Wideband WLAN Acknowledgment Channel Selection via RU Allocation
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Solution Overview
Problem
In current wireless local area network (WLAN) systems, stations struggle to determine the specific channel for sending acknowledgment frames due to the expansion of bandwidths, leading to inefficiencies in information transmission.
Innovation Solution
The receiving device determines a response resource block for acknowledgment frames based on the transmission resource block and RU allocation information, using a preset rule to identify the appropriate channel, ensuring accurate transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If bandwidth of available channels is expanded, then data transmission capacity is improved, but stations cannot determine specific channel for acknowledgment frames
Solution Approach 1:
The access point performs preliminary action by notifying stations in advance of the resource unit allocation for acknowledgment frames through the data frame transmission. This allows stations to determine the specific channel before needing to send acknowledgments, resolving the channel determination problem in expanded bandwidth scenarios
Solution Approach 2:
The resource unit allocation information acts as an intermediary between the access point's channel assignment and the station's acknowledgment transmission. This intermediary mechanism enables stations to translate general bandwidth allocation into specific channel identification for sending acknowledgments
2Productivity
If resource unit allocation is used for acknowledgment frames, then resource utilization is improved, but receiving devices cannot correctly identify response channel
Solution Approach 1:
The access point performs preliminary action by notifying stations in advance of the resource unit allocation for acknowledgment frames through the data frame transmission. This allows stations to determine the specific channel before needing to send acknowledgments, resolving the channel determination problem in expanded bandwidth scenarios
Solution Approach 2:
The system implements feedback by having the access point notify stations of the resource unit allocation in the data frame, and then stations send acknowledgments on the notified resource units. This closed-loop feedback ensures correct channel identification and maintains resource utilization efficiency
Data Source
AI summary
In an information transmission method, a sending device sends a data frame to a receiving device. The data frame occupies a transmission resource block, a bandwidth occupied by the transmission resource block is greater than 160 MHz, and the data frame comprises resource unit (RU) allocation information. The sending device determines indication information based on a resource block size indicated by the RU allocation information and a location of a 160 MHz channel within the bandwidth occupied by the transmission resource block, with the 160 MHz channel having more data tones in the transmission resource block. The sending device determines a response resource block based on the indication information and the RU allocation information, and then receives an acknowledgment frame for the data frame from the receiving device on the response resource block.