Wireless Protocol Header Coding for Variable-Length PHY Protection
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Solution Overview
Problem
In wireless communication systems, particularly those using ultra-wideband frequency bands, there is a need for effectively protecting protocol header information, especially when the protocol header length is variable, as existing methods fail to securely process and decode such headers efficiently.
Innovation Solution
A method involving configuring a variable length PHY header and a fixed length PHY header, encoding the fixed length header using a repetition coding scheme, generating a Header Check Sequence (HCS) for error checking, scrambling the MAC header and HCS, and encoding the variable length PHY header and scrambled MAC header using a shortened Reed-Solomon coding scheme, with parity bits for error correction, to ensure secure transmission and decoding of variable length header information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single encoding scheme is used for the entire protocol header, then the encoding process is simple, but the protection effectiveness for variable length header information is insufficient
Solution Approach 1:
The protocol header is divided into two segments: a fixed length PHY header encoded with a first coding scheme and a variable length PHY header encoded with a second coding scheme. This segmentation allows each part to be optimized independently, improving overall protection effectiveness while managing complexity through structured division.
Solution Approach 2:
Different encoding schemes are applied to different parts of the header based on their specific requirements. The fixed length portion uses one scheme optimized for its characteristics, while the variable length portion uses another scheme better suited for handling length variations, achieving local optimization for each segment.
2Reliability
If complex error correction coding is applied to the entire protocol header, then the error protection is improved, but the decoding latency increases
Solution Approach 1:
The header is segmented into fixed and variable length parts with different error correction schemes. The fixed length part can be decoded more quickly using its optimized scheme, reducing overall decoding latency while the variable length part receives appropriate error protection tailored to its characteristics.
Solution Approach 2:
Different coding parameters and schemes are applied to different header segments. By changing the encoding parameters according to the specific requirements of each segment (fixed vs. variable length), the system achieves optimal balance between error protection and decoding speed for each portion.
3Productivity
If the protocol header is encoded as a single unit, then the encoding process is simple, but the ability to handle variable length headers efficiently is reduced
Solution Approach 1:
The header configuration is segmented into fixed and variable length components with distinct encoding processes. This segmentation enables efficient handling of variable length headers through the second coding scheme while maintaining the simplicity of fixed length handling through the first coding scheme.
Solution Approach 2:
The encoding approach dynamically adapts to the header structure: the fixed length portion is always encoded the same way, while the variable length portion is encoded according to its actual length requirements, enabling efficient processing that adapts to the specific data being transmitted.
Data Source
AI summary
Provided are a method of configuring a protocol header in a wireless communication system, and a communication apparatus and method using the protocol header configuration method. The protocol header configuration method may include: configuring a variable length physical layer (PHY) header and a fixed length PHY header; encoding the fixed length PHY header according to a first coding scheme; generating a Header Check Sequence (HCS) to check an error regarding a combination of the fixed length PHY header, the variable length PHY header, and a Media Access Control (MAC) header; scrambling the MAC header and an HCS to generate a scrambled MAC header and HCS; and encoding the variable length PHY header and the scrambled MAC header and HCS according to a second coding scheme.