Dual connectivity power control
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, while in dual connectivity with a carrier of a second cell group, a first grant for a first communication on a carrier of a first cell group. The UE may determine an allocated power for the first cell group by a specified time offset before a start of second cell group transmissions. The UE may receive a second grant, after the first grant, for a second communication on the first cell group. The UE may transmit the first communication with a first transmit power. The UE may transmit the second communication with a second transmit power that is based on the allocated power and the first transmit power and/or a maximum transmit power for the first cell group. Numerous other aspects are described.
1. A user equipment (UE) for wireless communication, comprising:
memory; and
one or more processors, coupled to the memory, configured to:
receive, while in dual connectivity with a carrier of a second cell group, a first grant for a first communication on a carrier of a first cell group;
determine an allocated power for carriers of the first cell group by a specified time offset before a start of transmissions on carriers of the second cell group;
receive a second grant, after the first grant, for a second communication on the first cell group;
transmit the first communication with a first transmit power; and
transmit the second communication with a second transmit power that is based at least in part on the allocated power for the carriers of the first cell group and one or more of the first transmit power or a maximum transmit power for the first cell group.
2. The UE of claim 1 , wherein the dual connectivity is inter-band dual connectivity.
3. The UE of claim 1 , wherein the dual connectivity is intra-band dual connectivity.
4. The UE of claim 1 , wherein the carrier of the first cell group and the carrier of the second cell group share a same radio frequency chain of the UE.
5. The UE of claim 1 , wherein the one or more processors, to receive the second grant, are configured to receive the second grant after the specified time offset before the start of transmissions on the carriers of the second cell group.
6. The UE of claim 5 , wherein the second transmit power does not change the power allocated to carriers of the second cell group.
7. The UE of claim 5 , wherein a priority of the first grant satisfies a priority threshold.
8. A method of wireless communication performed by a user equipment (UE), comprising:
receiving, while in dual connectivity with a carrier of a second cell group, a first grant for a first communication on a carrier of a first cell group;
determining an allocated power for carriers of the first cell group by a specified time offset before a start of transmissions on the second cell group;
receiving a second grant, after the first grant, for a second communication on the first cell group;
transmitting the first communication with a first transmit power; and
transmitting the second communication with a second transmit power that is based at least in part on the allocated power for the carriers of the first cell group and one or more of the first transmit power or a maximum transmit power for the first cell group.
9. The method of claim 8 , wherein receiving the second grant includes receiving the second grant after the specified time offset before the start of transmissions on carriers of the second cell group.
10. The method of claim 8 , wherein the second transmit power does not change the power determined for carriers of the second cell group.
11. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to:
receive, while in dual connectivity with a carrier of a second cell group, a first grant for a first communication on a carrier of a first cell group;
determine an allocated power for carriers of the first cell group by a specified time offset before a start of transmissions on carriers of the second cell group;
receive a second grant, after the first grant, for a second communication on the first cell group;
transmit the first communication with a first transmit power; and
transmit the second communication with a second transmit power that is based at least in part on the allocated power for the carriers of the first cell group and one or more of the first transmit power or a maximum transmit power for the first cell group.
12. The non-transitory computer-readable medium of claim 11 , wherein the dual connectivity is inter-band dual connectivity.
13. The non-transitory computer-readable medium of claim 11 , wherein the dual connectivity is intra-band dual connectivity.
14. The non-transitory computer-readable medium of claim 11 , wherein the carrier of the first cell group and the carrier of the second cell group share a same radio frequency chain of the UE.
15. The non-transitory computer-readable medium of claim 11 , wherein the one or more instructions, that cause the UE to receive the second grant, cause the UE to receive the second grant after the specified time offset before the start of transmissions on the carriers of the second cell group.
16. The non-transitory computer-readable medium of claim 15 , wherein the second transmit power does not change the power allocated to the carriers of the second cell group.
17. The non-transitory computer-readable medium of claim 15 , wherein a priority of the first grant satisfies a priority threshold.
18. The non-transitory computer-readable medium of claim 11 , wherein receiving the second grant includes receiving the second grant after the specified time offset before the start of transmissions on the carriers of the second cell group.
19. The non-transitory computer-readable medium of claim 11 , wherein the second transmit power does not change the power determined for carriers of the second cell group.
20. The non-transitory computer-readable medium of claim 11 , wherein the first grant is received from a network entity.
21. An apparatus for wireless communication, comprising:
means for receiving, while in dual connectivity with a carrier of a second cell group, a first grant for a first communication on a carrier of a first cell group;
means for determining an allocated power for carriers of the first cell group by a specified time offset before a start of transmissions on carriers of the second cell group;
means for receiving a second grant, after the first grant, for a second communication on the first cell group;
means for transmitting the first communication with a first transmit power; and
means for transmitting the second communication with a second transmit power that is based at least in part on the allocated power for the carriers of the first cell group and one or more of the first transmit power or a maximum transmit power for the first cell group.
22. The apparatus of claim 21 , wherein the dual connectivity is inter-band dual connectivity.
23. The apparatus of claim 21 , wherein the dual connectivity is intra-band dual connectivity.
24. The apparatus of claim 21 , wherein the carrier of the first cell group and the carrier of the second cell group share a same radio frequency chain of the apparatus.
25. The apparatus of claim 21 , wherein the means for receiving the second grant are configured to receive the second grant after the specified time offset before the start of transmissions on the carriers of the second cell group.
26. The apparatus of claim 25 , wherein the second transmit power does not change the power allocated to the carriers of the second cell group.
27. The apparatus of claim 25 , wherein a priority of the first grant satisfies a priority threshold.
28. The apparatus of claim 21 , wherein the means for receiving the second grant include means for receiving the second grant after the specified time offset before the start of transmissions on the carriers of the second cell group.
29. The apparatus of claim 21 , wherein the second transmit power does not change the power determined for the carriers of the second cell group.
30. The apparatus of claim 21 , wherein the first grant is received from a network entity.