EHT PPDU dRU Subcarrier Distribution for WLAN Throughput
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Solution Overview
Problem
Existing wireless communication technologies face challenges in achieving high throughput and efficient channel allocation in Wireless Local Area Networks (WLANs), particularly with the increasing demand for access to wireless channels and the need for advanced channel allocation methods.
Innovation Solution
The proposed solution involves an apparatus and method that generate an Extremely High Throughput (EHT) Physical Protocol Data Unit (PPDU) and transmit it on a transmission bandwidth using distributed Resource Units (dRUs). These dRUs are associated with a whole or part of an EHT-Short Training Field (STF) sequence and have subcarriers distributed across one or more frequency sub-blocks within the transmission bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If distributed Resource Units (dRUs) are used for transmitting data portion, then channel allocation efficiency is improved, but complexity of resource unit management increases
Solution Approach 1:
The transmission bandwidth is divided into multiple distributed Resource Units (dRUs) with subcarriers distributed across different frequency sub-blocks. This segmentation allows independent allocation and management of smaller resource units, improving channel allocation efficiency while maintaining manageable complexity through modular resource organization.
2Measurement precision
If dRUs are associated with EHT-STF sequence, then synchronization performance is improved, but complexity of training field processing increases
Solution Approach 1:
The EHT-STF sequence is prepared and associated with dRUs in advance before actual data transmission. This preliminary association establishes synchronization references beforehand, improving synchronization performance while reducing real-time processing complexity during data transmission.
3Reliability
If subcarriers are distributed across frequency sub-blocks, then frequency diversity is improved, but complexity of signal processing increases
Solution Approach 1:
Different frequency sub-blocks are allocated to different dRUs with locally optimized subcarrier distributions. This allows each sub-block to be processed independently with tailored signal processing, improving frequency diversity while reducing overall complexity through localized processing rather than global processing of the entire bandwidth.
Data Source
AI summary
The application relates to an apparatus and method used in Wireless Local Area Networks (WLANs). The apparatus includes: a Radio Frequency (RF) interface; and processor circuitry coupled with the RF interface and configured to: generate an Extremely High Throughput (EHT) Physical Protocol Data Unit (PPDU); and provide the EHT PPDU to the RF interface for transmitting on a transmission bandwidth, wherein any of distributed Resource Units (dRUs) for transmitting a data portion of the EHT PPDU is associated with a whole or part of an EHT-Short Training Field (STF) sequence constituting the EHT PPDU, and any of the dRUs is a resource unit, subcarriers of which are distributed across one or more frequency sub-blocks within the transmission bandwidth for transmitting the EHT PPDU.