Direct Wireless Connection Switching for Peer Discovery Failover
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Solution Overview
Problem
Existing communication apparatuses face challenges in establishing appropriate direct communication connections, particularly when using multiple connection methods like Wi-Fi Aware and Wi-Fi Direct, leading to inefficiencies and potential failures in discovering peer devices.
Innovation Solution
A communication apparatus equipped with a wireless direct function that includes multiple execution units to switch between different connection processes, allowing for peer device search using a first method if a predefined duration fails, ensuring seamless communication establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a communication apparatus uses multiple connection methods (Wi-Fi Aware and Wi-Fi Direct) for direct communication, then the adaptability and versatility of the communication system is improved, but the device complexity and difficulty of establishing appropriate connections increases
Solution Approach 1:
The patent implements dynamic switching between Wi-Fi Aware and Wi-Fi Direct connection methods based on real-time peer device discovery results. The communication apparatus automatically transitions from one connection method to another depending on whether a peer device is successfully discovered, making the connection establishment process adaptive and flexible rather than static and rigid.
Solution Approach 2:
The patent changes the connection method parameter from a fixed state to a variable state that can switch between Wi-Fi Aware and Wi-Fi Direct. By modifying the connection method based on discovery outcomes and timing conditions, the system optimizes connection establishment while maintaining compatibility with multiple communication standards.
2Adaptability or versatility
If a communication apparatus performs peer device search using Wi-Fi Aware method, then the adaptability is improved, but the reliability of connection establishment deteriorates when peer device is not discovered within predefined duration
Solution Approach 1:
The patent prepares a fallback connection method (Wi-Fi Direct) in advance before the Wi-Fi Aware discovery process fails. When the peer device is not discovered within the predefined duration using Wi-Fi Aware, the system automatically switches to the pre-prepared Wi-Fi Direct method, cushioning against the failure of the primary discovery method and ensuring connection establishment can proceed through alternative means.
Solution Approach 2:
The patent introduces a control unit as an intermediary that manages the transition between Wi-Fi Aware and Wi-Fi Direct connection methods. This control unit monitors the peer device discovery process and mediates the switching decision, coordinating between the two connection methods to ensure seamless transition and maintain connection establishment reliability.
3Reliability
If a communication apparatus switches connection methods based on peer device discovery results, then the reliability of connection establishment is improved, but the loss of time for connection setup increases
Solution Approach 1:
The patent performs a limited-duration peer device search using Wi-Fi Aware method for a predefined duration before switching to Wi-Fi Direct. This partial action approach avoids excessive time investment in a single discovery method that may not be working, while still attempting to utilize the more adaptable Wi-Fi Aware method when conditions are favorable.
Solution Approach 2:
The patent performs preliminary peer device discovery using Wi-Fi Aware method before committing to a connection method. By conducting this preliminary search within a predefined duration and evaluating the results, the system makes an informed decision about whether to proceed with Wi-Fi Aware or switch to Wi-Fi Direct, avoiding unnecessary time loss from prolonged unsuccessful searches.
Data Source
AI summary
A communication apparatus including a wireless direct function to perform direct wireless communication with a peer device without an external access point includes at least one memory and at least one processor which function as a first execution unit configured to operate the wireless direct function of a first method, a second execution unit configured to operate the wireless direct function of a second method including a connection process different from a connection process of the wireless direct function of the first method, and a control unit configured to switch to a peer device search using the wireless direct function of the first method in a case where a peer device search using the wireless direct function of the second method is performed and a peer device is not discovered within a predefined duration.