Multi-Band WLAN Switching for Simultaneous AP and Direct Links
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Solution Overview
Problem
Electronic devices face challenges in simultaneously transmitting and receiving data with both an access point and an external device over WLAN due to channel interference, leading to deteriorated or interrupted real-time communication when channels are different.
Innovation Solution
The electronic device employs a WLAN communication circuit supporting multiple frequency bands and a processor to switch between channels based on the capability or connection information of external devices, allowing simultaneous communication with both the access point and external devices using different frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the electronic device uses the same channel for both AP communication and direct communication, then communication efficiency is improved, but the ability to maintain simultaneous communication with multiple devices is limited
Solution Approach 1:
The patent segments the communication channels by frequency band, allocating different frequency bands for AP communication and direct communication. This allows the electronic device to simultaneously maintain both communication types without interference, resolving the contradiction between communication efficiency and simultaneous communication capability.
Solution Approach 2:
The patent introduces frequency band as an additional dimension for channel differentiation. By transitioning from single-channel to multi-frequency-band communication, the system enables simultaneous AP and direct communication, effectively resolving the limitation of same-channel communication while maintaining efficiency.
2Reliability
If the electronic device alternates between WLAN communication with AP and direct communication with external device, then channel interference is avoided, but real-time communication quality deteriorates
Solution Approach 1:
The patent segments communication resources by assigning different frequency bands to different communication types. This eliminates the need for alternating communication modes, allowing simultaneous operation without channel interference while maintaining real-time communication quality through dedicated frequency resources.
Solution Approach 2:
The patent enables continuous simultaneous operation of both AP communication and direct communication through frequency band separation. This eliminates communication interruptions and alternating modes, ensuring uninterrupted real-time screen transmission and maintaining high communication quality.
3Adaptability or versatility
If the electronic device switches frequency bands for direct communication, then simultaneous communication with AP and external device is enabled, but device complexity increases
Solution Approach 1:
The patent implements dynamic frequency band selection and switching capabilities, allowing the electronic device to adaptively choose appropriate frequency bands for different communication scenarios. This dynamic approach enables simultaneous multi-device communication while managing system complexity through intelligent resource allocation.
Solution Approach 2:
The patent changes the frequency band parameter dynamically based on communication requirements. By adjusting this physical parameter, the system enables simultaneous communication with multiple devices while managing complexity through parameter-based resource differentiation rather than hardware multiplication.
Data Source
AI summary
An electronic device is provided. The electronic device includes a WLAN communication circuit supporting a plurality of frequency bands, and at least one processor. The at least one processor may be configured to perform WLAN communication with a first AP through a first channel of a first frequency band, to when an external device for performing WLAN-based direct communication is detected during the WLAN communication with the first AP, check capability of the external device and/or WLAN connection information of the external device, to switch the WLAN communication with the first AP to WLAN communication with a second AP based on a second channel of a second frequency band different from the first frequency band, based on the capability of the external device and/or the WLAN connection information of the external device, and to perform direct communication with the external device through the second channel of the second frequency band.