Selective Probe Response Filtering for WLAN Traffic Reduction
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Solution Overview
Problem
In WLAN systems, the increasing number of devices within a specific area leads to reduced resource availability and increased interference due to excessive control messages, particularly from probe request and response signals.
Innovation Solution
A method and apparatus for selectively transmitting probe response messages based on information included in the probe request message or internal device information, allowing devices to determine whether to respond to probe requests based on factors like address, type, authentication, and service quality, thereby reducing unnecessary responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all devices transmit probe response messages in response to probe requests, then complete network discovery is achieved, but network traffic increases rapidly and resource availability is reduced
Solution Approach 1:
The patent extracts and removes unnecessary probe response messages from the network communication. Devices selectively filter out probe requests for which they should not respond based on their device type, service capabilities, and current state, thereby extracting only the essential responses needed for network discovery while eliminating redundant traffic.
Solution Approach 2:
The patent changes the response behavior parameter from a binary state (always respond or never respond) to a conditional state based on multiple parameters including device type, service capability matching, and operational state. This allows devices to dynamically adjust their probe response behavior to optimize network traffic while maintaining discovery effectiveness.
2Reliability
If all devices transmit probe response messages, then network discovery is comprehensive, but interference between devices increases
Solution Approach 1:
The patent extracts and eliminates unnecessary probe response transmissions that contribute to interference. By filtering responses based on device-specific criteria, the system removes redundant signals from the network environment, thereby reducing overall interference while preserving essential discovery communications.
3Productivity
If devices selectively transmit probe response messages based on information in probe request messages, then resource efficiency is improved and interference is reduced, but device complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring devices with their own device type information, service capabilities, and response criteria before probe request transmission occurs. This allows devices to make rapid selective response decisions without complex real-time analysis, as the filtering logic is prepared in advance based on device identity and capabilities.
4Quantity of substance
If devices selectively transmit probe response messages, then unnecessary transmissions are reduced, but the complexity of determining response eligibility increases
Solution Approach 1:
The patent simplifies the determination process by performing preliminary configuration of response eligibility criteria. Devices pre-store their device types, service capabilities, and matching rules, enabling them to quickly determine response eligibility through simple comparison operations rather than complex real-time analysis.
Data Source
AI summary
The present invention relates to a method for establishing a wireless LAN (WLAN) communication connection and an electronic device therefore. The method for establishing a WLAN communication connection in a device may comprise the steps of: receiving a probe request message from another device; and selectively transmitting a response signal in response to the probe request on the basis of at least one of information included in the received probe request message and internal information of the device.