Receiver Device Threshold-Based Channel Feedback
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Solution Overview
Problem
Current wireless communication systems face high signaling overhead due to frequent reporting of channel quality information by Mobile Stations (MS) in multicast and broadcast networks, which affects resource utilization and efficiency.
Innovation Solution
A method and apparatus for a receiver device that measures channel quality parameters and transmits state information only when the measured value reaches a predetermined threshold, allowing for adaptive adjustment of service layers and reduced signaling overhead by selectively reporting changes in channel conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If frequent channel quality reporting is implemented to ensure accurate feedback, then the accuracy of channel feedback is improved, but the signaling overhead increases
Solution Approach 1:
The patent changes the reporting parameter from continuous frequent reporting to threshold-based event-triggered reporting. The MS compares measured channel quality against predefined thresholds and only reports when thresholds are crossed, transforming the reporting mechanism from time-driven to event-driven, thereby reducing signaling overhead while maintaining feedback accuracy.
Solution Approach 2:
The patent implements dynamic reporting behavior where the MS adapts its reporting frequency based on channel conditions. When channel quality changes significantly (crossing thresholds), reporting is triggered; when conditions are stable, reporting is suppressed. This dynamic approach optimizes the balance between feedback accuracy and signaling overhead.
2Productivity
If all Mobile Stations report channel quality information frequently, then the resource allocation efficiency is improved, but the network signaling load increases
Solution Approach 1:
The patent extracts only the necessary reporting instances from the set of all possible reports. By removing redundant reports (those that do not cross thresholds), the system maintains resource allocation efficiency while significantly reducing the total quantity of signaling messages that need to be processed by the network.
Solution Approach 2:
The patent applies partial action by having MS report only when necessary (threshold crossing) rather than continuously. This selective reporting provides sufficient information for resource allocation decisions without the excessive signaling load of continuous reporting from all MS.
Data Source
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AI summary
A method for reporting state information is provided. The receiver device receives a service, which is encoded in at least two layers over a communication channel, through a subset of said at least two layers; it measures a channel quality parameter; and in response to the channel quality parameter reaching a predetermined threshold value, it receives the service through a modified subset of the at least two layers as a function of the measured channel quality parameter and transmitting state information of the receiver device. Thus, the signal overhead is reduced.