Feedback Signaling Management via Quality-Based Resource Selection
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Solution Overview
Problem
Communication networks face challenges in managing feedback signaling, particularly in wireless networks, where excessive feedback can lead to resource strain and interference, and existing methods lack efficient mechanisms to adapt transmission parameters based on reception quality without unnecessary power consumption or resource usage.
Innovation Solution
An apparatus and method that determine the quality level of received information to select appropriate feedback resources, allowing for controlled transmission of feedback using a contention-based mechanism, suppressing unnecessary feedback and adapting transmission parameters based on received feedback, thereby optimizing resource usage and reducing interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If feedback is transmitted for every received information block, then the transmitter can adapt transmission parameters accurately, but network resources are strained and interference increases
Solution Approach 1:
The patent extracts only the essential feedback information (quality level indication) and transmits it selectively based on predefined thresholds, rather than transmitting all possible feedback data. This reduces feedback signaling quantity while maintaining sufficient information for transmission parameter adaptation.
Solution Approach 2:
The patent implements partial feedback transmission by comparing quality level against thresholds and transmitting feedback only when necessary (when quality falls below threshold). This partial action approach reduces overall feedback quantity while maintaining reliability where needed.
2Reliability
If transmit power is increased to improve reception quality, then bit error rate decreases, but interference to other stations increases and battery drains faster
Solution Approach 1:
The patent implements a feedback mechanism where receivers report quality levels to transmitters. Based on this feedback, transmitters can adjust their transmit power dynamically - increasing power only when quality deteriorates below thresholds and reducing power when quality is sufficient, thereby minimizing interference while maintaining reception quality.
Solution Approach 2:
The patent makes transmit power dynamic by adjusting it based on feedback about reception quality. Instead of using fixed high power, the system adapts power levels in real-time based on actual channel conditions, reducing interference when high power is not needed.
3Ease of operation
If feedback resources are allocated for all quality levels, then all receivers can provide feedback simultaneously, but resource allocation complexity increases
Solution Approach 1:
The patent segments feedback resources by associating different feedback resources with different quality level ranges. Receivers select feedback resources based on their measured quality level, which simplifies resource allocation compared to providing dedicated resources for every possible quality level.
Solution Approach 2:
The patent makes feedback resources universal by having multiple receivers share the same feedback resource when they experience similar quality levels. This multi-functionality approach reduces the total number of feedback resources needed compared to dedicating separate resources to each receiver or each quality level.
Data Source
AI summary
According to an example aspect of the present invention, there is provided an apparatus including a memory configured to store received information, and at least one processing core configured to determine a quality level at which the received information was received, to select, based at least partly on the quality level, a feedback resource, and to decide on causing transmission of feedback on the selected feedback resource.