TID-to-Link Mapping in AP MLD Beacon Frames
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Solution Overview
Problem
Current systems for TID-to-link mapping in access point multi-link devices face challenges in efficiently managing wireless links, leading to increased Beacon frame size, channel congestion, and reduced network throughput, especially in scenarios with multiple access points.
Innovation Solution
The implementation of a TID-to-link mapping method that uses a Beacon frame with a field indicating whether TIDs are mapped to wireless links, allowing for a compact representation of mapping information using bits, enabling or disabling links, and maintaining or renegotiating mappings as needed, thereby reducing the frame size and overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If detailed TID-to-link mapping information is included in Beacon frames, then mapping accuracy is improved, but frame size increases
Solution Approach 1:
The mapping information is segmented into individual bit fields, where each bit corresponds to a specific wireless link. This allows the Beacon frame to include only the necessary mapping information for each link rather than redundant data, achieving compact representation while maintaining complete mapping accuracy.
Solution Approach 2:
The patent changes the representation parameter from detailed per-link mapping tables to a compact bit-map format. Each bit in the first subfield represents whether TIDs are mapped to a corresponding wireless link, dramatically reducing the information volume while preserving the essential mapping relationships.
2Loss of information
If comprehensive mapping information is transmitted, then information completeness is improved, but channel congestion increases
Solution Approach 1:
The patent extracts only the essential mapping information needed for link management and transmits it in a condensed format. By taking out only the critical TID-to-link mapping status rather than transmitting complete mapping tables, the information completeness is maintained for essential operations while channel congestion is reduced.
3Loss of information
If detailed mapping data is included, then mapping detail is improved, but network throughput decreases
Solution Approach 1:
The mapping information is divided into manageable bit segments in the first subfield, allowing efficient encoding and transmission. This segmentation enables the network to process and update mapping information with minimal overhead, preserving detailed mapping capability while maintaining high network throughput through reduced transmission time.
4Productivity
If Beacon frame size is reduced, then transmission efficiency is improved, but information representation capability deteriorates
Solution Approach 1:
The patent fundamentally changes the information representation parameter from verbose mapping tables to a compact bit-map structure. The first subfield uses individual bits to represent TID mapping status for each wireless link, achieving both reduced frame size for improved transmission efficiency and sufficient information representation capability through the systematic bit-field design.
Data Source
AI summary
A device within an access point multi-link device (AP MLD) having a plurality of wireless links may include one or more processors configured to generate a first frame including a first subfield. The first subfield may include a plurality of bits corresponding to the plurality of wireless links. Each bit may indicate whether a plurality of traffic identifiers (TIDs) are mapped to a corresponding wireless link. The device may wirelessly transmit, through a transmitter in a wireless local area network (WLAN), the first frame.