NFC-Based Access Device Terminal Switching Proximity Verification
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Solution Overview
Problem
When a terminal is switched from one wireless access device to another, it may access an access device whose location is relatively remote, affecting communication performance and user experience.
Innovation Solution
Establishing a near field communication (NFC) connection between access devices to facilitate the switching process by exchanging authentication parameters and channel parameters, ensuring a seamless transition and reducing negotiation steps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal switches to another wireless access device based on conventional methods, then the switching process can be completed, but the terminal may access an access device whose location is relatively remote, affecting communication performance
Solution Approach 1:
The patent introduces NFC (Near Field Communication) as an intermediary mechanism between the first access device and the second access device. The NFC connection serves as a mediator to establish proximity verification, ensuring that the terminal switches to a nearby access device. The NFC connection acts as a trust intermediary that confirms the spatial relationship between access devices before allowing terminal switching.
Solution Approach 2:
The patent implements preliminary action by establishing the NFC connection between access devices before the terminal switching occurs. The authentication parameters are pre-shared through NFC, and the proximity is verified in advance. This preliminary verification ensures that when terminal switching happens, the target access device is guaranteed to be nearby, preventing connection to remote devices.
2Productivity
If the terminal switches between movable wireless access devices, then network service continuity can be maintained, but the switching process may involve multiple negotiation steps, reducing switching efficiency
Solution Approach 1:
The patent applies preliminary action by pre-establishing the NFC connection and sharing authentication parameters between access devices before terminal switching is needed. This advance preparation eliminates the need for time-consuming negotiations during the actual switching process. The authentication credentials are ready in advance, allowing rapid terminal handover.
Solution Approach 2:
The patent extracts the authentication and proximity verification process from the main terminal switching workflow. By separating the verification step (done via NFC between access devices) from the connection establishment step, the patent eliminates redundant negotiations. The authentication parameters are extracted and pre-shared, so the terminal switching process only needs to use the pre-validated credentials.
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
Improves communication performance and user experience by ensuring the terminal connects to a nearby access device, maintaining a short distance within the NFC range, thus enhancing the switching process efficiency.
Implementation Method 1
when a distance between a first access device and a second access device falls within a range of a near field communication NFC connection, establishing, by the first access device, an NFC connection to the second access device
Data Source
AI summary
Embodiments of the present invention relate to the wireless communications field, and provide a terminal switching method, an access device, a terminal, and a system. The method includes: establishing, by a first access device, an NFC connection to a second access device; receiving, by the first access device, an authentication parameter that is sent by the second access device by using the NFC connection; and performing access authentication on a to-be-switched terminal according to the authentication parameter, and establishing a second connection to the to-be-switched terminal after the authentication succeeds. An NFC connection is established to a second access device, an authentication parameter that is sent by the second access device by using the NFC connection is received, access authentication is performed on a to-be-switched terminal according to the authentication parameter, and a connection is established to the to-be-switched terminal after the authentication succeeds.