RF Payment Event Suspension in Wireless Terminals
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Solution Overview
Problem
Mobile commerce transactions using Radio Frequency (RF) methods lack a mechanism to suspend events and secure integrity, as they do not employ an open or close function to recognize the start and end of transactions, unlike Infrared Data Association (IrDA) methods.
Innovation Solution
A wireless communication terminal with a controller that analyzes response messages to determine the payment method, authenticates RF transactions, and uses a timer to suspend events during RF payments, ensuring integrity by recognizing the RF method and managing the authenticator's state through 'IC close' and 'IC open' functions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If RF payment method is used for mobile commerce, then transaction speed and convenience are improved, but transaction integrity and security deteriorate due to lack of event suspension mechanism
Solution Approach 1:
The system performs preliminary actions by setting a suspension flag and starting a timer before the RF payment transaction begins. This preliminary setup ensures that when the transaction is in progress, any incoming events can be automatically suspended, thus maintaining transaction integrity while preserving the speed advantage of RF payment.
Solution Approach 2:
The system implements a feedback mechanism through the timer that continuously monitors the transaction status. When the timer detects that the transaction is still in progress (within the predetermined time window), it maintains the suspension flag to prevent events from interrupting the transaction, thereby ensuring reliability without compromising the rapid execution of RF payments.
2Reliability
If event suspension mechanism is added to RF payment, then transaction integrity is improved, but device complexity increases
Solution Approach 1:
The event suspension mechanism is segmented into distinct functional components: a suspension flag indicator and a timer unit. This segmentation allows each component to perform a specific function independently, making the overall system easier to implement and maintain while ensuring transaction integrity through coordinated operation of these simple elements.
Solution Approach 2:
The timer unit operates autonomously to detect whether the transaction is complete within the predetermined time period. This self-service capability eliminates the need for complex external monitoring systems, as the timer automatically manages the suspension flag based on transaction duration, thereby improving reliability without proportionally increasing device complexity.
3Measurement precision
If timer and flag mechanism is implemented, then event suspension accuracy is improved, but use of energy increases
Solution Approach 1:
The timer operates using periodic action by checking the transaction status at regular intervals within the predetermined time period. This periodic monitoring provides accurate event suspension control without requiring continuous power consumption, as the timer only activates when needed to verify transaction completion, thus balancing measurement precision with energy efficiency.
Data Source
AI summary
Provided is a wireless communication terminal for mobile commerce that can suspend events during Radio Frequency (RF) payment, and a method thereof. The terminal for mobile commerce can secure integrity of the mobile commerce by suspending events generated during the RF payment of a mobile commerce. The terminal includes: a storage for storing a pre-established authentication number; a keypad for receiving a mobile commerce request and an authentication number; a controller for requesting authentication for the mobile commerce to an authenticator in response to the mobile commerce request, analyzing an authentication response message from the authenticator; and the authenticator for authenticating the mobile commerce; an RF antenna for transmitting/receiving an RF signal for a function of the mobile commerce under the control of the controller; and a display for displaying the mobile commerce process.