Handover in dual connectivity to a primary base station and a secondary base station

US12432781B2 · kind B2 · utility

Assignee

• Apple Inc. · US

Inventors

• Yang Tang · Pleasanton, US
• Qiming Li · Beijing, CN
• Manasa Raghavan · Sunnyvale, US
• Xiang Chen · Campbell, US
• Huaning Niu · San Jose, US
• Dawei Zhang · Saratoga, US
• Hong He · Sunnyvale, US
• Fangli Xu · Beijing, CN
• Yushu Zhang · Beijing, CN
• Jie Cui · San Jose, US

Key dates

• Filing date: Apr 1, 2021
• Grant date: Sep 30, 2025
• Expiry date: Apr 1, 2041

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04W74/0833
• WIPO field: Digital communication
• WIPO sector: Electrical engineering

Abstract

Some aspects of this disclosure relate to apparatuses and methods for implementing techniques for a user equipment (UE) having dual connectivity. The UE can communicate with a first primary base station in a first primary cell (PCell) and a second primary base station in a second PCell. The UE has dual connectivity in the second PCell using a first wireless carrier to communicate with the second primary base station and a second wireless carrier to communicate with a secondary base station in a primary secondary cell (PSCell). The UE receives a message from the first primary base station to perform a handover procedure. The UE performs the handover procedure according to the received message, and further perform an addition procedure for the secondary base station in parallel with the handover procedure. A start time of the addition procedure can be before an end time of the handover procedure.