Wireless Management Frame QoS Policy Tagging
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Solution Overview
Problem
Wireless communication systems face challenges in supporting multi-link operations due to the inability of devices to interpret whether management frames are exchanged at the link level or the multi-link device (MLD) level, leading to difficulties in managing Quality of Service (QoS) policies across different communication links.
Innovation Solution
A method and apparatus for wireless operations that transmit management frames with both MLD level and link level QoS Management Frame (QMF) Policy fields, allowing devices to identify and operate according to specific Access Categories (ACs) for each level, and maintain separate sequence number spaces and caches for duplicate detection and frame management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If management frames are transmitted without explicit level identification, then the frame structure remains simple, but wireless devices cannot interpret whether frames are exchanged at link level or MLD level
Solution Approach 1:
The patent uses a QoS Policy field acting as an identifier that 'colors' or tags management frames to indicate their level (link level or MLD level). This field allows receiving devices to immediately recognize the frame type without complex structural analysis, resolving the contradiction between simple structure and easy interpretation.
2Measurement precision
If separate QoS policies are maintained for MLD level and link level, then QoS management precision is improved, but device complexity increases
Solution Approach 1:
The patent segments QoS policy management into two distinct components: MLD level QoS policy and link level QoS policy. Each level has its own policy parameters and management mechanisms, allowing precise control at each level while keeping the complexity manageable through clear separation of concerns.
Solution Approach 2:
Different QoS policies are applied locally to different levels of the multi-link system. The MLD level policy governs overall resource allocation across all links, while link level policies handle specific link characteristics, allowing optimized QoS management without requiring a single complex unified policy.
3Device complexity
If sequence number spaces are shared between MLD level and link level QMF frames, then device complexity is reduced, but reliability of duplicate detection deteriorates
Solution Approach 1:
The patent divides the sequence number space into separate segments: one for MLD level QMF frames and another for link level QMF frames. This segmentation ensures that sequence numbers from different levels do not conflict, maintaining reliable duplicate detection while keeping each segment's management relatively simple.
Data Source
AI summary
Embodiments of a method and an apparatus for wireless operations are disclosed. In an embodiment, a method for wireless operations involves a first wireless device transmitting to a second wireless device, a management frame having a multi-link device (MLD) level Quality of Service Management Frame (QMF) Policy field that identifies an MLD level QMF Policy and a link level QMF Policy field that identifies a link level QMF Policy for a corresponding link, where the MLD level QMF Policy indicates an Access Category (AC) for each MLD level QMF management frame and each link level QMF Policy field indicates the AC for each link level QMF management frame, receiving, at the second wireless device, the management frame with the MLD level QMF Policy field and link level QMF Policy field for each corresponding link, and operating the second wireless device according to the AC indicated by the first wireless device.