Multi-User Packet Transmission De-Puncturing and Independent MCS
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Solution Overview
Problem
In multi-user wireless communication systems, existing technologies waste air time and reduce efficiency due to padding with dummy zeros and inefficient modulation and coding schemes, leading to variability in signal-to-noise ratio (SNR) and suboptimal packet formation.
Innovation Solution
A method and system that determine the lowest coding scheme for packet transmission, perform de-puncturing and repetition to optimize packet length, and allow both transmitter and receiver to compute parameters independently, improving SNR and efficiency by lowering modulation and coding schemes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If packet length is determined by the user with the longest packet, then transmission characteristics are maintained, but air time is wasted and efficiency decreases
Solution Approach 1:
The patent applies local quality by allowing different packet lengths for different users within the same multi-user packet. Each user's data is formatted according to their specific requirements (different MCS values, different data lengths) rather than forcing all users to use the same packet length determined by the longest user. This resolves the contradiction by maintaining transmission characteristics for each user locally while improving overall air time efficiency.
2Reliability
If dummy zeros are padded to maintain packet structure, then transmission characteristics are maintained, but valuable air time is wasted
Solution Approach 1:
The patent extracts and removes the unnecessary padding mechanism. Instead of padding all users' data to match the longest user's packet length, the system allows each user's data to be transmitted with its actual required length. The dummy zeros that were previously added to maintain structure are eliminated, thereby reducing air time waste while maintaining transmission characteristics through user-specific formatting.
3Productivity
If higher MCS values are used, then data transmission rate increases, but signal-to-noise ratio requirements increase and power consumption increases
Solution Approach 1:
The patent applies parameter changes by allowing dynamic selection of different MCS values for different users based on their specific channel conditions and data requirements. Instead of forcing all users to use high MCS values for maximum throughput, each user can operate at the appropriate MCS level, optimizing the balance between transmission rate and power consumption. This resolves the contradiction by matching transmission parameters to actual user needs rather than using a uniform high-rate approach.
Data Source
AI summary
A method and system utilized in a wireless communication system transmitting and receiving a multi-user packet is disclosed. The communication system includes a transmitter and a plurality of users in communication therewith. The method and system comprise determining a lowest coding scheme for transmitting the packet; and deriving a coding rate for the efficient transmission of the packet from a standard coding rate by de-puncturing bits in the packet. A system and method in accordance with the present invention provides for an efficient utilization of packet length, and improves the reliability by improving SNR, by lowering the MCS, un-puncturing, and/or repetition. More efficient packed data rates are also provided and both Tx and Rx compute parameters independently.