Multi-synchronization signal block operation
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station (BS) may transmit a first set of synchronization signal block (SSB) burst sets with a first set of SSB parameters; and transmit a second set of SSB burst sets with a second set of SSB parameters, wherein the first set of SSB burst sets and the second set of SSB burst sets are transmitted in a common carrier. In some aspects, a user equipment (UE) may receive at least one SSB of the first set of SSB burst sets or the second set of SSB burst sets. Numerous other aspects are provided.
1. A base station (BS) for wireless communication, comprising:
a memory; and
one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:
transmit a first set of synchronization signal block (SSB) burst sets with a first set of SSB parameters, wherein the first set of SSB parameters includes a first subcarrier spacing; and
transmit a second set of SSB burst sets with a second set of SSB parameters, wherein the second set of SSB parameters includes a second subcarrier spacing, and wherein the first set of SSB burst sets and the second set of SSB burst sets are transmitted in a common carrier,
wherein a first SSB burst set of the first set of SSB burst sets and a second SSB burst set of the second set of SSB burst sets are located in a common frame, and
wherein the BS is configured to drop one of the first SSB burst set or the second SSB burst set in the common frame.
2. The BS of claim 1 , wherein the first set of SSB burst sets and the second set of SSB burst sets are transmitted in a common carrier such that at least one SSB burst set of the second set of SSB burst sets occurs during time resources between two consecutive SSB burst sets of the first set of SSB burst sets.
3. The BS of claim 1 , wherein the first set of SSB parameters and the second set of SSB parameters differ with regard to at least one parameter, and
wherein the at least one parameter is at least one of:
a frequency domain location,
a set of component channels,
whether an SSB is to be omitted in a concurrent frame,
an SSB burst set periodicity, or
a quantity of SSBs in each SSB burst set.
4. The BS of claim 1 , wherein the BS is configured to transmit the first SSB burst set and the second SSB burst set in the common frame.
5. The BS of claim 1 , wherein a first one or more SSBs of the first SSB burst set include a physical broadcast channel and a second one or more SSBs of the second SSB burst set do not include the physical broadcast channel.
6. A user equipment (UE) for wireless communication, comprising:
a memory; and
one or more processors operatively coupled to the memory, the memory and the one or more processors configured to:
identify a resource for receiving a synchronization signal block (SSB) of a particular SSB burst set, of a plurality of types of SSB burst sets,
wherein the plurality of types of SSB burst sets includes a first set of SSB burst sets with a first set of SSB parameters and a second set of SSB burst sets with a second set of SSB parameters, wherein the first set of SSB parameters includes a first subcarrier spacing and the second set of SSB parameters includes a second subcarrier spacing, and
wherein the first set of SSB burst sets and the second set of SSB burst sets are transmitted in a common carrier;
select, from among the first set of SSB burst sets and the second set of SSB burst sets, a particular SSB burst set, the particular SSB burst set being one of:
the first set of SSB burst sets for radio resource control (RRC) idle (IDLE) operation, or
the second set of SSB burst sets for RRC connected (CONNECTED) or RRC inactive (INACTIVE) operation; and
receive, in the resource, the SSB of the particular SSB burst set.
7. The UE of claim 6 , wherein the first set of SSB burst sets and the second set of SSB burst sets are transmitted in a common carrier such that at least one SSB burst set of the second set of SSB burst sets occurs during time resources between two consecutive SSB burst sets of the first set of SSB burst sets.
8. The UE of claim 6 , wherein the first set of SSB parameters and the second set of SSB parameters differ with regard to at least one parameter, and
wherein the at least one parameter is at least one of:
a frequency domain location,
a set of component channels,
whether an SSB is to be omitted in a concurrent frame,
an SSB burst set periodicity, or
a quantity of SSBs in each SSB burst set.
9. The UE of claim 6 , wherein a first SSB burst set of the first set of SSB burst sets and a second SSB burst set of the second set of SSB burst sets are located in a common frame.
10. The UE of claim 9 , wherein one of the first SSB burst set or the second SSB burst set is dropped in the common frame.
11. The UE of claim 6 , wherein a first one or more SSBs of the first SSB burst set include a physical broadcast channel and a second one or more SSBs of the second SSB burst set do not include the physical broadcast channel.
12. The UE of claim 6 , wherein the memory and the one or more processors, when selecting the particular SSB burst set, are configured to:
select the particular SSB burst set further based at least in part on a state of the UE and a type of the particular SSB burst set.
13. The UE of claim 6 , wherein the memory and the one or more processors, when selecting the particular SSB burst set, are configured to:
select the particular SSB burst set further based at least in part on a use case of information included in the particular SSB burst set and a type of the particular SSB burst set.
14. The UE of claim 6 ,
wherein the memory and the one or more processors, when selecting the particular SSB burst set, are configured to:
select the particular SSB burst set further based on one of:
the first set of SSB burst sets for relatively coarse time refinement, or
the second set of SSB burst sets for relatively fine time refinement.
15. A method of wireless communication performed by a base station (BS), comprising:
transmitting a first set of synchronization signal block (SSB) burst sets with a first set of SSB parameters; and
transmitting a second set of SSB burst sets with a second set of SSB parameters, wherein the first set of SSB burst sets and the second set of SSB burst sets are transmitted in a common carrier,
wherein a first SSB burst set of the first set of SSB burst sets and a second SSB burst set of the second set of SSB burst sets are located in a common frame, and
wherein the BS is configured to drop one of the first SSB burst set or the second SSB burst set in the common frame.
16. The method of claim 15 , wherein the first set of SSB burst sets and the second set of SSB burst sets are transmitted in a common carrier such that at least one SSB burst set of the second set of SSB burst sets occurs during time resources between two consecutive SSB burst sets of the first set of SSB burst sets.
17. The method of claim 15 , wherein the first set of SSB parameters and the second set of SSB parameters differ with regard to at least one parameter, and
wherein the at least one parameter is at least one of:
a frequency domain location,
a set of component channels,
whether an SSB is to be omitted in a concurrent frame,
an SSB burst set periodicity, or
a quantity of SSBs in each SSB burst set.
18. The method of claim 15 , wherein the BS is configured to transmit the first SSB burst set and the second SSB burst set in the common frame.
19. The method of claim 15 , wherein a first one or more SSBs of the first SSB burst set include a physical broadcast channel and a second one or more SSBs of the second SSB burst set do not include the physical broadcast channel.
20. A method of wireless communication performed by a user equipment (UE), comprising:
identifying a resource for receiving a synchronization signal block (SSB) of a particular SSB burst set, of a plurality of types of SSB burst sets,
wherein the plurality of types of SSB burst sets includes a first set of SSB burst sets with a first set of SSB parameters and a second set of SSB burst sets with a second set of SSB parameters, and
wherein the first set of SSB burst sets and the second set of SSB burst sets are transmitted in a common carrier;
selecting, from among the first set of SSB burst sets and the second set of SSB burst sets, a particular SSB burst set, the particular SSB burst set being one of:
the first set of SSB burst sets for radio resource control (RRC) idle (IDLE) operation, or
the second set of SSB burst sets for RRC connected (CONNECTED) or RRC inactive (INACTIVE) operation; and
receiving, in the resource, the SSB of the particular SSB burst set.
21. The method of claim 20 , wherein the first set of SSB burst sets and the second set of SSB burst sets are transmitted in a common carrier such that at least one SSB burst set of the second set of SSB burst sets occurs during time resources between two consecutive SSB burst sets of the first set of SSB burst sets.
22. The method of claim 20 , wherein the first set of SSB parameters and the second set of SSB parameters differ with regard to at least one parameter, and
wherein the at least one parameter is at least one of:
a frequency domain location,
a set of component channels,
whether an SSB is to be omitted in a concurrent frame,
an SSB burst set periodicity, or
a quantity of SSBs in each SSB burst set.
23. The method of claim 20 , wherein a first SSB burst set of the first set of SSB burst sets and a second SSB burst set of the second set of SSB burst sets are located in a common frame.
24. The method of claim 23 , wherein one of the first SSB burst set or the second SSB burst set is dropped in the common frame.