Full-Duplex WLAN Acknowledgement Embedding
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Solution Overview
Problem
Full-duplex communication in WLAN networks faces challenges in smoothly transmitting acknowledgement information due to simultaneous sending and receiving, making it difficult for senders to determine if data is received correctly by the receiver.
Innovation Solution
A method and system that allow the receiver to determine and employ either a timely or delayed acknowledgement mode to send acknowledgement information, where the receiver can embed acknowledgement information within ongoing radio frames or send it after an interframe space, ensuring seamless data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver replies transmission acknowledgement information after a short interframe space (SIFS) as in related 802.11 technology, then the sender can determine whether data is received correctly, but in full-duplex communication the receiver is still sending radio frames at the same time making it impossible to reply acknowledgement information timely
Solution Approach 1:
The patent combines the acknowledgement information with the ongoing radio frame transmission by embedding the ACK/BA information within the data frame being sent. This merging allows the receiver to simultaneously transmit data and acknowledgement information, resolving the timing conflict in full-duplex communication where the receiver needs to both send data and reply acknowledgements at the same time
Solution Approach 2:
The acknowledgement information is nested within the structure of the radio frame being transmitted. Specifically, the ACK/BA information is embedded in the data portion of the ongoing frame, allowing one message (acknowledgement) to be contained within another (data transmission), thus enabling dual functionality without requiring separate transmission time
2Productivity
If the receiver embeds acknowledgement information within ongoing radio frames, then timely acknowledgement is achieved during full-duplex communication, but the acknowledgement information must be embedded in specific symbols or resources of the radio frame
Solution Approach 1:
The patent segments the radio frame into specific symbols (such as OFDM symbols) and identifies particular time-frequency resources within those symbols for carrying acknowledgement information. This segmentation allows the system to allocate specific portions of the frame structure for dual purposes (data and acknowledgement), managing the complexity through structured division rather than uniform treatment of the entire frame
Solution Approach 2:
The patent applies different functions to different parts of the radio frame structure. Specific symbols or resource elements within the frame are designated for carrying acknowledgement information, while other portions carry data. This local differentiation allows the frame to serve multiple functions simultaneously without requiring complete restructuring of the entire communication protocol
Data Source
AI summary
A method and system for sending transmission acknowledgement information are disclosed, which relate to the wireless communication field; and solves the problem that full-duplex communication cannot be performed smoothly. The method includes: when a sender completes to send a radio frame to a receiver and needs the receiver to reply transmission acknowledgement information, if the receiver is sending a radio frame to the sender, the receiver replies the transmission acknowledgement information to the sender according to a determined mode for the transmission acknowledgement information. The above technical scheme applies to the WLAN, which achieves a timely data transmission acknowledgement mechanism.