Sidelink Relay Reselection Using Path Measurements and QoS
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Solution Overview
Problem
Existing communication systems face challenges in efficiently managing relay selection and reselection, particularly in complex wireless environments with multiple access technologies and varying network conditions, leading to suboptimal performance and user experience.
Innovation Solution
Implementing methods and apparatuses for relay selection and reselection that utilize advanced algorithms and protocols to optimize communication paths and adapt to dynamic network conditions, ensuring seamless connectivity and improved performance across diverse wireless networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If relay selection and reselection procedures are implemented in complex wireless environments with multiple access technologies, then communication reliability is improved, but system complexity increases
Solution Approach 1:
The patent segments the relay selection process into distinct phases: measurement phase where reference signals are transmitted and measured, evaluation phase where path qualities are assessed, and selection phase where the optimal relay is chosen. This segmentation allows each phase to be optimized independently, improving reliability without overwhelming system complexity.
Solution Approach 2:
The patent implements preliminary measurements and evaluations before final relay selection. Reference signals are transmitted and measured in advance, path qualities are evaluated beforehand, and multiple candidate relays are assessed prior to making the selection decision. This preliminary action ensures reliable selection while organizing complexity into manageable preparatory steps.
2Productivity
If dynamic relay reselection is performed to adapt to varying network conditions, then communication efficiency is improved, but signaling overhead increases
Solution Approach 1:
The patent implements feedback mechanisms where measurement results and path quality evaluations are reported back to the selecting entity. This feedback enables dynamic relay reselection based on actual network conditions, improving communication efficiency while managing signaling overhead through structured feedback messages that contain only essential information.
Solution Approach 2:
The patent changes parameters such as measurement thresholds, evaluation criteria, and selection timing based on network conditions. By dynamically adjusting these parameters, the system optimizes communication efficiency while controlling signaling overhead - for example, increasing reselection frequency only when network conditions warrant it.
3Measurement precision
If multiple measurement parameters are used for relay selection, then selection accuracy is improved, but measurement complexity increases
Solution Approach 1:
The patent applies different measurement parameters and evaluation criteria to different local conditions and candidate relays. Each relay is evaluated based on its specific characteristics and the local network environment, rather than applying a uniform complex measurement set to all candidates. This local quality approach improves selection accuracy while managing measurement complexity.
Solution Approach 2:
The patent uses a tiered measurement approach where essential measurements are performed on all candidate relays, and additional detailed measurements are performed only on promising candidates that pass initial screening. This partial action ensures accurate selection of the best relay while avoiding the excessive complexity of measuring all parameters for all candidates.
Data Source
AI summary
Procedures, methods, architectures, apparatuses, systems, devices, and computer program products directed to selection and/or reselection of WTRUs and paths are provided. Among such methods is a method that may be implemented in a first WTRU and may include determining first measurements based on first sidelink transmissions received from a second WTRU; receiving, from the second WTRU, second measurements associated with a path between the first WTRU and a third WTRU, wherein second measurements are based, at least in part, on sidelink transmissions exchanged between the third WTRU and the second WTRU or between the third WTRU and a fourth WTRU; determining a measurement of the path based on any of the first and second measurements; determining transmission parameters for transmitting discovery messages during a communication period based on any of the measurement of the path and quality of service criteria; and transmitting the discovery messages according to the transmission parameters.