Pathloss reference signal information for multiple component carriers
Aspects relate to wireless communication on multiple component carriers. In some examples, a user equipment (UE) may apply pathloss reference signal information received via a medium access control-control element (MAC-CE) to a set of component carriers for transmitting uplink information. Examples of such transmissions of uplink information include a physical uplink shared channel transmission, a physical uplink control channel transmission, and a sounding reference signal transmission. In some examples, the UE may identify the set of component carriers based on a component carrier identified by the MAC-CE.
1. A method for wireless communication at a user equipment, the method comprising:
receiving a plurality of lists of component carriers;
receiving at least one medium access control - control element (MAC-CE) comprising pathloss reference signal information;
identifying a plurality of component carriers by selecting one list of the plurality of lists of component carriers that includes a first component carrier identified by the MAC-CE;
applying the pathloss reference signal information to the plurality of component carriers; and
transmitting uplink information via the plurality of component carriers according to the applying the pathloss reference signal information to the plurality of component carriers.
2. The method of claim 1 , wherein the uplink information comprises a physical uplink shared channel transmission, a physical uplink control channel transmission, or a sounding reference signal transmission.
3. The method of claim 1 , wherein the first component carrier identified by the MAC-CE comprises:
a serving cell for which the MAC-CE applies.
4. The method of claim 1 , wherein the plurality of lists of component carriers are received via radio resource control signaling or MAC-CE signaling.
5. The method of claim 1 , wherein the pathloss reference signal information of the at least one MAC-CE comprises:
a pathloss reference signal identifier for a physical uplink shared channel (PUSCH) transmission.
6. The method of claim 5 , wherein the pathloss reference signal identifier corresponds to a sounding reference signal (SRS) resource indicator (SRI) PUSCH power control identifier for the PUSCH transmission.
7. The method of claim 1 , wherein the pathloss reference signal information comprises:
a pathloss reference signal identifier for a physical uplink control channel (PUCCH) transmission.
8. The method of claim 1 , wherein the pathloss reference signal information of the at least one MAC-CE comprises:
a pathloss reference signal identifier for a sounding reference signal (SRS) transmission.
9. The method of claim 8 , wherein the pathloss reference signal identifier is for an SRS resource set for the SRS transmission.
10. The method of claim 1 , wherein the applying the pathloss reference signal information to the plurality of component carriers comprises:
configuring power control for the plurality of component carriers according to the pathloss reference signal information.
11. The method of claim 1 , wherein the applying the pathloss reference signal information to the plurality of component carriers comprises:
applying the pathloss reference signal information to all bandwidth parts of the plurality of component carriers.
12. The method of claim 1 , wherein the applying the pathloss reference signal information to the plurality of component carriers comprises:
applying the pathloss reference signal information to each control resource set having the same control resource set identifier for all bandwidth parts of the plurality of component carriers.
13. A user equipment, comprising:
a transceiver configured to communicate with a radio access network;
a memory; and
a processor coupled to the transceiver and the memory, wherein the processor and the memory are configured to:
receive via the transceiver a plurality of lists of component carriers;
receive via the transceiver at least one medium access control-control element (MAC-CE) comprising pathloss reference signal information;
identify a plurality of component carriers by selecting one list of the plurality of lists of component carriers that includes a first component carrier identified by the MAC-CE;
apply the pathloss reference signal information to the plurality of component carriers; and
transmit uplink information via the plurality of component carriers according to application of the pathloss reference signal information to the plurality of component carriers.
14. The user equipment of claim 13 , wherein the uplink information comprises a physical uplink shared channel transmission, a physical uplink control channel transmission, or a sounding reference signal transmission.
15. The user equipment of claim 13 , wherein the first component carrier identified by the MAC-CE comprises:
a serving cell for which the MAC-CE applies.
16. The user equipment of claim 13 , wherein the plurality of lists of component carriers are received via radio resource control signaling or MAC-CE signaling.
17. The user equipment of claim 13 , wherein the pathloss reference signal information of the at least one MAC-CE comprises:
a pathloss reference signal identifier for a physical uplink shared channel (PUSCH) transmission.
18. The user equipment of claim 17 , wherein the pathloss reference signal identifier corresponds to a sounding reference signal (SRS) resource indicator (SRI) PUSCH power control identifier for the PUSCH transmission.
19. The user equipment of claim 13 , wherein the pathloss reference signal information comprises:
a pathloss reference signal identifier for a physical uplink control channel (PUCCH) transmission.
20. The user equipment of claim 13 , wherein the pathloss reference signal information comprises:
a pathloss reference signal identifier for a sounding reference signal (SRS) transmission.
21. The user equipment of claim 20 , wherein the pathloss reference signal identifier is for an SRS resource set for the SRS transmission.
22. The user equipment of claim 13 , wherein the processor and the memory are further configured to:
configure power control for the plurality of component carriers according to the pathloss reference signal information.
23. The user equipment of claim 13 , wherein the processor and the memory are further configured to:
apply the pathloss reference signal information to all bandwidth parts of the plurality of component carriers.
24. The user equipment of claim 13 , wherein the processor and the memory are further configured to:
apply the pathloss reference signal information to each control resource set having the same control resource set identifier for all bandwidth parts of the plurality of component carriers.
25. A user equipment, comprising:
means for receiving a plurality of lists of component carriers;
means for receiving at least one medium access control-control element (MAC-CE) comprising pathloss reference signal information;
means for identifying a plurality of component carriers by selecting one list of the plurality of lists of component carriers that includes a first component carrier identified by the MAC-CE;
means for applying the pathloss reference signal information to the plurality of component carriers; and
means for transmitting uplink information via the plurality of component carriers according to the applying the pathloss reference signal information to the plurality of component carriers.
26. The user equipment of claim 25 , wherein the uplink information comprises a physical uplink shared channel transmission, a physical uplink control channel transmission, or a sounding reference signal transmission.
27. The user equipment of claim 25 , wherein the pathloss reference signal information of the at least one MAC-CE comprises a pathloss reference signal identifier for a physical uplink shared channel transmission, a pathloss reference signal identifier for a physical uplink control channel transmission, or a pathloss reference signal identifier for a sounding reference signal transmission.
28. An article of manufacture for use by a user equipment in a wireless communication network, the article comprising:
a non-transitory computer-readable medium having stored therein instructions executable by one or more processors of the user equipment to:
receive a plurality of lists of component carriers;
receive at least one medium access control-control element (MAC-CE) comprising pathloss reference signal information;
identify a plurality of component carriers by selecting one list of the plurality of lists of component carriers that includes a first component carrier identified by the MAC-CE;
apply the pathloss reference signal information to the plurality of component carriers; and
transmit uplink information via the plurality of component carriers according to application of the pathloss reference signal information to the plurality of component carriers.