Wireless Communication Device Feedback Signal Optimization
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Solution Overview
Problem
In wireless communication systems, the process of determining transmission weights for MIMO communication is hindered by the need for STAs to transmit a large amount of information as feedback signals, leading to increased processing time, especially when multiple STAs are involved, due to limited communication resources.
Innovation Solution
A method where a wireless communication device transmits a reference signal in a known pattern and requests a second measurement result, which is simpler than the first measurement result, from multiple wireless communication terminals, allowing for optimized allocation of communication resources and reduced feedback signal transmission time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If STAs transmit detailed first measurement results as feedback signals, then transmission weight determination precision is improved, but feedback signal transmission time increases
Solution Approach 1:
The patent segments the feedback information into two types: first measurement results (detailed channel state information) and second measurement results (simplified feedback information). By dividing the feedback process into these segments, the system can use second measurement results for quick updates and only transmit first measurement results when necessary, thereby reducing overall feedback transmission time while maintaining precision when needed.
Solution Approach 2:
The patent applies partial action by requesting only second measurement results (simplified feedback) in normal operation conditions, and only requesting first measurement results (detailed feedback) when specific conditions are met. This partial approach to feedback collection reduces the overall amount of data transmission while maintaining adequate precision for most scenarios.
2Adaptability or versatility
If communication resources are allocated to multiple STAs for feedback transmission, then all STAs can provide measurement results, but feedback signal transmission time increases due to resource limitations
Solution Approach 1:
The patent changes the parameter of feedback information from detailed first measurement results to simplified second measurement results. This parameter change reduces the amount of data each STA needs to transmit, allowing multiple STAs to provide feedback within available communication resources without significantly increasing total transmission time.
3Productivity
If a reference signal is transmitted to multiple STAs simultaneously, then coordination efficiency is improved, but determining which STA should receive feedback becomes complex
Solution Approach 1:
The patent introduces a trigger frame as an intermediary mechanism that carries information about which STA should provide feedback. This trigger frame acts as a mediator between the reference signal transmission and the feedback collection process, simplifying the determination of feedback destinations by explicitly indicating which STA is being addressed.
Data Source
AI summary
The present technology relates to a wireless communication device and method, and a wireless communication terminal capable of reducing a processing time. The wireless communication device causes a wireless transmission unit to transmit a reference signal in a known pattern addressed to a wireless communication terminal in coordination with one or more other wireless communication devices, generates a request signal for requesting a second measurement result simpler than a first measurement result of the reference signal from the wireless communication terminal, and causes the wireless transmission unit to transmit the request signal. The present technology can be applied to a communication system.