Sidelink Resource Selection via Frequency Continuity and MPR
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently selecting and transmitting sidelink signals across multiple carriers and bandwidth parts, particularly in ensuring continuity and minimizing power consumption while managing interference and coverage limitations.
Innovation Solution
A method for user equipment (UE) to select resources based on continuity of frequency resources and maximum power reduction (MPR) in sequence, prioritizing contiguous frequency resources and adjusting power offset based on measured signal strength and channel busy ratio (CBR), to optimize sidelink signal transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If non-contiguous frequency resources are selected to increase resource selection flexibility, then resource selection adaptability improves, but power consumption increases due to higher maximum power reduction (MPR)
Solution Approach 1:
The patent changes the selection criteria parameters by introducing a hierarchical evaluation process: first evaluating frequency resource continuity, then evaluating MPR values. This parameter-based filtering allows the system to adapt resource selection to current channel conditions while avoiding configurations that would cause excessive power reduction, thus resolving the contradiction between flexibility and power consumption.
Solution Approach 2:
The patent implements dynamic resource selection by continuously monitoring channel conditions and adjusting the selection criteria based on current MPR measurements and continuity assessments. The system dynamically adapts between selecting contiguous resources (when available and beneficial) and non-contiguous resources (when necessary for adaptability), optimizing the balance between flexibility and power consumption in real-time.
2Use of energy by moving object
If contiguous frequency resources are prioritized to reduce power consumption, then power efficiency improves, but resource selection adaptability decreases
Solution Approach 1:
The patent segments the resource selection process into distinct evaluation stages: first assessing frequency resource continuity, then evaluating MPR values for candidate resources. This segmentation allows the system to prioritize power efficiency through contiguous resource selection while maintaining adaptability by considering alternative non-contiguous resources when channel conditions warrant it, thus resolving the contradiction between power efficiency and adaptability.
3Device complexity
If resources are selected without considering MPR to simplify the selection process, then selection complexity reduces, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by pre-establishing evaluation criteria and thresholds for frequency resource continuity and MPR values before the actual resource selection occurs. The system pre-identifies contiguous frequency resources and pre-evaluates their MPR characteristics, allowing for simplified real-time selection decisions while ensuring power consumption is optimized through the pre-computed criteria.
4Device complexity
If MPR is not considered in resource selection to reduce computational overhead, then processing complexity reduces, but interference increases
Solution Approach 1:
The patent implements feedback mechanisms by continuously monitoring MPR values and channel conditions, then using this feedback to adjust resource selection decisions. The system measures actual power reduction requirements and interference levels, feeds this information back into the selection process, and adjusts subsequent resource choices to minimize interference while maintaining computational efficiency through the established evaluation framework.
Data Source
AI summary
Disclosed herein is a method of transmitting a sidelink signal by a user equipment (UE) in a wireless communication system including selecting a plurality of resources from two or more frequency resources, and transmitting a sidelink signal based on the plurality of selected resources, wherein the UE selects the plurality of resources based on i) continuity of frequency resources ii) maximum power reduction (MPR) in sequence.