# US 12,120,598 B2 · Terminal apparatus, method, and integrated circuit

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- Number: US 12,120,598 B2
- Document ID: US12120598B2
- Status: Granted
- Kind: B2
- Application number: 17/690,578
- Filed: 2022-03-09
- Published: 2023-08-03
- Granted: 2024-10-15
- Earliest claimed: 2022-02-02
- Assignees: Sharp Kabushiki Kaisha
- Applicants: Sharp Kabushiki Kaisha
- Inventors: Takuma Kawano; Shohei Yamada; Hidekazu Tsuboi; Kyosuke Inoue
- Web page: https://patentgrep.com/patent/US12120598B2

## CPC

- H04W 36/00695: {using split of the control plane or user plane}
- H04W 48/16: Discovering, processing access restriction or access information
- H04W 36/362: {Conditional handover}
- H04W 76/27: Transitions between radio resource control [RRC] states
- H04W 76/15: Setup of multiple wireless link connections
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A terminal apparatus determines whether a candidate special cell (SpCell) associated with a conditional reconfiguration information element of an entry included in an entry list is identical to a special cell (SpCell) currently configured for the terminal apparatus, and does not cause an execution condition to be evaluated, the execution condition being included in the entry including the conditional reconfiguration information element of which the associated candidate SpCell is identical to the SpCell currently configured for the terminal apparatus.

## Claims

### Claim 1

A terminal apparatus for communicating with a base station apparatus, the terminal apparatus comprising:
a receiver configured to receive radio resource control (RRC) signaling transmitted from the base station apparatus; and
a processing unit configured to hold an entry list, wherein
the entry list includes one or more entries,
an entry of the one or more entries includes a conditional reconfiguration information element associated with one candidate special cell (SpCell) and one or more execution conditions,
the processing unit adds one or more entries to the entry list and/or modifies one or more entries of the entry list based on an entry addition/modification list included in information related to a conditional reconfiguration of the received RRC signaling, and
the processing unit further determines whether the candidate SpCell associated with the conditional reconfiguration information element of the entry is identical to an SpCell currently configured for the terminal apparatus, and causes an execution condition of the one or more execution conditions to not be evaluated, the execution condition being included in the entry including the conditional reconfiguration information element of which the associated candidate SpCell is identical to the SpCell currently configured for the terminal apparatus.

### Claim 2

A method of a terminal apparatus for communicating with a base station apparatus, the method comprising:
receiving radio resource control (RRC) signaling transmitted from the base station apparatus;
holding an entry list;
adding one or more entries to the entry list and/or modifying one or more entries of the entry list based on an entry addition/modification list included in information related to a conditional reconfiguration of the received RRC signaling; and further determining whether one candidate special cell (SpCell) associated with a conditional reconfiguration information element of an entry of the one or more entries is identical to a special cell (SpCell) currently configured for the terminal apparatus, and not causing an execution condition to not be evaluated, the execution condition being included in the entry including the conditional reconfiguration information element of which the associated candidate SpCell is identical to the SpCell currently configured for the terminal apparatus, wherein
the entry list includes one or more entries, and
the one entry includes the conditional reconfiguration information element associated with the candidate special cell (SpCell) and one or more execution conditions.

### Claim 3

An integrated circuit mounted on a terminal apparatus for communicating with a base station apparatus, the integrated circuit causing the terminal apparatus to perform:
receiving radio resource control (RRC) signaling transmitted from the base station apparatus;
holding an entry list;
adding one or more entries to the entry list and/or modifying one or more entries of the entry list based on an entry addition/modification list included in information related to a conditional reconfiguration of the received RRC signaling; and, further determining whether one candidate special cell (SpCell) associated with a conditional reconfiguration information element of an entry of the one or more entries is identical to a special cell (SpCell) currently configured for the terminal apparatus, and not causing an execution condition to be evaluated, the execution condition being included in the entry including the conditional reconfiguration information element of which the associated candidate SpCell is identical to the SpCell currently configured for the terminal apparatus, wherein
the entry list includes one or more entries, and
the one entry includes the conditional reconfiguration information element associated with the candidate special cell (SpCell) and one or more execution conditions.