Mobile Terminal Feedback Compression for Interference Management
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Solution Overview
Problem
In cellular wireless communication systems, the interference between cells using the same radio resources becomes a limiting factor when multiple base stations collaborate, leading to increased computational complexity and challenges in distributed channel data collection and coherent signal transmission, particularly due to the need for efficient utilization of feedback information like CSI.
Innovation Solution
A method where mobile terminals process and compress feedback information to reduce signaling traffic, allowing for interference management through joint transmission, and enabling multiple base stations to perform pre-coding calculations based on this reduced feedback, thereby reducing interference and improving data processing efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple base stations collaborate for interference management, then interference suppression capability is improved, but computational complexity increases
Solution Approach 1:
The patent segments the feedback information processing task by having each mobile terminal independently process its own channel state information and generate compressed feedback reports. This distributes the computational burden across multiple terminals rather than requiring centralized processing of all channel data, thereby reducing overall computational complexity while maintaining interference suppression capability through coordinated base station processing of the segmented feedback reports
Solution Approach 2:
The patent extracts only the essential feedback information needed for interference management by having mobile terminals process and compress their channel state information before reporting. This extraction of critical data elements reduces the amount of information that base stations need to process collaboratively, thereby reducing computational complexity while preserving the core interference suppression functionality
2Measurement precision
If full CSI feedback is collected from all mobile terminals, then channel state information accuracy is improved, but signaling traffic increases
Solution Approach 1:
The patent applies extraction by having mobile terminals process their raw channel state information and report only the essential compressed feedback data to base stations. This selective reporting of critical information maintains the accuracy needed for interference management while significantly reducing the signaling traffic required to transmit complete CSI data from all terminals
Solution Approach 2:
The patent changes the parameter of feedback information from detailed raw CSI data to compressed feedback reports with reduced data dimensions. This parameter transformation maintains the essential channel state information needed for accurate interference management while reducing the signaling traffic volume by changing the representation format of the feedback data
3Adaptability or versatility
If distributed mobile terminals provide feedback to multiple base stations, then interference management coverage is improved, but feedback information processing complexity increases
Solution Approach 1:
The patent segments the feedback processing task by assigning different compressed feedback reports from different mobile terminals to different base stations for processing. This segmentation allows each base station to handle a manageable subset of feedback information while collectively covering the entire interference management area, thereby improving coverage without overwhelming any single base station with excessive processing complexity
Data Source
AI summary
A method and a device for data processing in a communication network are provided, wherein a mobile terminal receives several input signals from at least one base station; and wherein the mobile terminal processes said several input signals into a feedback information that is conveyed to at least one base station.