Wideband Wireless Preamble Configuration With Signal Field Duplication
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Solution Overview
Problem
Existing wireless LAN systems face challenges in efficiently utilizing wide bandwidths and managing preamble structures for high throughput and data rates, particularly in emerging standards like IEEE 802.11be (EHT), which require enhanced bandwidth and multi-link operations.
Innovation Solution
The proposed solution involves using wide bandwidths (160/240/320 MHz) with preamble puncturing and multiple RU transmission, along with EHT SIG transmission methods and BCC interleaver configurations, allowing for efficient bandwidth utilization and signal field duplication in specific bandwidth units.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If wide bandwidth (160/240/320 MHz) is used for high throughput, then data rate is improved, but device complexity increases
Solution Approach 1:
The wide bandwidth signal is segmented into multiple smaller subcarriers that are processed independently through parallel FFT operations. This segmentation allows the system to handle wide bandwidth (160/240/320 MHz) by dividing it into manageable frequency bins, reducing the complexity of single-channel processing while maintaining high data throughput through aggregated parallel processing.
2Loss of time
If signal field is duplicated in units of second bandwidth within first bandwidth, then receiving STA can verify information without checking entire bandwidth, but loss of information increases
Solution Approach 1:
The signal field containing bandwidth allocation information is duplicated across multiple bandwidth segments (e.g., duplicated in units of 20 MHz within 80 MHz, or across 160/240/320 MHz). This copying mechanism allows receiving stations to verify critical allocation information by checking only a portion of the total bandwidth, significantly reducing verification time while the redundancy ensures information integrity through cross-validation.
3Productivity
If preamble puncturing and multiple RU transmission are used, then bandwidth utilization is improved, but device complexity increases
Solution Approach 1:
The system dynamically allocates resource units (RUs) across the available bandwidth, allowing flexible puncturing of preamble sequences and adaptive assignment of multiple RUs to different users or data streams. This dynamic resource allocation optimizes bandwidth utilization by activating only the necessary frequency resources while keeping the system architecture flexible enough to handle various transmission scenarios without requiring completely new hardware for each configuration.
Data Source
AI summary
According to various embodiments, a reception STA may receive a physical layer protocol data unit (PPDU) including a first signal field, a second signal field, and a data field. The PPDU may be configured to be transmitted to a single user. The second signal field may consist of one content channel, and the one content channel may be duplicated in a first bandwidth in units of a second bandwidth.