PPDU Reception Across Aggregated RUs in 320 MHz WLAN
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless LAN systems face challenges in efficiently utilizing increased spatial streams and bandwidth due to limitations in signaling techniques, particularly in the context of the emerging IEEE 802.11be standard, which requires improved methods for transmitting and receiving PPDU through multiple RUs.
Innovation Solution
The proposed solution involves supporting preamble puncturing and aggregation of large-RUs of various sizes in a non-OFDMA scheme, enhancing transmission efficiency and throughput by allowing for the aggregation of multiple RUs in a combination of large-RUs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple RUs are aggregated into large-RUs in non-OFDMA scheme, then transmission efficiency and throughput are increased, but signaling technique complexity increases
Solution Approach 1:
The patent segments the channel bandwidth into multiple RUs and then aggregates selected RUs into large-RUs. This segmentation approach allows flexible configuration of large-RU sizes and positions, enabling the system to achieve high transmission efficiency while managing signaling complexity through structured resource organization
Solution Approach 2:
The patent introduces dynamic RU aggregation where the size, position, and configuration of large-RUs can be adjusted based on channel conditions and traffic requirements. This dynamic approach allows the system to optimize transmission efficiency adaptively while the signaling mechanism manages the complexity of these dynamic configurations
2Productivity
If increased bandwidth and spatial streams are utilized, then throughput is increased, but signaling technique limitations become more apparent
Solution Approach 1:
The patent extends the resource allocation from traditional single-dimension approaches by enabling two-dimensional RU aggregation in both frequency and spatial domains. This allows the system to utilize increased bandwidth and spatial streams more effectively, achieving higher throughput while the multi-dimensional resource organization helps manage signaling complexity
3Adaptability or versatility
If large-RU aggregation is supported in non-OFDMA, then transmission flexibility is improved, but resource allocation complexity increases
Solution Approach 1:
The patent creates a universal resource allocation framework that can handle both traditional non-OFDMA transmissions and new large-RU aggregated transmissions. This multi-functional approach allows the same signaling mechanism to manage diverse transmission modes, improving flexibility while avoiding the need for separate complex allocation protocols
Data Source
Figure 1(a)~1(b)
Figure 2
Figure 3
AI summary
Proposed are a method and apparatus for receiving a PPDU in a wireless LAN system. Specifically, a reception STA receives a PPDU from a transmission STA through a broadband and decodes the PPDU. The PPDU includes a control field and a data field. When the broadband is a 320/160+160 MHz band including first to fourth 80 MHz sub-channels, the first 80 MHz sub-channel includes a first 996 RU, the second 80 MHz sub-channel includes a second 996 RU, the third 80 MHz sub-channel includes a third 996 RU, and the fourth 80 MHz sub-channel includes a first 484 RU. The data field is received through a first multiple RU in which the first to third 996 RUs and the first 484 RU are aggregated.