Wireless Network Discovery via Passive Listening and Traffic Analysis
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Solution Overview
Problem
Current wireless network discovery mechanisms often result in unnecessary traffic and prolonged discovery times due to the need for devices to actively send and receive discovery requests and responses, which can lead to increased power consumption and network load.
Innovation Solution
A method where a device in the discovery state listens to other devices' discovery requests and responses, comparing them to its own criteria to determine if similar information is being sought, allowing it to delay or abort its own discovery requests if sufficient information is gathered, thereby reducing unnecessary traffic and improving discovery efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices actively send and receive discovery requests and responses, then wireless network discovery can be performed, but unnecessary traffic and prolonged discovery times occur
Solution Approach 1:
The patent applies preliminary action by having devices listen to discovery requests and responses from other devices before initiating their own discovery process. By pre-monitoring the wireless environment and gathering information about available networks through overheard traffic, devices can make informed decisions about whether to proceed with active discovery, thereby reducing overall discovery time and avoiding redundant discovery attempts.
2Reliability
If devices actively send and receive discovery requests and responses, then wireless network discovery can be performed, but network load increases
Solution Approach 1:
The patent implements self-service by enabling devices to obtain network discovery information passively by listening to discovery requests and responses generated by other devices. Instead of every device independently generating discovery traffic, devices can satisfy their own information needs by monitoring and analyzing discovery traffic already present in the wireless medium, thereby reducing overall network load and traffic volume.
3Reliability
If devices actively send and receive discovery requests and responses, then wireless network discovery can be performed, but power consumption increases
Solution Approach 1:
The patent applies preliminary action by having devices perform passive listening and information gathering before initiating power-intensive active discovery transmissions. By first monitoring the wireless environment for discovery requests and responses from other devices, devices can determine whether active discovery is necessary, thereby reducing overall power consumption while maintaining reliable network discovery capability.
4Quantity of substance
If devices listen to other devices' discovery requests and responses, then unnecessary traffic is reduced, but discovery criteria comparison complexity increases
Solution Approach 1:
The patent applies the extraction principle by isolating and comparing only the essential discovery criteria elements from overheard discovery requests and responses. Instead of analyzing entire message structures, devices extract and compare specific key parameters such as network identifiers, capability indicators, and matching criteria, thereby reducing comparison complexity while effectively identifying suitable networks for connection.
Data Source
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Figure 2A~2B
AI summary
Method, apparatus, and computer program product embodiments of the invention are disclosed to improve the discovery of wireless networks. In example embodiments of the invention, a method comprises: listening by an apparatus, to wireless discovery request messages transmitted by one or more wireless devices; listening by the apparatus, to wireless discovery response messages from one or more other wireless devices; and modifying transmission by the apparatus, of one or more of its own wireless discovery request messages based on at least one of the wireless discovery request messages listened to or the wireless discovery response messages listened to.