Traffic Urgency Indication Frames for AP TXOP Prioritization
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Solution Overview
Problem
In wireless communication systems with multi-link devices, access points (APs) lack the necessary information to prioritize stations (STAs) with urgent traffic transmissions, leading to potential delays in delivering time-sensitive data.
Innovation Solution
Implement mechanisms for traffic urgency indication, allowing STAs to communicate their urgent data needs to APs through new request and response frames, including measurement request and response elements, enabling APs to prioritize STAs with time-sensitive traffic during TXOP sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If APs use standard scheduling without traffic urgency information, then device complexity is reduced, but time sensitivity of data transmission deteriorates
Solution Approach 1:
The STA performs preliminary action by indicating traffic urgency information in advance before actual data transmission. This allows the AP to prepare scheduling decisions proactively, reducing transmission delay for time-sensitive data without requiring complex real-time scheduling mechanisms.
Solution Approach 2:
The patent implements feedback by having the STA provide traffic urgency information to the AP, which then uses this feedback to adjust scheduling decisions. This feedback loop enables the AP to prioritize time-sensitive traffic dynamically while maintaining a relatively simple scheduling framework.
2Speed
If APs prioritize STAs with urgent traffic, then data transmission speed improves, but information processing complexity increases
Solution Approach 1:
The patent applies parameter changes by introducing traffic urgency information as an additional parameter in the scheduling decision process. The AP uses this parameter to differentiate between time-sensitive and non-time-sensitive traffic, enabling faster transmission of urgent data while keeping the overall scheduling mechanism manageable through parameter-based differentiation.
3Measurement precision
If STAs transmit traffic urgency information, then scheduling accuracy improves, but communication overhead increases
Solution Approach 1:
The patent extracts only the essential traffic urgency information from the complete data set that the STA could potentially report. By taking out only the critical urgency indicator rather than transmitting full buffer status or detailed traffic descriptions, the patent achieves improved scheduling accuracy while minimizing communication overhead.
Data Source
AI summary
Methods and apparatuses for supporting traffic urgency indication. A method for wireless communication performed by a non-access point (AP) device that comprises a first station (STA), comprises forming a link with a first AP; transmitting information associated with a traffic transmission to the first AP, the information including a scheduling parameter configured to aid the first AP in making a scheduling decision; receiving data associated with the scheduling parameter from the first AP; and based on the received data, determining to transmit the traffic transmission to the first AP.