Distributed Resource Unit Tone Planning for 160 MHz WLAN Throughput
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless LAN systems face challenges in providing advanced communication environments with high throughput, low latency, and ultra-high reliability, particularly in supporting multiple access points and efficient utilization of multiple bands.
Innovation Solution
A method and device utilizing a distributed resource unit tone plan, specifically defining 26-tone distributed resource units (DRUs) within a 160MHz channel for transmission and reception, enabling efficient utilization of bandwidth and improved communication protocols.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional resource unit allocation is used in WLAN systems, then system compatibility is maintained, but throughput and bandwidth utilization are insufficient for advanced communication requirements
Solution Approach 1:
The 160MHz channel bandwidth is segmented into multiple distributed resource units (26-tone DRUs, 52-tone DRUs, 106-tone DRUs, 242-tone DRUs, 484-tone DRUs, and 996-tone DRUs) with different tone allocations. This segmentation enables flexible resource distribution across the frequency spectrum, allowing the system to achieve higher throughput by allocating appropriate DRU sizes to different stations based on their requirements, while maintaining manageable complexity through standardized DRU definitions.
Solution Approach 2:
The patent implements dynamic resource unit allocation where the access point can flexibly assign different types of DRUs (26-tone, 52-tone, 106-tone, 242-tone, 484-tone, 996-tone) to different stations based on real-time channel conditions, traffic requirements, and station capabilities. This dynamic allocation optimizes throughput and bandwidth utilization while adapting to changing communication environments.
2Area of stationary object
If distributed resource units are allocated across 160MHz bandwidth, then bandwidth utilization is improved, but frequency resource management complexity increases
Solution Approach 1:
The patent defines a universal set of DRU types (26-tone, 52-tone, 106-tone, 242-tone, 484-tone, 996-tone) that can be applied across the entire 160MHz bandwidth. Each DRU type serves multiple functions: they can be allocated to different stations, used for different traffic types, and combined in various configurations. This universality simplifies frequency resource management by providing a standardized framework that handles bandwidth utilization efficiently without requiring complex custom allocations for each scenario.
3Adaptability or versatility
If multiple DRU types are supported for flexible allocation, then adaptability is improved, but system complexity increases
Solution Approach 1:
The patent achieves adaptability by changing the parameter of tone allocation size while maintaining a consistent DRU structure. Six different tone parameters (26, 52, 106, 242, 484, 996) are defined, allowing flexible allocation to match different traffic requirements and channel conditions. The system complexity is managed by establishing clear mapping relationships between these parameters and standardized allocation procedures, enabling flexible adaptation without proportionally increasing system complexity.
Data Source
Figure 1
Figure 2~3
Figure 4~5
AI summary
Disclosed are a distributed resource unit tone plan-based transmission or reception method and apparatus in a wireless LAN system. The method performed by a first station (STA) in a wireless local area network (WLAN) system, according to an embodiment of the present disclosure, may comprise the steps of: generating a physical layer protocol data unit (PPDU) including one or more fields, the one or more fields being mapped onto one or more distributed resource units (DRUs); and transmitting the PPDU to one or more second STAs on a bandwidth including a 160 MHz channel. On the basis that the one or more DRUs include a 26-tone DRU, the 26-tone DRU is one of 72 pre-defined 26-tone DRUs, wherein a nth (n = 1, 2, ..., 72) 26-tone DRU may be defined as every 72th subcarrier including an nth lowest subcarrier among available subcarriers in the 160 MHz channel.