Wireless Communication Apparatus Beamforming Interference Prediction
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Solution Overview
Problem
In wireless communication systems using high frequency bands, the processing load increases, leading to potential delays and complexity in device control. Collecting channel estimation values from all distributed antennas to each user terminal is undesirable as it exacerbates processing load issues, hindering communication capacity improvements.
Innovation Solution
A wireless communication apparatus and method that select one or more user terminals, predict the interference amount of stream groups transmitted from multiple antennas, collect reception power values when interference is low, select streams and antennas based on reception power, and perform beam forming to transmit selected streams, thereby reducing processing load while improving communication capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If channel estimation values are collected from all distributed antennas to each user terminal, then communication capacity is improved, but processing load increases
Solution Approach 1:
The patent extracts only the necessary channel estimation values for selected user terminals and antennas, rather than collecting all channel estimation values from all distributed antennas. The base station selects specific user terminals and antennas based on prediction values of interference amounts, and only collects channel estimation values for these selected entities, thereby reducing processing load while maintaining communication capacity improvement.
Solution Approach 2:
The patent segments the distributed antenna system into selected and unselected portions. The base station divides the set of all user terminals and all antennas into selected subsets based on prediction criteria, and only performs detailed channel estimation and stream allocation for these selected segments. This segmentation approach reduces the overall processing load while still achieving communication capacity improvement through the selected segments.
2Productivity
If multiple channel estimation values are collected and streams are controlled based on them, then communication capacity is improved, but device control complexity increases
Solution Approach 1:
The patent performs preliminary prediction of interference amounts for different stream group configurations before actually collecting channel estimation values and controlling streams. The base station predicts interference amounts for various antenna combinations and user terminal selections in advance, uses these prediction values to determine which channel estimation values to collect, and then controls stream allocation based on these pre-determined selections. This preliminary action simplifies subsequent device control operations.
Solution Approach 2:
The base station uses its own prediction capability to automatically determine which channel estimation values need to be collected and which streams should be allocated to which user terminals. The prediction unit evaluates interference amounts and makes self-determined selections about resource allocation without requiring complex external control mechanisms, thereby simplifying device control while maintaining communication capacity improvement.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach effectively improves communication capacity while maintaining low processing loads, without the need for extensive channel estimation value collection, thus simplifying device control and reducing potential delays.
Implementation Method 1
a transmission unit that transmits the plurality of selected streams by beam forming using the plurality of selected antennas
Data Source
AI summary
A wireless communication apparatus includes a terminal selection unit that selects one or more user terminals, a prediction unit that derives a prediction value of an interference amount of a stream group transmitted from a plurality of antennas for the selected one or more user terminals, a collection unit that, when the prediction value of the interference amount is less than a threshold value, collects reception power values of streams included in the stream group from the selected one or more user terminals, an antenna selection unit that selects the plurality of streams in descending order of reception power values and selecting the plurality of antennas associated with the plurality of selected streams, and a transmission unit that transmits the plurality of selected streams by beam forming using the plurality of selected antennas.