Dynamic Frequency Band Switching for Wireless Access Point Compatibility
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Solution Overview
Problem
Existing wireless communication systems, such as those using the Wi-Fi Direct standard, face challenges in dynamically switching between 2.4 GHz and 5 GHz frequency bands due to cost constraints and limitations, leading to issues where terminal devices may not connect when the access point operates at 5 GHz and the terminal only supports 2.4 GHz.
Innovation Solution
An electronic apparatus with a wireless communication unit that can perform both first and second wireless communication processes, allowing it to transmit the operation frequency band information to a terminal device and dynamically change the frequency band based on the terminal's capabilities, using a second internal access point or beacon signals conforming to Wi-Fi or Bluetooth standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the internal access point operates in the 5 GHz frequency band, then communication speed and capacity are improved, but terminal apparatuses that only support 2.4 GHz cannot connect
Solution Approach 1:
The access point dynamically switches its operation frequency band between 2.4 GHz and 5 GHz based on the capabilities of connecting terminal apparatuses. When a terminal that only supports 2.4 GHz attempts to connect, the access point switches to 2.4 GHz to enable compatibility, and can switch back to 5 GHz when only 5 GHz-capable terminals are present.
2Adaptability or versatility
If the internal access point operates in the 2.4 GHz frequency band, then compatibility with terminal apparatus is improved, but communication speed and capacity are reduced
Solution Approach 1:
The access point dynamically adjusts its operation frequency band based on real-time connection requirements. When a 2.4 GHz-only terminal needs to connect, the system switches to 2.4 GHz to ensure compatibility, sacrificing peak speed for universal access capability.
3Reliability
If the operation frequency band is fixed at 5 GHz, then communication performance is improved, but the system cannot adapt to terminal apparatuses with limited frequency band support
Solution Approach 1:
The system implements dynamic frequency band switching that allows the access point to adapt its operation frequency based on the capabilities of connecting terminals. This ensures reliable communication by matching the access point's frequency band to what the terminal apparatus supports, while maintaining the ability to switch between 2.4 GHz and 5 GHz as needed.
4Ease of manufacture
If a single Wi-Fi chip is used for cost reduction, then device cost is reduced, but the ability to simultaneously operate in multiple frequency bands is lost
Solution Approach 1:
The patent employs a single Wi-Fi chip that dynamically switches between 2.4 GHz and 5 GHz frequency bands. This approach maintains cost-effectiveness by using one chip rather than requiring dual chips for simultaneous multi-band operation, while still achieving frequency band adaptability through time-based switching controlled by the access point.
Data Source
AI summary
An electronic apparatus includes a wireless communication unit, which performs a first wireless communication process and a second wireless communication process using an internal access point that operates in a first frequency band or a second frequency band, and a processing unit. The wireless communication unit transmits information of an operation frequency band of the internal access point on connection demand with respect to the internal access point through the second wireless communication process. In a case where a demand to change the operation frequency band is received from a terminal apparatus, the processing unit performs a process of changing the operation frequency band of the internal access point.