Multi-Link WLAN TID Mapping Using Implicit Default Link Rules
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Solution Overview
Problem
Existing wireless LAN technologies face challenges in providing high-speed services for new multimedia applications and efficiently mapping traffic identifiers (TIDs) to links in multi-link devices (MLDs) without explicit indication in the mapping process.
Innovation Solution
A method for a multi-link device (MLD) that includes a communication module and a processor to transmit request frames for configuring TID-to-link mapping, with default or previously configured mappings maintained for some TIDs and explicit mapping indicated for others, using transmission direction and response frames to manage the mapping process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If explicit TID-to-link mapping indication is implemented for all TIDs, then mapping precision is improved, but signaling overhead increases
Solution Approach 1:
The patent segments the TID-to-link mapping indication into two parts: explicitly indicated TIDs and implicitly determined TIDs. This segmentation allows the system to provide precise mapping where needed while using default implicit mapping for other TIDs, thereby reducing overall signaling overhead while maintaining necessary mapping precision.
Solution Approach 2:
The patent enables implicit determination of TID-to-link mapping through self-service mechanisms. When mapping information is not explicitly indicated, the system automatically applies default mapping rules or previously configured mappings, allowing the system to function efficiently without requiring complete explicit signaling for all TIDs.
2Adaptability or versatility
If multi-link device complexity is increased to support flexible TID-to-link mapping, then adaptability is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic TID-to-link mapping where the mapping relationship can be flexibly adjusted based on transmission direction and specific requirements. The system can switch between explicit and implicit mapping modes, and between different default mapping configurations, providing adaptability without requiring complex fixed structures.
Solution Approach 2:
The patent creates a universal mapping mechanism that handles both explicit and implicit TID-to-link mapping through a unified framework. The same system structure supports multiple mapping scenarios (explicit indication, implicit default mapping, implicit previous mapping) without requiring separate complex subsystems, thereby reducing overall device complexity.
Data Source
AI summary
Disclosed is a method by which a multi-link device (MLD) of a wireless communication system transmits a frame. The MLD transmits a request frame for mapping between a traffic identifier (TID) and a link, and the request frame can include: first mapping information for establishing a mapping relationship between one or more TIDs from among a plurality of TIDs and one or more links; and information related to the number of the one or more TIDs for which mapping with the one or more links is requested. Thereafter, the MLD can receive a response frame in response to the request frame, and first remaining TIDs that exclude the one or more TIDs from among the plurality of TIDs maintain, to be valid, a previously established mapping relationship with a link, or a default mapping relationship is applied, and, for the first remaining TIDs, a mapping relationship with a specific link may not be indicated by the first mapping information.