V2X Terminal Timer for RRC Re-establishment Continuity
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Solution Overview
Problem
Current wireless communication systems face challenges in maintaining stable Vehicle-to-X (V2X) transmission during Radio Resource Control (RRC) connection re-establishment procedures, which are time-consuming and disrupt communication, especially in scenarios like radio link failures or handovers.
Innovation Solution
A method where a timer is initiated upon detecting a V2X transmission failure, allowing V2X transmission to continue on pre-set resources during RRC re-establishment or idle mode, enabling rapid recovery and maintaining communication by configuring the timer through dedicated signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal performs RRC connection re-establishment procedure to recover radio connection, then connection reliability is improved, but transmission latency increases and V2X communication continuity deteriorates
Solution Approach 1:
The terminal performs V2X transmission in advance using previously configured resources before the RRC connection is fully re-established. By starting V2X transmission using stored configuration information while the RRC re-establishment procedure is ongoing, the system prepares the transmission path beforehand, reducing the effective interruption time and maintaining service continuity.
Solution Approach 2:
The terminal maintains continuous V2X transmission during the RRC re-establishment procedure by using previously configured resources. Instead of stopping transmission entirely during connection recovery, the system keeps the useful action (V2X communication) continuous by allowing parallel operation with the re-establishment procedure, thus reducing overall latency while maintaining reliability.
2Stability of the object's composition
If the terminal stops V2X transmission during RRC connection re-establishment to ensure proper connection recovery, then connection stability is improved, but V2X communication continuity deteriorates
Solution Approach 1:
The system segments the V2X transmission function from the RRC connection management function. By allowing V2X transmission to operate independently using previously configured resources while the RRC connection is being re-established, the patent separates these two functions so that connection recovery procedures do not necessarily interrupt critical V2X communications, thereby maintaining both stability and reliability.
Solution Approach 2:
Previously configured V2X transmission resources act as an intermediary that enables continuous V2X transmission during RRC re-establishment. These pre-configured resources serve as a bridge that allows V2X communication to continue without direct dependence on the current RRC connection state, maintaining transmission reliability while the connection stabilizes.
3Reliability
If the terminal uses pre-configured transmission resources during RRC re-establishment, then V2X transmission continuity is improved, but resource allocation complexity increases
Solution Approach 1:
The terminal autonomously manages V2X transmission using previously configured resources and a simple timer mechanism during RRC re-establishment without requiring complex network coordination. The terminal itself handles the timing and resource selection, reducing the need for complex network-side resource allocation while maintaining transmission continuity.
Solution Approach 2:
The system changes the operational parameters of V2X transmission by using previously configured resource settings and a timer-based approach during re-establishment. This parameter change allows the terminal to switch to a simplified resource usage mode that maintains continuity while reducing allocation complexity, as the resources are already determined and only timing needs to be managed.
Data Source
AI summary
The present invention provides a vehicle-to-X (V2X) operation method performed by a terminal in a wireless communication system, including: when a V2X transmission failure is detected, starting a timer as soon as a radio resource control (RRC) connection re-establishment procedure is initiated; and performing a V2X transmission on the basis of the timer, wherein, when the timer is in operation and the RRC connection re-establishment procedure is performed, the terminal performs the V2X transmission on a transmission resource which has been set before the V2X transmission failure is detected.