Skipped uplink configured grant occasions in sidelink transmissions
Aspects presented herein may enable a UE with an UL-CG to use resources associated with one or more UL transmissions for sidelink communications. In one aspect, a first UE transmits an indication of an UL-CG configuration including a set of periodic resources, where the UL-CG configuration corresponds to at least one allocated UL transmission for the first UE to a network node, where the indication is transmitted to at least one second UE. The first UE skips at least one UL transmission associated with the UL-CG configuration, where the skipped at least one UL transmission corresponds to a subset of the set of periodic resources. The first UE transmits a SL transmission to the at least one second UE using at least the subset of the set of periodic resources corresponding to the skipped at least one UL transmission associated with the UL-CG configuration.
1. An apparatus for wireless communication at a first user equipment (UE), comprising:
at least one memory; and
at least one processor coupled to the at least one memory, wherein the at least one processor is configured to:
transmit an indication of an uplink (UL)-configured grant (CG) (UL-CG) configuration including a set of periodic resources, wherein the UL-CG configuration corresponds to at least one allocated UL transmission for the first UE to a network node, wherein the indication is transmitted to at least one second UE;
receive, from the network node, a configuration for an allowance to skip at least one UL transmission associated with the UL-CG configuration;
skip the at least one UL transmission associated with the UL-CG configuration based on the configuration, wherein the skipped at least one UL transmission corresponds to a subset of the set of periodic resources; and
transmit a sidelink (SL) transmission to the at least one second UE using at least the subset of the set of periodic resources corresponding to the skipped at least one UL transmission associated with the UL-CG configuration.
2. The apparatus of claim 1 , wherein the at least one processor is configured to:
receive the UL-CG configuration from the network node, wherein the UL-CG configuration includes the set of periodic resources.
3. The apparatus of claim 2 , wherein to transmit the indication of the UL-CG configuration, the at least one processor is configured to forward the UL-CG configuration received from the network node.
4. The apparatus of claim 2 , wherein the indication includes a subset of parameters of the UL-CG configuration received from the network node.
5. The apparatus of claim 1 , wherein the at least one processor is configured to:
transmit a second indication to the at least one second UE indicating the SL transmission, wherein the SL transmission is transmitted based on the second indication.
6. The apparatus of claim 1 , wherein the at least one UL transmission is skipped based on a priority order between UL communication and SL communication.
7. The apparatus of claim 6 , wherein a plurality of UL transmissions is skipped based on the SL transmission having a higher priority order than the plurality of UL transmissions.
8. The apparatus of claim 1 , wherein the at least one processor is configured to:
determine to skip the at least one UL transmission associated with the UL-CG configuration based on a slot type configured for the at least one UL transmission, wherein the at least one UL transmission is skipped based on the determination.
9. The apparatus of claim 8 , wherein the slot type includes at least one of:
an UL slot,
a flexible (FL) slot,
a full-duplex (FD) slot, or
a half-duplex (HD) slot.
10. The apparatus of claim 1 , wherein the at least one processor is configured to:
receive a configuration that configures one or more parameters for transmitting the SL transmission, wherein the one or more parameters are based on at least one configuration parameter of the UL-CG configuration.
11. The apparatus of claim 10 , wherein the one or more parameters include at least one of: a beam direction, a modulation coding scheme (MCS), a bandwidth, or a transmission (Tx) power for transmitting the SL transmission.
12. The apparatus of claim 1 , wherein the set of periodic resources is associated with a set of time and frequency resources and a periodicity for the at least one allocated UL transmission.
13. A method of wireless communication at a first user equipment (UE), comprising:
transmitting an indication of an uplink (UL)-configured grant (CG) (UL-CG) configuration including a set of periodic resources, wherein the UL-CG configuration corresponds to at least one allocated UL transmission for the first UE to a network node, wherein the indication is transmitted to at least one second UE;
receiving, from the network node, a configuration for an allowance to skip at least one UL transmission associated with the UL-CG configuration;
skipping the at least one UL transmission associated with the UL-CG configuration based on the configuration, wherein the skipped at least one UL transmission corresponds to a subset of the set of periodic resources; and
transmitting a sidelink (SL) transmission to the at least one second UE using at least the subset of the set of periodic resources corresponding to the skipped at least one UL transmission associated with the UL-CG configuration.
14. The method of claim 13 , further comprising:
receiving the UL-CG configuration from the network node, wherein the UL-CG configuration includes the set of periodic resources.
15. The method of claim 13 , further comprising:
transmitting a second indication to the at least one second UE indicating the SL transmission, wherein the SL transmission is transmitted based on the second indication.
16. The method of claim 13 , further comprising:
determining to skip the at least one UL transmission associated with the UL-CG configuration based on a slot type configured for the at least one UL transmission, wherein the at least one UL transmission is skipped based on the determination.
17. The method of claim 13 , further comprising:
receiving a configuration that configures one or more parameters for transmitting the SL transmission, wherein the one or more parameters are based on at least one configuration parameter of the UL-CG configuration.
18. The method of claim 17 , wherein the one or more parameters include at least one of: a beam direction, a modulation coding scheme (MCS), a bandwidth, or a transmission (Tx) power for transmitting the SL transmission.
19. An apparatus for wireless communication at a second user equipment (UE), comprising:
at least one memory; and
at least one processor coupled to the at least one memory, wherein the at least one processor is configured to:
receive an indication of an uplink (UL)-configured grant (CG) (UL-CG) configuration including a set of periodic resources, wherein the UL-CG configuration corresponds to at least one allocated UL transmission for a first UE to a network node;
receive a second indication from the first UE indicating a sidelink (SL) transmission using at least a subset of the set of periodic resources associated with the UL-CG configuration; and
receive, based on the second indication, the SL transmission from the first UE via at least the subset of the set of periodic resources associated with the UL-CG configuration wherein at least one UL transmission is skipped.
20. The apparatus of claim 19 , wherein the indication is received from the first UE via a second SL transmission or received from the network node via a UE-to-universal mobile telecommunications system (UMTS) terrestrial radio access network (UE-to-UTRAN) (Uu) link.
21. The apparatus of claim 19 , wherein the at least one processor is configured to:
monitor for the SL transmission based on the set of periodic resources prior to receiving the SL transmission.
22. The apparatus of claim 21 , wherein to monitoring for the SL transmission based on the set of periodic resources, the at least one processor is configured to:
monitor all of the set of periodic resources,
monitor a second subset of the set of periodic resources, or
monitor at least one periodic resource in the set of periodic resources associated with the UL-CG configuration.
23. The apparatus of claim 19 , wherein the indication includes a subset of parameters of the UL-CG configuration.
24. The apparatus of claim 19 , wherein the at least one processor is configured to:
receive a configuration that configures one or more parameters for receiving the SL transmission, wherein the one or more parameters are based on at least one configuration parameter of the UL-CG configuration.
25. The apparatus of claim 24 , wherein the one or more parameters include at least one of: a beam direction, a modulation coding scheme (MCS), a bandwidth, or a reception (Rx) power for receiving the SL transmission.
26. The apparatus of claim 19 , wherein the set of periodic resources is associated with a set of time and frequency resources and a periodicity for the at least one allocated UL transmission.
27. A method of wireless communication at a second user equipment (UE), comprising:
receiving an indication of an uplink (UL)-configured grant (CG) (UL-CG) configuration including a set of periodic resources, wherein the UL-CG configuration corresponds to at least one allocated UL transmission for a first UE to a network node;
receiving a second indication from the first UE indicating a sidelink (SL) transmission using at least a subset of the set of periodic resources associated with the UL-CG configuration;
and receiving, based on the second indication, the SL transmission from the first UE via at least a the subset of the set of periodic resources associated with the UL-CG configuration wherein at least one UL transmission is skipped.