Block Acknowledgment Frame Bitmap Length Indicator
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Solution Overview
Problem
Current wireless communication systems face inefficiencies in acknowledgment frame length signaling, leading to reduced throughput and increased overhead, particularly in flexible signaling techniques for wireless communication systems.
Innovation Solution
The implementation of an apparatus configured to generate a block acknowledgment (BA) frame with a fragment number field and a bitmap length indicator, allowing for flexible adjustment of the block ACK bitmap length within the BA frame, enabling efficient transmission and reception of acknowledgment signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed-length block ACK frame is used, then the frame structure is simple and easy to process, but the overhead increases and throughput decreases when fewer acknowledgments are needed
Solution Approach 1:
The patent implements a dynamic block ACK frame structure where the bitmap length is variable rather than fixed. The frame includes a bitmap length indicator field that allows the receiver to specify different bitmap lengths (e.g., 8, 16, 32, or 64 bits) based on the actual number of acknowledgments needed. This dynamic adjustment enables the system to optimize overhead by using shorter bitmaps when fewer packets are acknowledged, while maintaining the ability to handle larger batches when necessary, thus resolving the contradiction between fixed structure simplicity and variable overhead efficiency.
2Productivity
If a variable-length block ACK frame is implemented, then overhead is reduced and throughput increases, but the frame structure becomes more complex
Solution Approach 1:
The patent segments the block ACK frame into distinct functional fields: a bitmap length indicator field that specifies the bitmap size, a starting sequence control field that identifies the sequence number, and a variable-length bitmap field that contains the actual acknowledgment bits. This segmentation allows each field to be processed independently and clearly defines the structure of variable-length frames, reducing the complexity burden while enabling efficient variable-length operation.
Solution Approach 2:
The patent incorporates a bitmap length indicator field at the beginning of the block ACK frame structure, which预先 (in advance) specifies the length of the subsequent bitmap field. This preliminary indication allows the receiving device to allocate appropriate buffer space and process the frame efficiently without needing to dynamically determine the bitmap length during processing, thereby reducing computational complexity while maintaining variable-length flexibility.
3Productivity
If traditional acknowledgment methods are used, then compatibility with existing systems is maintained, but wireless communication efficiency is reduced
Solution Approach 1:
The patent designs the block ACK frame with a universal structure that can accommodate multiple bitmap lengths (8, 16, 32, 64 bits) through the bitmap length indicator field. This multi-functional design allows the same frame format to adapt to different acknowledgment scenarios - from small batches of packets to large batches - while maintaining compatibility with the existing block ACK mechanism. The variable-length capability provides system flexibility without requiring multiple different frame formats, thus improving wireless communication efficiency while preserving adaptability.
Data Source
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AI summary
A method, an apparatus, and a computer-readable medium for wireless communication are provided. In an aspect, the apparatus is configured to receive at least one frame from at least one wireless device and to generate a BA frame that may include a block ACK bitmap based on the received at least one frame. The BA frame may include a fragment number field and a bitmap length indicator within the fragment number field that indicates a length of the block ACK bitmap within the BA frame. The apparatus may be configured to transmit the generated BA frame to the at least one wireless device.