Link Adaptation via Channel Bundling for Interference Reduction
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Solution Overview
Problem
Current link adaptation schemes in wireless communication networks are suboptimal in multichannel systems, particularly when multiple access interference occurs, leading to network instability and inefficient data transmission.
Innovation Solution
The method involves channel bundling, where a transmitter occupies multiple channels to reduce potential interferers, enhancing the performance of multi-user detectors and maintaining a higher signal-to-interference and noise ratio (SINR), allowing for higher capacity and potentially keeping the physical mode unchanged or reducing transmission time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a transmitter uses a single channel for data transmission, then the device complexity is low and ease of operation is high, but multiple access interference from other users degrades signal quality and network stability
Solution Approach 1:
The patent transitions from single-channel to multi-channel transmission by occupying at least two channels simultaneously. This dimensional expansion in frequency domain allows the transmitter to reduce multiple access interference while maintaining manageable complexity through structured channel selection and bundling operations.
2Reliability
If the transmitter occupies multiple channels, then interference is reduced and signal quality is improved, but the device complexity and operational complexity increase
Solution Approach 1:
The patent performs preliminary channel quality measurements and interference assessments during idle times before actual data transmission. This advance preparation allows the system to select optimal channel combinations and PHY modes beforehand, simplifying real-time operation while maintaining high reliability through pre-validated configurations.
Solution Approach 2:
The system continuously monitors packet error rates and channel quality measurements, using this feedback to dynamically adjust PHY mode selections and channel bundling strategies. This closed-loop control maintains ease of operation through automated adaptation while ensuring network stability through responsive adjustments to changing conditions.
3Productivity
If link adaptation adjusts PHY mode based on single-channel conditions, then the adaptation is simple and fast, but performance degrades in multichannel systems with multiple access interference
Solution Approach 1:
The patent merges multiple channel quality assessments and interference measurements into a unified link adaptation decision process. By combining information from at least two channels, the system achieves higher data transmission rates through coordinated channel bundling while managing algorithmic complexity through integrated evaluation metrics that consider both channels simultaneously.
Data Source
AI summary
A method of reducing interference in a communication system supporting multiple radio channel communication scheme, where a communication link can be established between a transmitter and a receiver. The transmitter first determines interference level at the transmitter, and then based on the determined interference level, performs link adaptation. The link adaptation comprises applying channel bundling for adapting the communication link so as to transmit simultaneously on at least two radio channels from the transmitter to the receiver.