Relay UE Selection by Base Station Alignment in Multi-Path Links
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Solution Overview
Problem
Existing 3GPP LTE systems face challenges in efficiently managing multi-path communication scenarios where a remote UE selects a relay UE without ensuring that the base stations serving the remote UE and the relay UE are the same, which affects communication efficiency and reliability.
Innovation Solution
A method for a remote UE to select a relay UE by determining if the base stations serving the remote UE and the relay UE are the same based on received information, ensuring consistent management and improved communication pathways.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the remote UE selects a relay UE without verifying base station alignment, then the relay selection process is simpler and faster, but communication reliability and efficiency deteriorate due to inconsistent base station management
Solution Approach 1:
The patent applies preliminary action by having the remote UE check base station alignment information (such as gNB ID or cell ID) from the relay UE before completing the relay selection process. This advance verification ensures that only relay UEs serving the same base station are selected, preventing future communication issues while maintaining an efficient selection process.
2Reliability
If the remote UE verifies base station alignment information, then communication reliability is improved, but the relay selection process becomes more complex and time-consuming
Solution Approach 1:
The patent applies local quality by focusing the verification process on specific critical parameters (gNB ID or cell ID) rather than进行全面 checks. The remote UE extracts and compares only the necessary base station identification information from the relay UE's broadcast data, achieving reliable base station alignment verification without excessive complexity.
3Adaptability or versatility
If base stations serving remote UE and relay UE are not aligned, then multi-path communication flexibility is improved, but communication efficiency deteriorates due to inconsistent management
Solution Approach 1:
The patent applies feedback by using the base station alignment information (gNB ID or cell ID) broadcast by the relay UE as feedback for the remote UE's selection decision. The remote UE uses this feedback to determine whether to select the relay UE, ensuring that selection decisions are based on actual base station alignment status rather than assumptions.
Data Source
AI summary
One disclosure of the present specification provides a method by which remote UE performs communication. The method comprises the steps of: receiving a discovery message from relay UE, the discovery message comprising information about a first base station serving the relay UE; determining, on the basis of the information about the first base station, whether the first base station and a second base station serving remote UE are the same; and selecting the relay UE for PC5 (device-to-device communication) connection, on the basis that the first base station and the second base station are the same.