Action time signalling for semi-persistent scheduling (SPS) or configured grant (CG) reactivation
Apparatuses and methods for wireless communication are provided. In an aspect, a user equipment (UE) receives a DCI from a base station, the DCI including an update to a periodically-occurring scheduling, where an absolute time for the update to take effect is specified in an RRC configuration of the DCI. The UE applies the update to the periodically-occurring scheduling for communications of the UE beginning at and following the absolute time. In another aspect, the UE receives at least one downlink communication that updates a plurality of SPS or CG parameters. The UE determines an action time for the update to take effect for each parameter, where the action time is a function of a type of each parameter. The UE applies the update to each parameter for communications of the UE beginning at and following a respective action time.
1. A method of wireless communication for a user equipment (UE), comprising:
receiving, by the UE, an activation/reactivation downlink control information (DCI) from a base station, the activation/reactivation DCI including an update to a periodically-occurring scheduling parameter, wherein an absolute time for the update to take effect is specified in a radio resource control (RRC) configuration of the activation/reactivation DCI; and
applying the update to the periodically-occurring scheduling parameter for communications of the UE beginning at and following the absolute time, wherein the absolute time is common to a group of UEs including the UE, wherein updates to one or more periodically-occurring scheduling parameters of the group of UEs take effect at the absolute time.
2. The method of claim 1 , wherein the one or more periodically-occurring scheduling parameters comprises a semi-persistent scheduling (SPS) parameter or a configured grant (CG) parameter.
3. The method of claim 1 , wherein the absolute time is after an end of the activation/reactivation DCI.
4. The method of claim 1 , wherein the absolute time is a next boundary within a set of periodic time boundaries.
5. The method of claim 1 , wherein the absolute time is expressed in a frame index, a subframe index, a slot index, or a symbol index.
6. A user equipment (UE) for wireless communication, comprising:
a transceiver;
a memory configured to store instructions; and
one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to:
receive, by the UE, an activation/reactivation downlink control information (DCI) from a base station, the activation/reactivation DCI including an update to a periodically-occurring scheduling parameter, wherein an absolute time for the update to take effect is specified in a radio resource control (RRC) configuration of the activation/reactivation DCI; and
apply the update to the periodically-occurring scheduling parameter for communications of the UE beginning at and following the absolute time, wherein the absolute time is common to a group of UEs including the UE, wherein updates to one or more periodically-occurring scheduling parameters of the group of UEs take effect at the absolute time.
7. The UE of claim 6 , wherein the one or more periodically-occurring scheduling parameters comprises a semi-persistent scheduling (SPS) parameter or a configured grant (CG) parameter.
8. The UE of claim 6 , wherein the absolute time is after an end of the activation/reactivation DCI.
9. The UE of claim 6 , wherein the absolute time is a next boundary within a set of periodic time boundaries.
10. The UE of claim 6 , wherein the absolute time is expressed in a frame index, a subframe index, a slot index, or a symbol index.
11. A method of wireless communication for a base station, comprising:
transmitting, by the base station, an activation/reactivation downlink control information (DCI) to a user equipment (UE), the activation/reactivation DCI including an update to a periodically-occurring scheduling parameter, wherein an absolute time for the update to take effect is specified in a radio resource control (RRC) configuration of the activation/reactivation DCI; and
applying the update to the periodically-occurring scheduling parameter for communications with the UE beginning at and following the absolute time, wherein the absolute time is common to a group of UEs including the UE, wherein updates to one or more periodically-occurring scheduling parameters of the group of UEs take effect at the absolute time.
12. The method of claim 11 , wherein the one or more periodically-occurring scheduling parameters comprises a semi-persistent scheduling (SPS) parameter or a configured grant (CG) parameter.
13. The method of claim 11 , wherein the absolute time is after an end of the activation/reactivation DCI.
14. The method of claim 11 , wherein the absolute time is a next boundary within a set of periodic time boundaries.
15. The method of claim 11 , wherein the absolute time is expressed in a frame index, a subframe index, a slot index, or a symbol index.
16. A base station for wireless communication, comprising:
a transceiver;
a memory configured to store instructions; and
one or more processors communicatively coupled with the transceiver and the memory, wherein the one or more processors are configured to:
transmit, by the base station, an activation/reactivation downlink control information (DCI) to a user equipment (UE), the activation/reactivation DCI including an update to a periodically-occurring scheduling parameter, wherein an absolute time for the update to take effect is specified in a radio resource control (RRC) configuration of the activation/reactivation DCI; and
apply the update to the periodically-occurring scheduling parameter for communications with the UE beginning at and following the absolute time, wherein the absolute time is common to a group of UEs including the UE, wherein updates to one or more periodically-occurring scheduling parameters of the group of UEs take effect at the absolute time.
17. The base station of claim 16 , wherein the one or more periodically-occurring scheduling parameters comprises a semi-persistent scheduling (SPS) parameter or a configured grant (CG) parameter.
18. The base station of claim 16 , wherein the absolute time is after an end of the activation/reactivation DCI.
19. The base station of claim 16 , wherein the absolute time is a next boundary within a set of periodic time boundaries.
20. The base station of claim 16 , wherein the absolute time is expressed in a frame index, a subframe index, a slot index, or a symbol index.