Multi-Link Station Apparatus Reception Quality Reporting
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Solution Overview
Problem
Existing wireless LAN communication systems face challenges in maintaining high-quality multi-link connections due to variations in propagation loss across frequency bands and differences in antenna configurations and transmission power, leading to potential degradation in communication performance even when one link is evaluated for quality.
Innovation Solution
A communication apparatus and method where a station apparatus reports reception quality information to an access point, allowing the access point to dynamically adjust links used for multi-link communication, ensuring that only high-quality links are utilized, and enabling adaptive changes in response to changes in the radio environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-link communication is established across multiple frequency bands, then communication capacity and coverage are improved, but communication quality deteriorates due to variations in propagation loss and transmission power across bands
Solution Approach 1:
The patent implements dynamic link quality management by continuously monitoring reception quality metrics (RSRP, RSRQ, SINR) and adapting the multi-link configuration accordingly. The system can dynamically add or remove links based on real-time radio conditions, ensuring that only high-quality links are maintained in the active set, thus resolving the contradiction between maintaining high communication capacity and ensuring reliable communication quality across varying propagation conditions.
Solution Approach 2:
The system changes operational parameters by adjusting the set of active links based on reception quality measurements. When quality degrades below thresholds, the system modifies the multi-link configuration by removing problematic links or adjusting transmission parameters, thereby maintaining communication quality while preserving capacity through the remaining high-quality links.
2Adaptability or versatility
If links are dynamically added or removed in multi-link communication, then adaptability to radio environment changes is improved, but connection establishment time and signaling overhead increase
Solution Approach 1:
The patent performs preliminary quality assessments of potential links before fully establishing them in the multi-link set. By pre-evaluating reception quality metrics and predicting future link performance based on current radio conditions, the system can prepare link configurations in advance, reducing the actual establishment time when environmental changes require link additions or removals.
Solution Approach 2:
The system implements continuous feedback mechanisms by monitoring reception quality metrics (RSRP, RSRQ, SINR) on all potential links and using this information to make informed decisions about link management. This feedback loop allows the system to adapt quickly to radio environment changes while minimizing unnecessary link establishment operations, thus balancing adaptability with time efficiency.
Data Source
AI summary
Provided is a station apparatus for wirelessly communicating with an access point apparatus through multi-link, the access point apparatus including multiple sub access point units, the station apparatus including multiple sub station units, wherein a sub station unit of the multiple sub station units includes a frame receiver configured to receive a radio frame, a measurement circuitry configured to measure reception quality of the received radio frame, and a frame transmitter configured to transmit the radio frame, and the sub station unit is configured to report information related to the reception quality to the access point apparatus.