Scheduling broadcast or multicast communications for new radio
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a broadcast or a multicast (broadcast/multicast) scheduling configuration for a physical downlink control channel (PDCCH), the broadcast/multicast scheduling configuration identifying, for receiving broadcast/multicast communications, at least one of: a plurality of radio network temporary identifiers that are respectively associated with a plurality of beams, or one or more bandwidth parts. The UE may receive a broadcast/multicast communication associated with a broadcast/multicast control channel or a broadcast/multicast traffic channel via a physical downlink shared channel in accordance with the broadcast/multicast scheduling configuration for the PDCCH. Numerous other aspects are provided.
1. A method of wireless communication performed by a user equipment (UE), comprising:
receiving a first downlink control information (DCI) scheduling a first broadcast or multicast (broadcast/multicast) communication, the first DCI being scrambled by a multicast radio network temporary identifier (M-RNTI) and indicating a first bandwidth part (BWP);
receiving the first broadcast/multicast communication, the first broadcast/multicast communication being associated with a broadcast/multicast control channel via a first physical downlink shared channel (PDSCH) in accordance with the first DCI, and the broadcast/multicast control channel being associated with the M-RNTI and the first BWP;
receiving a second DCI scheduling a second broadcast/multicast communication, the second DCI being scrambled by another RNTI and indicating a second BWP; and
receiving the second broadcast/multicast communication, the second broadcast/multicast communication being associated with a broadcast/multicast traffic channel via a second PDSCH in accordance with the second DCI, and the broadcast/multicast traffic channel being associated with the other RNTI and the second BWP.
2. The method of claim 1 , wherein the second DCI is scrambled by a group RNTI for the second broadcast/multicast communication.
3. The method of claim 1 , wherein the second broadcast/multicast communication is received in accordance with the second BWP.
4. The method of claim 1 , wherein the first DCI indicates a control resource set (CORESET) configuration and a search space configuration.
5. The method of claim 4 , wherein the CORESET configuration indicates a beam configuration.
6. The method of claim 4 , wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is received in accordance with the CORESET configuration and the search space configuration.
7. The method of claim 1 , wherein the M-RNTI corresponds to a particular beam.
8. A method of wireless communication performed by a network entity, comprising:
scheduling a first broadcast or multicast (broadcast/multicast) communication using a first downlink control information (DCI), the first DCI being scrambled by a multicast radio network temporary identifier (M-RNTI) and indicating a first bandwidth part (BWP);
transmitting the first broadcast/multicast communication, the first broadcast/multicast communication being associated with a broadcast/multicast control channel via a first physical downlink shared channel (PDSCH) in accordance with the first DCI, and the broadcast/multicast control channel being associated with the M-RNTI and the first BWP;
scheduling a second broadcast/multicast communication using a second DCI, the second DCI being scrambled by another RNTI and indicating a second BWP; and
transmitting the second broadcast/multicast communication, the second broadcast/multicast communication being associated with a broadcast/multicast traffic channel via a second PDSCH in accordance with the second DCI, and the broadcast/multicast traffic channel being associated with the other RNTI and the second BWP.
9. The method of claim 8 , wherein the second DCI is scrambled by a group RNTI for the second broadcast/multicast communication.
10. The method of claim 8 , wherein the second broadcast/multicast communication is received in accordance with the second BWP.
11. The method of claim 8 , wherein the first DCI indicates a control resource set (CORESET) configuration and a search space configuration.
12. The method of claim 11 , wherein the CORESET configuration indicates a beam configuration.
13. The method of claim 11 , wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is transmitted in accordance with the CORESET configuration and the search space configuration.
14. The method of claim 8 , wherein the M-RNTI corresponds to a particular beam.
15. A user equipment (UE) for wireless communication, comprising:
at least one memory; and
at least one processor communicatively coupled with the at least one memory, the at least one processor configured to cause the UE to:
receive a first downlink control information (DCI) scheduling a first broadcast or multicast (broadcast/multicast) communication, the first DCI being scrambled by a multicast radio network temporary identifier (M-RNTI) and indicating a first bandwidth part (BWP);
receive the first broadcast/multicast communication, the first broadcast/multicast communication being associated with a broadcast/multicast control channel via a first physical downlink shared channel (PDSCH) in accordance with the first DCI, and the broadcast/multicast control channel being associated with the M-RNTI and the first BWP;
receive a second DCI scheduling a second broadcast/multicast communication, the second DCI being scrambled by another RNTI and indicating a second BWP; and
receive the second broadcast/multicast communication, the second broadcast/multicast communication being associated with a broadcast/multicast traffic channel via a second PDSCH in accordance with the second DCI, and the broadcast/multicast traffic channel being associated with the other RNTI and the second BWP.
16. The UE of claim 15 , wherein the second DCI is scrambled by a group RNTI for the second broadcast/multicast communication.
17. The UE of claim 16 , wherein a cyclic redundancy check (CRC) of the second DCI is scrambled by the group RNTI.
18. The UE of claim 15 , wherein the second broadcast/multicast communication is received in accordance with the second BWP.
19. The UE of claim 15 , wherein the first DCI indicates a control resource set (CORESET) configuration and a search space configuration.
20. The UE of claim 19 , wherein the CORESET configuration indicates a beam configuration.
21. The UE of claim 19 , wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is received in accordance with the CORESET configuration and the search space configuration.
22. The UE of claim 15 , wherein the M-RNTI corresponds to a particular beam.
23. The UE of claim 15 , wherein a cyclic redundancy check (CRC) of the first DCI is scrambled by the M-RNTI.
24. A network entity for wireless communication, comprising:
at least one memory; and
at least one processor communicatively coupled with the at least one memory, the at least one processor configured to cause the network entity to:
schedule a first broadcast or multicast (broadcast/multicast) communication using a first downlink control information (DCI), the first DCI being scrambled by a multicast radio network temporary identifier (M-RNTI) and indicating a first bandwidth part (BWP);
transmit the first broadcast/multicast communication, the first broadcast/multicast communication being associated with a broadcast/multicast control channel via a first physical downlink shared channel (PDSCH) in accordance with the first DCI, and the broadcast/multicast control channel being associated with the M-RNTI and the first BWP;
schedule a second broadcast/multicast communication using a second DCI, the second DCI being scrambled by another RNTI and indicating a second BWP; and
transmit the second broadcast/multicast communication, the second broadcast/multicast communication being associated with a broadcast/multicast traffic channel via a second PDSCH in accordance with the second DCI, and the broadcast/multicast traffic channel being associated with the other RNTI and the second BWP.
25. The network entity of claim 24 , wherein the second DCI is scrambled by a group RNTI for the second broadcast/multicast communication.
26. The network entity of claim 24 , wherein the second broadcast/multicast communication is received in accordance with the second BWP.
27. The network entity of claim 24 , wherein the first DCI indicates a control resource set (CORESET) configuration and a search space configuration.
28. The network entity of claim 27 , wherein the CORESET configuration indicates a beam configuration.
29. The network entity of claim 27 , wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is transmitted in accordance with the CORESET configuration and the search space configuration.
30. The network entity of claim 24 , wherein the M-RNTI corresponds to a particular beam.