Granted Patent B2

US 12,684,423 · App. 18/303,820 · Granted Jul 14, 2026

Inventors: Masato Fujishiro (Yokohama, JP); Henry Chang (San Diego, CA)

Assignee: KYOCERA Corporation

H04W36/0007

Abstract

Claims (13)

1 . A communication control method used in a mobile communication system for providing a multicast broadcast service (MBS) from a base station to user equipment, the communication control method comprising:

receiving, by the user equipment from a cell, MBS control information used to receive MBS data;

configuring the user equipment with the MBS control information so that the user equipment receives an MBS multicast session in an RRC inactive state;

performing, by the user equipment in an RRC (Radio Resource Control) inactive state, cell reselection to another cell; and

determining, by the user equipment, whether the MBS control information received from the cell is available in the another cell, wherein

the user equipment in the RRC inactive state is configured to transition to an RRC connected state in the another cell in response to determining that the MBS control information received from the cell is not available in the another cell.

2 . A user equipment comprising:

a receiver configured to receive, from a cell, multicast broadcast service (MBS) control information used to receive MBS data; and

a processor configured to:

configure the user equipment with the MBS control information so that the user equipment receives an MBS multicast session in an RRC inactive state;

perform cell reselection to another cell while the user equipment is in an RRC (Radio Resource Control) inactive state;

determine whether the MBS control information received from the cell is available in the another cell; and

in response to determining that the MBS control information received from the cell is not available in the another cell, transition the user equipment from the RRC inactive state to an RRC connected state.

Assignments (1)

Continuity (3)

References Cited (14)