Wireless Link Availability Signaling for Faster EMLSR Access

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In EMLSR communication, when a communication terminal cannot detect a control frame in any pre-configure link, it is difficult to specify a single radio link for subsequent operations, leading to access control delays and inefficient data transmission.

Innovation Solution

A wireless communication control device that includes a communication control unit to receive and transmit information indicating available links, allowing the device to specify a link for subsequent communication based on the received information.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If EMLSR STA waits for control frame in all pre-configure links, then link selection reliability is improved, but access control delay increases

Engineering Contradiction:

Improvelink selection reliabilityVSAvoidaccess control delay

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The AP performs preliminary detection of link availability and pre-determines the next single radio link before the EMLSR STA needs to select a link. The determination result is then transmitted to the STA, allowing the STA to immediately switch to the predetermined link without performing its own detection or waiting across multiple links, thus resolving the contradiction between reliable link selection and access delay

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The AP acts as an intermediary that centralizes the link availability detection function. Instead of the EMLSR STA independently detecting link status across multiple links (which causes delay), the AP detects link status and communicates the determination result to the STA, enabling the STA to quickly switch to the recommended link with minimal delay while maintaining reliability

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If EMLSR STA detects control frame in all links, then communication reliability is improved, but information exchange overhead increases

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidinformation exchange overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The link detection function is extracted from the EMLSR STA and centralized in the AP. The AP alone performs detection of link availability across multiple links and communicates only the determination result to the STA. This eliminates redundant detection operations at the STA side and reduces information exchange overhead while maintaining communication reliability through the AP's centralized control

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The AP performs multiple functions: it acts as both the control frame transmitter and the link availability detector. By consolidating these functions in one device, the system eliminates the need for the STA to independently detect link status across multiple links, thereby reducing information exchange overhead while maintaining reliable communication through the AP's unified control

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentEP4727046A2Wireless communication control device and method, and program

Publication Date: 2026.04.15 SONY GROUP CORP

Figure 1
Figure 2
Figure 3

AI summary

A wireless communication control device performs control to receive first information from a wireless communication device via one link of a plurality of links preset with the wireless communication device, and to transmit second information indicating an available link of the plurality of links.