Communication Apparatus for CPC Release Control During Cell Changes
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Solution Overview
Problem
The challenge in mobile communication systems is the improper release of CPC configurations due to the requirement for communication apparatuses to retain them until receiving explicit instructions from the network, hindering continuous cell changes, especially in high-speed scenarios.
Innovation Solution
A communication apparatus and base station system that includes a receiver to receive a radio resource control (RRC) message with a conditional PS cell change (CPC) configuration and determination information, allowing the controller to decide when to release the CPC configuration based on specific criteria such as indicators, count information, timer information, or event information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the communication apparatus retains the CPC configuration until receiving explicit release instructions from the network, then the configuration reliability is improved, but the ability to perform continuous cell changes deteriorates
Solution Approach 1:
The network pre-configures release conditions and criteria in the CPC configuration message before the cell change occurs. The communication apparatus uses these pre-set conditions to autonomously determine when to release the configuration, eliminating the need for post-change release instructions and enabling continuous cell changes while maintaining reliability through predetermined rules
2Productivity
If the communication apparatus autonomously releases the CPC configuration after successful PS cell change, then the continuous cell change capability is improved, but the configuration control precision deteriorates
Solution Approach 1:
The network provides feedback mechanisms by configuring release conditions that are monitored by the communication apparatus. The apparatus continuously evaluates whether pre-configured release conditions are met (such as successful cell change confirmation, timer expiration, or event triggers), ensuring precise control over when the configuration is released while enabling autonomous operation for continuous cell changes
3Manufacturing precision
If the CPC configuration is released explicitly by network instruction, then the configuration management precision is improved, but the network intervention requirement increases
Solution Approach 1:
The communication apparatus is empowered to autonomously manage the release of CPC configurations by evaluating pre-configured release conditions locally. This self-service mechanism eliminates the need for continuous network intervention and explicit release instructions, reducing signaling overhead and network complexity while maintaining precise configuration management through locally-executable release criteria
Data Source
AI summary
A communication apparatus comprises a receiver configured to receive a radio resource control (RRC) message including a configuration to add or change a primary secondary cell (PS cell) that is a primary cell of the secondary cell group (SCG) when an execution condition is fulfilled, and a controller configured to determine whether to release the configuration. The controller is configured to determine whether to release the configuration based on whether or not there is information for the communication apparatus to determine whether to release the configuration, the information being associated with the configuration.