Dynamic Receiver Filter Mask for High Throughput WLAN
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Solution Overview
Problem
Current wireless communication systems, such as those adhering to IEEE 802.11 standards, face limitations in accommodating higher data throughput rates and various wireless channel configurations without compromising backward compatibility with existing equipment.
Innovation Solution
A method for configuring a receiver filter mask to support high data throughput in wireless local area networks, involving the reception of frames with specific preamble segments and validation tests to determine and reconfigure the filter mask for optimal data transmission, allowing for channel widths of 10 MHz, 20 MHz, or 40 MHz, enabling higher data rates and diverse channel configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed receiver filter mask is used according to IEEE 802.11 standards, then backward compatibility with existing equipment is maintained, but higher data throughput rates and diverse channel configurations cannot be accommodated
Solution Approach 1:
The receiver filter mask is made dynamically reconfigurable based on the detected channel width. The system transitions from a static fixed mask to a dynamic adjustable mask that adapts to different channel configurations (10 MHz, 20 MHz, or 40 MHz) while maintaining compatibility with legacy standards through initial validation testing.
Solution Approach 2:
The receiver changes the parameter of filter mask configuration based on detected channel width. By validating training sequences against different filter mask configurations and selecting the matching configuration, the system enables parameter adaptation from fixed to variable filter settings, supporting both legacy and high-throughput modes.
2Productivity
If the receiver filter mask is reconfigured to support higher data throughput, then data transmission efficiency improves, but compatibility with existing equipment may be compromised
Solution Approach 1:
The system performs preliminary validation testing of training sequences using a default filter mask configuration before committing to a reconfigured state. This preliminary action ensures compatibility verification before transitioning to high-throughput mode, allowing the receiver to safely adapt to higher data rates while maintaining interoperability with legacy equipment.
Solution Approach 2:
The system uses feedback from validation test results to determine whether to reconfigure the filter mask. By monitoring whether training sequences pass validation under the default configuration, the receiver receives feedback that guides the decision to either maintain legacy compatibility or switch to enhanced throughput mode.
3Measurement precision
If validation tests are performed on training sequences, then accurate channel configuration detection is achieved, but processing time increases
Solution Approach 1:
The validation process is segmented into hierarchical stages: first validating against a default filter mask, then conditionally validating against reconfigured masks based on detected channel width. This segmentation allows quick rejection of incompatible frames while enabling thorough validation only when necessary, reducing overall processing time while maintaining detection accuracy.
Data Source
AI summary
A method for receiving a frame in a high data throughput wireless local area network begins by receiving a preamble of the frame via a channel in accordance with a default receiver filter mask. The processing continues by validating the preamble. The processing continues by, when the preamble is validated, interpreting the preamble to determine a high data throughput channel configuration. The processing continues by reconfiguring the default receiver filter mask in accordance with the high data throughput channel configuration to produce a reconfigured receiver filter mask. The processing continues by receiving a data segment of the frame in accordance with the reconfigured receiver filter mask.