Interference Codeword Matching via SINR Thresholds
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Solution Overview
Problem
Current methods for matching interference channel codewords in inter-cell multi-antenna coordinated systems face challenges in accuracy and stability, leading to distorted results and unstable gain, as they do not effectively measure the correlation between codewords and channels, and lack adaptive feedback mechanisms.
Innovation Solution
A method that involves a user equipment obtaining SINR and SNR values, comparing them with thresholds to generate COMP policy information, and using SVD decomposition to determine the best or worst codeword indices, which are then fed back to the base station, allowing for adaptive codeword selection and cooperation policy adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the current method for matching interference channel codeword is used, then the codeword selection process is simple, but the measurement precision of codeword-channel correlation is insufficient leading to distorted results
Solution Approach 1:
The patent transforms the codeword matching process from direct channel comparison to SINR-based parameter comparison. By changing the measurement parameter from raw channel correlation to SINR difference values, the system achieves more precise measurement of codeword-channel correlation while maintaining manageable computational complexity through threshold-based decision rules.
Solution Approach 2:
The patent introduces SINR as an intermediary parameter between the channel state and codeword selection. Instead of directly measuring codeword-channel correlation, the system uses SINR values as a mediator to indirectly assess the correlation, thereby improving measurement precision while avoiding the complexity of direct correlation calculation.
2Stability of the object's composition
If adaptive feedback mechanism is not implemented, then the system operation is simple, but the stability of gain is poor
Solution Approach 1:
The patent implements a feedback mechanism where the user equipment compares SINR values with threshold values and feeds back COMP policy information to the base station. This feedback loop enables adaptive adjustment of codeword selection and transmission parameters, stabilizing the system gain by continuously adapting to changing channel conditions while maintaining relatively simple operational complexity through threshold-based decision rules.
3Reliability
If the current codeword matching method is used, then the processing speed is fast, but the reliability of interference channel management is insufficient
Solution Approach 1:
The patent performs preliminary calculation of SINR values and threshold comparisons before final codeword selection. By pre-calculating SINR differences and comparing them against thresholds, the system ensures reliable codeword-channel matching while maintaining fast processing speed through efficient mathematical operations and early termination of the selection process when thresholds are met.
Data Source
AI summary
The embodiment of the present document provides a method for matching an interference channel codeword in an inter-cell multi-antenna coordinated system, including: a user equipment obtaining a signal to interference plus noise ratio (SINR), or obtaining a SINR and a signal to noise ratio (SNR), and comparing the SINR, or the SINR and the SNR, with a preset threshold, generating coordinated multi-point transmission/reception (COMP) policy information according to a comparison result, and transmitting the COMP policy information to the base station. The present document further provides a user equipment.