UWB Positioning Method Switching for Payment Terminal Interference
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Solution Overview
Problem
In fare payment systems using UWB or BLE, ensuring simultaneous connection of multiple mobile terminals to ticket gates while avoiding electromagnetic interference and ensuring secure and efficient communication is challenging, especially in high-traffic scenarios where UWB communication requirements for distance measurement and data communication overlap, leading to difficulties in maintaining reliable connections.
Innovation Solution
An information processing system that switches positioning methods for mobile terminals between wide and narrow ranging zones, using Downlink and Uplink TDoA methods, and performs data communication via BLE or UWB in-band communication to manage interference and ensure reliable payment processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If UWB communication is used for distance measurement in a wide area, then positioning coverage is improved, but communication amount and interference increase
Solution Approach 1:
The patent divides the positioning area into multiple ranging zones (first ranging zone, second ranging zone, third ranging zone) based on distance from the payment terminal. Different positioning methods are applied to different zones: Downlink TDoA for wide-area positioning and Uplink TDoA for narrow-area positioning. This segmentation allows the system to use more efficient communication methods in appropriate zones, reducing overall communication amount while maintaining comprehensive coverage.
Solution Approach 2:
The patent dynamically switches positioning methods based on the mobile terminal's location within different ranging zones. The system transitions from Downlink TDoA in wider zones to Uplink TDoA in narrower zones, adapting the positioning approach to the current operational context. This dynamic adjustment optimizes communication efficiency while maintaining positioning accuracy across varying distances.
2Adaptability or versatility
If UWB communication is used for both distance measurement and data communication, then functionality is integrated, but interference between communication types increases
Solution Approach 1:
The patent segments the communication process into distinct phases: positioning phase (using Downlink TDoA or Uplink TDoA) and data communication phase (using BLE or UWB in-band communication). By separating these functions temporally and spatially through ranging zone definitions, the system reduces interference between positioning signals and data communication signals while maintaining integrated functionality.
Solution Approach 2:
The patent uses BLE (Bluetooth Low Energy) as an intermediary communication method for data transmission, especially in certain ranging zones. This intermediary approach allows data communication to occur through a different communication pathway than UWB positioning signals, reducing direct electromagnetic interference while still achieving the overall communication objective.
3Ease of operation
If OOB communication is used for connection before UWB communication, then connection preparation is improved, but connection time may be insufficient in high-traffic scenarios
Solution Approach 1:
The patent performs preliminary actions by establishing BLE connections before UWB communication begins. Mobile terminals and payment terminals exchange connection information and authentication data through BLE in advance, preparing the communication pathway before the actual UWB data transmission starts. This preliminary preparation reduces the time required for full connection establishment during high-traffic periods.
4Productivity
If multiple mobile terminals connect simultaneously to ticket gates, then system capacity is improved, but interference between terminals increases
Solution Approach 1:
The patent segments the service area into multiple ranging zones with distinct positioning methods. By organizing terminals and payment terminals into spatial zones and assigning specific communication methods to each zone, the system reduces cross-zone interference while maintaining the ability to serve multiple terminals simultaneously. This spatial segmentation allows parallel processing of multiple connections with reduced mutual interference.
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
This approach enables reliable and efficient payment processing by minimizing interference and ensuring secure connections, even in high-traffic environments, by dynamically adjusting positioning methods and communication protocols based on the terminal's location within specific ranging zones.
Implementation Method 1
a positioning processing unit that performs positioning by switching a positioning method for measuring a position of the mobile terminal for each of a plurality of ranging zones from a wide area to a narrow area set according to a distance from the payment terminal
Implementation Method 2
a payment processing unit that performs data communication for executing payment processing with a mobile terminal
Data Source
AI summary
The present disclosure relates to an information processing system, an information processing terminal, and an information processing method that enable payment processing to be performed more reliably.An information processing system includes: a payment processing unit that performs data communication for executing payment processing with an information processing terminal; and a positioning processing unit that performs positioning by switching a positioning method for measuring a position of the information processing terminal for each of a plurality of ranging zones from a wide area to a narrow area set according to a distance from the payment processing unit. The present technology can be applied to, for example, a payment processing system capable of performing payment in a touchless manner.