Relay UE Link Quality Management via Resource Reselection
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Solution Overview
Problem
In wireless communication systems, particularly in 5G networks, there is a need for a method to determine link quality between relay user equipment (UE) and remote UE, and to perform resource reselection efficiently to ensure Quality of Service (QoS) requirements are met, especially in scenarios where the link quality between the relay UE and the remote UE does not satisfy the required QoS.
Innovation Solution
A method and apparatus for a relay UE to measure link quality between itself and a source UE, receive link quality information from a remote UE, and perform resource reselection based on the difference in link quality when it does not know the required QoS, or when the link quality between the relay UE and the remote UE exceeds a predetermined threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the relay UE performs resource reselection based on link quality comparison, then the link quality management efficiency is improved, but the decision-making complexity increases
Solution Approach 1:
The relay UE receives link quality information from the remote UE and uses this feedback to make resource reselection decisions. The feedback mechanism allows the relay UE to compare link qualities and select resources accordingly, improving management efficiency while keeping the decision logic structured and manageable.
Solution Approach 2:
The relay UE measures link quality to the source UE in advance and compares it with the received link quality information from the remote UE before making resource reselection. This preliminary measurement and comparison enables efficient resource management by preparing necessary information ahead of time.
2Reliability
If the relay UE measures and compares link qualities from both source UE and remote UE, then the QoS requirement satisfaction is improved, but the measurement and processing time increases
Solution Approach 1:
The remote UE provides feedback information about its link quality to the relay UE. This feedback mechanism enables the relay UE to assess the overall link quality without requiring direct measurement from the source UE to the remote UE, reducing measurement time while maintaining QoS assessment accuracy.
Solution Approach 2:
The relay UE acts as an intermediary that receives link quality information from the remote UE and combines it with its own measurement of the source UE link quality. This intermediary role allows efficient QoS assessment by leveraging information already available at the relay UE and from the remote UE, avoiding redundant measurements.
Data Source
AI summary
An embodiment is a method for operating a relay User Equipment (UE) in a wireless communication system, the method comprising steps for the relay UE to: measure the link quality between a source UE and the relay UE; and receive information related to the link quality between the relay UE and a remote UE from the remote UE, wherein, when the relay UE does not know the Quality of Service (QoS) required for a message, resource reselection is performed on the basis of the difference between the link quality between the source UE and the relay UE and the link quality between the relay UE and the remote UE being greater than a preset value.