Wireless Communication Apparatus Selective Retransmission
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Solution Overview
Problem
Current wireless communication systems face challenges in reducing the time required to transmit data frames to wireless terminals, particularly in cooperative transmission methods where all data frames need to be shared and transmitted simultaneously, leading to increased frequency band occupation and processing time.
Innovation Solution
A wireless communication apparatus that determines which data frames have been received or not received by both wireless communication apparatuses and terminals, allowing for selective retransmission of only the missing frames, thereby reducing the overall transmission time and frequency band occupation by coordinating transmissions between multiple access points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all data frames are shared and transmitted simultaneously from multiple access points to wireless terminals, then the data transmission reliability is improved, but the frequency band occupation time and processing time increase
Solution Approach 1:
The patent segments the data frames into two categories: those already received by all terminals and those not yet received. Only the unreceived frames are selected for retransmission in the next frame, dividing the transmission task into manageable portions rather than retransmitting all frames simultaneously.
Solution Approach 2:
The patent applies partial action by transmitting only the necessary subset of data frames (those not yet received) instead of all data frames. This reduces the transmission load while ensuring all terminals eventually receive complete data, optimizing the balance between reliability and time efficiency.
2Reliability
If all data frames are shared and transmitted simultaneously from multiple access points, then the data transmission reliability is improved, but the processing complexity increases
Solution Approach 1:
The patent segments the processing task by separating received and unreceived data frames. Each access point independently determines which frames need retransmission based on terminal feedback, reducing the overall processing complexity while maintaining reliability through coordinated partial retransmissions.
Solution Approach 2:
The system enables self-service by allowing each access point to autonomously determine which data frames require retransmission based on terminal acknowledgment feedback. This distributed decision-making reduces central processing complexity while ensuring reliable delivery.
3Reliability
If data frames are retransmitted to ensure all terminals receive complete data, then the data completeness is improved, but the transmission time increases
Solution Approach 1:
The patent applies partial action by transmitting only the necessary subset of data frames (those not yet received) instead of all data frames. This reduces the transmission load while ensuring all terminals eventually receive complete data, optimizing the balance between reliability and time efficiency.
Solution Approach 2:
The patent implements continuous useful action through multi-frame transmission, where data frames are transmitted across multiple time slots until all terminals receive complete data. This continuous process ensures data completeness while minimizing total transmission duration by efficiently utilizing each frame opportunity.
Data Source
AI summary
According to one embodiment, a wireless communication apparatus includes transmitter circuitry, receiver circuitry and processing circuitry. The processing circuitry is configured to determine, based on a first acknowledgement frame and a second acknowledgement frame, a first data frame received by a first wireless communication apparatus and not received by a second wireless communication apparatus among data frames. The processing circuitry is configured to determine that the transmitter circuitry transmits at least one of the first data frame and a second data frame to the second wireless communication apparatus, and the first wireless communication apparatus transmits the first data frame to the second wireless communication apparatus.