PPDU Reception with Multi-RU BCC Interleaving in WLAN
Find Innovative SolutionsGenerate Solutions
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 overall throughput and compatibility with next-generation wireless LAN standards like IEEE 802.11be.
Innovation Solution
The method involves performing BCC interleaving on data bit strings within the PPDU during Multi-RU transmission in the IEEE 802.11be WLAN system, defining specific BCC parameters for interleaving, and decoding the data field received through aggregated resource units, thereby enhancing frequency diversity and throughput.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If BCC interleaving is performed in Multi-RU transmissions, then frequency diversity and throughput are improved, but system complexity and decoding difficulty increase
Solution Approach 1:
The patent segments the BCC interleaving process into distinct stages: data bit string generation, BCC encoding, interleaving based on specific parameters, and mapping to resource units. This segmentation allows the receiving device to decode each stage sequentially, reducing overall decoding complexity while maintaining the throughput benefits of BCC interleaving in Multi-RU transmissions.
Solution Approach 2:
The patent performs preliminary actions by pre-defining BCC parameters and interleaving patterns before transmission. The transmitting device prepares the encoded and interleaved data structure in advance, allowing the receiving device to anticipate the decoding process and reduce computational complexity during real-time reception and decoding operations.
2Reliability
If BCC parameters are defined for Multi-RU transmission, then frequency diversity is enhanced, but system adaptability requirements increase
Solution Approach 1:
The patent employs parameter changes by defining specific BCC parameters that can be adjusted based on transmission conditions. These parameters include interleaving depth, block size, and mapping patterns that can be modified to optimize frequency diversity while maintaining compatibility with different system configurations and requirements.
Solution Approach 2:
The patent creates a universal BCC parameter framework that can function across different Multi-RU transmission scenarios. The defined parameters are designed to be adaptable to various system configurations, allowing the same fundamental mechanism to serve multiple functions and maintain compatibility across different wireless LAN standards and implementations.
3Productivity
If data field decoding is performed on aggregated RUs, then overall system efficiency improves, but processing time and computational load increase
Solution Approach 1:
The patent segments the data field decoding process into manageable stages corresponding to individual resource units within the Multi-RU aggregation. Each RU can be decoded independently or in parallel, reducing the overall processing time while maintaining system efficiency. This segmented approach allows for optimized resource allocation and parallel processing capabilities.
Solution Approach 2:
The patent implements partial action by allowing selective decoding of data fields based on priority and resource availability. Not all aggregated RUs need to be decoded with the same level of computational resources or time constraints, enabling the system to process critical data faster while maintaining overall efficiency through prioritized handling of different data segments.
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.