Range extension for radio link control status reporting
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive radio resource control (RRC) signaling that indicates to configure the UE with one or more formats for transmitting a radio link control (RLC) status report. The UE may transmit the RLC status report using an indicated format, of the one or more formats or an additional format for transmitting the RLC status report, wherein use of the indicated format is based at least in part on a physical layer indication or a medium access control (MAC) layer indication. Numerous other aspects are described.
1. A method of wireless communication performed by a user equipment (UE), comprising:
receiving radio resource control (RRC) signaling that indicates to configure the UE with one or more formats for transmitting a radio link control (RLC) status report, wherein the one or more formats comprise:
a first format configured to indicate a sequence number of a downlink transmission using a first bit count, or
a second format configured to indicate a sequence number of a downlink transmission using a second bit count that is larger than the first bit count;
receiving a physical layer indication or a medium access control (MAC) layer indication that indicates a format for the UE to use for the RLC status report, the indicated format being one of the one or more formats identified in the RRC signaling or an additional format not identified in the RRC signaling; and
transmitting the RLC status report using the indicated format.
2. The method of claim 1 , wherein transmitting the RLC status report using the indicated format comprises:
transmitting the RLC status report using a MAC layer signaling format.
3. The method of claim 1 , wherein the first format configured to indicate a sequence number of a downlink transmission using a 12-bit sequence number as the first bit count, and the second format configured to indicate a sequence number of a downlink transmission using an 18-bit sequence number as the second bit count.
4. The method of claim 1 , wherein receiving the physical layer indication or the medium access control (MAC) layer indication comprises one or more of:
receiving one or more MAC control elements that include the MAC layer indication, or
receiving downlink control information that includes the physical layer indication.
5. The method of claim 4 , further comprising:
transmitting one or more additional RLC status reports using the indicated format based at least in part on the physical layer indication or the MAC layer indication.
6. The method of claim 5 , further comprising:
receiving an indication to use a different format for transmitting a subsequent RLC status report.
7. The method of claim 6 , further comprising:
transmitting a request to change from the indicated format for transmitting the subsequent RLC status report,
wherein reception of the indication to use the different format for transmitting the subsequent RLC status report is based at least in part on transmission of the request to change from the indicated format for transmitting the subsequent RLC status report.
8. The method of claim 1 , wherein the RLC status report is associated with a cell group on frequency range 2.
9. The method of claim 1 , further comprising:
configuring the UE, based at least in part on receiving the RRC signaling, with the one or more formats.
10. The method of claim 1 , further comprising:
generating the RLC status report having the indicated format based at least in part on receiving the physical layer indication or the MAC layer indication.
11. A user equipment (UE) for wireless communication, comprising:
one or more memories; and
one or more processors coupled to the one or more memories, the one or more processors configured to:
receive radio resource control (RRC) signaling that indicates to configure the UE with one or more formats for transmitting a radio link control (RLC) status report, wherein the one or more formats comprise:
a first format configured to indicate a sequence number of a downlink transmission using a first bit count, or
a second format configured to indicate a sequence number of a downlink transmission using a second bit count that is larger than the first bit count;
receive a physical layer indication or a medium access control (MAC) layer indication that indicates a format for the UE to use for the RLC status report, the indicated format being one of the one or more formats identified in the RRC signaling or an additional format not identified in the RRC signaling; and
transmit the RLC status report using the indicated format.
12. The UE of claim 11 , wherein the one or more processors, when transmitting the RLC status report using the indicated format, are configured to:
transmit the RLC status report using a MAC layer signaling format.
13. The UE of claim 11 , wherein the first format is configured to indicate a sequence number of a downlink transmission using a 12-bit sequence number as the first bit count, and the second format is configured to indicate a sequence number of a downlink transmission using an 18-bit sequence number as the second bit count.
14. The UE of claim 11 , wherein the one or more processors, when receiving the physical layer indication or the MAC layer indication, are configured to:
receive one or more MAC control elements that include the MAC layer indication, or
receive downlink control information that includes the physical layer indication.
15. The UE of claim 14 , wherein the one or more processors are further configured to:
transmit one or more additional RLC status reports using the indicated format based at least in part on the physical layer indication or the MAC layer indication.
16. The UE of claim 15 , wherein the one or more processors are further configured to:
receive an indication to use a different format for transmitting a subsequent RLC status report.
17. The UE of claim 16 , wherein the one or more processors are further configured to:
transmit a request to change from the indicated format for transmitting the subsequent RLC status report,
wherein reception of the indication to use the different format for transmitting the subsequent RLC status report is based at least in part on transmission of the request to change from the indicated format for transmitting the subsequent RLC status report.
18. The UE of claim 11 , wherein the RLC status report is associated with a cell group on frequency range 2.
19. The UE of claim 11 , wherein the one or more processors are further configured to:
configure the UE, based at least in part on receiving the RRC signaling, with the one or more formats.
20. The UE of claim 11 , wherein the one or more processors are further configured to:
generate the RLC status report having the indicated format based at least in part on receiving the physical layer indication or the MAC layer indication.
21. A method of wireless communication performed by a network entity, comprising:
transmitting radio resource control (RRC) signaling that indicates to configure a user equipment (UE) with one or more formats for transmitting a radio link control (RLC) status report, wherein the one or more formats comprise:
a first format configured to indicate a sequence number of a downlink transmission using a first bit count, or
a second format configured to indicate a sequence number of a downlink transmission using a second bit count that is larger than the first bit count;
transmitting a physical layer indication or a medium access control (MAC) layer indication that indicates a format for the UE to use for the RLC status report, the indicated format being one of the one or more formats identified in the RRC signaling or an additional format not identified in the RRC signaling; and
receiving the RLC status report using the indicated format.
22. The method of claim 21 , wherein the first format configured to indicate a sequence number of a downlink transmission using a 12-bit sequence number as the first bit count, and the second format configured to indicate a sequence number of a downlink transmission using an 18-bit sequence number as the second bit count.
23. The method of claim 21 , further comprising:
receiving a request to change from the indicated format for transmitting a subsequent RLC status report.
24. The method of claim 21 , further comprising:
transmitting an indication to use a different format for transmitting a subsequent RLC status report.
25. The method of claim 21 , wherein the RLC status report is associated with a cell group on frequency range 2.
26. A network entity for wireless communication, comprising:
one or more memories; and
one or more processors coupled to the one or more memories, the one or more processors configured to:
transmit radio resource control (RRC) signaling that indicates to configure a user equipment (UE) with one or more formats for transmitting a radio link control (RLC) status report, wherein the one or more formats comprise:
a first format configured to indicate a sequence number of a downlink transmission using a first bit count, or
a second format configured to indicate a sequence number of a downlink transmission using a second bit count that is larger than the first bit count;
transmit a physical layer indication or a medium access control (MAC) layer indication that indicates a format for the UE to use for the RLC status report, the indicated format being one of the one or more formats identified in the RRC signaling or an additional format not identified in the RRC signaling; and
receive the RLC status report using the indicated format.
27. The network entity of claim 26 , wherein the first format configured to indicate a sequence number of a downlink transmission using a 12-bit sequence number as the first bit count, and the second format configured to indicate a sequence number of a downlink transmission using an 18-bit sequence number as the second bit count.
28. The network entity of claim 26 , wherein the one or more processors are further configured to:
receive a request to change from the indicated format for transmitting a subsequent RLC status report.
29. The network entity of claim 26 , wherein the one or more processors are further configured to:
receive an indication to use a different format for transmitting a subsequent RLC status report.
30. The network entity of claim 26 , wherein the RLC status report is associated with a cell group on frequency range 2.