WLAN Direct Link Setup via Beacon-Based Channel Status Determination

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing wireless local area network (WLAN) systems face challenges in determining channel status between stations for direct link setup (DLS), requiring users to manually input MAC addresses and lacking clear conditions for terminating DLS, leading to operation problems and inefficient data transmission.

Innovation Solution

A method where stations determine channel status by broadcasting and comparing beacons from access points, eliminating the need for manual MAC address input and providing a timing mechanism for effective DLS establishment and termination.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If users manually input MAC addresses to establish DLS, then DLS can be established between stations, but the operation process becomes inconvenient and complex

Engineering Contradiction:

ImproveDLS establishment reliabilityVSAvoidUser operation convenience

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The system automatically performs channel status determination and DLS establishment without requiring manual MAC address input. Stations autonomously exchange beacons, determine channel status, and complete DLS setup through automated protocols, eliminating the need for user intervention in the complex MAC address configuration process.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

Beacons serve as intermediary carriers that transmit channel status information between stations. Instead of directly exchanging MAC addresses, stations use beacons as a medium to indirectly determine channel status and establish DLS connections, simplifying the interaction process.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If DLS is established without verifying direct connection capability, then DLS setup appears feasible, but operation problems occur due to unqualified connections

Engineering Contradiction:

ImproveDLS establishment speedVSAvoidConnection quality

Core Design Contradiction:

ProductivityVSReliability

Solution Approach 1:

The system performs preliminary channel status determination through beacon exchange before finalizing DLS establishment. Stations proactively assess direct connection capability by analyzing beacon signals, ensuring connection quality is verified in advance before committing to DLS operation, preventing unqualified connections from being established.

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If stations transmit data through access points, then data transmission can occur, but data throughput decreases

Engineering Contradiction:

ImproveTransmission flexibilityVSAvoidData throughput

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The system dynamically switches between infrastructure mode (through access points) and ad-hoc mode (direct station-to-station). By implementing automated DLS establishment with channel status determination, the system can adaptively select the optimal transmission path based on real-time conditions, enabling direct high-throughput transmission when channel status is favorable while maintaining flexibility to use access points when necessary.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS8717984B2Channel status determination method and related wireless local area network system and direct link setup method

Publication Date: 2014.05.06 MEDIATEK INC

AI summary

A method for determining a channel status between a first station and a second station in a wireless local area network system includes the first station receiving a beacon from an access point. The first station broadcasts a packet carrying the beacon. The packet provides a basis for the second station to determine the channel status between the first station and the second station.