Simultaneous Legacy Wi-Fi and P2P Operation
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Solution Overview
Problem
The performance of legacy Wi-Fi is degraded when the Wi-Fi P2P function is executed while the device is in legacy Wi-Fi station mode, due to the need to switch channels for device discovery and listen states, leading to increased power consumption and bandwidth limitations.
Innovation Solution
Enabling Autonomous GO mode on the same channel as the legacy Wi-Fi station mode to acquire Group Owner rights, allowing the P2P device to perform listen and search states over the same channel, thereby maintaining legacy Wi-Fi performance during Wi-Fi P2P function usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If Wi-Fi P2P function is executed while in legacy Wi-Fi station mode, then direct device communication capability is improved, but legacy Wi-Fi performance is degraded
Solution Approach 1:
The patent segments the Wi-Fi interface into two independent virtual interfaces: a legacy Wi-Fi station interface and a Wi-Fi P2P interface. Each interface operates independently on its own channel, allowing simultaneous legacy Wi-Fi connectivity and P2P device discovery without interference. The P2P interface can acquire Group Owner rights and perform listen/search states on social channels while the legacy interface maintains stable connection on its assigned channel.
Solution Approach 2:
The patent introduces a new dimension of operation by enabling the P2P interface to operate on social channels (1, 6, 11) independent from the legacy Wi-Fi channel. This dimensional separation allows the device to perform P2P device discovery on social channels while maintaining legacy Wi-Fi connection on a different channel, effectively resolving the channel conflict and performance degradation issue.
2Adaptability or versatility
If channel switching is performed for device discovery, then Wi-Fi P2P functionality is enabled, but power consumption increases and legacy Wi-Fi connection is disrupted
Solution Approach 1:
The patent segments channel usage by assigning dedicated social channels (1, 6, 11) for P2P operations and keeping the legacy Wi-Fi channel separate. The P2P interface performs listen and search states only on social channels, avoiding frequent switching of the legacy Wi-Fi channel. This segmented approach reduces overall channel switching frequency and associated power consumption.
Solution Approach 2:
The patent implements periodic listen and search states for the P2P interface on social channels rather than continuous operation. The device alternates between active scanning and sleep states, performing device discovery at periodic intervals. This periodic action significantly reduces power consumption compared to continuous channel monitoring while still maintaining P2P functionality.
Data Source
AI summary
A method for using legacy Wi-Fi and Wi-Fi Peer-to-Peer (P2P) simultaneously is provided. The method includes entering a device discovery process of Wi-Fi P2P, if use of a Wi-Fi P2P function is requested while using a legacy Wi-Fi function, acquiring a Group Owner (GO) right of Wi-Fi P2P in the device discovery process, performing a listen state over the same channel as a channel where the legacy Wi-Fi function is in use, through the acquisition of the GO right, and performing a search state over a social channel of Wi-Fi P2P, and repeating the listen state and the search state until the device discovery process is ended.