Channel Feedback for Multiple Beamformers in Wireless Networks
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Solution Overview
Problem
Current wireless communication systems lack a mechanism for channel feedback in scenarios with multiple beamformers, which is essential for improving network throughput and signal reception performance.
Innovation Solution
A method and device for channel information feedback that involves sending a channel measuring frame from a beamformer to a beamformee, and receiving channel feedback information that includes channel information related to the beamformer and other beamformers, allowing for coordinated channel estimation and feedback across multiple sending ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple beamformers are introduced to increase network throughput, then productivity is improved, but device complexity increases due to lack of channel feedback mechanism
Solution Approach 1:
The channel feedback process is segmented into multiple phases: first beamformer sends channel measuring frame, second beamformer receives it and feeds back channel information, then first beamformer sends its own measuring frame and receives feedback. This segmentation allows multiple beamformers to operate simultaneously without mutual interference while maintaining systematic feedback coordination.
Solution Approach 2:
The patent introduces a coordinated feedback mechanism where beamformers take turns acting as intermediaries. The first beamformer initiates the process by sending measuring frames to the second beamformer, which then feeds back channel information. This intermediary role distribution enables multiple beamformers to share the feedback burden systematically.
2Reliability
If channel feedback is implemented for multiple beamformers, then signal reception performance is improved, but loss of time increases due to sequential feedback process
Solution Approach 1:
The channel feedback process operates in periodic cycles where beamformers alternately send measuring frames and receive feedback. The first beamformer sends a measuring frame, the second beamformer feeds back channel information, then the process reverses. This periodic action pattern enables efficient time utilization while ensuring complete channel information exchange for multiple beamformers.
Solution Approach 2:
The first beamformer initiates the feedback process by sending channel measuring frames before the second beamformer needs to provide feedback. This preliminary action of sending measuring frames first enables the second beamformer to prepare and transmit accurate channel information, reducing overall feedback time while maintaining reliability.
Data Source
AI summary
The present disclosure provides a method and a device for channel information feedback, where the method includes: obtaining, by a beamformer, channel feedback information, where the channel feedback information includes: channel information related to the beamformer and channel information related to other beamformer; the channel information includes: channel information fed back by a beamformee in a same basic service set and channel information fed back by a beamformee in a different basic service set. Channel feedback of multiple sending ends is achieved in the present disclosure.