Wi-Fi Device Discovery via Network Connection Info
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Solution Overview
Problem
Devices connected to a wireless access point often lack a spare network interface to establish a peer-to-peer (P2P) connection, limiting their ability to discover and connect with other devices for services like file transfer or media streaming.
Innovation Solution
A method and system that allow a P2P capable device to discover and determine the network connectivity capabilities of another device, enabling it to choose the appropriate connection type (Wi-Fi Direct, Tunneled Direct Link Setup, or Access Point infrastructure link) based on available network interfaces and attributes, thereby establishing an optimal P2P network.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If devices are connected to an access point for network access, then network connectivity is ensured, but the ability to establish peer-to-peer connections is limited due to lack of spare network interfaces
Solution Approach 1:
The patent enables a single network interface to perform multiple functions by allowing it to be shared between infrastructure mode (AP connection) and peer-to-peer mode (Wi-Fi Direct connection). The wireless communication device can dynamically switch between these modes, making the network interface universal and multi-functional, thus resolving the contradiction between maintaining AP connectivity and enabling P2P connections.
2Ease of operation
If traditional Wi-Fi Direct discovery methods are used, then device discovery is possible, but connection establishment fails when devices lack spare network interfaces
Solution Approach 1:
The patent implements dynamic connection mode selection where the wireless communication device can adaptively switch between infrastructure mode and peer-to-peer mode based on real-time network conditions and interface availability. This dynamic approach ensures that device discovery through Wi-Fi Direct can proceed while connection establishment reliably succeeds by selecting the appropriate mode, thus resolving the contradiction between ease of operation and reliability.
3Adaptability or versatility
If devices use multiple network interfaces for simultaneous AP and P2P connections, then connection versatility is improved, but device complexity increases
Solution Approach 1:
The patent merges the infrastructure mode and peer-to-peer mode operations into a single network interface by implementing a virtualization layer that allows the same physical interface to be allocated to different operational modes as needed. This combining approach provides connection versatility without requiring multiple physical network interfaces, thus resolving the contradiction between adaptability and device complexity.
Data Source
AI summary
Disclosed herein are techniques to enable discovery of P2P capable devices and associated network connection information. In some embodiments, an information element is included in a transmitted request to indicate a request for network connection information from another wireless device. The device may respond with indications of the requested network connection information. Network connectivity capability determined from the network connection information may be used to decide whether to setup a Wi-Fi Direct link or a Tunneled Direct Link Setup (TDLS), or whether to use an AP infrastructure link with the other device.