Power-saving active BWP

Patent metadata

Field	Value
Publication number	US-12556348-B2
Application number	US-202117197297-A
Country	US
Kind code	B2
Filing date	Mar 10, 2021
Priority date	Mar 28, 2019
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A wireless device receives configuration parameters indicating a non-dormant bandwidth part (BWP) for transitioning to a non-dormant state of a cell. The wireless device activates a first BWP as an active BWP in response to activation of the cell. The wireless device activates the non-dormant BWP as the active BWP in response to transitioning the cell from a dormant state to the non-dormant state.

First claim

What is claimed is:

1 . A method comprising:
receiving at least one radio resource control (RRC) message,
wherein the at least one RRC comprises configuration parameters,
wherein the configuration parameters indicate a dormant bandwidth part (BWP) and a non-dormant bandwidth part;
activating the dormant BWP as an active BWP in response to a medium access control command indicating activation of the cell; activating the non-dormant BWP as the active BWP in response to receiving downlink control information (DCI) indicating a transition to an increased power level; and activating the dormant BWP as the active BWP to place the cell in a dormant state in response to receiving downlink control information (DCI) indicating a transition to a decreased power level.

2 . The method of claim 1 , wherein the cell, in the dormant state, stops monitoring for a downlink control information comprising a resource assignment for the cell.

3 . The method of claim 1 , further comprising stopping monitoring for a downlink control information comprising a resource assignment for the cell, in response to the cell being in the dormant state.

4 . The method of claim 1 , further comprising:
receiving a downlink control information comprising a field indicating to transition the cell from the dormant state to the non-dormant state; and wherein the configuration parameters comprise a dormant BWP index, from a plurality of BWP indices, indicating a transition of the cell from the non-dormant state to the dormant state.

5 . The method of claim 1 , wherein
the dormant BWP is a first downlink BWP of the cell; and the non-dormant BWP is a second downlink BWP of the cell.

6 . The method of claim 1 , wherein the configuration parameters for the non-dormant BWP comprise a second BWP index, from a plurality of BWP indices, indicating a transition of the cell from the dormant state to the non-dormant state of the cell.

7 . The method of claim 6 , wherein the configuration parameters for the dormant BWP comprise a dormant BWP index, from the plurality of BWP indices, indicating a transition of the cell from the non-dormant state to the dormant state.

8 . The method of claim 7 , wherein the dormant BWP of the cell is not configured with a search space.

9 . A computer program stored on a non-transitory computer-readable storage medium, wherein the computer program, when executed by a processor, performs the method as claimed in claim 1 .

10 . A wireless device comprising a processor circuit and memory storing instructions that, when executed by the processor, cause the wireless device to perform the method of the claim 1 .

11 . A method comprising:
transmitting at least one radio resource control (RRC) message, wherein the at least one RRC message comprises configuration parameters indicating a dormant bandwidth part (BWP) and a non-dormant bandwidth part; activating the dormant BWP as an active BWP in response to a medium access control command indicating activation of the cell; activating the non-dormant BWP as the active BWP in response to receiving downlink control information (DCI) indicating a transition to an increased power level; and activating the dormant BWP as the active BWP to place the cell in a dormant state in response to receiving downlink control information (DCI) indicating a transition to a decreased power level.

12 . The method of claim 11 , wherein the cell, in the dormant state, stops monitoring for a downlink control information comprising a resource assignment for the cell.

13 . The method of claim 11 , further comprising stopping monitoring for a downlink control information comprising a resource assignment for the cell, in response to the cell being in the dormant state.

14 . The method of claim 11 , further comprising:
transmitting a downlink control information comprising a field indicating to transition the cell from the dormant state to the non-dormant state; wherein the configuration parameters for the dormant BWP comprise a dormant BWP index, from a plurality of BWP indices, indicating a transition of the cell from the non-dormant state to the dormant state.

15 . The method of claim 11 , wherein the configuration parameters for the non-dormant BWP comprise a non-dormant BWP index, from a plurality of BWP indices, indicating a transition of the cell from the dormant state to the non-dormant state of the cell.

16 . The method of claim 15 , wherein the configuration parameters for the dormant BWP comprises a dormant BWP index, from the plurality of BWP indices, indicating a transition of the cell from the non-dormant state to the dormant state.

17 . The method of claim 16 , wherein the dormant BWP of the cell is not configured with a search space.

18 . A computer program stored on a non-transitory computer-readable storage medium, wherein the computer program, when executed on a processor, performs the method as claimed in claim 11 .

19 . A base station comprising at least one processor and memory storing instructions that, when executed by the at least one processor, cause the base station to perform the method of the claim 11 .

Assignees

• Koninklijke Philips Nv

Inventors

• Yi Yunjung
• Dinan Esmael Hejazi
• Zhou Hua
• Park Kyungmin
• Jeon Hyoungsuk
• Babaei Alireza
• Xu Kai

Classifications

• H04W72/0453

  Resources in frequency domain, e.g. a carrier in FDMA · CPC title

• H04W76/10

  Connection setup · CPC title

• H04W76/27

  Transitions between radio resource control [RRC] states · CPC title

• H04W52/0212

  managed by the network, e.g. network or access point is leader and terminal is follower · CPC title

• H04W72/0457

  Variable allocation of band or rate · CPC title