802.11 Data Frame Format Detection for Cross-Version Compatibility
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Solution Overview
Problem
Incompatibility between data frames in different protocol versions of the 802.11 series due to varying physical layer frame formats in wireless local area networks (WLAN) causes communication challenges.
Innovation Solution
A data frame detection method and apparatus that generates and detects an indication based on the frame format, allowing the frame format to be determined by analyzing characteristics such as energy, amplitude, frequency, and phase relationships within the data frame.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different physical layer frame formats are defined in various 802.11 protocol versions, then protocol functionality and performance are improved, but incompatibility between data frames in different protocol versions occurs
Solution Approach 1:
The patent applies preliminary action by embedding format identification information in the physical layer frame structure before transmission. The frame format characteristics (such as specific field patterns, preamble structures, or modulation schemes) are predetermined and built into each frame type, allowing receiving devices to identify the frame format in advance through detection of these characteristic patterns, thus resolving compatibility issues before processing occurs
Solution Approach 2:
The patent introduces an intermediary mechanism through format detection modules that analyze intermediate signals between different protocol versions. These modules detect characteristic patterns in the received signal (such as specific training sequence patterns, preamble structures, or field arrangements) and translate them into frame format identification, acting as a mediator that enables compatible interpretation of frames from different 802.11 versions
2Reliability
If frame format detection capability is added to handle multiple protocol versions, then compatibility is improved, but device complexity increases
Solution Approach 1:
The patent extracts the format detection function as a separate, dedicated module that operates independently from the main protocol processing logic. By extracting the detection of frame format characteristics (such as preamble patterns, training sequences, or specific field arrangements) into a standalone component, the system can identify frame formats without complicating the core protocol handling, thus improving compatibility while managing device complexity
Solution Approach 2:
The patent implements self-service through automatic frame format detection and identification mechanisms. The receiving device autonomously analyzes characteristic patterns in the received signal (such as specific preamble structures, training sequence patterns, or field arrangements) and automatically determines the frame format without requiring manual configuration or complex external control, thereby improving compatibility with minimal additional complexity
Data Source
AI summary
Provided are a data frame detection method and apparatus and a storage medium. The method includes generating an indication in a data frame based on the frame format of the data frame, where the frame format of the data frame has a corresponding relationship with characteristics of the indication; and sending the data frame. The frame format of the data frame has a corresponding relationship with the characteristics of the indication. The characteristics of the indication can be detected after the data frame is received. The frame format of the data frame can be determined based on the characteristics of the indication and the corresponding relationship.