Radio Frame Length Encoding for CSMA/CA Data Transmission
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Solution Overview
Problem
The CSMA/CA wireless standard limits the amount of information that can be represented by a single frame, making it difficult to modulate data sequences into frame lengths for transmission.
Innovation Solution
A program executed in a transmitter generates and transmits radio frames with varying frame lengths to represent data, and a receiver decodes these frame lengths into bit sequences to represent the data, allowing for efficient data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If the CSMA/CA wireless standard is used with fixed frame lengths, then wireless communication compatibility is maintained, but the amount of information that can be represented is limited
Solution Approach 1:
The patent changes the frame length parameter dynamically to represent different data values. By varying the frame length within the CSMA/CA protocol framework, the system can encode multiple bits of information in each frame transmission, thereby increasing information representation capacity while maintaining protocol compatibility
Solution Approach 2:
The patent introduces a new dimension for data encoding by using frame length as an additional information carrier beyond the traditional frame payload. This dimensional expansion allows the system to convey more information per frame without violating CSMA/CA standards, effectively overcoming the information capacity limitation
2Productivity
If frame lengths are used to represent data sequences, then data transmission efficiency is improved, but the complexity of frame generation and decoding increases
Solution Approach 1:
The patent applies preliminary action by pre-defining the correspondence between frame lengths and data values in a lookup table. The transmitter queries this table to determine the appropriate frame length for each data sequence, and the receiver uses the same table to decode received frame lengths back into original data, simplifying the encoding and decoding processes while maintaining high transmission efficiency
Solution Approach 2:
The patent uses copying by implementing identical frame length-to-data mapping tables in both the transmitter and receiver. This ensures consistent encoding and decoding operations, reducing processing complexity through standardized lookup operations rather than requiring complex real-time calculation algorithms
3Measurement precision
If multiple radio frames are transmitted sequentially, then data representation accuracy is improved, but transmission time increases
Solution Approach 1:
The patent applies partial action by transmitting only the necessary number of frames required to represent the complete data sequence. Each frame's length is carefully selected to encode specific data values, avoiding unnecessary frame transmissions. The system transmits frames in batches, processing and transmitting data in efficient groups rather than requiring complete sequential transmission of all possible data elements
Data Source
AI summary
A transmitter generates a header frame having a frame length indicating the beginning of data to be transmitted, data frames having frame lengths representing the data to be transmitted, and an end frame having a frame length indicating the end of the data to be transmitted. Then, for all of the header frame, data frames and end frame, the transmitter executes transmitting the kth frame when the wireless communication space is available, thereby transmitting the header frame, data frames and end frame, one after another, in accordance with the CSMA/CA scheme.