Wi-Fi Direct Channel Adaptation for Low-Latency Screen Sharing
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Solution Overview
Problem
Electronic devices experience deteriorated screen quality and latency issues during Wi-Fi Direct communication when channels for wireless connection with an AP and direct communication with an external device are different, leading to disruptions in real-time data transmission.
Innovation Solution
The electronic device adjusts variables related to direct communication, such as resolution, frame rate, video format, and audio codec, to maintain a stable and low-latency service even when channels are different.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the electronic device transmits and receives data concurrently with both the AP and external device on different channels, then the communication capability is improved, but the screen quality deteriorates and latency increases
Solution Approach 1:
The patent dynamically adjusts communication parameters (resolution, frame rate, video format, audio codec) based on channel conditions and communication state. The processor monitors the communication state and adaptively changes parameters to maintain screen quality while enabling concurrent communication on different channels.
Solution Approach 2:
The patent changes communication parameters such as resolution, frame rate, video format, and audio codec to optimize performance. By adjusting these parameters based on whether channels are identical or different, the system maintains reliable screen transmission while supporting concurrent communication capabilities.
2Adaptability or versatility
If the electronic device performs direct communication with external device through Wi-Fi Direct while maintaining wireless connection with AP, then the communication versatility is improved, but the screen transmission quality deteriorates when channels are different
Solution Approach 1:
The system dynamically switches between different communication modes and adjusts parameters based on whether the device is connected to an AP or performing direct Wi-Fi Direct communication. The processor monitors communication state and adaptively changes screen transmission parameters to maintain quality across different communication scenarios.
Solution Approach 2:
The patent applies different parameter sets for different communication modes. When connected to AP versus direct Wi-Fi Direct communication, the system adjusts resolution, frame rate, and other parameters to optimize both communication versatility and screen transmission quality for each specific mode.
3Reliability
If the electronic device uses the same channel for both AP connection and direct communication, then the screen quality is maintained, but the communication adaptability is reduced
Solution Approach 1:
The processor dynamically determines whether to use identical or different channels based on communication requirements and external device capabilities. The system can switch between same-channel mode (prioritizing screen quality) and different-channel mode (prioritizing communication adaptability) depending on the situation.
Solution Approach 2:
The patent allows parameter adjustment based on channel selection strategy. When using different channels for AP and direct communication, the system modifies communication parameters to compensate for potential interference, enabling both high screen quality and communication adaptability through parameter optimization.
Data Source
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AI summary
Various embodiments of the disclosure relate to an apparatus and method for direct communication between an electronic device and an external electronic device. The electronic device may include a wireless communication circuit and a processor operably connected to the wireless communication circuit, wherein the processor may be configured to identify a first channel for communication with an access point (AP) based on Wi-Fi and a second channel for direct communication with an external electronic device based on Wi-Fi Direct, reconfigure a capability of the electronic device related to direct communication with the external electronic device in case that the first channel and the second channel are different, and transmit information about the reconfigured capability of the electronic device to the external electronic device through the wireless communication circuit. Other embodiments may be possible.