Wireless Traffic Urgency Signaling for Multi-Link AP Scheduling
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Solution Overview
Problem
Current wireless communication systems lack the ability for non-access point multi-link devices (MLDs) to indicate traffic urgency to access points (APs), leading to inefficiencies in prioritizing urgent transmissions during multi-link operations.
Innovation Solution
Implementing a mechanism for non-AP MLDs to transmit information about traffic urgency, such as packet expiration time or enqueue time, to the AP using a new request and response framework, allowing the AP to prioritize urgent transmissions during triggered TXOP sharing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If non-AP MLDs transmit traffic urgency information to APs using existing frameworks, then transmission efficiency is improved, but the lack of urgency indication capability causes delayed prioritization of critical traffic
Solution Approach 1:
The patent applies preliminary action by having non-AP MLDs proactively indicate traffic urgency information (such as packet expiration time or enqueue time) to APs before actual transmission occurs. This allows APs to pre-prioritize urgent traffic in their scheduling decisions, ensuring critical data is transmitted without delay while maintaining efficient multi-link operations.
2Reliability
If a new request and response framework is implemented for urgency indication, then traffic prioritization is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by designing a multi-functional request and response framework that handles both standard communication tasks and traffic urgency indication. The framework reuses existing message structures and protocols where possible, allowing the same communication infrastructure to serve multiple purposes including normal data transmission, scheduling requests, and urgency indication, thereby minimizing additional complexity.
3Loss of time
If APs prioritize STAs with urgent traffic based on scheduling parameters, then timely delivery of critical data is ensured, but scheduling decision complexity increases
Solution Approach 1:
The patent applies local quality by implementing differentiated scheduling treatment based on local traffic characteristics. APs examine scheduling parameters (such as packet expiration time, enqueue time, or urgency indicators) associated with specific STAs or traffic flows and apply prioritization only to those exhibiting urgent characteristics. This allows critical data to receive immediate attention while standard traffic follows normal scheduling procedures, maintaining manageable complexity.
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.