Granted Patent B2

US 12,633,992 · App. 17/915,951 · Granted May 19, 2026

Inventor: Sangwon Kim (Seoul, KR)

Assignee: LG ELECTRONICS INC.

H04B7/06952H04B7/088H04W16/28H04W84/06

Abstract

Claims (41)

1 . A method comprising:

receiving, by a wireless device from a certain cell, a beam group configuration including mapping information between beams and beam groups used by the certain cell;

selecting, by the wireless device, a first beam as a serving beam of the certain cell;

identifying, by the wireless device, a first beam group of the first beam based on an index of a reference signal related to the first beam;

receiving, by the wireless device from the first beam of the certain cell, a first system information message including system information specific to the first beam group;

changing, by the wireless device, the serving beam from the first beam to a second beam while camping on the certain cell;

identifying, by the wireless device, a second beam group of the second beam based on an index of a reference signal related to the second beam;

determining, by the wireless device, whether the first beam group is different from the second beam group; and

based on determining that the first beam group is not the same as the second beam group:

initiating, by the wireless device, a system information acquisition procedure for the system information specific to the second beam group, while camping on the certain cell;

transmitting, by the wireless device to the certain cell, a system information request message for the system information specific to the second beam group; and

receiving, by the wireless device from the certain cell, a second system information message including system information specific to the second beam group.

2 . The method of claim 1 , wherein the reference signal includes (1) synchronization signals (SS) and/or physical broadcast channel (PBCH block, and/or (2) Channel State Information Reference Signal (CSI-RS).

3 . The method of claim 1 , wherein the wireless device is in communication with at least one of a user equipment, a network, or an autonomous vehicle other than the wireless device.

4 . A wireless device comprising:

a transceiver;

a memory; and

at least one processor operatively coupled to the transceiver and the memory, and adapted to perform operations, the operations comprising:

receiving, from a certain cell, a beam group configuration including mapping information between beams and beam groups used by the certain cell;

selecting a first beam as a serving beam of the certain cell;

identifying a first beam group of the first beam based on an index of a reference signal related to the first beam;

receiving, from the first beam of the certain cell, a first system information message including system information specific to the first beam group;

changing the serving beam from the first beam to a second beam while camping on the certain cell;

identifying a second beam group of the second beam based on an index of a reference signal related to the second beam;

determining whether the first beam group is different from the second beam group; and

based on determining that the first beam group is not the same as the second beam group:

initiating a system information acquisition procedure for the system information specific to the second beam group, while camping on the certain cell;

transmitting, to the certain cell, a system information request message for the system information specific to the second beam group; and

receiving, from the certain cell, a second system information message including system information specific to the second beam group.

5 . A non-transitory computer-readable medium having stored thereon a plurality of instructions, which, when executed by a processor of a wireless device, cause the wireless device to perform operations, the operations comprising:

receiving, from a certain cell, a beam group configuration including mapping information between beams and beam groups used by the certain cell;

selecting a first beam as a serving beam of the certain cell;

identifying a first beam group of the first beam based on an index of a reference signal related to the first beam;

receiving, from the first beam of the certain cell, a first system information message including system information specific to the first beam group;

changing the serving beam from the first beam to a second beam while camping on the certain cell;

identifying a second beam group of the second beam based on an index of a reference signal related to the second beam;

determining whether the first beam group is different from the second beam group; and

based on determining that the first beam group is not the same as the second beam group:

initiating a system information acquisition procedure for the system information specific to the second beam group, while camping on the certain cell;

transmitting, to the certain cell, a system information request message for the system information specific to the second beam group; and

receiving, from the certain cell, a second system information message including system information specific to the second beam group.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (15)