Relay UE Load-Based Selection for Reliable Sidelink Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In wireless communication systems, autonomous resource selection by UEs can lead to sending collisions, reducing reliability in sidelink communication, especially when multiple UEs select the same sending resource.
Innovation Solution
A method for selecting a relay UE based on load information of candidate UEs, including receiving and evaluating load information such as load rate, load level, and channel quality to determine a suitable relay UE for communication with a base station or satellite.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE autonomously selects relay UE without considering load information, then relay selection is simple and fast, but communication reliability deteriorates due to high load on relay UE
Solution Approach 1:
The patent applies preliminary action by having relay UEs broadcast their load information in advance before being selected. This allows the first UE to make an informed selection based on current load conditions, preventing selection of already-overloaded relays and improving communication reliability without adding complex real-time evaluation mechanisms.
Solution Approach 2:
The patent implements feedback by using load information broadcast by relay UEs as a selection criterion. The first UE receives feedback about the load status of candidate relay UEs and uses this information to select the most appropriate relay, creating a feedback-driven selection mechanism that balances reliability and complexity.
2Productivity
If relay UE has high load, then more UEs can be served, but communication delay increases and quality degrades
Solution Approach 1:
The patent applies dynamics by making the relay selection process adaptive to changing load conditions. Relay UEs continuously broadcast their load information, and the first UE dynamically selects relays based on current conditions rather than using a static selection criterion, allowing the system to respond to varying traffic loads and minimize delays.
Solution Approach 2:
The patent uses parameter changes by incorporating load information as a dynamic parameter in the relay selection process. Instead of selecting relays based solely on fixed criteria like signal strength, the system changes the selection parameter to include real-time load status, enabling optimization of both productivity and communication delay.
3Measurement precision
If load information is broadcast by all candidate UEs, then relay selection accuracy improves, but network overhead increases
Solution Approach 1:
The patent extracts only the necessary information (load status) that relay UEs need to broadcast for selection purposes. Instead of transmitting complete UE status or unnecessary data, the system extracts and transmits only the relevant load information parameter, reducing network overhead while maintaining selection accuracy.
Data Source
AI summary
A method for selecting a relay UE, a method for processing information are provided. The method for selecting a relay UE includes selecting, according to load information of candidate UEs, a relay UE from the candidate UEs.