PPDU Signaling Field Vendor Specific Information Indication

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Solution Overview

Problem

Vendor private designs on Physical Layer Protocol Data Units (PPDUs) in WLAN standards conflict with the standardized PPDU information, leading to interoperability issues and standard customization challenges.

Innovation Solution

The method involves using specific states of disregard bits, validate bits, or validate states in the PPDU signaling fields to indicate vendor-specific information, allowing devices to identify and process vendor-specific data without altering the standard PPDU format, by employing mechanisms like unequal modulation schemes and user quantity indicators.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If vendor private design is performed on PPDU, then customization capability is improved, but compatibility with standard PPDU information deteriorates

Engineering Contradiction:

Improvecustomization capabilityVSAvoidcompatibility with standard PPDU

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The PPDU signaling field is segmented into standard-defined fields and vendor-specific fields. The patent introduces a signaling field that contains both standardized information (for compatibility) and vendor-specific information (for customization), allowing the vendor private design to be separated from the standard PPDU structure while maintaining both functionalities.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces an intermediary signaling field that acts as a mediator between standard PPDU information and vendor-specific information. This signaling field serves as a bridge, allowing receiving devices to identify and process vendor-specific information without interfering with the standard PPDU parsing mechanism, thus maintaining compatibility while enabling customization.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Loss of information

If vendor specific information is added to PPDU, then information conveyance capability is improved, but signaling field complexity increases

Engineering Contradiction:

Improveinformation conveyance capabilityVSAvoidsignaling field complexity

Core Design Contradiction:

Loss of informationVSDevice complexity

Solution Approach 1:

The signaling field is designed with multi-functionality to accommodate both standard PPDU information and vendor-specific information. By making the signaling field universal, it can carry multiple types of information without requiring separate dedicated fields for each purpose, thus avoiding excessive complexity while maintaining rich information conveyance capabilities.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent adds vendor-specific information in an additional dimension of the signaling field structure rather than expanding the existing fields. This dimensional approach allows vendor information to be appended or embedded in a way that doesn't fundamentally alter the standard PPDU structure, maintaining simplicity while enhancing information capacity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS20230388165A1Information indication method and apparatus

Publication Date: 2023.11.30 HUAWEI TECH CO LTD

AI summary

A method includes: A first device generates and sends a PPDU, where a first field in a signaling field of the PPDU is in a first value state that indicates that the PPDU carries vendor specific information, and the first value state is indicated by using one or more of the following states: any value state of a disregard bit, a non-default state of a validate bit, a disregard state, and a validate state.