Wireless Frame Header Segmentation for Dynamic Modulation
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in frame transmission due to mismatched modulation and encoding schemes for headers and payloads, leading to reduced transmission efficiency when high-performance schemes are used for headers, even if the transmission path quality is high, and increased redundancy with lower-performance schemes.
Innovation Solution
An encoding device and decoding device that separate the header into regions for modulation/encoding information and stored information, allowing for flexible selection and application of modulation and encoding schemes based on transmission path conditions, enabling efficient frame transmission by dynamically adjusting schemes for both header and payload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-performance modulation and encoding schemes are used for the header, then the reliability of header demodulation and decoding is improved, but the transmission efficiency of the entire frame decreases due to increased redundancy
Solution Approach 1:
The header is segmented into a first region storing modulation/encoding information and a second region storing stored information. Different modulation and encoding schemes can be applied to different regions, allowing the first region to use high-performance schemes for reliable scheme identification while the second region uses schemes matched to transmission path quality, thus resolving the contradiction between header reliability and overall transmission efficiency.
Solution Approach 2:
Different parts of the header are assigned different quality levels through different modulation and encoding schemes. The first region (modulation/encoding information) uses high-performance schemes locally to ensure reliable scheme identification, while the second region (stored information) uses schemes adapted to transmission conditions, optimizing overall frame transmission efficiency without sacrificing header reliability.
2Productivity
If low-performance modulation and encoding schemes are selected for the payload due to high transmission path quality, then transmission efficiency is improved, but the predetermined high-performance schemes for the header create mismatch and reduce overall efficiency
Solution Approach 1:
The system dynamically adapts modulation and encoding schemes to transmission path conditions. The transmission device selects appropriate schemes based on transmission quality and encodes them in the first region of the header. The reception device decodes these schemes and applies them to the second region of the header and payload, enabling dynamic scheme adaptation that matches transmission conditions and optimizes overall transmission efficiency.
Solution Approach 2:
The modulation and encoding schemes are changed as parameters based on transmission path conditions. The transmission device changes the scheme parameters (modulation type, encoding rate) according to transmission quality and communicates these changes through the first region of the header. The reception device applies these parameter changes to decode the second region and payload efficiently, resolving the mismatch between header and payload scheme adaptation.
3Adaptability or versatility
If a physical layer header optimizing field is added to store modulation and encoding information, then scheme adaptation to transmission path quality is improved, but the transmission efficiency decreases due to the additional field
Solution Approach 1:
The first region of the header serves multiple functions: it stores modulation and encoding information for the second region, stores information about payload modulation/encoding schemes, and enables the reception device to correctly decode the stored information and payload. By making this region multi-functional, the patent avoids adding separate dedicated fields for each type of information, thereby maintaining transmission efficiency while achieving scheme adaptation.
Data Source
AI summary
The present technology relates to an encoding device, an encoding method, a decoding device, a decoding method, a program, and a wireless communication system that enable efficient transmission of frames in accordance with the condition of the transmission path.An encoding device of one aspect of the present technology encodes and modulates transmission data stored in a payload, and encodes and modulates modulation/encoding information by predetermined schemes, the modulation/encoding information indicating at least one of the schemes of encoding and modulation for stored information stored in a header, and at least one of the schemes of encoding and modulation for the transmission data. The encoding device also encodes and modulates the stored information by schemes indicated by the modulation/encoding information, and transmits a frame formed by attaching the header to the payload, the header being formed with a first region and a second region, the first region storing the modulation/encoding information, the second region storing the stored information. The present technology can be applied to devices that perform wireless communication using a 60 GHz band, for example.