Relay Reselection and Link Release Messaging in Sidelink
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing relay selection and reselection in sidelink communications, particularly in scenarios where unicast links need to be released without triggering relay reselection procedures, leading to potential interruptions and inefficiencies.
Innovation Solution
The method involves performing relay selection and reselection procedures separately from releasing communications links between a relay UE and a remote UE, allowing for the release of unicast links without triggering relay reselection, by using specific messaging protocols and timing mechanisms to manage the process effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If relay reselection procedure is triggered when releasing unicast link, then link management is automated, but communication interruptions increase and efficiency decreases
Solution Approach 1:
The patent segments the relay management process into two independent procedures: relay reselection and unicast link release. By separating these previously coupled operations, the system can release unicast links without automatically triggering relay reselection, thereby reducing unnecessary interruptions while maintaining automated management where actually needed.
Solution Approach 2:
The patent introduces dynamic control mechanisms that allow the relay UE to selectively trigger relay reselection based on specific conditions rather than automatically upon every unicast link release. This dynamic approach enables the system to adapt to different scenarios, triggering reselection only when necessary to maintain communication efficiency.
2Reliability
If relay reselection is triggered during unicast link release, then relay selection is updated, but communication interruptions increase
Solution Approach 1:
The patent separates relay reselection and unicast link release into distinct procedures, allowing the system to maintain accurate relay selection information only when necessary while avoiding unnecessary interruptions during routine link releases.
Solution Approach 2:
The patent implements preliminary checks and conditions before triggering relay reselection, ensuring that reselection is only initiated when actually needed for maintaining reliable communication, thereby avoiding unnecessary interruptions.
3Device complexity
If unicast link release and relay reselection are combined, then procedure complexity is reduced, but communication efficiency decreases
Solution Approach 1:
The patent segments the combined procedure into separate relay reselection and unicast link release operations, reducing overall complexity by allowing independent optimization of each procedure and avoiding the forced coupling that previously reduced efficiency.
Solution Approach 2:
The patent changes the control parameters governing relay management, introducing new conditions and triggers that allow flexible control over when relay reselection occurs, thereby optimizing communication efficiency without excessive procedural complexity.
Data Source
AI summary
Certain aspects of the present disclosure provide techniques for performing relay reselection and releasing unicast links between relay UEs and remote UEs separately from each other. An example method generally includes taking one or more actions to trigger a relay reselection procedure separately from releasing a unicast link between the UE and a first relay UE; establishing a unicast link between the UE and a second relay UE; and releasing the unicast link between the UE and the first relay UE.