Discontinuous reception operations for wireless communications systems
Methods, systems, and devices for wireless communications are described. A user equipment (UE) of a group of UEs may receive, from a group member of the group of UEs, traffic information including a transmission schedule associated with traffic of the group member UE. The UE may determine a discontinuous reception configuration for the group of UEs based at least in part on the transmission schedule. The discontinuous reception configuration may include a discontinuous reception schedule for the group of UEs. The UE may transmit, to the group of UEs, the discontinuous reception configuration.
1. A method for wireless communications at a first user equipment (UE) of a group of UEs, comprising:
identifying, by the first UE in the group of UEs, that a second UE in the group of UEs is a group leader of the group of UEs;
transmitting, to the second UE, traffic information comprising a transmission schedule associated with traffic of the first UE;
monitoring a resource based at least in part on identifying that the second UE is designated as the group leader;
receiving, from the second UE, a group configuration message indicating a discontinuous reception configuration based at least in part on monitoring the resource;
receiving, from the second UE, an adjustment message based at least in part on transmitting the traffic information; and
adjusting one or more transmissions associated with the transmission schedule based at least in part on the adjustment message.
2. The method of claim 1 , further comprising:
receiving, from the second UE, an acknowledgment message based at least in part on transmitting the traffic information; and
transmitting one or more transmissions associated with the transmission schedule based at least in part on the acknowledgment message.
3. The method of claim 1 , wherein transmitting the traffic information further comprises:
transmitting a PC5 radio resource control message to the second UE, the PC5 radio resource control message comprising the traffic information of the first UE.
4. The method of claim 3 , wherein the traffic information comprises a group identifier, a member identifier, a data rate, a periodicity, an offset, a quality of service (QOS) profile, or a combination thereof.
5. The method of claim 1 , wherein transmitting the traffic information further comprises:
transmitting a medium access control-control element message to the second UE, the medium access control-control element message comprising the traffic information of the first UE.
6. The method of claim 5 , wherein the traffic information comprises a side link group identifier, a side link member identifier, a buffered data amount, a quality of service (QOS) indicator, or a combination thereof.
7. The method of claim 1 , wherein the discontinuous reception configuration indicates an awake period associated with a discontinuous reception cycle, further comprising:
monitoring, during the awake period of the discontinuous reception cycle, for transmissions from the group of UEs; and
terminating the discontinuous reception configuration based at least in part on the awake period associated with the discontinuous reception cycle lapsing.
8. The method of claim 1 , wherein the discontinuous reception configuration indicates multiple awake periods associated with multiple discontinuous reception cycles, further comprising:
monitoring, during the multiple awake periods associated with the multiple discontinuous reception cycles, for transmissions from the group of UEs.
9. The method of claim 8 , further comprising:
receiving, during an awake period of the multiple awake periods and a discontinuous reception cycle of the multiple discontinuous reception cycles, a termination message from the second UE, the termination message indicating that the discontinuous reception configuration is terminated for subsequent discontinuous reception cycles.
10. The method of claim 1 , wherein identifying that the second UE is the group leader of the group of UEs further comprises:
receiving, from an upper layer of the first UE, a message indicating that the second UE is the group leader of the group of UEs.
11. The method of claim 1 , wherein identifying that the second UE is the group leader of the group of UEs further comprises:
determining that the second UE is a leader of a platoon comprising the first UE, that the second UE is a roadside unit, that the second UE performs a resource management operation for the group of UEs, or a combination thereof.
12. An apparatus of a group of apparatuses for wireless communications, comprising:
a processor,
memory coupled with the processor; and
instructions stored in the memory and executable by the processor to cause the apparatus to:
identify, by the apparatus in the group of apparatuses, that a second apparatus in the group of apparatuses is a group leader of the group of apparatuses;
transmit, to the second apparatus, traffic information comprising a transmission schedule associated with traffic of the apparatus;
monitor a resource based at least in part on identifying that the second apparatus is designated as the group leader;
receive, from the second apparatus, a group configuration message indicating a discontinuous reception configuration based at least in part on monitoring the resource;
receive, from the second apparatus, an adjustment message based at least in part on transmitting the traffic information; and
adjust one or more transmissions associated with the transmission schedule based at least in part on the adjustment message.
13. The apparatus of claim 12 , wherein the instructions are further executable by the processor to cause the apparatus to:
receive, from the second apparatus, an acknowledgment message based at least in part on transmitting the traffic information; and
transmit one or more transmissions associated with the transmission schedule based at least in part on the acknowledgment message.
14. The apparatus of claim 12 , wherein the instructions executable by the processor to cause the apparatus to transmit the traffic information are further executable by the processor to cause the apparatus to:
transmit a PC5 radio resource control message to the second apparatus, the PC5 radio resource control message comprising the traffic information of the apparatus.
15. The apparatus of claim 12 , wherein the instructions executable by the processor to cause the apparatus to transmit the traffic information are further executable by the processor to cause the apparatus to:
transmit a medium access control-control element message to the second apparatus, the medium access control-control element message comprising the traffic information of the apparatus.
16. A non-transitory computer-readable medium storing code for wireless communication at a first user equipment (UE) of a group of UEs, the code comprising instructions executable by a processor to:
identify, by the first UE in the group of UEs, that a second UE in the group of UEs is a group leader of the group of UEs;
transmit, to the second UE, traffic information comprising a transmission schedule associated with traffic of the first UE;
monitor a resource based at least in part on identifying that the second UE is designated as the group leader;
receive, from the second UE, a group configuration message indicating a discontinuous reception configuration based at least in part on monitoring the resource;
receive, from the second UE, an adjustment message based at least in part on transmitting the traffic information; and
adjust one or more transmissions associated with the transmission schedule based at least in part on the adjustment message.