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 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, a plurality of radio network temporary identifiers (RNTIs) that are respectively associated with a plurality of beams;
receiving a first broadcast/multicast communication, of the broadcast/multicast communications, associated with a broadcast/multicast control channel via a physical downlink shared channel (PDSCH) in accordance with the broadcast/multicast scheduling configuration for the PDCCH,
the broadcast/multicast control channel being associated with a first set of RNTIs of the plurality of RNTIs; and
receiving a second broadcast/multicast communication, of the broadcast/multicast communications, associated with a broadcast/multicast traffic channel via the PDSCH in accordance with the broadcast/multicast scheduling configuration for the PDCCH,
the broadcast/multicast traffic channel being associated with a second set of RNTIs of the plurality of RNTIs.
2. The method of claim 1 , further comprising receiving control information that identifies a particular RNTI of the plurality of RNTIs, wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is received in accordance with the particular RNTI.
3. The method of claim 1 , wherein the broadcast/multicast scheduling configuration identifies a plurality of time offsets associated with the plurality of beams.
4. The method of claim 3 , further comprising receiving control information that identifies a particular time offset of the plurality of time offsets, wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is received in accordance with the particular time offset.
5. The method of claim 1 , wherein the broadcast/multicast scheduling configuration provides information relating to identification of repetitions of one or more of the first broadcast/multicast communication or the second broadcast/multicast communication.
6. The method of claim 1 , further comprising receiving control information that identifies a bandwidth part (BWP), wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is received in accordance with the BWP.
7. The method of claim 1 , wherein the broadcast/multicast scheduling configuration identifies a frequency-hopping pattern within a bandwidth part (BWP) or a frequency-hopping pattern across multiple BWPs.
8. The method of claim 1 , wherein the broadcast/multicast scheduling configuration identifies a plurality of control resource set (CORESET) configurations and search space configurations for a bandwidth part (BWP), and wherein a CORESET configuration of the plurality of CORESET configurations identifies a beam configuration.
9. The method of claim 8 , further comprising receiving control information that identifies a particular CORESET configuration and search space configuration of the plurality of CORESET configurations and search space configurations, wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is received in accordance with the particular CORESET configuration and search space configuration.
10. The method of claim 1 , wherein the broadcast/multicast scheduling configuration identifies a mapping of unicast hybrid automatic repeat request (HARQ) process identifiers to broadcast/multicast HARQ process identifiers associated with one or more of the first broadcast/multicast communication or the second broadcast/multicast communication.
11. The method of claim 1 , wherein the broadcast/multicast scheduling configuration identifies a timeline configuration that indicates a first time duration between processing of the PDCCH and receiving the first broadcast/multicast communication, and a second time duration between receiving the first broadcast/multicast communication and transmitting acknowledgment or negative-acknowledgment feedback, and wherein each of the first time duration and the second time duration is different than a corresponding time duration for a unicast transmission.
12. The method of claim 1 , further comprising receiving, from a first group of one or more cells with a single frequency network (SFN), control information that schedules one or more of the first broadcast/multicast communication or the second broadcast/multicast communication in the PDSCH, wherein the one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is received from a second group of one or more cells with an SFN.
13. A method of wireless communication performed by a network entity, comprising:
transmitting a broadcast or a multicast (broadcast/multicast) scheduling configuration for a physical downlink control channel (PDCCH),
the broadcast/multicast scheduling configuration identifying, for broadcast/multicast communications, a plurality of radio network temporary identifiers (RNTIs) that are respectively associated with a plurality of beams;
transmitting a first broadcast/multicast communication, of the broadcast/multicast communications, associated with a broadcast/multicast control channel via a physical downlink shared channel in accordance with the broadcast/multicast scheduling configuration for the PDCCH,
the broadcast/multicast control channel being associated with a first set of RNTIs of the plurality of RNTIs; and
transmitting a second broadcast/multicast communication, of the broadcast/multicast communications, associated with a broadcast/multicast traffic channel via the PDSCH in accordance with the broadcast/multicast scheduling configuration for the PDCCH,
the broadcast/multicast traffic channel being associated with a second set of RNTIs of the plurality of RNTIs.
14. The method of claim 13 , further comprising transmitting control information that identifies a particular RNTI of the plurality of RNTIs, wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is transmitted in accordance with the particular RNTI.
15. The method of claim 13 , wherein the broadcast/multicast scheduling configuration identifies a plurality of time offsets associated with the plurality of beams.
16. The method of claim 15 , further comprising transmitting control information that identifies a particular time offset of the plurality of time offsets, wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is transmitted in accordance with the particular time offset.
17. The method of claim 13 , wherein the broadcast/multicast scheduling configuration provides information relating to identification of repetitions of one or more of the first broadcast/multicast communication or the second broadcast/multicast communication.
18. The method of claim 13 , further comprising transmitting control information that identifies a bandwidth part (BWP), wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is transmitted in accordance with the BWP.
19. The method of claim 13 , wherein the broadcast/multicast scheduling configuration identifies a frequency-hopping pattern within a bandwidth part (BWP) or a frequency-hopping pattern across multiple BWPs.
20. The method of claim 13 , wherein the broadcast/multicast scheduling configuration identifies a plurality of control resource set (CORESET) configurations and search space configurations for a bandwidth part (BWP), and wherein a CORESET configuration of the plurality of CORESET configurations identifies a beam configuration.
21. The method of claim 20 , further comprising transmitting control information that identifies a particular CORESET configuration and search space configuration of the plurality of CORESET configurations and search space configurations, wherein one or more of the first broadcast/multicast communication or the second broadcast/multicast communication is transmitted in accordance with the particular CORESET configuration and search space configuration.
22. The method of claim 13 , wherein the broadcast/multicast scheduling configuration identifies a mapping of unicast hybrid automatic repeat request (HARQ) process identifiers to broadcast/multicast HARQ process identifiers associated with one or more of the first broadcast/multicast communication or the second broadcast/multicast communication.
23. The method of claim 13 , wherein the broadcast/multicast scheduling configuration identifies a timeline configuration that indicates a first time duration between processing of the PDCCH and a reception of the first broadcast/multicast communication by a user equipment (UE), and a second time duration between the reception of the first broadcast/multicast communication and a transmission of acknowledgment or negative-acknowledgment feedback by the UE, and wherein each of the first time duration and the second time duration is different than a corresponding time duration for unicast transmissions.
24. A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors operatively coupled to the memory, the one or more processors configured to:
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 a plurality of radio network temporary identifiers (RNTIs) that are respectively associated with a plurality of beams;
receive a first broadcast/multicast communication, of the broadcast/multicast communications, associated with a broadcast/multicast control channel via a physical downlink shared channel in accordance with the broadcast/multicast scheduling configuration for the PDCCH,
the broadcast/multicast control channel being associated with a first set of RNTIs of the plurality of RNTIs; and
receive a second broadcast/multicast communication, of the broadcast/multicast communications, associated with a broadcast/multicast traffic channel via the PDSCH in accordance with the broadcast/multicast scheduling configuration for the PDCCH,
the broadcast/multicast traffic channel being associated with a second set of RNTIs of the plurality of RNTIs.
25. The UE of claim 24 , wherein the broadcast/multicast scheduling configuration identifies a mapping of unicast hybrid automatic repeat request (HARQ) process identifiers to broadcast/multicast HARQ process identifiers associated with one or more of the first broadcast/multicast communication or the second broadcast/multicast communication.
26. The UE of claim 24 , wherein the broadcast/multicast scheduling configuration identifies a plurality of time offsets associated with the plurality of beams.
27. The UE of claim 24 , wherein the broadcast/multicast scheduling configuration identifies a plurality of control resource set (CORESET) configurations and search space configurations for a bandwidth part (BWP), and wherein a CORESET configuration of the plurality of CORESET configurations identifies a beam configuration.
28. A network entity for wireless communication, comprising:
a memory; and
one or more processors operatively coupled to the memory, the one or more processors configured to:
transmit, a broadcast or a multicast (broadcast/multicast) scheduling configuration for a physical downlink control channel (PDCCH),
the broadcast/multicast scheduling configuration identifying, for broadcast/multicast communications, a plurality of radio network temporary identifiers (RNTIs) that are respectively associated with a plurality of beams; and
transmit a first broadcast/multicast communication, of the broadcast/multicast communications, associated with a broadcast/multicast control channel via a physical downlink shared channel in accordance with the broadcast/multicast scheduling configuration for the PDCCH,
the broadcast/multicast control channel being associated with a first set of RNTIs of the plurality of RNTIs; and
transmitting a second broadcast/multicast communication, of the broadcast/multicast communications, associated with a broadcast/multicast traffic channel via the PDSCH in accordance with the broadcast/multicast scheduling configuration for the PDCCH,
the broadcast/multicast traffic channel being associated with a second set of RNTIs of the plurality of RNTIs.
29. The network entity of claim 28 , wherein the broadcast/multicast scheduling configuration identifies a mapping of unicast hybrid automatic repeat request (HARQ) process identifiers to broadcast/multicast HARQ process identifiers associated with one or more of the first broadcast/multicast communication or the second broadcast/multicast communication.
30. The network entity of claim 28 , wherein the broadcast/multicast scheduling configuration identifies a plurality of control resource set (CORESET) configurations and search space configurations for a bandwidth part (BWP), and wherein a CORESET configuration of the plurality of CORESET configurations identifies a beam configuration.