Wireless Data Frame Header Segmentation for Latency Reduction
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Solution Overview
Problem
In wireless communication systems, the complexity and manufacturing cost of receiving devices are increased due to long latency in decoding header information in typical data frames, leading to increased buffering requirements and delayed response frames.
Innovation Solution
The method involves generating and transmitting data frames with multiple headers containing information about payload segments, transmission modes, and error information, allowing for sequential allocation and decoding, reducing latency and buffering by enabling simultaneous or partial decoding of headers before the payload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the device decodes the entire header information sequentially before processing the payload, then the decoding accuracy is improved, but the latency increases and the buffering amount increases
Solution Approach 1:
The header is divided into multiple segments (first header, second header, third header, fourth header) with different functions. The first header contains payload segmentation information, the second header contains transmission mode and length information, the third header contains error information, and the fourth header contains supplementary information. This segmentation allows the receiver to decode and process headers in parallel or partial order, reducing latency while maintaining decoding accuracy.
Solution Approach 2:
The first header is decoded and processed before the payload is fully received, allowing the receiver to prepare decoding resources and buffer management in advance. This preliminary action reduces the overall latency by overlapping header decoding with payload reception, rather than waiting for complete header decoding before starting payload processing.
2Measurement precision
If the device decodes the entire header information sequentially before processing the payload, then the decoding accuracy is improved, but the complexity of the device increases
Solution Approach 1:
The header is divided into multiple segments (first header, second header, third header, fourth header) with different functions. The first header contains payload segmentation information, the second header contains transmission mode and length information, the third header contains error information, and the fourth header contains supplementary information. This segmentation allows the receiver to decode and process headers in parallel or partial order, reducing latency while maintaining decoding accuracy.
Solution Approach 2:
The receiver can perform partial decoding of headers as they are received, rather than waiting for complete header decoding. This partial action approach allows the device to start processing earlier with available information, reducing the need for complex buffering and synchronization mechanisms while maintaining decoding accuracy through subsequent corrections from remaining header segments.
3Loss of time
If the device increases the buffer size to reduce latency, then the latency is reduced, but the manufacturing cost increases
Solution Approach 1:
The header is divided into multiple segments (first header, second header, third header, fourth header) with different functions. The first header contains payload segmentation information, the second header contains transmission mode and length information, the third header contains error information, and the fourth header contains supplementary information. This segmentation allows the receiver to decode and process headers in parallel or partial order, reducing latency while maintaining decoding accuracy.
Solution Approach 2:
The segmented header structure enables the receiver to self-manage buffering requirements by decoding headers as they arrive and using the information to optimize payload buffering dynamically. This eliminates the need for oversized fixed buffers, reducing manufacturing costs while achieving low latency through efficient resource utilization.
4Measurement precision
If the device decodes the entire header information sequentially before processing the payload, then the decoding accuracy is improved, but the response time increases
Solution Approach 1:
The header is divided into multiple segments (first header, second header, third header, fourth header) with different functions. The first header contains payload segmentation information, the second header contains transmission mode and length information, the third header contains error information, and the fourth header contains supplementary information. This segmentation allows the receiver to decode and process headers in parallel or partial order, reducing latency while maintaining decoding accuracy.
Solution Approach 2:
The receiver continuously decodes header segments as they arrive and immediately uses the decoded information to prepare for payload processing. This continuous action eliminates idle waiting periods between header decoding stages, maintaining high productivity while ensuring decoding accuracy through the structured segmentation that guides the decoding process.
Data Source
AI summary
A method for generating a data frame in a wireless communication system includes generating a plurality of first headers having information about the number of segments of a payload, generating a plurality of second headers having information about a transmission mode and a length of predetermined segments among segments of the payload, generating a third header having a transmission mode and a length of remaining segments of the payload; generating a fourth header having supplementary information of the payload and error information of the supplementary information and the first to third headers or error information of the supplementary information and the third header; and generating a data frame with the first to fourth headers sequentially allocated.