WLAN Stream Classification Using LL IDs for Low-Latency Traffic
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Solution Overview
Problem
Existing wireless LAN systems lack effective methods for classifying low-latency traffic and providing necessary ID and QoS information for efficient stream classification services.
Innovation Solution
A method and device for classifying low-latency traffic in a wireless LAN system by exchanging low latency-related identifiers and quality of service characteristics between stations, enabling stream classification service processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing wireless LAN systems are used without low-latency traffic classification, then general traffic can be handled using standard protocols, but low-latency traffic cannot be effectively classified or prioritized
Solution Approach 1:
The patent segments traffic into different categories by introducing specific identifier fields (LL ID, SCS ID) that enable classification of low-latency traffic separately from general traffic. This segmentation allows the system to handle different traffic types with appropriate priority levels while maintaining the overall WLAN infrastructure.
Solution Approach 2:
The patent introduces intermediary elements (identifier fields, classification mechanisms) that mediate between the existing WLAN infrastructure and the requirement for low-latency traffic handling. These intermediaries enable traffic classification without fundamentally redesigning the entire system.
2Reliability
If low-latency traffic classification is implemented without standardized ID information exchange, then traffic prioritization may be achieved, but consistent identification and QoS management across multiple STAs cannot be ensured
Solution Approach 1:
The patent creates universal identifier fields (LL ID, SCS ID) that can be commonly applied across multiple STAs and different traffic types. These universal identifiers enable consistent QoS management and traffic classification throughout the WLAN system, allowing the same classification mechanism to serve multiple purposes and multiple stations.
Solution Approach 2:
The patent implements feedback mechanisms where STAs exchange information about their traffic classification requirements and QoS characteristics. This feedback loop ensures that all STAs have consistent understanding of low-latency traffic identification and can appropriately prioritize such traffic throughout the network.
3Reliability
If stream classification service process is not performed between AP and STA, then simple connection establishment is possible, but low-latency traffic classification and resource allocation cannot be negotiated
Solution Approach 1:
The patent performs preliminary actions by establishing stream classification service processes during connection setup between AP and STA. This preliminary classification negotiation ensures that low-latency traffic handling is configured before actual data transmission begins, avoiding the need for complex mid-transmission reconfiguration.
Data Source
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AI summary
A method and a device for classifying low-latency traffic in a wireless LAN system are disclosed. A method performed by a first STA in a wireless LAN system according to an embodiment of the present disclosure may comprise the steps of: receiving, from a second STA, at least one low-latency (LL)-related ID and QoS characteristic information related to LL traffic; transmitting, to the second STA, a request frame for a stream classification service (SCS) process; and receiving, from the second STA, a response frame for the request frame. Here, the at least one LL-related ID is commonly applied to one or more STAs coupled to the second STA, and at least one of the request frame and the response frame may include information related to allocation of the LL-related ID.