Semi-persistent scheduling activation and deactivation
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a first packet and a second packet for transmission during a period for a periodic application. The UE may transmit the first packet and the second packet in a combination of a dynamic grant and a configured grant occasion. In some aspects, a network entity may receive a first packet and a second packet for transmission. The network entity may transmit the first packet and the second packet in a combination of a dynamic grant and a semi-persistent scheduling occasion. Numerous other aspects are described.
1 . A user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
receive configuration information indicating a first semi-persistent scheduling (SPS) configuration and a second SPS configuration, wherein:
one or more first periodic resources defined by the first SPS configuration and one or more second periodic resources defined by the second SPS configuration are within a time interval associated with a traffic burst of a communication, and
the first SPS configuration and the second SPS configuration include variable SPS parameters;
obtain an indication that activates or deactivates at least one periodic resource, of the one or more first periodic resources or the one or more second periodic resources; and
perform the communication in accordance with the indication.
2 . The UE of claim 1 ,
wherein a periodic resource, of the one or more second periodic resources, occurs before the one or more first periodic resources and within the time interval, or after the one or more first periodic resources and within the time interval.
3 . The UE of claim 1 ,
wherein the indication comprises:
a first indication associated with the first SPS configuration, and
a second indication associated with the second SPS configuration.
4 . The UE of claim 1 ,
wherein the one or more processors are further configured to:
deactivate the one or more second periodic resources of the second SPS configuration after a deactivation time interval has elapsed without the UE communicating on the one or more second periodic resources.
5 . The UE of claim 1 ,
wherein hybrid automatic repeat request (HARQ) process identifiers are assigned separately for the first SPS configuration and the second SPS configuration.
6 . The UE of claim 1 ,
wherein the indication activates the at least one periodic resource, and wherein the indication indicates a hybrid automatic repeat request (HARQ) process identifier for the at least one periodic resource.
7 . The UE of claim 1 ,
wherein hybrid automatic repeat request (HARQ) process identifiers for the first SPS configuration or the second SPS configuration are selected from a pool of HARQ process identifiers that are shared across the first SPS configuration and the second SPS configuration.
8 . The UE of claim 1 ,
wherein the indication is based at least in part on a sequence used to generate a demodulation reference signal.
9 . The UE of claim 1 ,
wherein the indication is via downlink control information (DCI).
10 . The UE of claim 9 ,
wherein the indication comprises a flag of the DCI.
11 . The UE of claim 9 ,
wherein the DCI is on a periodic resource associated with the first SPS configuration or the second SPS configuration.
12 . The UE of claim 1 ,
wherein the indication includes multiple multiplexed DCI messages.
13 . The UE of claim 1 ,
wherein the time interval associated with the traffic burst of the communication is based at least in part on an expected deviation of an actual arrival time of a packet relative to a scheduled arrival time of the packet.
14 . The UE of claim 1 ,
wherein a periodicity of the first SPS configuration or the second SPS configuration is based at least in part on a periodicity of the communication.
15 . The UE of claim 1 ,
wherein the first SPS configuration and the second SPS configuration are configured based at least in part on one or more parameters of a traffic flow that includes the communication.
16 . The UE of claim 1 ,
wherein the one or more processors, to obtain the indication, are configured to receive the indication.
17 . The UE of claim 1 ,
wherein the indication is an implicit indication.
18 . A network node for wireless communication, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
transmit configuration information indicating a first semi-persistent scheduling (SPS) configuration and a second SPS configuration, wherein:
one or more first periodic resources defined by the first SPS configuration and one or more second periodic resources defined by the second SPS configuration are within a time interval associated with a traffic burst of a communication, and
the first SPS configuration and the second SPS configuration include variable SPS parameters; and
transmit an indication that activates or deactivates at least one periodic resource, of the one or more first periodic resources or the one or more second periodic resources.
19 . The network node of claim 18 ,
wherein a periodic resource, of the one or more second periodic resources, occurs before the one or more first periodic resources and within the time interval, or after the one or more first periodic resources and within the time interval.
20 . The network node of claim 18 ,
wherein the one or more processors are further configured to:
deactivate the one or more second periodic resources of the second SPS configuration after a deactivation time interval has elapsed without communicating on the one or more second periodic resources.
21 . The network node of claim 18 ,
wherein hybrid automatic repeat request (HARQ) process identifiers are assigned separately for the first SPS configuration and the second SPS configuration.
22 . The network node of claim 18 ,
wherein the indication activates the at least one periodic resource, and wherein the indication indicates a hybrid automatic repeat request (HARQ) process identifier for the at least one periodic resource.
23 . The network node of claim 18 ,
wherein hybrid automatic repeat request (HARQ) process identifiers for the first SPS configuration or the second SPS configuration are selected from a pool of HARQ process identifiers that are shared across the first SPS configuration and the second SPS configuration.
24 . The network node of claim 18 ,
wherein hybrid automatic repeat request (HARQ) process identifiers for the first SPS configuration or the second SPS configuration are selected from more than 8 possible HARQ process identifiers.
25 . A method of wireless communication performed by a user equipment (UE), comprising:
receiving configuration information indicating a first semi-persistent scheduling (SPS) configuration and a second SPS configuration, wherein:
one or more first periodic resources defined by the first SPS configuration and one or more second periodic resources defined by the second SPS configuration are within a time interval associated with a traffic burst of a communication, and
the first SPS configuration and the second SPS configuration include variable SPS parameters;
obtaining an indication that activates or deactivates at least one periodic resource, of the one or more first periodic resources or the one or more second periodic resources; and
performing the communication in accordance with the indication.
26 . The method of claim 25 ,
wherein a periodic resource, of the one or more second periodic resources, occurs before the one or more first periodic resources and within the time interval, or after the one or more first periodic resources and within the time interval.
27 . The method of claim 25 ,
wherein the indication comprises:
a first indication associated with the first SPS configuration, and
a second indication associated with the second SPS configuration.
28 . A method of wireless communication performed by a network node, comprising:
transmitting configuration information indicating a first semi-persistent scheduling (SPS) configuration and a second SPS configuration, wherein:
one or more first periodic resources defined by the first SPS configuration and one or more second periodic resources defined by the second SPS configuration are within a time interval associated with a traffic burst of a communication, and
the first SPS configuration and the second SPS configuration include variable SPS parameters; and
transmitting an indication that activates or deactivates at least one periodic resource, of the one or more first periodic resources or the one or more second periodic resources.
29 . The method of claim 28 ,
wherein a periodic resource, of the one or more second periodic resources, occurs before the one or more first periodic resources and within the time interval, or after the one or more first periodic resources and within the time interval.
30 . The method of claim 28 , further comprising:
deactivating the one or more second periodic resources of the second SPS configuration after a deactivation time interval has elapsed without communicating on the one or more second periodic resources.