Wireless QoS Trigger Frames for Stream-Specific Transmission
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Solution Overview
Problem
Existing wireless networks face challenges in effectively managing quality of service (QoS) for delay-sensitive applications like augmented reality and robotics, as non-AP stations may not be aware of the AP's QoS intentions, leading to potential failure in meeting agreed-upon QoS requirements.
Innovation Solution
A trigger frame design is introduced to convey the AP's QoS intentions to non-AP stations, including information on preferred frames and stream classifications, ensuring that stations transmit frames that meet established QoS criteria.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If trigger frames are used to convey QoS intentions to non-AP stations, then QoS requirement compliance is improved, but frame transmission complexity increases
Solution Approach 1:
The trigger frame is sent in advance by the AP to inform non-AP stations of the preferred TID and stream classification before actual data transmission. This preliminary indication allows stations to prepare and transmit frames that meet QoS requirements, ensuring reliability without requiring complex real-time negotiations during data transmission.
Solution Approach 2:
The trigger frame acts as an intermediary mechanism between the AP and non-AP stations, conveying QoS intentions and preferred frame types. This intermediary communication layer simplifies the interaction by providing clear, pre-defined instructions rather than requiring complex direct negotiation between stations for each transmission.
2Loss of time
If trigger frames specify preferred frames with TID or stream classification, then latency is reduced, but information processing requirements increase
Solution Approach 1:
The trigger frame includes specific parameters such as preferred TID (Traffic Identifier) and stream classification information. By changing and specifying these parameters in advance, the system directs traffic flow efficiently, reducing latency for delay-sensitive applications without requiring complex real-time processing at the station level.
3Measurement precision
If the AP sends detailed QoS information in trigger frames, then QoS management precision is improved, but communication overhead increases
Solution Approach 1:
The patent extracts only the essential QoS information needed for frame transmission into the trigger frame, specifically the preferred TID and stream classification. By taking out only these critical parameters rather than transmitting complete QoS policy sets, the system achieves precise QoS management while minimizing communication overhead.
Data Source
AI summary
An embodiment includes an access point (AP) may transmit a trigger frame to a station (STA) to inform the STA about AP's intention to procure frames belonging to a particular stream for which a quality of service (QOS) has been setup, where the trigger frame can carry information about which stream's frames the AP intends to procure from the STA, which can help meet the QoS requirements for traffic within the wireless network, improving communication between devices within the network.