IP-Based Device Discovery for TDLS Channel Setup

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing electronic device searching methods for establishing a Tunneled Direct Link Setup (TDLS) channel rely on layer 2 (L2) frame encapsulation and parsing, requiring hardware chip updates when peripherals change, which is inefficient and inconvenient.

Innovation Solution

Implementing a method where a first electronic device transmits a discovery request message using an IP address and receives a response from a second electronic device, establishing a TDLS channel based on the IP address, eliminating the need for L2 frame encapsulation and parsing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If L2 frame encapsulation and parsing is used for device searching, then device connection can be established, but hardware chip updates are required when peripherals change

Engineering Contradiction:

Improvedevice connection reliabilityVSAvoidadaptability to peripheral changes

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent replaces the mechanical/L2 frame-based encapsulation and parsing system with an IP address-based discovery message system. Instead of using complex L2 frame structures that require hardware chip updates, the invention uses simple IP address communication that can be implemented through software, thereby eliminating the need for hardware updates when peripherals change.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Reliability

If L2 frame encapsulation is used for device searching, then device connection can be established, but Wi-Fi driver changes are required to support Miracast

Engineering Contradiction:

Improvedevice connection reliabilityVSAvoiddriver complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent substitutes the complex L2 frame encapsulation mechanism with a simpler IP address-based discovery message approach. This replacement eliminates the need for Wi-Fi driver modifications to support Miracast, as the IP-based system can operate independently of driver-level L2 frame handling.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

3Ease of operation

If IP address-based discovery message is used, then device searching is simplified and hardware updates are avoided, but connection establishment must be ensured

Engineering Contradiction:

Improvedevice searching easeVSAvoidconnection establishment reliability

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The patent introduces an intermediary mechanism where the IP address serves as a mediator between the discovery message transmission and the TDLS channel establishment. The IP address enables simplified device discovery while the intermediary TDLS protocol ensures reliable connection establishment, combining the benefits of simplicity and reliability.

Inventive Principle:

Principle #24Intermediary (Mediator)

4Productivity

If traditional L2 frame method is used, then device searching can be performed, but power efficiency is reduced due to complex processing

Engineering Contradiction:

Improvedevice searching speedVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent replaces the power-intensive L2 frame encapsulation and parsing operations with a more efficient IP address-based discovery message system. This substitution reduces computational complexity and processing requirements, thereby improving power efficiency while maintaining device searching functionality.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Data Source

PatentUS10225791B2Device searching method and electronic device for supporting the same

Publication Date: 2019.03.05 SAMSUNG ELECTRONICS CO LTD

AI summary

A method comprising: transmitting, by a first electronic device, a discovery request message according to an internet protocol (IP) address of the first electronic device; receiving, by the first electronic device, a response to the discovery request message that is transmitted by a second electronic device according to an IP address of the second electronic device; and establishing a Tunneled Direct Link Setup (TDLS) channel with the second electronic device when the response to the discovery request message is received from the second electronic device.