Dynamic indication of a full duplex random access channel occasion
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration of a resource associated with a random access channel (RACH) message. The UE may receive an indication of whether the resource associated with the RACH message is permitted to be used for transmission of the RACH message, wherein the indication is included in a dynamic signaling communication. The UE may transmit the RACH message in accordance with the indication. Numerous other aspects are described.
1. An apparatus for wireless communication at a user equipment (UE), comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
receive a configuration, in a first message, of multiple resources associated with a random access channel (RACH) message;
receive an indication, in a second message comprising a downlink control information (DCI) communication or a physical downlink shared channel (PDSCH) transmission, based at least in part on a crosslink interference (CLI) measurement associated with another UE, of whether one or more resources, of the multiple resources, associated with the RACH message, are permitted to be used for transmission of the RACH message, wherein the indication is included in a dynamic signaling communication; and
transmit the RACH message in accordance with the indication.
2. The apparatus of claim 1 , wherein the indication is received from a base station operating in a full duplex (FD) mode.
3. The apparatus of claim 1 , wherein the dynamic signaling communication is a broadcast message.
4. The apparatus of claim 1 , wherein the DCI communication is a common DCI communication directed to a group of UEs.
5. The apparatus of claim 1 , wherein the indication is received from a base station operating in a full duplex (FD) mode, and wherein, based at least in part on the CLI measurement satisfying a threshold, the one or more resources are permitted to overlap with a downlink resource associated with the other UE.
6. The apparatus of claim 1 , wherein the indication is received from a base station operating in a full duplex (FD) mode, and wherein, based at least in part on the CLI measurement not satisfying a threshold, the one or more resources are not permitted to overlap with a downlink resource associated with the other UE.
7. The apparatus of claim 1 , wherein the one or more processors are further configured to receive a configuration of another resource, of the one or more resources, associated with the RACH message, wherein the indication indicates that the other resource associated with the RACH message is not permitted to be used for transmission of the RACH message based at least in part on the CLI measurement.
8. The apparatus of claim 1 , wherein the indication is directed to a group of UEs.
9. The apparatus of claim 8 , wherein the indication indicates that a subset of UEs, of the group of UEs, is permitted to use the resource for RACH transmission.
10. The apparatus of claim 9 , wherein each UE, of the group of UEs, is associated with a corresponding identification number, and wherein the subset of UEs is based at least in part on the corresponding identification numbers of the subset of UEs.
11. The apparatus of claim 10 , wherein each UE, of the subset of UEs, is associated with a corresponding one of an odd identification number or an even identification number.
12. The apparatus of claim 1 , wherein the indication is based at least in part on a prioritized downlink communication to the other UE.
13. The apparatus of claim 1 , wherein the first message comprises a radio resource control message, a system information block (SIB) message, or a synchronization signal block (SSB) message.
14. The apparatus of claim 1 , wherein the first message comprises a physical downlink control channel (PDCCH) order message, wherein the PDCCH order message triggers a RACH procedure corresponding to the RACH message.
15. An apparatus for wireless communication at a base station, comprising:
one or more memories; and
one or more processors, coupled to the one or more memories, configured to:
transmit, to a user equipment (UE), in a first message, a configuration of multiple resources associated with a random access channel (RACH) message;
transmit, to the UE, in a second message comprising a downlink control information (DCI) communication or a physical downlink shared channel (PDSCH) transmission, based at least in part on a crosslink interference (CLI) measurement associated with the UE and another UE, an indication of whether one or more resources, of the multiple resources, associated with the RACH message, are permitted to be used for transmission of the RACH message, wherein the indication is included in a dynamic signaling communication; and
receive, from the UE, the RACH message in accordance with the indication.
16. The apparatus of claim 15 , wherein the base station is operating in a full duplex (FD) mode.
17. The apparatus of claim 15 , wherein the dynamic signaling communication is a broadcast message.
18. The apparatus of claim 15 , wherein the DCI communication is a common DCI communication directed to a group of UEs.
19. The apparatus of claim 15 , wherein the base station is operating in a full duplex (FD) mode, and wherein, based at least in part on the CLI measurement satisfying a threshold, the one or more resources are is permitted to overlap with a downlink resource associated with the other UE.
20. The apparatus of claim 15 , wherein the base station is operating in a full duplex (FD) mode, and wherein, based at least in part on the CLI measurement not satisfying a threshold, the one or more resources are is not permitted to overlap with a downlink resource associated with the other UE.
21. The apparatus of claim 15 , wherein the one or more processors are further configured to transmit a configuration of another resource, of the one or more resources, associated with the RACH message, wherein the indication indicates that the other resource associated with the RACH message is not permitted to be used for transmission of the RACH message based at least in part on the CLI measurement.
22. The apparatus of claim 15 , wherein the indication is directed to a group of UEs.
23. The apparatus of claim 15 , wherein the indication is based at least in part on a prioritized downlink communication to the other UE.
24. The apparatus of claim 15 , wherein the first message comprises a radio resource control message, a system information block (SIB) message, or a synchronization signal block (SSB) message.
25. The apparatus of claim 15 , wherein the first message comprises a physical downlink control channel (PDCCH) order message, wherein the PDCCH order message triggers a RACH procedure corresponding to the RACH message.
26. A method of wireless communication performed by a user equipment (UE), comprising:
receiving a configuration, in a first message, of multiple resources associated with a random access channel (RACH) message;
receiving an indication, in a second message comprising a downlink control information (DCI) communication or a physical downlink shared channel (PDSCH) transmission, based at least in part on a crosslink interference (CLI) measurement associated with another UE, of whether one or more resources, of the multiple resources, associated with the RACH message, are permitted to be used for transmission of the RACH message, wherein the indication is included in a dynamic signaling communication; and
transmitting the RACH message in accordance with the indication.
27. The method of claim 26 , wherein the indication is received from a base station operating in a full duplex (FD) mode.
28. The method of claim 26 , further comprising receiving a configuration of another resource, of the one or more resources, associated with the RACH message, wherein the indication indicates that the other resource associated with the RACH message is not permitted to be used for transmission of the RACH message based at least in part on the CLI measurement.
29. A method of wireless communication performed by a base station, comprising:
transmitting, to a user equipment (UE), in a first message, a configuration of multiple resources associated with a random access channel (RACH) message;
transmitting, to the UE, in a second message comprising a downlink control information (DCI) communication or a physical downlink shared channel (PDSCH) transmission, based at least in part on a crosslink interference (CLI) measurement associated with the UE and another UE, an indication of whether one or more resources, of the multiple resources, associated with the RACH message, are permitted to be used for transmission of the RACH message, wherein the indication is included in a dynamic signaling communication; and
receiving, from the UE, the RACH message in accordance with the indication.
30. The method of claim 29 , further comprising transmitting a configuration of another resource associated with the RACH message, wherein the indication indicates that the other resource associated with the RACH message is not permitted to be used for transmission of the RACH message based at least in part on the CLI measurement.