Multi-Path Bearer Switching for Reliable V2X Signal Transmission
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Solution Overview
Problem
Existing wireless communication systems face challenges in accurately and efficiently performing wireless signal transmission/reception procedures, particularly in V2X communication scenarios such as vehicle platooning, advanced driving, and remote driving, which require enhanced mobile broadband communication with considerations for reliability and latency.
Innovation Solution
A method for wireless signal transmission/reception involving a user equipment (UE) that configures a multi-path bearer with both direct and indirect network paths, selecting a primary path based on data volume thresholds and path type information, and switches paths using MAC control elements or DCI, allowing efficient data transmission through a primary lower entity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single direct path is used for wireless communication, then the transmission path is simple, but reliability and latency performance are insufficient in V2X scenarios
Solution Approach 1:
The communication path is segmented into multiple independent paths (direct path and indirect path via relay UE), each capable of carrying data separately. This segmentation allows the system to switch between paths or use both simultaneously, improving reliability without requiring a completely complex monolithic system.
Solution Approach 2:
The system dynamically selects between direct and indirect paths based on real-time conditions (data volume threshold, path availability). The path selection is not fixed but adapts to current network conditions, allowing the system to maintain simplicity when possible while providing complexity only when needed for improved reliability.
2Reliability
If multiple paths are configured for enhanced reliability, then communication reliability improves, but path selection and switching complexity increases
Solution Approach 1:
The system performs self-service path selection by automatically evaluating conditions (data volume threshold, path availability) and choosing the optimal path without external intervention. The UE autonomously determines whether to use direct or indirect paths based on pre-configured criteria, eliminating the need for complex manual path selection operations.
Solution Approach 2:
The system uses parameter changes (data volume threshold comparisons, path availability status) to trigger path selection decisions. By monitoring changes in these parameters, the system can automatically switch paths when conditions change, making the operation simple while maintaining high reliability.
3Productivity
If data transmission uses threshold-based path selection, then efficiency is improved, but transmission accuracy may be affected by threshold timing
Solution Approach 1:
The system performs preliminary measurement of data volume before path selection is finalized. By measuring and comparing data volume against the threshold in advance, the system can prepare the appropriate path configuration beforehand, ensuring both efficient transmission and accurate measurement-based decisions.
Solution Approach 2:
The system uses feedback from data volume measurements to adjust path selection decisions. When the measured data volume exceeds the threshold, the system switches to the indirect path; when it falls below, it switches to the direct path. This feedback mechanism ensures transmission efficiency while maintaining measurement accuracy through continuous monitoring.
Data Source
AI summary
In the present disclosure, a method of transmitting a signal by a user equipment (UE) in a wireless communication system, may comprise receiving a message including configuration a multi-path (MP) bearer configured with an upper entity and a plurality of lower entities including a first lower entity related to a direct path to a network and a second lower entity related to an indirect path to the network; and transmitting a data unit based on the MP bearer configured through the configuration information, wherein the plurality of lower entities may be associated with the upper entity.