UE Radio Bearer Path Selection for Fast Channel Adaptation
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Solution Overview
Problem
Existing technologies lack a method for a user equipment (UE) to quickly adapt transmission paths for a radio bearer to dynamically changing channel conditions without network-side control signaling, especially with the introduction of multiple leg data duplication functions.
Innovation Solution
A transmission path selection method for UE, involving obtaining configuration information for selecting from multiple paths based on performance indicators and trigger events, allowing the UE to autonomously adjust transmission paths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If network side transmits control signaling to change transmission path, then transmission path can be changed, but transmission delay increases and response speed decreases
Solution Approach 1:
The terminal performs autonomous transmission path selection based on configuration information and channel conditions without requiring network-side control signaling for each path change. The terminal independently monitors channel quality indicators (CQI) and selects optimal paths, eliminating signaling delay and enabling rapid adaptation to channel variations
Solution Approach 2:
The network side pre-configures multiple transmission paths and provides configuration information to the terminal in advance. This preliminary setup enables the terminal to immediately switch between pre-defined paths based on channel conditions without waiting for network control signaling, thus reducing transmission delay
2Adaptability or versatility
If terminal autonomously selects transmission path, then adaptation speed to channel conditions improves, but system complexity increases
Solution Approach 1:
The terminal monitors changes in channel quality parameters (CQI) and adjusts transmission path selection based on these parameter variations. Configuration information includes thresholds and criteria that guide the terminal's decision-making process, enabling adaptive behavior through parameter comparison rather than complex algorithms
Solution Approach 2:
The transmission path selection process is divided into independent evaluation of multiple paths based on their respective channel conditions. The terminal separately assesses each configured path's quality and selects the best one, breaking down the complex selection problem into simpler independent evaluations
3Reliability
If multiple transmission paths are configured, then transmission reliability improves, but resource consumption increases
Solution Approach 1:
Instead of continuously utilizing all configured transmission paths, the terminal selectively activates only the necessary number of paths based on current channel conditions and quality requirements. This partial action approach maintains reliability when needed while avoiding resource wastage during normal operation
Solution Approach 2:
The terminal dynamically adjusts the number and selection of active transmission paths based on real-time channel conditions. When channel quality deteriorates or reliability requirements increase, more paths are activated; when conditions are good, fewer paths are used, optimizing resource consumption while maintaining required reliability
Data Source
AI summary
A transmission path selection method, an information configuration method, a terminal, and a network device are provided, and related to the field of communications technologies. The transmission path selection method is applied to a terminal and includes: obtaining configuration information for selecting a transmission path by the terminal, where a radio bearer of the terminal corresponds to at least two transmission paths; and selecting a transmission path from the at least two transmission paths based on the configuration information.