Wireless Signal Field Segmentation for Overhead Reduction
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Solution Overview
Problem
In wireless communication systems, particularly in the EHT standard, transmitting signals over wide bandwidths leads to increased signal overhead, necessitating an efficient method to convey control information to multiple STAs effectively.
Innovation Solution
A method where a receiving STA decodes data fields using duplicated signal fields within designated frequency ranges, with control information fields being duplicated based on specific bandwidths to reduce overhead and enhance information transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the conventional HE-SIG-B transmission method is used for wide bandwidth signal transmission, then the transmission method is simple and compatible with existing standards, but the signal overhead increases significantly
Solution Approach 1:
The signal field is divided into multiple segments corresponding to different bandwidth portions. Each segment contains control information for a specific bandwidth range, allowing the system to transmit wide bandwidth signals by combining multiple segmented signal fields rather than using a single conventional signal field structure.
Solution Approach 2:
The patent introduces a new dimension to the signal field structure by organizing control information according to bandwidth segments rather than using the conventional single-structure approach. This dimensional reorganization allows efficient handling of wide bandwidth transmissions while maintaining compatibility with existing standards through structured segmentation.
2Loss of substance
If control information is transmitted for each bandwidth segment separately, then the signal overhead is reduced, but the device complexity increases due to multiple signal fields
Solution Approach 1:
The signal field structure is designed to serve multiple functions simultaneously: it provides control information for different bandwidth segments, maintains compatibility with existing standards, and enables efficient wide bandwidth transmission. This multi-functional design reduces the need for separate specialized structures for each bandwidth segment.
Solution Approach 2:
The patent changes key parameters of the signal field structure, including bandwidth segmentation parameters and control information organization parameters. By adjusting these parameters, the system can optimize the balance between signal overhead reduction and device complexity for different wide bandwidth transmission scenarios.
3Productivity
If wide bandwidth transmission is implemented, then the data rate capability is improved, but the signal overhead increases
Solution Approach 1:
By segmenting the signal field according to bandwidth portions, the patent enables efficient wide bandwidth transmission. Each segment contains only the control information necessary for its specific bandwidth range, allowing the system to achieve high data rate capabilities through wide bandwidth utilization while minimizing signal overhead through targeted control information transmission.
Data Source
AI summary
An embodiment of the present invention relates to a technique for configuring a signal field in a wireless communication system. A receiving STA may receive and decode a PPDU. The PPDU may include a control information field, a plurality of signal fields, and a plurality of data fields. The control information field may be duplicated based on a first bandwidth, and the plurality of signal fields may be duplicated based on a second bandwidth. The second bandwidth may be set to be larger than the first bandwidth.