NFC-Assisted Wi-Fi Direct Connection Setup
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Solution Overview
Problem
The existing Wi-Fi Direct connection establishment process is complex and lengthy, and terminals cannot establish connections between groups or as clients in other groups due to protocol restrictions, limiting efficient data transfer over NFC.
Innovation Solution
A method and terminal design that uses NFC to exchange Wi-Fi Direct configuration information, implicitly including device discovery and GO negotiation, to simplify the connection process and allow connections between terminals within NFC range, regardless of group membership.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the Wi-Fi Direct protocol connection establishment procedure is used, then connection security and group management are ensured, but the connection process becomes complicated and lengthy
Solution Approach 1:
The patent applies preliminary action by pre-configuring terminals with their Wi-Fi Direct configuration information (including group information, BSSID, channel, and authentication data) before the actual connection is needed. When two terminals want to connect, they simply exchange these pre-configured information packets via NFC, eliminating the need to perform the full Wi-Fi Direct protocol handshake procedures at connection time. This resolves the contradiction by maintaining security (through proper authentication information exchange) while dramatically simplifying and shortening the connection establishment process.
2Reliability
If the Wi-Fi Direct protocol is used for connection establishment, then group owner negotiation and authentication are performed, but terminals in different groups or as clients cannot discover and connect to each other
Solution Approach 1:
The patent applies universality by designing a configuration information exchange mechanism that works across all Wi-Fi Direct scenarios - whether terminals are group owners, clients, or attempting to connect across different groups. The NFC-based information exchange bypasses the Wi-Fi Direct protocol's discovery and negotiation restrictions, allowing any terminal with the appropriate configuration information to connect to any other terminal. This resolves the contradiction by maintaining proper group management through authenticated information exchange while enabling universal connection capability between any terminals regardless of their group membership or role.
3Ease of operation
If NFC is used for direct data transmission, then simple operation and contactless exchange are achieved, but data transmission speed is too low for large files
Solution Approach 1:
The patent applies preliminary action by using NFC to exchange connection configuration information (including Wi-Fi Direct parameters, group information, and authentication data) before establishing the actual data transmission channel. The NFC interaction remains simple and contactless as intended, but it serves only to set up the connection parameters. The actual large file transmission then occurs over the separately established Wi-Fi Direct connection, which provides high-speed data transfer. This resolves the contradiction by maintaining NFC's operational simplicity for the setup phase while achieving high transmission speeds for the data phase through the Wi-Fi Direct connection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Simplifies the Wi-Fi Direct connection establishment by eliminating the need for handshake procedures and allows connections between terminals that would otherwise be restricted, enabling efficient data transfer within NFC range.
Implementation Method 1
Near field communication (NFC) is a short-range wireless communications technology. It is based on radio frequency identification (RFID) technology, and uses electromagnetic induction to implement short-range communication between electronic devices.
Data Source
AI summary
A method and a terminal for establishing a communication connection. In an embodiment, the method for establishing a communication connection includes: exchanging, by a first terminal, Wi-Fi Direct configuration information with a second terminal through a near field communication connection between the first terminal and the second terminal, where the exchanged Wi-Fi Direct configuration information includes group information of the first terminal or second terminal; and establishing a Wi-Fi Direct connection between the first terminal and the second terminal according to the exchanged Wi-Fi Direct configuration information. The present invention can simplify a process of establishing a Wi-Fi Direct connection, so that both of two terminals can establish a Wi-Fi Direct connection within an NFC communication range.