Techniques and apparatuses for providing system information updates in a system using bandwidth parts
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a base station may determine updated system information for a user equipment (UE), wherein the UE is associated with an initial access bandwidth part (BWP) and a configured BWP; and transmit the updated system information to the UE using at least one of unicast signaling, multicast signaling, the configured BWP, or a particular BWP that is different from the configured BWP. Numerous other aspects are provided.
1. A method of wireless communication performed by a base station, comprising:
determining updated system information for a user equipment (UE),
wherein the UE is associated with an initial access bandwidth part (BWP) and a configured BWP; and
transmitting the updated system information to the UE using at least a particular BWP that is different from the initial access BWP and the configured BWP.
2. The method of claim 1 , wherein the updated system information is further transmitted using unicast signaling that uses at least one of downlink control information, a media access control (MAC) control element (CE), or radio resource control (RRC) signaling.
3. The method of claim 1 , wherein the updated system information is further transmitted using multicast signaling that uses at least one of downlink control information, a media access control (MAC) control element (CE), or radio resource control (RRC) signaling.
4. The method of claim 1 , wherein the updated system information is further transmitted using multicast signaling that uses a group downlink control information associated with a particular group radio network temporary identifier (RNTI).
5. The method of claim 1 , further comprising:
transmitting a message to configure the UE to switch to or monitor the particular BWP, wherein the particular BWP carries the updated system information.
6. The method of claim 5 , wherein the message is used to configure the UE to switch to or monitor the particular BWP for a particular length of time, and wherein the message is used to configure the UE to switch back to the configured BWP after the particular length of time.
7. The method of claim 5 , wherein the message is a paging message.
8. The method of claim 1 , wherein the updated system information is repeated in the configured BWP using a same periodicity as system information that is transmitted in the initial access BWP.
9. The method of claim 1 , wherein the updated system information is repeated in the configured BWP in a particular time window.
10. A base station 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:
determine updated system information for a user equipment (UE),
wherein the UE is associated with an initial access bandwidth part (BWP) and a configured BWP; and
transmit the updated system information to the UE using at least a particular BWP that is different from the initial access BWP and the configured BWP.
11. The base station of claim 10 , wherein the updated system information is further transmitted using unicast signaling that uses at least one of downlink control information, a media access control (MAC) control element (CE), or radio resource control (RRC) signaling.
12. The base station of claim 10 , wherein the updated system information is further transmitted using multicast signaling that uses at least one of downlink control information, a media access control (MAC) control element (CE), or radio resource control (RRC) signaling.
13. The base station of claim 10 , wherein the updated system information is further transmitted using multicast signaling that uses a group downlink control information associated with a particular group radio network temporary identifier (RNTI).
14. The base station of claim 10 , wherein the memory and the one or more processors are configured to:
transmit a message to configure the UE to switch to or monitor the particular BWP, wherein the particular BWP carries the updated system information.
15. The base station of claim 14 , wherein the message is used to configure the UE to switch to or monitor the particular BWP for a particular length of time, and wherein the message is used to configure the UE to switch back to the configured BWP after the particular length of time.
16. The base station of claim 14 , wherein the message is a paging message.
17. The base station of claim 10 , wherein the updated system information is repeated in the configured BWP using a same periodicity as system information that is transmitted in the initial access BWP.
18. The base station of claim 10 , wherein the updated system information is repeated in the configured BWP in a particular time window.
19. A method of wireless communication performed by a user equipment (UE), comprising:
receiving updated system information for the UE,
wherein the UE is associated with an initial access bandwidth part (BWP) and a configured BWP, and
wherein the updated system information is received using at least a particular BWP that is different from the initial access BWP and the configured BWP; and
processing the updated system information.
20. The method of claim 19 , wherein the updated system information is further received using unicast signaling that includes at least one of downlink control information, a media access control (MAC) control element (CE), or radio resource control (RRC) signaling.
21. The method of claim 19 , further comprising:
switching to or monitoring the particular BWP based at least in part on a received message, wherein the particular BWP carries the updated system information.
22. 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:
receive updated system information for the UE,
wherein the UE is associated with an initial access bandwidth part (BWP) and a configured BWP, and
wherein the updated system information is received using at least a particular BWP that is different from the initial access BWP and the configured BWP; and
process the updated system information.
23. The UE of claim 22 , wherein the updated system information is further received using unicast signaling that includes at least one of downlink control information, a media access control (MAC) control element (CE), or radio resource control (RRC) signaling.
24. The UE of claim 22 , wherein the memory and the one or more processors are configured to:
switch to or monitor the particular BWP based at least in part on a received message, wherein the particular BWP carries the updated system information.
25. The method of claim 1 , wherein a frequency center of the particular BWP is nearer to the configured BWP than to the initial access BWP.
26. The base station of claim 10 , wherein a frequency center of the particular BWP is nearer to the configured BWP than to the initial access BWP.
27. The method of claim 19 , wherein a frequency center of the particular BWP is nearer to the configured BWP than to the initial access BWP.
28. The UE of claim 22 , wherein a frequency center of the particular BWP is nearer to the configured BWP than to the initial access BWP.