Interlaced sidelink data for communication
Aspects of the disclosure relate to a user equipment (UE) for establishing a sidelink communication channel and receive mapped channel state information-reference signals (CSI-RS) over a plurality of PSSCH resource blocks. The mapped CSI-RS may be interlaced with resource elements in at least a portion of the plurality of PSSCH resource blocks. The CSI-RS received over the plurality of PSSCH blocks is then processed to determine a channel quality of the sidelink channel from the portion of the plurality of PSSCH resource blocks including the mapped CSI-RS.
1. A method for wireless communication at a user equipment (UE), comprising:
establishing communication over a sidelink channel;
receiving mapped channel state information-reference signals (CSI-RS) over a plurality of physical sidelink shared channel (PSSCH) resource blocks, wherein the mapped CSI-RS are interlaced with resource elements in at least a portion of the plurality of PSSCH resource blocks;
processing the mapped CSI-RS received over the plurality of PSSCH resource blocks;
determining from the processing a channel quality of the sidelink channel from the portion of the plurality of PSSCH resource blocks comprising the mapped CSI-RS; and
configuring one or more sidelink communication parameters based on the determined channel quality.
2. The method of claim 1 , wherein the mapped CSI-RS is interlaced with the resource elements via one of a comb-6, comb-4, comb-3, comb-2 or comb-1 structure.
3. The method of claim 1 , wherein processing the CSI-RS received over the plurality of PSSCH resource blocks comprises code division multiplexing (CDM) in two contiguous combs.
4. The method of claim 1 , wherein processing the CSI-RS received over the plurality of PSSCH resource blocks comprises applying orthogonal cover code (OCC) in at least one of a frequency domain and/or a time domain.
5. The method of claim 1 , wherein the mapped CSI-RS are mapped over one or two ports.
6. The method of claim 1 , wherein the mapped CSI-RS are mapped to adjacent symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
7. The method of claim 1 , wherein the mapped CSI-RS are mapped to distributed symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
8. The method of claim 1 , wherein the mapped CSI-RS are mapped to contiguous symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
9. A user equipment (UE) for wireless communication, comprising:
a transceiver;
at least one processor; and
a memory coupled to the at least one processor, the at least one processor and the memory configured to:
establish communication over a sidelink channel;
receive mapped channel state information-reference signals (CSI-RS) over a plurality of physical sidelink shared channel (PSSCH) resource blocks, wherein the mapped CSI-RS are interlaced with resource elements in at least a portion of the plurality of PSSCH resource blocks;
process the mapped CSI-RS received over the plurality of PSSCH blocks;
determine from the processing a channel quality of the sidelink channel from the portion of the plurality of PSSCH resource blocks comprising the mapped CSI-RS; and
configure one or more sidelink communication parameters based on the determined channel quality.
10. The UE of claim 9 , wherein the mapped CSI-RS is interlaced with the resource elements via one of a comb-6, comb-4, comb-3, comb-2 or comb-1 structure.
11. The UE of claim 9 , wherein the at least one processor and the memory are configured to process the CSI-RS received over the plurality of PSSCH resource blocks using code division multiplexing (CDM) in two contiguous combs.
12. The UE of claim 9 , wherein the at least one processor and the memory are configured to process the CSI-RS received over the plurality of PSSCH resource blocks by applying orthogonal cover code (OCC) in at least one of a frequency domain and/or a time domain.
13. The UE of claim 9 , wherein the mapped CSI-RS are mapped over one or two ports.
14. The UE of claim 9 , wherein the mapped CSI-RS are mapped to adjacent symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
15. The UE of claim 9 , wherein the mapped CSI-RS are mapped to distributed symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
16. The UE of claim 9 , wherein the mapped CSI-RS are mapped to contiguous symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
17. A non-transitory computer-readable medium storing computer-executable code at a user equipment (UE), comprising code for causing a computer to:
establish communication over a sidelink channel;
receive mapped channel state information-reference signals (CSI-RS) over a plurality of physical sidelink shared channel (PSSCH) resource blocks, wherein the mapped CSI-RS are interlaced with resource elements in at least a portion of the plurality of PSSCH resource blocks;
process the mapped CSI-RS received over the plurality of PSSCH blocks;
determine from the processing a channel quality of the sidelink channel from the portion of the plurality of PSSCH resource blocks comprising the mapped CSI-RS; and
configure one or more sidelink communication parameters based on the determined channel quality.
18. The non-transitory computer-readable medium of claim 17 , wherein the mapped CSI-RS is interlaced with the resource elements via one of a comb-6, comb-4, comb-3, comb-2 or comb-1 structure.
19. The non-transitory computer-readable medium of claim 17 , wherein processing the CSI-RS received over the plurality of PSSCH resource blocks comprises code division multiplexing (CDM) in two contiguous combs.
20. The non-transitory computer-readable medium of claim 17 , wherein processing the CSI-RS received over the plurality of PSSCH resource blocks comprises applying orthogonal cover code (OCC) in at least one of a frequency domain and/or a time domain.
21. The non-transitory computer-readable medium of claim 17 , wherein the mapped CSI-RS are mapped over one or two ports.
22. The non-transitory computer-readable medium of claim 17 , wherein the mapped CSI-RS are mapped to adjacent symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
23. The non-transitory computer-readable medium of claim 17 , wherein the mapped CSI-RS are mapped to distributed symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
24. The non-transitory computer-readable medium of claim 17 , wherein the mapped CSI-RS are mapped to contiguous symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
25. A user equipment (UE) for wireless communication, comprising:
means for establishing communication over a sidelink channel;
means for receiving mapped channel state information-reference signals (CSI-RS) over a plurality of physical sidelink shared channel (PSSCH) resource blocks, wherein the mapped CSI-RS are interlaced with resource elements in at least a portion of the plurality of PSSCH resource blocks;
means for processing the mapped CSI-RS received over the plurality of PSSCH blocks;
means for determining from the processing a channel quality of the sidelink channel from the portion of the plurality of PSSCH resource blocks comprising the mapped CSI-RS; and
means for configuring one or more sidelink communication parameters based on the determined channel quality.
26. The UE of claim 25 , wherein the mapped CSI-RS is interlaced with the resource elements via one of a comb-6, comb-4, comb-3, comb-2 or comb-1 structure.
27. The UE of claim 25 , wherein the means for processing processes the CSI-RS received over the plurality of PSSCH resource blocks using code division multiplexing (CDM) in two contiguous combs.
28. The UE of claim 25 , wherein the means for processing processes the CSI-RS received over the plurality of PSSCH resource blocks by applying orthogonal cover code (OCC) in at least one of a frequency domain and/or a time domain.
29. The UE of claim 25 , wherein the mapped CSI-RS are mapped over one or two ports.
30. The UE of claim 25 , wherein the mapped CSI-RS are mapped to adjacent symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
31. The UE of claim 25 , wherein the mapped CSI-RS are mapped to distributed symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.
32. The UE of claim 25 , wherein the mapped CSI-RS are mapped to contiguous symbols in the interlaced resource elements in at least some of the plurality of PSSCH resource blocks.