Multi-Link Wi-Fi Discovery Frame Timing for Throughput Control
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Solution Overview
Problem
The increase in communication overhead due to frequent transmission of FILS discovery frames and unsolicited probe response frames in multi-link wireless communication systems, particularly in IEEE 802.11be standard, which can lead to a reduction in communication throughput.
Innovation Solution
A communication apparatus that establishes multiple links via different channels and controls the transmission of FILS discovery frames and unsolicited probe response frames at intervals of 20 Time Units (TUs) only when not in use, thereby reducing overhead during multi-link communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If FILS discovery frames and unsolicited probe response frames are transmitted frequently to notify STAs of multi-link communication information, then STA can acquire necessary connection information, but communication overhead increases and throughput decreases
Solution Approach 1:
The patent applies dynamics by making the frame transmission interval adjustable based on communication state. The control unit dynamically changes the transmission interval from 20 TUs or less (when not in multi-link communication) to greater than 20 TUs (when multi-link communication is detected), allowing the system to adapt to different operational conditions and resolve the contradiction between reliable information notification and maintaining high throughput.
2Ease of operation
If multi-link communication information is stored in FILS discovery frames to enable efficient communication setup, then connection establishment is improved, but frame size increases causing higher communication overhead
Solution Approach 1:
The patent applies periodic action by transmitting FILS discovery frames at specific intervals rather than continuously. The control unit determines transmission timing based on whether multi-link communication is currently active, using periodic transmission only when necessary (when not in multi-link communication mode), thereby reducing overall communication overhead while maintaining connection establishment capability when needed.
Data Source
AI summary
An AP 102 performs control such that in a case where a communication is being performed using a plurality of established different links via a plurality of different channels, a FILS discovery frame and/or an unsolicited probe response frame is not transmitted at an interval of 20 or smaller TUs (Time Units), while in a case where a communication is not being performed using the plurality of links, a FILS discovery frame and/or an unsolicited probe response frame is transmitted at an interval of 20 or smaller TUs.