Adaptive Subchannel Disabling in Beamformed Wireless Systems
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Solution Overview
Problem
In wireless communication systems, the varying link quality of subchannels over time leads to inefficient data transmission, as subchannels with poor quality cannot reliably carry messages, even with maximum power, and existing channel disable schemes require extra effort to compute beamforming weights when subchannels are disabled.
Innovation Solution
Implementing an adaptive subchannel disable mechanism that evaluates the link quality of each subchannel independently and dynamically adjusts the disable status and beamforming weights based on changing wireless link conditions, allowing for separate and independent management of subchannels, enabling efficient data allocation and transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If subchannels are disabled based on poor link quality, then transmission reliability is improved, but computational effort for beamforming weight calculation increases
Solution Approach 1:
The patent divides the frequency bandwidth into multiple subchannels and applies independent disable decisions to each subchannel based on its specific link quality conditions. This segmentation allows the system to disable only problematic subchannels while maintaining others, reducing overall computational burden compared to disabling all subchannels or recalculating beamforming weights for the entire channel.
Solution Approach 2:
The patent evaluates and manages link quality independently for each subchannel, applying different disable decisions based on local conditions. Each subchannel is assessed individually for its link quality, and beamforming weights are calculated only for subchannels that need them, rather than uniformly treating all subchannels the same way.
2Productivity
If independent subchannel management is implemented, then transmission efficiency is improved, but system complexity increases
Solution Approach 1:
The system segments the channel into multiple subchannels and manages each independently, allowing simultaneous operation of multiple subchannels with different disable states. This enables parallel data transmission across enabled subchannels, improving overall productivity while maintaining manageable complexity through modular management.
Solution Approach 2:
The patent implements dynamic subchannel management where disable decisions and beamforming weight calculations are updated in real-time based on changing link quality conditions. The system can adaptively enable or disable subchannels and adjust beamforming weights dynamically, optimizing transmission efficiency without requiring complex static reconfiguration.
Data Source
AI summary
Techniques are provided herein to adaptively and independently disable use of subchannels in transmission sent from a first wireless communication device to a second wireless communication device. The first wireless communication device receives transmission sent to it by the second wireless communication device. The transmissions occupy some or all of a plurality of subchannels within a frequency band that are available for use in the transmission. The transmissions received at the first wireless communication device are evaluated in each subchannel for an over-the-air wireless link between the first wireless communication device and the second wireless communication device. Based on the evaluation, zero or more of the plurality of subchannels are independently disabled in transmissions that are sent by the first wireless communication device to the second wireless communication device.