Terminal Apparatus RRC Message Timing Adjustment
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Solution Overview
Problem
Current LTE and NR technologies face challenges in efficiently controlling mobility during handover processes, particularly in minimizing user data interruption and improving handover robustness, with a lack of detailed operations for terminal apparatus mobility control.
Innovation Solution
The implementation of a terminal apparatus and base station apparatus communication system that processes RRC messages to adjust timing parameters, allowing for efficient mobility control by including specific information in RRC messages to manage timers and optimize handover procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional handover procedures are used in LTE and NR, then mobility control is implemented, but user data interruption occurs and handover robustness is insufficient
Solution Approach 1:
The patent applies preliminary action by having the terminal apparatus apply the timer value to the timer before determining whether to transmit the handover confirm message. This timing adjustment ensures that the timer is properly configured in advance, allowing the handover process to proceed more smoothly and reducing interruptions in user data transmission during mobility control.
2Reliability
If detailed operations for terminal mobility control are added, then handover robustness improves, but device complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the timing of when the timer value is applied, rather than adding complex operational procedures. The processing unit adjusts the timing parameter in the RRC message to change when the timer starts or stops, improving mobility control efficiency through simple parameter adjustment rather than complex operational changes.
Data Source
AI summary
A terminal apparatus for communicating with a base station apparatus includes a receiver configured to receive an RRC message from the base station apparatus, and a processing unit configured to process the RRC message. A first value is a value included in the RRC message and applied to a first timer, and the processing unit changes timing to apply the first value to the first timer, based on whether the RRC message includes first information.