Wireless QoS Profile Switching for Dynamic Traffic Flows
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Solution Overview
Problem
Current wireless networks lack mechanisms for dynamically changing quality of service (QoS) flows to accommodate unpredictable changes in traffic patterns, particularly for latency-sensitive applications like augmented reality and robotics, leading to disruptions.
Innovation Solution
Implement a Dynamic Stream Classification Service (D-SCS) protocol that allows non-AP stations to dynamically change QoS profiles with access points, enabling fast adjustments to QoS characteristics based on changing traffic demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional QoS mechanisms are used in wireless networks, then network stability is maintained, but the system cannot adapt to unpredictable changes in traffic patterns for latency-sensitive applications
Solution Approach 1:
The patent implements dynamic QoS profile switching that allows the wireless network to transition between different QoS configurations based on real-time traffic conditions. The system enables latency-sensitive applications to dynamically change their QoS parameters (such as transmission power, modulation schemes, and resource allocation) without requiring full reconnection, thus adapting to unpredictable traffic patterns while maintaining network stability through controlled transition mechanisms.
Solution Approach 2:
The patent changes key QoS parameters dynamically by introducing a mechanism that allows stations to request and switch between multiple pre-configured QoS profiles. Each profile contains different parameter sets (data rates, latency thresholds, bandwidth allocations) that can be activated based on application requirements, enabling the system to adapt QoS characteristics without fundamental architectural changes.
2Loss of time
If QoS profiles are changed dynamically for latency-sensitive applications, then latency is reduced and throughput is improved, but the complexity of QoS management increases
Solution Approach 1:
The patent reduces management complexity by pre-configuring multiple QoS profiles with optimized parameter sets before runtime. Instead of dynamically calculating and negotiating QoS parameters in real-time, the system prepares several ready-to-activate profiles during initialization, allowing fast switching without complex real-time computations. This preliminary preparation significantly reduces latency while keeping the switching logic relatively simple.
Solution Approach 2:
The patent implements a feedback mechanism where the receiving station responds to QoS change requests with acceptance or rejection notifications. This structured feedback loop provides clear state transitions and error handling, making the dynamic QoS management process more predictable and easier to manage despite the increased flexibility. The feedback mechanism ensures that both ends of the communication agree on the active QoS profile, reducing management overhead through explicit state confirmation.
Data Source
AI summary
An access point (AP) for facilitating communication in a wireless network. The AP has a memory and a processor. The AP receives, from a station (STA), a request frame requesting dynamic stream classification service. The request frame includes a plurality of quality of service (QoS) profiles. Each QoS profile is associated with a respective QoS characteristics element indicating QoS expectation of traffic flow. The AP transmits, to the STA, a response frame accepting the request. The AP transmits, to the STA, one or more frames based on a first QoS profile among the plurality of QOS profiles. The AP receives, from the STA, a frame indicating a switch to a second QoS profile among the plurality of QoS profiles. The AP transmits, to the STA, one or more frames based on the second QoS profile in response to the frame indicating a switch to the second QoS profile.