Multi-RU PPDU 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 Physical Protocol Data Unit (PPDU) during Multi-RU transmission in the IEEE 802.11be WLAN system, specifically by defining BCC parameters for interleaving, allowing for efficient frequency diversity and improved throughput.
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 processing overhead increase
Solution Approach 1:
The patent applies parameter changes by defining specific BCC interleaving parameters (Nc, Kc, Lc) that control the interleaving process in Multi-RU transmissions. By adjusting these parameters, the system optimizes the balance between frequency diversity gain and signaling overhead, enabling improved throughput while managing complexity through standardized parameter sets.
2Reliability
If BCC interleaving is performed in Multi-RU transmission, then frequency diversity gain is improved, but processing overhead increases
Solution Approach 1:
The patent implements preliminary action by pre-defining BCC interleaving parameters and structures in the standardized PPDU format. The interleaving process is prepared and configured in advance through standardized parameter definitions, allowing the receiving device to efficiently process the interleaved data without excessive computational overhead during actual transmission.
3Productivity
If increased spatial streams are used, then throughput capacity is improved, but signaling technique requirements become more stringent
Solution Approach 1:
The patent applies universality by designing a BCC interleaving mechanism that works across multiple spatial streams and RU configurations. The same interleaving framework and parameter structure can be applied to different Multi-RU scenarios, providing a universal solution that supports increased spatial streams without requiring separate signaling mechanisms for each configuration.
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.