Trigger Frame Indication Information for Flexible Station Control
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Solution Overview
Problem
In wireless local area networks, existing trigger frame structures require all stations to include both trigger information and MAC function information, leading to inefficiencies as not all stations need to respond with a corresponding MAC frame, limiting flexibility in data sending manners.
Innovation Solution
The proposed solution involves a trigger frame design that uses indication information to instruct specific stations to send MAC frames corresponding to a target MAC function, while allowing other stations to omit this response, thereby flexibly controlling whether each station performs the target MAC function based on the trigger information alone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all stations include both trigger information and MAC function information in the trigger frame, then complete information coverage is achieved, but network efficiency deteriorates due to unnecessary data transmission from stations that do not need to respond
Solution Approach 1:
The patent applies local quality by differentiating the information requirements for different stations. The indication information field selectively identifies which stations need to respond with MAC frames versus those that can send data based solely on trigger information. This resolves the contradiction by optimizing information inclusion at the station level rather than applying a uniform approach to all stations.
2Adaptability or versatility
If a uniform trigger frame structure is used for all stations, then device complexity is reduced, but adaptability deteriorates because not all stations need to respond with MAC frames
Solution Approach 1:
The patent segments the trigger frame functionality by introducing an indication information field that divides stations into two groups: those requiring MAC frame responses and those that can use trigger information alone. This segmentation allows the single trigger frame structure to adapt to different station requirements without creating multiple specialized frame types, thus improving adaptability while maintaining structural simplicity.
Solution Approach 2:
The patent introduces dynamic adaptability through the indication information field, which enables the trigger frame to flexibly control station behavior based on specific network conditions. The AP can dynamically determine which stations need MAC frame responses versus those that can use simplified data sending, allowing the system to adapt to varying operational requirements without increasing fundamental structural complexity.
Data Source
Figure 1a
Figure 1b
Figure 1c~2
AI summary
Embodiments of the present invention disclose a method and an apparatus for transmitting a trigger frame in a wireless local area network. The method for transmitting a trigger frame in a wireless local area network includes: generating, by an access point, a trigger frame carrying a target media access control MAC function, where the trigger frame includes indication information, the indication information is used to instruct a first station to send a MAC frame corresponding to the target MAC function, and the indication information is used to instruct a second station not to perform the target MAC function; and sending, by the access point, the trigger frame. In the present invention, the indication information is used to instruct the first station to send the MAC frame corresponding to the target MAC function without limiting the second station, so that data sending manners of the first station and the second station can be flexibly controlled.