Wi-Fi Direct Device Discovery Using Location Filtering
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Solution Overview
Problem
Current Wi-Fi Peer to Peer (P2P) communication lacks efficient methods for device discovery based on location information, leading to unnecessary device detection, privacy breaches, and increased power consumption, especially when connecting devices across different access points within the same region.
Innovation Solution
A method and apparatus for Wi-Fi Direct connections that utilize location information, created from Service Set Identifier (SSID) and gateway-provided common ID information, to selectively discover and connect devices within the same region, excluding those outside the user-configured area, thereby enhancing privacy and reducing unnecessary device detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If device discovery is performed without location information filtering, then all devices within transmission range can be detected, but unnecessary device detection occurs and privacy is breached
Solution Approach 1:
The patent applies preliminary action by pre-configuring location information (such as geographic coordinates or area identifiers) in each device before the device discovery process begins. During probe signal exchange, devices compare their pre-stored location information to determine whether to proceed with connection, thereby filtering out devices outside the intended area before actual connection attempts occur.
Solution Approach 2:
The patent introduces location information as an intermediary filtering mechanism between the probe signal transmission and the actual device connection. This intermediary layer (location comparison) acts as a gatekeeper that determines whether devices should be connected based on their geographic or area-based location data, preventing direct connection attempts with unauthorized devices.
2Productivity
If device discovery is performed without location information filtering, then all devices within transmission range can be detected, but power consumption increases
Solution Approach 1:
The patent extracts and utilizes location information from probe signals to identify and exclude devices that are geographically outside the desired connection area. By extracting this location data and comparing it against pre-configured location information, the system avoids unnecessary connection establishment processes with distant devices, thereby reducing power consumption while maintaining efficient discovery of relevant devices.
3Speed
If location information is used for device discovery, then connection speed is improved by filtering devices, but device complexity increases
Solution Approach 1:
The patent implements partial action by performing location information comparison only on essential fields within probe signals, rather than analyzing all possible device parameters. This selective approach extracts and compares only the necessary location data (such as area identifiers or coordinates) to make quick connection decisions, thereby improving connection speed without requiring complex full-device analysis.
Data Source
AI summary
A Wireless Fidelity (Wi-Fi) Direct connection method for a User Equipment (UE) is provided. The method includes receiving a probe signal from at least one device; comparing location information in the probe signal with location information of the UE; and performing the Wi-Fi Direct connection for the at least one device transmitting the probe signal including location information that is the same as that of the UE. In addition, a method of supporting a Wi-Fi Direct connection for a wireless Access Point (AP) is provided. The method includes receiving common location information from at least one gateway; and transmitting unique identification information of the wireless AP and the common location information to at least one Wi-Fi Direct support device, wherein the unique identification information and the common location information are used to create location information, which is included in a probe signal, in the Wi-Fi Direct support device.