Wireless Protocol Header Configuration for Variable Length Data
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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 and efficiently process such information.
Innovation Solution
The method involves configuring a protocol header with a fixed length PHY header, a variable length PHY header, a MAC header, and a Header Check Sequence (HCS), where the fixed length PHY header is encoded using a repetition coding scheme, and the variable length PHY header, HCS, and MAC header are encoded using a shortened Reed-Solomon (RS) coding scheme, along with an antenna training indicator field for error correction and antenna training.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single coding 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 and a variable length PHY header. Different coding schemes are applied to each segment - repetition coding for the fixed portion and shortened RS coding for the variable portion. This segmentation allows optimized protection for each type of header information without applying a overly complex coding scheme to the entire header.
Solution Approach 2:
Different coding schemes are applied to different parts of the protocol header based on their specific requirements. The fixed length PHY header uses repetition coding which is simpler and sufficient for its needs, while the variable length PHY header uses shortened RS coding which provides better error correction for the more critical variable portion. This local optimization improves overall protection effectiveness without unnecessarily complicating the entire encoding process.
2Reliability
If shortened RS coding is used for variable length PHY header, then error correction capability is improved, but process latency increases due to zero byte insertion and RS decoding
Solution Approach 1:
The number of zero bytes required for shortened RS coding is predetermined and calculated in advance based on the payload length. This preliminary determination of zero byte count allows the encoding process to proceed efficiently without requiring complex real-time calculations or iterative adjustments during the encoding phase, thereby reducing process latency while maintaining error correction capability.
3Ease of manufacture
If fixed length PHY header is encoded with repetition coding, then encoding simplicity is maintained, but protection effectiveness for variable length information is reduced
Solution Approach 1:
The protocol header is divided into two segments: a fixed length PHY header and a variable length PHY header. Different coding schemes are applied to each segment - repetition coding for the fixed portion and shortened RS coding for the variable portion. This segmentation allows optimized protection for each type of header information without applying a overly complex coding scheme to the entire header.
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 may include a fixed length physical layer (PHY) header containing information associated with the number of Media Access Control (MAC) service data units, a variable length PHY header containing information associated with a segment constituting a payload, a MAC header containing information associated with the MAC service data units, and a Header Check Sequence (HCS) checking an error regarding a combination of the fixed length PHY header, the variable length PHY header, and the MAC header.