Single Configuration for Multiple Conditional PSCell Changes
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communications, frequent conditional primary secondary cell (PSCell) changes and additions by user equipment (UE) lead to excessive signaling overhead, power consumption, and performance degradation, particularly in 5G systems, due to the need for multiple configurations during mobility and channel quality changes.
Innovation Solution
A method where a user equipment (UE) receives a single configuration from a master node for performing multiple conditional PSCell changes or additions, based on a subset of target secondary nodes, minimizing the need for repeated signaling by storing the configuration for subsequent procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate configurations are provided for each conditional PSCell procedure, then the UE can perform frequent PSCell changes and additions to maintain connection quality, but signaling overhead increases excessively
Solution Approach 1:
The patent merges multiple separate PSCell configurations into a single unified configuration message that contains configuration information for multiple target PSCells. The network entity transmits one configuration message including SCG configurations for multiple secondary nodes, allowing the UE to perform multiple conditional PSCell procedures without receiving separate configurations for each, thereby reducing signaling overhead while maintaining connection quality.
Solution Approach 2:
The single configuration message serves multiple functions by providing SCG configurations for multiple target PSCells simultaneously. This universal configuration structure enables the UE to handle various conditional PSCell procedures (changes and additions) using one configuration, making the configuration message multi-functional rather than requiring separate dedicated configurations for each procedure.
2Reliability
If multiple separate configurations are transmitted for each PSCell procedure, then the UE can adapt to channel quality changes, but power consumption increases due to frequent signaling processing
Solution Approach 1:
By combining multiple PSCell configurations into a single transmission, the UE processes one configuration message instead of multiple separate messages. This reduces the processing load and associated power consumption while still providing the necessary configurations for adapting to channel quality changes through the multiple included SCG configurations.
3Reliability
If frequent PSCell changes are performed to maintain optimal connection, then connection quality is maintained, but system performance degrades due to signaling overhead
Solution Approach 1:
The network entity performs preliminary action by pre-configuring the UE with multiple SCG configurations in advance through a single configuration message. This allows the UE to have ready-to-use configurations for multiple target PSCells, enabling faster execution of conditional PSCell procedures when needed, thereby maintaining connection quality without the performance degradation associated with frequent separate signaling exchanges.
Data Source
AI summary
The described techniques relate to improved methods, systems, devices, and apparatuses that support multi-secondary cell group configurations. Generally, the described techniques provide for a configuration that enables a user equipment (UE) to perform multiple conditional primary and secondary cell (PSCell) addition or change procedures. For instance, the UE may perform a series of conditional PSCell changes and/or conditional PSCell additions based on a single configuration provided by a network entity. In such cases, the single configuration may be based on a subset of secondary nodes (secondary nodes) that are identified by one or more target secondary nodes. In some aspects, the single configuration may include an indication that the configuration may be used for multiple PSCell changes or additions, and the UE may store the configuration based on the indication.