of subsets of the allocated resources associated with an aggregation level.

51. The apparatus of claim 45, wherein the subset of the allocated resources spans first and second subsets of the allocated resources that are associated with an aggregation level.

52. The apparatus of claim 45, wherein the allocated resources comprise a plurality of resource element groups.

53. An apparatus for wireless communication, in a system comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to;

determine a deployment mode of a narrow-band physical channel;

receive information mapped to a subset of resources allocated to the narrow-band physical channel;

determine a rate matching configuration associated with the subset of resources allocated to the narrow-band physical channel based at least in part on the deployment mode; and

decode the received information based at least in part on the rate matching configuration.

54. The apparatus of claim 53, wherein the deployment mode comprises an in-band deployment mode.

55. The apparatus of claim 54, wherein the subset of resources allocated to the narrow-band physical channel are rate-matched around a first set of resource elements allocated to cell-specific reference signals (CRS) and a second set of resource elements allocated to narrow-band CRS (NB-CRS).

56. The apparatus of claim 53, wherein the deployment mode comprises a standalone deployment mode or a guard band deployment mode.

57. The apparatus of claim 56, wherein the subset of resources allocated to the narrow-band physical channel are rate-matched around a set of resource elements allocated to narrow-band cell-specific reference signals (NB-CRS).

58. The apparatus of claim 53, wherein the subset of resources comprises a first subset of a plurality of subsets of the resources allocated to the narrow-band physical channel associated with an aggregation level.

59. The apparatus of claim 53, wherein the subset of resources spans first and second subsets of the resources allocated to the narrow-band physical channel that are associated with an aggregation level.

60. The apparatus of claim 53, wherein the allocated resources comprise a plurality of resource element groups.

61. An apparatus for wireless communication, in a system comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the apparatus to;

receive a narrow-band physical control channel; and

identify, in the narrow-band physical control channel, a data transmission comprising a first data header and a data payload mapped to a set of resources of the narrow-band physical control channel having a same size as at least one format for control channel transmissions over the narrow-band physical control channel.

62. The apparatus of claim 61, wherein the first data header has a different size than a second data header for transmissions of data via a narrow-band data channel allocated by control transmissions in the narrow-band physical control channel.

63. The apparatus of claim 61, wherein the data transmission is identified by descrambling a cyclic redundancy check value of a decoded control transmission candidate with a data identifier.

64. The apparatus of claim 61, wherein the data transmission is identified by performing a cyclic redundancy check for a decoded control transmission candidate with a cyclic redundancy check value having a different length than for identifying the at least one format for control channel transmissions.

65. The apparatus of claim 61, wherein the set of resources comprises a plurality of resource element groups.

66. A non-transitory computer readable medium storing code for wireless communication, the code comprising instructions executable by a processor to:

allocate, in a downlink carrier comprising a plurality of resource blocks over a plurality of subframes, a first set of resource elements for cell-specific reference signals (CRS) associated with communication with one or more communication devices of a first type;

allocate resources of a resource block of the plurality of resource blocks to a narrow-band physical channel for communication with one or more communication devices of a second type, the allocated resources being rate-matched around the first set of resource elements and a second set of resource elements allocated to narrow-band CRS (NB-CRS) associated with communication with the one or more communication devices of the second type; and

transmit information to the one or more communication devices of the second type mapped to a subset of the allocated resources of the narrow-band physical channel.

67. A non-transitory computer readable medium storing code for wireless communication, the code comprising instructions executable by a processor to:

determine a deployment mode of a narrow-band physical channel;

receive information mapped to a subset of resources allocated to the narrow-band physical channel;

determine a rate matching configuration associated with the subset of resources allocated to the narrow-band physical channel based at least in part on the deployment mode; and

decode the received information based at least in part on the rate matching configuration.

68. A non-transitory computer readable medium storing code for wireless communication, the code comprising instructions executable by a processor to:

receive a narrow-band physical control channel; and

identify, in the narrow-band physical control channel, a data transmission comprising a first data header and a data payload mapped to a set of resources of the narrow-band physical control channel having a same size as at least one format for control channel transmissions over the narrow-band physical control channel.