Pre and Post FEC Padding Parameters for IEEE 802.11be Radio Transmission
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Solution Overview
Problem
The existing WiFi radio transmission standards, such as IEEE 802.11ax, require updates in packet extension and pre/post-FEC padding mechanisms to accommodate higher spatial streams, larger resource units, and 4K-QAM, which are not adequately supported by the current definitions and signaling.
Innovation Solution
The introduction of a new definition for packet extension and pre/post-FEC padding parameters that are compliant with the advanced features of IEEE 802.11be, including extended NSD_Short tables, dual-carrier modulation support, and enhanced PPE thresholds fields to handle increased bandwidth, multi-RUs, and 4K-QAM.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the existing packet extension and pre/post-FEC padding mechanisms are used, then the processing requirements are relaxed for current WiFi standards, but the mechanism cannot accommodate higher spatial streams, larger resource units, and 4K-QAM in the new IEEE 802.11be standard
Solution Approach 1:
The patent extends the NSD_Short table with additional entries for new RU sizes (e.g., 242+26, 484+242, 996+484, 242+484+996, 484+3×996, 4×996) and updates PPE Thresholds fields to support higher spatial streams (up to 16), larger RU sizes, and 4K-QAM modulation. This parameter extension allows the same basic mechanism to handle both legacy and new standard requirements without fundamental redesign.
Solution Approach 2:
The extended mechanism serves multiple functions: it maintains backward compatibility with IEEE 802.11ax while simultaneously supporting IEEE 802.11be features. The same packet extension and padding logic handles both legacy RU sizes and new multi-RU combinations, as well as both 1K-QAM and 4K-QAM modulation schemes, making the system universally applicable across standard versions.
2Adaptability or versatility
If packet extension and pre/post-FEC padding are extended to support new RU sizes and modulation schemes, then support for advanced features is achieved, but the signaling and definition complexity increases
Solution Approach 1:
The patent segments the parameter extension into manageable components: extending the NSD_Short table with specific RU size combinations, extending the PPE Thresholds fields with specific bit patterns for different spatial stream counts and modulation types, and maintaining separate handling logic for pre-FEC and post-FEC padding. This segmentation makes the complexity manageable and systematic rather than monolithic.
Solution Approach 2:
The patent performs preliminary configuration by pre-defining the extended NSD_Short table entries and PPE Thresholds field values before actual transmission occurs. This allows receiving devices to be pre-configured with the necessary parameters, eliminating the need for complex real-time negotiation and reducing signaling overhead during data transmission.
Data Source
AI summary
The present disclosure relates to techniques for forward error correction and packet padding in radio transmission, e.g. WiFi communication schemes such as IEEE 802.11ax and 802.11be. In particular, the disclosure relates to a communication device configured to: transmit and/or receive a data frame based on a set of pre&post-Forward Error Correction (pre&post-FEC) parameters and a set of packet extension (PE) parameters, wherein the set of pre&post-FEC parameters is based on an extension of a set of pre&post-FEC parameters defined for a second radio transmission technology with respect to a size of resource units (RUs) supported by a first radio transmission technology, wherein the set of pre&post-FEC parameters is based on a combination of RUs that is supported by the first radio transmission technology, and wherein the set of PE parameters is based on an extension of a set of PE parameters defined for the second radio transmission technology.