Spatial Multiplexing Wireless Transmission Antenna Selection
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Solution Overview
Problem
Conventional spatial multiplexing wireless transmission systems face challenges in reducing signal processing and power consumption while maintaining superior transmission characteristics, especially when communicating with multiple terminal stations, due to interference issues and difficulties in selecting the appropriate antennas for reception.
Innovation Solution
A spatial multiplexing wireless transmission system where a base station generates and transmits antenna information to terminal stations, allowing them to selectively activate only necessary antennas for receiving, using transmission/reception switching and reception processing portions, and performing beamforming to suppress interference, while also requesting propagation environment estimation signals to optimize antenna usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the base station selects antennas for terminal stations to reduce signal processing and power consumption, then power consumption and signal processing amount are reduced, but transmission quality deteriorates due to interference from unselected antennas
Solution Approach 1:
The patent extracts and processes only the necessary antenna signals at the terminal station. By receiving antenna information from the base station, the terminal station identifies and processes only the subset of antenna signals that are relevant, discarding or ignoring signals from unselected antennas. This extraction approach reduces power consumption and signal processing requirements while maintaining transmission quality by focusing computational resources only on the necessary signals.
Solution Approach 2:
The base station performs preliminary action by determining in advance which antennas will be used for transmission to each terminal station and communicating this antenna information to the terminal stations before the actual data transmission. This preliminary identification of active antennas allows terminal stations to pre-configure their signal processing, activating only the necessary reception circuits and processing paths, thereby reducing power consumption and processing load while ensuring transmission quality is maintained through proper beamforming control.
2Reliability
If the base station performs beamforming to prevent interference to other terminal stations, then transmission quality is improved, but the complexity of antenna selection and control increases
Solution Approach 1:
The patent introduces antenna information as an intermediary communication mechanism between the base station and terminal stations. The base station determines the optimal antenna configuration for beamforming and communicates this selection through antenna information to terminal stations. This intermediary approach simplifies the overall system complexity by providing a clear, standardized interface for antenna selection, allowing terminal stations to automatically configure their reception without complex decision-making algorithms, thus maintaining transmission quality while reducing control complexity.
3Reliability
If all antennas are used for reception in terminal stations, then transmission quality is maintained, but signal processing amount and power consumption increase significantly
Solution Approach 1:
The patent applies extraction by having terminal stations receive antenna information from the base station and process only the specific subset of antenna signals that are designated as active. Instead of processing all received antenna signals, the terminal station extracts and processes only the relevant ones, significantly reducing the signal processing amount and power consumption while maintaining transmission quality through focused processing of the necessary signals.
Solution Approach 2:
The patent implements partial action by having terminal stations activate and process only a portion of their available antenna elements - specifically those identified through antenna information from the base station. Rather than using all antennas for reception, the terminal station uses only the necessary subset, reducing power consumption and processing load while maintaining sufficient transmission quality through the selected antennas.
Data Source
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AI summary
A spatial multiplexing wireless transmission system is formed by a base station, and by a plurality of terminal stations that are provided with a plurality of antennas. The base station is provided with an information signal generating portion, a control signal generating portion, a transmission frame generating portion, a multiple beamforming portion, a transmission/reception switching portion, a reception signal processing portion, a propagation environment estimating portion, and an antenna information generating portion. At least one of the terminal stations is provided with a transmission/reception switching portion, a reception signal processing portion, a decoding portion, an antenna information extracting portion, an antenna information generating portion, an transmitting portion, a battery, a remaining battery detecting portion, a transmission request extracting portion, and a propagation environment estimating portion.