Wi-Fi P2P Channel Selection for Intra-Band Switching Bottlenecks
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Solution Overview
Problem
In scenarios where a first device and a second device are connected to routers on different channels in the same band, the weak channel switching capability of the group owner leads to suboptimal Wi-Fi P2P connection performance, resulting in issues such as low file transmission rates, operation freezing, severe video frame loss, or high delays.
Innovation Solution
The method involves determining the weaker switching capability between the first and second devices by analyzing their Wi-Fi module intra-band inter-channel switching capabilities and establishing the P2P connection using the STA channel of the device with the weaker switching capability, while the device with stronger capability handles channel switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the device with weaker switching capability performs intra-band inter-channel switching, then the P2P connection can be established, but the connection performance deteriorates due to frequent channel switching
Solution Approach 1:
Instead of having the device with weaker switching capability avoid channel switching (conventional approach), the patent inverts the strategy by assigning the weaker device to perform channel switching while the stronger device remains on a fixed channel. This inversion resolves the contradiction because the weaker device's frequent switching is compensated by the stronger device's stable connection, overall improving P2P connection performance.
Solution Approach 2:
The patent changes the parameter assignment by determining which device has weaker switching capability based on specific parameters (switching capability value, P2P channel working duration, STA channel working duration) and assigning channel switching responsibilities accordingly. This parameter-based differentiation allows optimal resource allocation to resolve the performance contradiction.
2Adaptability or versatility
If both devices perform channel switching to establish P2P connection, then connection flexibility is improved, but transmission stability deteriorates due to simultaneous switching operations
Solution Approach 1:
The patent segments the channel switching operation by assigning different roles to the two devices: one device performs channel switching while the other remains on a fixed channel. This segmentation prevents simultaneous switching operations that would cause transmission instability, while still allowing flexible connection establishment through the switching device's ability to adapt to different channels.
3Reliability
If the device with stronger switching capability performs channel switching, then connection stability is improved, but device complexity increases due to switching management overhead
Solution Approach 1:
The patent implements self-service by having each device automatically determine its own switching capability and autonomously decide whether to perform channel switching or remain on a fixed channel. This eliminates the need for complex centralized management of switching operations, reducing overall system complexity while maintaining connection stability through autonomous device behavior.
Data Source
AI summary
This application provides a Wi-Fi P2P connection method, an electronic device, a program product, and a readable storage medium. A first device and a second device access a network by using different channels in a same band. The first device determines a device with a weaker switching capability by using Wi-Fi module intra-band inter-channel switching capability values of the first device and the second device, and establishes a P2P connection by using a STA channel through which the device with the weaker switching capability accesses the network.