Semi-persistent scheduling with multiple transmit-receive points
A user equipment (UE) may be provisioned with multiple semi-persistent scheduling (SPS) configurations. The UE may determine a differentiation characteristic for determining which SPS configuration is indicated by a downlink control information or associated with a physical downlink shared channel (PDSCH). For example, the UE may receive a first activation of a first SPS configuration and a second activation of a second SPS configuration. The UE may determine the differentiation characteristic between the first SPS configuration and the second SPS configuration. The UE may determine that one of the first SPS configuration or the second SPS configuration is the SPS configuration for a received PDSCH based on the differentiation characteristic. The UE may transmit an acknowledgment of the PDSCH based on the determined SPS configuration.
1. A method of wireless communication for a user equipment (UE), comprising:
receiving a first activation of a first semi-persistent scheduling (SPS) configuration;
receiving a second activation of a second SPS configuration;
determining at least a partial overlap of frequency domain resources or time domain resources of the first SPS configuration and the second SPS configuration;
determining a differentiation characteristic between the first SPS configuration and the second SPS configuration;
determining that one of the first SPS configuration or the second SPS configuration is the SPS configuration for a received physical downlink shared channel (PDSCH) based on the differentiation characteristic, wherein determining the SPS configuration for the received PDSCH based on the differentiation characteristic comprises:
decoding the PDSCH with a first set of parameters corresponding to the first SPS configuration;
decoding the PDSCH with a second set of parameters corresponding to the second SPS configuration; and
assigning each decoding result to the first SPS configuration or the second SPS configuration based on the set of parameters used for the decoding; and
transmitting an acknowledgment of the PDSCH based on the determined SPS configuration.
2. The method of claim 1 , wherein determining the differentiation characteristic comprises determining a difference in a PDSCH transmission parameter between the first SPS configuration and the second SPS configuration.
3. The method of claim 2 , wherein the difference in the PDSCH transmission parameter comprises a difference in one or more of: a modulation and coding scheme (MCS), a demodulation reference signal port (DMRS), a scrambling identifier for DMRS sequence generation, transmission configuration indicator (TCI) state, quasi co location (QCL), or a combination thereof.
4. The method of claim 2 , wherein the difference in the PDSCH transmission parameter is a scrambling sequence initialization (c_init) associated with a codeword of each of the first SPS configuration and the second SPS configuration.
5. The method of claim 1 , wherein determining the SPS configuration for the received PDSCH based on the differentiation characteristic comprises:
determining that a priority transmit receive point (TRP) associated with one of the first SPS configuration or the second SPS configuration has priority over the other of the first SPS configuration and the second SPS configuration; and
determining that the SPS configuration for the received PDSCH is the SPS configuration associated with the priority TRP.
6. An apparatus for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
receive a first activation of a first semi-persistent scheduling (SPS) configuration;
receive a second activation of a second SPS configuration;
determine at least a partial overlap of frequency domain resources or time domain resources of the first SPS configuration and the second SPS configuration;
decode a received physical downlink shared channel (PDSCH) with a first set of parameters corresponding to the first SPS configuration;
decode the PDSCH with a second set of parameters corresponding to the second SPS configuration;
assign each decoding result to the first SPS configuration or the second SPS configuration based on the set of parameters used for the decoding;
determine a differentiation characteristic between the first SPS configuration and the second SPS configuration;
determine that one of the first SPS configuration or the second SPS configuration is the SPS configuration for the PDSCH based on the differentiation characteristic; and
transmit an acknowledgment of the PDSCH based on the determined SPS configuration.
7. The apparatus of claim 6 , wherein the processor is configured to determine a difference in a PDSCH transmission parameter between the first SPS configuration and the second SPS configuration.
8. The apparatus of claim 7 , wherein the difference in the PDSCH transmission parameter comprises a difference in one or more of: a modulation and coding scheme (MCS), a demodulation reference signal port (DMRS), a scrambling identifier for DMRS sequence generation, transmission configuration indicator (TCI) state, or quasi co location (QCL), or combination thereof.
9. The apparatus of claim 7 , wherein the difference in the PDSCH transmission parameter is a scrambling sequence initialization (c_init) associated with a codeword of each of the first SPS configuration and the second SPS configuration.
10. The apparatus of claim 6 , wherein the processor is configured to:
determine that a priority transmit receive point (TRP) associated with one of the first SPS configuration or the second SPS configuration has priority over the other of the first SPS configuration and the second SPS configuration; and
determine that the SPS configuration for the received PDSCH is the SPS configuration associated with the priority TRP.
11. An apparatus for wireless communication, comprising:
means for receiving a first activation of a first semi-persistent scheduling (SPS) configuration;
means for receiving a second activation of a second SPS configuration;
means for determining at least a partial overlap of frequency domain resources or time domain resources of the first SPS configuration and the second SPS configuration;
means for determining a differentiation characteristic between the first SPS configuration and the second SPS configuration;
means for determining that one of the first SPS configuration or the second SPS configuration is the SPS configuration for a received physical downlink shared channel (PDSCH) based on the differentiation characteristic, wherein the means for determining the SPS configuration for the received PDSCH based on the differentiation characteristic is configured to:
decode the PDSCH with a first set of parameters corresponding to the first SPS configuration;
decode the PDSCH with a second set of parameters corresponding to the second SPS configuration; and
assign each decoding result to the first SPS configuration or the second SPS configuration based on the set of parameters used for the decoding; and
means for transmitting an acknowledgment of the PDSCH based on the determined SPS configuration.
12. The apparatus of claim 11 , wherein the means for determining the differentiation characteristic is configured to determine a difference in a PDSCH transmission parameter between the first SPS configuration and the second SPS configuration.
13. The apparatus of claim 12 , wherein the difference in the PDSCH transmission parameter comprises a difference in one or more of: a modulation and coding scheme (MCS), a demodulation reference signal port (DMRS), a scrambling identifier for DMRS sequence generation, transmission configuration indicator (TCI) state, or quasi co location (QCL), or a combination thereof.
14. The apparatus of claim 12 , wherein the difference in the PDSCH parameter is a scrambling sequence initialization (c_init) associated with a codeword of each of the first SPS configuration and the second SPS configuration.
15. The apparatus of claim 11 , wherein the means for determining the SPS configuration for the received PDSCH based on the differentiation characteristic is configured to:
determine that a priority transmit receive point (TRP) associated with one of the first SPS configuration or the second SPS configuration has priority over the other of the first SPS configuration and the second SPS configuration; and
determine that the SPS configuration for the received PDSCH is the SPS configuration associated with the priority TRP.
16. A non-transitory computer-readable medium storing computer executable code, comprising code to:
receive a first activation of a first semi-persistent scheduling (SPS) configuration;
receive a second activation of a second SPS configuration;
determine at least a partial overlap of frequency domain resources or time domain resources of the first SPS configuration and the second SPS configuration
determine a differentiation characteristic between the first SPS configuration and the second SPS configuration;
determine that one of the first SPS configuration or the second SPS configuration is the SPS configuration for a received physical downlink shared channel (PDSCH) based on the differentiation characteristic, wherein the code to determine the SPS configuration for the received PDSCH based on the differentiation characteristic, comprises code to:
decode the PDSCH with a first set of parameters corresponding to the first SPS configuration;
decode the PDSCH with a second set of parameters corresponding to the second SPS configuration; and
assign each decoding result to the first SPS configuration or the second SPS configuration based on the set of parameters used for the decoding; and
transmit an acknowledgment of the PDSCH based on the determined SPS configuration.
17. The non-transitory computer-readable medium of claim 16 , comprising code to determine a difference in a PDSCH transmission parameter between the first SPS configuration and the second SPS configuration.
18. The non-transitory computer-readable medium of claim 17 , wherein the difference in the PDSCH transmission parameter comprises a difference in one or more of: a modulation and coding scheme (MCS), a demodulation reference signal port (DMRS), a scrambling identifier for DMRS sequence generation, transmission configuration indicator (TCI) state, or quasi co location (QCL), or a combination thereof.
19. The non-transitory computer-readable medium of claim 17 , wherein the difference in the PDSCH parameter is a scrambling sequence initialization (c_init) associated with a codeword of each of the first SPS configuration and the second SPS configuration.
20. The non-transitory computer-readable medium of claim 16 , comprising code to:
determine that a priority transmit receive point (TRP) associated with one of the first SPS configuration or the second SPS configuration has priority over the other of the first SPS configuration and the second SPS configuration; and
determine that the SPS configuration for the received PDSCH is the SPS configuration associated with the priority TRP.