Wireless Terminal Simplified Acknowledgement Frame
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current wireless communication systems face inefficiencies in frame reception, particularly in millimeter waveband communication, where existing methods for acknowledging data frames are cumbersome and inefficient, especially when dealing with aggregated frames and sequence numbering.
Innovation Solution
A wireless communication terminal that uses a simplified acknowledgement frame format, where the sequence number of the last successfully received frame is indicated, allowing for efficient communication by reducing the length of the response frame and improving communication efficiency in good communication environments, and includes features like a bit indicating the start of the sequence number to facilitate immediate data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a sequence starting number and fixed-length bitmap are used to indicate acknowledgements to multiple data frames, then the acknowledgement capability is improved, but the response frame length and processing complexity increase
Solution Approach 1:
The patent extracts only the essential information needed for acknowledgement by using a simple sequence number field instead of a complex bitmap structure. The receiver sends back only the sequence number of the last successfully received frame, eliminating the need for fixed-length bitmaps and sequence starting numbers, thus simplifying the response frame structure while maintaining acknowledgement capability.
Solution Approach 2:
Instead of having the receiver indicate which frames were received correctly using a bitmap (positive indication), the system inverts the approach by having the receiver send the sequence number of the last correct frame, implicitly indicating all frames up to that sequence number were received correctly. This inversion simplifies the frame structure while preserving the acknowledgement function.
2Measurement precision
If detailed sequence numbering and bitmap acknowledgements are implemented, then data frame tracking accuracy is improved, but communication overhead increases
Solution Approach 1:
The patent extracts only the critical sequence number information from the complex bitmap structure. By sending back just the sequence number of the last successfully received frame, the system maintains precise tracking capability while dramatically reducing the amount of data that needs to be transmitted, thus lowering communication overhead.
3Reliability
If complex acknowledgement protocols with bitmaps are used, then frame reception reliability is improved, but processing time and terminal load increase
Solution Approach 1:
The patent removes the complex bitmap processing requirement and extracts only the essential sequence number information. This allows the terminal to quickly determine which frames were received correctly without the computational burden of processing fixed-length bitmaps, thereby reducing processing time while maintaining reception reliability.
Solution Approach 2:
The simplified protocol allows the receiver to self-determine the acknowledgement information by simply identifying its own last successfully received sequence number, eliminating the need for complex bitmap generation and processing. This self-service approach reduces processing time and terminal load while maintaining reliability.
Data Source
AI summary
A wireless communication terminal including a transmitter which transmits, to an external device, a frame including n frame sets each including a subheader field, a frame check sequence field, and a frame body field including data, where n is an integer of two or more. The subheader field includes a sequence number field which notifies a sequence number; a more fragment field which notifies whether or not the data is a last fragment; and a frame body length field which notifies a length of the frame body field. A receiver receives, from the external device, a response frame notifying a successively and successfully received maximum sequence number which indicates a highest sequence number among sequence numbers indicated in sequence number fields of frame sets which have been successively and successfully received by the external device among the n frame sets included in the transmitted frame. The receiver receives one response frame per transmitted frame, even if more than two frame sets among the n frame sets have been successfully received.