Multi-RU BCC Interleaving for Higher WLAN Throughput
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Solution Overview
Problem
Current WLAN systems face challenges in efficiently utilizing increased spatial streams and bandwidth due to limitations in signaling techniques, particularly in the context of the next-generation IEEE 802.11be standard, which requires improved methods for handling Multi-RU transmissions to enhance throughput.
Innovation Solution
The proposed method involves performing BCC interleaving on data bit strings within a Multi-RU framework, specifically defining BCC parameters for interleaving during transmission, allowing for efficient decoding and frequency diversity gains in Multi-RU scenarios, particularly in the IEEE 802.11be system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If BCC interleaving is performed in Multi-RU transmission, then frequency diversity gain and throughput are improved, but signaling complexity and parameter definition requirements increase
Solution Approach 1:
The patent applies parameter changes by defining specific BCC interleaving parameters (Nc, Kc, Lc) for Multi-RU transmission. These parameters control the interleaving process to achieve frequency diversity gain while managing signaling complexity. The parameters are explicitly defined in the standard to enable efficient implementation without excessive complexity.
Solution Approach 2:
The patent segments the data bit string into multiple blocks for interleaving across different RUs in the Multi-RU transmission. This segmentation allows frequency diversity to be achieved by distributing coded bits across multiple resource units, improving robustness against frequency-selective fading while maintaining manageable signaling overhead.
2Quantity of substance
If increased spatial streams are used, then data transmission capacity is improved, but signaling technique requirements and system complexity increase
Solution Approach 1:
The patent employs universal BCC interleaving parameters that can be applied across multiple spatial streams and RU configurations. This multi-functionality allows the same parameter set to serve different transmission scenarios, reducing the need for separate signaling mechanisms for each spatial stream configuration.
Solution Approach 2:
The patent enables dynamic adaptation of BCC interleaving parameters based on the number of spatial streams and RU allocation. The system can adjust parameters like Nc and Lc dynamically to match the transmission conditions, optimizing capacity utilization while keeping signaling overhead manageable through standardized parameter sets.
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.