IP Library › Granted Patent US 12696249
Granted Patent B2
US 12696249 · App. 18/048,492 · Granted Jul 28, 2026

Bandwidth part switching techniques for network power savings

Inventors: Ahmed Attia Abotabl (San Diego, CA); Marwen Zorgui (San Diego, CA); Ahmed Elshafie (San Diego, CA); Hung Dinh Ly (San Diego, CA)
Assignee: QUALCOMM Incorporated
H04W72/0453H04W8/24
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Quick Facts
Patent No.
US 12696249
App. No.
18/048,492
Granted
Jul 28, 2026
Kind
B2
Abstract

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive an indication of parameters associated with a temporary bandwidth part (BWP) switch from a first BWP to a second BWP. The parameters may include a time duration for the temporary BWP switching procedure, a network antenna configuration for the second BWP, transmission parameters for communications scheduled in the second BWP, or a combination thereof. The UE may switch from the first BWP to the second BWP in accordance with the temporary BWP switching procedure and communicate with a network entity using the indicated parameters. For example, the UE may receive one or more downlink messages or transmit one or more uplink messages in accordance with the indicated parameters. Thereafter, the UE may switch from the second BWP to a third BWP in accordance with the temporary BWP switching procedure.

Claims (60)

1 . An apparatus for wireless communication at a user equipment (UE) in a wireless network, comprising:

one or more memories; and

one or more processors coupled with the one or more memories and configured to cause the UE to:

receive, via a first bandwidth part, an indication of one or more parameters associated with a temporary bandwidth part switch procedure, the one or more parameters to be used for communications scheduled in a second bandwidth part that is different from the first bandwidth part, wherein the indication of the one or more parameters comprises an instance of downlink control information that indicates a time duration for a temporary bandwidth part switch from the first bandwidth part to the second bandwidth part;

communicate with a network entity via the second bandwidth part based at least in part on a switch from the first bandwidth part to the second bandwidth part in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure; and

communicate with the network entity via a third bandwidth part based at least in part on a switch from the second bandwidth part to the third bandwidth part in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure.

2 . The apparatus of claim 1 , wherein the one or more parameters indicate a quantity of symbols, slots, frames, or milliseconds for the apparatus to monitor the second bandwidth part in accordance with the temporary bandwidth part switch procedure.

3 . The apparatus of claim 1 , wherein the one or more parameters indicate at least one of an antenna configuration, a transmit power configuration, a transmit beam configuration, or a receive beam configuration for the communications scheduled in the second bandwidth part.

4 . The apparatus of claim 1 , wherein, to receive the indication of the one or more parameters, the one or more processors are configured to cause the UE to:

receive, via the first bandwidth part, a control message that indicates the second bandwidth part is a temporary bandwidth part.

5 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:

transmit an uplink message to the network entity via the second bandwidth part in accordance with an uplink grant provided by the network entity.

6 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:

receive a downlink message from the network entity via the second bandwidth part in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure.

7 . The apparatus of claim 6 , wherein the downlink message comprises a demodulation reference signal sequence that indicates the second bandwidth part is a temporary bandwidth part.

8 . The apparatus of claim 1 , wherein, to receive the indication of the one or more parameters, the one or more processors are configured to cause the UE to:

receive a radio resource control message that indicates a configuration for one or more of the first bandwidth part, the second bandwidth part, and the third bandwidth part.

9 . The apparatus of claim 1 , wherein, to receive the indication of the one or more parameters, the one or more processors are configured to cause the UE to:

receive an instance of downlink control information that indicates whether a bandwidth part switch from the first bandwidth part to the second bandwidth part is the temporary bandwidth part switch.

10 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:

receive, via the second bandwidth part, at least one downlink message within the time duration indicated by the instance of downlink control information.

11 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:

transmit, via the second bandwidth part, at least one uplink transmission within the time duration indicated by the instance of downlink control information.

12 . The apparatus of claim 1 , wherein the one or more parameters indicate the time duration for the temporary bandwidth part switch per bandwidth part or per cell.

13 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:

switch from the second bandwidth part to the third bandwidth part within a time gap indicated by the one or more parameters associated with the temporary bandwidth part switch procedure.

14 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:

receive information associated with a downlink message scheduled in the second bandwidth part, wherein the information indicates that the second bandwidth part is a temporary bandwidth part.

15 . The apparatus of claim 14 , wherein the information indicates one or more of a modulation and coding scheme, a quantity of layers, a time domain resource allocation index, or a frequency domain resource allocation index associated with the downlink message scheduled in the second bandwidth part.

16 . The apparatus of claim 14 , wherein the information indicates a time duration for the apparatus to monitor the temporary bandwidth part.

17 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:

transmit a message that indicates one or more of a capability of the apparatus to perform a temporary bandwidth part switch, a quantity of bandwidth parts supported for the temporary bandwidth part switch, or a minimum time duration supported for the temporary bandwidth part switch.

18 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:

transmit an indication of a channel state information report based at least in part on one or more channel state information reference signals received via the second bandwidth part, wherein the channel state information report is generated in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure.

19 . The apparatus of claim 1 , wherein the one or more processors are further configured to cause the UE to:

receive a downlink message via the second bandwidth part in accordance with the temporary bandwidth part switch procedure; and

decode the downlink message based at least in part on the one or more parameters associated with the temporary bandwidth part switch procedure.

20 . The apparatus of claim 1 , wherein the third bandwidth part comprises the first bandwidth part.

21 . The apparatus of claim 1 , wherein the apparatus further comprises one or more interfaces coupled with one or more antennas.

22 . A method for wireless communication at a user equipment (UE), comprising:

receiving, via a first bandwidth part, an indication of one or more parameters associated with a temporary bandwidth part switch procedure, the one or more parameters to be used for communications scheduled in a second bandwidth part that is different from the first bandwidth part, wherein the indication of the one or more parameters comprises an instance of downlink control information that indicates a time duration for a temporary bandwidth part switch from the first bandwidth part to the second bandwidth part;

communicating with a network entity via the second bandwidth part based at least in part on a switch from the first bandwidth part to the second bandwidth part in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure; and

communicating with the network entity via a third bandwidth part based at least in part on a switch from the second bandwidth part to the third bandwidth part in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure.

23 . The method of claim 22 , wherein the one or more parameters indicate a quantity of symbols, slots, frames, or milliseconds for the UE to monitor the second bandwidth part in accordance with the temporary bandwidth part switch procedure.

24 . The method of claim 22 , wherein the one or more parameters indicate at least one of an antenna configuration, a transmit power configuration, a transmit beam configuration, or a receive beam configuration for the communications scheduled in the second bandwidth part.

25 . The method of claim 22 , wherein, receiving the indication of the one or more parameters comprises:

receiving, via the first bandwidth part, a control message that indicates the second bandwidth part is a temporary bandwidth part.

26 . The method of claim 22 , further comprising:

transmitting an uplink message to the network entity via the second bandwidth part in accordance with an uplink grant provided by the network entity.

27 . The method of claim 22 , further comprising:

receiving a downlink message from the network entity via the second bandwidth part in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure.

28 . The method of claim 27 , wherein the downlink message comprises a demodulation reference signal sequence that indicates the second bandwidth part is a temporary bandwidth part.

29 . A user equipment (UE) for wireless communication, comprising:

means for receiving, via a first bandwidth part, an indication of one or more parameters associated with a temporary bandwidth part switch procedure, the one or more parameters to be used for communications scheduled in a second bandwidth part that is different from the first bandwidth part, wherein the indication of the one or more parameters comprises an instance of downlink control information that indicates a time duration for a temporary bandwidth part switch from the first bandwidth part to the second bandwidth part;

means for communicating with a network entity via the second bandwidth part based at least in part on a switch from the first bandwidth part to the second bandwidth part in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure; and

means for communicating with the network entity via a third bandwidth part based at least in part on a switch from the second bandwidth part to the third bandwidth part in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure.

30 . A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors to:

receive, via a first bandwidth part, an indication of one or more parameters associated with a temporary bandwidth part switch procedure, the one or more parameters to be used for communications scheduled in a second bandwidth part that is different from the first bandwidth part, wherein the indication of the one or more parameters comprises an instance of downlink control information that indicates a time duration for a temporary bandwidth part switch from the first bandwidth part to the second bandwidth part;

communicate with a network entity via the second bandwidth part based at least in part on a switch from the first bandwidth part to the second bandwidth part in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure; and

communicate with the network entity via a third bandwidth part based at least in part on a switch from the second bandwidth part to the third bandwidth part in accordance with the one or more parameters associated with the temporary bandwidth part switch procedure.