IP Library › Granted Patent US 12,707,520
Granted Patent B2
US 12,707,520 · App. 18/396,604 · Granted Aug 11, 2026

Master node, communication control method, and communication apparatus

Inventors: Daiki Maemoto (Kariya-city, JP); Hideaki Takahashi (Kariya-city, JP)
Assignees: DENSO CORPORATION; TOYOTA JIDOSHA KABUSHIKI KAISHA
H04W76/15H04W28/12H04W76/20H04W80/02
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Quick Facts
Patent No.
US 12,707,520
App. No.
18/396,604
Filed
Dec 26, 2023
Granted
Aug 11, 2026
Kind
B2
Art Unit
2643
USPC
370/329
Abstract

A master node is connected to a communication apparatus together with a secondary node using dual connectivity. The master node comprises a controller having a packet data convergence protocol (PDCP) entity and a first radio link control (RLC) entity, the PDCP entity outputting a PDCP protocol data unit (PDU) to the first RLC entity and outputting a duplication of the PDCP PDU to a second RLC entity of the secondary node. The PDCP entity deactivates the duplication of the PDCU PDU for the second RLC entity in a case where a secondary cell group associated with the secondary node is deactivated.

Claims (12)

1 . A master node that is connected to a communication apparatus and is connected to a secondary node using dual connectivity, the master node comprising:

a controller including a packet data convergence protocol (PDCP) entity and a first radio link control (RLC) entity, the PDCP entity outputting a PDCP protocol data unit (PDU) to the first RLC entity and outputting a duplication of the PDCP PDU to a second RLC entity of the secondary node; and

a transmitter configured to transmit, to the communication apparatus, a Radio Resource Control (RRC) message including first information configuring the duplication of the PDCP PDU and second information configuring deactivation of a secondary cell group associated with the secondary node;

wherein the duplication of the PDCP PDU for the second RLC entity is deactivated in a case where the secondary cell group, including a serving cell activated for a logical channel associated with the second RLC entity, is deactivated based on the second information.

2 . A communication method in a master node that is connected to a communication apparatus and is connected to a secondary node using dual connectivity, the master node including a packet data convergence protocol (PDCP) entity and a first radio link control (RLC) entity, the communication control method comprising:

causing the PDCP entity to output a PDCP protocol data unit (PDU) to the first RLC entity and output a duplication of the PDCP PDU to a second RLC entity of the secondary node; and

transmitting, to the communication apparatus, a Radio Resource Control (RRC) message including first information configuring the duplication of the PDCP PDU and second information configuring deactivation of a secondary cell group associated with the secondary node;

wherein the duplication of the PDCP PDU for the second RLC entity is deactivated in a case where the secondary cell group, including a serving cell activated for a logical channel associated with the second RLC entity, is deactivated based on the second information.

3 . A communication apparatus that is connected to a master node and is connected to a secondary node using dual connectivity, the communication apparatus comprising:

a controller configured to control reception of a packet data convergence protocol (PDCP) protocol data unit (PDU) and a PDCP PDU which is duplicated; and

a communicator configured to receive a Radio Resource Control (RRC) message including first information configuring the duplication of the PDCP PDU and second information configuring a deactivation of a secondary cell group associated with the secondary node;

wherein the duplication of the PDCU PDU for the second RLC entity is deactivated in a case where the secondary cell group, including a serving cell activated for a logical channel associated with the second RLC entity, is deactivated based on the second information.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 9, 2024
From: MAEMOTO, DAIKI; TAKAHASHI, HIDEAKI
To: DENSO CORPORATION; TOYOTA JIDOSHA KABUSHIKI KAISHA
Reel/Frame 066068/0898 →
Priority Claims (1)
JP 2021-107721 · Jun 29, 2021 · national
Continuity (2)
Continuation PCTJP2022025657 · Jun 28, 2022
Related Publication 20240129979A1 · Apr 18, 2024
References Cited (35)
US 12069757B2 · Mochizuki et al. · 2024 [cited by applicant]
US 20200120569A1 · Baek et al. · 2020 [cited by applicant]
US 20200170072A1 · Xiao et al. · 2020 [cited by applicant]
US 20210345173A1 · Uchino et al. · 2021 [cited by applicant]
EP 3606134B1 · 2021 [cited by examiner]
WO 2019031490A1 · 2019 [cited by applicant]
WO 2020090072A1 · 2020 [cited by applicant]
WO WO2021155947A1 · 2021 [cited by examiner]
WO WO2022030579A1 · 2022 [cited by examiner]
R2-2106023—Efficient SCG (de)activation, 3GPP TSG-RAN WG2 #114-e, Electronic meeting, May 19-27, 2021, pp. 1-10. [cited by applicant]
R2-2105829, UE behaviour in deactivated SCG, 3GPP TSG-RAN WG2 Meeting #114-e, Online, May 19-27, 2021, pp. 1-4. [cited by applicant]
R2-2105064_Mobility for deactivated SCG, 3GPP TSG-RAN WG2 #114-e, Electronic meeting, May 19-27, 2021, pp. 1-4. [cited by applicant]
R2-2103808—UE measurements and reporting in deactivated SCG, 3GPP TSG-RAN WG2 #113bis-e, Electronic meeting, Apr. 12, 2021-Apr. 20, 2021, pp. 1-10. [cited by applicant]
R2-2103893, Qualcomm Incorporated, UE measurements and reporting in deactivated SCG, 3GPP TSG-RAN WG2 Meeting #113-bis-e, Online, Apr 12-Apr. 20, 2021, pp. 1-9. [cited by applicant]
R2-2103807—SCG deactivation procedures, 3GPP TSG-RAN WG2 #113bis-e, Electronic meeting, Apr. 12-20, 2021, pp. 1-10. [cited by applicant]
R2-2104316-Summary of AI 8.2.2.2: UE measurements and reporting in deactivated SCG, 3GPP TSG-RAN WG2 Meeting #113 bis electronic, Online, Apr. 12-Apr. 20, 2021, pp. 1-7. [cited by applicant]
R2-2103979, Huawei, HiSilicon, SCG activation, 3GPP TSG-RAN WG2 Meeting #113b-e, Online, Apr. 12-Apr. 20, 2021, pp. 1-6. [cited by applicant]
R2-2103977, Huawei, HiSilicon, SCG deactivation, 3GPP TSG-RAN WG2 Meeting #113bis-e, Online, Apr. 4-12, 2021, pp. 1-2. [cited by applicant]
R2-2104315, Huawei, HiSilicon, Summary of AI 8.2.2.1: Deactivation of SCG, 3GPP TSG-RAN WG2 Meeting #113bis-e, Online, Apr. 4-12, 2021, pp. 1-5. [cited by applicant]
RP-201040, Revised WID on Further Multi-RAT Dual-Connectivity enhancements, 3GPP TSG RAN Meeting #88e, Electronic Meeting, Jun. 29-Jul. 3, 2020, pp. 1-4. [cited by applicant]
3GPP TS 38.331 V16.0.0, (Mar. 2020), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Radio Resource Control (RRC) protocol specification (Release 16), pp. 1-835. [cited by applicant]
3GPP TS 38.323 V16.0.0 (Mar. 2020), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Packet Data Convergence Protocol (PDCP) specification (Release 16), pp. 1-37. [cited by applicant]
3GPP TS 38.321 V16.0.0, (Mar. 2020), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Medium Access Control (MAC) protocol specification (Release 16), pp. 1-141. [cited by applicant]
3GPP TS 38.300 V16.0.0, (Dec. 2019), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; NR and NG-RAN Overall Description; Stage 2 (Release 16), pp. 1-101. [cited by applicant]
3GPP TS 38.213 V16.0.0, (Dec. 2019), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Physical layer procedures for control (Release 16), pp. 1-146. [cited by applicant]
3GPP TS 38.133 V16.0.0_cover, (Jun. 2019), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; NR; Requirements for support of radio resource management (Release 16), pp. 1-16. [cited by applicant]
3GPP TS 38.133 V16.0.0_s0-11, (Jun. 2019), pp. 1-170. [cited by applicant]
3GPP TS 38.133 V16.0.0_sA.1-A.5, (Jun. 2019), Annex A (normative): Test Cases, Purpose of annex, pp. 1-375. [cited by applicant]
3GPP TS 38.133 V16.0.0_sA.6-A.8, (Jun. 2019), NR standalone tests with all NR cells in FR1, pp. 1-423. [cited by applicant]
3GPP TS 38.133 V16.0.0-sB.1-XX, (Jun. 2019), Annex B (normative): Conditions for RRM requirements applicability for operating bands, Conditions for NR RRC_IDLE state mobility, pp. 1-15. [cited by applicant]
3GPP TS 37.340 V16.5.0, (Mar. 2021), 3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) and NR; Multi-connectivity; Stage 2 (Relea… [cited by applicant]
R2-2204621, Qualcomm Incorporated, 3GPP TSG-RAN WG2 Meeting #118-e, Online, May 9-May 20, 2022, pp. 1-9. [cited by applicant]
3GPP RAN WG2 Meeting #114-e, R2-2105797, “Activation and Deactivation of SCG,” InterDigital Inc., May 17-29, 2021. [cited by applicant]
3GPP TSG-RAN WG2 #114-e, R2-2106336, “UE behavior for SCG deactivation,” MediaTek Inc., dated May 19-27, 2021. [cited by applicant]
3GPP TSG-RAN WG2 Meeting #114 electronic, R2-2106287, “Discussion for UE behaviour in deactivated SCG,” Sharp, dated May 19-27, 2021. [cited by applicant]