Wireless Direct Mode Frequency Matching for Connection Reliability
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Solution Overview
Problem
The existing handover connection methods for mobile terminals and printing apparatuses fail to establish a wireless LAN connection when their operating frequencies do not match, such as between IEEE 802.11n and IEEE 802.11ac standards, leading to connection errors even with NFC or Bluetooth Low Energy communication.
Innovation Solution
An information processing apparatus that acquires wireless connection start requests and information, and controls the wireless connection by matching the external apparatus's communication information to initiate a connection using NFC or Bluetooth Low Energy, allowing the printing apparatus to start the wireless direct mode at an operating frequency that matches the mobile terminal's frequency, thereby preventing connection errors due to frequency mismatches.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the printing apparatus activates wireless direct mode at a fixed frequency (e.g., 5 GHz in IEEE 802.11ac), then the apparatus can operate at higher speeds, but connection fails when the mobile terminal operates at a different frequency (e.g., 2.4 GHz in IEEE 802.11n)
Solution Approach 1:
The printing apparatus dynamically changes its operating frequency based on the mobile terminal's frequency. The control unit receives frequency information from the mobile terminal via NFC or Bluetooth Low Energy, then activates the wireless direct mode at the matched frequency, making the system adaptive rather than fixed.
Solution Approach 2:
The operating frequency parameter is changed from a fixed value to a variable that matches the mobile terminal's frequency. The control unit acquires the terminal's frequency information and adjusts the printing apparatus's frequency parameter accordingly to ensure compatibility.
2Adaptability or versatility
If the printing apparatus supports multiple wireless LAN standards (IEEE 802.11a/b/g/n/ac), then versatility is improved, but connection errors occur when frequency bands do not match between devices
Solution Approach 1:
Instead of attempting all wireless standards simultaneously, the system dynamically selects and activates only the appropriate frequency band that matches the mobile terminal. This reduces conflicts while maintaining support for multiple standards through selective activation.
Solution Approach 2:
The system performs preliminary frequency matching through NFC or Bluetooth Low Energy communication before activating the wireless direct mode. This preliminary action ensures that the correct frequency is selected in advance, preventing connection errors.
3Productivity
If the printing apparatus activates wireless direct mode without frequency matching, then connection speed is improved, but unnecessary mode activations occur leading to connection failures
Solution Approach 1:
Frequency information is exchanged through NFC or Bluetooth Low Energy before the wireless direct mode is activated. This preliminary frequency matching prevents unnecessary mode activations and ensures connection success while maintaining quick setup.
Data Source
AI summary
An information processing apparatus that wirelessly communicates with an external apparatus includes an acquisition unit that acquires a wireless connection start request and wireless communication information about the external apparatus, and a control unit that starts a wireless connection with the external apparatus based on the external apparatus' wireless communication information in a case where the wireless communication information about the external apparatus matches wireless communication information about the information processing apparatus.