Simplified Delimiter Format for Data Packet Transmission
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Solution Overview
Problem
The existing delimiter formats in data packet transmission, particularly in low-speed scenarios like the Internet of Things, result in high overhead and reduced transmission efficiency due to their complexity and resource consumption, especially when using the conventional MPDU delimiter in 802.11 standards.
Innovation Solution
A simplified delimiter format is introduced, which includes a cyclic redundancy code field and an information element type field, allowing for efficient separation of data elements without the need for a lengthy MPDU length field, thereby reducing overhead and complexity in receiving devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the conventional MPDU delimiter format is used in data packet transmission, then the delimiter can separate data elements with complete information, but the overhead becomes large and transmission efficiency decreases
Solution Approach 1:
The patent extracts only the necessary components for delimiter functionality (CRC field for error detection and type field for identification) while removing redundant components (length field). This extraction principle resolves the contradiction by maintaining the essential separation function while eliminating overhead that reduces transmission efficiency.
Solution Approach 2:
The patent employs a simplified, lightweight delimiter structure that uses fewer bits compared to the conventional format. This disposable-like approach creates a minimalistic delimiter that serves its purpose effectively without the burden of excessive overhead, thereby improving transmission efficiency while maintaining reliability.
2Loss of information
If the MPDU length field is included in the delimiter, then the delimiter provides complete information about data elements, but the complexity of the receiving device increases
Solution Approach 1:
The patent removes the length field from the delimiter structure, extracting only the essential CRC and type fields. This extraction reduces the information burden on receiving devices while maintaining sufficient functionality through the type field that enables efficient data element identification and processing.
Solution Approach 2:
The type field in the simplified delimiter enables receiving devices to self-determine the appropriate processing method for each data element based on its type, eliminating the need for explicit length information. This self-service mechanism reduces device complexity by allowing autonomous decision-making at the receiving end.
Data Source
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AI summary
This application discloses a data packet transmission method, a receiving device, and a sending device. The method includes: receiving, by a receiving device, a data packet, where the data packet includes at least one pair of a delimiter and an information element; the delimiter is used to separate two adjacent information elements; the delimiter includes a cyclic redundancy code field and an information element type field; in each pair of a delimiter and an information element, the information element type field is used to indicate a type of the information element; and one type of information element is uniquely corresponding to one information element length; and parsing, by the receiving device, the information element based on the cyclic redundancy code field and the information element type field. According to the data packet transmission method provided in this application, a simpler delimiter format is used, an overhead of the delimiter is reduced on the premise of implementing a function of the delimiter, an occupied resource is reduced, transmission efficiency is improved, and complexity of the receiving device is reduced.