PCell Reconfiguration Signaling for Reliable PSCell Switching
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Solution Overview
Problem
In multi-connection architectures, there is a risk that the target PSCell fails to receive the PSCell reconfiguration completion message during the switching process, leading to an inability to provide services to user equipment.
Innovation Solution
A PCell reconfiguration completion message is determined for a target primary cell and PSCell, including indication information to accurately identify the target PSCell and/or target secondary node, ensuring the message is transmitted to the correct node.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE performs PSCell switching in a multi-connection architecture, then the robustness and reliability of mobile communication is improved, but the target PSCell may fail to receive the PSCell reconfiguration completion message
Solution Approach 1:
The patent introduces the PCell as an intermediary node to forward the PSCell reconfiguration completion message from the UE to the target PSCell. When the UE sends the completion message to the PCell, the PCell identifies the target PSCell through indication information and forwards the message accordingly, ensuring reliable delivery even in complex multi-connection scenarios where direct communication might fail.
Solution Approach 2:
The patent segments the reconfiguration completion process into two distinct parts: the PCell reconfiguration completion message and the PSCell reconfiguration completion message. By separating these messages and handling them through different paths (UE→PCell and UE→target PSCell via PCell), the system ensures that each message can be independently tracked and delivered, reducing the risk of loss.
2Measurement precision
If indication information is added to identify the target PSCell, then the accuracy of message delivery is improved, but the complexity of the reconfiguration message increases
Solution Approach 1:
The indication information field in the PCell reconfiguration completion message is designed to serve multiple functions: it can identify the target PSCell, indicate the target secondary node, or provide both pieces of information depending on the scenario. This multi-functional design avoids the need for separate dedicated fields for each type of identification, thereby reducing overall message complexity while maintaining high identification accuracy.
Data Source
AI summary
Embodiments of the present disclosure provide an information processing method and apparatus, a device and a storage medium, a user equipment determines a PCell reconfiguration completion message according to a target primary cell PCell and a target primary secondary cell PSCell which are to be switched, where the PCell reconfiguration completion message includes a PSCell reconfiguration completion message and indication information, and the indication information is used to indicate the target PSCell and/or a target SN where the target PSCell is located; transmits a PCell reconfiguration completion message to a network device. In the embodiments of the 10 present disclosure, while the user equipment transmits the reconfiguration completion message, the identity of the target PSCell is indicated through an indication message, in this way, the target PCell can accurately transmit the PSCell reconfiguration completion message to the corresponding target PSCell, thereby further improving the reliability and robustness of mobile communication.