Multi-PSDU Wireless Frames for Independent Packet Decoding
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Solution Overview
Problem
Existing wireless communication technologies face challenges in efficiently transmitting and receiving data packets due to high overhead and limited flexibility in frame formats, particularly in high-efficiency and extremely high-throughput wireless standards like 802.11be, leading to suboptimal resource utilization and reliability issues.
Innovation Solution
A wireless communication method that transmits and receives packets with a frame format comprising multiple constituent physical service data units (PSDUs), each with its own control portion, allowing for flexible and efficient resource scheduling and decoding, using PHY headers and control portions to indicate aggregation and provide independent decoding for each PSDU.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single aggregated PPDU format is used for transmission, then resource utilization can be improved through aggregation, but flexibility in resource scheduling and reliability of individual data units deteriorate due to coupled decoding requirements
Solution Approach 1:
The patent segments the aggregated data unit into multiple independent constituent PSDUs, each with its own control portion containing decoding information. This allows each PSDU to be independently decoded and processed, maintaining the benefits of aggregation while enabling flexible resource scheduling and improved reliability through selective retransmission of only failed PSDUs.
2Productivity
If a single aggregated PPDU format is used for transmission, then resource utilization can be improved through aggregation, but reliability deteriorates due to coupled decoding requirements affecting individual PSDUs
Solution Approach 1:
The patent segments the aggregated data unit into multiple independent constituent PSDUs, each with its own control portion containing decoding information. This allows each PSDU to be independently decoded and processed, maintaining the benefits of aggregation while enabling flexible resource scheduling and improved reliability through selective retransmission of only failed PSDUs.
Solution Approach 2:
Each constituent PSDU is equipped with its own control portion containing specific decoding information tailored to that PSDU, such as modulation and coding scheme (MCS), resource unit (RU) allocation, and target station identifiers. This local quality approach ensures that each PSDU can be independently validated and decoded, improving overall reliability.
3Loss of energy
If control information is shared across aggregated PSDUs, then overhead can be reduced, but decoding flexibility and error handling capability deteriorate
Solution Approach 1:
The patent segments the control information into common preamble fields and individual control portions for each PSDU. This segmentation allows for efficient use of shared resources while maintaining the ability to independently decode and handle each PSDU, balancing overhead reduction with decoding flexibility.
Solution Approach 2:
The common preamble fields serve multiple functions including indicating the number of constituent PSDUs, total length, and providing shared decoding information. This universal approach reduces overhead while the individual control portions maintain decoding flexibility for each PSDU.
4Reliability
If independent control portions are added to each PSDU, then decoding flexibility and reliability improve, but frame complexity and processing overhead increase
Solution Approach 1:
The patent segments the control information into common preamble fields and individual control portions for each PSDU. This segmentation allows for efficient use of shared resources while maintaining the ability to independently decode and handle each PSDU, balancing overhead reduction with decoding flexibility.
Solution Approach 2:
The patent implements control portions for each PSDU only when aggregation is detected through preamble indication. This partial action approach adds the necessary complexity only when needed, rather than universally, thereby improving reliability and flexibility without unnecessarily increasing frame complexity in all cases.
Data Source
AI summary
Provided are a wireless communication method and related apparatus. The wireless packet can be transmitted with a frame format including multiple constituent PSDUs. Each of the multiple constituent PSDUs comprises a PSDU. A control portion for the PSDU is used for reception and decoding of the PSDU.