IP Library › Granted Patent US 12,193,097
Granted Patent B2
US 12,193,097 · App. 17/626,591 · Granted Jan 7, 2025

Terminal apparatus, base station apparatus, and method

Inventors: Takako Hori (Sakai, JP); Hidekazu Tsuboi (Sakai, JP); Shohei Yamada (Sakai, JP)
Assignee: SHARP KABUSHIKI KAISHA
H04W76/20H04W36/0061H04W36/185
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Quick Facts
Patent No.
US 12,193,097
App. No.
17/626,591
Granted
Jan 7, 2025
Kind
B2
Abstract

A terminal apparatus includes a receiver configured to receive, from the base station apparatus, an RRC reconfiguration message including a DRB configuration, and a processing unit, wherein the processing unit performs, based on inclusion of a first parameter in the DRB configuration, configuration of a PDCP entity of a DRB corresponding to the DRB configuration, the configuration being related to a DAPS handover.

Claims (23)

1. A terminal apparatus that communicates with a base station apparatus, the terminal apparatus comprising:

a receiver configured to receive an RRC (Radio Resource Control) reconfiguration message including a first DRB (Data Radio Bearer) configuration and a second DRB configuration from the base station apparatus; and

a processor, wherein

the processor is configured to:

not configure a first configuration to a first PDCP (Packet Data Convergence Protocol) entity of a first DRB corresponding to the first DRB configuration in a case that a first parameter is not included in the first DRB configuration; and

configure the first configuration to a second PDCP entity of a second DRB corresponding to the second DRB configuration in a case that the first parameter is included in the second DRB configuration, and

the first configuration is a configuration for a handover in which transmission and/or reception of user data in the target cell with continued transmission and/or reception of user data in the source cell.

2. The terminal apparatus according to claim 1 , wherein

the first parameter indicates that the handover in which transmission and/or reception of user data in the target cell with continued transmission and/or reception of user data in the source cell is applied to the DRB.

3. A base station apparatus that communicates with a terminal apparatus, the base station apparatus comprising:

a transmitter configured to transmit an RRC (Radio Resource Control) reconfiguration message including a first DRB (Data Radio Bearer) configuration and a second DRB configuration to the terminal apparatus; and

a processor, wherein

the processor is configured to:

not configure a first configuration to a first PDCP (Packet Data Convergence Protocol) entity of a first DRB corresponding to the first DRB configuration in a case that a first parameter is not included in the first DRB configuration; and

configure the first configuration to a second PDCP entity of a second DRB corresponding to the second DRB configuration in a case that the first parameter is included in the second DRB configuration, and

the first configuration is a configuration for a handover in which transmission and/or reception of user data in the target cell with continued transmission and/or reception of user data in the source cell.

4. The base station apparatus according to claim 2 , wherein

the first parameter indicates that the handover in which transmission and/or reception of user data in the target cell with continued transmission and/or reception of user data in the source cell is applied to the DRB.

5. A method for a terminal apparatus that communicates with a base station apparatus, the method comprising:

receiving an RRC (Radio Resource Control) reconfiguration message including a first DRB (Data Radio Bearer) configuration and a second DRB configuration from the base station apparatus;

not configuring a first configuration to a first PDCP (Packet Data Convergence Protocol) entity of a first DRB corresponding to the first DRB configuration in a case that a first parameter is not included in the first DRB configuration; and

configuring the first configuration to a second PDCP entity of a second DRB corresponding to the second DRB configuration in a case that the first parameter is included in the second DRB configuration, wherein

the first configuration is a configuration for a handover in which transmission and/or reception of user data in the target cell with continued transmission and/or reception of user data in the source cell.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 12, 2022
From: HORI, TAKAKO; TSUBOI, HIDEKAZU; YAMADA, SHOHEI
To: SHARP KABUSHIKI KAISHA
Reel/Frame 058631/0913 →
Priority Claims (1)
JP 2019-132002 · Jul 17, 2019 · national
Continuity (1)
Related Publication 20220386201A1 · Dec 1, 2022
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Cited By (1)
US 12,401,561