EHT-STF Mapping for Distributed-Tone RUs in 6GHz LPI Uplink
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Solution Overview
Problem
Existing EHT-STF transmission methods are not suitable for distributed-tone resource units (dRUs) in 6GHz low-power indoor systems due to the non-continuous nature of subcarriers, leading to lower transmission power and reduced coverage range.
Innovation Solution
Implementing schemes for EHT-STF transmission using distributed tone resource units in 6GHz low-power indoor systems, including the various schemes described separately or jointly. That is, although these possible solutions may be described below, the EHT-STF transmission is defined with the specific segments or methods described below, the existing methods are not suitable for EHT-STF transmission for dRUs in 6GHz LPI systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If EHT-STF transmission uses regular RUs with continuous subcarriers, then transmission power is maintained at appropriate levels, but the method cannot be directly applied to dRUs where subcarriers are separated
Solution Approach 1:
The patent segments the dRU into multiple subblocks and processes EHT-STF transmission separately for each subblock. This segmentation allows the transmission method to adapt to the distributed tone structure while maintaining reliability by ensuring proper power measurement and auto-detection in each segment independently
Solution Approach 2:
The patent changes the transmission parameters specifically for dRUs by adjusting the EHT-STF sequence mapping and power spectral density distribution to match the distributed tone structure. This parameter adaptation enables reliable transmission despite the non-continuous subcarrier arrangement
2Object-affected harmful factors
If LPI systems in 6GHz use strict PSD requirements, then spectral density is controlled, but transmission power decreases and coverage range shortens
Solution Approach 1:
The patent transitions from conventional continuous subcarrier allocation to distributed-tone allocation across frequency subblocks, effectively adding a dimensional aspect to resource allocation. This allows power to be distributed across a wider frequency spectrum while maintaining spectral density compliance, thereby extending coverage range without violating PSD requirements
3Power
If dRUs distribute subcarriers over wider bandwidth to achieve higher transmission power, then coverage range improves, but EHT-STF transmission methods become incompatible
Solution Approach 1:
The patent develops a universal EHT-STF transmission framework that can handle both regular RUs and dRUs through a unified approach. The method universally applies to different RU types by adapting the sequence mapping and subblock processing, reducing the need for separate specialized methods while maintaining compatibility with distributed-tone structures
Data Source
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AI summary
Various schemes pertaining to extremely-high-throughput short training field, EHT-STF, transmission for distributed-tone resource units, dRUs, in 6GHz low-power indoor, LPI, systems are described. A communication entity distributes subcarriers of a RU over a frequency subblock of a bandwidth to generate a dRU associated with an EHT-STF of an uplink, UL, trigger-based, TB, physical-layer protocol data unit, PPDU, (1710). The communication entity then transmits the dRU associated with the EHT-STF in a tone range of a regular RU, rRU, corresponding to the frequency subblock (1720).