Control transmission soft combining

Patent metadata

Field	Value
Publication number	US-10873424-B2
Application number	US-201916389773-A
Country	US
Kind code	B2
Filing date	Apr 19, 2019
Priority date	Aug 31, 2016
Publication date	Dec 22, 2020
Grant date	Dec 22, 2020

Abstract

Techniques are described for wireless communication. One method of wireless communication includes buffering a first set of coded bits including a first control message having a plurality of fields, buffering a second set of coded bits including a second control message having the plurality of fields, soft combining at least a first subset of the first set of coded bits and a second subset of the second set of coded bits in a combined set of coded bits, and decoding the first control message or the second control message based at least in part on the combined set of coded bits.

First claim

What is claimed is:

1. A method for wireless communication at a receiving device, comprising:
buffering a first control message comprising a first set of coded bits, wherein the first control message is included in a first search space;
buffering a second control message comprising a second set of coded bits, wherein the second control message is included in a second search space that is associated with a deterministic function relative to the first search space;
performing a first blind decoding of a first resource allocation included in the first search space;
performing, based at least in part on the deterministic function, a second blind decoding of a second resource allocation included in the second search space;
soft combining the first set of coded bits and the second set of coded bits in a combined set of coded bits based at least in part on the first blind decoding and the second blind decoding; and
decoding at least one of the first control message or the second control message based at least in part on the combined set of coded bits.

2. The method of claim 1 , wherein the deterministic function comprises a one-to-one relation between the first blind decoding and the second blind decoding.

3. The method of claim 1 , further comprising:
determining, based at least in part on the first blind decoding, that the first resource allocation is associated with the first set of coded bits; and
determining, based at least in part on the deterministic function, that the second resource allocation is associated with the second set of coded bits, wherein the second resource allocation is relative to the first resource allocation.

4. The method of claim 3 , wherein the deterministic function comprises a one-to-one relation between the first resource allocation and the second resource allocation.

5. The method of claim 3 , wherein the first resource allocation comprises a first control channel element and the second resource allocation comprises a second control channel element.

6. The method of claim 1 , further comprising:
buffering the first search space based at least in part on an attempted decoding of the first set of coded bits, wherein buffering the first search space comprises buffering the first control message.

7. The method of claim 1 , further comprising:
identifying a deterministic rule configured at the receiving device, wherein the deterministic rule comprises the deterministic function.

8. The method of claim 1 , wherein the first search space is included in a control region of a first transmission time interval, and wherein the second search space is included in a control region of a second transmission time interval.

9. The method of claim 8 , wherein the first transmission time interval comprises a first slot of a subframe and the second transmission time interval comprises a second slot of the subframe.

10. The method of claim 1 , wherein the first search space is included in a control region of a first subframe, and wherein the second search space is included in a control region of a second subframe.

11. The method of claim 1 , wherein the second control message corresponds to a retransmission of the first control message.

12. An apparatus for wireless communication at a receiving device, comprising:
a processor,
memory coupled with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
buffer a first control message comprising a first set of coded bits, wherein the first control message is included in a first search space;
buffer a second control message comprising a second set of coded bits, wherein the second control message is included in a second search space that is associated with a deterministic function relative to the first search space;
perform a first blind decoding of a first resource allocation included in the first search space;
perform, based at least in part on the deterministic function, a second blind decoding of a second resource allocation included in the second search space;
soft combine the first set of coded bits and the second set of coded bits in a combined set of coded bits based at least in part on the first blind decoding and the second blind decoding; and
decode at least one of the first control message or the second control message based at least in part on the combined set of coded bits.

13. The apparatus of claim 12 , wherein the deterministic function comprises a one-to-one relation between the first blind decoding and the second blind decoding.

14. The apparatus of claim 12 , wherein the instructions are further executable by the processor to cause the apparatus to:
determine, based at least in part on the first blind decoding, that the first resource allocation is associated with the first set of coded bits; and
determine, based at least in part on the deterministic function, that the second resource allocation is associated with the second set of coded bits, wherein the second resource allocation is relative to the first resource allocation.

15. The apparatus of claim 14 , wherein the deterministic function comprises a one-to-one relation between the first resource allocation and the second resource allocation.

16. The apparatus of claim 14 , wherein the first resource allocation comprises a first control channel element and the second resource allocation comprises a second control channel element.

17. The apparatus of claim 12 , wherein the instructions are further executable by the processor to cause the apparatus to:
the instructions to buffer the first search space based at least in part on an attempted decoding of the first set of coded bits, wherein buffering the first search space are executable by the processor to cause the apparatus to buffer the first control message.

18. The apparatus of claim 12 , wherein the instructions are further executable by the processor to cause the apparatus to:
identify a deterministic rule configured at the receiving device, wherein the deterministic rule comprises the deterministic function.

19. The apparatus of claim 12 , wherein the first search space is included in a control region of a first transmission time interval, and wherein the second search space is included in a control region of a second transmission time interval.

20. The apparatus of claim 19 , wherein the first transmission time interval comprises a first slot of a subframe and the second transmission time interval comprises a second slot of the subframe.

21. The apparatus of claim 12 , wherein the first search space is included in a control region of a first subframe, and wherein the second search space is included in a control region of a second subframe.

22. The apparatus of claim 12 , wherein the second control message corresponds to a retransmission of the first control message.

23. A non-transitory computer-readable medium storing code for wireless communication at a receiving device, the code comprising instructions executable by a processor to:
buffer a first control message comprising a first set of coded bits, wherein the first control message is included in a first search space;
buffer a second control message comprising a second set of coded bits, wherein the second control message is included in a second search space that is associated with a deterministic function relative to the first search space;
perform a first blind decoding of a first resource allocation included in the first search space;

Assignees

• Qualcomm Inc

Inventors

• Yang Yang
• Lin Jamie Menjay
• Jiang Jing
• Sarkis Gabi
• Ji Tingfang

Classifications

• H04W72/563

  of the wireless resources · CPC title

• H04L1/007

  Unequal error protection (for format H04L1/0078; for codes per se H03M13/35) · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title

• H04L1/1819

  with retransmission of additional or different redundancy · CPC title

• H04L1/1845 Primary

  Combining techniques, e.g. code combining · CPC title