Conditional PSCell Configuration for Low-Signaling Cell Changes
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Solution Overview
Problem
Intra secondary node Conditional PSCell Change (CPC) results in heavy signaling load when secondary cell groups are frequently changed in the network.
Innovation Solution
Implementing conditional configuration information for secondary cell groups that supports both adding and changing primary secondary cells, reducing the maintenance burden and signaling load by allowing UE to evaluate and execute cell changes based on predefined conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Intra secondary node Conditional PSCell Change (CPC) is implemented, then cell change capability is improved, but signaling load increases when secondary cell groups are frequently changed
Solution Approach 1:
The patent applies preliminary action by pre-configuring conditional PSCell change information including candidate PSCell configurations and execution conditions before actual cell changes occur. The network device sends conditional configuration information in advance, allowing the terminal to evaluate and execute cell changes autonomously when conditions are met, avoiding repeated signaling exchanges during frequent cell changes.
Solution Approach 2:
The patent implements self-service by enabling the terminal to autonomously evaluate execution conditions and perform PSCell changes without continuous network intervention. Once conditional configuration information is received, the terminal independently monitors conditions and executes changes, reducing the need for network-side signaling control during frequent cell group changes.
2Adaptability or versatility
If frequent secondary cell group changes are performed, then network adaptability is improved, but maintenance burden increases
Solution Approach 1:
The patent reduces maintenance burden through preliminary configuration of conditional PSCell change information that covers multiple potential cell change scenarios. The pre-configured information includes candidate PSCell configurations and execution conditions that enable the terminal to handle frequent changes autonomously without requiring continuous network maintenance and reconfiguration.
Data Source
AI summary
A method for configuring and obtaining secondary cell group information, and a communications device are provided. The method includes: obtaining conditional configuration information of a secondary cell group, where the conditional configuration information of the secondary cell group includes configuration information used for a terminal to add or change a primary secondary cell; and performing a first operation based on the conditional configuration information of the secondary cell group, where the first operation includes an operation of adding the primary secondary cell, or the first operation includes the operation of adding the primary secondary cell and an operation of changing the primary secondary cell.