Multi-RU PPDU Reception With BCC Interleaving Across Aggregated RUs
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Solution Overview
Problem
Current WLAN systems face challenges in efficiently utilizing increased spatial streams and bandwidth, particularly in receiving Physical Protocol Data Units (PPDUs) with BCC interleaving in Multi-RU transmissions, which affects throughput and compatibility with next-generation wireless LAN standards like IEEE 802.11be.
Innovation Solution
A method for receiving PPDUs with BCC interleaving in Multi-RU transmissions is proposed, where a BCC parameter is defined to perform interleaving during transmission, allowing for improved frequency diversity and increased throughput by aggregating multiple resource units (RUs) and supporting backward compatibility with 802.11ax systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If BCC interleaving is performed in Multi-RU transmission, then frequency diversity gain is improved and throughput is increased, but device complexity and implementation difficulty increase
Solution Approach 1:
The patent segments the data bit string into multiple blocks corresponding to different Resource Units (RUs) within the Multi-RU structure. Each RU handles a specific segment of the interleaved data, allowing parallel processing and reducing the complexity burden on a single processing unit while achieving frequency diversity across the aggregated bandwidth
Solution Approach 2:
The patent introduces a new dimensional structure by aggregating multiple RUs into a Multi-RU framework. This creates an additional layer of organization beyond traditional single-RU transmission, enabling BCC interleaving to operate across the Multi-RU dimension and achieve frequency diversity that spans multiple frequency resources simultaneously
2Productivity
If BCC interleaving is performed in Multi-RU transmission, then frequency diversity gain is improved and throughput is increased, but compatibility with existing standards becomes more difficult to maintain
Solution Approach 1:
The patent designs the BCC interleaving mechanism for Multi-RU transmission to be universally applicable while maintaining compatibility with existing 802.11ax standards. The same BCC interleaving principles can be applied whether transmitting in a single RU or aggregated Multi-RU structure, allowing the system to function across different transmission modes and maintain backward compatibility while enabling enhanced throughput in next-generation implementations
Data Source
AI summary
Proposed are a method and apparatus for receiving a PPDU on which BCC interleaving has been performed in a Multi-RU in a wireless LAN system. Specifically, a reception STA receives, from a transmission STA, a PPDU comprising a data field and decodes the data field. The data field is received via a Multi-RU which is an aggregate of a first RU and a second RU. The data field is generated on the basis of a coded bit string included in a BCC interleaver block. The coded bit string is obtained by interleaving a data bit string on the basis of first and second parameters. The data bit string is interleaved as the data bit string is entered into the BCC interleaver block in rows on the basis of the first parameter and is read out in columns of the BCC interleaver block on the basis of the second parameter.