Sidelink Data Bearer Configuration for V2X Priority Control
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Solution Overview
Problem
There is a need for an effective method and apparatus to manage sidelink bearers in vehicle-to-everything (V2X) systems, particularly in scenarios involving RRC_CONNECTED, RRC_IDLE, RRC_INACTIVE, and Out-Of-Coverage states, to ensure efficient data transmission and prioritize transmissions based on priority thresholds.
Innovation Solution
A method and apparatus for a first sidelink terminal to obtain sidelink radio bearer configuration information, identify default sidelink radio bearer information, and transmit data to a base station or a second sidelink terminal based on this information, including priority thresholds for uplink and sidelink data transmission, and determine the order of transmission based on these priorities.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If sidelink radio bearer configuration information is obtained and default sidelink radio bearer information is identified for data transmission, then data transmission efficiency is improved, but device complexity increases due to multiple operational states and priority threshold management
Solution Approach 1:
The terminal pre-identifies default sidelink radio bearer information from the obtained configuration information before actual data transmission occurs. This preliminary identification of default bearers for different operational states (RRC_CONNECTED, RRC_IDLE, RRC_INACTIVE, Out-Of-Coverage) prepares the transmission path in advance, enabling efficient data transmission without real-time configuration delays.
Solution Approach 2:
The system manages different sidelink radio bearer configurations corresponding to different operational states and priority thresholds. By changing bearer parameters (such as default bearer identification, priority levels, and transmission resources) according to the current operational state and data priority, the system optimizes transmission efficiency while maintaining manageable complexity through structured parameter variation.
2Reliability
If priority thresholds are established for uplink and sidelink data transmission, then transmission prioritization is improved, but loss of time increases due to determination and comparison operations
Solution Approach 1:
Priority thresholds for uplink and sidelink data transmission are pre-established and configured in the terminal before actual transmission decisions are needed. The terminal has ready-accessible priority threshold values that enable immediate comparison with current data priority levels, eliminating the need for real-time priority calculation or complex decision algorithms during transmission moments.
Data Source
AI summary
A communication method of a first sidelink terminal in a wireless communication system is provided. The communication method includes obtaining sidelink radio bearer configuration information, identifying default sidelink radio bearer information in the sidelink radio bearer configuration information, and transmitting data to a base station or a second sidelink terminal based on the default sidelink radio bearer information.