Wireless Communication Device Near-Field Mode Switching
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Solution Overview
Problem
In wireless communication systems where the communication distance is limited to a near area, such as TransferJet, users face difficulties in performing input operations while maintaining communication between devices, leading to deteriorated operability and security concerns due to the need for precise positioning of devices.
Innovation Solution
A wireless communication device capable of switching between a first communication mode with a longer distance and a second mode with a shorter distance but higher transmission rate, using a control mechanism to determine availability based on communication quality measurements and switch to the second mode for data transmission and reception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the communication distance is limited to a near area (several centimeters) to enhance security, then security is improved, but operability deteriorates because users cannot perform input operations while maintaining communication between devices
Solution Approach 1:
The system dynamically switches between two communication modes: a first mode with longer communication distance for input operations, and a second mode with shorter communication distance for secure data transmission. This dynamic adaptation allows the system to optimize both security and operability at different stages of the interaction.
Solution Approach 2:
The system performs preliminary processing (authentication, content selection, payment) in the first communication mode before switching to the second mode for actual data transmission. This preliminary action allows users to complete all input operations while maintaining adequate device distance, then switches to secure mode for the data transfer phase.
2Reliability
If the communication distance is limited to a near area to enhance security, then security is improved, but device positioning precision requirements increase
Solution Approach 1:
The system dynamically adjusts communication distance requirements based on the operational phase. During preliminary processing, the first mode allows greater distance flexibility. During data transmission, the second mode enforces stricter proximity requirements only when necessary, reducing overall positioning precision demands while maintaining security.
Solution Approach 2:
By completing all positioning and setup operations in the first communication mode before switching to the second mode, the system performs the positioning action preliminarily. This eliminates the need for continuous precise positioning during data transmission, as the devices are already in the correct relative positions.
3Ease of operation
If switching between communication modes is implemented, then both operability and security are improved, but device complexity increases
Solution Approach 1:
The wireless communication device is designed with multi-functionality, incorporating both first and second communication modes within a single device architecture. This universal design allows one device to handle both preliminary processing and secure data transmission without requiring separate specialized devices, thereby managing complexity while providing enhanced functionality.
Solution Approach 2:
The system changes communication parameters (distance, transmission rate, mode) based on the operational phase. By implementing parameter changes rather than requiring fundamentally different hardware architectures, the system achieves mode switching with minimal increase in device complexity, leveraging software-controlled parameter adjustment.
Data Source
AI summary
A near-field wireless communication circuit 10 included in a terminal 1A can perform switching between a normal mode and a near mode which has a relatively short communicable distance and a relatively high transmission rate as compared with those in the normal mode. Further, a controller 13 executes preliminary processing for starting data transmission and reception in the near mode to/from a terminal 1B serving as a communication destination between the terminals 1A and 1B by using the near-field wireless communication circuit 10 which is set to the normal mode. Further, the controller 13 determines the availability of the data transmission and reception in the near mode to/from the terminal 1B by using a measured value of communication quality which has a correlation with a communication distance to the terminal 1B as a measure of the determination. Furthermore, when it is determined that the data transmission and reception in the near node are available, the controller 13 starts the data transmission and reception to/from the terminal 1B by using the near-field wireless communication circuit 10 which is set to the near mode, based on a result of the preliminary processing executed in the normal mode in advance.